mirror of
https://github.com/AsahiLinux/u-boot
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2eb1573f01
The non-reentrant versions of the hashtable functions operate on a single shared hashtable. So if two different people try using these funcs for two different purposes, they'll cause problems for the other. Avoid this by converting all existing hashtable consumers over to the reentrant versions and then punting the non-reentrant ones. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
167 lines
3.6 KiB
C
167 lines
3.6 KiB
C
/*
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* (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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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 <mmc.h>
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#include <search.h>
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#include <errno.h>
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/* references to names in env_common.c */
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extern uchar default_environment[];
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char *env_name_spec = "MMC";
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#ifdef ENV_IS_EMBEDDED
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extern uchar environment[];
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env_t *env_ptr = (env_t *)(&environment[0]);
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#else /* ! ENV_IS_EMBEDDED */
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env_t *env_ptr = NULL;
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#endif /* ENV_IS_EMBEDDED */
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/* local functions */
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#if !defined(ENV_IS_EMBEDDED)
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static void use_default(void);
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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uchar env_get_char_spec(int index)
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{
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return *((uchar *)(gd->env_addr + index));
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}
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int env_init(void)
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{
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/* use default */
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gd->env_addr = (ulong)&default_environment[0];
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gd->env_valid = 1;
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return 0;
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}
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int init_mmc_for_env(struct mmc *mmc)
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{
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if (!mmc) {
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puts("No MMC card found\n");
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return -1;
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}
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if (mmc_init(mmc)) {
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puts("MMC init failed\n");
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return -1;
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}
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return 0;
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}
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#ifdef CONFIG_CMD_SAVEENV
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inline int write_env(struct mmc *mmc, unsigned long size,
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unsigned long offset, const void *buffer)
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{
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uint blk_start, blk_cnt, n;
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blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
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blk_cnt = ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len;
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n = mmc->block_dev.block_write(CONFIG_SYS_MMC_ENV_DEV, blk_start,
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blk_cnt, (u_char *)buffer);
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return (n == blk_cnt) ? 0 : -1;
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}
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int saveenv(void)
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{
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env_t env_new;
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ssize_t len;
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char *res;
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struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
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if (init_mmc_for_env(mmc))
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return 1;
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res = (char *)&env_new.data;
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len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
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if (len < 0) {
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error("Cannot export environment: errno = %d\n", errno);
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return 1;
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}
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env_new.crc = crc32(0, env_new.data, ENV_SIZE);
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printf("Writing to MMC(%d)... ", CONFIG_SYS_MMC_ENV_DEV);
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if (write_env(mmc, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, (u_char *)&env_new)) {
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puts("failed\n");
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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_CMD_SAVEENV */
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inline int read_env(struct mmc *mmc, unsigned long size,
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unsigned long offset, const void *buffer)
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{
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uint blk_start, blk_cnt, n;
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blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
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blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
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n = mmc->block_dev.block_read(CONFIG_SYS_MMC_ENV_DEV, blk_start,
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blk_cnt, (uchar *)buffer);
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return (n == blk_cnt) ? 0 : -1;
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}
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void env_relocate_spec(void)
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{
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#if !defined(ENV_IS_EMBEDDED)
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char buf[CONFIG_ENV_SIZE];
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struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
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if (init_mmc_for_env(mmc)) {
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use_default();
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return;
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}
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if (read_env(mmc, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, buf)) {
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use_default();
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return;
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}
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env_import(buf, 1);
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#endif
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}
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#if !defined(ENV_IS_EMBEDDED)
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static void use_default()
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{
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set_default_env(NULL);
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}
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#endif
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