static int env_ubi_load(void)
{
ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE);
ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE);
int read1_fail, read2_fail;
env_t *tmp_env1, *tmp_env2;
/*
* In case we have restarted u-boot there is a chance that buffer
* contains old environment (from the previous boot).
* If UBI volume is zero size, ubi_volume_read() doesn't modify the
* buffer.
* We need to clear buffer manually here, so the invalid CRC will
* cause setting default environment as expected.
*/
memset(env1_buf, 0x0, CONFIG_ENV_SIZE);
memset(env2_buf, 0x0, CONFIG_ENV_SIZE);
tmp_env1 = (env_t *)env1_buf;
tmp_env2 = (env_t *)env2_buf;
if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
printf("\n** Cannot find mtd partition \"%s\"\n",
CONFIG_ENV_UBI_PART);
set_default_env(NULL);
return -EIO;
}
read1_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1,
CONFIG_ENV_SIZE);
if (read1_fail)
printf("\n** Unable to read env from %s:%s **\n",
CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
read2_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND,
(void *)tmp_env2, CONFIG_ENV_SIZE);
if (read2_fail)
printf("\n** Unable to read redundant env from %s:%s **\n",
CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);
return env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
read2_fail);
}
static int env_sf_load(void)
{
int ret;
int read1_fail, read2_fail;
env_t *tmp_env1, *tmp_env2;
tmp_env1 = (env_t *)memalign(ARCH_DMA_MINALIGN,
CONFIG_ENV_SIZE);
tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN,
CONFIG_ENV_SIZE);
if (!tmp_env1 || !tmp_env2) {
set_default_env("!malloc() failed");
ret = -EIO;
goto out;
}
ret = setup_flash_device();
if (ret)
goto out;
read1_fail = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
CONFIG_ENV_SIZE, tmp_env1);
read2_fail = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND,
CONFIG_ENV_SIZE, tmp_env2);
ret = env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
read2_fail);
spi_flash_free(env_flash);
env_flash = NULL;
out:
free(tmp_env1);
free(tmp_env2);
return ret;
}
static int env_mmc_load(void)
{
#if !defined(ENV_IS_EMBEDDED)
struct mmc *mmc;
u32 offset1, offset2;
int read1_fail = 0, read2_fail = 0;
int ret;
int dev = mmc_get_env_dev();
const char *errmsg = NULL;
ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env1, 1);
ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env2, 1);
mmc = find_mmc_device(dev);
errmsg = init_mmc_for_env(mmc);
if (errmsg) {
ret = -EIO;
goto err;
}
if (mmc_get_env_addr(mmc, 0, &offset1) ||
mmc_get_env_addr(mmc, 1, &offset2)) {
ret = -EIO;
goto fini;
}
read1_fail = read_env(mmc, CONFIG_ENV_SIZE, offset1, tmp_env1);
read2_fail = read_env(mmc, CONFIG_ENV_SIZE, offset2, tmp_env2);
if (read1_fail && read2_fail)
puts("*** Error - No Valid Environment Area found\n");
else if (read1_fail || read2_fail)
puts("*** Warning - some problems detected "
"reading environment; recovered successfully\n");
if (read1_fail && read2_fail) {
errmsg = "!bad CRC";
ret = -EIO;
goto fini;
} else if (!read1_fail && read2_fail) {
gd->env_valid = ENV_VALID;
env_import((char *)tmp_env1, 1);
} else if (read1_fail && !read2_fail) {
gd->env_valid = ENV_REDUND;
env_import((char *)tmp_env2, 1);
} else {
env_import_redund((char *)tmp_env1, (char *)tmp_env2);
}
ret = 0;
fini:
fini_mmc_for_env(mmc);
err:
if (ret)
set_default_env(errmsg);
#endif
return ret;
}
