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dfe64e2c89
This patch is essentially an update of u-boot MTD subsystem to the state of Linux-3.7.1 with exclusion of some bits: - the update is concentrated on NAND, no onenand or CFI/NOR/SPI flashes interfaces are updated EXCEPT for API changes. - new large NAND chips support is there, though some updates have got in Linux-3.8.-rc1, (which will follow on top of this patch). To produce this update I used tag v3.7.1 of linux-stable repository. The update was made using application of relevant patches, with changes relevant to U-Boot-only stuff sticked together to keep bisectability. Then all changes were grouped together to this patch. Signed-off-by: Sergey Lapin <slapin@ossfans.org> [scottwood@freescale.com: some eccstrength and build fixes] Signed-off-by: Scott Wood <scottwood@freescale.com>
138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
/*
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* (C) Copyright 2010 DENX Software Engineering
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* Wolfgang Denk <wd@denx.de>
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*
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* (C) Copyright 2005-2009 Samsung Electronics
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* Kyungmin Park <kyungmin.park@samsung.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <linux/stddef.h>
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#include <malloc.h>
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#include <search.h>
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#include <errno.h>
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#include <onenand_uboot.h>
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#include <linux/compat.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/onenand.h>
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char *env_name_spec = "OneNAND";
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#define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
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#define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
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DECLARE_GLOBAL_DATA_PTR;
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void env_relocate_spec(void)
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{
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struct mtd_info *mtd = &onenand_mtd;
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#ifdef CONFIG_ENV_ADDR_FLEX
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struct onenand_chip *this = &onenand_chip;
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#endif
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int rc;
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size_t retlen;
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#ifdef ENV_IS_EMBEDDED
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char *buf = (char *)&environment;
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#else
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loff_t env_addr = CONFIG_ENV_ADDR;
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char onenand_env[ONENAND_MAX_ENV_SIZE];
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char *buf = (char *)&onenand_env[0];
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#endif /* ENV_IS_EMBEDDED */
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#ifndef ENV_IS_EMBEDDED
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# ifdef CONFIG_ENV_ADDR_FLEX
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if (FLEXONENAND(this))
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env_addr = CONFIG_ENV_ADDR_FLEX;
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# endif
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/* Check OneNAND exist */
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if (mtd->writesize)
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/* Ignore read fail */
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mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
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&retlen, (u_char *)buf);
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else
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mtd->writesize = MAX_ONENAND_PAGESIZE;
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#endif /* !ENV_IS_EMBEDDED */
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rc = env_import(buf, 1);
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if (rc)
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gd->env_valid = 1;
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}
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int saveenv(void)
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{
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env_t env_new;
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ssize_t len;
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char *res;
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struct mtd_info *mtd = &onenand_mtd;
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#ifdef CONFIG_ENV_ADDR_FLEX
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struct onenand_chip *this = &onenand_chip;
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#endif
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loff_t env_addr = CONFIG_ENV_ADDR;
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size_t retlen;
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struct erase_info instr = {
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.callback = NULL,
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};
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res = (char *)&env_new.data;
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len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
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if (len < 0) {
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error("Cannot export environment: errno = %d\n", errno);
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return 1;
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}
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env_new.crc = crc32(0, env_new.data, ENV_SIZE);
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instr.len = CONFIG_ENV_SIZE;
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#ifdef CONFIG_ENV_ADDR_FLEX
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if (FLEXONENAND(this)) {
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env_addr = CONFIG_ENV_ADDR_FLEX;
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instr.len = CONFIG_ENV_SIZE_FLEX;
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instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
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1 : 0;
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}
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#endif
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instr.addr = env_addr;
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instr.mtd = mtd;
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if (mtd_erase(mtd, &instr)) {
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printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
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return 1;
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}
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if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
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(u_char *)&env_new)) {
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printf("OneNAND: write failed at 0x%llx\n", instr.addr);
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return 2;
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}
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return 0;
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}
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int env_init(void)
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{
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/* use default */
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gd->env_addr = (ulong)&default_environment[0];
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gd->env_valid = 1;
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return 0;
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}
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