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/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Ulf Hansson <ulf.hansson@stericsson.com> for
* ST-Ericsson
*
* License terms: GNU General Public License (GPL), version 2.
*/
#include <common.h>
#include <environment.h>
#include <part.h>
#include <mmc.h>
#include <asm/arch/cpu.h>
DECLARE_GLOBAL_DATA_PTR;
/* global var allocated in env_common when doing env_relocate */
env_t *env_ptr = 0;
/* global var used from cmd_nvedit when saveenv */
char *env_name_spec = "EMMC";
/* global funtion used from env_common */
uchar env_get_char_spec(int index)
{
return ( *((uchar *)(gd->env_addr + index)) );
}
/* global function called before mmc_initialize */
int env_init(void)
{
set_default_env();
return 0;
}
/* global function called from cmd_nvedit */
#ifdef CONFIG_CMD_SAVEENV
int saveenv(void)
{
int ret;
struct mmc *mmc_dev;
u32 offset;
u32 size;
u32 loadaddr;
u32 blkcnt;
printf("Writing to EMMC... ");
mmc_dev = find_mmc_device(CONFIG_EMMC_DEV_NUM);
if (!mmc_dev) {
printf("emmc device not found, so env not saved!\n");
return 1;
}
ret = get_entry_info_toc(&mmc_dev->block_dev,
CONFIG_ENV_TOC_NAME,
&offset,
&size,
&loadaddr);
if (ret) {
printf("env address not found, so env not saved!\n");
return 1;
}
if (size != CONFIG_ENV_SIZE) {
if (u8500_is_snowball()) {
size = CONFIG_ENV_SIZE;
} else {
printf("env size mismatch, so env not saved!\n");
return 1;
}
}
env_crc_update();
blkcnt = (size + mmc_dev->write_bl_len - 1) / mmc_dev->write_bl_len;
ret = mmc_dev->block_dev.block_write(mmc_dev->block_dev.dev,
offset / mmc_dev->write_bl_len,
blkcnt,
(void *)env_ptr);
if (ret != blkcnt) {
printf("env write failed, so env not saved!\n");
return 1;
}
printf("done\n");
return 0;
}
#endif
/* global function called from env_common when doing env_relocate */
void env_relocate_spec (void)
{
int ret;
struct mmc *mmc_dev;
u32 offset;
u32 size;
u32 loadaddr;
u32 blkcnt;
mmc_dev = find_mmc_device(CONFIG_EMMC_DEV_NUM);
if (!mmc_dev) {
printf("env emmc device not found, so setting default env!\n");
goto err;
}
ret = get_entry_info_toc(&mmc_dev->block_dev,
CONFIG_ENV_TOC_NAME,
&offset,
&size,
&loadaddr);
if (ret) {
printf("env not found, so setting default env!\n");
goto err;
}
if (size != CONFIG_ENV_SIZE) {
if (u8500_is_snowball()) {
size = CONFIG_ENV_SIZE;
} else {
printf("env size mismatch, so setting default env!\n");
goto err;
}
}
blkcnt = (size + mmc_dev->read_bl_len - 1) / mmc_dev->read_bl_len;
ret = mmc_dev->block_dev.block_read(mmc_dev->block_dev.dev,
offset / mmc_dev->read_bl_len,
blkcnt,
(void *)env_ptr);
if (ret != blkcnt) {
printf("env read failed, so setting default env!\n");
goto err;
}
if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc) {
printf("env crc failed, so setting default env!\n");
goto err;
}
return;
err:
set_default_env();
}
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