X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmtd%2Fcfi_flash.c;h=35294bc8c53ff37ffb059ac66765c733d71eacef;hb=d8bd820935bb9b8bf2717a259eeab4376e9ccc9a;hp=5788328ef149c5bb50814ad8101261f11c2a2fb3;hpb=a8708a86344794d7d9a25c71d2fe56b36563a0b5;p=u-boot diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 5788328ef1..35294bc8c5 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -40,6 +40,7 @@ #include #include #include +#include /* * This file implements a Common Flash Interface (CFI) driver for @@ -573,14 +574,18 @@ static int flash_status_check (flash_info_t * info, flash_sect_t sector, #endif /* Wait for command completion */ +#ifdef CONFIG_SYS_LOW_RES_TIMER reset_timer(); +#endif start = get_timer (0); + WATCHDOG_RESET(); while (flash_is_busy (info, sector)) { if (get_timer (start) > tout) { printf ("Flash %s timeout at address %lx data %lx\n", prompt, info->start[sector], flash_read_long (info, sector, 0)); flash_write_cmd (info, sector, 0, info->cmd_reset); + udelay(1); return ERR_TIMOUT; } udelay (1); /* also triggers watchdog */ @@ -628,6 +633,7 @@ static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, puts ("Vpp Low Error.\n"); } flash_write_cmd (info, sector, 0, info->cmd_reset); + udelay(1); break; default: break; @@ -660,8 +666,11 @@ static int flash_status_poll(flash_info_t *info, void *src, void *dst, #endif /* Wait for command completion */ +#ifdef CONFIG_SYS_LOW_RES_TIMER reset_timer(); +#endif start = get_timer(0); + WATCHDOG_RESET(); while (1) { switch (info->portwidth) { case FLASH_CFI_8BIT: @@ -864,7 +873,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, void *src = cp; void *dst = (void *)dest; void *dst2 = dst; - int flag = 0; + int flag = 1; uint offset = 0; unsigned int shift; uchar write_cmd; @@ -889,7 +898,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, cnt = len >> shift; - while ((cnt-- > 0) && (flag == 0)) { + while ((cnt-- > 0) && (flag == 1)) { switch (info->portwidth) { case FLASH_CFI_8BIT: flag = ((flash_read8(dst2) & flash_read8(src)) == @@ -1202,8 +1211,9 @@ void flash_print_info (flash_info_t * info) info->manufacturer_id); printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X", info->device_id); - if (info->device_id == 0x7E) { - printf("%04X", info->device_id2); + if ((info->device_id & 0xff) == 0x7E) { + printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X", + info->device_id2); } printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n", info->erase_blk_tout, @@ -1490,6 +1500,7 @@ void flash_read_user_serial (flash_info_t * info, void *buffer, int offset, flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID); memcpy (dst, src + offset, len); flash_write_cmd (info, 0, 0, info->cmd_reset); + udelay(1); flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src); } @@ -1505,6 +1516,7 @@ void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset, flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID); memcpy (buffer, src + offset, len); flash_write_cmd (info, 0, 0, info->cmd_reset); + udelay(1); flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src); } @@ -1536,6 +1548,7 @@ static void cfi_reverse_geometry(struct cfi_qry *qry) static void cmdset_intel_read_jedec_ids(flash_info_t *info) { flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); + udelay(1); flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID); udelay(1000); /* some flash are slow to respond */ info->manufacturer_id = flash_read_uchar (info, @@ -1599,11 +1612,20 @@ static void cmdset_amd_read_jedec_ids(flash_info_t *info) case FLASH_CFI_16BIT: info->device_id = flash_read_word (info, FLASH_OFFSET_DEVICE_ID); + if ((info->device_id & 0xff) == 0x7E) { + /* AMD 3-byte (expanded) device ids */ + info->device_id2 = flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID2); + info->device_id2 <<= 8; + info->device_id2 |= flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID3); + } break; default: break; } flash_write_cmd(info, 0, 0, AMD_CMD_RESET); + udelay(1); } static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry) @@ -1730,6 +1752,7 @@ void __flash_cmd_reset(flash_info_t *info) * that AMD flash roms ignore the Intel command. */ flash_write_cmd(info, 0, 0, AMD_CMD_RESET); + udelay(1); flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); } void flash_cmd_reset(flash_info_t *info) @@ -1852,11 +1875,16 @@ static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry) if (qry->num_erase_regions > 1) { /* reverse geometry if top boot part */ if (info->cfi_version < 0x3131) { - /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */ - if (info->device_id == 0x22CA || - info->device_id == 0x2256) { + /* CFI < 1.1, guess by device id */ + if (info->device_id == 0x22CA || /* M29W320DT */ + info->device_id == 0x2256 || /* M29W320ET */ + info->device_id == 0x22D7) { /* M29W800DT */ cfi_reverse_geometry(qry); } + } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { + /* CFI >= 1.1, deduct from top/bottom flag */ + /* note: ext_addr is valid since cfi_version > 0 */ + cfi_reverse_geometry(qry); } } } @@ -2089,6 +2117,14 @@ static void cfi_flash_set_config_reg(u32 base, u16 val) void flash_protect_default(void) { +#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST) + int i; + struct apl_s { + ulong start; + ulong size; + } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST; +#endif + /* Monitor protection ON by default */ #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \ (!defined(CONFIG_MONITOR_IS_IN_RAM)) @@ -2116,7 +2152,7 @@ void flash_protect_default(void) #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST) for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) { - debug("autoprotecting from %08x to %08x\n", + debug("autoprotecting from %08lx to %08lx\n", apl[i].start, apl[i].start + apl[i].size - 1); flash_protect(FLAG_PROTECT_SET, apl[i].start, @@ -2130,12 +2166,6 @@ unsigned long flash_init (void) { unsigned long size = 0; int i; -#if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST) - struct apl_s { - ulong start; - ulong size; - } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST; -#endif #ifdef CONFIG_SYS_FLASH_PROTECTION /* read environment from EEPROM */