diff options
Diffstat (limited to 'drivers/mtd/cfi_flash.c')
| -rw-r--r-- | drivers/mtd/cfi_flash.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 798902f337..c92c7a7a49 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -85,6 +85,17 @@ static phys_addr_t __cfi_flash_bank_addr(int i) phys_addr_t cfi_flash_bank_addr(int i) __attribute__((weak, alias("__cfi_flash_bank_addr"))); +static unsigned long __cfi_flash_bank_size(int i) +{ +#ifdef CONFIG_SYS_FLASH_BANKS_SIZES + return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i]; +#else + return 0; +#endif +} +unsigned long cfi_flash_bank_size(int i) + __attribute__((weak, alias("__cfi_flash_bank_size"))); + static void __flash_write8(u8 value, void *addr) { __raw_writeb(value, addr); @@ -1826,7 +1837,7 @@ static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry) * The following code cannot be run from FLASH! * */ -ulong flash_get_size (phys_addr_t base, int banknum) +ulong flash_get_size (phys_addr_t base, int banknum, unsigned long max_size) { flash_info_t *info = &flash_info[banknum]; int i, j; @@ -1915,6 +1926,13 @@ ulong flash_get_size (phys_addr_t base, int banknum) debug ("size_ratio %d port %d bits chip %d bits\n", size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); + info->size = 1 << qry.dev_size; + /* multiply the size by the number of chips */ + info->size *= size_ratio; + if (max_size && (info->size > max_size)) { + debug("[truncated from %ldMiB]", info->size >> 20); + info->size = max_size; + } debug ("found %d erase regions\n", num_erase_regions); sect_cnt = 0; sector = base; @@ -1935,6 +1953,8 @@ ulong flash_get_size (phys_addr_t base, int banknum) debug ("erase_region_count = %d erase_region_size = %d\n", erase_region_count, erase_region_size); for (j = 0; j < erase_region_count; j++) { + if (sector - base >= info->size) + break; if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) { printf("ERROR: too many flash sectors\n"); break; @@ -1968,9 +1988,6 @@ ulong flash_get_size (phys_addr_t base, int banknum) } info->sector_count = sect_cnt; - info->size = 1 << qry.dev_size; - /* multiply the size by the number of chips */ - info->size *= size_ratio; info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size); tmp = 1 << qry.block_erase_timeout_typ; info->erase_blk_tout = tmp * @@ -2026,7 +2043,8 @@ unsigned long flash_init (void) flash_info[i].flash_id = FLASH_UNKNOWN; if (!flash_detect_legacy(cfi_flash_bank_addr(i), i)) - flash_get_size(cfi_flash_bank_addr(i), i); + flash_get_size(cfi_flash_bank_addr(i), i, + cfi_flash_bank_size(i)); size += flash_info[i].size; if (flash_info[i].flash_id == FLASH_UNKNOWN) { #ifndef CONFIG_SYS_FLASH_QUIET_TEST |