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

/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#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, wd@denx.de.
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
affae2bf WD	6	*/
	7
	8	#include <common.h>
	9	#include <mpc8xx.h>
	10
6d0f6bcf	11	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
affae2bf	12
5a1aceb0	13	#if defined(CONFIG_ENV_IS_IN_FLASH)
0e8d1586	14	# ifndef CONFIG_ENV_ADDR
6d0f6bcf	15	# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
affae2bf	16	# endif
0e8d1586 JCPV	17	# ifndef CONFIG_ENV_SIZE
0e8d1586 JCPV	18	# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
affae2bf	19	# endif
0e8d1586 JCPV	20	# ifndef CONFIG_ENV_SECT_SIZE
0e8d1586 JCPV	21	# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
affae2bf WD	22	# endif
	23	#endif
	24
99edcfb2 WD	25	#define QUAD_ID(id) ((((ulong)(id) & 0xFF) << 24) \| \
	26	(((ulong)(id) & 0xFF) << 16) \| \
	27	(((ulong)(id) & 0xFF) << 8) \| \
	28	(((ulong)(id) & 0xFF) << 0) \
	29	)
	30
affae2bf WD	31	/*-----------------------------------------------------------------------
	32	* Functions
	33	*/
bf9e3b38 WD	34	static ulong flash_get_size (vu_long * addr, flash_info_t * info);
bf9e3b38 WD	35	static int write_word (flash_info_t * info, ulong dest, ulong data);
affae2bf WD	36
	37	/*-----------------------------------------------------------------------
	38	*/
affae2bf WD	39	unsigned long flash_init (void)
affae2bf WD	40	{
6d0f6bcf	41	volatile immap_t immap = (immap_t ) CONFIG_SYS_IMMR;
affae2bf	42	volatile memctl8xx_t *memctl = &immap->im_memctl;
99edcfb2 WD	43	vu_long bcsr = (vu_long )BCSR_ADDR;
99edcfb2 WD	44	unsigned long pd_size, total_size, bsize, or_am;
affae2bf WD	45	int i;
	46
	47	/* Init: no FLASHes known */
6d0f6bcf	48	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
affae2bf	49	flash_info[i].flash_id = FLASH_UNKNOWN;
99edcfb2 WD	50	flash_info[i].size = 0;
	51	flash_info[i].sector_count = 0;
	52	flash_info[i].start[0] = 0xFFFFFFFF; /* For TFTP */
affae2bf WD	53	}
affae2bf WD	54
99edcfb2 WD	55	switch ((bcsr[2] & BCSR2_FLASH_PD_MASK) >> BCSR2_FLASH_PD_SHIFT) {
	56	case 2:
	57	case 4:
	58	case 6:
	59	pd_size = 0x800000;
	60	or_am = 0xFF800000;
	61	break;
affae2bf	62
99edcfb2 WD	63	case 5:
	64	case 7:
	65	pd_size = 0x400000;
	66	or_am = 0xFFC00000;
	67	break;
affae2bf	68
99edcfb2 WD	69	case 8:
	70	pd_size = 0x200000;
	71	or_am = 0xFFE00000;
	72	break;
affae2bf	73
99edcfb2 WD	74	default:
	75	pd_size = 0;
	76	or_am = 0xFFE00000;
9b55a253	77	printf("## Unsupported flash detected by BCSR: 0x%08lX\n", bcsr[2]);
affae2bf WD	78	}
affae2bf WD	79
99edcfb2	80	total_size = 0;
6d0f6bcf JCPV	81	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS && total_size < pd_size; ++i) {
6d0f6bcf JCPV	82	bsize = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE + total_size),
99edcfb2 WD	83	&flash_info[i]);
	84
	85	if (flash_info[i].flash_id == FLASH_UNKNOWN) {
	86	printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
	87	i, bsize, bsize >> 20);
	88	}
	89
	90	total_size += bsize;
bf9e3b38	91	}
affae2bf	92
99edcfb2 WD	93	if (total_size != pd_size) {
	94	printf("## Detected flash size %lu conflicts with PD data %lu\n",
	95	total_size, pd_size);
affae2bf WD	96	}
	97
	98	/* Remap FLASH according to real size */
6d0f6bcf	99	memctl->memc_or0 = or_am \| CONFIG_SYS_OR_TIMING_FLASH;
affae2bf	100
6d0f6bcf JCPV	101	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS && flash_info[i].size != 0; ++i) {
6d0f6bcf JCPV	102	#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
affae2bf	103	/* monitor protection ON by default */
6d0f6bcf	104	if (CONFIG_SYS_MONITOR_BASE >= flash_info[i].start[0])
99edcfb2	105	flash_protect (FLAG_PROTECT_SET,
6d0f6bcf JCPV	106	CONFIG_SYS_MONITOR_BASE,
6d0f6bcf JCPV	107	CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
99edcfb2	108	&flash_info[i]);
affae2bf WD	109	#endif
affae2bf WD	110
5a1aceb0	111	#ifdef CONFIG_ENV_IS_IN_FLASH
affae2bf	112	/* ENV protection ON by default */
0e8d1586	113	if (CONFIG_ENV_ADDR >= flash_info[i].start[0])
99edcfb2	114	flash_protect (FLAG_PROTECT_SET,
0e8d1586 JCPV	115	CONFIG_ENV_ADDR,
0e8d1586 JCPV	116	CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
99edcfb2	117	&flash_info[i]);
affae2bf	118	#endif
affae2bf WD	119	}
affae2bf WD	120
99edcfb2	121	return total_size;
affae2bf WD	122	}
	123
	124	/*-----------------------------------------------------------------------
	125	*/
bf9e3b38	126	void flash_print_info (flash_info_t * info)
affae2bf WD	127	{
	128	int i;
	129
bf9e3b38	130	if (info->flash_id == FLASH_UNKNOWN) {
affae2bf WD	131	printf ("missing or unknown FLASH type\n");
	132	return;
	133	}
	134
bf9e3b38 WD	135	switch (info->flash_id & FLASH_VENDMASK) {
	136	case FLASH_MAN_AMD:
	137	printf ("AMD ");
	138	break;
	139	case FLASH_MAN_FUJ:
	140	printf ("FUJITSU ");
	141	break;
	142	case FLASH_MAN_BM:
	143	printf ("BRIGHT MICRO ");
	144	break;
	145	default:
	146	printf ("Unknown Vendor ");
	147	break;
affae2bf WD	148	}
affae2bf WD	149
bf9e3b38 WD	150	switch (info->flash_id & FLASH_TYPEMASK) {
	151	case FLASH_AM040:
	152	printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
	153	break;
	154	case FLASH_AM080:
	155	printf ("29F080 or 29LV080 (8 Mbit, uniform sectors)\n");
	156	break;
	157	case FLASH_AM400B:
	158	printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
	159	break;
	160	case FLASH_AM400T:
	161	printf ("AM29LV400T (4 Mbit, top boot sector)\n");
	162	break;
	163	case FLASH_AM800B:
	164	printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
	165	break;
	166	case FLASH_AM800T:
	167	printf ("AM29LV800T (8 Mbit, top boot sector)\n");
	168	break;
	169	case FLASH_AM160B:
	170	printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
	171	break;
	172	case FLASH_AM160T:
	173	printf ("AM29LV160T (16 Mbit, top boot sector)\n");
	174	break;
	175	case FLASH_AM320B:
	176	printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
	177	break;
	178	case FLASH_AM320T:
	179	printf ("AM29LV320T (32 Mbit, top boot sector)\n");
	180	break;
	181	default:
	182	printf ("Unknown Chip Type\n");
	183	break;
affae2bf WD	184	}
affae2bf WD	185
bf9e3b38 WD	186	printf (" Size: %ld MB in %d Sectors\n", info->size >> 20,
bf9e3b38 WD	187	info->sector_count);
affae2bf WD	188
	189	printf (" Sector Start Addresses:");
	190
bf9e3b38 WD	191	for (i = 0; i < info->sector_count; ++i) {
bf9e3b38 WD	192	if ((i % 5) == 0) {
affae2bf WD	193	printf ("\n ");
	194	}
	195
	196	printf (" %08lX%s",
bf9e3b38	197	info->start[i], info->protect[i] ? " (RO)" : " ");
affae2bf WD	198	}
	199
	200	printf ("\n");
affae2bf WD	201	}
	202
	203	/*-----------------------------------------------------------------------
99edcfb2	204	* The following code can not run from flash!
affae2bf	205	*/
bf9e3b38	206	static ulong flash_get_size (vu_long * addr, flash_info_t * info)
affae2bf WD	207	{
affae2bf WD	208	short i;
bf9e3b38	209
affae2bf	210	/* Write auto select command: read Manufacturer ID */
affae2bf WD	211	addr[0x0555] = 0xAAAAAAAA;
	212	addr[0x02AA] = 0x55555555;
	213	addr[0x0555] = 0x90909090;
affae2bf	214
99edcfb2 WD	215	switch (addr[0]) {
99edcfb2 WD	216	case QUAD_ID(AMD_MANUFACT):
bf9e3b38 WD	217	info->flash_id = FLASH_MAN_AMD;
bf9e3b38 WD	218	break;
affae2bf	219
99edcfb2	220	case QUAD_ID(FUJ_MANUFACT):
bf9e3b38 WD	221	info->flash_id = FLASH_MAN_FUJ;
bf9e3b38 WD	222	break;
affae2bf	223
bf9e3b38 WD	224	default:
	225	info->flash_id = FLASH_UNKNOWN;
	226	info->sector_count = 0;
	227	info->size = 0;
	228	break;
	229	}
	230
99edcfb2 WD	231	switch (addr[1]) { /* device ID */
	232	case QUAD_ID(AMD_ID_F040B):
	233	case QUAD_ID(AMD_ID_LV040B):
bf9e3b38 WD	234	info->flash_id += FLASH_AM040;
	235	info->sector_count = 8;
	236	info->size = 0x00200000;
	237	break; /* => 2 MB */
	238
99edcfb2	239	case QUAD_ID(AMD_ID_F080B):
bf9e3b38 WD	240	info->flash_id += FLASH_AM080;
	241	info->sector_count = 16;
	242	info->size = 0x00400000;
	243	break; /* => 4 MB */
99edcfb2	244	#if 0
bf9e3b38 WD	245	case AMD_ID_LV400T:
	246	info->flash_id += FLASH_AM400T;
	247	info->sector_count = 11;
	248	info->size = 0x00100000;
	249	break; /* => 1 MB */
	250
	251	case AMD_ID_LV400B:
	252	info->flash_id += FLASH_AM400B;
	253	info->sector_count = 11;
	254	info->size = 0x00100000;
	255	break; /* => 1 MB */
	256
	257	case AMD_ID_LV800T:
	258	info->flash_id += FLASH_AM800T;
	259	info->sector_count = 19;
	260	info->size = 0x00200000;
	261	break; /* => 2 MB */
	262
	263	case AMD_ID_LV800B:
	264	info->flash_id += FLASH_AM800B;
	265	info->sector_count = 19;
	266	info->size = 0x00200000;
	267	break; /* => 2 MB */
	268
	269	case AMD_ID_LV160T:
	270	info->flash_id += FLASH_AM160T;
	271	info->sector_count = 35;
	272	info->size = 0x00400000;
	273	break; /* => 4 MB */
	274
	275	case AMD_ID_LV160B:
	276	info->flash_id += FLASH_AM160B;
	277	info->sector_count = 35;
	278	info->size = 0x00400000;
	279	break; /* => 4 MB */
99edcfb2	280
bf9e3b38 WD	281	case AMD_ID_LV320T:
	282	info->flash_id += FLASH_AM320T;
	283	info->sector_count = 67;
	284	info->size = 0x00800000;
	285	break; /* => 8 MB */
	286
	287	case AMD_ID_LV320B:
	288	info->flash_id += FLASH_AM320B;
	289	info->sector_count = 67;
	290	info->size = 0x00800000;
	291	break; /* => 8 MB */
99edcfb2	292	#endif /* 0 */
bf9e3b38 WD	293	default:
	294	info->flash_id = FLASH_UNKNOWN;
	295	return (0); /* => no or unknown flash */
affae2bf WD	296	}
	297
	298	#if 0
	299	/* set up sector start address table */
	300	if (info->flash_id & FLASH_BTYPE) {
bf9e3b38	301	/* set sector offsets for bottom boot block type */
affae2bf WD	302	info->start[0] = base + 0x00000000;
	303	info->start[1] = base + 0x00008000;
	304	info->start[2] = base + 0x0000C000;
	305	info->start[3] = base + 0x00010000;
	306	for (i = 4; i < info->sector_count; i++) {
	307	info->start[i] = base + (i * 0x00020000) - 0x00060000;
	308	}
	309	} else {
bf9e3b38	310	/* set sector offsets for top boot block type */
affae2bf WD	311	i = info->sector_count - 1;
	312	info->start[i--] = base + info->size - 0x00008000;
	313	info->start[i--] = base + info->size - 0x0000C000;
	314	info->start[i--] = base + info->size - 0x00010000;
	315	for (; i >= 0; i--) {
	316	info->start[i] = base + i * 0x00020000;
	317	}
	318	}
	319	#else
99edcfb2 WD	320	/* set sector offsets for uniform sector type */
	321	for (i = 0; i < info->sector_count; i++)
	322	info->start[i] = (ulong)addr + (i * 0x00040000);
affae2bf WD	323	#endif
	324
	325	/* check for protected sectors */
bf9e3b38	326	for (i = 0; i < info->sector_count; i++) {
affae2bf WD	327	/* read sector protection at sector address, (A7 .. A0) = 0x02 */
affae2bf WD	328	/* D0 = 1 if protected */
bf9e3b38	329	addr = (volatile unsigned long *) (info->start[i]);
affae2bf WD	330	info->protect[i] = addr[2] & 1;
	331	}
	332
bf9e3b38 WD	333	if (info->flash_id != FLASH_UNKNOWN) {
bf9e3b38 WD	334	addr = (volatile unsigned long *) info->start[0];
affae2bf	335	addr = 0xF0F0F0F0; / reset bank */
affae2bf WD	336	}
	337
	338	return (info->size);
	339	}
	340
affae2bf WD	341	/*-----------------------------------------------------------------------
affae2bf WD	342	*/
bf9e3b38	343	int flash_erase (flash_info_t * info, int s_first, int s_last)
affae2bf	344	{
bf9e3b38	345	vu_long addr = (vu_long ) (info->start[0]);
affae2bf WD	346	int flag, prot, sect, l_sect;
	347	ulong start, now, last;
	348
	349	if ((s_first < 0) \|\| (s_first > s_last)) {
	350	if (info->flash_id == FLASH_UNKNOWN) {
	351	printf ("- missing\n");
	352	} else {
	353	printf ("- no sectors to erase\n");
	354	}
99edcfb2	355	return ERR_INVAL;
affae2bf WD	356	}
	357
	358	if ((info->flash_id == FLASH_UNKNOWN) \|\|
	359	(info->flash_id > FLASH_AMD_COMP)) {
	360	printf ("Can't erase unknown flash type - aborted\n");
99edcfb2	361	return ERR_UNKNOWN_FLASH_TYPE;
affae2bf WD	362	}
	363
	364	prot = 0;
bf9e3b38	365	for (sect = s_first; sect <= s_last; ++sect) {
affae2bf WD	366	if (info->protect[sect]) {
	367	prot++;
	368	}
	369	}
	370
	371	if (prot) {
bf9e3b38	372	printf ("- Warning: %d protected sectors will not be erased!\n", prot);
affae2bf WD	373	} else {
	374	printf ("\n");
	375	}
	376
	377	l_sect = -1;
	378
	379	/* Disable interrupts which might cause a timeout here */
bf9e3b38	380	flag = disable_interrupts ();
affae2bf	381
affae2bf WD	382	addr[0x0555] = 0xAAAAAAAA;
	383	addr[0x02AA] = 0x55555555;
	384	addr[0x0555] = 0x80808080;
	385	addr[0x0555] = 0xAAAAAAAA;
	386	addr[0x02AA] = 0x55555555;
affae2bf WD	387
affae2bf WD	388	/* Start erase on unprotected sectors */
bf9e3b38	389	for (sect = s_first; sect <= s_last; sect++) {
affae2bf	390	if (info->protect[sect] == 0) { /* not protected */
bf9e3b38	391	addr = (vu_long *) (info->start[sect]);
affae2bf	392	addr[0] = 0x30303030;
affae2bf WD	393	l_sect = sect;
	394	}
	395	}
	396
	397	/* re-enable interrupts if necessary */
	398	if (flag)
bf9e3b38	399	enable_interrupts ();
affae2bf WD	400
	401	/* wait at least 80us - let's wait 1 ms */
	402	udelay (1000);
	403
	404	/*
	405	* We wait for the last triggered sector
	406	*/
	407	if (l_sect < 0)
	408	goto DONE;
	409
	410	start = get_timer (0);
bf9e3b38 WD	411	last = start;
bf9e3b38 WD	412	addr = (vu_long *) (info->start[l_sect]);
affae2bf	413	while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
affae2bf	414	{
6d0f6bcf	415	if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
affae2bf	416	printf ("Timeout\n");
99edcfb2	417	return ERR_TIMOUT;
affae2bf WD	418	}
	419	/* show that we're waiting */
	420	if ((now - last) > 1000) { /* every second */
	421	putc ('.');
	422	last = now;
	423	}
	424	}
	425
bf9e3b38	426	DONE:
affae2bf	427	/* reset to read mode */
bf9e3b38	428	addr = (volatile unsigned long *) info->start[0];
affae2bf	429	addr[0] = 0xF0F0F0F0; /* reset bank */
affae2bf WD	430
affae2bf WD	431	printf (" done\n");
99edcfb2	432
affae2bf WD	433	return 0;
	434	}
	435
	436	/*-----------------------------------------------------------------------
	437	* Copy memory to flash, returns:
	438	* 0 - OK
	439	* 1 - write timeout
	440	* 2 - Flash not erased
	441	*/
bf9e3b38	442	int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
affae2bf WD	443	{
	444	ulong cp, wp, data;
	445	int i, l, rc;
	446
	447	wp = (addr & ~3); /* get lower word aligned address */
	448
	449	/*
	450	* handle unaligned start bytes
	451	*/
	452	if ((l = addr - wp) != 0) {
	453	data = 0;
bf9e3b38 WD	454	for (i = 0, cp = wp; i < l; ++i, ++cp) {
bf9e3b38 WD	455	data = (data << 8) \| ((uchar ) cp);
affae2bf	456	}
bf9e3b38	457	for (; i < 4 && cnt > 0; ++i) {
affae2bf WD	458	data = (data << 8) \| *src++;
	459	--cnt;
	460	++cp;
	461	}
bf9e3b38 WD	462	for (; cnt == 0 && i < 4; ++i, ++cp) {
bf9e3b38 WD	463	data = (data << 8) \| ((uchar ) cp);
affae2bf WD	464	}
affae2bf WD	465
bf9e3b38	466	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	467	return (rc);
	468	}
	469	wp += 4;
	470	}
	471
	472	/*
	473	* handle word aligned part
	474	*/
	475	while (cnt >= 4) {
	476	data = 0;
bf9e3b38	477	for (i = 0; i < 4; ++i) {
affae2bf WD	478	data = (data << 8) \| *src++;
affae2bf WD	479	}
bf9e3b38	480	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	481	return (rc);
affae2bf WD	482	}
bf9e3b38	483	wp += 4;
affae2bf WD	484	cnt -= 4;
	485	}
	486
	487	if (cnt == 0) {
	488	return (0);
	489	}
	490
	491	/*
	492	* handle unaligned tail bytes
	493	*/
	494	data = 0;
bf9e3b38	495	for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
affae2bf WD	496	data = (data << 8) \| *src++;
	497	--cnt;
	498	}
bf9e3b38 WD	499	for (; i < 4; ++i, ++cp) {
bf9e3b38 WD	500	data = (data << 8) \| ((uchar ) cp);
affae2bf WD	501	}
affae2bf WD	502
bf9e3b38	503	return (write_word (info, wp, data));
affae2bf WD	504	}
	505
	506	/*-----------------------------------------------------------------------
	507	* Write a word to Flash, returns:
	508	* 0 - OK
	509	* 1 - write timeout
	510	* 2 - Flash not erased
	511	*/
bf9e3b38	512	static int write_word (flash_info_t * info, ulong dest, ulong data)
affae2bf	513	{
bf9e3b38	514	vu_long addr = (vu_long ) (info->start[0]);
affae2bf WD	515	ulong start;
	516	int flag;
	517
	518	/* Check if Flash is (sufficiently) erased */
bf9e3b38	519	if ((((vu_long ) dest) & data) != data) {
99edcfb2	520	return ERR_NOT_ERASED;
affae2bf WD	521	}
affae2bf WD	522	/* Disable interrupts which might cause a timeout here */
bf9e3b38	523	flag = disable_interrupts ();
affae2bf	524
affae2bf WD	525	addr[0x0555] = 0xAAAAAAAA;
	526	addr[0x02AA] = 0x55555555;
	527	addr[0x0555] = 0xA0A0A0A0;
affae2bf	528
bf9e3b38	529	((vu_long ) dest) = data;
affae2bf WD	530
	531	/* re-enable interrupts if necessary */
	532	if (flag)
bf9e3b38	533	enable_interrupts ();
affae2bf WD	534
	535	/* data polling for D7 */
	536	start = get_timer (0);
bf9e3b38	537	while ((((vu_long ) dest) & 0x80808080) != (data & 0x80808080))
affae2bf	538	{
6d0f6bcf	539	if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
99edcfb2	540	return ERR_TIMOUT;
affae2bf WD	541	}
	542	}
	543	return (0);
	544	}