diff options
Diffstat (limited to 'target/linux/brcm-2.4/patches/004-flash-map.patch')
| -rw-r--r-- | target/linux/brcm-2.4/patches/004-flash-map.patch | 401 |
1 files changed, 401 insertions, 0 deletions
diff --git a/target/linux/brcm-2.4/patches/004-flash-map.patch b/target/linux/brcm-2.4/patches/004-flash-map.patch new file mode 100644 index 0000000000..06c106bdf0 --- /dev/null +++ b/target/linux/brcm-2.4/patches/004-flash-map.patch @@ -0,0 +1,401 @@ +diff -Nur linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c linux-2.4.32-flash/drivers/mtd/maps/bcm947xx-flash.c +--- linux-2.4.32/drivers/mtd/maps/bcm947xx-flash.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.4.32-flash/drivers/mtd/maps/bcm947xx-flash.c 2005-12-19 01:29:52.464670750 +0100 +@@ -0,0 +1,366 @@ ++/* ++ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) ++ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org> ++ * ++ * original functions for finding root filesystem from Mike Baker ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License as published by the ++ * Free Software Foundation; either version 2 of the License, or (at your ++ * option) any later version. ++ * ++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED ++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF ++ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN ++ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ++ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ++ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF ++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ++ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ++ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ++ * ++ * You should have received a copy of the GNU General Public License along ++ * with this program; if not, write to the Free Software Foundation, Inc., ++ * 675 Mass Ave, Cambridge, MA 02139, USA. ++ * ++ * ++ * Copyright 2004, Broadcom Corporation ++ * All Rights Reserved. ++ * ++ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY ++ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM ++ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS ++ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. ++ * ++ * Flash mapping for BCM947XX boards ++ * ++ */ ++ ++#include <linux/module.h> ++#include <linux/types.h> ++#include <linux/kernel.h> ++#include <asm/io.h> ++#include <linux/mtd/mtd.h> ++#include <linux/mtd/map.h> ++#ifdef CONFIG_MTD_PARTITIONS ++#include <linux/mtd/partitions.h> ++#endif ++#include <linux/config.h> ++ ++#include <trxhdr.h> ++ ++#define WINDOW_ADDR 0x1c000000 ++#define WINDOW_SIZE (0x400000*2) ++#define BUSWIDTH 2 ++ ++static struct mtd_info *bcm947xx_mtd; ++ ++__u8 bcm947xx_map_read8(struct map_info *map, unsigned long ofs) ++{ ++ if (map->map_priv_2 == 1) ++ return __raw_readb(map->map_priv_1 + ofs); ++ ++ u16 val = __raw_readw(map->map_priv_1 + (ofs & ~1)); ++ if (ofs & 1) ++ return ((val >> 8) & 0xff); ++ else ++ return (val & 0xff); ++} ++ ++__u16 bcm947xx_map_read16(struct map_info *map, unsigned long ofs) ++{ ++ return __raw_readw(map->map_priv_1 + ofs); ++} ++ ++__u32 bcm947xx_map_read32(struct map_info *map, unsigned long ofs) ++{ ++ return __raw_readl(map->map_priv_1 + ofs); ++} ++ ++void bcm947xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) ++{ ++ if (len==1) { ++ memcpy_fromio(to, map->map_priv_1 + from, len); ++ } else { ++ int i; ++ u16 *dest = (u16 *) to; ++ u16 *src = (u16 *) (map->map_priv_1 + from); ++ for (i = 0; i < (len / 2); i++) { ++ dest[i] = src[i]; ++ } ++ if (len & 1) ++ *((u8 *)dest+len-1) = src[i] & 0xff; ++ } ++} ++ ++void bcm947xx_map_write8(struct map_info *map, __u8 d, unsigned long adr) ++{ ++ __raw_writeb(d, map->map_priv_1 + adr); ++ mb(); ++} ++ ++void bcm947xx_map_write16(struct map_info *map, __u16 d, unsigned long adr) ++{ ++ __raw_writew(d, map->map_priv_1 + adr); ++ mb(); ++} ++ ++void bcm947xx_map_write32(struct map_info *map, __u32 d, unsigned long adr) ++{ ++ __raw_writel(d, map->map_priv_1 + adr); ++ mb(); ++} ++ ++void bcm947xx_map_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) ++{ ++ memcpy_toio(map->map_priv_1 + to, from, len); ++} ++ ++struct map_info bcm947xx_map = { ++ name: "Physically mapped flash", ++ size: WINDOW_SIZE, ++ buswidth: BUSWIDTH, ++ read8: bcm947xx_map_read8, ++ read16: bcm947xx_map_read16, ++ read32: bcm947xx_map_read32, ++ copy_from: bcm947xx_map_copy_from, ++ write8: bcm947xx_map_write8, ++ write16: bcm947xx_map_write16, ++ write32: bcm947xx_map_write32, ++ copy_to: bcm947xx_map_copy_to ++}; ++ ++#ifdef CONFIG_MTD_PARTITIONS ++ ++static struct mtd_partition bcm947xx_parts[] = { ++ { name: "cfe", offset: 0, size: 0, mask_flags: MTD_WRITEABLE, }, ++ { name: "linux", offset: 0, size: 0, }, ++ { name: "rootfs", offset: 0, size: 0, }, ++ { name: "nvram", offset: 0, size: 0, }, ++ { name: "OpenWrt", offset: 0, size: 0, }, ++ { name: NULL, }, ++}; ++ ++static int __init ++find_cfe_size(struct mtd_info *mtd, size_t size) ++{ ++ struct trx_header *trx; ++ unsigned char buf[512]; ++ int off; ++ size_t len; ++ int cfe_size_flag; ++ ++ trx = (struct trx_header *) buf; ++ ++ cfe_size_flag=0; ++ ++ for (off = (256*1024); off < size; off += mtd->erasesize) { ++ memset(buf, 0xe5, sizeof(buf)); ++ ++ /* ++ * Read into buffer ++ */ ++ if (MTD_READ(mtd, off, sizeof(buf), &len, buf) || ++ len != sizeof(buf)) ++ continue; ++ ++ /* found a TRX header */ ++ if (le32_to_cpu(trx->magic) == TRX_MAGIC) { ++ goto done; ++ } ++ cfe_size_flag += 1; ++ } ++ ++ printk(KERN_NOTICE ++ "%s: Couldn't find bootloader size\n", ++ mtd->name); ++ return -1; ++ ++ done: ++ printk(KERN_NOTICE "bootloader size flag: %d\n", cfe_size_flag); ++ return cfe_size_flag; ++ ++} ++ ++static int __init ++find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part) ++{ ++ struct trx_header *trx; ++ unsigned char buf[512]; ++ int off; ++ size_t len; ++ ++ trx = (struct trx_header *) buf; ++ ++ for (off = (256*1024); off < size; off += mtd->erasesize) { ++ memset(buf, 0xe5, sizeof(buf)); ++ ++ /* ++ * Read into buffer ++ */ ++ if (MTD_READ(mtd, off, sizeof(buf), &len, buf) || ++ len != sizeof(buf)) ++ continue; ++ ++ /* found a TRX header */ ++ if (le32_to_cpu(trx->magic) == TRX_MAGIC) { ++ part->offset = le32_to_cpu(trx->offsets[2]) ? : ++ le32_to_cpu(trx->offsets[1]); ++ part->size = le32_to_cpu(trx->len); ++ ++ part->size -= part->offset; ++ part->offset += off; ++ ++ goto done; ++ } ++ } ++ ++ printk(KERN_NOTICE ++ "%s: Couldn't find root filesystem\n", ++ mtd->name); ++ return -1; ++ ++ done: ++ return part->size; ++} ++ ++struct mtd_partition * __init ++init_mtd_partitions(struct mtd_info *mtd, size_t size) ++{ ++ ++ int cfe_size_flag; ++ ++ /* if cfe_size_flag=0, cfe size is 256 kb, else 384 kb */ ++ cfe_size_flag = find_cfe_size(mtd,size); ++ ++ /* boot loader */ ++ bcm947xx_parts[0].offset = 0; ++ if (cfe_size_flag == 0) { ++ bcm947xx_parts[0].size = 1024*256; ++ } else { ++ /* netgear wgt634u has 384 kb bootloader */ ++ bcm947xx_parts[0].size = 1024*384; ++ } ++ ++ /* nvram */ ++ if (cfe_size_flag == 0) { ++ bcm947xx_parts[3].offset = size - mtd->erasesize; ++ } else { ++ /* nvram (old 128kb config partition on netgear wgt634u) */ ++ bcm947xx_parts[3].offset = bcm947xx_parts[0].size; ++ } ++ bcm947xx_parts[3].size = mtd->erasesize; ++ ++ /* linux (kernel and rootfs) */ ++ if (cfe_size_flag == 0) { ++ bcm947xx_parts[1].offset = bcm947xx_parts[0].size; ++ bcm947xx_parts[1].size = bcm947xx_parts[3].offset - ++ bcm947xx_parts[1].offset; ++ } else { ++ /* do not count the elf loader, which is on one block */ ++ bcm947xx_parts[1].offset = bcm947xx_parts[0].size + ++ bcm947xx_parts[3].size + mtd->erasesize; ++ bcm947xx_parts[1].size = size - ++ bcm947xx_parts[0].size - ++ (2*bcm947xx_parts[3].size) - ++ mtd->erasesize; ++ } ++ ++ /* find and size rootfs */ ++ if (find_root(mtd,size,&bcm947xx_parts[2])==0) { ++ /* entirely jffs2 */ ++ bcm947xx_parts[4].name = NULL; ++ bcm947xx_parts[2].size = size - bcm947xx_parts[2].offset - ++ bcm947xx_parts[3].size; ++ } else { ++ /* legacy setup */ ++ /* calculate leftover flash, and assign it to the jffs2 partition */ ++ if (cfe_size_flag == 0) { ++ bcm947xx_parts[4].offset = bcm947xx_parts[2].offset + ++ bcm947xx_parts[2].size; ++ if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) { ++ bcm947xx_parts[4].offset += mtd->erasesize - ++ (bcm947xx_parts[4].offset % mtd->erasesize); ++ } ++ bcm947xx_parts[4].size = bcm947xx_parts[3].offset - ++ bcm947xx_parts[4].offset; ++ } else { ++ bcm947xx_parts[4].offset = bcm947xx_parts[2].offset + ++ bcm947xx_parts[2].size; ++ if ((bcm947xx_parts[4].offset % mtd->erasesize) > 0) { ++ bcm947xx_parts[4].offset += mtd->erasesize - ++ (bcm947xx_parts[4].offset % mtd->erasesize); ++ } ++ bcm947xx_parts[4].size = size - bcm947xx_parts[3].size - ++ bcm947xx_parts[4].offset; ++ } ++ } ++ ++ return bcm947xx_parts; ++} ++ ++#endif ++ ++ ++mod_init_t init_bcm947xx_map(void) ++{ ++ size_t size; ++ int ret = 0; ++#ifdef CONFIG_MTD_PARTITIONS ++ struct mtd_partition *parts; ++ int i; ++#endif ++ ++ bcm947xx_map.map_priv_1 = (unsigned long) ioremap(WINDOW_ADDR, WINDOW_SIZE); ++ ++ if (!bcm947xx_map.map_priv_1) { ++ printk(KERN_ERR "Failed to ioremap\n"); ++ return -EIO; ++ } ++ ++ if (!(bcm947xx_mtd = do_map_probe("cfi_probe", &bcm947xx_map))) { ++ printk(KERN_ERR "pflash: cfi_probe failed\n"); ++ iounmap((void *)bcm947xx_map.map_priv_1); ++ return -ENXIO; ++ } ++ ++ bcm947xx_mtd->module = THIS_MODULE; ++ ++ size = bcm947xx_mtd->size; ++ ++ printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR); ++ ++#ifdef CONFIG_MTD_PARTITIONS ++ parts = init_mtd_partitions(bcm947xx_mtd, size); ++ for (i = 0; parts[i].name; i++); ++ ret = add_mtd_partitions(bcm947xx_mtd, parts, i); ++ if (ret) { ++ printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); ++ goto fail; ++ } ++#endif ++ ++ return 0; ++ ++ fail: ++ if (bcm947xx_mtd) ++ map_destroy(bcm947xx_mtd); ++ if (bcm947xx_map.map_priv_1) ++ iounmap((void *) bcm947xx_map.map_priv_1); ++ bcm947xx_map.map_priv_1 = 0; ++ return ret; ++} ++ ++mod_exit_t cleanup_bcm947xx_map(void) ++{ ++#ifdef CONFIG_MTD_PARTITIONS ++ del_mtd_partitions(bcm947xx_mtd); ++#endif ++ map_destroy(bcm947xx_mtd); ++ iounmap((void *) bcm947xx_map.map_priv_1); ++ bcm947xx_map.map_priv_1 = 0; ++} ++ ++module_init(init_bcm947xx_map); ++module_exit(cleanup_bcm947xx_map); +diff -Nur linux-2.4.32/drivers/mtd/maps/Config.in linux-2.4.32-flash/drivers/mtd/maps/Config.in +--- linux-2.4.32/drivers/mtd/maps/Config.in 2003-06-13 16:51:34.000000000 +0200 ++++ linux-2.4.32-flash/drivers/mtd/maps/Config.in 2005-12-18 15:53:52.003277250 +0100 +@@ -48,6 +48,7 @@ + fi + + if [ "$CONFIG_MIPS" = "y" ]; then ++ dep_tristate ' CFI Flash device mapped on Broadcom BCM947XX boards' CONFIG_MTD_BCM947XX $CONFIG_MTD_CFI + dep_tristate ' Pb1000 MTD support' CONFIG_MTD_PB1000 $CONFIG_MIPS_PB1000 + dep_tristate ' Pb1500 MTD support' CONFIG_MTD_PB1500 $CONFIG_MIPS_PB1500 + dep_tristate ' Pb1100 MTD support' CONFIG_MTD_PB1100 $CONFIG_MIPS_PB1100 +diff -Nur linux-2.4.32/drivers/mtd/maps/Makefile linux-2.4.32-flash/drivers/mtd/maps/Makefile +--- linux-2.4.32/drivers/mtd/maps/Makefile 2003-06-13 16:51:34.000000000 +0200 ++++ linux-2.4.32-flash/drivers/mtd/maps/Makefile 2005-12-18 15:54:39.022215750 +0100 +@@ -3,6 +3,8 @@ + # + # $Id: Makefile,v 1.37 2003/01/24 14:26:38 dwmw2 Exp $ + ++EXTRA_CFLAGS := -I$(TOPDIR)/arch/mips/bcm947xx/include ++ + BELOW25 := $(shell echo $(PATCHLEVEL) | sed s/[1234]/y/) + + ifeq ($(BELOW25),y) +@@ -10,6 +12,7 @@ + endif + + # Chip mappings ++obj-$(CONFIG_MTD_BCM947XX) += bcm947xx-flash.o + obj-$(CONFIG_MTD_CDB89712) += cdb89712.o + obj-$(CONFIG_MTD_ARM_INTEGRATOR)+= integrator-flash.o + obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o |