flash_common.c

来自「s3c6410的 Uboot 代码, 感兴趣的可以看看呀」· C语言 代码 · 共 627 行 · 第 1/2 页

/*
 * (C) Copyright 2004-2005
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 *
 * (C) Copyright 2002 Jun Gu <[e-mail]>
 * Add support for Am29F016D and dynamic switch setting.
 *
 * 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
 */

/*
 * Modified 4/5/2001
 * Wait for completion of each sector erase command issued
 * 4/5/2001
 * Chris Hallinan - DS4.COM, Inc. - [e-mail]
 */

#include <common.h>

#undef DEBUG_FLASH
#ifdef DEBUG_FLASH
#define DEBUGF(fmt,args...) printf(fmt ,##args)
#else
#define DEBUGF(fmt,args...)
#endif


flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips        */

/*-----------------------------------------------------------------------
 * Functions
 */
static int write_word(flash_info_t * info, ulong dest, ulong data);

void flash_print_info(flash_info_t * info)
{
	int i;
	int k;
	int size;
	int erased;
	volatile unsigned long *flash;

	if (info->flash_id == FLASH_UNKNOWN) {
		printf("missing or unknown FLASH type\n");
		return;
	}

	switch (info->flash_id & FLASH_VENDMASK) {
	case FLASH_MAN_AMD:
		printf("AMD ");
		break;
	case FLASH_MAN_STM:
		printf("STM ");
		break;
	case FLASH_MAN_FUJ:
		printf("FUJITSU ");
		break;
	case FLASH_MAN_SST:
		printf("SST ");
		break;
	case FLASH_MAN_MX:
		printf("MACRONIX ");
		break;
	default:
		printf("Unknown Vendor ");
		break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case FLASH_AM040:
		printf("AM29F040 (512 Kbit, uniform sector size)\n");
		break;
	case FLASH_AM400B:
		printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
		break;
	case FLASH_AM400T:
		printf("AM29LV400T (4 Mbit, top boot sector)\n");
		break;
	case FLASH_AM800B:
		printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
		break;
	case FLASH_AM800T:
		printf("AM29LV800T (8 Mbit, top boot sector)\n");
		break;
	case FLASH_AMD016:
		printf("AM29F016D (16 Mbit, uniform sector size)\n");
		break;
	case FLASH_AM160B:
		printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
		break;
	case FLASH_AM160T:
		printf("AM29LV160T (16 Mbit, top boot sector)\n");
		break;
	case FLASH_AM320B:
		printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
		break;
	case FLASH_AM320T:
		printf("AM29LV320T (32 Mbit, top boot sector)\n");
		break;
	case FLASH_AM033C:
		printf("AM29LV033C (32 Mbit, top boot sector)\n");
		break;
	case FLASH_SST800A:
		printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
		break;
	case FLASH_SST160A:
		printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
		break;
	case FLASH_STMW320DT:
		printf ("M29W320DT (32 M, top sector)\n");
		break;
	case FLASH_MXLV320T:
		printf ("MXLV320T (32 Mbit, top sector)\n");
		break;
	case FLASH_MXLV320B:
		printf ("MXLV320B (32 Mbit, bottom sector)\n");
		break;
	default:
		printf("Unknown Chip Type\n");
		break;
	}

	printf("  Size: %ld KB in %d Sectors\n",
	       info->size >> 10, info->sector_count);

	printf("  Sector Start Addresses:");
	for (i = 0; i < info->sector_count; ++i) {
		/*
		 * Check if whole sector is erased
		 */
		if (i != (info->sector_count - 1))
			size = info->start[i + 1] - info->start[i];
		else
			size = info->start[0] + info->size - info->start[i];
		erased = 1;
		flash = (volatile unsigned long *)info->start[i];
		size = size >> 2;	/* divide by 4 for longword access */
		for (k = 0; k < size; k++) {
			if (*flash++ != 0xffffffff) {
				erased = 0;
				break;
			}
		}

		if ((i % 5) == 0)
			printf("\n   ");
		printf(" %08lX%s%s", info->start[i],
		       erased ? " E" : "  ", info->protect[i] ? "RO " : "   ");
	}
	printf("\n");
	return;
}


/*
 * The following code cannot be run from FLASH!
 */
static ulong flash_get_size(vu_long * addr, flash_info_t * info)
{
	short i;
	CFG_FLASH_WORD_SIZE value;
	ulong base = (ulong) addr;
	volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;

	DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);

	/* Write auto select command: read Manufacturer ID */
	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
	addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;
	udelay(1000);

	value = addr2[0];
	DEBUGF("FLASH MANUFACT: %x\n", value);

	switch (value) {
	case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
		info->flash_id = FLASH_MAN_AMD;
		break;
	case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT:
		info->flash_id = FLASH_MAN_FUJ;
		break;
	case (CFG_FLASH_WORD_SIZE) SST_MANUFACT:
		info->flash_id = FLASH_MAN_SST;
		break;
	case (CFG_FLASH_WORD_SIZE) STM_MANUFACT:
		info->flash_id = FLASH_MAN_STM;
		break;
	case (CFG_FLASH_WORD_SIZE) MX_MANUFACT:
		info->flash_id = FLASH_MAN_MX;
		break;
	default:
		info->flash_id = FLASH_UNKNOWN;
		info->sector_count = 0;
		info->size = 0;
		return (0);	/* no or unknown flash  */
	}

	value = addr2[1];	/* device ID	*/
	DEBUGF("\nFLASH DEVICEID: %x\n", value);

	switch (value) {
	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV040B:
		info->flash_id += FLASH_AM040;
		info->sector_count = 8;
		info->size = 0x0080000;	/* => 512 ko */
		break;

	case (CFG_FLASH_WORD_SIZE) AMD_ID_F040B:
		info->flash_id += FLASH_AM040;
		info->sector_count = 8;
		info->size = 0x0080000;	/* => 512 ko */
		break;

	case (CFG_FLASH_WORD_SIZE) STM_ID_M29W040B:
		info->flash_id += FLASH_AM040;
		info->sector_count = 8;
		info->size = 0x0080000;	/* => 512 ko */
		break;

	case (CFG_FLASH_WORD_SIZE) AMD_ID_F016D:
		info->flash_id += FLASH_AMD016;
		info->sector_count = 32;
		info->size = 0x00200000;
		break;		/* => 2 MB	*/

	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV033C:
		info->flash_id += FLASH_AMDLV033C;
		info->sector_count = 64;
		info->size = 0x00400000;
		break;		/* => 4 MB	*/

	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV400T:
		info->flash_id += FLASH_AM400T;
		info->sector_count = 11;
		info->size = 0x00080000;
		break;		/* => 0.5 MB	*/

	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV400B:
		info->flash_id += FLASH_AM400B;
		info->sector_count = 11;
		info->size = 0x00080000;
		break;		/* => 0.5 MB	*/

	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800T:
		info->flash_id += FLASH_AM800T;
		info->sector_count = 19;
		info->size = 0x00100000;
		break;		/* => 1 MB	*/

	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800B:
		info->flash_id += FLASH_AM800B;
		info->sector_count = 19;
		info->size = 0x00100000;
		break;		/* => 1 MB	*/

	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160T:
		info->flash_id += FLASH_AM160T;
		info->sector_count = 35;
		info->size = 0x00200000;
		break;		/* => 2 MB	*/

	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160B:
		info->flash_id += FLASH_AM160B;
		info->sector_count = 35;
		info->size = 0x00200000;
		break;		/* => 2 MB	*/

	case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320T:
		info->flash_id += FLASH_AM320T;
		info->sector_count = 67;
		info->size = 0x00400000;
		break;		/* => 4 MB	*/

	case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320B:
		info->flash_id += FLASH_AM320B;
		info->sector_count = 67;
		info->size = 0x00400000;
		break;		/* => 4 MB	*/

	case (CFG_FLASH_WORD_SIZE)MX_ID_LV320B:
		info->flash_id += FLASH_MXLV320B;
		info->sector_count = 71;
		info->size = 0x00400000;
		break;		/* => 4 MB	*/

	default:
		info->flash_id = FLASH_UNKNOWN;
		return (0);	/* => no or unknown flash */
	}

	/* set up sector start address table */
	if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
		for (i = 0; i < info->sector_count; i++)
			info->start[i] = base + (i * 0x00010000);
	}