diff options
| -rw-r--r-- | README | 9 | ||||
| -rw-r--r-- | common/flash.c | 11 |
2 files changed, 20 insertions, 0 deletions
@@ -3248,6 +3248,15 @@ Configuration Settings: digits and dots. Recommended value: 45 (9..1) for 80 column displays, 15 (3..1) for 40 column displays. +- CONFIG_FLASH_VERIFY + If defined, the content of the flash (destination) is compared + against the source after the write operation. An error message + will be printed when the contents are not identical. + 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. + - CONFIG_SYS_RX_ETH_BUFFER: Defines the number of Ethernet receive buffers. On some Ethernet controllers it is recommended to set this value 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 */ } |
