mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-29 15:43:44 +08:00
bf95df44ff
env_get_char_spec() function is duplicated across multiple environment files. Remove the duplication by providing a default implementation. Add "weak" declaration, so the default implementation can be overridden. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
156 lines
3.6 KiB
C
156 lines
3.6 KiB
C
/*
|
|
* (C) Copyright 2008-2011 Freescale Semiconductor, Inc.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/* #define DEBUG */
|
|
|
|
#include <common.h>
|
|
|
|
#include <command.h>
|
|
#include <environment.h>
|
|
#include <linux/stddef.h>
|
|
#include <malloc.h>
|
|
#include <mmc.h>
|
|
#include <search.h>
|
|
#include <errno.h>
|
|
|
|
char *env_name_spec = "MMC";
|
|
|
|
#ifdef ENV_IS_EMBEDDED
|
|
env_t *env_ptr = &environment;
|
|
#else /* ! ENV_IS_EMBEDDED */
|
|
env_t *env_ptr;
|
|
#endif /* ENV_IS_EMBEDDED */
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#if !defined(CONFIG_ENV_OFFSET)
|
|
#define CONFIG_ENV_OFFSET 0
|
|
#endif
|
|
|
|
static int __mmc_get_env_addr(struct mmc *mmc, u32 *env_addr)
|
|
{
|
|
*env_addr = CONFIG_ENV_OFFSET;
|
|
return 0;
|
|
}
|
|
int mmc_get_env_addr(struct mmc *mmc, u32 *env_addr)
|
|
__attribute__((weak, alias("__mmc_get_env_addr")));
|
|
|
|
int env_init(void)
|
|
{
|
|
/* use default */
|
|
gd->env_addr = (ulong)&default_environment[0];
|
|
gd->env_valid = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int init_mmc_for_env(struct mmc *mmc)
|
|
{
|
|
if (!mmc) {
|
|
puts("No MMC card found\n");
|
|
return -1;
|
|
}
|
|
|
|
if (mmc_init(mmc)) {
|
|
puts("MMC init failed\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_CMD_SAVEENV
|
|
static inline int write_env(struct mmc *mmc, unsigned long size,
|
|
unsigned long offset, const void *buffer)
|
|
{
|
|
uint blk_start, blk_cnt, n;
|
|
|
|
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 = mmc->block_dev.block_write(CONFIG_SYS_MMC_ENV_DEV, blk_start,
|
|
blk_cnt, (u_char *)buffer);
|
|
|
|
return (n == blk_cnt) ? 0 : -1;
|
|
}
|
|
|
|
int saveenv(void)
|
|
{
|
|
env_t env_new;
|
|
ssize_t len;
|
|
char *res;
|
|
struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
|
|
u32 offset;
|
|
|
|
if (init_mmc_for_env(mmc) || mmc_get_env_addr(mmc, &offset))
|
|
return 1;
|
|
|
|
res = (char *)&env_new.data;
|
|
len = hexport_r(&env_htab, '\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);
|
|
printf("Writing to MMC(%d)... ", CONFIG_SYS_MMC_ENV_DEV);
|
|
if (write_env(mmc, CONFIG_ENV_SIZE, offset, (u_char *)&env_new)) {
|
|
puts("failed\n");
|
|
return 1;
|
|
}
|
|
|
|
puts("done\n");
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_CMD_SAVEENV */
|
|
|
|
static inline int read_env(struct mmc *mmc, unsigned long size,
|
|
unsigned long offset, const void *buffer)
|
|
{
|
|
uint blk_start, blk_cnt, n;
|
|
|
|
blk_start = ALIGN(offset, mmc->read_bl_len) / mmc->read_bl_len;
|
|
blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
|
|
|
|
n = mmc->block_dev.block_read(CONFIG_SYS_MMC_ENV_DEV, blk_start,
|
|
blk_cnt, (uchar *)buffer);
|
|
|
|
return (n == blk_cnt) ? 0 : -1;
|
|
}
|
|
|
|
void env_relocate_spec(void)
|
|
{
|
|
#if !defined(ENV_IS_EMBEDDED)
|
|
char buf[CONFIG_ENV_SIZE];
|
|
struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
|
|
u32 offset;
|
|
|
|
if (init_mmc_for_env(mmc) || mmc_get_env_addr(mmc, &offset))
|
|
return set_default_env(NULL);
|
|
|
|
if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf))
|
|
return set_default_env(NULL);
|
|
|
|
env_import(buf, 1);
|
|
#endif
|
|
}
|