diff options
| author | Stefan Roese <sr@denx.de> | 2013-04-04 15:53:14 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2013-04-22 10:56:38 +0200 |
| commit | 352ef3f1b613cb711c51ec962d2cc1eafff1bf95 (patch) | |
| tree | 22778d28cc3a90d6c725e7e254b00d7c0e4a2b8a /common/flash.c | |
| parent | d10f68ae47b67acab8b110b5c605dde4197a1820 (diff) | |
flash: Add optional verify-after-write feature
Sometimes it might make sense to verify the written data to NOR flash.
This patch adds this feature. To enable this verify-after-write, you
need to define CONFIG_FLASH_VERIFY in your board config header.
Please note that this option is useless in nearly all cases,
since such flash programming errors usually are detected earlier
while unprotecting/erasing/programming. Please only enable
this option if you really know what you are doing.
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'common/flash.c')
| -rw-r--r-- | common/flash.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/common/flash.c b/common/flash.c index 8244ba2ddd..0c57a3fcdd 100644 --- a/common/flash.c +++ b/common/flash.c @@ -149,6 +149,9 @@ flash_write (char *src, ulong addr, ulong cnt) flash_info_t *info_first = addr2info (addr); flash_info_t *info_last = addr2info (end ); flash_info_t *info; + __maybe_unused char *src_orig = src; + __maybe_unused char *addr_orig = (char *)addr; + __maybe_unused ulong cnt_orig = cnt; if (cnt == 0) { return (ERR_OK); @@ -185,6 +188,14 @@ flash_write (char *src, ulong addr, ulong cnt) addr += len; src += len; } + +#if defined(CONFIG_FLASH_VERIFY) + if (memcmp(src_orig, addr_orig, cnt_orig)) { + printf("\nVerify failed!\n"); + return ERR_PROG_ERROR; + } +#endif /* CONFIG_SYS_FLASH_VERIFY_AFTER_WRITE */ + return (ERR_OK); #endif /* CONFIG_SPD823TS */ } |