170 lines
3.7 KiB
C
170 lines
3.7 KiB
C
/*
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* (C) Copyright 2007-2011
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Tom Cubie <tangliang@allwinnertech.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 <mmc.h>
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#include <search.h>
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#include <errno.h>
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#include <nand.h>
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#ifdef CONFIG_ALLWINNER
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#include <boot_type.h>
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#include <sys_partition.h>
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#endif
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char * env_name_spec = "SUNXI";
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#ifdef ENV_IS_EMBEDDED
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env_t *env_ptr = &environment;
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#else /* ! ENV_IS_EMBEDDED */
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env_t *env_ptr;
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#endif /* ENV_IS_EMBEDDED */
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/* local functions */
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#if !defined(ENV_IS_EMBEDDED)
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static void use_default(void);
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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const uchar sunxi_sprite_environment[] = {
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#ifdef CONFIG_SUNXI_SPRITE_ENV_SETTINGS
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CONFIG_SUNXI_SPRITE_ENV_SETTINGS
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#endif
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"\0"
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};
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#if !defined(CONFIG_ENV_OFFSET)
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#define CONFIG_ENV_OFFSET 0
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#endif
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//loff_t env_offset = (loff_t)CONFIG_ENV_ADDR;
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size_t env_size = (size_t)CONFIG_ENV_SIZE;
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uchar env_get_char_spec(int index)
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{
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return ( *((uchar *)(gd->env_addr + index)) );
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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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#ifdef CONFIG_ENV_OFFSET_REDUND
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#error No support for redundant environment on sunxi nand yet!
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#endif
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static void flash_use_efex_env(void)
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{
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if (himport_r(&env_htab, (char *)sunxi_sprite_environment,
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sizeof(sunxi_sprite_environment), '\0', H_INTERACTIVE,
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0, NULL) == 0) {
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error("Environment import failed: errno = %d\n", errno);
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}
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gd->flags |= GD_FLG_ENV_READY;
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return ;
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}
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int saveenv(void)
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{
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ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
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int ret;
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u32 start;
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printf("saveenv storage_type = %d\n", uboot_spare_head.boot_data.storage_type);
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start = sunxi_partition_get_offset_byname(CONFIG_SUNXI_ENV_PARTITION);
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if(!start){
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printf("fail to find part named %s\n", CONFIG_SUNXI_ENV_PARTITION);
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return -1;
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}
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ret = env_export(env_new);
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if(ret)
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goto fini;
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return sunxi_flash_write(start, CONFIG_ENV_SIZE/512, &env_new);
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fini:
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return ret;
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}
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static void flash_env_relocate_spec(int workmode)
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{
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#if !defined(ENV_IS_EMBEDDED)
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char buf[CONFIG_ENV_SIZE];
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u32 start;
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if((workmode & WORK_MODE_PRODUCT) && (!(workmode & WORK_MODE_UPDATE)))
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{
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flash_use_efex_env();
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}
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else
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{
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start = sunxi_partition_get_offset_byname(CONFIG_SUNXI_ENV_PARTITION);
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if(!start){
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printf("fail to find part named %s\n", CONFIG_SUNXI_ENV_PARTITION);
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use_default();
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return;
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}
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if(!sunxi_flash_read(start, CONFIG_ENV_SIZE/512, buf))
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{
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use_default();
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return;
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}
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env_import(buf, 1);
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}
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#endif
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}
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void env_relocate_spec(void)
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{
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debug("env_relocate_spec storage_type = %d\n", uboot_spare_head.boot_data.storage_type);
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flash_env_relocate_spec(uboot_spare_head.boot_data.work_mode);
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}
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#if !defined(ENV_IS_EMBEDDED)
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static void use_default()
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{
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set_default_env(NULL);
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}
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#endif
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/*
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* This is called before nand_init() so we can't read NAND to
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* validate env data.
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*/
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