The following must be defined:
CONFIG_ENV_IS_IN_FAT Enable this saving environment to FAT.
FAT_ENV_INTERFACE Interface the FAT resides on (e.g. mmc).
FAT_ENV_DEVICE The interface device number (e.g. 0 for mmc0)
FAT_ENV_PART The device part (e.g. 1 for mmc0:1)
FAT_ENV_FILE The filename of the environment file. --- common/Makefile | 1 + common/cmd_nvedit.c | 3 +- common/env_fat.c | 158 +++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 161 insertions(+), 1 deletions(-) create mode 100644 common/env_fat.c
diff --git a/common/Makefile b/common/Makefile index 2a31c62..7fcb108 100644 --- a/common/Makefile +++ b/common/Makefile @@ -54,6 +54,7 @@ COBJS-$(CONFIG_ENV_IS_IN_NVRAM) += env_embedded.o COBJS-$(CONFIG_ENV_IS_IN_FLASH) += env_flash.o COBJS-$(CONFIG_ENV_IS_IN_MG_DISK) += env_mgdisk.o COBJS-$(CONFIG_ENV_IS_IN_MMC) += env_mmc.o +COBJS-$(CONFIG_ENV_IS_IN_FAT) += env_fat.o COBJS-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o COBJS-$(CONFIG_ENV_IS_IN_NVRAM) += env_nvram.o COBJS-$(CONFIG_ENV_IS_IN_ONENAND) += env_onenand.o diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 22f9821..b1494dc 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -61,13 +61,14 @@ DECLARE_GLOBAL_DATA_PTR; !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ !defined(CONFIG_ENV_IS_IN_MG_DISK) && \ !defined(CONFIG_ENV_IS_IN_MMC) && \ + !defined(CONFIG_ENV_IS_IN_FAT) && \ !defined(CONFIG_ENV_IS_IN_NAND) && \ !defined(CONFIG_ENV_IS_IN_NVRAM) && \ !defined(CONFIG_ENV_IS_IN_ONENAND) && \ !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ !defined(CONFIG_ENV_IS_NOWHERE) # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ -SPI_FLASH|MG_DISK|NVRAM|MMC} or CONFIG_ENV_IS_NOWHERE +SPI_FLASH|MG_DISK|NVRAM|MMC|FAT} or CONFIG_ENV_IS_NOWHERE #endif
#define XMK_STR(x) #x diff --git a/common/env_fat.c b/common/env_fat.c new file mode 100644 index 0000000..a1bba3c --- /dev/null +++ b/common/env_fat.c @@ -0,0 +1,158 @@ +/* + * (c) Copyright 2011 by Tigris Elektronik GmbH + * + * Author: + * Maximilian Schwerin mvs@tigris.de + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* #define DEBUG */ + +#include <common.h> + +#include <command.h> +#include <environment.h> +#include <linux/stddef.h> +#include <malloc.h> +#include <search.h> +#include <errno.h> +#include <fat.h> +#include <mmc.h> + +char *env_name_spec = "FAT"; + +env_t *env_ptr; + +DECLARE_GLOBAL_DATA_PTR; + +uchar env_get_char_spec(int index) +{ + return *((uchar *)(gd->env_addr + index)); +} + +int env_init(void) +{ + /* use default */ + gd->env_addr = (ulong)&default_environment[0]; + gd->env_valid = 1; + + return 0; +} + +#ifdef CONFIG_CMD_SAVEENV +int saveenv(void) +{ + env_t env_new; + ssize_t len; + char *res; + block_dev_desc_t *dev_desc = NULL; + int dev = FAT_ENV_DEVICE; + int part = FAT_ENV_PART; + + res = (char *)&env_new.data; + len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL); + if (len < 0) { + error("Cannot export environment: errno = %d\n", errno); + return 1; + } + +#ifdef CONFIG_MMC + if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) { + struct mmc *mmc = find_mmc_device(dev); + + if (!mmc) { + printf("no mmc device at slot %x\n", dev); + return 1; + } + + mmc->has_init = 0; + mmc_init(mmc); + } +#endif /* CONFIG_MMC */ + + dev_desc = get_dev(FAT_ENV_INTERFACE, dev); + if (dev_desc == NULL) { + printf("Failed to find %s%d\n", + FAT_ENV_INTERFACE, dev); + return 1; + } + if (fat_register_device(dev_desc, part) != 0) { + printf("Failed to register %s%d:%d\n", + FAT_ENV_INTERFACE, dev, part); + return 1; + } + + env_new.crc = crc32(0, env_new.data, ENV_SIZE); + if (file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t)) == -1) { + printf("\n** Unable to write "%s" from %s%d:%d **\n", + FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part); + return 1; + } + + puts("done\n"); + return 0; +} +#endif /* CONFIG_CMD_SAVEENV */ + +void env_relocate_spec(void) +{ + char buf[CONFIG_ENV_SIZE]; + block_dev_desc_t *dev_desc = NULL; + int dev = FAT_ENV_DEVICE; + int part = FAT_ENV_PART; + +#ifdef CONFIG_MMC + if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) { + struct mmc *mmc = find_mmc_device(dev); + + if (!mmc) { + printf("no mmc device at slot %x\n", dev); + set_default_env(NULL); + return; + } + + mmc->has_init = 0; + mmc_init(mmc); + } +#endif /* CONFIG_MMC */ + + dev_desc = get_dev(FAT_ENV_INTERFACE, dev); + if (dev_desc == NULL) { + printf("Failed to find %s%d\n", + FAT_ENV_INTERFACE, dev); + set_default_env(NULL); + return; + } + if (fat_register_device(dev_desc, part) != 0) { + printf("Failed to register %s%d:%d\n", + FAT_ENV_INTERFACE, dev, part); + set_default_env(NULL); + return; + } + + if (file_fat_read(FAT_ENV_FILE, (unsigned char *)&buf, CONFIG_ENV_SIZE) == -1) { + printf("\n** Unable to read "%s" from %s%d:%d **\n", + FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part); + set_default_env(NULL); + return; + } + + env_import(buf, 1); +}