mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
This file contains lots of internal details about the environment. Most code can include env.h instead, calling the functions there as needed. Rename this file and add a comment at the top to indicate its internal nature. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> [trini: Fixup apalis-tk1.c] Signed-off-by: Tom Rini <trini@konsulko.com>
114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2010 DENX Software Engineering
|
|
* Wolfgang Denk <wd@denx.de>
|
|
*
|
|
* (C) Copyright 2005-2009 Samsung Electronics
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <env_internal.h>
|
|
#include <linux/stddef.h>
|
|
#include <malloc.h>
|
|
#include <search.h>
|
|
#include <errno.h>
|
|
#include <onenand_uboot.h>
|
|
|
|
#include <linux/compat.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/onenand.h>
|
|
|
|
#define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
|
|
#define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static int env_onenand_load(void)
|
|
{
|
|
struct mtd_info *mtd = &onenand_mtd;
|
|
#ifdef CONFIG_ENV_ADDR_FLEX
|
|
struct onenand_chip *this = &onenand_chip;
|
|
#endif
|
|
int rc;
|
|
size_t retlen;
|
|
#ifdef ENV_IS_EMBEDDED
|
|
char *buf = (char *)&environment;
|
|
#else
|
|
loff_t env_addr = CONFIG_ENV_ADDR;
|
|
char onenand_env[ONENAND_MAX_ENV_SIZE];
|
|
char *buf = (char *)&onenand_env[0];
|
|
#endif /* ENV_IS_EMBEDDED */
|
|
|
|
#ifndef ENV_IS_EMBEDDED
|
|
# ifdef CONFIG_ENV_ADDR_FLEX
|
|
if (FLEXONENAND(this))
|
|
env_addr = CONFIG_ENV_ADDR_FLEX;
|
|
# endif
|
|
/* Check OneNAND exist */
|
|
if (mtd->writesize)
|
|
/* Ignore read fail */
|
|
mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
|
|
&retlen, (u_char *)buf);
|
|
else
|
|
mtd->writesize = MAX_ONENAND_PAGESIZE;
|
|
#endif /* !ENV_IS_EMBEDDED */
|
|
|
|
rc = env_import(buf, 1);
|
|
if (!rc)
|
|
gd->env_valid = ENV_VALID;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int env_onenand_save(void)
|
|
{
|
|
env_t env_new;
|
|
int ret;
|
|
struct mtd_info *mtd = &onenand_mtd;
|
|
#ifdef CONFIG_ENV_ADDR_FLEX
|
|
struct onenand_chip *this = &onenand_chip;
|
|
#endif
|
|
loff_t env_addr = CONFIG_ENV_ADDR;
|
|
size_t retlen;
|
|
struct erase_info instr = {
|
|
.callback = NULL,
|
|
};
|
|
|
|
ret = env_export(&env_new);
|
|
if (ret)
|
|
return ret;
|
|
|
|
instr.len = CONFIG_ENV_SIZE;
|
|
#ifdef CONFIG_ENV_ADDR_FLEX
|
|
if (FLEXONENAND(this)) {
|
|
env_addr = CONFIG_ENV_ADDR_FLEX;
|
|
instr.len = CONFIG_ENV_SIZE_FLEX;
|
|
instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
|
|
1 : 0;
|
|
}
|
|
#endif
|
|
instr.addr = env_addr;
|
|
instr.mtd = mtd;
|
|
if (mtd_erase(mtd, &instr)) {
|
|
printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
|
|
return 1;
|
|
}
|
|
|
|
if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
|
|
(u_char *)&env_new)) {
|
|
printf("OneNAND: write failed at 0x%llx\n", instr.addr);
|
|
return 2;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_ENV_LOCATION(onenand) = {
|
|
.location = ENVL_ONENAND,
|
|
ENV_NAME("OneNAND")
|
|
.load = env_onenand_load,
|
|
.save = env_save_ptr(env_onenand_save),
|
|
};
|