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env_mmc: support env partition setup in runtime

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Add callback with __weak annotation to allow setup of environment
partition number in runtime from a board file.

Propagate mmc_switch_part() return value into init_mmc_for_env() instead
of -1 in case of failure.

Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
This commit is contained in:
Dmitry Lifshitz 2014-07-30 13:19:06 +03:00 committed by Pantelis Antoniou
parent ac77f42d09
commit 6e7b7df4df
2 changed files with 26 additions and 12 deletions
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35
common/env_mmc.c
View file

@ -62,16 +62,36 @@ int env_init(void)
return 0;
}
static int init_mmc_for_env(struct mmc *mmc)
{
#ifdef CONFIG_SYS_MMC_ENV_PART
__weak uint mmc_get_env_part(struct mmc *mmc)
{
return CONFIG_SYS_MMC_ENV_PART;
}
static int mmc_set_env_part(struct mmc *mmc)
{
uint part = mmc_get_env_part(mmc);
int dev = CONFIG_SYS_MMC_ENV_DEV;
int ret = 0;
#ifdef CONFIG_SPL_BUILD
dev = 0;
#endif
if (part != mmc->part_num) {
ret = mmc_switch_part(dev, part);
if (ret)
puts("MMC partition switch failed\n");
}
return ret;
}
#else
static inline int mmc_set_env_part(struct mmc *mmc) {return 0; };
#endif
static int init_mmc_for_env(struct mmc *mmc)
{
if (!mmc) {
puts("No MMC card found\n");
return -1;
@ -82,16 +102,7 @@ static int init_mmc_for_env(struct mmc *mmc)
return -1;
}
#ifdef CONFIG_SYS_MMC_ENV_PART
if (CONFIG_SYS_MMC_ENV_PART != mmc->part_num) {
if (mmc_switch_part(dev, CONFIG_SYS_MMC_ENV_PART)) {
puts("MMC partition switch failed\n");
return -1;
}
}
#endif
return 0;
return mmc_set_env_part(mmc);
}
static void fini_mmc_for_env(struct mmc *mmc)

3
include/environment.h
View file

@ -184,6 +184,9 @@ extern void env_reloc(void);
#include <mmc.h>
extern int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr);
# ifdef CONFIG_SYS_MMC_ENV_PART
extern uint mmc_get_env_part(struct mmc *mmc);
# endif
#endif
#ifndef DO_DEPS_ONLY