For platform which can boot on different device, this allows to override interface, device and partition from board code.

Signed-off-by: hyyxohk hyyoxhk@163.com --- env/fat.c | 34 +++++++++++++++++++--------------- include/env_internal.h | 20 ++++++++++++++++++++ 2 files changed, 39 insertions(+), 15 deletions(-)

diff --git a/env/fat.c b/env/fat.c index fdccd6cd2a..6251d9649b 100644 --- a/env/fat.c +++ b/env/fat.c @@ -32,7 +32,12 @@

DECLARE_GLOBAL_DATA_PTR;

-static char *env_fat_device_and_part(void) +__weak const char *env_fat_get_intf(void) +{ + return (const char *)CONFIG_ENV_FAT_INTERFACE; +} + +__weak char *env_fat_get_dev_part(void) { #ifdef CONFIG_MMC static char *part_str; @@ -60,14 +65,15 @@ static int env_fat_save(void) int dev, part; int err; loff_t size; + const char *ifname = env_fat_get_intf(); + const char *dev_and_part = env_fat_get_dev_part();

err = env_export(&env_new); if (err) return err;

- part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, - env_fat_device_and_part(), - &dev_desc, &info, 1); + part = blk_get_device_part_str(ifname, dev_and_part, + &dev_desc, &info, 1); if (part < 0) return 1;

@@ -77,8 +83,7 @@ static int env_fat_save(void) * This printf is embedded in the messages from env_save that * will calling it. The missing \n is intentional. */ - printf("Unable to use %s %d:%d... \n", - CONFIG_ENV_FAT_INTERFACE, dev, part); + printf("Unable to use %s %d:%d...\n", ifname, dev, part); return 1; }

@@ -93,8 +98,7 @@ static int env_fat_save(void) * This printf is embedded in the messages from env_save that * will calling it. The missing \n is intentional. */ - printf("Unable to write "%s" from %s%d:%d... \n", - file, CONFIG_ENV_FAT_INTERFACE, dev, part); + printf("Unable to write "%s" from %s%d:%d...\n", file, ifname, dev, part); return 1; }

@@ -117,15 +121,16 @@ static int env_fat_load(void) struct disk_partition info; int dev, part; int err1; + const char *ifname = env_fat_get_intf(); + const char *dev_and_part = env_fat_get_dev_part();

#ifdef CONFIG_MMC - if (!strcmp(CONFIG_ENV_FAT_INTERFACE, "mmc")) + if (!strcmp(ifname, "mmc")) mmc_initialize(NULL); #endif

- part = blk_get_device_part_str(CONFIG_ENV_FAT_INTERFACE, - env_fat_device_and_part(), - &dev_desc, &info, 1); + part = blk_get_device_part_str(ifname, dev_and_part, + &dev_desc, &info, 1); if (part < 0) goto err_env_relocate;

@@ -135,8 +140,7 @@ static int env_fat_load(void) * This printf is embedded in the messages from env_save that * will calling it. The missing \n is intentional. */ - printf("Unable to use %s %d:%d... \n", - CONFIG_ENV_FAT_INTERFACE, dev, part); + printf("Unable to use %s %d:%d...\n", ifname, dev, part); goto err_env_relocate; }

@@ -154,7 +158,7 @@ static int env_fat_load(void) * will calling it. The missing \n is intentional. */ printf("Unable to read "%s" from %s%d:%d... \n", - CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); + CONFIG_ENV_FAT_FILE, ifname, dev, part); goto err_env_relocate; }

diff --git a/include/env_internal.h b/include/env_internal.h index 174c3b1a79..e42ae826ef 100644 --- a/include/env_internal.h +++ b/include/env_internal.h @@ -245,6 +245,26 @@ const char *env_ext4_get_dev_part(void); * @return an enum env_location value on success, or -ve error code. */ enum env_location env_get_location(enum env_operation op, int prio); + +/** + * env_fat_get_intf() - Provide the interface for env in FAT + * + * It is a weak function allowing board to overidde the default interface for + * U-Boot env in FAT: CONFIG_ENV_FAT_INTERFACE + * + * @return string of interface, empty if not supported + */ +const char *env_fat_get_intf(void); + +/** + * env_fat_get_dev_part() - Provide the device and partition for env in FAT + * + * It is a weak function allowing board to overidde the default device and + * partition used for U-Boot env in FAT: CONFIG_ENV_FAT_DEVICE_AND_PART + * + * @return string of device and partition + */ +char *env_fat_get_dev_part(void) #endif /* DO_DEPS_ONLY */

#endif /* _ENV_INTERNAL_H_ */