env_flash.c.svn-base

u-boot loader common files, like cpu, clock, environment...etc...

/*
 * (C) Copyright 2000-2002
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 *
 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Andreas Heppel <[e-mail]>

 * 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
 */

/* #define DEBUG */

#include <common.h>

#if defined(CFG_ENV_IS_IN_FLASH) /* Environment is in Flash */

#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <malloc.h>

#if (CONFIG_NAND_BOOT == 1)
#if CONFIG_S3C2410
#include <s3c2410.h>
#elif CONFIG_S3C2440
#include <s3c2440.h> 
/********added for s3c2443*220109**/
#elif CONFIG_S3C2443
#include <s3c2443.h>
/*********************************/
#endif
#endif

#if ((CONFIG_COMMANDS&(CFG_CMD_ENV|CFG_CMD_FLASH)) == (CFG_CMD_ENV|CFG_CMD_FLASH))
#define CMD_SAVEENV
#elif defined(CFG_ENV_ADDR_REDUND)
#error Cannot use CFG_ENV_ADDR_REDUND without CFG_CMD_ENV & CFG_CMD_FLASH
#endif

#if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND < CFG_ENV_SIZE)
#error CFG_ENV_SIZE_REDUND should not be less then CFG_ENV_SIZE
#endif

#ifdef CONFIG_INFERNO
# ifdef CFG_ENV_ADDR_REDUND
#error CFG_ENV_ADDR_REDUND is not implemented for CONFIG_INFERNO
# endif
#endif    /* Environment is in Flash */

char * env_name_spec = "Flash";
extern uchar environment[];
env_t *env_ptr;
extern flash_info_t flash_info[];
static env_t *flash_addr;
#if (CONFIG_MBA2440 == 1) 
static int amd_or_intel = 0;

#if (CONFIG_NAND_BOOT == 1)
env_t *temp_env_ptr = NULL;
static int nand_env_blk = -1;
static int blockPage = -1;
#endif
#endif
/********************s3c2443**************/
#if (CONFIG_smdk2443 == 1) 
static int amd_or_intel = 0;

#if (CONFIG_NAND_BOOT == 1)
env_t *temp_env_ptr = NULL;
static int nand_env_blk = -1;
static int blockPage = -1;
#endif
#endif
/*******************added by maddy220109*******/
/*
#ifdef ENV_IS_EMBEDDED
extern uchar environment[];
env_t *env_ptr = (env_t *)(&environment[0]);

#ifdef CMD_SAVEENV
// static env_t *flash_addr = (env_t *)(&environment[0]);-broken on ARM-wd-
static env_t *flash_addr = (env_t *)CFG_ENV_ADDR;
#endif

#else // ! ENV_IS_EMBEDDED

env_t *env_ptr = (env_t *)CFG_ENV_ADDR;
#ifdef CMD_SAVEENV
static env_t *flash_addr = (env_t *)CFG_ENV_ADDR;
#endif

#endif // ENV_IS_EMBEDDED
*/

#ifdef CFG_ENV_ADDR_REDUND
static env_t *flash_addr_new = (env_t *)CFG_ENV_ADDR_REDUND;

/* CFG_ENV_ADDR is supposed to be on sector boundary */
static ulong end_addr = CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1;
static ulong end_addr_new = CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1;

#define ACTIVE_FLAG   1
#define OBSOLETE_FLAG 0
#endif /* CFG_ENV_ADDR_REDUND */

extern uchar default_environment[];
extern int default_environment_size;

uchar env_get_char_spec (int index)
{
	DECLARE_GLOBAL_DATA_PTR;

	return ( *((uchar *)(gd->env_addr + index)) );
}

#ifdef CFG_ENV_ADDR_REDUND

int  env_init(void)
{
	DECLARE_GLOBAL_DATA_PTR;
	
	if( ((flash_info[0].flash_id & FLASH_TYPEMASK) == FLASH_AM400T) || \
		((flash_info[0].flash_id & FLASH_TYPEMASK) == FLASH_AM400B) || \
		((flash_info[0].flash_id & FLASH_TYPEMASK) == FLASH_AM800T) || \
        ((flash_info[0].flash_id & FLASH_TYPEMASK) == FLASH_AM800B)){
#ifdef ENV_IS_EMBEDDED
        env_ptr = (env_t *)(&environment[0]);
#ifdef CMD_SAVEENV
        flash_addr = (env_t *)AMD_CFG_ENV_ADDR;
#endif
#else
        env_ptr = (env_t *)AMD_CFG_ENV_ADDR;
#ifdef CMD_SAVEENV
        flash_addr = (env_t *)AMD_CFG_ENV_ADDR;
#endif
#endif
    }

	if( ((flash_info[0].flash_id & FLASH_TYPEMASK) == FLASH_28F320J3A) || \
        ((flash_info[0].flash_id & FLASH_TYPEMASK) == FLASH_28F320J3A) || \
		((flash_info[0].flash_id & FLASH_TYPEMASK) == FLASH_28F128J3A)){
#ifdef ENV_IS_EMBEDDED
        env_ptr = (env_t *)(&environment[0]); 
#ifdef CMD_SAVEENV
        flash_addr = (env_t *)INTEL_CFG_ENV_ADDR;
#endif
#else
        env_ptr = (env_t *)INTEL_CFG_ENV_ADDR;
#ifdef CMD_SAVEENV
        flash_addr = (env_t *)INTEL_CFG_ENV_ADDR;
#endif
#endif
    }

	{
		int crc1_ok =
			(crc32(0, flash_addr->data, ENV_SIZE) == flash_addr->crc);
		int crc2_ok =
			(crc32(0, flash_addr_new->data, ENV_SIZE) == flash_addr_new->crc);

		uchar flag1 = flash_addr->flags;
		uchar flag2 = flash_addr_new->flags;

		ulong addr_default = (ulong)&default_environment[0];
		ulong addr1 = (ulong)&(flash_addr->data);
		ulong addr2 = (ulong)&(flash_addr_new->data);
	
		if (crc1_ok && ! crc2_ok) {
			gd->env_addr  = addr1;
			gd->env_valid = 1;
		} else if (! crc1_ok && crc2_ok) {
			gd->env_addr  = addr2;
			gd->env_valid = 1;
		} else if (! crc1_ok && ! crc2_ok) {
			gd->env_addr  = addr_default;
			gd->env_valid = 0;
		} else if (flag1 == ACTIVE_FLAG && flag2 == OBSOLETE_FLAG) {
			gd->env_addr  = addr1;
			gd->env_valid = 1;
		} else if (flag1 == OBSOLETE_FLAG && flag2 == ACTIVE_FLAG) {
			gd->env_addr  = addr2;
			gd->env_valid = 1;
		} else if (flag1 == flag2) {
			gd->env_addr  = addr1;
			gd->env_valid = 2;
		} else if (flag1 == 0xFF) {
			gd->env_addr  = addr1;
			gd->env_valid = 2;
		} else if (flag2 == 0xFF) {
			gd->env_addr  = addr2;
			gd->env_valid = 2;
		}
	}

	return (0);
}

#ifdef CMD_SAVEENV
int saveenv(void)
{
	char *saved_data = NULL;
	int rc = 1;
	char flag = OBSOLETE_FLAG, new_flag = ACTIVE_FLAG;
#if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
	ulong up_data = 0;
#endif

	debug ("Protect off %08lX ... %08lX\n",
		(ulong)flash_addr, end_addr);

	if (flash_sect_protect (0, (ulong)flash_addr, end_addr)) {
		goto Done;
	}

	debug ("Protect off %08lX ... %08lX\n",
		(ulong)flash_addr_new, end_addr_new);

	if (flash_sect_protect (0, (ulong)flash_addr_new, end_addr_new)) {
		goto Done;
	}

#if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
	up_data = (end_addr_new + 1 - ((long)flash_addr_new + CFG_ENV_SIZE));
	debug ("Data to save 0x%x\n", up_data);
	if (up_data) {
		if ((saved_data = malloc(up_data)) == NULL) {
			printf("Unable to save the rest of sector (%ld)\n",
				up_data);
			goto Done;
		}
		memcpy(saved_data,
			(void *)((long)flash_addr_new + CFG_ENV_SIZE), up_data);
		debug ("Data (start 0x%x, len 0x%x) saved at 0x%x\n",
			   (long)flash_addr_new + CFG_ENV_SIZE,
				up_data, saved_data);
	}
#endif
	puts ("Erasing Flash...");
	debug (" %08lX ... %08lX ...",
		(ulong)flash_addr_new, end_addr_new);

	if (flash_sect_erase ((ulong)flash_addr_new, end_addr_new)) {
		goto Done;
	}

	puts ("Writing to Flash... ");
	debug (" %08lX ... %08lX ...",
		(ulong)&(flash_addr_new->data),
		sizeof(env_ptr->data)+(ulong)&(flash_addr_new->data));
/*
	if ((rc = flash_write(env_ptr->data,
			(ulong)&(flash_addr_new->data),
			sizeof(env_ptr->data))) ||
	    (rc = flash_write((char *)&(env_ptr->crc),
			(ulong)&(flash_addr_new->crc),
			sizeof(env_ptr->crc))) ||
	    (rc = flash_write(&flag,
			(ulong)&(flash_addr->flags),
			sizeof(flash_addr->flags))) ||
	    (rc = flash_write(&new_flag,
			(ulong)&(flash_addr_new->flags),
			sizeof(flash_addr_new->flags))))
*/
	if ((rc = flash_write(addr2info((ulong)&(flash_addr_new->data)), env_ptr->data,
						(ulong)&(flash_addr_new->data), sizeof(env_ptr->data))) ||
		(rc = flash_write(addr2info((ulong)&(flash_addr_new->crc)), (char *)&(env_ptr->crc),
						(ulong)&(flash_addr_new->crc), sizeof(env_ptr->crc))) ||
		(rc = flash_write(addr2info((ulong)&(flash_addr->flags)), &flag,
						(ulong)&(flash_addr->flags), sizeof(flash_addr->flags))) ||
		(rc = flash_write(addr2info((ulong)&(flash_addr_new->flags)), &new_flag,
						(ulong)&(flash_addr_new->flags), sizeof(flash_addr_new->flags))))
	{
		flash_perror (rc);
		goto Done;
	}
	puts ("done\n");

#if CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
	if (up_data) { /* restore the rest of sector */
		debug ("Restoring the rest of data to 0x%x len 0x%x\n",
			   (long)flash_addr_new + CFG_ENV_SIZE, up_data);
//		if (flash_write(saved_data,
//				(long)flash_addr_new + CFG_ENV_SIZE,
//				up_data)) {
		if (flash_write(addr2info((long)flash_addr_new + CFG_ENV_SIZE), saved_data, (long)flash_addr_new + CFG_ENV_SIZE,
				up_data)) {
			flash_perror(rc);