diff options
| -rw-r--r-- | README | 6 | ||||
| -rw-r--r-- | common/env_nand.c | 43 | ||||
| -rw-r--r-- | include/configs/smdk6400.h | 3 | ||||
| -rw-r--r-- | nand_spl/nand_boot.c | 10 |
4 files changed, 49 insertions, 13 deletions
@@ -2428,6 +2428,12 @@ to save the current settings. to a block boundary, and CONFIG_ENV_SIZE must be a multiple of the NAND devices block size. +- CONFIG_NAND_ENV_DST + + Defines address in RAM to which the nand_spl code should copy the + environment. If redundant environment is used, it will be copied to + CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. + - CONFIG_SYS_SPI_INIT_OFFSET Defines offset to the initial SPI buffer area in DPRAM. The diff --git a/common/env_nand.c b/common/env_nand.c index 21bce25..90a1c45 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -68,9 +68,11 @@ extern int default_environment_size; char * env_name_spec = "NAND"; -#ifdef ENV_IS_EMBEDDED +#if defined(ENV_IS_EMBEDDED) extern uchar environment[]; env_t *env_ptr = (env_t *)(&environment[0]); +#elif defined(CONFIG_NAND_ENV_DST) +env_t *env_ptr = (env_t *)CONFIG_NAND_ENV_DST; #else /* ! ENV_IS_EMBEDDED */ env_t *env_ptr = 0; #endif /* ENV_IS_EMBEDDED */ @@ -102,23 +104,33 @@ uchar env_get_char_spec (int index) */ int env_init(void) { -#if defined(ENV_IS_EMBEDDED) +#if defined(ENV_IS_EMBEDDED) || defined(CONFIG_NAND_ENV_DST) int crc1_ok = 0, crc2_ok = 0; - env_t *tmp_env1, *tmp_env2; + env_t *tmp_env1; + +#ifdef CONFIG_ENV_OFFSET_REDUND + env_t *tmp_env2; - tmp_env1 = env_ptr; tmp_env2 = (env_t *)((ulong)env_ptr + CONFIG_ENV_SIZE); + crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc); +#endif + + tmp_env1 = env_ptr; crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc); - crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc); - if (!crc1_ok && !crc2_ok) + if (!crc1_ok && !crc2_ok) { + gd->env_addr = 0; gd->env_valid = 0; - else if(crc1_ok && !crc2_ok) + + return 0; + } else if (crc1_ok && !crc2_ok) { gd->env_valid = 1; - else if(!crc1_ok && crc2_ok) + } +#ifdef CONFIG_ENV_OFFSET_REDUND + else if (!crc1_ok && crc2_ok) { gd->env_valid = 2; - else { + } else { /* both ok - check serial */ if(tmp_env1->flags == 255 && tmp_env2->flags == 0) gd->env_valid = 2; @@ -132,14 +144,19 @@ int env_init(void) gd->env_valid = 1; } + if (gd->env_valid == 2) + env_ptr = tmp_env2; + else +#endif if (gd->env_valid == 1) env_ptr = tmp_env1; - else if (gd->env_valid == 2) - env_ptr = tmp_env2; -#else /* ENV_IS_EMBEDDED */ + + gd->env_addr = (ulong)env_ptr->data; + +#else /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */ gd->env_addr = (ulong)&default_environment[0]; gd->env_valid = 1; -#endif /* ENV_IS_EMBEDDED */ +#endif /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */ return (0); } diff --git a/include/configs/smdk6400.h b/include/configs/smdk6400.h index cac58cf..018f576 100644 --- a/include/configs/smdk6400.h +++ b/include/configs/smdk6400.h @@ -209,6 +209,9 @@ /* total memory available to uboot */ #define CONFIG_SYS_UBOOT_SIZE (1024 * 1024) +/* Put environment copies after the end of U-Boot owned RAM */ +#define CONFIG_NAND_ENV_DST (CONFIG_SYS_UBOOT_BASE + CONFIG_SYS_UBOOT_SIZE) + #ifdef CONFIG_ENABLE_MMU #define CONFIG_SYS_MAPPED_RAM_BASE 0xc0000000 #define CONFIG_BOOTCOMMAND "nand read 0xc0018000 0x60000 0x1c0000;" \ diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c index c7eadad..be2e69c 100644 --- a/nand_spl/nand_boot.c +++ b/nand_spl/nand_boot.c @@ -246,6 +246,16 @@ void nand_boot(void) ret = nand_load(&nand_info, CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE, (uchar *)CONFIG_SYS_NAND_U_BOOT_DST); +#ifdef CONFIG_NAND_ENV_DST + nand_load(&nand_info, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, + (uchar *)CONFIG_NAND_ENV_DST); + +#ifdef CONFIG_ENV_OFFSET_REDUND + nand_load(&nand_info, CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE, + (uchar *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE); +#endif +#endif + if (nand_chip.select_chip) nand_chip.select_chip(&nand_info, -1); |