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env_mmc: add error message to pass to set_default_env

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Add an error message that gets passed to set_default_env() like
env_nand implements. This message is displayed to the user as the
reason for falling back to the default environment.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
This commit is contained in:
Tim Harvey 2015-05-08 14:52:09 -07:00 committed by Tom Rini
parent f19f389f34
commit c75648d75e
1 changed files with 24 additions and 16 deletions
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40
common/env_mmc.c
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@ -90,19 +90,18 @@ static int mmc_set_env_part(struct mmc *mmc)
static inline int mmc_set_env_part(struct mmc *mmc) {return 0; };
#endif
static int init_mmc_for_env(struct mmc *mmc)
static const char *init_mmc_for_env(struct mmc *mmc)
{
if (!mmc) {
puts("No MMC card found\n");
return -1;
}
if (!mmc)
return "No MMC card found";
if (mmc_init(mmc)) {
puts("MMC init failed\n");
return -1;
}
if (mmc_init(mmc))
return "MMC init failed";
return mmc_set_env_part(mmc);
if (mmc_set_env_part(mmc))
return "MMC partition switch failed";
return NULL;
}
static void fini_mmc_for_env(struct mmc *mmc)
@ -143,9 +142,13 @@ int saveenv(void)
struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
u32 offset;
int ret, copy = 0;
const char *errmsg;
if (init_mmc_for_env(mmc))
errmsg = init_mmc_for_env(mmc);
if (errmsg) {
printf("%s\n", errmsg);
return 1;
}
ret = env_export(env_new);
if (ret)
@ -213,6 +216,7 @@ void env_relocate_spec(void)
env_t *ep;
int ret;
int dev = CONFIG_SYS_MMC_ENV_DEV;
const char *errmsg = NULL;
ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env1, 1);
ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env2, 1);
@ -223,7 +227,8 @@ void env_relocate_spec(void)
mmc = find_mmc_device(dev);
if (init_mmc_for_env(mmc)) {
errmsg = init_mmc_for_env(mmc);
if (errmsg) {
ret = 1;
goto err;
}
@ -249,6 +254,7 @@ void env_relocate_spec(void)
(crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
if (!crc1_ok && !crc2_ok) {
errmsg = "!bad CRC";
ret = 1;
goto fini;
} else if (crc1_ok && !crc2_ok) {
@ -284,8 +290,7 @@ fini:
fini_mmc_for_env(mmc);
err:
if (ret)
set_default_env(NULL);
set_default_env(errmsg);
#endif
}
#else /* ! CONFIG_ENV_OFFSET_REDUND */
@ -297,6 +302,7 @@ void env_relocate_spec(void)
u32 offset;
int ret;
int dev = CONFIG_SYS_MMC_ENV_DEV;
const char *errmsg;
#ifdef CONFIG_SPL_BUILD
dev = 0;
@ -304,7 +310,8 @@ void env_relocate_spec(void)
mmc = find_mmc_device(dev);
if (init_mmc_for_env(mmc)) {
errmsg = init_mmc_for_env(mmc);
if (errmsg) {
ret = 1;
goto err;
}
@ -315,6 +322,7 @@ void env_relocate_spec(void)
}
if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf)) {
errmsg = "!read failed";
ret = 1;
goto fini;
}
@ -326,7 +334,7 @@ fini:
fini_mmc_for_env(mmc);
err:
if (ret)
set_default_env(NULL);
set_default_env(errmsg);
#endif
}
#endif /* CONFIG_ENV_OFFSET_REDUND */