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![Simon Glass](/assets/img/avatar_default.png)
This file contains lots of internal details about the environment. Most code can include env.h instead, calling the functions there as needed. Rename this file and add a comment at the top to indicate its internal nature. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> [trini: Fixup apalis-tk1.c] Signed-off-by: Tom Rini <trini@konsulko.com>
185 lines
4.8 KiB
C
185 lines
4.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (c) Copyright 2012 by National Instruments,
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* Joe Hershberger <joe.hershberger@ni.com>
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*/
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#include <common.h>
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#include <command.h>
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#include <env.h>
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#include <env_internal.h>
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#include <errno.h>
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#include <malloc.h>
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#include <memalign.h>
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#include <search.h>
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#include <ubi_uboot.h>
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#undef crc32
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#define _QUOTE(x) #x
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#define QUOTE(x) _QUOTE(x)
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#if (CONFIG_ENV_UBI_VID_OFFSET == 0)
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#define UBI_VID_OFFSET NULL
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#else
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#define UBI_VID_OFFSET QUOTE(CONFIG_ENV_UBI_VID_OFFSET)
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_CMD_SAVEENV
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#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
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static int env_ubi_save(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
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int ret;
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ret = env_export(env_new);
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if (ret)
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return ret;
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if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) {
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printf("\n** Cannot find mtd partition \"%s\"\n",
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CONFIG_ENV_UBI_PART);
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return 1;
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}
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if (gd->env_valid == ENV_VALID) {
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puts("Writing to redundant UBI... ");
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if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND,
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(void *)env_new, CONFIG_ENV_SIZE)) {
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printf("\n** Unable to write env to %s:%s **\n",
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CONFIG_ENV_UBI_PART,
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CONFIG_ENV_UBI_VOLUME_REDUND);
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return 1;
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}
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} else {
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puts("Writing to UBI... ");
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if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME,
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(void *)env_new, CONFIG_ENV_SIZE)) {
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printf("\n** Unable to write env to %s:%s **\n",
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CONFIG_ENV_UBI_PART,
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CONFIG_ENV_UBI_VOLUME);
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return 1;
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}
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}
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puts("done\n");
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gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
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return 0;
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}
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#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
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static int env_ubi_save(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
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int ret;
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ret = env_export(env_new);
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if (ret)
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return ret;
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if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) {
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printf("\n** Cannot find mtd partition \"%s\"\n",
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CONFIG_ENV_UBI_PART);
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return 1;
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}
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if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new,
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CONFIG_ENV_SIZE)) {
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printf("\n** Unable to write env to %s:%s **\n",
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CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
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return 1;
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}
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puts("done\n");
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return 0;
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}
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#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
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#endif /* CONFIG_CMD_SAVEENV */
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#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
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static int env_ubi_load(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE);
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ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE);
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int read1_fail, read2_fail;
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env_t *tmp_env1, *tmp_env2;
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/*
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* In case we have restarted u-boot there is a chance that buffer
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* contains old environment (from the previous boot).
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* If UBI volume is zero size, ubi_volume_read() doesn't modify the
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* buffer.
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* We need to clear buffer manually here, so the invalid CRC will
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* cause setting default environment as expected.
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*/
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memset(env1_buf, 0x0, CONFIG_ENV_SIZE);
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memset(env2_buf, 0x0, CONFIG_ENV_SIZE);
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tmp_env1 = (env_t *)env1_buf;
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tmp_env2 = (env_t *)env2_buf;
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if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) {
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printf("\n** Cannot find mtd partition \"%s\"\n",
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CONFIG_ENV_UBI_PART);
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env_set_default(NULL, 0);
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return -EIO;
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}
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read1_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1,
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CONFIG_ENV_SIZE);
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if (read1_fail)
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printf("\n** Unable to read env from %s:%s **\n",
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CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
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read2_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND,
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(void *)tmp_env2, CONFIG_ENV_SIZE);
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if (read2_fail)
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printf("\n** Unable to read redundant env from %s:%s **\n",
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CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);
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return env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
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read2_fail);
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}
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#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
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static int env_ubi_load(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
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/*
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* In case we have restarted u-boot there is a chance that buffer
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* contains old environment (from the previous boot).
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* If UBI volume is zero size, ubi_volume_read() doesn't modify the
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* buffer.
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* We need to clear buffer manually here, so the invalid CRC will
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* cause setting default environment as expected.
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*/
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memset(buf, 0x0, CONFIG_ENV_SIZE);
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if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) {
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printf("\n** Cannot find mtd partition \"%s\"\n",
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CONFIG_ENV_UBI_PART);
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env_set_default(NULL, 0);
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return -EIO;
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}
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if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, CONFIG_ENV_SIZE)) {
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printf("\n** Unable to read env from %s:%s **\n",
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CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
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env_set_default(NULL, 0);
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return -EIO;
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}
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return env_import(buf, 1);
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}
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#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
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U_BOOT_ENV_LOCATION(ubi) = {
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.location = ENVL_UBI,
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ENV_NAME("UBI")
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.load = env_ubi_load,
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.save = env_save_ptr(env_ubi_save),
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};
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