diff options
Diffstat (limited to 'drivers/nor/cfi_flash_intel.c')
| -rw-r--r-- | drivers/nor/cfi_flash_intel.c | 52 |
1 files changed, 40 insertions, 12 deletions
diff --git a/drivers/nor/cfi_flash_intel.c b/drivers/nor/cfi_flash_intel.c index 43447609d8..c3cbad55f9 100644 --- a/drivers/nor/cfi_flash_intel.c +++ b/drivers/nor/cfi_flash_intel.c @@ -9,18 +9,19 @@ */ static void intel_read_jedec_ids (struct flash_info *info) { + info->cmd_reset = FLASH_CMD_RESET; info->manufacturer_id = 0; info->device_id = 0; info->device_id2 = 0; - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); + flash_write_cmd(info, 0, 0, info->cmd_reset); 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, - FLASH_OFFSET_MANUFACTURER_ID); + + info->manufacturer_id = jedec_read_mfr(info); info->device_id = flash_read_uchar (info, FLASH_OFFSET_DEVICE_ID); - flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); + flash_write_cmd(info, 0, 0, info->cmd_reset); } /* @@ -54,11 +55,9 @@ static int intel_flash_write_cfibuffer (struct flash_info *info, ulong dest, con flash_sect_t sector; int cnt; int retcode; - volatile cfiptr_t src; - volatile cfiptr_t dst; + void *src = (void*)cp; + void *dst = (void *)dest; - src.cp = (uchar *)cp; - dst.cp = (uchar *) dest; sector = find_sector (info, dest); flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS); flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER); @@ -74,13 +73,17 @@ static int intel_flash_write_cfibuffer (struct flash_info *info, ulong dest, con flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { if (bankwidth_is_1(info)) { - *dst.cp++ = *src.cp++; + flash_write8(flash_read8(src), dst); + src += 1, dst += 1; } else if (bankwidth_is_2(info)) { - *dst.wp++ = *src.wp++; + flash_write16(flash_read16(src), dst); + src += 2, dst += 2; } else if (bankwidth_is_4(info)) { - *dst.lp++ = *src.lp++; + flash_write32(flash_read32(src), dst); + src += 4, dst += 4; } else if (bankwidth_is_8(info)) { - *dst.llp++ = *src.llp++; + flash_write64(flash_read64(src), dst); + src += 8, dst += 8; } } @@ -126,6 +129,29 @@ static int intel_flash_status_check (struct flash_info *info, flash_sect_t secto return retcode; } +static int intel_flash_real_protect (struct flash_info *info, long sector, int prot) +{ + flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS); + flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT); + if (prot) + flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET); + else + flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR); + + return 0; +} + +static void intel_flash_fixup (struct flash_info *info, struct cfi_qry *qry) +{ +#ifdef CFG_FLASH_PROTECTION + /* read legacy lock/unlock bit from intel flash */ + if (info->ext_addr) { + info->legacy_unlock = flash_read_uchar (info, + info->ext_addr + 5) & 0x08; + } +#endif +} + struct cfi_cmd_set cfi_cmd_set_intel = { .flash_write_cfibuffer = intel_flash_write_cfibuffer, .flash_erase_one = intel_flash_erase_one, @@ -133,5 +159,7 @@ struct cfi_cmd_set cfi_cmd_set_intel = { .flash_read_jedec_ids = intel_read_jedec_ids, .flash_prepare_write = intel_flash_prepare_write, .flash_status_check = intel_flash_status_check, + .flash_real_protect = intel_flash_real_protect, + .flash_fixup = intel_flash_fixup, }; |