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env: mmc: add redundancy support in mmc_offset_try_partition 

Manage 2 copy at the end of the partition selected by config
"u-boot,mmc-env-partition" to save the U-Boot environment,
with CONFIG_ENV_SIZE and 2*CONFIG_ENV_SIZE offset.

This patch allows to support redundancy (CONFIG_ENV_OFFSET_REDUND).

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2020-06-15 10:38:57 +02:00 committed by Tom Rini
parent 76b640c3f2
commit 5d4f7b4e2a
1 changed files with 3 additions and 3 deletions
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6
env/mmc.c vendored
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@ -34,7 +34,7 @@ __weak int mmc_get_env_dev(void)
}
#if CONFIG_IS_ENABLED(OF_CONTROL)
static inline int mmc_offset_try_partition(const char *str, s64 *val)
static inline int mmc_offset_try_partition(const char *str, int copy, s64 *val)
{
struct disk_partition info;
struct blk_desc *desc;
@ -59,7 +59,7 @@ static inline int mmc_offset_try_partition(const char *str, s64 *val)
len = DIV_ROUND_UP(CONFIG_ENV_SIZE, info.blksz);
/* use the top of the partion for the environment */
*val = (info.start + info.size - len) * info.blksz;
*val = (info.start + info.size - (1 + copy) * len) * info.blksz;
return 0;
}
@ -84,7 +84,7 @@ static inline s64 mmc_offset(int copy)
str = fdtdec_get_config_string(gd->fdt_blob, dt_prop.partition);
if (str) {
/* try to place the environment at end of the partition */
err = mmc_offset_try_partition(str, &val);
err = mmc_offset_try_partition(str, copy, &val);
if (!err)
return val;
}