SmartAudio/lichee/brandy/u-boot-2014.07/sprite/sprite_erase.c

/*
 * (C) Copyright 2007-2013
 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
 * Jerry Wang <wangflord@allwinnertech.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 <config.h>
#include <common.h>
#include <sunxi_mbr.h>
#include <sys_config.h>
#include "sprite_privatedata.h"
#include "sprite_verify.h"
#include <securestorage.h>
#include <fdt_support.h>
#include <sys_config_old.h>
#include <sunxi_board.h>


int sunxi_sprite_erase_flash(void  *img_mbr_buffer)
{
	uint32_t need_erase_flag = 0;
	int mbr_num = SUNXI_MBR_COPY_NUM;
	char buf[SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM];

	if (sunxi_sprite_erase(0, img_mbr_buffer) > 0) {
		printf("flash already erased\n");
		return 0;
	}

	uint32_t eraseonly_flag = 0;
	if(0 == script_parser_fetch("platform","eraseonly",(int *)&eraseonly_flag, 1))
	{
		if(1 == eraseonly_flag)
		{
			printf("\n*************** Force erase flash all!!! ***************\n\n");
			if(-1 == sunxi_sprite_erase(1,img_mbr_buffer))
			{
				printf("\n*************** Erase flash all fail ***************\n\n");
				__msdelay(50);
				sunxi_update_subsequent_processing(3);
				return -1;
			}
#ifdef CONFIG_SUNXI_SECURE_STORAGE
			if(0 == sunxi_secure_storage_init())
			{
				printf("Secure storage init 0k,begin to erase\n");
				if(0 == sunxi_secure_storage_erase_all())
				{
					printf("Erase secure storage all success!\n");
				}
				else
				{
					printf("Erase secure storage all fail!\n");
				}
				sunxi_secure_storage_exit();
			}
#endif
			printf("\n*************** Erase flash all success ***************\n\n");
			__msdelay(50);
			sunxi_update_subsequent_processing(3);
			return -1;
		}
	}

	if (0 != script_parser_fetch("platform", "eraseflag", (int *)&need_erase_flag, 1))
		printf("get eraseflag fail\n");

	if (need_erase_flag)
		printf("do need erase flash\n");
	else
		printf("not need erase flash\n");

	printf("%s, erase_flag=%u\n", __func__, need_erase_flag);
	if (need_erase_flag == 0x12) {
		printf("force erase all flash\n");
		sunxi_sprite_force_erase(1, img_mbr_buffer);
#ifdef CONFIG_SUNXI_SECURE_STORAGE
		sunxi_secure_storage_erase_all();
#endif
		return 0;
	}

	if (need_erase_flag == 0x11) {
		printf("force erase flash\n");
		sunxi_sprite_erase(1, img_mbr_buffer);
		return 0;
	}

	if (!sunxi_sprite_probe_prvt(img_mbr_buffer)) {
		printf("no part need to protect user data\n");
		sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
		return 0;
	}

	if (sunxi_sprite_init(1)) {
		debug("sunxi sprite pre init fail, we have to erase it\n");
		sunxi_sprite_exit(1);
		sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
		return 0;
	}

	if (get_boot_storage_type() == STORAGE_NOR)
		mbr_num = 1;

	if (sunxi_sprite_read_mbr(buf,  mbr_num)) {
		printf("read local mbr on flash failed\n");
		sunxi_sprite_exit(1);
		sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
		return 0;
	}

	if (sunxi_sprite_get_one_valid_mbr(buf, buf)) {
		printf("the mbr on flash is bad\n");
		sunxi_sprite_exit(1);
		sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
		return 0;
	}
	printf("begin to store data\n");
	if (sunxi_sprite_store_part_data(buf) < 0) {
		sunxi_sprite_exit(1);
		return -1;
	}
	sunxi_sprite_exit(1);
	printf("need_erase_flag = %u\n", need_erase_flag);
	printf("begin to erase\n");
	sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
	printf("finish erase\n");
	sunxi_sprite_init(0);
	printf("rewrite\n");
	if (sunxi_sprite_restore_part_data(img_mbr_buffer)) {
    	sunxi_sprite_exit(0);
    	return -1;
    }
	printf("flash exit\n");
	sunxi_sprite_exit(0);

    return 0;
}


int sunxi_sprite_force_erase_key(void)
{
	char buf[SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM];
	int mbr_num = SUNXI_MBR_COPY_NUM;

	if (sunxi_sprite_init(1)) {
		printf("sunxi sprite pre init fail\n");
		return -1;
	}

	if (get_boot_storage_type() == STORAGE_NOR)
		mbr_num = 1;

	if (sunxi_sprite_read_mbr(buf, mbr_num)) {
		printf("read local mbr on flash failed\n");
		sunxi_sprite_exit(1);
		return -1;
	}

	if (sunxi_sprite_verify_mbr(buf)) {
		printf("the mbr on flash is bad\n");
		sunxi_sprite_exit(1);
		return -1;
	}

	if (sunxi_sprite_erase_private_key(buf)) {
		printf("erase private key fail\n");
		return -1;
	}

#ifdef CONFIG_SUNXI_SECURE_STORAGE
	if (sunxi_secure_storage_init())
		return -1;
	if(sunxi_secure_storage_erase_all() == -1)
		return -1;
#endif
	printf("erase key success\n");
	return 0;
}