[J-u-boot.git] / board / fads / flash.c

/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * 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 <common.h>
#include <mpc8xx.h>

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

#if defined(CONFIG_ENV_IS_IN_FLASH)
# ifndef  CONFIG_ENV_ADDR
#  define CONFIG_ENV_ADDR	(CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
# endif
# ifndef  CONFIG_ENV_SIZE
#  define CONFIG_ENV_SIZE	CONFIG_ENV_SECT_SIZE
# endif
# ifndef  CONFIG_ENV_SECT_SIZE
#  define CONFIG_ENV_SECT_SIZE  CONFIG_ENV_SIZE
# endif
#endif

#define QUAD_ID(id)	((((ulong)(id) & 0xFF) << 24) | \
			 (((ulong)(id) & 0xFF) << 16) | \
			 (((ulong)(id) & 0xFF) << 8)  | \
			 (((ulong)(id) & 0xFF) << 0)    \
			)

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

/*-----------------------------------------------------------------------
 */
unsigned long flash_init (void)
{
	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;
	vu_long *bcsr = (vu_long *)BCSR_ADDR;
	unsigned long pd_size, total_size, bsize, or_am;
	int i;

	/* Init: no FLASHes known */
	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
		flash_info[i].flash_id = FLASH_UNKNOWN;
		flash_info[i].size = 0;
		flash_info[i].sector_count = 0;
		flash_info[i].start[0] = 0xFFFFFFFF; /* For TFTP */
	}

	switch ((bcsr[2] & BCSR2_FLASH_PD_MASK) >> BCSR2_FLASH_PD_SHIFT) {
	case 2:
	case 4:
	case 6:
		pd_size = 0x800000;
		or_am = 0xFF800000;
		break;

	case 5:
	case 7:
		pd_size = 0x400000;
		or_am = 0xFFC00000;
		break;

	case 8:
		pd_size = 0x200000;
		or_am = 0xFFE00000;
		break;

	default:
		pd_size = 0;
		or_am = 0xFFE00000;
		printf("## Unsupported flash detected by BCSR: 0x%08lX\n", bcsr[2]);
	}

	total_size = 0;
	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS && total_size < pd_size; ++i) {
		bsize = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE + total_size),
				       &flash_info[i]);

		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
			printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
				i, bsize, bsize >> 20);
		}

		total_size += bsize;
	}

	if (total_size != pd_size) {
		printf("## Detected flash size %lu conflicts with PD data %lu\n",
		       total_size, pd_size);
	}

	/* Remap FLASH according to real size */
	memctl->memc_or0 = or_am | CONFIG_SYS_OR_TIMING_FLASH;

	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS && flash_info[i].size != 0; ++i) {
#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
		/* monitor protection ON by default */
		if (CONFIG_SYS_MONITOR_BASE >= flash_info[i].start[0])
			flash_protect (FLAG_PROTECT_SET,
				       CONFIG_SYS_MONITOR_BASE,
				       CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
				       &flash_info[i]);
#endif

#ifdef	CONFIG_ENV_IS_IN_FLASH
		/* ENV protection ON by default */
		if (CONFIG_ENV_ADDR >= flash_info[i].start[0])
			flash_protect (FLAG_PROTECT_SET,
				       CONFIG_ENV_ADDR,
				       CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
				       &flash_info[i]);
#endif
	}

	return total_size;
}

/*-----------------------------------------------------------------------
 */
void flash_print_info (flash_info_t * info)
{
	int i;

	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_FUJ:
		printf ("FUJITSU ");
		break;
	case FLASH_MAN_BM:
		printf ("BRIGHT MICRO ");
		break;
	default:
		printf ("Unknown Vendor ");
		break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case FLASH_AM040:
		printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
		break;
	case FLASH_AM080:
		printf ("29F080 or 29LV080 (8 Mbit, uniform sectors)\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_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;
	default:
		printf ("Unknown Chip Type\n");
		break;
	}

	printf ("  Size: %ld MB in %d Sectors\n", info->size >> 20,
		info->sector_count);

	printf ("  Sector Start Addresses:");

	for (i = 0; i < info->sector_count; ++i) {
		if ((i % 5) == 0) {
			printf ("\n   ");
		}

		printf (" %08lX%s",
			info->start[i], info->protect[i] ? " (RO)" : "     ");
	}

	printf ("\n");
}

/*-----------------------------------------------------------------------
 * The following code can not run from flash!
 */
static ulong flash_get_size (vu_long * addr, flash_info_t * info)
{
	short i;

	/* Write auto select command: read Manufacturer ID */
	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;
	addr[0x0555] = 0x90909090;

	switch (addr[0]) {
	case QUAD_ID(AMD_MANUFACT):
		info->flash_id = FLASH_MAN_AMD;
		break;

	case QUAD_ID(FUJ_MANUFACT):
		info->flash_id = FLASH_MAN_FUJ;
		break;

	default:
		info->flash_id = FLASH_UNKNOWN;
		info->sector_count = 0;
		info->size = 0;
		break;
	}

	switch (addr[1]) {	/* device ID            */
	case QUAD_ID(AMD_ID_F040B):
	case QUAD_ID(AMD_ID_LV040B):
		info->flash_id += FLASH_AM040;
		info->sector_count = 8;
		info->size = 0x00200000;
		break;		/* => 2 MB              */

	case QUAD_ID(AMD_ID_F080B):
		info->flash_id += FLASH_AM080;
		info->sector_count = 16;
		info->size = 0x00400000;
		break;		/* => 4 MB              */
#if 0
	case AMD_ID_LV400T:
		info->flash_id += FLASH_AM400T;
		info->sector_count = 11;
		info->size = 0x00100000;
		break;		/* => 1 MB              */

	case AMD_ID_LV400B:
		info->flash_id += FLASH_AM400B;
		info->sector_count = 11;
		info->size = 0x00100000;
		break;		/* => 1 MB              */

	case AMD_ID_LV800T:
		info->flash_id += FLASH_AM800T;
		info->sector_count = 19;
		info->size = 0x00200000;
		break;		/* => 2 MB              */

	case AMD_ID_LV800B:
		info->flash_id += FLASH_AM800B;
		info->sector_count = 19;
		info->size = 0x00200000;
		break;		/* => 2 MB              */

	case AMD_ID_LV160T:
		info->flash_id += FLASH_AM160T;
		info->sector_count = 35;
		info->size = 0x00400000;
		break;		/* => 4 MB              */

	case AMD_ID_LV160B:
		info->flash_id += FLASH_AM160B;
		info->sector_count = 35;
		info->size = 0x00400000;
		break;		/* => 4 MB              */

	case AMD_ID_LV320T:
		info->flash_id += FLASH_AM320T;
		info->sector_count = 67;
		info->size = 0x00800000;
		break;		/* => 8 MB              */

	case AMD_ID_LV320B:
		info->flash_id += FLASH_AM320B;
		info->sector_count = 67;
		info->size = 0x00800000;
		break;		/* => 8 MB              */
#endif /* 0 */
	default:
		info->flash_id = FLASH_UNKNOWN;
		return (0);	/* => no or unknown flash */
	}

#if 0
	/* set up sector start address table */
	if (info->flash_id & FLASH_BTYPE) {
		/* set sector offsets for bottom boot block type        */
		info->start[0] = base + 0x00000000;
		info->start[1] = base + 0x00008000;
		info->start[2] = base + 0x0000C000;
		info->start[3] = base + 0x00010000;
		for (i = 4; i < info->sector_count; i++) {
			info->start[i] = base + (i * 0x00020000) - 0x00060000;
		}
	} else {
		/* set sector offsets for top boot block type           */
		i = info->sector_count - 1;
		info->start[i--] = base + info->size - 0x00008000;
		info->start[i--] = base + info->size - 0x0000C000;
		info->start[i--] = base + info->size - 0x00010000;
		for (; i >= 0; i--) {
			info->start[i] = base + i * 0x00020000;
		}
	}
#else
	/* set sector offsets for uniform sector type */
	for (i = 0; i < info->sector_count; i++)
		info->start[i] = (ulong)addr + (i * 0x00040000);
#endif

	/* check for protected sectors */
	for (i = 0; i < info->sector_count; i++) {
		/* read sector protection at sector address, (A7 .. A0) = 0x02 */
		/* D0 = 1 if protected */
		addr = (volatile unsigned long *) (info->start[i]);
		info->protect[i] = addr[2] & 1;
	}

	if (info->flash_id != FLASH_UNKNOWN) {
		addr = (volatile unsigned long *) info->start[0];
		*addr = 0xF0F0F0F0;	/* reset bank */
	}

	return (info->size);
}

/*-----------------------------------------------------------------------
 */
int flash_erase (flash_info_t * info, int s_first, int s_last)
{
	vu_long *addr = (vu_long *) (info->start[0]);
	int flag, prot, sect, l_sect;
	ulong start, now, last;

	if ((s_first < 0) || (s_first > s_last)) {
		if (info->flash_id == FLASH_UNKNOWN) {
			printf ("- missing\n");
		} else {
			printf ("- no sectors to erase\n");
		}
		return ERR_INVAL;
	}

	if ((info->flash_id == FLASH_UNKNOWN) ||
	    (info->flash_id > FLASH_AMD_COMP)) {
		printf ("Can't erase unknown flash type - aborted\n");
		return ERR_UNKNOWN_FLASH_TYPE;
	}

	prot = 0;
	for (sect = s_first; sect <= s_last; ++sect) {
		if (info->protect[sect]) {
			prot++;
		}
	}

	if (prot) {
		printf ("- Warning: %d protected sectors will not be erased!\n", prot);
	} else {
		printf ("\n");
	}

	l_sect = -1;

	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();

	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;
	addr[0x0555] = 0x80808080;
	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;

	/* Start erase on unprotected sectors */
	for (sect = s_first; sect <= s_last; sect++) {
		if (info->protect[sect] == 0) {	/* not protected */
			addr = (vu_long *) (info->start[sect]);
			addr[0] = 0x30303030;
			l_sect = sect;
		}
	}

	/* re-enable interrupts if necessary */
	if (flag)
		enable_interrupts ();

	/* wait at least 80us - let's wait 1 ms */
	udelay (1000);

	/*
	 * We wait for the last triggered sector
	 */
	if (l_sect < 0)
		goto DONE;

	start = get_timer (0);
	last = start;
	addr = (vu_long *) (info->start[l_sect]);
	while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
	{
		if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
			printf ("Timeout\n");
			return ERR_TIMOUT;
		}
		/* show that we're waiting */
		if ((now - last) > 1000) {	/* every second */
			putc ('.');
			last = now;
		}
	}

      DONE:
	/* reset to read mode */
	addr = (volatile unsigned long *) info->start[0];
	addr[0] = 0xF0F0F0F0;	/* reset bank */

	printf (" done\n");

	return 0;
}

/*-----------------------------------------------------------------------
 * Copy memory to flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
	ulong cp, wp, data;
	int i, l, rc;

	wp = (addr & ~3);	/* get lower word aligned address */

	/*
	 * handle unaligned start bytes
	 */
	if ((l = addr - wp) != 0) {
		data = 0;
		for (i = 0, cp = wp; i < l; ++i, ++cp) {
			data = (data << 8) | (*(uchar *) cp);
		}
		for (; i < 4 && cnt > 0; ++i) {
			data = (data << 8) | *src++;
			--cnt;
			++cp;
		}
		for (; cnt == 0 && i < 4; ++i, ++cp) {
			data = (data << 8) | (*(uchar *) cp);
		}

		if ((rc = write_word (info, wp, data)) != 0) {
			return (rc);
		}
		wp += 4;
	}

	/*
	 * handle word aligned part
	 */
	while (cnt >= 4) {
		data = 0;
		for (i = 0; i < 4; ++i) {
			data = (data << 8) | *src++;
		}
		if ((rc = write_word (info, wp, data)) != 0) {
			return (rc);
		}
		wp += 4;
		cnt -= 4;
	}

	if (cnt == 0) {
		return (0);
	}

	/*
	 * handle unaligned tail bytes
	 */
	data = 0;
	for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
		data = (data << 8) | *src++;
		--cnt;
	}
	for (; i < 4; ++i, ++cp) {
		data = (data << 8) | (*(uchar *) cp);
	}

	return (write_word (info, wp, data));
}

/*-----------------------------------------------------------------------
 * Write a word to Flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */
static int write_word (flash_info_t * info, ulong dest, ulong data)
{
	vu_long *addr = (vu_long *) (info->start[0]);
	ulong start;
	int flag;

	/* Check if Flash is (sufficiently) erased */
	if ((*((vu_long *) dest) & data) != data) {
		return ERR_NOT_ERASED;
	}
	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();

	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;
	addr[0x0555] = 0xA0A0A0A0;

	*((vu_long *) dest) = data;

	/* re-enable interrupts if necessary */
	if (flag)
		enable_interrupts ();

	/* data polling for D7 */
	start = get_timer (0);
	while ((*((vu_long *) dest) & 0x80808080) != (data & 0x80808080))
	{
		if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
			return ERR_TIMOUT;
		}
	}
	return (0);
}
Commit	Line	Data
affae2bf WD	1	/*
	2	* (C) Copyright 2000
	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <mpc8xx.h>
	26
6d0f6bcf	27	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
affae2bf	28
5a1aceb0	29	#if defined(CONFIG_ENV_IS_IN_FLASH)
0e8d1586	30	# ifndef CONFIG_ENV_ADDR
6d0f6bcf	31	# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
affae2bf	32	# endif
0e8d1586 JCPV	33	# ifndef CONFIG_ENV_SIZE
0e8d1586 JCPV	34	# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
affae2bf	35	# endif
0e8d1586 JCPV	36	# ifndef CONFIG_ENV_SECT_SIZE
0e8d1586 JCPV	37	# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
affae2bf WD	38	# endif
	39	#endif
	40
99edcfb2 WD	41	#define QUAD_ID(id) ((((ulong)(id) & 0xFF) << 24) \| \
	42	(((ulong)(id) & 0xFF) << 16) \| \
	43	(((ulong)(id) & 0xFF) << 8) \| \
	44	(((ulong)(id) & 0xFF) << 0) \
	45	)
	46
affae2bf WD	47	/*-----------------------------------------------------------------------
	48	* Functions
	49	*/
bf9e3b38 WD	50	static ulong flash_get_size (vu_long * addr, flash_info_t * info);
bf9e3b38 WD	51	static int write_word (flash_info_t * info, ulong dest, ulong data);
affae2bf WD	52
	53	/*-----------------------------------------------------------------------
	54	*/
affae2bf WD	55	unsigned long flash_init (void)
affae2bf WD	56	{
6d0f6bcf	57	volatile immap_t immap = (immap_t ) CONFIG_SYS_IMMR;
affae2bf	58	volatile memctl8xx_t *memctl = &immap->im_memctl;
99edcfb2 WD	59	vu_long bcsr = (vu_long )BCSR_ADDR;
99edcfb2 WD	60	unsigned long pd_size, total_size, bsize, or_am;
affae2bf WD	61	int i;
	62
	63	/* Init: no FLASHes known */
6d0f6bcf	64	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
affae2bf	65	flash_info[i].flash_id = FLASH_UNKNOWN;
99edcfb2 WD	66	flash_info[i].size = 0;
	67	flash_info[i].sector_count = 0;
	68	flash_info[i].start[0] = 0xFFFFFFFF; /* For TFTP */
affae2bf WD	69	}
affae2bf WD	70
99edcfb2 WD	71	switch ((bcsr[2] & BCSR2_FLASH_PD_MASK) >> BCSR2_FLASH_PD_SHIFT) {
	72	case 2:
	73	case 4:
	74	case 6:
	75	pd_size = 0x800000;
	76	or_am = 0xFF800000;
	77	break;
affae2bf	78
99edcfb2 WD	79	case 5:
	80	case 7:
	81	pd_size = 0x400000;
	82	or_am = 0xFFC00000;
	83	break;
affae2bf	84
99edcfb2 WD	85	case 8:
	86	pd_size = 0x200000;
	87	or_am = 0xFFE00000;
	88	break;
affae2bf	89
99edcfb2 WD	90	default:
	91	pd_size = 0;
	92	or_am = 0xFFE00000;
9b55a253	93	printf("## Unsupported flash detected by BCSR: 0x%08lX\n", bcsr[2]);
affae2bf WD	94	}
affae2bf WD	95
99edcfb2	96	total_size = 0;
6d0f6bcf JCPV	97	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS && total_size < pd_size; ++i) {
6d0f6bcf JCPV	98	bsize = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE + total_size),
99edcfb2 WD	99	&flash_info[i]);
	100
	101	if (flash_info[i].flash_id == FLASH_UNKNOWN) {
	102	printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
	103	i, bsize, bsize >> 20);
	104	}
	105
	106	total_size += bsize;
bf9e3b38	107	}
affae2bf	108
99edcfb2 WD	109	if (total_size != pd_size) {
	110	printf("## Detected flash size %lu conflicts with PD data %lu\n",
	111	total_size, pd_size);
affae2bf WD	112	}
	113
	114	/* Remap FLASH according to real size */
6d0f6bcf	115	memctl->memc_or0 = or_am \| CONFIG_SYS_OR_TIMING_FLASH;
affae2bf	116
6d0f6bcf JCPV	117	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS && flash_info[i].size != 0; ++i) {
6d0f6bcf JCPV	118	#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
affae2bf	119	/* monitor protection ON by default */
6d0f6bcf	120	if (CONFIG_SYS_MONITOR_BASE >= flash_info[i].start[0])
99edcfb2	121	flash_protect (FLAG_PROTECT_SET,
6d0f6bcf JCPV	122	CONFIG_SYS_MONITOR_BASE,
6d0f6bcf JCPV	123	CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
99edcfb2	124	&flash_info[i]);
affae2bf WD	125	#endif
affae2bf WD	126
5a1aceb0	127	#ifdef CONFIG_ENV_IS_IN_FLASH
affae2bf	128	/* ENV protection ON by default */
0e8d1586	129	if (CONFIG_ENV_ADDR >= flash_info[i].start[0])
99edcfb2	130	flash_protect (FLAG_PROTECT_SET,
0e8d1586 JCPV	131	CONFIG_ENV_ADDR,
0e8d1586 JCPV	132	CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
99edcfb2	133	&flash_info[i]);
affae2bf	134	#endif
affae2bf WD	135	}
affae2bf WD	136
99edcfb2	137	return total_size;
affae2bf WD	138	}
	139
	140	/*-----------------------------------------------------------------------
	141	*/
bf9e3b38	142	void flash_print_info (flash_info_t * info)
affae2bf WD	143	{
	144	int i;
	145
bf9e3b38	146	if (info->flash_id == FLASH_UNKNOWN) {
affae2bf WD	147	printf ("missing or unknown FLASH type\n");
	148	return;
	149	}
	150
bf9e3b38 WD	151	switch (info->flash_id & FLASH_VENDMASK) {
	152	case FLASH_MAN_AMD:
	153	printf ("AMD ");
	154	break;
	155	case FLASH_MAN_FUJ:
	156	printf ("FUJITSU ");
	157	break;
	158	case FLASH_MAN_BM:
	159	printf ("BRIGHT MICRO ");
	160	break;
	161	default:
	162	printf ("Unknown Vendor ");
	163	break;
affae2bf WD	164	}
affae2bf WD	165
bf9e3b38 WD	166	switch (info->flash_id & FLASH_TYPEMASK) {
	167	case FLASH_AM040:
	168	printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
	169	break;
	170	case FLASH_AM080:
	171	printf ("29F080 or 29LV080 (8 Mbit, uniform sectors)\n");
	172	break;
	173	case FLASH_AM400B:
	174	printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
	175	break;
	176	case FLASH_AM400T:
	177	printf ("AM29LV400T (4 Mbit, top boot sector)\n");
	178	break;
	179	case FLASH_AM800B:
	180	printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
	181	break;
	182	case FLASH_AM800T:
	183	printf ("AM29LV800T (8 Mbit, top boot sector)\n");
	184	break;
	185	case FLASH_AM160B:
	186	printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
	187	break;
	188	case FLASH_AM160T:
	189	printf ("AM29LV160T (16 Mbit, top boot sector)\n");
	190	break;
	191	case FLASH_AM320B:
	192	printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
	193	break;
	194	case FLASH_AM320T:
	195	printf ("AM29LV320T (32 Mbit, top boot sector)\n");
	196	break;
	197	default:
	198	printf ("Unknown Chip Type\n");
	199	break;
affae2bf WD	200	}
affae2bf WD	201
bf9e3b38 WD	202	printf (" Size: %ld MB in %d Sectors\n", info->size >> 20,
bf9e3b38 WD	203	info->sector_count);
affae2bf WD	204
	205	printf (" Sector Start Addresses:");
	206
bf9e3b38 WD	207	for (i = 0; i < info->sector_count; ++i) {
bf9e3b38 WD	208	if ((i % 5) == 0) {
affae2bf WD	209	printf ("\n ");
	210	}
	211
	212	printf (" %08lX%s",
bf9e3b38	213	info->start[i], info->protect[i] ? " (RO)" : " ");
affae2bf WD	214	}
	215
	216	printf ("\n");
affae2bf WD	217	}
	218
	219	/*-----------------------------------------------------------------------
99edcfb2	220	* The following code can not run from flash!
affae2bf	221	*/
bf9e3b38	222	static ulong flash_get_size (vu_long * addr, flash_info_t * info)
affae2bf WD	223	{
affae2bf WD	224	short i;
bf9e3b38	225
affae2bf	226	/* Write auto select command: read Manufacturer ID */
affae2bf WD	227	addr[0x0555] = 0xAAAAAAAA;
	228	addr[0x02AA] = 0x55555555;
	229	addr[0x0555] = 0x90909090;
affae2bf	230
99edcfb2 WD	231	switch (addr[0]) {
99edcfb2 WD	232	case QUAD_ID(AMD_MANUFACT):
bf9e3b38 WD	233	info->flash_id = FLASH_MAN_AMD;
bf9e3b38 WD	234	break;
affae2bf	235
99edcfb2	236	case QUAD_ID(FUJ_MANUFACT):
bf9e3b38 WD	237	info->flash_id = FLASH_MAN_FUJ;
bf9e3b38 WD	238	break;
affae2bf	239
bf9e3b38 WD	240	default:
	241	info->flash_id = FLASH_UNKNOWN;
	242	info->sector_count = 0;
	243	info->size = 0;
	244	break;
	245	}
	246
99edcfb2 WD	247	switch (addr[1]) { /* device ID */
	248	case QUAD_ID(AMD_ID_F040B):
	249	case QUAD_ID(AMD_ID_LV040B):
bf9e3b38 WD	250	info->flash_id += FLASH_AM040;
	251	info->sector_count = 8;
	252	info->size = 0x00200000;
	253	break; /* => 2 MB */
	254
99edcfb2	255	case QUAD_ID(AMD_ID_F080B):
bf9e3b38 WD	256	info->flash_id += FLASH_AM080;
	257	info->sector_count = 16;
	258	info->size = 0x00400000;
	259	break; /* => 4 MB */
99edcfb2	260	#if 0
bf9e3b38 WD	261	case AMD_ID_LV400T:
	262	info->flash_id += FLASH_AM400T;
	263	info->sector_count = 11;
	264	info->size = 0x00100000;
	265	break; /* => 1 MB */
	266
	267	case AMD_ID_LV400B:
	268	info->flash_id += FLASH_AM400B;
	269	info->sector_count = 11;
	270	info->size = 0x00100000;
	271	break; /* => 1 MB */
	272
	273	case AMD_ID_LV800T:
	274	info->flash_id += FLASH_AM800T;
	275	info->sector_count = 19;
	276	info->size = 0x00200000;
	277	break; /* => 2 MB */
	278
	279	case AMD_ID_LV800B:
	280	info->flash_id += FLASH_AM800B;
	281	info->sector_count = 19;
	282	info->size = 0x00200000;
	283	break; /* => 2 MB */
	284
	285	case AMD_ID_LV160T:
	286	info->flash_id += FLASH_AM160T;
	287	info->sector_count = 35;
	288	info->size = 0x00400000;
	289	break; /* => 4 MB */
	290
	291	case AMD_ID_LV160B:
	292	info->flash_id += FLASH_AM160B;
	293	info->sector_count = 35;
	294	info->size = 0x00400000;
	295	break; /* => 4 MB */
99edcfb2	296
bf9e3b38 WD	297	case AMD_ID_LV320T:
	298	info->flash_id += FLASH_AM320T;
	299	info->sector_count = 67;
	300	info->size = 0x00800000;
	301	break; /* => 8 MB */
	302
	303	case AMD_ID_LV320B:
	304	info->flash_id += FLASH_AM320B;
	305	info->sector_count = 67;
	306	info->size = 0x00800000;
	307	break; /* => 8 MB */
99edcfb2	308	#endif /* 0 */
bf9e3b38 WD	309	default:
	310	info->flash_id = FLASH_UNKNOWN;
	311	return (0); /* => no or unknown flash */
affae2bf WD	312	}
	313
	314	#if 0
	315	/* set up sector start address table */
	316	if (info->flash_id & FLASH_BTYPE) {
bf9e3b38	317	/* set sector offsets for bottom boot block type */
affae2bf WD	318	info->start[0] = base + 0x00000000;
	319	info->start[1] = base + 0x00008000;
	320	info->start[2] = base + 0x0000C000;
	321	info->start[3] = base + 0x00010000;
	322	for (i = 4; i < info->sector_count; i++) {
	323	info->start[i] = base + (i * 0x00020000) - 0x00060000;
	324	}
	325	} else {
bf9e3b38	326	/* set sector offsets for top boot block type */
affae2bf WD	327	i = info->sector_count - 1;
	328	info->start[i--] = base + info->size - 0x00008000;
	329	info->start[i--] = base + info->size - 0x0000C000;
	330	info->start[i--] = base + info->size - 0x00010000;
	331	for (; i >= 0; i--) {
	332	info->start[i] = base + i * 0x00020000;
	333	}
	334	}
	335	#else
99edcfb2 WD	336	/* set sector offsets for uniform sector type */
	337	for (i = 0; i < info->sector_count; i++)
	338	info->start[i] = (ulong)addr + (i * 0x00040000);
affae2bf WD	339	#endif
	340
	341	/* check for protected sectors */
bf9e3b38	342	for (i = 0; i < info->sector_count; i++) {
affae2bf WD	343	/* read sector protection at sector address, (A7 .. A0) = 0x02 */
affae2bf WD	344	/* D0 = 1 if protected */
bf9e3b38	345	addr = (volatile unsigned long *) (info->start[i]);
affae2bf WD	346	info->protect[i] = addr[2] & 1;
	347	}
	348
bf9e3b38 WD	349	if (info->flash_id != FLASH_UNKNOWN) {
bf9e3b38 WD	350	addr = (volatile unsigned long *) info->start[0];
affae2bf	351	addr = 0xF0F0F0F0; / reset bank */
affae2bf WD	352	}
	353
	354	return (info->size);
	355	}
	356
affae2bf WD	357	/*-----------------------------------------------------------------------
affae2bf WD	358	*/
bf9e3b38	359	int flash_erase (flash_info_t * info, int s_first, int s_last)
affae2bf	360	{
bf9e3b38	361	vu_long addr = (vu_long ) (info->start[0]);
affae2bf WD	362	int flag, prot, sect, l_sect;
	363	ulong start, now, last;
	364
	365	if ((s_first < 0) \|\| (s_first > s_last)) {
	366	if (info->flash_id == FLASH_UNKNOWN) {
	367	printf ("- missing\n");
	368	} else {
	369	printf ("- no sectors to erase\n");
	370	}
99edcfb2	371	return ERR_INVAL;
affae2bf WD	372	}
	373
	374	if ((info->flash_id == FLASH_UNKNOWN) \|\|
	375	(info->flash_id > FLASH_AMD_COMP)) {
	376	printf ("Can't erase unknown flash type - aborted\n");
99edcfb2	377	return ERR_UNKNOWN_FLASH_TYPE;
affae2bf WD	378	}
	379
	380	prot = 0;
bf9e3b38	381	for (sect = s_first; sect <= s_last; ++sect) {
affae2bf WD	382	if (info->protect[sect]) {
	383	prot++;
	384	}
	385	}
	386
	387	if (prot) {
bf9e3b38	388	printf ("- Warning: %d protected sectors will not be erased!\n", prot);
affae2bf WD	389	} else {
	390	printf ("\n");
	391	}
	392
	393	l_sect = -1;
	394
	395	/* Disable interrupts which might cause a timeout here */
bf9e3b38	396	flag = disable_interrupts ();
affae2bf	397
affae2bf WD	398	addr[0x0555] = 0xAAAAAAAA;
	399	addr[0x02AA] = 0x55555555;
	400	addr[0x0555] = 0x80808080;
	401	addr[0x0555] = 0xAAAAAAAA;
	402	addr[0x02AA] = 0x55555555;
affae2bf WD	403
affae2bf WD	404	/* Start erase on unprotected sectors */
bf9e3b38	405	for (sect = s_first; sect <= s_last; sect++) {
affae2bf	406	if (info->protect[sect] == 0) { /* not protected */
bf9e3b38	407	addr = (vu_long *) (info->start[sect]);
affae2bf	408	addr[0] = 0x30303030;
affae2bf WD	409	l_sect = sect;
	410	}
	411	}
	412
	413	/* re-enable interrupts if necessary */
	414	if (flag)
bf9e3b38	415	enable_interrupts ();
affae2bf WD	416
	417	/* wait at least 80us - let's wait 1 ms */
	418	udelay (1000);
	419
	420	/*
	421	* We wait for the last triggered sector
	422	*/
	423	if (l_sect < 0)
	424	goto DONE;
	425
	426	start = get_timer (0);
bf9e3b38 WD	427	last = start;
bf9e3b38 WD	428	addr = (vu_long *) (info->start[l_sect]);
affae2bf	429	while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
affae2bf	430	{
6d0f6bcf	431	if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
affae2bf	432	printf ("Timeout\n");
99edcfb2	433	return ERR_TIMOUT;
affae2bf WD	434	}
	435	/* show that we're waiting */
	436	if ((now - last) > 1000) { /* every second */
	437	putc ('.');
	438	last = now;
	439	}
	440	}
	441
bf9e3b38	442	DONE:
affae2bf	443	/* reset to read mode */
bf9e3b38	444	addr = (volatile unsigned long *) info->start[0];
affae2bf	445	addr[0] = 0xF0F0F0F0; /* reset bank */
affae2bf WD	446
affae2bf WD	447	printf (" done\n");
99edcfb2	448
affae2bf WD	449	return 0;
	450	}
	451
	452	/*-----------------------------------------------------------------------
	453	* Copy memory to flash, returns:
	454	* 0 - OK
	455	* 1 - write timeout
	456	* 2 - Flash not erased
	457	*/
bf9e3b38	458	int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
affae2bf WD	459	{
	460	ulong cp, wp, data;
	461	int i, l, rc;
	462
	463	wp = (addr & ~3); /* get lower word aligned address */
	464
	465	/*
	466	* handle unaligned start bytes
	467	*/
	468	if ((l = addr - wp) != 0) {
	469	data = 0;
bf9e3b38 WD	470	for (i = 0, cp = wp; i < l; ++i, ++cp) {
bf9e3b38 WD	471	data = (data << 8) \| ((uchar ) cp);
affae2bf	472	}
bf9e3b38	473	for (; i < 4 && cnt > 0; ++i) {
affae2bf WD	474	data = (data << 8) \| *src++;
	475	--cnt;
	476	++cp;
	477	}
bf9e3b38 WD	478	for (; cnt == 0 && i < 4; ++i, ++cp) {
bf9e3b38 WD	479	data = (data << 8) \| ((uchar ) cp);
affae2bf WD	480	}
affae2bf WD	481
bf9e3b38	482	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	483	return (rc);
	484	}
	485	wp += 4;
	486	}
	487
	488	/*
	489	* handle word aligned part
	490	*/
	491	while (cnt >= 4) {
	492	data = 0;
bf9e3b38	493	for (i = 0; i < 4; ++i) {
affae2bf WD	494	data = (data << 8) \| *src++;
affae2bf WD	495	}
bf9e3b38	496	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	497	return (rc);
affae2bf WD	498	}
bf9e3b38	499	wp += 4;
affae2bf WD	500	cnt -= 4;
	501	}
	502
	503	if (cnt == 0) {
	504	return (0);
	505	}
	506
	507	/*
	508	* handle unaligned tail bytes
	509	*/
	510	data = 0;
bf9e3b38	511	for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
affae2bf WD	512	data = (data << 8) \| *src++;
	513	--cnt;
	514	}
bf9e3b38 WD	515	for (; i < 4; ++i, ++cp) {
bf9e3b38 WD	516	data = (data << 8) \| ((uchar ) cp);
affae2bf WD	517	}
affae2bf WD	518
bf9e3b38	519	return (write_word (info, wp, data));
affae2bf WD	520	}
	521
	522	/*-----------------------------------------------------------------------
	523	* Write a word to Flash, returns:
	524	* 0 - OK
	525	* 1 - write timeout
	526	* 2 - Flash not erased
	527	*/
bf9e3b38	528	static int write_word (flash_info_t * info, ulong dest, ulong data)
affae2bf	529	{
bf9e3b38	530	vu_long addr = (vu_long ) (info->start[0]);
affae2bf WD	531	ulong start;
	532	int flag;
	533
	534	/* Check if Flash is (sufficiently) erased */
bf9e3b38	535	if ((((vu_long ) dest) & data) != data) {
99edcfb2	536	return ERR_NOT_ERASED;
affae2bf WD	537	}
affae2bf WD	538	/* Disable interrupts which might cause a timeout here */
bf9e3b38	539	flag = disable_interrupts ();
affae2bf	540
affae2bf WD	541	addr[0x0555] = 0xAAAAAAAA;
	542	addr[0x02AA] = 0x55555555;
	543	addr[0x0555] = 0xA0A0A0A0;
affae2bf	544
bf9e3b38	545	((vu_long ) dest) = data;
affae2bf WD	546
	547	/* re-enable interrupts if necessary */
	548	if (flag)
bf9e3b38	549	enable_interrupts ();
affae2bf WD	550
	551	/* data polling for D7 */
	552	start = get_timer (0);
bf9e3b38	553	while ((((vu_long ) dest) & 0x80808080) != (data & 0x80808080))
affae2bf	554	{
6d0f6bcf	555	if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
99edcfb2	556	return ERR_TIMOUT;
affae2bf WD	557	}
	558	}
	559	return (0);
	560	}