This patch is to save environment data to mmc card. It uses interfaces defined in generic mmc.
Signed-off-by: Terry Lv r65388@freescale.com --- arch/arm/lib/board.c | 15 +++-- arch/powerpc/lib/board.c | 17 +++-- common/Makefile | 1 + common/cmd_nvedit.c | 3 +- common/env_mmc.c | 154 ++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 178 insertions(+), 12 deletions(-) create mode 100644 common/env_mmc.c
diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c index f5660a9..9ef37d0 100644 --- a/arch/arm/lib/board.c +++ b/arch/arm/lib/board.c @@ -347,6 +347,16 @@ void start_armboot (void) dataflash_print_info(); #endif
+#ifdef CONFIG_GENERIC_MMC +/* + * MMC initialization is called before relocating env. + * Thus It is required that operations like pin multiplexer + * be put in board_init. + */ + puts ("MMC: "); + mmc_initialize (gd->bd); +#endif + /* initialize environment */ env_relocate ();
@@ -419,11 +429,6 @@ extern void davinci_eth_set_mac_addr (const u_int8_t *addr); board_late_init (); #endif
-#ifdef CONFIG_GENERIC_MMC - puts ("MMC: "); - mmc_initialize (gd->bd); -#endif - #ifdef CONFIG_BITBANGMII bb_miiphy_init(); #endif diff --git a/arch/powerpc/lib/board.c b/arch/powerpc/lib/board.c index 7b09fb5..6850633 100644 --- a/arch/powerpc/lib/board.c +++ b/arch/powerpc/lib/board.c @@ -783,6 +783,17 @@ void board_init_r (gd_t *id, ulong dest_addr) nand_init(); /* go init the NAND */ #endif
+#ifdef CONFIG_GENERIC_MMC +/* + * MMC initialization is called before relocating env. + * Thus It is required that operations like pin multiplexer + * be put in board_init. + */ + WATCHDOG_RESET (); + puts ("MMC: "); + mmc_initialize (bd); +#endif + /* relocate environment function pointers etc. */ env_relocate ();
@@ -939,12 +950,6 @@ void board_init_r (gd_t *id, ulong dest_addr) scsi_init (); #endif
-#ifdef CONFIG_GENERIC_MMC - WATCHDOG_RESET (); - puts ("MMC: "); - mmc_initialize (bd); -#endif - #if defined(CONFIG_CMD_DOC) WATCHDOG_RESET (); puts ("DOC: "); diff --git a/common/Makefile b/common/Makefile index dbf7a05..2c37073 100644 --- a/common/Makefile +++ b/common/Makefile @@ -58,6 +58,7 @@ COBJS-$(CONFIG_ENV_IS_IN_FLASH) += env_embedded.o COBJS-$(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_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 eb89e9e..57dc288 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -59,13 +59,14 @@ DECLARE_GLOBAL_DATA_PTR; !defined(CONFIG_ENV_IS_IN_FLASH) && \ !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ !defined(CONFIG_ENV_IS_IN_MG_DISK) && \ + !defined(CONFIG_ENV_IS_IN_MMC) && \ !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|NOWHERE} +SPI_FLASH|MG_DISK|NVRAM|MMC|NOWHERE} #endif
#define XMK_STR(x) #x diff --git a/common/env_mmc.c b/common/env_mmc.c new file mode 100644 index 0000000..c9a9415 --- /dev/null +++ b/common/env_mmc.c @@ -0,0 +1,154 @@ +/* + * (C) Copyright 2008-2010 Freescale Semiconductor, Inc. + * + * 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 <mmc.h> + +/* references to names in env_common.c */ +extern uchar default_environment[]; + +char *env_name_spec = "MMC"; + +#ifdef ENV_IS_EMBEDDED +extern uchar environment[]; +env_t *env_ptr = (env_t *)(&environment[0]); +#else /* ! ENV_IS_EMBEDDED */ +env_t *env_ptr = NULL; +#endif /* ENV_IS_EMBEDDED */ + +/* local functions */ +#if !defined(ENV_IS_EMBEDDED) +static void use_default(void); +#endif + +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; +} + +int init_mmc_for_env(struct mmc *mmc) +{ + if (!mmc) { + puts("No MMC card found\n"); + return -1; + } + + if (mmc_init(mmc)) { + puts("MMC init failed\n"); + return -1; + } + + return 0; +} + +#ifdef CONFIG_CMD_SAVEENV + +inline int write_env(struct mmc *mmc, unsigned long size, + unsigned long offset, const void *buffer) +{ + uint blk_start, blk_cnt, n; + + blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len; + blk_cnt = ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len; + + n = mmc->block_dev.block_write(CONFIG_SYS_MMC_ENV_DEV, blk_start, + blk_cnt, (u_char *)buffer); + + return (n == blk_cnt) ? 0 : -1; +} + +int saveenv(void) +{ + struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV); + + if (init_mmc_for_env(mmc)) + return 1; + + printf("Writing to MMC(%d)... ", CONFIG_SYS_MMC_ENV_DEV); + if (write_env(mmc, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, env_ptr)) { + puts("failed\n"); + return 1; + } + + puts("done\n"); + return 0; +} +#endif /* CONFIG_CMD_SAVEENV */ + +inline int read_env(struct mmc *mmc, unsigned long size, + unsigned long offset, const void *buffer) +{ + uint blk_start, blk_cnt, n; + + blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len; + blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len; + + n = mmc->block_dev.block_read(CONFIG_SYS_MMC_ENV_DEV, blk_start, + blk_cnt, (uchar *)buffer); + + return (n == blk_cnt) ? 0 : -1; +} + +void env_relocate_spec(void) +{ +#if !defined(ENV_IS_EMBEDDED) + struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV); + + if (init_mmc_for_env(mmc)) + return; + + if (read_env(mmc, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, env_ptr)) + return use_default(); + + if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc) + return use_default(); + + gd->env_valid = 1; +#endif +} + +#if !defined(ENV_IS_EMBEDDED) +static void use_default() +{ + puts ("*** Warning - bad CRC or MMC, using default environment\n\n"); + set_default_env(); +} +#endif +