X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=common%2Fenv_nand.c;h=2e28171ae094d79ecef8142c9b246954ce92284f;hb=0c1d74fda7c0063eeca4d8d9fa8674e6ec2ef685;hp=5b69889c02a70fc7f167eab7a04864ac3a2ebdfc;hpb=c259188b203d95e4a854e7e29b9e4472cc982f65;p=oweals%2Fu-boot.git diff --git a/common/env_nand.c b/common/env_nand.c index 5b69889c02..2e28171ae0 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -11,23 +11,7 @@ * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH * Andreas Heppel * - * 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 + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -35,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -140,22 +125,22 @@ int env_init(void) * The legacy NAND code saved the environment in the first NAND device i.e., * nand_dev_desc + 0. This is also the behaviour using the new NAND code. */ -int writeenv(size_t offset, u_char *buf) +static int writeenv(size_t offset, u_char *buf) { size_t end = offset + CONFIG_ENV_RANGE; size_t amount_saved = 0; size_t blocksize, len; u_char *char_ptr; - blocksize = nand_info[0].erasesize; - len = min(blocksize, CONFIG_ENV_SIZE); + blocksize = nand_info[0]->erasesize; + len = min(blocksize, (size_t)CONFIG_ENV_SIZE); while (amount_saved < CONFIG_ENV_SIZE && offset < end) { - if (nand_block_isbad(&nand_info[0], offset)) { + if (nand_block_isbad(nand_info[0], offset)) { offset += blocksize; } else { char_ptr = &buf[amount_saved]; - if (nand_write(&nand_info[0], offset, &len, char_ptr)) + if (nand_write(nand_info[0], offset, &len, char_ptr)) return 1; offset += blocksize; @@ -168,120 +153,117 @@ int writeenv(size_t offset, u_char *buf) return 0; } -#ifdef CONFIG_ENV_OFFSET_REDUND -static unsigned char env_flags; +struct env_location { + const char *name; + const nand_erase_options_t erase_opts; +}; -int saveenv(void) +static int erase_and_write_env(const struct env_location *location, + u_char *env_new) { - env_t env_new; - ssize_t len; - char *res; - int ret = 0; - nand_erase_options_t nand_erase_options; - - memset(&nand_erase_options, 0, sizeof(nand_erase_options)); - nand_erase_options.length = CONFIG_ENV_RANGE; - - if (CONFIG_ENV_RANGE < CONFIG_ENV_SIZE) - return 1; + int ret = 0; - res = (char *)&env_new.data; - len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); - if (len < 0) { - error("Cannot export environment: errno = %d\n", errno); + if (!nand_info[0]) return 1; - } - env_new.crc = crc32(0, env_new.data, ENV_SIZE); - env_new.flags = ++env_flags; /* increase the serial */ - - if (gd->env_valid == 1) { - puts("Erasing redundant NAND...\n"); - nand_erase_options.offset = CONFIG_ENV_OFFSET_REDUND; - if (nand_erase_opts(&nand_info[0], &nand_erase_options)) - return 1; - - puts("Writing to redundant NAND... "); - ret = writeenv(CONFIG_ENV_OFFSET_REDUND, (u_char *)&env_new); - } else { - puts("Erasing NAND...\n"); - nand_erase_options.offset = CONFIG_ENV_OFFSET; - if (nand_erase_opts(&nand_info[0], &nand_erase_options)) - return 1; - puts("Writing to NAND... "); - ret = writeenv(CONFIG_ENV_OFFSET, (u_char *)&env_new); - } - if (ret) { - puts("FAILED!\n"); + printf("Erasing %s...\n", location->name); + if (nand_erase_opts(nand_info[0], &location->erase_opts)) return 1; - } - - puts("done\n"); - gd->env_valid = gd->env_valid == 2 ? 1 : 2; + printf("Writing to %s... ", location->name); + ret = writeenv(location->erase_opts.offset, env_new); + puts(ret ? "FAILED!\n" : "OK\n"); return ret; } -#else /* ! CONFIG_ENV_OFFSET_REDUND */ + +#ifdef CONFIG_ENV_OFFSET_REDUND +static unsigned char env_flags; +#endif + int saveenv(void) { int ret = 0; ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1); - ssize_t len; - char *res; - nand_erase_options_t nand_erase_options; + int env_idx = 0; + static const struct env_location location[] = { + { + .name = "NAND", + .erase_opts = { + .length = CONFIG_ENV_RANGE, + .offset = CONFIG_ENV_OFFSET, + }, + }, +#ifdef CONFIG_ENV_OFFSET_REDUND + { + .name = "redundant NAND", + .erase_opts = { + .length = CONFIG_ENV_RANGE, + .offset = CONFIG_ENV_OFFSET_REDUND, + }, + }, +#endif + }; - memset(&nand_erase_options, 0, sizeof(nand_erase_options)); - nand_erase_options.length = CONFIG_ENV_RANGE; - nand_erase_options.offset = CONFIG_ENV_OFFSET; if (CONFIG_ENV_RANGE < CONFIG_ENV_SIZE) return 1; - res = (char *)&env_new->data; - len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); - if (len < 0) { - error("Cannot export environment: errno = %d\n", errno); - return 1; - } - env_new->crc = crc32(0, env_new->data, ENV_SIZE); + ret = env_export(env_new); + if (ret) + return ret; - puts("Erasing Nand...\n"); - if (nand_erase_opts(&nand_info[0], &nand_erase_options)) - return 1; +#ifdef CONFIG_ENV_OFFSET_REDUND + env_new->flags = ++env_flags; /* increase the serial */ + env_idx = (gd->env_valid == 1); +#endif - puts("Writing to Nand... "); - if (writeenv(CONFIG_ENV_OFFSET, (u_char *)env_new)) { - puts("FAILED!\n"); - return 1; + ret = erase_and_write_env(&location[env_idx], (u_char *)env_new); +#ifdef CONFIG_ENV_OFFSET_REDUND + if (!ret) { + /* preset other copy for next write */ + gd->env_valid = gd->env_valid == 2 ? 1 : 2; + return ret; } - puts("done\n"); + env_idx = (env_idx + 1) & 1; + ret = erase_and_write_env(&location[env_idx], (u_char *)env_new); + if (!ret) + printf("Warning: primary env write failed," + " redundancy is lost!\n"); +#endif + return ret; } -#endif /* CONFIG_ENV_OFFSET_REDUND */ #endif /* CMD_SAVEENV */ -int readenv(size_t offset, u_char *buf) +#if defined(CONFIG_SPL_BUILD) +static int readenv(size_t offset, u_char *buf) +{ + return nand_spl_load_image(offset, CONFIG_ENV_SIZE, buf); +} +#else +static int readenv(size_t offset, u_char *buf) { size_t end = offset + CONFIG_ENV_RANGE; size_t amount_loaded = 0; size_t blocksize, len; u_char *char_ptr; - blocksize = nand_info[0].erasesize; - if (!blocksize) + if (!nand_info[0]) return 1; - len = min(blocksize, CONFIG_ENV_SIZE); + blocksize = nand_info[0]->erasesize; + len = min(blocksize, (size_t)CONFIG_ENV_SIZE); while (amount_loaded < CONFIG_ENV_SIZE && offset < end) { - if (nand_block_isbad(&nand_info[0], offset)) { + if (nand_block_isbad(nand_info[0], offset)) { offset += blocksize; } else { char_ptr = &buf[amount_loaded]; - if (nand_read_skip_bad(&nand_info[0], offset, - &len, char_ptr)) + if (nand_read_skip_bad(nand_info[0], offset, + &len, NULL, + nand_info[0]->size, char_ptr)) return 1; offset += blocksize; @@ -294,9 +276,10 @@ int readenv(size_t offset, u_char *buf) return 0; } +#endif /* #if defined(CONFIG_SPL_BUILD) */ #ifdef CONFIG_ENV_OFFSET_OOB -int get_nand_env_oob(nand_info_t *nand, unsigned long *result) +int get_nand_env_oob(struct mtd_info *mtd, unsigned long *result) { struct mtd_oob_ops ops; uint32_t oob_buf[ENV_OFFSET_SIZE / sizeof(uint32_t)]; @@ -308,14 +291,14 @@ int get_nand_env_oob(nand_info_t *nand, unsigned long *result) ops.ooblen = ENV_OFFSET_SIZE; ops.oobbuf = (void *)oob_buf; - ret = nand->read_oob(nand, ENV_OFFSET_SIZE, &ops); + ret = mtd->read_oob(mtd, ENV_OFFSET_SIZE, &ops); if (ret) { printf("error reading OOB block 0\n"); return ret; } if (oob_buf[0] == ENV_OOB_MARKER) { - *result = oob_buf[1] * nand->erasesize; + *result = oob_buf[1] * mtd->erasesize; } else if (oob_buf[0] == ENV_OOB_MARKER_OLD) { *result = oob_buf[1]; } else { @@ -407,12 +390,12 @@ void env_relocate_spec(void) ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); #if defined(CONFIG_ENV_OFFSET_OOB) - ret = get_nand_env_oob(&nand_info[0], &nand_env_oob_offset); /* * If unable to read environment offset from NAND OOB then fall through * to the normal environment reading code below */ - if (!ret) { + if (nand_info[0] && !get_nand_env_oob(nand_info[0], + &nand_env_oob_offset)) { printf("Found Environment offset in OOB..\n"); } else { set_default_env("!no env offset in OOB");