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env: fat: Allow overriding interface, device and partition

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

Signed-off-by: He Yong <hyyoxhk@163.com>
This commit is contained in:
He Yong 2022-02-18 00:07:25 +08:00 committed by Tom Rini
parent ec57bd7454
commit eb68ead2d3
2 changed files with 39 additions and 15 deletions
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34
env/fat.c vendored
View file

@ -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;
}

20
include/env_internal.h
View file

@ -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_ */