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// 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 <command.h>
#include <env_internal.h>
#include <asm/global_data.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, H_EXTERNAL);
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 = {};
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),
};
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