mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-30 22:08:52 +09:00
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/*
|
|
* (C) Copyright 2005-2007 Samsung Electronics
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <environment.h>
|
|
#include <linux/stddef.h>
|
|
#include <malloc.h>
|
|
|
|
#include <linux/mtd/compat.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/onenand.h>
|
|
|
|
extern struct mtd_info onenand_mtd;
|
|
extern struct onenand_chip onenand_chip;
|
|
|
|
/* References to names in env_common.c */
|
|
extern uchar default_environment[];
|
|
|
|
#define ONENAND_ENV_SIZE(mtd) (mtd.writesize - ENV_HEADER_SIZE)
|
|
|
|
char *env_name_spec = "OneNAND";
|
|
|
|
#ifdef ENV_IS_EMBEDDED
|
|
extern uchar environment[];
|
|
env_t *env_ptr = (env_t *) (&environment[0]);
|
|
#else /* ! ENV_IS_EMBEDDED */
|
|
static unsigned char onenand_env[MAX_ONENAND_PAGESIZE];
|
|
env_t *env_ptr = (env_t *) onenand_env;
|
|
#endif /* ENV_IS_EMBEDDED */
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
uchar env_get_char_spec(int index)
|
|
{
|
|
return (*((uchar *) (gd->env_addr + index)));
|
|
}
|
|
|
|
void env_relocate_spec(void)
|
|
{
|
|
unsigned long env_addr;
|
|
int use_default = 0;
|
|
size_t retlen;
|
|
|
|
env_addr = CONFIG_ENV_ADDR;
|
|
|
|
/* Check OneNAND exist */
|
|
if (onenand_mtd.writesize)
|
|
/* Ignore read fail */
|
|
onenand_read(&onenand_mtd, env_addr, onenand_mtd.writesize,
|
|
&retlen, (u_char *) env_ptr);
|
|
else
|
|
onenand_mtd.writesize = MAX_ONENAND_PAGESIZE;
|
|
|
|
if (crc32(0, env_ptr->data, ONENAND_ENV_SIZE(onenand_mtd)) !=
|
|
env_ptr->crc)
|
|
use_default = 1;
|
|
|
|
if (use_default) {
|
|
memcpy(env_ptr->data, default_environment,
|
|
ONENAND_ENV_SIZE(onenand_mtd));
|
|
env_ptr->crc =
|
|
crc32(0, env_ptr->data, ONENAND_ENV_SIZE(onenand_mtd));
|
|
}
|
|
|
|
gd->env_addr = (ulong) & env_ptr->data;
|
|
gd->env_valid = 1;
|
|
}
|
|
|
|
int saveenv(void)
|
|
{
|
|
unsigned long env_addr = CONFIG_ENV_ADDR;
|
|
struct erase_info instr = {
|
|
.callback = NULL,
|
|
};
|
|
size_t retlen;
|
|
|
|
instr.len = CONFIG_ENV_SIZE;
|
|
instr.addr = env_addr;
|
|
if (onenand_erase(&onenand_mtd, &instr)) {
|
|
printf("OneNAND: erase failed at 0x%08lx\n", env_addr);
|
|
return 1;
|
|
}
|
|
|
|
/* update crc */
|
|
env_ptr->crc =
|
|
crc32(0, env_ptr->data, ONENAND_ENV_SIZE(onenand_mtd));
|
|
|
|
if (onenand_write(&onenand_mtd, env_addr, onenand_mtd.writesize, &retlen,
|
|
(u_char *) env_ptr)) {
|
|
printf("OneNAND: write failed at 0x%08x\n", instr.addr);
|
|
return 2;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int env_init(void)
|
|
{
|
|
/* use default */
|
|
gd->env_addr = (ulong) & default_environment[0];
|
|
gd->env_valid = 1;
|
|
|
|
return 0;
|
|
}
|