From 5db075c5dd038fbf4b5a0196e10f4f9658236372 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sun, 27 Jul 2014 11:05:17 +0100 Subject: [PATCH 45/57] mtd: add mt7621 nand support Signed-off-by: John Crispin --- drivers/mtd/nand/Kconfig | 6 + drivers/mtd/nand/Makefile | 1 + drivers/mtd/nand/bmt.c | 750 ++++++++++++ drivers/mtd/nand/bmt.h | 80 ++ drivers/mtd/nand/dev-nand.c | 63 + drivers/mtd/nand/mt6575_typedefs.h | 340 ++++++ drivers/mtd/nand/mtk_nand.c | 2304 +++++++++++++++++++++++++++++++++++ drivers/mtd/nand/mtk_nand.h | 452 +++++++ drivers/mtd/nand/nand_base.c | 6 +- drivers/mtd/nand/nand_bbt.c | 19 + drivers/mtd/nand/nand_def.h | 123 ++ drivers/mtd/nand/nand_device_list.h | 55 + drivers/mtd/nand/partition.h | 115 ++ 13 files changed, 4311 insertions(+), 3 deletions(-) create mode 100644 drivers/mtd/nand/bmt.c create mode 100644 drivers/mtd/nand/bmt.h create mode 100644 drivers/mtd/nand/dev-nand.c create mode 100644 drivers/mtd/nand/mt6575_typedefs.h create mode 100644 drivers/mtd/nand/mtk_nand.c create mode 100644 drivers/mtd/nand/mtk_nand.h create mode 100644 drivers/mtd/nand/nand_def.h create mode 100644 drivers/mtd/nand/nand_device_list.h create mode 100644 drivers/mtd/nand/partition.h diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 90ff447..5cafa39 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -510,4 +510,10 @@ config MTD_NAND_XWAY Enables support for NAND Flash chips on Lantiq XWAY SoCs. NAND is attached to the External Bus Unit (EBU). +config MTK_MTD_NAND + tristate "Support for MTK SoC NAND controller" + depends on SOC_MT7621 + select MTD_NAND_IDS + select MTD_NAND_ECC + endif # MTD_NAND diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 542b568..c68c96c 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -49,5 +49,6 @@ obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o obj-$(CONFIG_MTD_NAND_GPMI_NAND) += gpmi-nand/ obj-$(CONFIG_MTD_NAND_XWAY) += xway_nand.o obj-$(CONFIG_MTD_NAND_BCM47XXNFLASH) += bcm47xxnflash/ +obj-$(CONFIG_MTK_MTD_NAND) += mtk_nand.o bmt.o nand-objs := nand_base.o nand_bbt.o diff --git a/drivers/mtd/nand/bmt.c b/drivers/mtd/nand/bmt.c new file mode 100644 index 0000000..0462871 --- /dev/null +++ b/drivers/mtd/nand/bmt.c @@ -0,0 +1,750 @@ +#include "bmt.h" + +typedef struct +{ + char signature[3]; + u8 version; + u8 bad_count; // bad block count in pool + u8 mapped_count; // mapped block count in pool + u8 checksum; + u8 reseverd[13]; +} phys_bmt_header; + +typedef struct +{ + phys_bmt_header header; + bmt_entry table[MAX_BMT_SIZE]; +} phys_bmt_struct; + +typedef struct +{ + char signature[3]; +} bmt_oob_data; + +static char MAIN_SIGNATURE[] = "BMT"; +static char OOB_SIGNATURE[] = "bmt"; +#define SIGNATURE_SIZE (3) + +#define MAX_DAT_SIZE 0x1000 +#define MAX_OOB_SIZE 0x80 + +static struct mtd_info *mtd_bmt; +static struct nand_chip *nand_chip_bmt; +#define BLOCK_SIZE_BMT (1 << nand_chip_bmt->phys_erase_shift) +#define PAGE_SIZE_BMT (1 << nand_chip_bmt->page_shift) + +#define OFFSET(block) ((block) * BLOCK_SIZE_BMT) +#define PAGE_ADDR(block) ((block) * BLOCK_SIZE_BMT / PAGE_SIZE_BMT) + +/********************************************************************* +* Flash is splited into 2 parts, system part is for normal system * +* system usage, size is system_block_count, another is replace pool * +* +-------------------------------------------------+ * +* | system_block_count | bmt_block_count | * +* +-------------------------------------------------+ * +*********************************************************************/ +static u32 total_block_count; // block number in flash +static u32 system_block_count; +static int bmt_block_count; // bmt table size +// static int bmt_count; // block used in bmt +static int page_per_block; // page per count + +static u32 bmt_block_index; // bmt block index +static bmt_struct bmt; // dynamic created global bmt table + +static u8 dat_buf[MAX_DAT_SIZE]; +static u8 oob_buf[MAX_OOB_SIZE]; +static bool pool_erased; + +/*************************************************************** +* +* Interface adaptor for preloader/uboot/kernel +* These interfaces operate on physical address, read/write +* physical data. +* +***************************************************************/ +int nand_read_page_bmt(u32 page, u8 * dat, u8 * oob) +{ + return mtk_nand_exec_read_page(mtd_bmt, page, PAGE_SIZE_BMT, dat, oob); +} + +bool nand_block_bad_bmt(u32 offset) +{ + return mtk_nand_block_bad_hw(mtd_bmt, offset); +} + +bool nand_erase_bmt(u32 offset) +{ + int status; + if (offset < 0x20000) + { + MSG(INIT, "erase offset: 0x%x\n", offset); + } + + status = mtk_nand_erase_hw(mtd_bmt, offset / PAGE_SIZE_BMT); // as nand_chip structure doesn't have a erase function defined + if (status & NAND_STATUS_FAIL) + return false; + else + return true; +} + +int mark_block_bad_bmt(u32 offset) +{ + return mtk_nand_block_markbad_hw(mtd_bmt, offset); //mark_block_bad_hw(offset); +} + +bool nand_write_page_bmt(u32 page, u8 * dat, u8 * oob) +{ + if (mtk_nand_exec_write_page(mtd_bmt, page, PAGE_SIZE_BMT, dat, oob)) + return false; + else + return true; +} + +/*************************************************************** +* * +* static internal function * +* * +***************************************************************/ +static void dump_bmt_info(bmt_struct * bmt) +{ + int i; + + MSG(INIT, "BMT v%d. total %d mapping:\n", bmt->version, bmt->mapped_count); + for (i = 0; i < bmt->mapped_count; i++) + { + MSG(INIT, "\t0x%x -> 0x%x\n", bmt->table[i].bad_index, bmt->table[i].mapped_index); + } +} + +static bool match_bmt_signature(u8 * dat, u8 * oob) +{ + + if (memcmp(dat + MAIN_SIGNATURE_OFFSET, MAIN_SIGNATURE, SIGNATURE_SIZE)) + { + return false; + } + + if (memcmp(oob + OOB_SIGNATURE_OFFSET, OOB_SIGNATURE, SIGNATURE_SIZE)) + { + MSG(INIT, "main signature match, oob signature doesn't match, but ignore\n"); + } + return true; +} + +static u8 cal_bmt_checksum(phys_bmt_struct * phys_table, int bmt_size) +{ + int i; + u8 checksum = 0; + u8 *dat = (u8 *) phys_table; + + checksum += phys_table->header.version; + checksum += phys_table->header.mapped_count; + + dat += sizeof(phys_bmt_header); + for (i = 0; i < bmt_size * sizeof(bmt_entry); i++) + { + checksum += dat[i]; + } + + return checksum; +} + + +static int is_block_mapped(int index) +{ + int i; + for (i = 0; i < bmt.mapped_count; i++) + { + if (index == bmt.table[i].mapped_index) + return i; + } + return -1; +} + +static bool is_page_used(u8 * dat, u8 * oob) +{ + return ((oob[OOB_INDEX_OFFSET] != 0xFF) || (oob[OOB_INDEX_OFFSET + 1] != 0xFF)); +} + +static bool valid_bmt_data(phys_bmt_struct * phys_table) +{ + int i; + u8 checksum = cal_bmt_checksum(phys_table, bmt_block_count); + + // checksum correct? + if (phys_table->header.checksum != checksum) + { + MSG(INIT, "BMT Data checksum error: %x %x\n", phys_table->header.checksum, checksum); + return false; + } + + MSG(INIT, "BMT Checksum is: 0x%x\n", phys_table->header.checksum); + + // block index correct? + for (i = 0; i < phys_table->header.mapped_count; i++) + { + if (phys_table->table[i].bad_index >= total_block_count || phys_table->table[i].mapped_index >= total_block_count || phys_table->table[i].mapped_index < system_block_count) + { + MSG(INIT, "index error: bad_index: %d, mapped_index: %d\n", phys_table->table[i].bad_index, phys_table->table[i].mapped_index); + return false; + } + } + + // pass check, valid bmt. + MSG(INIT, "Valid BMT, version v%d\n", phys_table->header.version); + return true; +} + +static void fill_nand_bmt_buffer(bmt_struct * bmt, u8 * dat, u8 * oob) +{ + phys_bmt_struct phys_bmt; + + dump_bmt_info(bmt); + + // fill phys_bmt_struct structure with bmt_struct + memset(&phys_bmt, 0xFF, sizeof(phys_bmt)); + + memcpy(phys_bmt.header.signature, MAIN_SIGNATURE, SIGNATURE_SIZE); + phys_bmt.header.version = BMT_VERSION; + // phys_bmt.header.bad_count = bmt->bad_count; + phys_bmt.header.mapped_count = bmt->mapped_count; + memcpy(phys_bmt.table, bmt->table, sizeof(bmt_entry) * bmt_block_count); + + phys_bmt.header.checksum = cal_bmt_checksum(&phys_bmt, bmt_block_count); + + memcpy(dat + MAIN_SIGNATURE_OFFSET, &phys_bmt, sizeof(phys_bmt)); + memcpy(oob + OOB_SIGNATURE_OFFSET, OOB_SIGNATURE, SIGNATURE_SIZE); +} + +// return valid index if found BMT, else return 0 +static int load_bmt_data(int start, int pool_size) +{ + int bmt_index = start + pool_size - 1; // find from the end + phys_bmt_struct phys_table; + int i; + + MSG(INIT, "[%s]: begin to search BMT from block 0x%x\n", __FUNCTION__, bmt_index); + + for (bmt_index = start + pool_size - 1; bmt_index >= start; bmt_index--) + { + if (nand_block_bad_bmt(OFFSET(bmt_index))) + { + MSG(INIT, "Skip bad block: %d\n", bmt_index); + continue; + } + + if (!nand_read_page_bmt(PAGE_ADDR(bmt_index), dat_buf, oob_buf)) + { + MSG(INIT, "Error found when read block %d\n", bmt_index); + continue; + } + + if (!match_bmt_signature(dat_buf, oob_buf)) + { + continue; + } + + MSG(INIT, "Match bmt signature @ block: 0x%x\n", bmt_index); + + memcpy(&phys_table, dat_buf + MAIN_SIGNATURE_OFFSET, sizeof(phys_table)); + + if (!valid_bmt_data(&phys_table)) + { + MSG(INIT, "BMT data is not correct %d\n", bmt_index); + continue; + } else + { + bmt.mapped_count = phys_table.header.mapped_count; + bmt.version = phys_table.header.version; + // bmt.bad_count = phys_table.header.bad_count; + memcpy(bmt.table, phys_table.table, bmt.mapped_count * sizeof(bmt_entry)); + + MSG(INIT, "bmt found at block: %d, mapped block: %d\n", bmt_index, bmt.mapped_count); + + for (i = 0; i < bmt.mapped_count; i++) + { + if (!nand_block_bad_bmt(OFFSET(bmt.table[i].bad_index))) + { + MSG(INIT, "block 0x%x is not mark bad, should be power lost last time\n", bmt.table[i].bad_index); + mark_block_bad_bmt(OFFSET(bmt.table[i].bad_index)); + } + } + + return bmt_index; + } + } + + MSG(INIT, "bmt block not found!\n"); + return 0; +} + +/************************************************************************* +* Find an available block and erase. * +* start_from_end: if true, find available block from end of flash. * +* else, find from the beginning of the pool * +* need_erase: if true, all unmapped blocks in the pool will be erased * +*************************************************************************/ +static int find_available_block(bool start_from_end) +{ + int i; // , j; + int block = system_block_count; + int direction; + // int avail_index = 0; + MSG(INIT, "Try to find_available_block, pool_erase: %d\n", pool_erased); + + // erase all un-mapped blocks in pool when finding avaliable block + if (!pool_erased) + { + MSG(INIT, "Erase all un-mapped blocks in pool\n"); + for (i = 0; i < bmt_block_count; i++) + { + if (block == bmt_block_index) + { + MSG(INIT, "Skip bmt block 0x%x\n", block); + continue; + } + + if (nand_block_bad_bmt(OFFSET(block + i))) + { + MSG(INIT, "Skip bad block 0x%x\n", block + i); + continue; + } +//if(block==4095) +//{ +// continue; +//} + + if (is_block_mapped(block + i) >= 0) + { + MSG(INIT, "Skip mapped block 0x%x\n", block + i); + continue; + } + + if (!nand_erase_bmt(OFFSET(block + i))) + { + MSG(INIT, "Erase block 0x%x failed\n", block + i); + mark_block_bad_bmt(OFFSET(block + i)); + } + } + + pool_erased = 1; + } + + if (start_from_end) + { + block = total_block_count - 1; + direction = -1; + } else + { + block = system_block_count; + direction = 1; + } + + for (i = 0; i < bmt_block_count; i++, block += direction) + { + if (block == bmt_block_index) + { + MSG(INIT, "Skip bmt block 0x%x\n", block); + continue; + } + + if (nand_block_bad_bmt(OFFSET(block))) + { + MSG(INIT, "Skip bad block 0x%x\n", block); + continue; + } + + if (is_block_mapped(block) >= 0) + { + MSG(INIT, "Skip mapped block 0x%x\n", block); + continue; + } + + MSG(INIT, "Find block 0x%x available\n", block); + return block; + } + + return 0; +} + +static unsigned short get_bad_index_from_oob(u8 * oob_buf) +{ + unsigned short index; + memcpy(&index, oob_buf + OOB_INDEX_OFFSET, OOB_INDEX_SIZE); + + return index; +} + +void set_bad_index_to_oob(u8 * oob, u16 index) +{ + memcpy(oob + OOB_INDEX_OFFSET, &index, sizeof(index)); +} + +static int migrate_from_bad(int offset, u8 * write_dat, u8 * write_oob) +{ + int page; + int error_block = offset / BLOCK_SIZE_BMT; + int error_page = (offset / PAGE_SIZE_BMT) % page_per_block; + int to_index; + + memcpy(oob_buf, write_oob, MAX_OOB_SIZE); + + to_index = find_available_block(false); + + if (!to_index) + { + MSG(INIT, "Cannot find an available block for BMT\n"); + return 0; + } + + { // migrate error page first + MSG(INIT, "Write error page: 0x%x\n", error_page); + if (!write_dat) + { + nand_read_page_bmt(PAGE_ADDR(error_block) + error_page, dat_buf, NULL); + write_dat = dat_buf; + } + // memcpy(oob_buf, write_oob, MAX_OOB_SIZE); + + if (error_block < system_block_count) + set_bad_index_to_oob(oob_buf, error_block); // if error_block is already a mapped block, original mapping index is in OOB. + + if (!nand_write_page_bmt(PAGE_ADDR(to_index) + error_page, write_dat, oob_buf)) + { + MSG(INIT, "Write to page 0x%x fail\n", PAGE_ADDR(to_index) + error_page); + mark_block_bad_bmt(to_index); + return migrate_from_bad(offset, write_dat, write_oob); + } + } + + for (page = 0; page < page_per_block; page++) + { + if (page != error_page) + { + nand_read_page_bmt(PAGE_ADDR(error_block) + page, dat_buf, oob_buf); + if (is_page_used(dat_buf, oob_buf)) + { + if (error_block < system_block_count) + { + set_bad_index_to_oob(oob_buf, error_block); + } + MSG(INIT, "\tmigrate page 0x%x to page 0x%x\n", PAGE_ADDR(error_block) + page, PAGE_ADDR(to_index) + page); + if (!nand_write_page_bmt(PAGE_ADDR(to_index) + page, dat_buf, oob_buf)) + { + MSG(INIT, "Write to page 0x%x fail\n", PAGE_ADDR(to_index) + page); + mark_block_bad_bmt(to_index); + return migrate_from_bad(offset, write_dat, write_oob); + } + } + } + } + + MSG(INIT, "Migrate from 0x%x to 0x%x done!\n", error_block, to_index); + + return to_index; +} + +static bool write_bmt_to_flash(u8 * dat, u8 * oob) +{ + bool need_erase = true; + MSG(INIT, "Try to write BMT\n"); + + if (bmt_block_index == 0) + { + // if we don't have index, we don't need to erase found block as it has been erased in find_available_block() + need_erase = false; + if (!(bmt_block_index = find_available_block(true))) + { + MSG(INIT, "Cannot find an available block for BMT\n"); + return false; + } + } + + MSG(INIT, "Find BMT block: 0x%x\n", bmt_block_index); + + // write bmt to flash + if (need_erase) + { + if (!nand_erase_bmt(OFFSET(bmt_block_index))) + { + MSG(INIT, "BMT block erase fail, mark bad: 0x%x\n", bmt_block_index); + mark_block_bad_bmt(OFFSET(bmt_block_index)); + // bmt.bad_count++; + + bmt_block_index = 0; + return write_bmt_to_flash(dat, oob); // recursive call + } + } + + if (!nand_write_page_bmt(PAGE_ADDR(bmt_block_index), dat, oob)) + { + MSG(INIT, "Write BMT data fail, need to write again\n"); + mark_block_bad_bmt(OFFSET(bmt_block_index)); + // bmt.bad_count++; + + bmt_block_index = 0; + return write_bmt_to_flash(dat, oob); // recursive call + } + + MSG(INIT, "Write BMT data to block 0x%x success\n", bmt_block_index); + return true; +} + +/******************************************************************* +* Reconstruct bmt, called when found bmt info doesn't match bad +* block info in flash. +* +* Return NULL for failure +*******************************************************************/ +bmt_struct *reconstruct_bmt(bmt_struct * bmt) +{ + int i; + int index = system_block_count; + unsigned short bad_index; + int mapped; + + // init everything in BMT struct + bmt->version = BMT_VERSION; + bmt->bad_count = 0; + bmt->mapped_count = 0; + + memset(bmt->table, 0, bmt_block_count * sizeof(bmt_entry)); + + for (i = 0; i < bmt_block_count; i++, index++) + { + if (nand_block_bad_bmt(OFFSET(index))) + { + MSG(INIT, "Skip bad block: 0x%x\n", index); + // bmt->bad_count++; + continue; + } + + MSG(INIT, "read page: 0x%x\n", PAGE_ADDR(index)); + nand_read_page_bmt(PAGE_ADDR(index), dat_buf, oob_buf); + /* if (mtk_nand_read_page_hw(PAGE_ADDR(index), dat_buf)) + { + MSG(INIT, "Error when read block %d\n", bmt_block_index); + continue; + } */ + + if ((bad_index = get_bad_index_from_oob(oob_buf)) >= system_block_count) + { + MSG(INIT, "get bad index: 0x%x\n", bad_index); + if (bad_index != 0xFFFF) + MSG(INIT, "Invalid bad index found in block 0x%x, bad index 0x%x\n", index, bad_index); + continue; + } + + MSG(INIT, "Block 0x%x is mapped to bad block: 0x%x\n", index, bad_index); + + if (!nand_block_bad_bmt(OFFSET(bad_index))) + { + MSG(INIT, "\tbut block 0x%x is not marked as bad, invalid mapping\n", bad_index); + continue; // no need to erase here, it will be erased later when trying to write BMT + } + + if ((mapped = is_block_mapped(bad_index)) >= 0) + { + MSG(INIT, "bad block 0x%x is mapped to 0x%x, should be caused by power lost, replace with one\n", bmt->table[mapped].bad_index, bmt->table[mapped].mapped_index); + bmt->table[mapped].mapped_index = index; // use new one instead. + } else + { + // add mapping to BMT + bmt->table[bmt->mapped_count].bad_index = bad_index; + bmt->table[bmt->mapped_count].mapped_index = index; + bmt->mapped_count++; + } + + MSG(INIT, "Add mapping: 0x%x -> 0x%x to BMT\n", bad_index, index); + + } + + MSG(INIT, "Scan replace pool done, mapped block: %d\n", bmt->mapped_count); + // dump_bmt_info(bmt); + + // fill NAND BMT buffer + memset(oob_buf, 0xFF, sizeof(oob_buf)); + fill_nand_bmt_buffer(bmt, dat_buf, oob_buf); + + // write BMT back + if (!write_bmt_to_flash(dat_buf, oob_buf)) + { + MSG(INIT, "TRAGEDY: cannot find a place to write BMT!!!!\n"); + } + + return bmt; +} + +/******************************************************************* +* [BMT Interface] +* +* Description: +* Init bmt from nand. Reconstruct if not found or data error +* +* Parameter: +* size: size of bmt and replace pool +* +* Return: +* NULL for failure, and a bmt struct for success +*******************************************************************/ +bmt_struct *init_bmt(struct nand_chip * chip, int size) +{ + struct mtk_nand_host *host; + + if (size > 0 && size < MAX_BMT_SIZE) + { + MSG(INIT, "Init bmt table, size: %d\n", size); + bmt_block_count = size; + } else + { + MSG(INIT, "Invalid bmt table size: %d\n", size); + return NULL; + } + nand_chip_bmt = chip; + system_block_count = chip->chipsize >> chip->phys_erase_shift; + total_block_count = bmt_block_count + system_block_count; + page_per_block = BLOCK_SIZE_BMT / PAGE_SIZE_BMT; + host = (struct mtk_nand_host *)chip->priv; + mtd_bmt = &host->mtd; + + MSG(INIT, "mtd_bmt: %p, nand_chip_bmt: %p\n", mtd_bmt, nand_chip_bmt); + MSG(INIT, "bmt count: %d, system count: %d\n", bmt_block_count, system_block_count); + + // set this flag, and unmapped block in pool will be erased. + pool_erased = 0; + memset(bmt.table, 0, size * sizeof(bmt_entry)); + if ((bmt_block_index = load_bmt_data(system_block_count, size))) + { + MSG(INIT, "Load bmt data success @ block 0x%x\n", bmt_block_index); + dump_bmt_info(&bmt); + return &bmt; + } else + { + MSG(INIT, "Load bmt data fail, need re-construct!\n"); +#ifndef __UBOOT_NAND__ // BMT is not re-constructed in UBOOT. + if (reconstruct_bmt(&bmt)) + return &bmt; + else +#endif + return NULL; + } +} + +/******************************************************************* +* [BMT Interface] +* +* Description: +* Update BMT. +* +* Parameter: +* offset: update block/page offset. +* reason: update reason, see update_reason_t for reason. +* dat/oob: data and oob buffer for write fail. +* +* Return: +* Return true for success, and false for failure. +*******************************************************************/ +bool update_bmt(u32 offset, update_reason_t reason, u8 * dat, u8 * oob) +{ + int map_index; + int orig_bad_block = -1; + // int bmt_update_index; + int i; + int bad_index = offset / BLOCK_SIZE_BMT; + +#ifndef MTK_NAND_BMT + return false; +#endif + if (reason == UPDATE_WRITE_FAIL) + { + MSG(INIT, "Write fail, need to migrate\n"); + if (!(map_index = migrate_from_bad(offset, dat, oob))) + { + MSG(INIT, "migrate fail\n"); + return false; + } + } else + { + if (!(map_index = find_available_block(false))) + { + MSG(INIT, "Cannot find block in pool\n"); + return false; + } + } + + // now let's update BMT + if (bad_index >= system_block_count) // mapped block become bad, find original bad block + { + for (i = 0; i < bmt_block_count; i++) + { + if (bmt.table[i].mapped_index == bad_index) + { + orig_bad_block = bmt.table[i].bad_index; + break; + } + } + // bmt.bad_count++; + MSG(INIT, "Mapped block becomes bad, orig bad block is 0x%x\n", orig_bad_block); + + bmt.table[i].mapped_index = map_index; + } else + { + bmt.table[bmt.mapped_count].mapped_index = map_index; + bmt.table[bmt.mapped_count].bad_index = bad_index; + bmt.mapped_count++; + } + + memset(oob_buf, 0xFF, sizeof(oob_buf)); + fill_nand_bmt_buffer(&bmt, dat_buf, oob_buf); + if (!write_bmt_to_flash(dat_buf, oob_buf)) + return false; + + mark_block_bad_bmt(offset); + + return true; +} + +/******************************************************************* +* [BMT Interface] +* +* Description: +* Given an block index, return mapped index if it's mapped, else +* return given index. +* +* Parameter: +* index: given an block index. This value cannot exceed +* system_block_count. +* +* Return NULL for failure +*******************************************************************/ +u16 get_mapping_block_index(int index) +{ + int i; +#ifndef MTK_NAND_BMT + return index; +#endif + if (index > system_block_count) + { + return index; + } + + for (i = 0; i < bmt.mapped_count; i++) + { + if (bmt.table[i].bad_index == index) + { + return bmt.table[i].mapped_index; + } + } + + return index; +} +#ifdef __KERNEL_NAND__ +EXPORT_SYMBOL_GPL(init_bmt); +EXPORT_SYMBOL_GPL(update_bmt); +EXPORT_SYMBOL_GPL(get_mapping_block_index); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("MediaTek"); +MODULE_DESCRIPTION("Bad Block mapping management for MediaTek NAND Flash Driver"); +#endif diff --git a/drivers/mtd/nand/bmt.h b/drivers/mtd/nand/bmt.h new file mode 100644 index 0000000..2d30ea9 --- /dev/null +++ b/drivers/mtd/nand/bmt.h @@ -0,0 +1,80 @@ +#ifndef __BMT_H__ +#define __BMT_H__ + +#include "nand_def.h" + +#if defined(__PRELOADER_NAND__) + +#include "nand.h" + +#elif defined(__UBOOT_NAND__) + +#include +#include "mtk_nand.h" + +#elif defined(__KERNEL_NAND__) + +#include +#include +#include +#include "mtk_nand.h" + +#endif + + +#define MAX_BMT_SIZE (0x80) +#define BMT_VERSION (1) // initial version + +#define MAIN_SIGNATURE_OFFSET (0) +#define OOB_SIGNATURE_OFFSET (1) +#define OOB_INDEX_OFFSET (29) +#define OOB_INDEX_SIZE (2) +#define FAKE_INDEX (0xAAAA) + +typedef struct _bmt_entry_ +{ + u16 bad_index; // bad block index + u16 mapped_index; // mapping block index in the replace pool +} bmt_entry; + +typedef enum +{ + UPDATE_ERASE_FAIL, + UPDATE_WRITE_FAIL, + UPDATE_UNMAPPED_BLOCK, + UPDATE_REASON_COUNT, +} update_reason_t; + +typedef struct +{ + bmt_entry table[MAX_BMT_SIZE]; + u8 version; + u8 mapped_count; // mapped block count in pool + u8 bad_count; // bad block count in pool. Not used in V1 +} bmt_struct; + +/*************************************************************** +* * +* Interface BMT need to use * +* * +***************************************************************/ +extern bool mtk_nand_exec_read_page(struct mtd_info *mtd, u32 row, u32 page_size, u8 * dat, u8 * oob); +extern int mtk_nand_block_bad_hw(struct mtd_info *mtd, loff_t ofs); +extern int mtk_nand_erase_hw(struct mtd_info *mtd, int page); +extern int mtk_nand_block_markbad_hw(struct mtd_info *mtd, loff_t ofs); +extern int mtk_nand_exec_write_page(struct mtd_info *mtd, u32 row, u32 page_size, u8 * dat, u8 * oob); + + +/*************************************************************** +* * +* Different function interface for preloader/uboot/kernel * +* * +***************************************************************/ +void set_bad_index_to_oob(u8 * oob, u16 index); + + +bmt_struct *init_bmt(struct nand_chip *nand, int size); +bool update_bmt(u32 offset, update_reason_t reason, u8 * dat, u8 * oob); +unsigned short get_mapping_block_index(int index); + +#endif // #ifndef __BMT_H__ diff --git a/drivers/mtd/nand/dev-nand.c b/drivers/mtd/nand/dev-nand.c new file mode 100644 index 0000000..9fb5235 --- /dev/null +++ b/drivers/mtd/nand/dev-nand.c @@ -0,0 +1,63 @@ +#include +#include +#include + +#include "mt6575_typedefs.h" + +#define RALINK_NAND_CTRL_BASE 0xBE003000 +#define NFI_base RALINK_NAND_CTRL_BASE +#define RALINK_NANDECC_CTRL_BASE 0xBE003800 +#define NFIECC_base RALINK_NANDECC_CTRL_BASE +#define MT7621_NFI_IRQ_ID SURFBOARDINT_NAND +#define MT7621_NFIECC_IRQ_ID SURFBOARDINT_NAND_ECC + +#define SURFBOARDINT_NAND 22 +#define SURFBOARDINT_NAND_ECC 23 + +static struct resource MT7621_resource_nand[] = { + { + .start = NFI_base, + .end = NFI_base + 0x1A0, + .flags = IORESOURCE_MEM, + }, + { + .start = NFIECC_base, + .end = NFIECC_base + 0x150, + .flags = IORESOURCE_MEM, + }, + { + .start = MT7621_NFI_IRQ_ID, + .flags = IORESOURCE_IRQ, + }, + { + .start = MT7621_NFIECC_IRQ_ID, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device MT7621_nand_dev = { + .name = "MT7621-NAND", + .id = 0, + .num_resources = ARRAY_SIZE(MT7621_resource_nand), + .resource = MT7621_resource_nand, + .dev = { + .platform_data = &mt7621_nand_hw, + }, +}; + + +int __init mtk_nand_register(void) +{ + + int retval = 0; + + retval = platform_device_register(&MT7621_nand_dev); + if (retval != 0) { + printk(KERN_ERR "register nand device fail\n"); + return retval; + } + + + return retval; +} +arch_initcall(mtk_nand_register); diff --git a/drivers/mtd/nand/mt6575_typedefs.h b/drivers/mtd/nand/mt6575_typedefs.h new file mode 100644 index 0000000..a7b9647 --- /dev/null +++ b/drivers/mtd/nand/mt6575_typedefs.h @@ -0,0 +1,340 @@ +/* Copyright Statement: + * + * This software/firmware and related documentation ("MediaTek Software") are + * protected under relevant copyright laws. The information contained herein + * is confidential and proprietary to MediaTek Inc. and/or its licensors. + * Without the prior written permission of MediaTek inc. and/or its licensors, + * any reproduction, modification, use or disclosure of MediaTek Software, + * and information contained herein, in whole or in part, shall be strictly prohibited. + */ +/* MediaTek Inc. (C) 2010. All rights reserved. + * + * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES + * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") + * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON + * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. + * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE + * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR + * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH + * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES + * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES + * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK + * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR + * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND + * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, + * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, + * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO + * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. + * + * The following software/firmware and/or related documentation ("MediaTek Software") + * have been modified by MediaTek Inc. All revisions are subject to any receiver's + * applicable license agreements with MediaTek Inc. + */ + +/***************************************************************************** +* Copyright Statement: +* -------------------- +* This software is protected by Copyright and the information contained +* herein is confidential. The software may not be copied and the information +* contained herein may not be used or disclosed except with the written +* permission of MediaTek Inc. (C) 2008 +* +* BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES +* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") +* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON +* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, +* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. +* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE +* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR +* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH +* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO +* NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S +* SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM. +* +* BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE +* LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, +* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, +* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO +* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. +* +* THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE +* WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF +* LAWS PRINCIPLES. ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND +* RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER +* THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC). +* +*****************************************************************************/ + +#ifndef _MT6575_TYPEDEFS_H +#define _MT6575_TYPEDEFS_H + +#if defined (__KERNEL_NAND__) +#include +#else +#define true 1 +#define false 0 +#define bool u8 +#endif + +// --------------------------------------------------------------------------- +// Basic Type Definitions +// --------------------------------------------------------------------------- + +typedef volatile unsigned char *P_kal_uint8; +typedef volatile unsigned short *P_kal_uint16; +typedef volatile unsigned int *P_kal_uint32; + +typedef long LONG; +typedef unsigned char UBYTE; +typedef short SHORT; + +typedef signed char kal_int8; +typedef signed short kal_int16; +typedef signed int kal_int32; +typedef long long kal_int64; +typedef unsigned char kal_uint8; +typedef unsigned short kal_uint16; +typedef unsigned int kal_uint32; +typedef unsigned long long kal_uint64; +typedef char kal_char; + +typedef unsigned int *UINT32P; +typedef volatile unsigned short *UINT16P; +typedef volatile unsigned char *UINT8P; +typedef unsigned char *U8P; + +typedef volatile unsigned char *P_U8; +typedef volatile signed char *P_S8; +typedef volatile unsigned short *P_U16; +typedef volatile signed short *P_S16; +typedef volatile unsigned int *P_U32; +typedef volatile signed int *P_S32; +typedef unsigned long long *P_U64; +typedef signed long long *P_S64; + +typedef unsigned char U8; +typedef signed char S8; +typedef unsigned short U16; +typedef signed short S16; +typedef unsigned int U32; +typedef signed int S32; +typedef unsigned long long U64; +typedef signed long long S64; +//typedef unsigned char bool; + +typedef unsigned char UINT8; +typedef unsigned short UINT16; +typedef unsigned int UINT32; +typedef unsigned short USHORT; +typedef signed char INT8; +typedef signed short INT16; +typedef signed int INT32; +typedef unsigned int DWORD; +typedef void VOID; +typedef unsigned char BYTE; +typedef float FLOAT; + +typedef char *LPCSTR; +typedef short *LPWSTR; + + +// --------------------------------------------------------------------------- +// Constants +// --------------------------------------------------------------------------- + +#define IMPORT EXTERN +#ifndef __cplusplus + #define EXTERN extern +#else + #define EXTERN extern "C" +#endif +#define LOCAL static +#define GLOBAL +#define EXPORT GLOBAL + +#define EQ == +#define NEQ != +#define AND && +#define OR || +#define XOR(A,B) ((!(A) AND (B)) OR ((A) AND !(B))) + +#ifndef FALSE + #define FALSE (0) +#endif + +#ifndef TRUE + #define TRUE (1) +#endif + +#ifndef NULL + #define NULL (0) +#endif + +//enum boolean {false, true}; +enum {RX, TX, NONE}; + +#ifndef BOOL +typedef unsigned char BOOL; +#endif + +typedef enum { + KAL_FALSE = 0, + KAL_TRUE = 1, +} kal_bool; + + +// --------------------------------------------------------------------------- +// Type Casting +// --------------------------------------------------------------------------- + +#define AS_INT32(x) (*(INT32 *)((void*)x)) +#define AS_INT16(x) (*(INT16 *)((void*)x)) +#define AS_INT8(x) (*(INT8 *)((void*)x)) + +#define AS_UINT32(x) (*(UINT32 *)((void*)x)) +#define AS_UINT16(x) (*(UINT16 *)((void*)x)) +#define AS_UINT8(x) (*(UINT8 *)((void*)x)) + + +// --------------------------------------------------------------------------- +// Register Manipulations +// --------------------------------------------------------------------------- + +#define READ_REGISTER_UINT32(reg) \ + (*(volatile UINT32 * const)(reg)) + +#define WRITE_REGISTER_UINT32(reg, val) \ + (*(volatile UINT32 * const)(reg)) = (val) + +#define READ_REGISTER_UINT16(reg) \ + (*(volatile UINT16 * const)(reg)) + +#define WRITE_REGISTER_UINT16(reg, val) \ + (*(volatile UINT16 * const)(reg)) = (val) + +#define READ_REGISTER_UINT8(reg) \ + (*(volatile UINT8 * const)(reg)) + +#define WRITE_REGISTER_UINT8(reg, val) \ + (*(volatile UINT8 * const)(reg)) = (val) + +#define INREG8(x) READ_REGISTER_UINT8((UINT8*)((void*)(x))) +#define OUTREG8(x, y) WRITE_REGISTER_UINT8((UINT8*)((void*)(x)), (UINT8)(y)) +#define SETREG8(x, y) OUTREG8(x, INREG8(x)|(y)) +#define CLRREG8(x, y) OUTREG8(x, INREG8(x)&~(y)) +#define MASKREG8(x, y, z) OUTREG8(x, (INREG8(x)&~(y))|(z)) + +#define INREG16(x) READ_REGISTER_UINT16((UINT16*)((void*)(x))) +#define OUTREG16(x, y) WRITE_REGISTER_UINT16((UINT16*)((void*)(x)),(UINT16)(y)) +#define SETREG16(x, y) OUTREG16(x, INREG16(x)|(y)) +#define CLRREG16(x, y) OUTREG16(x, INREG16(x)&~(y)) +#define MASKREG16(x, y, z) OUTREG16(x, (INREG16(x)&~(y))|(z)) + +#define INREG32(x) READ_REGISTER_UINT32((UINT32*)((void*)(x))) +#define OUTREG32(x, y) WRITE_REGISTER_UINT32((UINT32*)((void*)(x)), (UINT32)(y)) +#define SETREG32(x, y) OUTREG32(x, INREG32(x)|(y)) +#define CLRREG32(x, y) OUTREG32(x, INREG32(x)&~(y)) +#define MASKREG32(x, y, z) OUTREG32(x, (INREG32(x)&~(y))|(z)) + + +#define DRV_Reg8(addr) INREG8(addr) +#define DRV_WriteReg8(addr, data) OUTREG8(addr, data) +#define DRV_SetReg8(addr, data) SETREG8(addr, data) +#define DRV_ClrReg8(addr, data) CLRREG8(addr, data) + +#define DRV_Reg16(addr) INREG16(addr) +#define DRV_WriteReg16(addr, data) OUTREG16(addr, data) +#define DRV_SetReg16(addr, data) SETREG16(addr, data) +#define DRV_ClrReg16(addr, data) CLRREG16(addr, data) + +#define DRV_Reg32(addr) INREG32(addr) +#define DRV_WriteReg32(addr, data) OUTREG32(addr, data) +#define DRV_SetReg32(addr, data) SETREG32(addr, data) +#define DRV_ClrReg32(addr, data) CLRREG32(addr, data) + +// !!! DEPRECATED, WILL BE REMOVED LATER !!! +#define DRV_Reg(addr) DRV_Reg16(addr) +#define DRV_WriteReg(addr, data) DRV_WriteReg16(addr, data) +#define DRV_SetReg(addr, data) DRV_SetReg16(addr, data) +#define DRV_ClrReg(addr, data) DRV_ClrReg16(addr, data) + + +// --------------------------------------------------------------------------- +// Compiler Time Deduction Macros +// --------------------------------------------------------------------------- + +#define _MASK_OFFSET_1(x, n) ((x) & 0x1) ? (n) : +#define _MASK_OFFSET_2(x, n) _MASK_OFFSET_1((x), (n)) _MASK_OFFSET_1((x) >> 1, (n) + 1) +#define _MASK_OFFSET_4(x, n) _MASK_OFFSET_2((x), (n)) _MASK_OFFSET_2((x) >> 2, (n) + 2) +#define _MASK_OFFSET_8(x, n) _MASK_OFFSET_4((x), (n)) _MASK_OFFSET_4((x) >> 4, (n) + 4) +#define _MASK_OFFSET_16(x, n) _MASK_OFFSET_8((x), (n)) _MASK_OFFSET_8((x) >> 8, (n) + 8) +#define _MASK_OFFSET_32(x, n) _MASK_OFFSET_16((x), (n)) _MASK_OFFSET_16((x) >> 16, (n) + 16) + +#define MASK_OFFSET_ERROR (0xFFFFFFFF) + +#define MASK_OFFSET(x) (_MASK_OFFSET_32(x, 0) MASK_OFFSET_ERROR) + + +// --------------------------------------------------------------------------- +// Assertions +// --------------------------------------------------------------------------- + +#ifndef ASSERT + #define ASSERT(expr) BUG_ON(!(expr)) +#endif + +#ifndef NOT_IMPLEMENTED + #define NOT_IMPLEMENTED() BUG_ON(1) +#endif + +#define STATIC_ASSERT(pred) STATIC_ASSERT_X(pred, __LINE__) +#define STATIC_ASSERT_X(pred, line) STATIC_ASSERT_XX(pred, line) +#define STATIC_ASSERT_XX(pred, line) \ + extern char assertion_failed_at_##line[(pred) ? 1 : -1] + +// --------------------------------------------------------------------------- +// Resolve Compiler Warnings +// --------------------------------------------------------------------------- + +#define NOT_REFERENCED(x) { (x) = (x); } + + +// --------------------------------------------------------------------------- +// Utilities +// --------------------------------------------------------------------------- + +#define MAXIMUM(A,B) (((A)>(B))?(A):(B)) +#define MINIMUM(A,B) (((A)<(B))?(A):(B)) + +#define ARY_SIZE(x) (sizeof((x)) / sizeof((x[0]))) +#define DVT_DELAYMACRO(u4Num) \ +{ \ + UINT32 u4Count = 0 ; \ + for (u4Count = 0; u4Count < u4Num; u4Count++ ); \ +} \ + +#define A68351B 0 +#define B68351B 1 +#define B68351D 2 +#define B68351E 3 +#define UNKNOWN_IC_VERSION 0xFF + +/* NAND driver */ +struct mtk_nand_host_hw { + unsigned int nfi_bus_width; /* NFI_BUS_WIDTH */ + unsigned int nfi_access_timing; /* NFI_ACCESS_TIMING */ + unsigned int nfi_cs_num; /* NFI_CS_NUM */ + unsigned int nand_sec_size; /* NAND_SECTOR_SIZE */ + unsigned int nand_sec_shift; /* NAND_SECTOR_SHIFT */ + unsigned int nand_ecc_size; + unsigned int nand_ecc_bytes; + unsigned int nand_ecc_mode; +}; +extern struct mtk_nand_host_hw mt7621_nand_hw; +extern unsigned int CFG_BLOCKSIZE; + +#endif // _MT6575_TYPEDEFS_H + diff --git a/drivers/mtd/nand/mtk_nand.c b/drivers/mtd/nand/mtk_nand.c new file mode 100644 index 0000000..00e150c --- /dev/null +++ b/drivers/mtd/nand/mtk_nand.c @@ -0,0 +1,2304 @@ +/****************************************************************************** +* mtk_nand.c - MTK NAND Flash Device Driver + * +* Copyright 2009-2012 MediaTek Co.,Ltd. + * +* DESCRIPTION: +* This file provid the other drivers nand relative functions + * +* modification history +* ---------------------------------------- +* v3.0, 11 Feb 2010, mtk +* ---------------------------------------- +******************************************************************************/ +#include "nand_def.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "mtk_nand.h" +#include "nand_device_list.h" + +#include "bmt.h" +#include "partition.h" + +unsigned int CFG_BLOCKSIZE; + +static int shift_on_bbt = 0; +extern void nand_bbt_set(struct mtd_info *mtd, int page, int flag); +extern int nand_bbt_get(struct mtd_info *mtd, int page); +int mtk_nand_read_oob_hw(struct mtd_info *mtd, struct nand_chip *chip, int page); + +static const char * const probe_types[] = { "cmdlinepart", "ofpart", NULL }; + +#define NAND_CMD_STATUS_MULTI 0x71 + +void show_stack(struct task_struct *tsk, unsigned long *sp); +extern void mt_irq_set_sens(unsigned int irq, unsigned int sens); +extern void mt_irq_set_polarity(unsigned int irq,unsigned int polarity); + +struct mtk_nand_host mtk_nand_host; /* include mtd_info and nand_chip structs */ +struct mtk_nand_host_hw mt7621_nand_hw = { + .nfi_bus_width = 8, + .nfi_access_timing = NFI_DEFAULT_ACCESS_TIMING, + .nfi_cs_num = NFI_CS_NUM, + .nand_sec_size = 512, + .nand_sec_shift = 9, + .nand_ecc_size = 2048, + .nand_ecc_bytes = 32, + .nand_ecc_mode = NAND_ECC_HW, +}; + + +/******************************************************************************* + * Gloable Varible Definition + *******************************************************************************/ + +#define NFI_ISSUE_COMMAND(cmd, col_addr, row_addr, col_num, row_num) \ + do { \ + DRV_WriteReg(NFI_CMD_REG16,cmd);\ + while (DRV_Reg32(NFI_STA_REG32) & STA_CMD_STATE);\ + DRV_WriteReg32(NFI_COLADDR_REG32, col_addr);\ + DRV_WriteReg32(NFI_ROWADDR_REG32, row_addr);\ + DRV_WriteReg(NFI_ADDRNOB_REG16, col_num | (row_num<mm) { + printk(KERN_ERR "[nand_virt_to_phys_add] ERROR current->mm is NULL! tgid=0x%x, name=%s \n", current->tgid, current->comm); + return 0; + } + + pgd = pgd_offset(current->mm, va); /* what is tsk->mm */ + if (pgd_none(*pgd) || pgd_bad(*pgd)) { + printk(KERN_ERR "[nand_virt_to_phys_add] ERROR, va=0x%x, pgd invalid! \n", va); + return 0; + } + + pmd = pmd_offset((pud_t *)pgd, va); + if (pmd_none(*pmd) || pmd_bad(*pmd)) { + printk(KERN_ERR "[nand_virt_to_phys_add] ERROR, va=0x%x, pmd invalid! \n", va); + return 0; + } + + pte = pte_offset_map(pmd, va); + if (pte_present(*pte)) { + pa = (pte_val(*pte) & (PAGE_MASK)) | pageOffset; + return pa; + } + + printk(KERN_ERR "[nand_virt_to_phys_add] ERROR va=0x%x, pte invalid! \n", va); + return 0; +} +EXPORT_SYMBOL(nand_virt_to_phys_add); + +bool +get_device_info(u16 id, u32 ext_id, flashdev_info * pdevinfo) +{ + u32 index; + for (index = 0; gen_FlashTable[index].id != 0; index++) { + if (id == gen_FlashTable[index].id && ext_id == gen_FlashTable[index].ext_id) { + pdevinfo->id = gen_FlashTable[index].id; + pdevinfo->ext_id = gen_FlashTable[index].ext_id; + pdevinfo->blocksize = gen_FlashTable[index].blocksize; + pdevinfo->addr_cycle = gen_FlashTable[index].addr_cycle; + pdevinfo->iowidth = gen_FlashTable[index].iowidth; + pdevinfo->timmingsetting = gen_FlashTable[index].timmingsetting; + pdevinfo->advancedmode = gen_FlashTable[index].advancedmode; + pdevinfo->pagesize = gen_FlashTable[index].pagesize; + pdevinfo->sparesize = gen_FlashTable[index].sparesize; + pdevinfo->totalsize = gen_FlashTable[index].totalsize; + memcpy(pdevinfo->devciename, gen_FlashTable[index].devciename, sizeof(pdevinfo->devciename)); + printk(KERN_INFO "Device found in MTK table, ID: %x, EXT_ID: %x\n", id, ext_id); + + goto find; + } + } + +find: + if (0 == pdevinfo->id) { + printk(KERN_INFO "Device not found, ID: %x\n", id); + return false; + } else { + return true; + } +} + +static void +ECC_Config(struct mtk_nand_host_hw *hw,u32 ecc_bit) +{ + u32 u4ENCODESize; + u32 u4DECODESize; + u32 ecc_bit_cfg = ECC_CNFG_ECC4; + + switch(ecc_bit){ + case 4: + ecc_bit_cfg = ECC_CNFG_ECC4; + break; + case 8: + ecc_bit_cfg = ECC_CNFG_ECC8; + break; + case 10: + ecc_bit_cfg = ECC_CNFG_ECC10; + break; + case 12: + ecc_bit_cfg = ECC_CNFG_ECC12; + break; + default: + break; + } + DRV_WriteReg16(ECC_DECCON_REG16, DEC_DE); + do { + } while (!DRV_Reg16(ECC_DECIDLE_REG16)); + + DRV_WriteReg16(ECC_ENCCON_REG16, ENC_DE); + do { + } while (!DRV_Reg32(ECC_ENCIDLE_REG32)); + + /* setup FDM register base */ + DRV_WriteReg32(ECC_FDMADDR_REG32, NFI_FDM0L_REG32); + + /* Sector + FDM */ + u4ENCODESize = (hw->nand_sec_size + 8) << 3; + /* Sector + FDM + YAFFS2 meta data bits */ + u4DECODESize = ((hw->nand_sec_size + 8) << 3) + ecc_bit * 13; + + /* configure ECC decoder && encoder */ + DRV_WriteReg32(ECC_DECCNFG_REG32, ecc_bit_cfg | DEC_CNFG_NFI | DEC_CNFG_EMPTY_EN | (u4DECODESize << DEC_CNFG_CODE_SHIFT)); + + DRV_WriteReg32(ECC_ENCCNFG_REG32, ecc_bit_cfg | ENC_CNFG_NFI | (u4ENCODESize << ENC_CNFG_MSG_SHIFT)); + NFI_SET_REG32(ECC_DECCNFG_REG32, DEC_CNFG_EL); +} + +static void +ECC_Decode_Start(void) +{ + while (!(DRV_Reg16(ECC_DECIDLE_REG16) & DEC_IDLE)) + ; + DRV_WriteReg16(ECC_DECCON_REG16, DEC_EN); +} + +static void +ECC_Decode_End(void) +{ + while (!(DRV_Reg16(ECC_DECIDLE_REG16) & DEC_IDLE)) + ; + DRV_WriteReg16(ECC_DECCON_REG16, DEC_DE); +} + +static void +ECC_Encode_Start(void) +{ + while (!(DRV_Reg32(ECC_ENCIDLE_REG32) & ENC_IDLE)) + ; + mb(); + DRV_WriteReg16(ECC_ENCCON_REG16, ENC_EN); +} + +static void +ECC_Encode_End(void) +{ + /* wait for device returning idle */ + while (!(DRV_Reg32(ECC_ENCIDLE_REG32) & ENC_IDLE)) ; + mb(); + DRV_WriteReg16(ECC_ENCCON_REG16, ENC_DE); +} + +static bool +mtk_nand_check_bch_error(struct mtd_info *mtd, u8 * pDataBuf, u32 u4SecIndex, u32 u4PageAddr) +{ + bool bRet = true; + u16 u2SectorDoneMask = 1 << u4SecIndex; + u32 u4ErrorNumDebug, i, u4ErrNum; + u32 timeout = 0xFFFF; + // int el; + u32 au4ErrBitLoc[6]; + u32 u4ErrByteLoc, u4BitOffset; + u32 u4ErrBitLoc1th, u4ErrBitLoc2nd; + + //4 // Wait for Decode Done + while (0 == (u2SectorDoneMask & DRV_Reg16(ECC_DECDONE_REG16))) { + timeout--; + if (0 == timeout) + return false; + } + /* We will manually correct the error bits in the last sector, not all the sectors of the page! */ + memset(au4ErrBitLoc, 0x0, sizeof(au4ErrBitLoc)); + u4ErrorNumDebug = DRV_Reg32(ECC_DECENUM_REG32); + u4ErrNum = DRV_Reg32(ECC_DECENUM_REG32) >> (u4SecIndex << 2); + u4ErrNum &= 0xF; + + if (u4ErrNum) { + if (0xF == u4ErrNum) { + mtd->ecc_stats.failed++; + bRet = false; + //printk(KERN_ERR"UnCorrectable at PageAddr=%d\n", u4PageAddr); + } else { + for (i = 0; i < ((u4ErrNum + 1) >> 1); ++i) { + au4ErrBitLoc[i] = DRV_Reg32(ECC_DECEL0_REG32 + i); + u4ErrBitLoc1th = au4ErrBitLoc[i] & 0x1FFF; + if (u4ErrBitLoc1th < 0x1000) { + u4ErrByteLoc = u4ErrBitLoc1th / 8; + u4BitOffset = u4ErrBitLoc1th % 8; + pDataBuf[u4ErrByteLoc] = pDataBuf[u4ErrByteLoc] ^ (1 << u4BitOffset); + mtd->ecc_stats.corrected++; + } else { + mtd->ecc_stats.failed++; + } + u4ErrBitLoc2nd = (au4ErrBitLoc[i] >> 16) & 0x1FFF; + if (0 != u4ErrBitLoc2nd) { + if (u4ErrBitLoc2nd < 0x1000) { + u4ErrByteLoc = u4ErrBitLoc2nd / 8; + u4BitOffset = u4ErrBitLoc2nd % 8; + pDataBuf[u4ErrByteLoc] = pDataBuf[u4ErrByteLoc] ^ (1 << u4BitOffset); + mtd->ecc_stats.corrected++; + } else { + mtd->ecc_stats.failed++; + //printk(KERN_ERR"UnCorrectable High ErrLoc=%d\n", au4ErrBitLoc[i]); + } + } + } + } + if (0 == (DRV_Reg16(ECC_DECFER_REG16) & (1 << u4SecIndex))) + bRet = false; + } + return bRet; +} + +static bool +mtk_nand_RFIFOValidSize(u16 u2Size) +{ + u32 timeout = 0xFFFF; + while (FIFO_RD_REMAIN(DRV_Reg16(NFI_FIFOSTA_REG16)) < u2Size) { + timeout--; + if (0 == timeout) + return false; + } + return true; +} + +static bool +mtk_nand_WFIFOValidSize(u16 u2Size) +{ + u32 timeout = 0xFFFF; + + while (FIFO_WR_REMAIN(DRV_Reg16(NFI_FIFOSTA_REG16)) > u2Size) { + timeout--; + if (0 == timeout) + return false; + } + return true; +} + +static bool +mtk_nand_status_ready(u32 u4Status) +{ + u32 timeout = 0xFFFF; + + while ((DRV_Reg32(NFI_STA_REG32) & u4Status) != 0) { + timeout--; + if (0 == timeout) + return false; + } + return true; +} + +static bool +mtk_nand_reset(void) +{ + int timeout = 0xFFFF; + if (DRV_Reg16(NFI_MASTERSTA_REG16)) { + mb(); + DRV_WriteReg16(NFI_CON_REG16, CON_FIFO_FLUSH | CON_NFI_RST); + while (DRV_Reg16(NFI_MASTERSTA_REG16)) { + timeout--; + if (!timeout) + MSG(INIT, "Wait for NFI_MASTERSTA timeout\n"); + } + } + /* issue reset operation */ + mb(); + DRV_WriteReg16(NFI_CON_REG16, CON_FIFO_FLUSH | CON_NFI_RST); + + return mtk_nand_status_ready(STA_NFI_FSM_MASK | STA_NAND_BUSY) && mtk_nand_RFIFOValidSize(0) && mtk_nand_WFIFOValidSize(0); +} + +static void +mtk_nand_set_mode(u16 u2OpMode) +{ + u16 u2Mode = DRV_Reg16(NFI_CNFG_REG16); + u2Mode &= ~CNFG_OP_MODE_MASK; + u2Mode |= u2OpMode; + DRV_WriteReg16(NFI_CNFG_REG16, u2Mode); +} + +static void +mtk_nand_set_autoformat(bool bEnable) +{ + if (bEnable) + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_AUTO_FMT_EN); + else + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AUTO_FMT_EN); +} + +static void +mtk_nand_configure_fdm(u16 u2FDMSize) +{ + NFI_CLN_REG16(NFI_PAGEFMT_REG16, PAGEFMT_FDM_MASK | PAGEFMT_FDM_ECC_MASK); + NFI_SET_REG16(NFI_PAGEFMT_REG16, u2FDMSize << PAGEFMT_FDM_SHIFT); + NFI_SET_REG16(NFI_PAGEFMT_REG16, u2FDMSize << PAGEFMT_FDM_ECC_SHIFT); +} + +static void +mtk_nand_configure_lock(void) +{ + u32 u4WriteColNOB = 2; + u32 u4WriteRowNOB = 3; + u32 u4EraseColNOB = 0; + u32 u4EraseRowNOB = 3; + DRV_WriteReg16(NFI_LOCKANOB_REG16, + (u4WriteColNOB << PROG_CADD_NOB_SHIFT) | (u4WriteRowNOB << PROG_RADD_NOB_SHIFT) | (u4EraseColNOB << ERASE_CADD_NOB_SHIFT) | (u4EraseRowNOB << ERASE_RADD_NOB_SHIFT)); + + if (CHIPVER_ECO_1 == g_u4ChipVer) { + int i; + for (i = 0; i < 16; ++i) { + DRV_WriteReg32(NFI_LOCK00ADD_REG32 + (i << 1), 0xFFFFFFFF); + DRV_WriteReg32(NFI_LOCK00FMT_REG32 + (i << 1), 0xFFFFFFFF); + } + //DRV_WriteReg16(NFI_LOCKANOB_REG16, 0x0); + DRV_WriteReg32(NFI_LOCKCON_REG32, 0xFFFFFFFF); + DRV_WriteReg16(NFI_LOCK_REG16, NFI_LOCK_ON); + } +} + +static bool +mtk_nand_pio_ready(void) +{ + int count = 0; + while (!(DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1)) { + count++; + if (count > 0xffff) { + printk("PIO_DIRDY timeout\n"); + return false; + } + } + + return true; +} + +static bool +mtk_nand_set_command(u16 command) +{ + mb(); + DRV_WriteReg16(NFI_CMD_REG16, command); + return mtk_nand_status_ready(STA_CMD_STATE); +} + +static bool +mtk_nand_set_address(u32 u4ColAddr, u32 u4RowAddr, u16 u2ColNOB, u16 u2RowNOB) +{ + mb(); + DRV_WriteReg32(NFI_COLADDR_REG32, u4ColAddr); + DRV_WriteReg32(NFI_ROWADDR_REG32, u4RowAddr); + DRV_WriteReg16(NFI_ADDRNOB_REG16, u2ColNOB | (u2RowNOB << ADDR_ROW_NOB_SHIFT)); + return mtk_nand_status_ready(STA_ADDR_STATE); +} + +static bool +mtk_nand_check_RW_count(u16 u2WriteSize) +{ + u32 timeout = 0xFFFF; + u16 u2SecNum = u2WriteSize >> 9; + + while (ADDRCNTR_CNTR(DRV_Reg16(NFI_ADDRCNTR_REG16)) < u2SecNum) { + timeout--; + if (0 == timeout) { + printk(KERN_INFO "[%s] timeout\n", __FUNCTION__); + return false; + } + } + return true; +} + +static bool +mtk_nand_ready_for_read(struct nand_chip *nand, u32 u4RowAddr, u32 u4ColAddr, bool full, u8 * buf) +{ + /* Reset NFI HW internal state machine and flush NFI in/out FIFO */ + bool bRet = false; + u16 sec_num = 1 << (nand->page_shift - 9); + u32 col_addr = u4ColAddr; + u32 colnob = 2, rownob = devinfo.addr_cycle - 2; + if (nand->options & NAND_BUSWIDTH_16) + col_addr /= 2; + + if (!mtk_nand_reset()) + goto cleanup; + if (g_bHwEcc) { + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + } else { + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + } + + mtk_nand_set_mode(CNFG_OP_READ); + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_READ_EN); + DRV_WriteReg16(NFI_CON_REG16, sec_num << CON_NFI_SEC_SHIFT); + + if (full) { + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB); + + if (g_bHwEcc) + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + else + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + } else { + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB); + } + + mtk_nand_set_autoformat(full); + if (full) + if (g_bHwEcc) + ECC_Decode_Start(); + if (!mtk_nand_set_command(NAND_CMD_READ0)) + goto cleanup; + if (!mtk_nand_set_address(col_addr, u4RowAddr, colnob, rownob)) + goto cleanup; + if (!mtk_nand_set_command(NAND_CMD_READSTART)) + goto cleanup; + if (!mtk_nand_status_ready(STA_NAND_BUSY)) + goto cleanup; + + bRet = true; + +cleanup: + return bRet; +} + +static bool +mtk_nand_ready_for_write(struct nand_chip *nand, u32 u4RowAddr, u32 col_addr, bool full, u8 * buf) +{ + bool bRet = false; + u32 sec_num = 1 << (nand->page_shift - 9); + u32 colnob = 2, rownob = devinfo.addr_cycle - 2; + if (nand->options & NAND_BUSWIDTH_16) + col_addr /= 2; + + /* Reset NFI HW internal state machine and flush NFI in/out FIFO */ + if (!mtk_nand_reset()) + return false; + + mtk_nand_set_mode(CNFG_OP_PRGM); + + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_READ_EN); + + DRV_WriteReg16(NFI_CON_REG16, sec_num << CON_NFI_SEC_SHIFT); + + if (full) { + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB); + if (g_bHwEcc) + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + else + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + } else { + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB); + } + + mtk_nand_set_autoformat(full); + + if (full) + if (g_bHwEcc) + ECC_Encode_Start(); + + if (!mtk_nand_set_command(NAND_CMD_SEQIN)) + goto cleanup; + //1 FIXED ME: For Any Kind of AddrCycle + if (!mtk_nand_set_address(col_addr, u4RowAddr, colnob, rownob)) + goto cleanup; + + if (!mtk_nand_status_ready(STA_NAND_BUSY)) + goto cleanup; + + bRet = true; + +cleanup: + return bRet; +} + +static bool +mtk_nand_check_dececc_done(u32 u4SecNum) +{ + u32 timeout, dec_mask; + + timeout = 0xffff; + dec_mask = (1 << u4SecNum) - 1; + while ((dec_mask != DRV_Reg(ECC_DECDONE_REG16)) && timeout > 0) + timeout--; + if (timeout == 0) { + MSG(VERIFY, "ECC_DECDONE: timeout\n"); + return false; + } + return true; +} + +static bool +mtk_nand_mcu_read_data(u8 * buf, u32 length) +{ + int timeout = 0xffff; + u32 i; + u32 *buf32 = (u32 *) buf; + if ((u32) buf % 4 || length % 4) + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW); + else + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW); + + //DRV_WriteReg32(NFI_STRADDR_REG32, 0); + mb(); + NFI_SET_REG16(NFI_CON_REG16, CON_NFI_BRD); + + if ((u32) buf % 4 || length % 4) { + for (i = 0; (i < (length)) && (timeout > 0);) { + if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) { + *buf++ = (u8) DRV_Reg32(NFI_DATAR_REG32); + i++; + } else { + timeout--; + } + if (0 == timeout) { + printk(KERN_ERR "[%s] timeout\n", __FUNCTION__); + dump_nfi(); + return false; + } + } + } else { + for (i = 0; (i < (length >> 2)) && (timeout > 0);) { + if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) { + *buf32++ = DRV_Reg32(NFI_DATAR_REG32); + i++; + } else { + timeout--; + } + if (0 == timeout) { + printk(KERN_ERR "[%s] timeout\n", __FUNCTION__); + dump_nfi(); + return false; + } + } + } + return true; +} + +static bool +mtk_nand_read_page_data(struct mtd_info *mtd, u8 * pDataBuf, u32 u4Size) +{ + return mtk_nand_mcu_read_data(pDataBuf, u4Size); +} + +static bool +mtk_nand_mcu_write_data(struct mtd_info *mtd, const u8 * buf, u32 length) +{ + u32 timeout = 0xFFFF; + u32 i; + u32 *pBuf32; + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW); + mb(); + NFI_SET_REG16(NFI_CON_REG16, CON_NFI_BWR); + pBuf32 = (u32 *) buf; + + if ((u32) buf % 4 || length % 4) + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW); + else + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW); + + if ((u32) buf % 4 || length % 4) { + for (i = 0; (i < (length)) && (timeout > 0);) { + if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) { + DRV_WriteReg32(NFI_DATAW_REG32, *buf++); + i++; + } else { + timeout--; + } + if (0 == timeout) { + printk(KERN_ERR "[%s] timeout\n", __FUNCTION__); + dump_nfi(); + return false; + } + } + } else { + for (i = 0; (i < (length >> 2)) && (timeout > 0);) { + if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) { + DRV_WriteReg32(NFI_DATAW_REG32, *pBuf32++); + i++; + } else { + timeout--; + } + if (0 == timeout) { + printk(KERN_ERR "[%s] timeout\n", __FUNCTION__); + dump_nfi(); + return false; + } + } + } + + return true; +} + +static bool +mtk_nand_write_page_data(struct mtd_info *mtd, u8 * buf, u32 size) +{ + return mtk_nand_mcu_write_data(mtd, buf, size); +} + +static void +mtk_nand_read_fdm_data(u8 * pDataBuf, u32 u4SecNum) +{ + u32 i; + u32 *pBuf32 = (u32 *) pDataBuf; + + if (pBuf32) { + for (i = 0; i < u4SecNum; ++i) { + *pBuf32++ = DRV_Reg32(NFI_FDM0L_REG32 + (i << 1)); + *pBuf32++ = DRV_Reg32(NFI_FDM0M_REG32 + (i << 1)); + } + } +} + +static u8 fdm_buf[64]; +static void +mtk_nand_write_fdm_data(struct nand_chip *chip, u8 * pDataBuf, u32 u4SecNum) +{ + u32 i, j; + u8 checksum = 0; + bool empty = true; + struct nand_oobfree *free_entry; + u32 *pBuf32; + + memcpy(fdm_buf, pDataBuf, u4SecNum * 8); + + free_entry = chip->ecc.layout->oobfree; + for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free_entry[i].length; i++) { + for (j = 0; j < free_entry[i].length; j++) { + if (pDataBuf[free_entry[i].offset + j] != 0xFF) + empty = false; + checksum ^= pDataBuf[free_entry[i].offset + j]; + } + } + + if (!empty) { + fdm_buf[free_entry[i - 1].offset + free_entry[i - 1].length] = checksum; + } + + pBuf32 = (u32 *) fdm_buf; + for (i = 0; i < u4SecNum; ++i) { + DRV_WriteReg32(NFI_FDM0L_REG32 + (i << 1), *pBuf32++); + DRV_WriteReg32(NFI_FDM0M_REG32 + (i << 1), *pBuf32++); + } +} + +static void +mtk_nand_stop_read(void) +{ + NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BRD); + mtk_nand_reset(); + if (g_bHwEcc) + ECC_Decode_End(); + DRV_WriteReg16(NFI_INTR_EN_REG16, 0); +} + +static void +mtk_nand_stop_write(void) +{ + NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BWR); + if (g_bHwEcc) + ECC_Encode_End(); + DRV_WriteReg16(NFI_INTR_EN_REG16, 0); +} + +bool +mtk_nand_exec_read_page(struct mtd_info *mtd, u32 u4RowAddr, u32 u4PageSize, u8 * pPageBuf, u8 * pFDMBuf) +{ + u8 *buf; + bool bRet = true; + struct nand_chip *nand = mtd->priv; + u32 u4SecNum = u4PageSize >> 9; + + if (((u32) pPageBuf % 16) && local_buffer_16_align) + buf = local_buffer_16_align; + else + buf = pPageBuf; + if (mtk_nand_ready_for_read(nand, u4RowAddr, 0, true, buf)) { + int j; + for (j = 0 ; j < u4SecNum; j++) { + if (!mtk_nand_read_page_data(mtd, buf+j*512, 512)) + bRet = false; + if(g_bHwEcc && !mtk_nand_check_dececc_done(j+1)) + bRet = false; + if(g_bHwEcc && !mtk_nand_check_bch_error(mtd, buf+j*512, j, u4RowAddr)) + bRet = false; + } + if (!mtk_nand_status_ready(STA_NAND_BUSY)) + bRet = false; + + mtk_nand_read_fdm_data(pFDMBuf, u4SecNum); + mtk_nand_stop_read(); + } + + if (buf == local_buffer_16_align) + memcpy(pPageBuf, buf, u4PageSize); + + return bRet; +} + +int +mtk_nand_exec_write_page(struct mtd_info *mtd, u32 u4RowAddr, u32 u4PageSize, u8 * pPageBuf, u8 * pFDMBuf) +{ + struct nand_chip *chip = mtd->priv; + u32 u4SecNum = u4PageSize >> 9; + u8 *buf; + u8 status; + + MSG(WRITE, "mtk_nand_exec_write_page, page: 0x%x\n", u4RowAddr); + + if (((u32) pPageBuf % 16) && local_buffer_16_align) { + printk(KERN_INFO "Data buffer not 16 bytes aligned: %p\n", pPageBuf); + memcpy(local_buffer_16_align, pPageBuf, mtd->writesize); + buf = local_buffer_16_align; + } else + buf = pPageBuf; + + if (mtk_nand_ready_for_write(chip, u4RowAddr, 0, true, buf)) { + mtk_nand_write_fdm_data(chip, pFDMBuf, u4SecNum); + (void)mtk_nand_write_page_data(mtd, buf, u4PageSize); + (void)mtk_nand_check_RW_count(u4PageSize); + mtk_nand_stop_write(); + (void)mtk_nand_set_command(NAND_CMD_PAGEPROG); + while (DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY) ; + } + + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) + return -EIO; + return 0; +} + +static int +get_start_end_block(struct mtd_info *mtd, int block, int *start_blk, int *end_blk) +{ + struct nand_chip *chip = mtd->priv; + int i; + + *start_blk = 0; + for (i = 0; i <= part_num; i++) + { + if (i == part_num) + { + // try the last reset partition + *end_blk = (chip->chipsize >> chip->phys_erase_shift) - 1; + if (*start_blk <= *end_blk) + { + if ((block >= *start_blk) && (block <= *end_blk)) + break; + } + } + // skip All partition entry + else if (g_pasStatic_Partition[i].size == MTDPART_SIZ_FULL) + { + continue; + } + *end_blk = *start_blk + (g_pasStatic_Partition[i].size >> chip->phys_erase_shift) - 1; + if ((block >= *start_blk) && (block <= *end_blk)) + break; + *start_blk = *end_blk + 1; + } + if (*start_blk > *end_blk) + { + return -1; + } + return 0; +} + +static int +block_remap(struct mtd_info *mtd, int block) +{ + struct nand_chip *chip = mtd->priv; + int start_blk, end_blk; + int j, block_offset; + int bad_block = 0; + + if (chip->bbt == NULL) { + printk("ERROR!! no bbt table for block_remap\n"); + return -1; + } + + if (get_start_end_block(mtd, block, &start_blk, &end_blk) < 0) { + printk("ERROR!! can not find start_blk and end_blk\n"); + return -1; + } + + block_offset = block - start_blk; + for (j = start_blk; j <= end_blk;j++) { + if (((chip->bbt[j >> 2] >> ((j<<1) & 0x6)) & 0x3) == 0x0) { + if (!block_offset) + break; + block_offset--; + } else { + bad_block++; + } + } + if (j <= end_blk) { + return j; + } else { + // remap to the bad block + for (j = end_blk; bad_block > 0; j--) + { + if (((chip->bbt[j >> 2] >> ((j<<1) & 0x6)) & 0x3) != 0x0) + { + bad_block--; + if (bad_block <= block_offset) + return j; + } + } + } + + printk("Error!! block_remap error\n"); + return -1; +} + +int +check_block_remap(struct mtd_info *mtd, int block) +{ + if (shift_on_bbt) + return block_remap(mtd, block); + else + return block; +} +EXPORT_SYMBOL(check_block_remap); + + +static int +write_next_on_fail(struct mtd_info *mtd, char *write_buf, int page, int * to_blk) +{ + struct nand_chip *chip = mtd->priv; + int i, j, to_page = 0, first_page; + char *buf, *oob; + int start_blk = 0, end_blk; + int mapped_block; + int page_per_block_bit = chip->phys_erase_shift - chip->page_shift; + int block = page >> page_per_block_bit; + + // find next available block in the same MTD partition + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + + get_start_end_block(mtd, block, &start_blk, &end_blk); + + buf = kzalloc(mtd->writesize + mtd->oobsize, GFP_KERNEL | GFP_DMA); + if (buf == NULL) + return -1; + + oob = buf + mtd->writesize; + for ((*to_blk) = block + 1; (*to_blk) <= end_blk ; (*to_blk)++) { + if (nand_bbt_get(mtd, (*to_blk) << page_per_block_bit) == 0) { + int status; + status = mtk_nand_erase_hw(mtd, (*to_blk) << page_per_block_bit); + if (status & NAND_STATUS_FAIL) { + mtk_nand_block_markbad_hw(mtd, (*to_blk) << chip->phys_erase_shift); + nand_bbt_set(mtd, (*to_blk) << page_per_block_bit, 0x3); + } else { + /* good block */ + to_page = (*to_blk) << page_per_block_bit; + break; + } + } + } + + if (!to_page) { + kfree(buf); + return -1; + } + + first_page = (page >> page_per_block_bit) << page_per_block_bit; + for (i = 0; i < (1 << page_per_block_bit); i++) { + if ((first_page + i) != page) { + mtk_nand_read_oob_hw(mtd, chip, (first_page+i)); + for (j = 0; j < mtd->oobsize; j++) + if (chip->oob_poi[j] != (unsigned char)0xff) + break; + if (j < mtd->oobsize) { + mtk_nand_exec_read_page(mtd, (first_page+i), mtd->writesize, buf, oob); + memset(oob, 0xff, mtd->oobsize); + if (mtk_nand_exec_write_page(mtd, to_page + i, mtd->writesize, (u8 *)buf, oob) != 0) { + int ret, new_blk = 0; + nand_bbt_set(mtd, to_page, 0x3); + ret = write_next_on_fail(mtd, buf, to_page + i, &new_blk); + if (ret) { + kfree(buf); + mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift); + return ret; + } + mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift); + *to_blk = new_blk; + to_page = ((*to_blk) << page_per_block_bit); + } + } + } else { + memset(chip->oob_poi, 0xff, mtd->oobsize); + if (mtk_nand_exec_write_page(mtd, to_page + i, mtd->writesize, (u8 *)write_buf, chip->oob_poi) != 0) { + int ret, new_blk = 0; + nand_bbt_set(mtd, to_page, 0x3); + ret = write_next_on_fail(mtd, write_buf, to_page + i, &new_blk); + if (ret) { + kfree(buf); + mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift); + return ret; + } + mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift); + *to_blk = new_blk; + to_page = ((*to_blk) << page_per_block_bit); + } + } + } + + kfree(buf); + + return 0; +} + +static int +mtk_nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, uint32_t offset, + int data_len, const u8 * buf, int oob_required, int page, int cached, int raw) +{ + int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift); + int block = page / page_per_block; + u16 page_in_block = page % page_per_block; + int mapped_block = block; + +#if defined(MTK_NAND_BMT) + mapped_block = get_mapping_block_index(block); + // write bad index into oob + if (mapped_block != block) + set_bad_index_to_oob(chip->oob_poi, block); + else + set_bad_index_to_oob(chip->oob_poi, FAKE_INDEX); +#else + if (shift_on_bbt) { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0) + return NAND_STATUS_FAIL; + } +#endif + do { + if (mtk_nand_exec_write_page(mtd, page_in_block + mapped_block * page_per_block, mtd->writesize, (u8 *)buf, chip->oob_poi)) { + MSG(INIT, "write fail at block: 0x%x, page: 0x%x\n", mapped_block, page_in_block); +#if defined(MTK_NAND_BMT) + if (update_bmt((page_in_block + mapped_block * page_per_block) << chip->page_shift, UPDATE_WRITE_FAIL, (u8 *) buf, chip->oob_poi)) { + MSG(INIT, "Update BMT success\n"); + return 0; + } else { + MSG(INIT, "Update BMT fail\n"); + return -EIO; + } +#else + { + int new_blk; + nand_bbt_set(mtd, page_in_block + mapped_block * page_per_block, 0x3); + if (write_next_on_fail(mtd, (char *)buf, page_in_block + mapped_block * page_per_block, &new_blk) != 0) + { + mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift); + return NAND_STATUS_FAIL; + } + mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift); + break; + } +#endif + } else + break; + } while(1); + + return 0; +} + +static void +mtk_nand_command_bp(struct mtd_info *mtd, unsigned int command, int column, int page_addr) +{ + struct nand_chip *nand = mtd->priv; + + switch (command) { + case NAND_CMD_SEQIN: + memset(g_kCMD.au1OOB, 0xFF, sizeof(g_kCMD.au1OOB)); + g_kCMD.pDataBuf = NULL; + g_kCMD.u4RowAddr = page_addr; + g_kCMD.u4ColAddr = column; + break; + + case NAND_CMD_PAGEPROG: + if (g_kCMD.pDataBuf || (0xFF != g_kCMD.au1OOB[nand_badblock_offset])) { + u8 *pDataBuf = g_kCMD.pDataBuf ? g_kCMD.pDataBuf : nand->buffers->databuf; + mtk_nand_exec_write_page(mtd, g_kCMD.u4RowAddr, mtd->writesize, pDataBuf, g_kCMD.au1OOB); + g_kCMD.u4RowAddr = (u32) - 1; + g_kCMD.u4OOBRowAddr = (u32) - 1; + } + break; + + case NAND_CMD_READOOB: + g_kCMD.u4RowAddr = page_addr; + g_kCMD.u4ColAddr = column + mtd->writesize; + break; + + case NAND_CMD_READ0: + g_kCMD.u4RowAddr = page_addr; + g_kCMD.u4ColAddr = column; + break; + + case NAND_CMD_ERASE1: + nand->state=FL_ERASING; + (void)mtk_nand_reset(); + mtk_nand_set_mode(CNFG_OP_ERASE); + (void)mtk_nand_set_command(NAND_CMD_ERASE1); + (void)mtk_nand_set_address(0, page_addr, 0, devinfo.addr_cycle - 2); + break; + + case NAND_CMD_ERASE2: + (void)mtk_nand_set_command(NAND_CMD_ERASE2); + while (DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY) + ; + break; + + case NAND_CMD_STATUS: + (void)mtk_nand_reset(); + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW); + mtk_nand_set_mode(CNFG_OP_SRD); + mtk_nand_set_mode(CNFG_READ_EN); + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB); + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + (void)mtk_nand_set_command(NAND_CMD_STATUS); + NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_NOB_MASK); + mb(); + DRV_WriteReg16(NFI_CON_REG16, CON_NFI_SRD | (1 << CON_NFI_NOB_SHIFT)); + g_bcmdstatus = true; + break; + + case NAND_CMD_RESET: + (void)mtk_nand_reset(); + DRV_WriteReg16(NFI_INTR_EN_REG16, INTR_RST_DONE_EN); + (void)mtk_nand_set_command(NAND_CMD_RESET); + DRV_WriteReg16(NFI_BASE+0x44, 0xF1); + while(!(DRV_Reg16(NFI_INTR_REG16)&INTR_RST_DONE_EN)) + ; + break; + + case NAND_CMD_READID: + mtk_nand_reset(); + /* Disable HW ECC */ + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB); + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_READ_EN | CNFG_BYTE_RW); + (void)mtk_nand_reset(); + mb(); + mtk_nand_set_mode(CNFG_OP_SRD); + (void)mtk_nand_set_command(NAND_CMD_READID); + (void)mtk_nand_set_address(0, 0, 1, 0); + DRV_WriteReg16(NFI_CON_REG16, CON_NFI_SRD); + while (DRV_Reg32(NFI_STA_REG32) & STA_DATAR_STATE) + ; + break; + + default: + BUG(); + break; + } +} + +static void +mtk_nand_select_chip(struct mtd_info *mtd, int chip) +{ + if ((chip == -1) && (false == g_bInitDone)) { + struct nand_chip *nand = mtd->priv; + struct mtk_nand_host *host = nand->priv; + struct mtk_nand_host_hw *hw = host->hw; + u32 spare_per_sector = mtd->oobsize / (mtd->writesize / 512); + u32 ecc_bit = 4; + u32 spare_bit = PAGEFMT_SPARE_16; + + if (spare_per_sector >= 28) { + spare_bit = PAGEFMT_SPARE_28; + ecc_bit = 12; + spare_per_sector = 28; + } else if (spare_per_sector >= 27) { + spare_bit = PAGEFMT_SPARE_27; + ecc_bit = 8; + spare_per_sector = 27; + } else if (spare_per_sector >= 26) { + spare_bit = PAGEFMT_SPARE_26; + ecc_bit = 8; + spare_per_sector = 26; + } else if (spare_per_sector >= 16) { + spare_bit = PAGEFMT_SPARE_16; + ecc_bit = 4; + spare_per_sector = 16; + } else { + MSG(INIT, "[NAND]: NFI not support oobsize: %x\n", spare_per_sector); + ASSERT(0); + } + mtd->oobsize = spare_per_sector*(mtd->writesize/512); + MSG(INIT, "[NAND]select ecc bit:%d, sparesize :%d spare_per_sector=%d\n",ecc_bit,mtd->oobsize,spare_per_sector); + /* Setup PageFormat */ + if (4096 == mtd->writesize) { + NFI_SET_REG16(NFI_PAGEFMT_REG16, (spare_bit << PAGEFMT_SPARE_SHIFT) | PAGEFMT_4K); + nand->cmdfunc = mtk_nand_command_bp; + } else if (2048 == mtd->writesize) { + NFI_SET_REG16(NFI_PAGEFMT_REG16, (spare_bit << PAGEFMT_SPARE_SHIFT) | PAGEFMT_2K); + nand->cmdfunc = mtk_nand_command_bp; + } + ECC_Config(hw,ecc_bit); + g_bInitDone = true; + } + switch (chip) { + case -1: + break; + case 0: + case 1: + /* Jun Shen, 2011.04.13 */ + /* Note: MT6577 EVB NAND is mounted on CS0, but FPGA is CS1 */ + DRV_WriteReg16(NFI_CSEL_REG16, chip); + /* Jun Shen, 2011.04.13 */ + break; + } +} + +static uint8_t +mtk_nand_read_byte(struct mtd_info *mtd) +{ + uint8_t retval = 0; + + if (!mtk_nand_pio_ready()) { + printk("pio ready timeout\n"); + retval = false; + } + + if (g_bcmdstatus) { + retval = DRV_Reg8(NFI_DATAR_REG32); + NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_NOB_MASK); + mtk_nand_reset(); + if (g_bHwEcc) { + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + } else { + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + } + g_bcmdstatus = false; + } else + retval = DRV_Reg8(NFI_DATAR_REG32); + + return retval; +} + +static void +mtk_nand_read_buf(struct mtd_info *mtd, uint8_t * buf, int len) +{ + struct nand_chip *nand = (struct nand_chip *)mtd->priv; + struct NAND_CMD *pkCMD = &g_kCMD; + u32 u4ColAddr = pkCMD->u4ColAddr; + u32 u4PageSize = mtd->writesize; + + if (u4ColAddr < u4PageSize) { + if ((u4ColAddr == 0) && (len >= u4PageSize)) { + mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, buf, pkCMD->au1OOB); + if (len > u4PageSize) { + u32 u4Size = min(len - u4PageSize, sizeof(pkCMD->au1OOB)); + memcpy(buf + u4PageSize, pkCMD->au1OOB, u4Size); + } + } else { + mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, nand->buffers->databuf, pkCMD->au1OOB); + memcpy(buf, nand->buffers->databuf + u4ColAddr, len); + } + pkCMD->u4OOBRowAddr = pkCMD->u4RowAddr; + } else { + u32 u4Offset = u4ColAddr - u4PageSize; + u32 u4Size = min(len - u4Offset, sizeof(pkCMD->au1OOB)); + if (pkCMD->u4OOBRowAddr != pkCMD->u4RowAddr) { + mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, nand->buffers->databuf, pkCMD->au1OOB); + pkCMD->u4OOBRowAddr = pkCMD->u4RowAddr; + } + memcpy(buf, pkCMD->au1OOB + u4Offset, u4Size); + } + pkCMD->u4ColAddr += len; +} + +static void +mtk_nand_write_buf(struct mtd_info *mtd, const uint8_t * buf, int len) +{ + struct NAND_CMD *pkCMD = &g_kCMD; + u32 u4ColAddr = pkCMD->u4ColAddr; + u32 u4PageSize = mtd->writesize; + int i4Size, i; + + if (u4ColAddr >= u4PageSize) { + u32 u4Offset = u4ColAddr - u4PageSize; + u8 *pOOB = pkCMD->au1OOB + u4Offset; + i4Size = min(len, (int)(sizeof(pkCMD->au1OOB) - u4Offset)); + for (i = 0; i < i4Size; i++) { + pOOB[i] &= buf[i]; + } + } else { + pkCMD->pDataBuf = (u8 *) buf; + } + + pkCMD->u4ColAddr += len; +} + +static int +mtk_nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t * buf, int oob_required) +{ + mtk_nand_write_buf(mtd, buf, mtd->writesize); + mtk_nand_write_buf(mtd, chip->oob_poi, mtd->oobsize); + return 0; +} + +static int +mtk_nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, uint8_t * buf, int oob_required, int page) +{ + struct NAND_CMD *pkCMD = &g_kCMD; + u32 u4ColAddr = pkCMD->u4ColAddr; + u32 u4PageSize = mtd->writesize; + + if (u4ColAddr == 0) { + mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, buf, chip->oob_poi); + pkCMD->u4ColAddr += u4PageSize + mtd->oobsize; + } + + return 0; +} + +static int +mtk_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, u8 * buf, int page) +{ + int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift); + int block = page / page_per_block; + u16 page_in_block = page % page_per_block; + int mapped_block = block; + +#if defined (MTK_NAND_BMT) + mapped_block = get_mapping_block_index(block); + if (mtk_nand_exec_read_page(mtd, page_in_block + mapped_block * page_per_block, + mtd->writesize, buf, chip->oob_poi)) + return 0; +#else + if (shift_on_bbt) { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0) + return NAND_STATUS_FAIL; + } + + if (mtk_nand_exec_read_page(mtd, page_in_block + mapped_block * page_per_block, mtd->writesize, buf, chip->oob_poi)) + return 0; + else + return -EIO; +#endif +} + +int +mtk_nand_erase_hw(struct mtd_info *mtd, int page) +{ + struct nand_chip *chip = (struct nand_chip *)mtd->priv; + + chip->erase_cmd(mtd, page); + + return chip->waitfunc(mtd, chip); +} + +static int +mtk_nand_erase(struct mtd_info *mtd, int page) +{ + // get mapping + struct nand_chip *chip = mtd->priv; + int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift); + int page_in_block = page % page_per_block; + int block = page / page_per_block; + int mapped_block = block; + +#if defined(MTK_NAND_BMT) + mapped_block = get_mapping_block_index(block); +#else + if (shift_on_bbt) { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0) + return NAND_STATUS_FAIL; + } +#endif + + do { + int status = mtk_nand_erase_hw(mtd, page_in_block + page_per_block * mapped_block); + + if (status & NAND_STATUS_FAIL) { +#if defined (MTK_NAND_BMT) + if (update_bmt( (page_in_block + mapped_block * page_per_block) << chip->page_shift, + UPDATE_ERASE_FAIL, NULL, NULL)) + { + MSG(INIT, "Erase fail at block: 0x%x, update BMT success\n", mapped_block); + return 0; + } else { + MSG(INIT, "Erase fail at block: 0x%x, update BMT fail\n", mapped_block); + return NAND_STATUS_FAIL; + } +#else + mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift); + nand_bbt_set(mtd, page_in_block + mapped_block * page_per_block, 0x3); + if (shift_on_bbt) { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0) + return NAND_STATUS_FAIL; + } else + return NAND_STATUS_FAIL; +#endif + } else + break; + } while(1); + + return 0; +} + +static int +mtk_nand_read_oob_raw(struct mtd_info *mtd, uint8_t * buf, int page_addr, int len) +{ + struct nand_chip *chip = (struct nand_chip *)mtd->priv; + u32 col_addr = 0; + u32 sector = 0; + int res = 0; + u32 colnob = 2, rawnob = devinfo.addr_cycle - 2; + int randomread = 0; + int read_len = 0; + int sec_num = 1<<(chip->page_shift-9); + int spare_per_sector = mtd->oobsize/sec_num; + + if (len > NAND_MAX_OOBSIZE || len % OOB_AVAI_PER_SECTOR || !buf) { + printk(KERN_WARNING "[%s] invalid parameter, len: %d, buf: %p\n", __FUNCTION__, len, buf); + return -EINVAL; + } + if (len > spare_per_sector) + randomread = 1; + if (!randomread || !(devinfo.advancedmode & RAMDOM_READ)) { + while (len > 0) { + read_len = min(len, spare_per_sector); + col_addr = NAND_SECTOR_SIZE + sector * (NAND_SECTOR_SIZE + spare_per_sector); // TODO: Fix this hard-code 16 + if (!mtk_nand_ready_for_read(chip, page_addr, col_addr, false, NULL)) { + printk(KERN_WARNING "mtk_nand_ready_for_read return failed\n"); + res = -EIO; + goto error; + } + if (!mtk_nand_mcu_read_data(buf + spare_per_sector * sector, read_len)) { + printk(KERN_WARNING "mtk_nand_mcu_read_data return failed\n"); + res = -EIO; + goto error; + } + mtk_nand_check_RW_count(read_len); + mtk_nand_stop_read(); + sector++; + len -= read_len; + } + } else { + col_addr = NAND_SECTOR_SIZE; + if (chip->options & NAND_BUSWIDTH_16) + col_addr /= 2; + if (!mtk_nand_reset()) + goto error; + mtk_nand_set_mode(0x6000); + NFI_SET_REG16(NFI_CNFG_REG16, CNFG_READ_EN); + DRV_WriteReg16(NFI_CON_REG16, 4 << CON_NFI_SEC_SHIFT); + + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB); + NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + + mtk_nand_set_autoformat(false); + + if (!mtk_nand_set_command(NAND_CMD_READ0)) + goto error; + //1 FIXED ME: For Any Kind of AddrCycle + if (!mtk_nand_set_address(col_addr, page_addr, colnob, rawnob)) + goto error; + if (!mtk_nand_set_command(NAND_CMD_READSTART)) + goto error; + if (!mtk_nand_status_ready(STA_NAND_BUSY)) + goto error; + read_len = min(len, spare_per_sector); + if (!mtk_nand_mcu_read_data(buf + spare_per_sector * sector, read_len)) { + printk(KERN_WARNING "mtk_nand_mcu_read_data return failed first 16\n"); + res = -EIO; + goto error; + } + sector++; + len -= read_len; + mtk_nand_stop_read(); + while (len > 0) { + read_len = min(len, spare_per_sector); + if (!mtk_nand_set_command(0x05)) + goto error; + col_addr = NAND_SECTOR_SIZE + sector * (NAND_SECTOR_SIZE + spare_per_sector); + if (chip->options & NAND_BUSWIDTH_16) + col_addr /= 2; + DRV_WriteReg32(NFI_COLADDR_REG32, col_addr); + DRV_WriteReg16(NFI_ADDRNOB_REG16, 2); + DRV_WriteReg16(NFI_CON_REG16, 4 << CON_NFI_SEC_SHIFT); + if (!mtk_nand_status_ready(STA_ADDR_STATE)) + goto error; + if (!mtk_nand_set_command(0xE0)) + goto error; + if (!mtk_nand_status_ready(STA_NAND_BUSY)) + goto error; + if (!mtk_nand_mcu_read_data(buf + spare_per_sector * sector, read_len)) { + printk(KERN_WARNING "mtk_nand_mcu_read_data return failed first 16\n"); + res = -EIO; + goto error; + } + mtk_nand_stop_read(); + sector++; + len -= read_len; + } + } +error: + NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BRD); + return res; +} + +static int +mtk_nand_write_oob_raw(struct mtd_info *mtd, const uint8_t * buf, int page_addr, int len) +{ + struct nand_chip *chip = mtd->priv; + u32 col_addr = 0; + u32 sector = 0; + int write_len = 0; + int status; + int sec_num = 1<<(chip->page_shift-9); + int spare_per_sector = mtd->oobsize/sec_num; + + if (len > NAND_MAX_OOBSIZE || len % OOB_AVAI_PER_SECTOR || !buf) { + printk(KERN_WARNING "[%s] invalid parameter, len: %d, buf: %p\n", __FUNCTION__, len, buf); + return -EINVAL; + } + + while (len > 0) { + write_len = min(len, spare_per_sector); + col_addr = sector * (NAND_SECTOR_SIZE + spare_per_sector) + NAND_SECTOR_SIZE; + if (!mtk_nand_ready_for_write(chip, page_addr, col_addr, false, NULL)) + return -EIO; + if (!mtk_nand_mcu_write_data(mtd, buf + sector * spare_per_sector, write_len)) + return -EIO; + (void)mtk_nand_check_RW_count(write_len); + NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BWR); + (void)mtk_nand_set_command(NAND_CMD_PAGEPROG); + while (DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY) + ; + status = chip->waitfunc(mtd, chip); + if (status & NAND_STATUS_FAIL) { + printk(KERN_INFO "status: %d\n", status); + return -EIO; + } + len -= write_len; + sector++; + } + + return 0; +} + +static int +mtk_nand_write_oob_hw(struct mtd_info *mtd, struct nand_chip *chip, int page) +{ + int i, iter; + int sec_num = 1<<(chip->page_shift-9); + int spare_per_sector = mtd->oobsize/sec_num; + + memcpy(local_oob_buf, chip->oob_poi, mtd->oobsize); + + // copy ecc data + for (i = 0; i < chip->ecc.layout->eccbytes; i++) { + iter = (i / (spare_per_sector-OOB_AVAI_PER_SECTOR)) * spare_per_sector + OOB_AVAI_PER_SECTOR + i % (spare_per_sector-OOB_AVAI_PER_SECTOR); + local_oob_buf[iter] = chip->oob_poi[chip->ecc.layout->eccpos[i]]; + } + + // copy FDM data + for (i = 0; i < sec_num; i++) + memcpy(&local_oob_buf[i * spare_per_sector], &chip->oob_poi[i * OOB_AVAI_PER_SECTOR], OOB_AVAI_PER_SECTOR); + + return mtk_nand_write_oob_raw(mtd, local_oob_buf, page, mtd->oobsize); +} + +static int mtk_nand_write_oob(struct mtd_info *mtd, struct nand_chip *chip, int page) +{ + int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift); + int block = page / page_per_block; + u16 page_in_block = page % page_per_block; + int mapped_block = block; + +#if defined(MTK_NAND_BMT) + mapped_block = get_mapping_block_index(block); + // write bad index into oob + if (mapped_block != block) + set_bad_index_to_oob(chip->oob_poi, block); + else + set_bad_index_to_oob(chip->oob_poi, FAKE_INDEX); +#else + if (shift_on_bbt) + { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0) + return NAND_STATUS_FAIL; + } +#endif + do { + if (mtk_nand_write_oob_hw(mtd, chip, page_in_block + mapped_block * page_per_block /* page */)) { + MSG(INIT, "write oob fail at block: 0x%x, page: 0x%x\n", mapped_block, page_in_block); +#if defined(MTK_NAND_BMT) + if (update_bmt((page_in_block + mapped_block * page_per_block) << chip->page_shift, + UPDATE_WRITE_FAIL, NULL, chip->oob_poi)) + { + MSG(INIT, "Update BMT success\n"); + return 0; + } else { + MSG(INIT, "Update BMT fail\n"); + return -EIO; + } +#else + mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift); + nand_bbt_set(mtd, page_in_block + mapped_block * page_per_block, 0x3); + if (shift_on_bbt) { + mapped_block = block_remap(mtd, mapped_block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0) + return NAND_STATUS_FAIL; + } else { + return NAND_STATUS_FAIL; + } +#endif + } else + break; + } while (1); + + return 0; +} + +int +mtk_nand_block_markbad_hw(struct mtd_info *mtd, loff_t offset) +{ + struct nand_chip *chip = mtd->priv; + int block = (int)offset >> chip->phys_erase_shift; + int page = block * (1 << (chip->phys_erase_shift - chip->page_shift)); + u8 buf[8]; + + memset(buf, 0xFF, 8); + buf[0] = 0; + return mtk_nand_write_oob_raw(mtd, buf, page, 8); +} + +static int +mtk_nand_block_markbad(struct mtd_info *mtd, loff_t offset) +{ + struct nand_chip *chip = mtd->priv; + int block = (int)offset >> chip->phys_erase_shift; + int ret; + int mapped_block = block; + + nand_get_device(chip, mtd, FL_WRITING); + +#if defined(MTK_NAND_BMT) + mapped_block = get_mapping_block_index(block); + ret = mtk_nand_block_markbad_hw(mtd, mapped_block << chip->phys_erase_shift); +#else + if (shift_on_bbt) { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) { + printk("NAND mark bad failed\n"); + nand_release_device(mtd); + return NAND_STATUS_FAIL; + } + } + ret = mtk_nand_block_markbad_hw(mtd, mapped_block << chip->phys_erase_shift); +#endif + nand_release_device(mtd); + + return ret; +} + +int +mtk_nand_read_oob_hw(struct mtd_info *mtd, struct nand_chip *chip, int page) +{ + int i; + u8 iter = 0; + + int sec_num = 1<<(chip->page_shift-9); + int spare_per_sector = mtd->oobsize/sec_num; + + if (mtk_nand_read_oob_raw(mtd, chip->oob_poi, page, mtd->oobsize)) { + printk(KERN_ERR "[%s]mtk_nand_read_oob_raw return failed\n", __FUNCTION__); + return -EIO; + } + + // adjust to ecc physical layout to memory layout + /*********************************************************/ + /* FDM0 | ECC0 | FDM1 | ECC1 | FDM2 | ECC2 | FDM3 | ECC3 */ + /* 8B | 8B | 8B | 8B | 8B | 8B | 8B | 8B */ + /*********************************************************/ + + memcpy(local_oob_buf, chip->oob_poi, mtd->oobsize); + // copy ecc data + for (i = 0; i < chip->ecc.layout->eccbytes; i++) { + iter = (i / (spare_per_sector-OOB_AVAI_PER_SECTOR)) * spare_per_sector + OOB_AVAI_PER_SECTOR + i % (spare_per_sector-OOB_AVAI_PER_SECTOR); + chip->oob_poi[chip->ecc.layout->eccpos[i]] = local_oob_buf[iter]; + } + + // copy FDM data + for (i = 0; i < sec_num; i++) { + memcpy(&chip->oob_poi[i * OOB_AVAI_PER_SECTOR], &local_oob_buf[i * spare_per_sector], OOB_AVAI_PER_SECTOR); + } + + return 0; +} + +static int +mtk_nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip, int page) +{ + int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift); + int block = page / page_per_block; + u16 page_in_block = page % page_per_block; + int mapped_block = block; + +#if defined (MTK_NAND_BMT) + mapped_block = get_mapping_block_index(block); + mtk_nand_read_oob_hw(mtd, chip, page_in_block + mapped_block * page_per_block); +#else + if (shift_on_bbt) { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) + return NAND_STATUS_FAIL; + // allow to read oob even if the block is bad + } + if (mtk_nand_read_oob_hw(mtd, chip, page_in_block + mapped_block * page_per_block)!=0) + return -1; +#endif + return 0; +} + +int +mtk_nand_block_bad_hw(struct mtd_info *mtd, loff_t ofs) +{ + struct nand_chip *chip = (struct nand_chip *)mtd->priv; + int page_addr = (int)(ofs >> chip->page_shift); + unsigned int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift); + unsigned char oob_buf[8]; + + page_addr &= ~(page_per_block - 1); + if (mtk_nand_read_oob_raw(mtd, oob_buf, page_addr, sizeof(oob_buf))) { + printk(KERN_WARNING "mtk_nand_read_oob_raw return error\n"); + return 1; + } + + if (oob_buf[0] != 0xff) { + printk(KERN_WARNING "Bad block detected at 0x%x, oob_buf[0] is 0x%x\n", page_addr, oob_buf[0]); + // dump_nfi(); + return 1; + } + + return 0; +} + +static int +mtk_nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) +{ + int chipnr = 0; + struct nand_chip *chip = (struct nand_chip *)mtd->priv; + int block = (int)ofs >> chip->phys_erase_shift; + int mapped_block = block; + int ret; + + if (getchip) { + chipnr = (int)(ofs >> chip->chip_shift); + nand_get_device(chip, mtd, FL_READING); + /* Select the NAND device */ + chip->select_chip(mtd, chipnr); + } + +#if defined(MTK_NAND_BMT) + mapped_block = get_mapping_block_index(block); +#else + if (shift_on_bbt) { + mapped_block = block_remap(mtd, block); + if (mapped_block == -1) { + if (getchip) + nand_release_device(mtd); + return NAND_STATUS_FAIL; + } + } +#endif + + ret = mtk_nand_block_bad_hw(mtd, mapped_block << chip->phys_erase_shift); +#if defined (MTK_NAND_BMT) + if (ret) { + MSG(INIT, "Unmapped bad block: 0x%x\n", mapped_block); + if (update_bmt(mapped_block << chip->phys_erase_shift, UPDATE_UNMAPPED_BLOCK, NULL, NULL)) { + MSG(INIT, "Update BMT success\n"); + ret = 0; + } else { + MSG(INIT, "Update BMT fail\n"); + ret = 1; + } + } +#endif + + if (getchip) + nand_release_device(mtd); + + return ret; +} + +#ifdef CONFIG_MTD_NAND_VERIFY_WRITE +char gacBuf[4096 + 288]; + +static int +mtk_nand_verify_buf(struct mtd_info *mtd, const uint8_t * buf, int len) +{ + struct nand_chip *chip = (struct nand_chip *)mtd->priv; + struct NAND_CMD *pkCMD = &g_kCMD; + u32 u4PageSize = mtd->writesize; + u32 *pSrc, *pDst; + int i; + + mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, gacBuf, gacBuf + u4PageSize); + + pSrc = (u32 *) buf; + pDst = (u32 *) gacBuf; + len = len / sizeof(u32); + for (i = 0; i < len; ++i) { + if (*pSrc != *pDst) { + MSG(VERIFY, "mtk_nand_verify_buf page fail at page %d\n", pkCMD->u4RowAddr); + return -1; + } + pSrc++; + pDst++; + } + + pSrc = (u32 *) chip->oob_poi; + pDst = (u32 *) (gacBuf + u4PageSize); + + if ((pSrc[0] != pDst[0]) || (pSrc[1] != pDst[1]) || (pSrc[2] != pDst[2]) || (pSrc[3] != pDst[3]) || (pSrc[4] != pDst[4]) || (pSrc[5] != pDst[5])) { + // TODO: Ask Designer Why? + //(pSrc[6] != pDst[6]) || (pSrc[7] != pDst[7])) + MSG(VERIFY, "mtk_nand_verify_buf oob fail at page %d\n", pkCMD->u4RowAddr); + MSG(VERIFY, "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", pSrc[0], pSrc[1], pSrc[2], pSrc[3], pSrc[4], pSrc[5], pSrc[6], pSrc[7]); + MSG(VERIFY, "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", pDst[0], pDst[1], pDst[2], pDst[3], pDst[4], pDst[5], pDst[6], pDst[7]); + return -1; + } + return 0; +} +#endif + +static void +mtk_nand_init_hw(struct mtk_nand_host *host) { + struct mtk_nand_host_hw *hw = host->hw; + u32 data; + + data = DRV_Reg32(RALINK_SYSCTL_BASE+0x60); + data &= ~((0x3<<18)|(0x3<<16)); + data |= ((0x2<<18) |(0x2<<16)); + DRV_WriteReg32(RALINK_SYSCTL_BASE+0x60, data); + + MSG(INIT, "Enable NFI Clock\n"); + nand_enable_clock(); + + g_bInitDone = false; + g_kCMD.u4OOBRowAddr = (u32) - 1; + + /* Set default NFI access timing control */ + DRV_WriteReg32(NFI_ACCCON_REG32, hw->nfi_access_timing); + DRV_WriteReg16(NFI_CNFG_REG16, 0); + DRV_WriteReg16(NFI_PAGEFMT_REG16, 0); + + /* Reset the state machine and data FIFO, because flushing FIFO */ + (void)mtk_nand_reset(); + + /* Set the ECC engine */ + if (hw->nand_ecc_mode == NAND_ECC_HW) { + MSG(INIT, "%s : Use HW ECC\n", MODULE_NAME); + if (g_bHwEcc) + NFI_SET_REG32(NFI_CNFG_REG16, CNFG_HW_ECC_EN); + ECC_Config(host->hw,4); + mtk_nand_configure_fdm(8); + mtk_nand_configure_lock(); + } + + NFI_SET_REG16(NFI_IOCON_REG16, 0x47); +} + +static int mtk_nand_dev_ready(struct mtd_info *mtd) +{ + return !(DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY); +} + +#define FACT_BBT_BLOCK_NUM 32 // use the latest 32 BLOCK for factory bbt table +#define FACT_BBT_OOB_SIGNATURE 1 +#define FACT_BBT_SIGNATURE_LEN 7 +const u8 oob_signature[] = "mtknand"; +static u8 *fact_bbt = 0; +static u32 bbt_size = 0; + +static int +read_fact_bbt(struct mtd_info *mtd, unsigned int page) +{ + struct nand_chip *chip = mtd->priv; + + // read oob + if (mtk_nand_read_oob_hw(mtd, chip, page)==0) + { + if (chip->oob_poi[nand_badblock_offset] != 0xFF) + { + printk("Bad Block on Page %x\n", page); + return -1; + } + if (memcmp(&chip->oob_poi[FACT_BBT_OOB_SIGNATURE], oob_signature, FACT_BBT_SIGNATURE_LEN) != 0) + { + printk("compare signature failed %x\n", page); + return -1; + } + if (mtk_nand_exec_read_page(mtd, page, mtd->writesize, chip->buffers->databuf, chip->oob_poi)) + { + printk("Signature matched and data read!\n"); + memcpy(fact_bbt, chip->buffers->databuf, (bbt_size <= mtd->writesize)? bbt_size:mtd->writesize); + return 0; + } + + } + printk("failed at page %x\n", page); + return -1; +} + +static int +load_fact_bbt(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd->priv; + int i; + u32 total_block; + + total_block = 1 << (chip->chip_shift - chip->phys_erase_shift); + bbt_size = total_block >> 2; + + if ((!fact_bbt) && (bbt_size)) + fact_bbt = (u8 *)kmalloc(bbt_size, GFP_KERNEL); + if (!fact_bbt) + return -1; + + for (i = total_block - 1; i >= (total_block - FACT_BBT_BLOCK_NUM); i--) + { + if (read_fact_bbt(mtd, i << (chip->phys_erase_shift - chip->page_shift)) == 0) + { + printk("load_fact_bbt success %d\n", i); + return 0; + } + + } + printk("load_fact_bbt failed\n"); + return -1; +} + +static int +mtk_nand_probe(struct platform_device *pdev) +{ + struct mtd_part_parser_data ppdata; + struct mtk_nand_host_hw *hw; + struct mtd_info *mtd; + struct nand_chip *nand_chip; + u8 ext_id1, ext_id2, ext_id3; + int err = 0; + int id; + u32 ext_id; + int i; + u32 data; + + data = DRV_Reg32(RALINK_SYSCTL_BASE+0x60); + data &= ~((0x3<<18)|(0x3<<16)); + data |= ((0x2<<18) |(0x2<<16)); + DRV_WriteReg32(RALINK_SYSCTL_BASE+0x60, data); + + hw = &mt7621_nand_hw, + BUG_ON(!hw); + /* Allocate memory for the device structure (and zero it) */ + host = kzalloc(sizeof(struct mtk_nand_host), GFP_KERNEL); + if (!host) { + MSG(INIT, "mtk_nand: failed to allocate device structure.\n"); + return -ENOMEM; + } + + /* Allocate memory for 16 byte aligned buffer */ + local_buffer_16_align = local_buffer + 16 - ((u32) local_buffer % 16); + printk(KERN_INFO "Allocate 16 byte aligned buffer: %p\n", local_buffer_16_align); + host->hw = hw; + + /* init mtd data structure */ + nand_chip = &host->nand_chip; + nand_chip->priv = host; /* link the private data structures */ + + mtd = &host->mtd; + mtd->priv = nand_chip; + mtd->owner = THIS_MODULE; + mtd->name = "MT7621-NAND"; + + hw->nand_ecc_mode = NAND_ECC_HW; + + /* Set address of NAND IO lines */ + nand_chip->IO_ADDR_R = (void __iomem *)NFI_DATAR_REG32; + nand_chip->IO_ADDR_W = (void __iomem *)NFI_DATAW_REG32; + nand_chip->chip_delay = 20; /* 20us command delay time */ + nand_chip->ecc.mode = hw->nand_ecc_mode; /* enable ECC */ + nand_chip->ecc.strength = 1; + nand_chip->read_byte = mtk_nand_read_byte; + nand_chip->read_buf = mtk_nand_read_buf; + nand_chip->write_buf = mtk_nand_write_buf; +#ifdef CONFIG_MTD_NAND_VERIFY_WRITE + nand_chip->verify_buf = mtk_nand_verify_buf; +#endif + nand_chip->select_chip = mtk_nand_select_chip; + nand_chip->dev_ready = mtk_nand_dev_ready; + nand_chip->cmdfunc = mtk_nand_command_bp; + nand_chip->ecc.read_page = mtk_nand_read_page_hwecc; + nand_chip->ecc.write_page = mtk_nand_write_page_hwecc; + + nand_chip->ecc.layout = &nand_oob_64; + nand_chip->ecc.size = hw->nand_ecc_size; //2048 + nand_chip->ecc.bytes = hw->nand_ecc_bytes; //32 + + // For BMT, we need to revise driver architecture + nand_chip->write_page = mtk_nand_write_page; + nand_chip->ecc.write_oob = mtk_nand_write_oob; + nand_chip->block_markbad = mtk_nand_block_markbad; // need to add nand_get_device()/nand_release_device(). + // nand_chip->erase = mtk_nand_erase; + // nand_chip->read_page = mtk_nand_read_page; + nand_chip->ecc.read_oob = mtk_nand_read_oob; + nand_chip->block_bad = mtk_nand_block_bad; + + //Qwert:Add for Uboot + mtk_nand_init_hw(host); + /* Select the device */ + nand_chip->select_chip(mtd, NFI_DEFAULT_CS); + + /* + * Reset the chip, required by some chips (e.g. Micron MT29FxGxxxxx) + * after power-up + */ + nand_chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); + + memset(&devinfo, 0 , sizeof(flashdev_info)); + + /* Send the command for reading device ID */ + + nand_chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1); + + /* Read manufacturer and device IDs */ + manu_id = nand_chip->read_byte(mtd); + dev_id = nand_chip->read_byte(mtd); + id = dev_id | (manu_id << 8); + ext_id1 = nand_chip->read_byte(mtd); + ext_id2 = nand_chip->read_byte(mtd); + ext_id3 = nand_chip->read_byte(mtd); + ext_id = ext_id1 << 16 | ext_id2 << 8 | ext_id3; + if (!get_device_info(id, ext_id, &devinfo)) { + u32 chip_mode = RALINK_REG(RALINK_SYSCTL_BASE+0x010)&0x0F; + MSG(INIT, "Not Support this Device! \r\n"); + memset(&devinfo, 0 , sizeof(flashdev_info)); + MSG(INIT, "chip_mode=%08X\n",chip_mode); + + /* apply bootstrap first */ + devinfo.addr_cycle = 5; + devinfo.iowidth = 8; + + switch (chip_mode) { + case 10: + devinfo.pagesize = 2048; + devinfo.sparesize = 128; + devinfo.totalsize = 128; + devinfo.blocksize = 128; + break; + case 11: + devinfo.pagesize = 4096; + devinfo.sparesize = 128; + devinfo.totalsize = 1024; + devinfo.blocksize = 256; + break; + case 12: + devinfo.pagesize = 4096; + devinfo.sparesize = 224; + devinfo.totalsize = 2048; + devinfo.blocksize = 512; + break; + default: + case 1: + devinfo.pagesize = 2048; + devinfo.sparesize = 64; + devinfo.totalsize = 128; + devinfo.blocksize = 128; + break; + } + + devinfo.timmingsetting = NFI_DEFAULT_ACCESS_TIMING; + devinfo.devciename[0] = 'U'; + devinfo.advancedmode = 0; + } + mtd->writesize = devinfo.pagesize; + mtd->erasesize = (devinfo.blocksize<<10); + mtd->oobsize = devinfo.sparesize; + + nand_chip->chipsize = (devinfo.totalsize<<20); + nand_chip->page_shift = ffs(mtd->writesize) - 1; + nand_chip->pagemask = (nand_chip->chipsize >> nand_chip->page_shift) - 1; + nand_chip->phys_erase_shift = ffs(mtd->erasesize) - 1; + nand_chip->chip_shift = ffs(nand_chip->chipsize) - 1;//0x1C;//ffs(nand_chip->chipsize) - 1; + nand_chip->oob_poi = nand_chip->buffers->databuf + mtd->writesize; + nand_chip->badblockpos = 0; + + if (devinfo.pagesize == 4096) + nand_chip->ecc.layout = &nand_oob_128; + else if (devinfo.pagesize == 2048) + nand_chip->ecc.layout = &nand_oob_64; + else if (devinfo.pagesize == 512) + nand_chip->ecc.layout = &nand_oob_16; + + nand_chip->ecc.layout->eccbytes = devinfo.sparesize-OOB_AVAI_PER_SECTOR*(devinfo.pagesize/NAND_SECTOR_SIZE); + for (i = 0; i < nand_chip->ecc.layout->eccbytes; i++) + nand_chip->ecc.layout->eccpos[i]=OOB_AVAI_PER_SECTOR*(devinfo.pagesize/NAND_SECTOR_SIZE)+i; + + MSG(INIT, "Support this Device in MTK table! %x \r\n", id); + hw->nfi_bus_width = devinfo.iowidth; + DRV_WriteReg32(NFI_ACCCON_REG32, devinfo.timmingsetting); + + /* 16-bit bus width */ + if (hw->nfi_bus_width == 16) { + MSG(INIT, "%s : Set the 16-bit I/O settings!\n", MODULE_NAME); + nand_chip->options |= NAND_BUSWIDTH_16; + } + mtd->oobsize = devinfo.sparesize; + hw->nfi_cs_num = 1; + + /* Scan to find existance of the device */ + if (nand_scan(mtd, hw->nfi_cs_num)) { + MSG(INIT, "%s : nand_scan fail.\n", MODULE_NAME); + err = -ENXIO; + goto out; + } + + g_page_size = mtd->writesize; + platform_set_drvdata(pdev, host); + if (hw->nfi_bus_width == 16) { + NFI_SET_REG16(NFI_PAGEFMT_REG16, PAGEFMT_DBYTE_EN); + } + + nand_chip->select_chip(mtd, 0); +#if defined(MTK_NAND_BMT) + nand_chip->chipsize -= (BMT_POOL_SIZE) << nand_chip->phys_erase_shift; +#endif + mtd->size = nand_chip->chipsize; + + CFG_BLOCKSIZE = mtd->erasesize; + +#if defined(MTK_NAND_BMT) + if (!g_bmt) { + if (!(g_bmt = init_bmt(nand_chip, BMT_POOL_SIZE))) { + MSG(INIT, "Error: init bmt failed\n"); + return 0; + } + } +#endif + + ppdata.of_node = pdev->dev.of_node; + err = mtd_device_parse_register(mtd, probe_types, &ppdata, + NULL, 0); + if (!err) { + MSG(INIT, "[mtk_nand] probe successfully!\n"); + nand_disable_clock(); + shift_on_bbt = 1; + if (load_fact_bbt(mtd) == 0) { + int i; + for (i = 0; i < 0x100; i++) + nand_chip->bbt[i] |= fact_bbt[i]; + } + + return err; + } + +out: + MSG(INIT, "[NFI] mtk_nand_probe fail, err = %d!\n", err); + nand_release(mtd); + platform_set_drvdata(pdev, NULL); + kfree(host); + nand_disable_clock(); + return err; +} + +static int +mtk_nand_remove(struct platform_device *pdev) +{ + struct mtk_nand_host *host = platform_get_drvdata(pdev); + struct mtd_info *mtd = &host->mtd; + + nand_release(mtd); + kfree(host); + nand_disable_clock(); + + return 0; +} + +static const struct of_device_id mt7621_nand_match[] = { + { .compatible = "mtk,mt7621-nand" }, + {}, +}; +MODULE_DEVICE_TABLE(of, mt7621_nand_match); + +static struct platform_driver mtk_nand_driver = { + .probe = mtk_nand_probe, + .remove = mtk_nand_remove, + .driver = { + .name = "MT7621-NAND", + .owner = THIS_MODULE, + .of_match_table = mt7621_nand_match, + }, +}; + +static int __init +mtk_nand_init(void) +{ + printk("MediaTek Nand driver init, version %s\n", VERSION); + + return platform_driver_register(&mtk_nand_driver); +} + +static void __exit +mtk_nand_exit(void) +{ + platform_driver_unregister(&mtk_nand_driver); +} + +module_init(mtk_nand_init); +module_exit(mtk_nand_exit); +MODULE_LICENSE("GPL"); diff --git a/drivers/mtd/nand/mtk_nand.h b/drivers/mtd/nand/mtk_nand.h new file mode 100644 index 0000000..6db88c4 --- /dev/null +++ b/drivers/mtd/nand/mtk_nand.h @@ -0,0 +1,452 @@ +#ifndef __MTK_NAND_H +#define __MTK_NAND_H + +#define RALINK_NAND_CTRL_BASE 0xBE003000 +#define RALINK_SYSCTL_BASE 0xBE000000 +#define RALINK_NANDECC_CTRL_BASE 0xBE003800 +/******************************************************************************* + * NFI Register Definition + *******************************************************************************/ + +#define NFI_CNFG_REG16 ((volatile P_U16)(NFI_BASE+0x0000)) +#define NFI_PAGEFMT_REG16 ((volatile P_U16)(NFI_BASE+0x0004)) +#define NFI_CON_REG16 ((volatile P_U16)(NFI_BASE+0x0008)) +#define NFI_ACCCON_REG32 ((volatile P_U32)(NFI_BASE+0x000C)) +#define NFI_INTR_EN_REG16 ((volatile P_U16)(NFI_BASE+0x0010)) +#define NFI_INTR_REG16 ((volatile P_U16)(NFI_BASE+0x0014)) + +#define NFI_CMD_REG16 ((volatile P_U16)(NFI_BASE+0x0020)) + +#define NFI_ADDRNOB_REG16 ((volatile P_U16)(NFI_BASE+0x0030)) +#define NFI_COLADDR_REG32 ((volatile P_U32)(NFI_BASE+0x0034)) +#define NFI_ROWADDR_REG32 ((volatile P_U32)(NFI_BASE+0x0038)) + +#define NFI_STRDATA_REG16 ((volatile P_U16)(NFI_BASE+0x0040)) + +#define NFI_DATAW_REG32 ((volatile P_U32)(NFI_BASE+0x0050)) +#define NFI_DATAR_REG32 ((volatile P_U32)(NFI_BASE+0x0054)) +#define NFI_PIO_DIRDY_REG16 ((volatile P_U16)(NFI_BASE+0x0058)) + +#define NFI_STA_REG32 ((volatile P_U32)(NFI_BASE+0x0060)) +#define NFI_FIFOSTA_REG16 ((volatile P_U16)(NFI_BASE+0x0064)) +#define NFI_LOCKSTA_REG16 ((volatile P_U16)(NFI_BASE+0x0068)) + +#define NFI_ADDRCNTR_REG16 ((volatile P_U16)(NFI_BASE+0x0070)) + +#define NFI_STRADDR_REG32 ((volatile P_U32)(NFI_BASE+0x0080)) +#define NFI_BYTELEN_REG16 ((volatile P_U16)(NFI_BASE+0x0084)) + +#define NFI_CSEL_REG16 ((volatile P_U16)(NFI_BASE+0x0090)) +#define NFI_IOCON_REG16 ((volatile P_U16)(NFI_BASE+0x0094)) + +#define NFI_FDM0L_REG32 ((volatile P_U32)(NFI_BASE+0x00A0)) +#define NFI_FDM0M_REG32 ((volatile P_U32)(NFI_BASE+0x00A4)) + +#define NFI_LOCK_REG16 ((volatile P_U16)(NFI_BASE+0x0100)) +#define NFI_LOCKCON_REG32 ((volatile P_U32)(NFI_BASE+0x0104)) +#define NFI_LOCKANOB_REG16 ((volatile P_U16)(NFI_BASE+0x0108)) +#define NFI_LOCK00ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0110)) +#define NFI_LOCK00FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0114)) +#define NFI_LOCK01ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0118)) +#define NFI_LOCK01FMT_REG32 ((volatile P_U32)(NFI_BASE+0x011C)) +#define NFI_LOCK02ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0120)) +#define NFI_LOCK02FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0124)) +#define NFI_LOCK03ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0128)) +#define NFI_LOCK03FMT_REG32 ((volatile P_U32)(NFI_BASE+0x012C)) +#define NFI_LOCK04ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0130)) +#define NFI_LOCK04FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0134)) +#define NFI_LOCK05ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0138)) +#define NFI_LOCK05FMT_REG32 ((volatile P_U32)(NFI_BASE+0x013C)) +#define NFI_LOCK06ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0140)) +#define NFI_LOCK06FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0144)) +#define NFI_LOCK07ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0148)) +#define NFI_LOCK07FMT_REG32 ((volatile P_U32)(NFI_BASE+0x014C)) +#define NFI_LOCK08ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0150)) +#define NFI_LOCK08FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0154)) +#define NFI_LOCK09ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0158)) +#define NFI_LOCK09FMT_REG32 ((volatile P_U32)(NFI_BASE+0x015C)) +#define NFI_LOCK10ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0160)) +#define NFI_LOCK10FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0164)) +#define NFI_LOCK11ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0168)) +#define NFI_LOCK11FMT_REG32 ((volatile P_U32)(NFI_BASE+0x016C)) +#define NFI_LOCK12ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0170)) +#define NFI_LOCK12FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0174)) +#define NFI_LOCK13ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0178)) +#define NFI_LOCK13FMT_REG32 ((volatile P_U32)(NFI_BASE+0x017C)) +#define NFI_LOCK14ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0180)) +#define NFI_LOCK14FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0184)) +#define NFI_LOCK15ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0188)) +#define NFI_LOCK15FMT_REG32 ((volatile P_U32)(NFI_BASE+0x018C)) + +#define NFI_FIFODATA0_REG32 ((volatile P_U32)(NFI_BASE+0x0190)) +#define NFI_FIFODATA1_REG32 ((volatile P_U32)(NFI_BASE+0x0194)) +#define NFI_FIFODATA2_REG32 ((volatile P_U32)(NFI_BASE+0x0198)) +#define NFI_FIFODATA3_REG32 ((volatile P_U32)(NFI_BASE+0x019C)) +#define NFI_MASTERSTA_REG16 ((volatile P_U16)(NFI_BASE+0x0210)) + + +/******************************************************************************* + * NFI Register Field Definition + *******************************************************************************/ + +/* NFI_CNFG */ +#define CNFG_AHB (0x0001) +#define CNFG_READ_EN (0x0002) +#define CNFG_DMA_BURST_EN (0x0004) +#define CNFG_BYTE_RW (0x0040) +#define CNFG_HW_ECC_EN (0x0100) +#define CNFG_AUTO_FMT_EN (0x0200) +#define CNFG_OP_IDLE (0x0000) +#define CNFG_OP_READ (0x1000) +#define CNFG_OP_SRD (0x2000) +#define CNFG_OP_PRGM (0x3000) +#define CNFG_OP_ERASE (0x4000) +#define CNFG_OP_RESET (0x5000) +#define CNFG_OP_CUST (0x6000) +#define CNFG_OP_MODE_MASK (0x7000) +#define CNFG_OP_MODE_SHIFT (12) + +/* NFI_PAGEFMT */ +#define PAGEFMT_512 (0x0000) +#define PAGEFMT_2K (0x0001) +#define PAGEFMT_4K (0x0002) + +#define PAGEFMT_PAGE_MASK (0x0003) + +#define PAGEFMT_DBYTE_EN (0x0008) + +#define PAGEFMT_SPARE_16 (0x0000) +#define PAGEFMT_SPARE_26 (0x0001) +#define PAGEFMT_SPARE_27 (0x0002) +#define PAGEFMT_SPARE_28 (0x0003) +#define PAGEFMT_SPARE_MASK (0x0030) +#define PAGEFMT_SPARE_SHIFT (4) + +#define PAGEFMT_FDM_MASK (0x0F00) +#define PAGEFMT_FDM_SHIFT (8) + +#define PAGEFMT_FDM_ECC_MASK (0xF000) +#define PAGEFMT_FDM_ECC_SHIFT (12) + +/* NFI_CON */ +#define CON_FIFO_FLUSH (0x0001) +#define CON_NFI_RST (0x0002) +#define CON_NFI_SRD (0x0010) + +#define CON_NFI_NOB_MASK (0x0060) +#define CON_NFI_NOB_SHIFT (5) + +#define CON_NFI_BRD (0x0100) +#define CON_NFI_BWR (0x0200) + +#define CON_NFI_SEC_MASK (0xF000) +#define CON_NFI_SEC_SHIFT (12) + +/* NFI_ACCCON */ +#define ACCCON_SETTING () + +/* NFI_INTR_EN */ +#define INTR_RD_DONE_EN (0x0001) +#define INTR_WR_DONE_EN (0x0002) +#define INTR_RST_DONE_EN (0x0004) +#define INTR_ERASE_DONE_EN (0x0008) +#define INTR_BSY_RTN_EN (0x0010) +#define INTR_ACC_LOCK_EN (0x0020) +#define INTR_AHB_DONE_EN (0x0040) +#define INTR_ALL_INTR_DE (0x0000) +#define INTR_ALL_INTR_EN (0x007F) + +/* NFI_INTR */ +#define INTR_RD_DONE (0x0001) +#define INTR_WR_DONE (0x0002) +#define INTR_RST_DONE (0x0004) +#define INTR_ERASE_DONE (0x0008) +#define INTR_BSY_RTN (0x0010) +#define INTR_ACC_LOCK (0x0020) +#define INTR_AHB_DONE (0x0040) + +/* NFI_ADDRNOB */ +#define ADDR_COL_NOB_MASK (0x0003) +#define ADDR_COL_NOB_SHIFT (0) +#define ADDR_ROW_NOB_MASK (0x0030) +#define ADDR_ROW_NOB_SHIFT (4) + +/* NFI_STA */ +#define STA_READ_EMPTY (0x00001000) +#define STA_ACC_LOCK (0x00000010) +#define STA_CMD_STATE (0x00000001) +#define STA_ADDR_STATE (0x00000002) +#define STA_DATAR_STATE (0x00000004) +#define STA_DATAW_STATE (0x00000008) + +#define STA_NAND_FSM_MASK (0x1F000000) +#define STA_NAND_BUSY (0x00000100) +#define STA_NAND_BUSY_RETURN (0x00000200) +#define STA_NFI_FSM_MASK (0x000F0000) +#define STA_NFI_OP_MASK (0x0000000F) + +/* NFI_FIFOSTA */ +#define FIFO_RD_EMPTY (0x0040) +#define FIFO_RD_FULL (0x0080) +#define FIFO_WR_FULL (0x8000) +#define FIFO_WR_EMPTY (0x4000) +#define FIFO_RD_REMAIN(x) (0x1F&(x)) +#define FIFO_WR_REMAIN(x) ((0x1F00&(x))>>8) + +/* NFI_ADDRCNTR */ +#define ADDRCNTR_CNTR(x) ((0xF000&(x))>>12) +#define ADDRCNTR_OFFSET(x) (0x03FF&(x)) + +/* NFI_LOCK */ +#define NFI_LOCK_ON (0x0001) + +/* NFI_LOCKANOB */ +#define PROG_RADD_NOB_MASK (0x7000) +#define PROG_RADD_NOB_SHIFT (12) +#define PROG_CADD_NOB_MASK (0x0300) +#define PROG_CADD_NOB_SHIFT (8) +#define ERASE_RADD_NOB_MASK (0x0070) +#define ERASE_RADD_NOB_SHIFT (4) +#define ERASE_CADD_NOB_MASK (0x0007) +#define ERASE_CADD_NOB_SHIFT (0) + +/******************************************************************************* + * ECC Register Definition + *******************************************************************************/ + +#define ECC_ENCCON_REG16 ((volatile P_U16)(NFIECC_BASE+0x0000)) +#define ECC_ENCCNFG_REG32 ((volatile P_U32)(NFIECC_BASE+0x0004)) +#define ECC_ENCDIADDR_REG32 ((volatile P_U32)(NFIECC_BASE+0x0008)) +#define ECC_ENCIDLE_REG32 ((volatile P_U32)(NFIECC_BASE+0x000C)) +#define ECC_ENCPAR0_REG32 ((volatile P_U32)(NFIECC_BASE+0x0010)) +#define ECC_ENCPAR1_REG32 ((volatile P_U32)(NFIECC_BASE+0x0014)) +#define ECC_ENCPAR2_REG32 ((volatile P_U32)(NFIECC_BASE+0x0018)) +#define ECC_ENCPAR3_REG32 ((volatile P_U32)(NFIECC_BASE+0x001C)) +#define ECC_ENCPAR4_REG32 ((volatile P_U32)(NFIECC_BASE+0x0020)) +#define ECC_ENCSTA_REG32 ((volatile P_U32)(NFIECC_BASE+0x0024)) +#define ECC_ENCIRQEN_REG16 ((volatile P_U16)(NFIECC_BASE+0x0028)) +#define ECC_ENCIRQSTA_REG16 ((volatile P_U16)(NFIECC_BASE+0x002C)) + +#define ECC_DECCON_REG16 ((volatile P_U16)(NFIECC_BASE+0x0100)) +#define ECC_DECCNFG_REG32 ((volatile P_U32)(NFIECC_BASE+0x0104)) +#define ECC_DECDIADDR_REG32 ((volatile P_U32)(NFIECC_BASE+0x0108)) +#define ECC_DECIDLE_REG16 ((volatile P_U16)(NFIECC_BASE+0x010C)) +#define ECC_DECFER_REG16 ((volatile P_U16)(NFIECC_BASE+0x0110)) +#define ECC_DECENUM_REG32 ((volatile P_U32)(NFIECC_BASE+0x0114)) +#define ECC_DECDONE_REG16 ((volatile P_U16)(NFIECC_BASE+0x0118)) +#define ECC_DECEL0_REG32 ((volatile P_U32)(NFIECC_BASE+0x011C)) +#define ECC_DECEL1_REG32 ((volatile P_U32)(NFIECC_BASE+0x0120)) +#define ECC_DECEL2_REG32 ((volatile P_U32)(NFIECC_BASE+0x0124)) +#define ECC_DECEL3_REG32 ((volatile P_U32)(NFIECC_BASE+0x0128)) +#define ECC_DECEL4_REG32 ((volatile P_U32)(NFIECC_BASE+0x012C)) +#define ECC_DECEL5_REG32 ((volatile P_U32)(NFIECC_BASE+0x0130)) +#define ECC_DECIRQEN_REG16 ((volatile P_U16)(NFIECC_BASE+0x0134)) +#define ECC_DECIRQSTA_REG16 ((volatile P_U16)(NFIECC_BASE+0x0138)) +#define ECC_FDMADDR_REG32 ((volatile P_U32)(NFIECC_BASE+0x013C)) +#define ECC_DECFSM_REG32 ((volatile P_U32)(NFIECC_BASE+0x0140)) +#define ECC_SYNSTA_REG32 ((volatile P_U32)(NFIECC_BASE+0x0144)) +#define ECC_DECNFIDI_REG32 ((volatile P_U32)(NFIECC_BASE+0x0148)) +#define ECC_SYN0_REG32 ((volatile P_U32)(NFIECC_BASE+0x014C)) + +/******************************************************************************* + * ECC register definition + *******************************************************************************/ +/* ECC_ENCON */ +#define ENC_EN (0x0001) +#define ENC_DE (0x0000) + +/* ECC_ENCCNFG */ +#define ECC_CNFG_ECC4 (0x0000) +#define ECC_CNFG_ECC6 (0x0001) +#define ECC_CNFG_ECC8 (0x0002) +#define ECC_CNFG_ECC10 (0x0003) +#define ECC_CNFG_ECC12 (0x0004) +#define ECC_CNFG_ECC_MASK (0x00000007) + +#define ENC_CNFG_NFI (0x0010) +#define ENC_CNFG_MODE_MASK (0x0010) + +#define ENC_CNFG_META6 (0x10300000) +#define ENC_CNFG_META8 (0x10400000) + +#define ENC_CNFG_MSG_MASK (0x1FFF0000) +#define ENC_CNFG_MSG_SHIFT (0x10) + +/* ECC_ENCIDLE */ +#define ENC_IDLE (0x0001) + +/* ECC_ENCSTA */ +#define STA_FSM (0x001F) +#define STA_COUNT_PS (0xFF10) +#define STA_COUNT_MS (0x3FFF0000) + +/* ECC_ENCIRQEN */ +#define ENC_IRQEN (0x0001) + +/* ECC_ENCIRQSTA */ +#define ENC_IRQSTA (0x0001) + +/* ECC_DECCON */ +#define DEC_EN (0x0001) +#define DEC_DE (0x0000) + +/* ECC_ENCCNFG */ +#define DEC_CNFG_ECC4 (0x0000) +//#define DEC_CNFG_ECC6 (0x0001) +//#define DEC_CNFG_ECC12 (0x0002) +#define DEC_CNFG_NFI (0x0010) +//#define DEC_CNFG_META6 (0x10300000) +//#define DEC_CNFG_META8 (0x10400000) + +#define DEC_CNFG_FER (0x01000) +#define DEC_CNFG_EL (0x02000) +#define DEC_CNFG_CORRECT (0x03000) +#define DEC_CNFG_TYPE_MASK (0x03000) + +#define DEC_CNFG_EMPTY_EN (0x80000000) + +#define DEC_CNFG_CODE_MASK (0x1FFF0000) +#define DEC_CNFG_CODE_SHIFT (0x10) + +/* ECC_DECIDLE */ +#define DEC_IDLE (0x0001) + +/* ECC_DECFER */ +#define DEC_FER0 (0x0001) +#define DEC_FER1 (0x0002) +#define DEC_FER2 (0x0004) +#define DEC_FER3 (0x0008) +#define DEC_FER4 (0x0010) +#define DEC_FER5 (0x0020) +#define DEC_FER6 (0x0040) +#define DEC_FER7 (0x0080) + +/* ECC_DECENUM */ +#define ERR_NUM0 (0x0000000F) +#define ERR_NUM1 (0x000000F0) +#define ERR_NUM2 (0x00000F00) +#define ERR_NUM3 (0x0000F000) +#define ERR_NUM4 (0x000F0000) +#define ERR_NUM5 (0x00F00000) +#define ERR_NUM6 (0x0F000000) +#define ERR_NUM7 (0xF0000000) + +/* ECC_DECDONE */ +#define DEC_DONE0 (0x0001) +#define DEC_DONE1 (0x0002) +#define DEC_DONE2 (0x0004) +#define DEC_DONE3 (0x0008) +#define DEC_DONE4 (0x0010) +#define DEC_DONE5 (0x0020) +#define DEC_DONE6 (0x0040) +#define DEC_DONE7 (0x0080) + +/* ECC_DECIRQEN */ +#define DEC_IRQEN (0x0001) + +/* ECC_DECIRQSTA */ +#define DEC_IRQSTA (0x0001) + +#define CHIPVER_ECO_1 (0x8a00) +#define CHIPVER_ECO_2 (0x8a01) + +//#define NAND_PFM + +/******************************************************************************* + * Data Structure Definition + *******************************************************************************/ +struct mtk_nand_host +{ + struct nand_chip nand_chip; + struct mtd_info mtd; + struct mtk_nand_host_hw *hw; +}; + +struct NAND_CMD +{ + u32 u4ColAddr; + u32 u4RowAddr; + u32 u4OOBRowAddr; + u8 au1OOB[288]; + u8* pDataBuf; +#ifdef NAND_PFM + u32 pureReadOOB; + u32 pureReadOOBNum; +#endif +}; + +/* + * ECC layout control structure. Exported to userspace for + * diagnosis and to allow creation of raw images +struct nand_ecclayout { + uint32_t eccbytes; + uint32_t eccpos[64]; + uint32_t oobavail; + struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES]; +}; +*/ +#define __DEBUG_NAND 1 /* Debug information on/off */ + +/* Debug message event */ +#define DBG_EVT_NONE 0x00000000 /* No event */ +#define DBG_EVT_INIT 0x00000001 /* Initial related event */ +#define DBG_EVT_VERIFY 0x00000002 /* Verify buffer related event */ +#define DBG_EVT_PERFORMANCE 0x00000004 /* Performance related event */ +#define DBG_EVT_READ 0x00000008 /* Read related event */ +#define DBG_EVT_WRITE 0x00000010 /* Write related event */ +#define DBG_EVT_ERASE 0x00000020 /* Erase related event */ +#define DBG_EVT_BADBLOCK 0x00000040 /* Badblock related event */ +#define DBG_EVT_POWERCTL 0x00000080 /* Suspend/Resume related event */ + +#define DBG_EVT_ALL 0xffffffff + +#define DBG_EVT_MASK (DBG_EVT_INIT) + +#if __DEBUG_NAND +#define MSG(evt, fmt, args...) \ +do { \ + if ((DBG_EVT_##evt) & DBG_EVT_MASK) { \ + printk(fmt, ##args); \ + } \ +} while(0) + +#define MSG_FUNC_ENTRY(f) MSG(FUC, ": %s\n", __FUNCTION__) +#else +#define MSG(evt, fmt, args...) do{}while(0) +#define MSG_FUNC_ENTRY(f) do{}while(0) +#endif + +#define RAMDOM_READ 1<<0 +#define CACHE_READ 1<<1 + +typedef struct +{ + u16 id; //deviceid+menuid + u32 ext_id; + u8 addr_cycle; + u8 iowidth; + u16 totalsize; + u16 blocksize; + u16 pagesize; + u16 sparesize; + u32 timmingsetting; + char devciename[14]; + u32 advancedmode; // +}flashdev_info,*pflashdev_info; + +/* NAND driver */ +#if 0 +struct mtk_nand_host_hw { + unsigned int nfi_bus_width; /* NFI_BUS_WIDTH */ + unsigned int nfi_access_timing; /* NFI_ACCESS_TIMING */ + unsigned int nfi_cs_num; /* NFI_CS_NUM */ + unsigned int nand_sec_size; /* NAND_SECTOR_SIZE */ + unsigned int nand_sec_shift; /* NAND_SECTOR_SHIFT */ + unsigned int nand_ecc_size; + unsigned int nand_ecc_bytes; + unsigned int nand_ecc_mode; +}; +extern struct mtk_nand_host_hw mt7621_nand_hw; +extern u32 CFG_BLOCKSIZE; +#endif +#endif diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 9715a7b..86e2a12 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -92,7 +92,7 @@ static struct nand_ecclayout nand_oob_128 = { .length = 78} } }; -static int nand_get_device(struct mtd_info *mtd, int new_state); +int nand_get_device(struct mtd_info *mtd, int new_state); static int nand_do_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops); @@ -130,7 +130,7 @@ static int check_offs_len(struct mtd_info *mtd, * * Release chip lock and wake up anyone waiting on the device. */ -static void nand_release_device(struct mtd_info *mtd) +void nand_release_device(struct mtd_info *mtd) { struct nand_chip *chip = mtd->priv; @@ -783,7 +783,7 @@ static void panic_nand_get_device(struct nand_chip *chip, * * Get the device and lock it for exclusive access */ -static int +int nand_get_device(struct mtd_info *mtd, int new_state) { struct nand_chip *chip = mtd->priv; diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index c0615d1..b34cb41 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -1360,4 +1360,23 @@ int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs) return ret; } +void nand_bbt_set(struct mtd_info *mtd, int page, int flag) +{ + struct nand_chip *this = mtd->priv; + int block; + + block = (int)(page >> (this->bbt_erase_shift - this->page_shift - 1)); + this->bbt[block >> 3] &= ~(0x03 << (block & 0x6)); + this->bbt[block >> 3] |= (flag & 0x3) << (block & 0x6); +} + +int nand_bbt_get(struct mtd_info *mtd, int page) +{ + struct nand_chip *this = mtd->priv; + int block; + + block = (int)(page >> (this->bbt_erase_shift - this->page_shift - 1)); + return (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; +} + EXPORT_SYMBOL(nand_scan_bbt); diff --git a/drivers/mtd/nand/nand_def.h b/drivers/mtd/nand/nand_def.h new file mode 100644 index 0000000..82e957d --- /dev/null +++ b/drivers/mtd/nand/nand_def.h @@ -0,0 +1,123 @@ +#ifndef __NAND_DEF_H__ +#define __NAND_DEF_H__ + +#define VERSION "v2.1 Fix AHB virt2phys error" +#define MODULE_NAME "# MTK NAND #" +#define PROCNAME "driver/nand" + +#undef TESTTIME +//#define __UBOOT_NAND__ 1 +#define __KERNEL_NAND__ 1 +//#define __PRELOADER_NAND__ 1 +//#define PMT 1 +//#define _MTK_NAND_DUMMY_DRIVER +//#define CONFIG_BADBLOCK_CHECK 1 +//#ifdef CONFIG_BADBLOCK_CHECK +//#define MTK_NAND_BMT 1 +//#endif +#define ECC_ENABLE 1 +#define MANUAL_CORRECT 1 +//#define __INTERNAL_USE_AHB_MODE__ (0) +#define SKIP_BAD_BLOCK +#define FACT_BBT + +#ifndef NAND_OTP_SUPPORT +#define NAND_OTP_SUPPORT 0 +#endif + +/******************************************************************************* + * Macro definition + *******************************************************************************/ +//#define NFI_SET_REG32(reg, value) (DRV_WriteReg32(reg, DRV_Reg32(reg) | (value))) +//#define NFI_SET_REG16(reg, value) (DRV_WriteReg16(reg, DRV_Reg16(reg) | (value))) +//#define NFI_CLN_REG32(reg, value) (DRV_WriteReg32(reg, DRV_Reg32(reg) & (~(value)))) +//#define NFI_CLN_REG16(reg, value) (DRV_WriteReg16(reg, DRV_Reg16(reg) & (~(value)))) + +#if defined (__KERNEL_NAND__) +#define NFI_SET_REG32(reg, value) \ +do { \ + g_value = (DRV_Reg32(reg) | (value));\ + DRV_WriteReg32(reg, g_value); \ +} while(0) + +#define NFI_SET_REG16(reg, value) \ +do { \ + g_value = (DRV_Reg16(reg) | (value));\ + DRV_WriteReg16(reg, g_value); \ +} while(0) + +#define NFI_CLN_REG32(reg, value) \ +do { \ + g_value = (DRV_Reg32(reg) & (~(value)));\ + DRV_WriteReg32(reg, g_value); \ +} while(0) + +#define NFI_CLN_REG16(reg, value) \ +do { \ + g_value = (DRV_Reg16(reg) & (~(value)));\ + DRV_WriteReg16(reg, g_value); \ +} while(0) +#endif + +#define NFI_WAIT_STATE_DONE(state) do{;}while (__raw_readl(NFI_STA_REG32) & state) +#define NFI_WAIT_TO_READY() do{;}while (!(__raw_readl(NFI_STA_REG32) & STA_BUSY2READY)) + + +#define NAND_SECTOR_SIZE (512) +#define OOB_PER_SECTOR (16) +#define OOB_AVAI_PER_SECTOR (8) + +#ifndef PART_SIZE_BMTPOOL +#define BMT_POOL_SIZE (80) +#else +#define BMT_POOL_SIZE (PART_SIZE_BMTPOOL) +#endif + +#define PMT_POOL_SIZE (2) + +#define TIMEOUT_1 0x1fff +#define TIMEOUT_2 0x8ff +#define TIMEOUT_3 0xffff +#define TIMEOUT_4 0xffff//5000 //PIO + + +/* temporarity definiation */ +#if !defined (__KERNEL_NAND__) +#define KERN_INFO +#define KERN_WARNING +#define KERN_ERR +#define PAGE_SIZE (4096) +#endif +#define AddStorageTrace //AddStorageTrace +#define STORAGE_LOGGER_MSG_NAND 0 +#define NFI_BASE RALINK_NAND_CTRL_BASE +#define NFIECC_BASE RALINK_NANDECC_CTRL_BASE + +#ifdef __INTERNAL_USE_AHB_MODE__ +#define MT65xx_POLARITY_LOW 0 +#define MT65XX_PDN_PERI_NFI 0 +#define MT65xx_EDGE_SENSITIVE 0 +#define MT6575_NFI_IRQ_ID (58) +#endif + +#if defined (__KERNEL_NAND__) +#define RALINK_REG(x) (*((volatile u32 *)(x))) +#define __virt_to_phys(x) virt_to_phys((volatile void*)x) +#else +#define CONFIG_MTD_NAND_VERIFY_WRITE (1) +#define printk printf +#define ra_dbg printf +#define BUG() //BUG() +#define BUG_ON(x) //BUG_ON() +#define NUM_PARTITIONS 1 +#endif + +#define NFI_DEFAULT_ACCESS_TIMING (0x30C77fff) //(0x44333) + +//uboot only support 1 cs +#define NFI_CS_NUM (1) +#define NFI_DEFAULT_CS (0) + +#include "mt6575_typedefs.h" + +#endif /* __NAND_DEF_H__ */ diff --git a/drivers/mtd/nand/nand_device_list.h b/drivers/mtd/nand/nand_device_list.h new file mode 100644 index 0000000..4c36b3a --- /dev/null +++ b/drivers/mtd/nand/nand_device_list.h @@ -0,0 +1,55 @@ +/* Copyright Statement: + * + * This software/firmware and related documentation ("MediaTek Software") are + * protected under relevant copyright laws. The information contained herein + * is confidential and proprietary to MediaTek Inc. and/or its licensors. + * Without the prior written permission of MediaTek inc. and/or its licensors, + * any reproduction, modification, use or disclosure of MediaTek Software, + * and information contained herein, in whole or in part, shall be strictly prohibited. + */ +/* MediaTek Inc. (C) 2010. All rights reserved. + * + * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES + * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") + * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON + * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. + * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE + * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR + * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH + * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES + * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES + * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK + * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR + * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND + * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, + * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, + * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO + * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. + * + * The following software/firmware and/or related documentation ("MediaTek Software") + * have been modified by MediaTek Inc. All revisions are subject to any receiver's + * applicable license agreements with MediaTek Inc. + */ + +#ifndef __NAND_DEVICE_LIST_H__ +#define __NAND_DEVICE_LIST_H__ + +static const flashdev_info gen_FlashTable[]={ + {0x20BC, 0x105554, 5, 16, 512, 128, 2048, 64, 0x1123, "EHD013151MA_5", 0}, + {0xECBC, 0x005554, 5, 16, 512, 128, 2048, 64, 0x1123, "K524G2GACB_A0", 0}, + {0x2CBC, 0x905556, 5, 16, 512, 128, 2048, 64, 0x21044333, "MT29C4G96MAZA", 0}, + {0xADBC, 0x905554, 5, 16, 512, 128, 2048, 64, 0x10801011, "H9DA4GH4JJAMC", 0}, + {0x01F1, 0x801D01, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "S34ML01G100TF", 0}, + {0x92F1, 0x8095FF, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "F59L1G81A", 0}, + {0xECD3, 0x519558, 5, 8, 1024, 128, 2048, 64, 0x44333, "K9K8G8000", 0}, + {0xC2F1, 0x801DC2, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "MX30LF1G08AA", 0}, + {0x98D3, 0x902676, 5, 8, 1024, 256, 4096, 224, 0x00C25332, "TC58NVG3S0F", 0}, + {0x01DA, 0x909546, 5, 8, 256, 128, 2048, 128, 0x30C77fff, "S34ML02G200TF", 0}, + {0x01DC, 0x909556, 5, 8, 512, 128, 2048, 128, 0x30C77fff, "S34ML04G200TF", 0}, + {0x0000, 0x000000, 0, 0, 0, 0, 0, 0, 0, "xxxxxxxxxx", 0}, +}; + + +#endif diff --git a/drivers/mtd/nand/partition.h b/drivers/mtd/nand/partition.h new file mode 100644 index 0000000..034e1af --- /dev/null +++ b/drivers/mtd/nand/partition.h @@ -0,0 +1,115 @@ +/* Copyright Statement: + * + * This software/firmware and related documentation ("MediaTek Software") are + * protected under relevant copyright laws. The information contained herein + * is confidential and proprietary to MediaTek Inc. and/or its licensors. + * Without the prior written permission of MediaTek inc. and/or its licensors, + * any reproduction, modification, use or disclosure of MediaTek Software, + * and information contained herein, in whole or in part, shall be strictly prohibited. + */ +/* MediaTek Inc. (C) 2010. All rights reserved. + * + * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES + * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") + * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON + * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. + * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE + * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR + * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH + * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES + * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES + * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK + * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR + * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND + * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, + * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, + * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO + * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. + * + * The following software/firmware and/or related documentation ("MediaTek Software") + * have been modified by MediaTek Inc. All revisions are subject to any receiver's + * applicable license agreements with MediaTek Inc. + */ + +#include +#include +#include + +#define RECONFIG_PARTITION_SIZE 1 + +#define MTD_BOOT_PART_SIZE 0x80000 +#define MTD_CONFIG_PART_SIZE 0x20000 +#define MTD_FACTORY_PART_SIZE 0x20000 + +extern unsigned int CFG_BLOCKSIZE; +#define LARGE_MTD_BOOT_PART_SIZE (CFG_BLOCKSIZE<<2) +#define LARGE_MTD_CONFIG_PART_SIZE (CFG_BLOCKSIZE<<2) +#define LARGE_MTD_FACTORY_PART_SIZE (CFG_BLOCKSIZE<<1) + +/*=======================================================================*/ +/* NAND PARTITION Mapping */ +/*=======================================================================*/ +//#ifdef CONFIG_MTD_PARTITIONS +static struct mtd_partition g_pasStatic_Partition[] = { + { + name: "ALL", + size: MTDPART_SIZ_FULL, + offset: 0, + }, + /* Put your own partition definitions here */ + { + name: "Bootloader", + size: MTD_BOOT_PART_SIZE, + offset: 0, + }, { + name: "Config", + size: MTD_CONFIG_PART_SIZE, + offset: MTDPART_OFS_APPEND + }, { + name: "Factory", + size: MTD_FACTORY_PART_SIZE, + offset: MTDPART_OFS_APPEND +#ifdef CONFIG_RT2880_ROOTFS_IN_FLASH + }, { + name: "Kernel", + size: MTD_KERN_PART_SIZE, + offset: MTDPART_OFS_APPEND, + }, { + name: "RootFS", + size: MTD_ROOTFS_PART_SIZE, + offset: MTDPART_OFS_APPEND, +#ifdef CONFIG_ROOTFS_IN_FLASH_NO_PADDING + }, { + name: "Kernel_RootFS", + size: MTD_KERN_PART_SIZE + MTD_ROOTFS_PART_SIZE, + offset: MTD_BOOT_PART_SIZE + MTD_CONFIG_PART_SIZE + MTD_FACTORY_PART_SIZE, +#endif +#else //CONFIG_RT2880_ROOTFS_IN_RAM + }, { + name: "Kernel", + size: 0x10000, + offset: MTDPART_OFS_APPEND, +#endif +#ifdef CONFIG_DUAL_IMAGE + }, { + name: "Kernel2", + size: MTD_KERN2_PART_SIZE, + offset: MTD_KERN2_PART_OFFSET, +#ifdef CONFIG_RT2880_ROOTFS_IN_FLASH + }, { + name: "RootFS2", + size: MTD_ROOTFS2_PART_SIZE, + offset: MTD_ROOTFS2_PART_OFFSET, +#endif +#endif + } + +}; + +#define NUM_PARTITIONS ARRAY_SIZE(g_pasStatic_Partition) +extern int part_num; // = NUM_PARTITIONS; +//#endif +#undef RECONFIG_PARTITION_SIZE + -- 1.7.10.4