For example to store the environment in a file named "/uboot.env" in MMC "0", where partition "1" contains the EXT4 filesystem, the following configs should be added to the board's default config:

CONFIG_ENV_IS_IN_EXT4=y CONFIG_ENV_EXT4_DEVICE_AND_PART="0:1" CONFIG_ENV_EXT4_FILE="/uboot.env" CONFIG_ENV_EXT4_INTERFACE="mmc" --- env/Kconfig | 39 +++++++++++++++++++++++++++++++++++++++ env/env.c | 2 ++ env/ext4.c | 20 ++++++++++---------- 3 files changed, 51 insertions(+), 10 deletions(-)

diff --git a/env/Kconfig b/env/Kconfig index 2477bf8..71529b2 100644 --- a/env/Kconfig +++ b/env/Kconfig @@ -81,6 +81,13 @@ config ENV_IS_IN_FAT - CONFIG_FAT_WRITE: This must be enabled. Otherwise it cannot save the environment file.

+config ENV_IS_IN_EXT4 + bool "Environment is in a EXT4 filesystem" + depends on !CHAIN_OF_TRUST + select EXT4_WRITE + help + Define this if you want to use the EXT4 file system for the environment. + config ENV_IS_IN_FLASH bool "Environment in flash memory" depends on !CHAIN_OF_TRUST @@ -396,6 +403,38 @@ config ENV_FAT_FILE It's a string of the FAT file name. This file use to store the environment.

+config ENV_EXT4_INTERFACE + string "Name of the block device for the environment" + depends on ENV_IS_IN_EXT4 + help + Define this to a string that is the name of the block device. + +config ENV_EXT4_DEVICE_AND_PART + string "Device and partition for where to store the environemt in EXT4" + depends on ENV_IS_IN_EXT4 + help + Define this to a string to specify the partition of the device. It can + be as following: + + "D:P", "D:0", "D", "D:" or "D:auto" (D, P are integers. And P >= 1) + - "D:P": device D partition P. Error occurs if device D has no + partition table. + - "D:0": device D. + - "D" or "D:": device D partition 1 if device D has partition + table, or the whole device D if has no partition + table. + - "D:auto": first partition in device D with bootable flag set. + If none, first valid partition in device D. If no + partition table then means device D. + +config ENV_EXT4_FILE + string "Name of the EXT4 file to use for the environemnt" + depends on ENV_IS_IN_EXT4 + default "uboot.env" + help + It's a string of the EXT4 file name. This file use to store the + environment (explicit path to the file) + if ARCH_SUNXI

config ENV_OFFSET diff --git a/env/env.c b/env/env.c index 76a5608..7455632 100644 --- a/env/env.c +++ b/env/env.c @@ -32,6 +32,8 @@ static enum env_location env_get_default_location(void) return ENVL_EEPROM; else if IS_ENABLED(CONFIG_ENV_IS_IN_FAT) return ENVL_FAT; + else if IS_ENABLED(CONFIG_ENV_IS_IN_EXT4) + return ENVL_EXT4; else if IS_ENABLED(CONFIG_ENV_IS_IN_FLASH) return ENVL_FLASH; else if IS_ENABLED(CONFIG_ENV_IS_IN_MMC) diff --git a/env/ext4.c b/env/ext4.c index 6520221..07fd061 100644 --- a/env/ext4.c +++ b/env/ext4.c @@ -46,8 +46,8 @@ static int env_ext4_save(void) if (err) return err;

- part = blk_get_device_part_str(EXT4_ENV_INTERFACE, - EXT4_ENV_DEVICE_AND_PART, + part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE, + CONFIG_ENV_EXT4_DEVICE_AND_PART, &dev_desc, &info, 1); if (part < 0) return 1; @@ -57,16 +57,16 @@ static int env_ext4_save(void)

if (!ext4fs_mount(info.size)) { printf("\n** Unable to use %s %s for saveenv **\n", - EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART); + CONFIG_ENV_EXT4_INTERFACE, CONFIG_ENV_EXT4_DEVICE_AND_PART); return 1; }

- err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t)); + err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new, sizeof(env_t)); ext4fs_close();

if (err == -1) { printf("\n** Unable to write "%s" from %s%d:%d **\n", - EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part); + CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev, part); return 1; }

@@ -84,8 +84,8 @@ static int env_ext4_load(void) int err; loff_t off;

- part = blk_get_device_part_str(EXT4_ENV_INTERFACE, - EXT4_ENV_DEVICE_AND_PART, + part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE, + CONFIG_ENV_EXT4_DEVICE_AND_PART, &dev_desc, &info, 1); if (part < 0) goto err_env_relocate; @@ -95,16 +95,16 @@ static int env_ext4_load(void)

if (!ext4fs_mount(info.size)) { printf("\n** Unable to use %s %s for loading the env **\n", - EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART); + CONFIG_ENV_EXT4_INTERFACE, CONFIG_ENV_EXT4_DEVICE_AND_PART); goto err_env_relocate; }

- err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off); + err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE, &off); ext4fs_close();

if (err == -1) { printf("\n** Unable to read "%s" from %s%d:%d **\n", - EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part); + CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev, part); goto err_env_relocate; }