X-Git-Url: https://git.librecmc.org/?p=oweals%2Fu-boot.git;a=blobdiff_plain;f=env%2Fmmc.c;h=a8b661db80af45766811d7620c1b5b5d6dca23e7;hp=3f3092d975607a48161e3e74819d98a67a16ad64;hb=1099b2abef35c3c887f6afac1a8ef18c7924d5d2;hpb=336aee50cf55d4d98ddf3a4412c18286e7f0a4c0 diff --git a/env/mmc.c b/env/mmc.c index 3f3092d975..a8b661db80 100644 --- a/env/mmc.c +++ b/env/mmc.c @@ -1,7 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2008-2011 Freescale Semiconductor, Inc. - * - * SPDX-License-Identifier: GPL-2.0+ */ /* #define DEBUG */ @@ -9,39 +8,85 @@ #include #include -#include +#include +#include #include #include #include #include #include +#include #include #include -#if defined(CONFIG_ENV_SIZE_REDUND) && \ - (CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE) -#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE -#endif +#define __STR(X) #X +#define STR(X) __STR(X) DECLARE_GLOBAL_DATA_PTR; -#if !defined(CONFIG_ENV_OFFSET) -#define CONFIG_ENV_OFFSET 0 -#endif - #if CONFIG_IS_ENABLED(OF_CONTROL) +static inline int mmc_offset_try_partition(const char *str, s64 *val) +{ + struct disk_partition info; + struct blk_desc *desc; + int len, i, ret; + + ret = blk_get_device_by_str("mmc", STR(CONFIG_SYS_MMC_ENV_DEV), &desc); + if (ret < 0) + return (ret); + + for (i = 1;;i++) { + ret = part_get_info(desc, i, &info); + if (ret < 0) + return ret; + + if (!strncmp((const char *)info.name, str, sizeof(str))) + break; + } + + /* round up to info.blksz */ + len = (CONFIG_ENV_SIZE + info.blksz - 1) & ~(info.blksz - 1); + + /* use the top of the partion for the environment */ + *val = (info.start + info.size - 1) - len / info.blksz; + + return 0; +} + static inline s64 mmc_offset(int copy) { - const char *propname = "u-boot,mmc-env-offset"; - s64 defvalue = CONFIG_ENV_OFFSET; + const struct { + const char *offset_redund; + const char *partition; + const char *offset; + } dt_prop = { + .offset_redund = "u-boot,mmc-env-offset-redundant", + .partition = "u-boot,mmc-env-partition", + .offset = "u-boot,mmc-env-offset", + }; + s64 val = 0, defvalue; + const char *propname; + const char *str; + int err; + + /* look for the partition in mmc CONFIG_SYS_MMC_ENV_DEV */ + str = fdtdec_get_config_string(gd->fdt_blob, dt_prop.partition); + if (str) { + /* try to place the environment at end of the partition */ + err = mmc_offset_try_partition(str, &val); + if (!err) + return val; + } + + defvalue = CONFIG_ENV_OFFSET; + propname = dt_prop.offset; #if defined(CONFIG_ENV_OFFSET_REDUND) if (copy) { - propname = "u-boot,mmc-env-offset-redundant"; defvalue = CONFIG_ENV_OFFSET_REDUND; + propname = dt_prop.offset_redund; } #endif - return fdtdec_get_config_int(gd->fdt_blob, propname, defvalue); } #else @@ -102,19 +147,19 @@ static inline int mmc_set_env_part(struct mmc *mmc) {return 0; }; static const char *init_mmc_for_env(struct mmc *mmc) { if (!mmc) - return "!No MMC card found"; + return "No MMC card found"; -#ifdef CONFIG_BLK +#if CONFIG_IS_ENABLED(BLK) struct udevice *dev; if (blk_get_from_parent(mmc->dev, &dev)) - return "!No block device"; + return "No block device"; #else if (mmc_init(mmc)) - return "!MMC init failed"; + return "MMC init failed"; #endif if (mmc_set_env_part(mmc)) - return "!MMC partition switch failed"; + return "MMC partition switch failed"; return NULL; } @@ -179,7 +224,6 @@ static int env_mmc_save(void) goto fini; } - puts("done\n"); ret = 0; #ifdef CONFIG_ENV_OFFSET_REDUND @@ -190,6 +234,54 @@ fini: fini_mmc_for_env(mmc); return ret; } + +#if defined(CONFIG_CMD_ERASEENV) +static inline int erase_env(struct mmc *mmc, unsigned long size, + unsigned long offset) +{ + uint blk_start, blk_cnt, n; + struct blk_desc *desc = mmc_get_blk_desc(mmc); + + 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 = blk_derase(desc, blk_start, blk_cnt); + printf("%d blocks erased: %s\n", n, (n == blk_cnt) ? "OK" : "ERROR"); + + return (n == blk_cnt) ? 0 : 1; +} + +static int env_mmc_erase(void) +{ + int dev = mmc_get_env_dev(); + struct mmc *mmc = find_mmc_device(dev); + int ret, copy = 0; + u32 offset; + const char *errmsg; + + errmsg = init_mmc_for_env(mmc); + if (errmsg) { + printf("%s\n", errmsg); + return 1; + } + + if (mmc_get_env_addr(mmc, copy, &offset)) + return CMD_RET_FAILURE; + + ret = erase_env(mmc, CONFIG_ENV_SIZE, offset); + +#ifdef CONFIG_ENV_OFFSET_REDUND + copy = 1; + + if (mmc_get_env_addr(mmc, copy, &offset)) + return CMD_RET_FAILURE; + + ret |= erase_env(mmc, CONFIG_ENV_SIZE, offset); +#endif + + return ret; +} +#endif /* CONFIG_CMD_ERASEENV */ #endif /* CONFIG_CMD_SAVEENV && !CONFIG_SPL_BUILD */ static inline int read_env(struct mmc *mmc, unsigned long size, @@ -220,6 +312,8 @@ static int env_mmc_load(void) ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env1, 1); ALLOC_CACHE_ALIGN_BUFFER(env_t, tmp_env2, 1); + mmc_initialize(NULL); + mmc = find_mmc_device(dev); errmsg = init_mmc_for_env(mmc); @@ -237,33 +331,14 @@ static int env_mmc_load(void) read1_fail = read_env(mmc, CONFIG_ENV_SIZE, offset1, tmp_env1); read2_fail = read_env(mmc, CONFIG_ENV_SIZE, offset2, tmp_env2); - if (read1_fail && read2_fail) - puts("*** Error - No Valid Environment Area found\n"); - else if (read1_fail || read2_fail) - puts("*** Warning - some problems detected " - "reading environment; recovered successfully\n"); - - if (read1_fail && read2_fail) { - errmsg = "!bad CRC"; - ret = -EIO; - goto fini; - } else if (!read1_fail && read2_fail) { - gd->env_valid = ENV_VALID; - env_import((char *)tmp_env1, 1); - } else if (read1_fail && !read2_fail) { - gd->env_valid = ENV_REDUND; - env_import((char *)tmp_env2, 1); - } else { - env_import_redund((char *)tmp_env1, (char *)tmp_env2); - } - - ret = 0; + ret = env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2, + read2_fail); fini: fini_mmc_for_env(mmc); err: if (ret) - set_default_env(errmsg); + env_set_default(errmsg, 0); #endif return ret; @@ -278,6 +353,7 @@ static int env_mmc_load(void) int ret; int dev = mmc_get_env_dev(); const char *errmsg; + env_t *ep = NULL; mmc = find_mmc_device(dev); @@ -298,14 +374,17 @@ static int env_mmc_load(void) goto fini; } - env_import(buf, 1); - ret = 0; + ret = env_import(buf, 1); + if (!ret) { + ep = (env_t *)buf; + gd->env_addr = (ulong)&ep->data; + } fini: fini_mmc_for_env(mmc); err: if (ret) - set_default_env(errmsg); + env_set_default(errmsg, 0); #endif return ret; } @@ -317,5 +396,8 @@ U_BOOT_ENV_LOCATION(mmc) = { .load = env_mmc_load, #ifndef CONFIG_SPL_BUILD .save = env_save_ptr(env_mmc_save), +#if defined(CONFIG_CMD_ERASEENV) + .erase = env_mmc_erase, +#endif #endif };