diff options
Diffstat (limited to 'target/linux/amazon/files/drivers/mtd/maps/amazon.c')
| -rw-r--r-- | target/linux/amazon/files/drivers/mtd/maps/amazon.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/target/linux/amazon/files/drivers/mtd/maps/amazon.c b/target/linux/amazon/files/drivers/mtd/maps/amazon.c deleted file mode 100644 index 568f7d828d..0000000000 --- a/target/linux/amazon/files/drivers/mtd/maps/amazon.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Handle mapping of the flash memory access routines - * on Amazon based devices. - * - * Copyright(C) 2004 peng.liu@infineon.com - * - * This code is GPLed - * - */ -// 000005:fchang 2005/6/2 Modified by Bingtao to double check if the EBU is enabled/disabled -// 506231:tc.chen 2005/06/23 increase firmware partition size form 192KB to 256KB -// 050701:linmars 2005/07/01 fix flash size wrong alignment after increase firmware partition -// 165001:henryhsu 2005/8/18 Remove the support for Intel flash because of 2.1 not enough rootfs partition size -// 165001:henryhsu 2005/9/7 Rolback to support INtel flash -// 509071:tc.chen 2005/09/07 Reduced flash writing time -// 511046:linmars 2005/11/04 change bootloader size from 128 into 64 -// 511241:linmars 2005/11/24 merge TaiChen's IRM patch - -// copyright 2005 infineon - -// copyright 2007 john crispin <blogic@openwrt.org> -// copyright 2007 felix fietkau <nbd@openwrt.org> -// copyright 2009 hauke mehrtens <hauke@hauke-m.de> - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <asm/io.h> - -#include <linux/init.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> -#include <linux/mtd/partitions.h> -#include <linux/mtd/cfi.h> -#include <linux/mutex.h> -#include <linux/platform_device.h> -#include <asm/amazon/amazon.h> - -#define AMAZON_PCI_ARB_CTL_ALT 0xb100205c -#define AMAZON_MTD_REG32( addr ) (*(volatile u32 *)(addr)) - - -static struct map_info amazon_map = { - .name = "AMAZON_FLASH", - .bankwidth = 2, -}; - -static map_word amazon_read16(struct map_info * map, unsigned long ofs) -{ - map_word temp; - ofs ^= 2; - temp.x[0] = *((__u16 *) (map->virt + ofs)); - return temp; -} - -static void amazon_write16(struct map_info *map, map_word d, unsigned long adr) -{ - adr ^= 2; - *((__u16 *) (map->virt + adr)) = d.x[0]; -} - -void amazon_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - u8 *p; - u8 *to_8; - from = (unsigned long) (from + map->virt); - p = (u8 *) from; - to_8 = (u8 *) to; - while(len--){ - *to_8++ = *p++; - } -} - -void amazon_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) -{ - u8 *p = (u8*) from; - u8 *to_8; - to += (unsigned long) map->virt; - to_8 = (u8*)to; - while(len--){ - *p++ = *to_8++; - } -} - -#define UBOOT_SIZE 0x40000 - -static struct mtd_partition amazon_partitions[3] = { - { - name:"U-Boot", /* U-Boot firmware */ - offset:0x00000000, - size:UBOOT_SIZE , /* 128k */ - }, - { - name:"kernel", /* firmware */ - offset:UBOOT_SIZE, - size:0x00100000, /* 192K */ - }, - { - name:"rootfs", /* default partition */ - offset:0x00200000, - size:0x00200000, - }, -}; - -unsigned long uImage_size = 0x10000d; - -int find_uImage_size(unsigned long start_offset) -{ - unsigned long magic; - unsigned long temp; - amazon_copy_from(&amazon_map, &magic, start_offset, 4); - if (!(ntohl(magic) == 0x27051956)) { - printk(KERN_INFO "amazon_mtd: invalid magic (0x%08X) of kernel at 0x%08lx \n", ntohl(magic), start_offset); - return 0; - } - amazon_copy_from(&amazon_map, &temp, start_offset + 12, 4); - printk(KERN_INFO "amazon_mtd: kernel size is %ld \n", temp + 0x40); - return temp + 0x40; -} - -static int amazon_mtd_probe(struct platform_device *dev) -{ - unsigned long uimage_size; - struct mtd_info *mymtd = NULL; - struct mtd_partition *parts = NULL; - - *AMAZON_EBU_BUSCON0 = 0x1d7ff; - - amazon_map.read = amazon_read16; - amazon_map.write = amazon_write16; - amazon_map.copy_from = amazon_copy_from; - amazon_map.copy_to = amazon_copy_to; - - amazon_map.phys = dev->resource->start; - amazon_map.size = dev->resource->end - amazon_map.phys + 1; - amazon_map.virt = ioremap_nocache(amazon_map.phys, amazon_map.size); - - if (!amazon_map.virt) { - printk(KERN_WARNING "amazon_mtd: Failed to ioremap!\n"); - return -EIO; - } - - mymtd = (struct mtd_info *) do_map_probe("cfi_probe", &amazon_map); - if (!mymtd) { - iounmap(amazon_map.virt); - printk(KERN_WARNING "amazon_mtd: probing failed\n"); - return -ENXIO; - } - - mymtd->owner = THIS_MODULE; - parts = &amazon_partitions[0]; - - /* Some Samsung devices are containing a 16 MB flash chip with a bigger U-Boot partition. */ - if(mymtd->size == 0x01000000 && mymtd->erasesize == 0x00020000) { - printk(KERN_INFO "amazon_mtd: Found big flash chip!\n"); - amazon_partitions[0].size = 0x60000; - amazon_partitions[1].offset = 0x60000; - uimage_size = find_uImage_size(amazon_partitions[1].offset); - amazon_partitions[1].size = uimage_size; - amazon_partitions[2].offset = 0x60000 + uimage_size; - amazon_partitions[2].size = mymtd->size - amazon_partitions[2].offset - mymtd->erasesize; - } else { - printk(KERN_INFO "amazon_mtd: Found small flash chip!\n"); - uimage_size = find_uImage_size(amazon_partitions[1].offset); - amazon_partitions[1].size = uimage_size; - amazon_partitions[2].offset = UBOOT_SIZE + uimage_size; - amazon_partitions[2].size = mymtd->size - amazon_partitions[2].offset - (2 * mymtd->erasesize); - } - - mtd_device_register(mymtd, parts, 3); - - printk(KERN_INFO "amazon_mtd: added %s flash with %dMB\n", - amazon_map.name, ((int)mymtd->size) >> 20); - return 0; -} - -static struct platform_driver amazon_mtd_driver = { - .probe = amazon_mtd_probe, - .driver = { - .name = "amazon_mtd", - .owner = THIS_MODULE, - }, -}; - -static int __init amazon_mtd_init(void) -{ - int ret = platform_driver_register(&amazon_mtd_driver); - if (ret) - printk(KERN_WARNING "amazon_mtd: error registering platfom driver!\n"); - return ret; -} - -static void __exit amazon_mtd_cleanup(void) -{ - platform_driver_unregister(&amazon_mtd_driver); -} - -module_init(amazon_mtd_init); -module_exit(amazon_mtd_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("john crispin blogic@openwrt.org"); -MODULE_DESCRIPTION("MTD map driver for AMAZON boards"); - |