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| author | Brandon Maier <brandon.maier@rockwellcollins.com> | 2021-01-16 15:14:43 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-04-16 13:37:06 -0400 |
| commit | 2339f01af6478f93aada713fa33b5e04c3497724 (patch) | |
| tree | 2c1eac45e01353e7fb88a0560f753f6412f265b9 /env | |
| parent | 9636bf8b2e319c0f43453f71131ba70856571d05 (diff) | |
| download | u-boot-2339f01af6478f93aada713fa33b5e04c3497724.zip u-boot-2339f01af6478f93aada713fa33b5e04c3497724.tar.gz u-boot-2339f01af6478f93aada713fa33b5e04c3497724.tar.bz2 | |
env/fat.c: support redund environment
Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com>
CC: Joe Hershberger <joe.hershberger@ni.com>
CC: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'env')
| -rw-r--r-- | env/Kconfig | 8 | ||||
| -rw-r--r-- | env/fat.c | 40 |
2 files changed, 40 insertions, 8 deletions
diff --git a/env/Kconfig b/env/Kconfig index 844c312..08e49c2 100644 --- a/env/Kconfig +++ b/env/Kconfig @@ -476,6 +476,14 @@ config ENV_FAT_FILE It's a string of the FAT file name. This file use to store the environment. +config ENV_FAT_FILE_REDUND + string "Name of the FAT file to use for the environment" + depends on ENV_IS_IN_FAT && SYS_REDUNDAND_ENVIRONMENT + default "uboot-redund.env" + help + It's a string of the FAT file name. This file use to store the + redundant environment. + config ENV_EXT4_INTERFACE string "Name of the block device for the environment" depends on ENV_IS_IN_EXT4 @@ -18,6 +18,7 @@ #include <fat.h> #include <mmc.h> #include <asm/cache.h> +#include <asm/global_data.h> #include <linux/stddef.h> #ifdef CONFIG_SPL_BUILD @@ -29,6 +30,8 @@ # define LOADENV #endif +DECLARE_GLOBAL_DATA_PTR; + static char *env_fat_device_and_part(void) { #ifdef CONFIG_MMC @@ -53,6 +56,7 @@ static int env_fat_save(void) env_t __aligned(ARCH_DMA_MINALIGN) env_new; struct blk_desc *dev_desc = NULL; struct disk_partition info; + const char *file = CONFIG_ENV_FAT_FILE; int dev, part; int err; loff_t size; @@ -78,29 +82,41 @@ static int env_fat_save(void) return 1; } - err = file_fat_write(CONFIG_ENV_FAT_FILE, (void *)&env_new, 0, sizeof(env_t), - &size); +#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT + if (gd->env_valid == ENV_VALID) + file = CONFIG_ENV_FAT_FILE_REDUND; +#endif + + err = file_fat_write(file, (void *)&env_new, 0, sizeof(env_t), &size); if (err == -1) { /* * 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... ", - CONFIG_ENV_FAT_FILE, CONFIG_ENV_FAT_INTERFACE, dev, part); + file, CONFIG_ENV_FAT_INTERFACE, dev, part); return 1; } +#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT + gd->env_valid = (gd->env_valid == ENV_REDUND) ? ENV_VALID : ENV_REDUND; +#endif + return 0; } #ifdef LOADENV static int env_fat_load(void) { - ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); + ALLOC_CACHE_ALIGN_BUFFER(char, buf1, CONFIG_ENV_SIZE); +#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT + ALLOC_CACHE_ALIGN_BUFFER(char, buf2, CONFIG_ENV_SIZE); + int err2; +#endif struct blk_desc *dev_desc = NULL; struct disk_partition info; int dev, part; - int err; + int err1; #ifdef CONFIG_MMC if (!strcmp(CONFIG_ENV_FAT_INTERFACE, "mmc")) @@ -124,8 +140,15 @@ static int env_fat_load(void) goto err_env_relocate; } - err = file_fat_read(CONFIG_ENV_FAT_FILE, buf, CONFIG_ENV_SIZE); - if (err == -1) { + err1 = file_fat_read(CONFIG_ENV_FAT_FILE, buf1, CONFIG_ENV_SIZE); +#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT + err2 = file_fat_read(CONFIG_ENV_FAT_FILE_REDUND, buf2, CONFIG_ENV_SIZE); + + err1 = (err1 >= 0) ? 0 : -1; + err2 = (err2 >= 0) ? 0 : -1; + return env_import_redund(buf1, err1, buf2, err2, H_EXTERNAL); +#else + if (err1 < 0) { /* * This printf is embedded in the messages from env_save that * will calling it. The missing \n is intentional. @@ -135,7 +158,8 @@ static int env_fat_load(void) goto err_env_relocate; } - return env_import(buf, 1, H_EXTERNAL); + return env_import(buf1, 1, H_EXTERNAL); +#endif err_env_relocate: env_set_default(NULL, 0); |