diff options
| -rw-r--r-- | drivers/misc/sentinel/fuse.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/misc/sentinel/fuse.c b/drivers/misc/sentinel/fuse.c index aa691d3791..99342d33c0 100644 --- a/drivers/misc/sentinel/fuse.c +++ b/drivers/misc/sentinel/fuse.c @@ -60,6 +60,11 @@ struct fsb_map_entry fsb_mapping_table[] = { { 46, 8 }, }; +/* None ECC banks such like Redundancy or Bit protect */ +u32 nonecc_fuse_banks[] = { + 0, 1, 8, 12, 16, 22, 24, 25, 26, 27, 36, 41, 51, 56 +}; + struct s400_map_entry s400_api_mapping_table[] = { { 1, 8 }, /* LOCK */ { 2, 8 }, /* ECID */ @@ -280,11 +285,26 @@ int fuse_prog(u32 bank, u32 word, u32 val) { u32 res; int ret; + bool lock = false; if (bank >= FUSE_BANKS || word >= WORDS_PER_BANKS || !val) return -EINVAL; - ret = ahab_write_fuse((bank * 8 + word), val, false, &res); + /* Lock 8ULP ECC fuse word, so second programming will return failure. + * iMX9 OTP can protect ECC fuse, so not need it + */ +#if defined(CONFIG_IMX8ULP) + u32 i; + for (i = 0; i < ARRAY_SIZE(nonecc_fuse_banks); i++) { + if (nonecc_fuse_banks[i] == bank) + break; + } + + if (i == ARRAY_SIZE(nonecc_fuse_banks)) + lock = true; +#endif + + ret = ahab_write_fuse((bank * 8 + word), val, lock, &res); if (ret) { printf("ahab write fuse failed %d, 0x%x\n", ret, res); return ret; |