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Move environment files from common/ to env/
About a quarter of the files in common/ relate to the environment. It seems better to put these into their own subdirectory and remove the prefix. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Simon Glass
Tom Rini
338
env/flash.c
vendored
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338
env/flash.c
vendored
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@@ -0,0 +1,338 @@
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/*
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* (C) Copyright 2000-2010
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Andreas Heppel <aheppel@sysgo.de>
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/* #define DEBUG */
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <linux/stddef.h>
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#include <malloc.h>
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#include <search.h>
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#include <errno.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_FLASH)
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#define CMD_SAVEENV
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#elif defined(CONFIG_ENV_ADDR_REDUND)
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#error CONFIG_ENV_ADDR_REDUND must have CONFIG_CMD_SAVEENV & CONFIG_CMD_FLASH
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#endif
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#if defined(CONFIG_ENV_SIZE_REDUND) && \
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(CONFIG_ENV_SIZE_REDUND < CONFIG_ENV_SIZE)
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#error CONFIG_ENV_SIZE_REDUND should not be less then CONFIG_ENV_SIZE
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#endif
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char *env_name_spec = "Flash";
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#ifdef ENV_IS_EMBEDDED
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env_t *env_ptr = &environment;
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static env_t *flash_addr = (env_t *)CONFIG_ENV_ADDR;
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#else /* ! ENV_IS_EMBEDDED */
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env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
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static env_t *flash_addr = (env_t *)CONFIG_ENV_ADDR;
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#endif /* ENV_IS_EMBEDDED */
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#if defined(CMD_SAVEENV) || defined(CONFIG_ENV_ADDR_REDUND)
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/* CONFIG_ENV_ADDR is supposed to be on sector boundary */
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static ulong end_addr = CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1;
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#endif
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#ifdef CONFIG_ENV_ADDR_REDUND
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static env_t *flash_addr_new = (env_t *)CONFIG_ENV_ADDR_REDUND;
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/* CONFIG_ENV_ADDR_REDUND is supposed to be on sector boundary */
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static ulong end_addr_new = CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1;
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#endif /* CONFIG_ENV_ADDR_REDUND */
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#ifdef CONFIG_ENV_ADDR_REDUND
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int env_init(void)
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{
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int crc1_ok = 0, crc2_ok = 0;
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uchar flag1 = flash_addr->flags;
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uchar flag2 = flash_addr_new->flags;
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ulong addr_default = (ulong)&default_environment[0];
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ulong addr1 = (ulong)&(flash_addr->data);
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ulong addr2 = (ulong)&(flash_addr_new->data);
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crc1_ok = crc32(0, flash_addr->data, ENV_SIZE) == flash_addr->crc;
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crc2_ok =
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crc32(0, flash_addr_new->data, ENV_SIZE) == flash_addr_new->crc;
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if (crc1_ok && !crc2_ok) {
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gd->env_addr = addr1;
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gd->env_valid = 1;
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} else if (!crc1_ok && crc2_ok) {
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gd->env_addr = addr2;
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gd->env_valid = 1;
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} else if (!crc1_ok && !crc2_ok) {
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gd->env_addr = addr_default;
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gd->env_valid = 0;
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} else if (flag1 == ACTIVE_FLAG && flag2 == OBSOLETE_FLAG) {
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gd->env_addr = addr1;
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gd->env_valid = 1;
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} else if (flag1 == OBSOLETE_FLAG && flag2 == ACTIVE_FLAG) {
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gd->env_addr = addr2;
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gd->env_valid = 1;
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} else if (flag1 == flag2) {
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gd->env_addr = addr1;
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gd->env_valid = 2;
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} else if (flag1 == 0xFF) {
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gd->env_addr = addr1;
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gd->env_valid = 2;
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} else if (flag2 == 0xFF) {
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gd->env_addr = addr2;
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gd->env_valid = 2;
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}
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return 0;
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}
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#ifdef CMD_SAVEENV
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int saveenv(void)
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{
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env_t env_new;
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char *saved_data = NULL;
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char flag = OBSOLETE_FLAG, new_flag = ACTIVE_FLAG;
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int rc = 1;
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#if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE
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ulong up_data = 0;
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#endif
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debug("Protect off %08lX ... %08lX\n", (ulong)flash_addr, end_addr);
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if (flash_sect_protect(0, (ulong)flash_addr, end_addr))
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goto done;
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debug("Protect off %08lX ... %08lX\n",
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(ulong)flash_addr_new, end_addr_new);
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if (flash_sect_protect(0, (ulong)flash_addr_new, end_addr_new))
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goto done;
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rc = env_export(&env_new);
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if (rc)
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return rc;
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env_new.flags = new_flag;
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#if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE
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up_data = end_addr_new + 1 - ((long)flash_addr_new + CONFIG_ENV_SIZE);
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debug("Data to save 0x%lX\n", up_data);
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if (up_data) {
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saved_data = malloc(up_data);
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if (saved_data == NULL) {
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printf("Unable to save the rest of sector (%ld)\n",
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up_data);
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goto done;
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}
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memcpy(saved_data,
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(void *)((long)flash_addr_new + CONFIG_ENV_SIZE),
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up_data);
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debug("Data (start 0x%lX, len 0x%lX) saved at 0x%p\n",
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(long)flash_addr_new + CONFIG_ENV_SIZE,
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up_data, saved_data);
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}
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#endif
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puts("Erasing Flash...");
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debug(" %08lX ... %08lX ...", (ulong)flash_addr_new, end_addr_new);
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if (flash_sect_erase((ulong)flash_addr_new, end_addr_new))
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goto done;
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puts("Writing to Flash... ");
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debug(" %08lX ... %08lX ...",
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(ulong)&(flash_addr_new->data),
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sizeof(env_ptr->data) + (ulong)&(flash_addr_new->data));
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rc = flash_write((char *)&env_new, (ulong)flash_addr_new,
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sizeof(env_new));
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if (rc)
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goto perror;
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rc = flash_write(&flag, (ulong)&(flash_addr->flags),
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sizeof(flash_addr->flags));
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if (rc)
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goto perror;
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#if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE
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if (up_data) { /* restore the rest of sector */
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debug("Restoring the rest of data to 0x%lX len 0x%lX\n",
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(long)flash_addr_new + CONFIG_ENV_SIZE, up_data);
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if (flash_write(saved_data,
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(long)flash_addr_new + CONFIG_ENV_SIZE,
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up_data))
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goto perror;
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}
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#endif
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puts("done\n");
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{
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env_t *etmp = flash_addr;
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ulong ltmp = end_addr;
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flash_addr = flash_addr_new;
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flash_addr_new = etmp;
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end_addr = end_addr_new;
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end_addr_new = ltmp;
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}
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rc = 0;
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goto done;
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perror:
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flash_perror(rc);
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done:
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if (saved_data)
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free(saved_data);
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/* try to re-protect */
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flash_sect_protect(1, (ulong)flash_addr, end_addr);
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flash_sect_protect(1, (ulong)flash_addr_new, end_addr_new);
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return rc;
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}
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#endif /* CMD_SAVEENV */
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#else /* ! CONFIG_ENV_ADDR_REDUND */
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int env_init(void)
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{
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if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
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gd->env_addr = (ulong)&(env_ptr->data);
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gd->env_valid = 1;
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return 0;
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}
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gd->env_addr = (ulong)&default_environment[0];
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gd->env_valid = 0;
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return 0;
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}
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#ifdef CMD_SAVEENV
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int saveenv(void)
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{
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env_t env_new;
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int rc = 1;
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char *saved_data = NULL;
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#if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE
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ulong up_data = 0;
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up_data = end_addr + 1 - ((long)flash_addr + CONFIG_ENV_SIZE);
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debug("Data to save 0x%lx\n", up_data);
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if (up_data) {
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saved_data = malloc(up_data);
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if (saved_data == NULL) {
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printf("Unable to save the rest of sector (%ld)\n",
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up_data);
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goto done;
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}
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memcpy(saved_data,
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(void *)((long)flash_addr + CONFIG_ENV_SIZE), up_data);
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debug("Data (start 0x%lx, len 0x%lx) saved at 0x%lx\n",
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(ulong)flash_addr + CONFIG_ENV_SIZE,
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up_data,
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(ulong)saved_data);
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}
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#endif /* CONFIG_ENV_SECT_SIZE */
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debug("Protect off %08lX ... %08lX\n", (ulong)flash_addr, end_addr);
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if (flash_sect_protect(0, (long)flash_addr, end_addr))
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goto done;
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rc = env_export(&env_new);
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if (rc)
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goto done;
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puts("Erasing Flash...");
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if (flash_sect_erase((long)flash_addr, end_addr))
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goto done;
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puts("Writing to Flash... ");
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rc = flash_write((char *)&env_new, (long)flash_addr, CONFIG_ENV_SIZE);
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if (rc != 0)
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goto perror;
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#if CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE
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if (up_data) { /* restore the rest of sector */
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debug("Restoring the rest of data to 0x%lx len 0x%lx\n",
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(ulong)flash_addr + CONFIG_ENV_SIZE, up_data);
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if (flash_write(saved_data,
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(long)flash_addr + CONFIG_ENV_SIZE,
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up_data))
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goto perror;
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}
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#endif
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puts("done\n");
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rc = 0;
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goto done;
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perror:
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flash_perror(rc);
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done:
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if (saved_data)
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free(saved_data);
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/* try to re-protect */
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flash_sect_protect(1, (long)flash_addr, end_addr);
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return rc;
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}
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#endif /* CMD_SAVEENV */
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#endif /* CONFIG_ENV_ADDR_REDUND */
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void env_relocate_spec(void)
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{
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#ifdef CONFIG_ENV_ADDR_REDUND
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if (gd->env_addr != (ulong)&(flash_addr->data)) {
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env_t *etmp = flash_addr;
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ulong ltmp = end_addr;
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flash_addr = flash_addr_new;
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flash_addr_new = etmp;
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end_addr = end_addr_new;
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end_addr_new = ltmp;
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}
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if (flash_addr_new->flags != OBSOLETE_FLAG &&
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crc32(0, flash_addr_new->data, ENV_SIZE) == flash_addr_new->crc) {
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char flag = OBSOLETE_FLAG;
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gd->env_valid = 2;
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flash_sect_protect(0, (ulong)flash_addr_new, end_addr_new);
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flash_write(&flag,
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(ulong)&(flash_addr_new->flags),
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sizeof(flash_addr_new->flags));
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flash_sect_protect(1, (ulong)flash_addr_new, end_addr_new);
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}
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if (flash_addr->flags != ACTIVE_FLAG &&
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(flash_addr->flags & ACTIVE_FLAG) == ACTIVE_FLAG) {
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char flag = ACTIVE_FLAG;
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gd->env_valid = 2;
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flash_sect_protect(0, (ulong)flash_addr, end_addr);
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flash_write(&flag,
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(ulong)&(flash_addr->flags),
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sizeof(flash_addr->flags));
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flash_sect_protect(1, (ulong)flash_addr, end_addr);
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}
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if (gd->env_valid == 2)
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puts("*** Warning - some problems detected "
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"reading environment; recovered successfully\n\n");
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#endif /* CONFIG_ENV_ADDR_REDUND */
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env_import((char *)flash_addr, 1);
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}
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