[people/ms/u-boot.git] / board / icu862 / flash.c

/*
 * (C) Copyright 2001
 * 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

/*-----------------------------------------------------------------------
 * 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);
static void flash_get_offsets (ulong base, flash_info_t *info);

/*-----------------------------------------------------------------------
 */

unsigned long flash_init (void)
{
	volatile immap_t     *immap  = (immap_t *)CONFIG_SYS_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;
	unsigned long size_b0;
	int i;

	/* Init: no FLASHes known */
	for (i=0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
		flash_info[i].flash_id = FLASH_UNKNOWN;

	/* Static FLASH Bank configuration here - FIXME XXX */

	size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);

	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
		printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
			size_b0,
			size_b0 >> 20);
	}

	/* Remap FLASH according to real size */
	memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);
	memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;

	/* Re-do sizing to get full correct info */
	size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);

	flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);

#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
	/* monitor protection ON by default */
	flash_protect(FLAG_PROTECT_SET,
		      CONFIG_SYS_MONITOR_BASE,
		      CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
		      &flash_info[0]);
#endif

#ifdef	CONFIG_ENV_IS_IN_FLASH
	/* ENV protection ON by default */
	flash_protect(FLAG_PROTECT_SET,
		      CONFIG_ENV_ADDR,
		      CONFIG_ENV_ADDR+CONFIG_ENV_SIZE-1,
		      &flash_info[0]);
#endif

	/* ICU862 Board has only one Flash Bank */
	flash_info[0].size = size_b0;

	return size_b0;

}

/*-----------------------------------------------------------------------
 */
static void flash_get_offsets (ulong base, flash_info_t *info)
{
	int i;

	/* set up sector start address table */
	if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
		((info->flash_id & FLASH_TYPEMASK) == FLASH_AM033C)) {
		/* set sector offsets for uniform sector type	*/
		for (i = 0; i < info->sector_count; i++) {
			info->start[i] = base + (i * 0x00040000);
		}
	}
}

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

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

	switch (info->flash_id & FLASH_VENDMASK) {
	case FLASH_MAN_AMD:	puts ("AMD ");		break;
	case FLASH_MAN_FUJ:	puts ("FUJITSU ");	break;
	case FLASH_MAN_BM:	puts ("BRIGHT MICRO ");	break;
	default:		puts ("Unknown Vendor "); break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case FLASH_AM040:	puts ("29F040/29LV040 (4 Mbit, uniform sectors)\n");
				break;
	case FLASH_AM400B:	puts ("AM29LV400B (4 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM400T:	puts ("AM29LV400T (4 Mbit, top boot sector)\n");
				break;
	case FLASH_AM800B:	puts ("AM29LV800B (8 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM800T:	puts ("AM29LV800T (8 Mbit, top boot sector)\n");
				break;
	case FLASH_AM160B:	puts ("AM29LV160B (16 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM160T:	puts ("AM29LV160T (16 Mbit, top boot sector)\n");
				break;
	case FLASH_AM320B:	puts ("AM29LV320B (32 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM320T:	puts ("AM29LV320T (32 Mbit, top boot sector)\n");
				break;
	case FLASH_AM033C:	puts ("AM29LV033C (32 Mbit)\n");
				break;
	default:		puts ("Unknown Chip Type\n");
				break;
	}

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

	puts ("  Sector Start Addresses:");

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

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

	puts ("\n");
}

/*-----------------------------------------------------------------------
 */

/*
 * The following code cannot be run from FLASH!
 */

static ulong flash_get_size (vu_long *addr, flash_info_t *info)
{
	short i;
#if 0
	ulong base = (ulong)addr;
#endif
	uchar value;

	/* Write auto select command: read Manufacturer ID */
#if 0
	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;
	addr[0x0555] = 0x00900090;
#else
	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;
	addr[0x0555] = 0x90909090;
#endif

	value = addr[0];

	switch (value + (value << 16)) {
	case AMD_MANUFACT:
		info->flash_id = FLASH_MAN_AMD;
		break;

	case FUJ_MANUFACT:
		info->flash_id = FLASH_MAN_FUJ;
		break;

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

	value = addr[1];			/* device ID		*/

	switch ((unsigned long)value) {
	case AMD_ID_F040B:
		info->flash_id += FLASH_AM040;
		info->sector_count = 8;
		info->size = 0x00200000;
		break;				/* => 2 MB		*/

	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		*/
#if 0	/* enable when device IDs are available */
	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
	case AMD_ID_LV033C:
		info->flash_id += FLASH_AM033C;
		info->sector_count = 64;
		info->size = 0x01000000;
		break;				/* => 16Mb		*/
	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
	flash_get_offsets ((ulong)addr, &flash_info[0]);
#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]);
#if 1
		/* We don't know why it happens, but on ICU Board	*
		 * for AMD29033C flash we need to resend the command of	*
		 * reading flash protection for upper 8 Mb of flash	*/
		if ( i == 32 ) {
			addr[0x0555] = 0xAAAAAAAA;
			addr[0x02AA] = 0x55555555;
			addr[0x0555] = 0x90909090;
		}
#endif
		info->protect[i] = addr[2] & 1;
	}

	/*
	 * Prevent writes to uninitialized FLASH.
	 */
	if (info->flash_id != FLASH_UNKNOWN) {
		addr = (volatile unsigned long *)info->start[0];
#if 0
		*addr = 0x00F000F0;	/* reset bank */
#else
		*addr = 0xF0F0F0F0;	/* reset bank */
#endif
	}

	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) {
			puts ("- missing\n");
		} else {
			puts ("- no sectors to erase\n");
		}
		return 1;
	}

	if ((info->flash_id == FLASH_UNKNOWN) ||
	    (info->flash_id > FLASH_AMD_COMP)) {
		puts ("Can't erase unknown flash type - aborted\n");
		return 1;
	}

	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 {
		puts ("\n");
	}

	l_sect = -1;

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

#if 0
	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;
	addr[0x0555] = 0x00800080;
	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;
#else
	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;
	addr[0x0555] = 0x80808080;
	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;
#endif

	/* 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]);
#if 0
			addr[0] = 0x00300030;
#else
			addr[0] = 0x30303030;
#endif
			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]);
#if 0
	while ((addr[0] & 0x00800080) != 0x00800080)
#else
	while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
#endif
	{
		if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
			puts ("Timeout\n");
			return 1;
		}
		/* 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];
#if 0
	addr[0] = 0x00F000F0;	/* reset bank */
#else
	addr[0] = 0xF0F0F0F0;	/* reset bank */
#endif

	puts (" 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 (2);
	}
	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts();

#if 0
	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;
	addr[0x0555] = 0x00A000A0;
#else
	addr[0x0555] = 0xAAAAAAAA;
	addr[0x02AA] = 0x55555555;
	addr[0x0555] = 0xA0A0A0A0;
#endif

	*((vu_long *)dest) = data;

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

	/* data polling for D7 */
	start = get_timer (0);
#if 0
	while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080))
#else
	while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080))
#endif
	{
		if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
			return (1);
		}
	}
	return (0);
}

/*-----------------------------------------------------------------------
 */
Commit	Line	Data
affae2bf WD	1	/*
	2	* (C) Copyright 2001
	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
	25	/*-----------------------------------------------------------------------
	26	* Functions
	27	*/
	28	static ulong flash_get_size (vu_long addr, flash_info_t info);
	29	static int write_word (flash_info_t *info, ulong dest, ulong data);
	30	static void flash_get_offsets (ulong base, flash_info_t *info);
	31
	32	/*-----------------------------------------------------------------------
	33	*/
	34
	35	unsigned long flash_init (void)
	36	{
6d0f6bcf	37	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
affae2bf	38	volatile memctl8xx_t *memctl = &immap->im_memctl;
13039eb1	39	unsigned long size_b0;
affae2bf WD	40	int i;
	41
	42	/* Init: no FLASHes known */
13039eb1	43	for (i=0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
affae2bf	44	flash_info[i].flash_id = FLASH_UNKNOWN;
affae2bf WD	45
	46	/* Static FLASH Bank configuration here - FIXME XXX */
	47
	48	size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
	49
	50	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
	51	printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
	52	size_b0,
	53	size_b0 >> 20);
	54	}
	55
affae2bf	56	/* Remap FLASH according to real size */
6d0f6bcf JCPV	57	memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH \| (-size_b0 & OR_AM_MSK);
6d0f6bcf JCPV	58	memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) \| BR_MS_GPCM \| BR_V;
affae2bf WD	59
affae2bf WD	60	/* Re-do sizing to get full correct info */
6d0f6bcf	61	size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);
affae2bf	62
6d0f6bcf	63	flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
affae2bf	64
6d0f6bcf	65	#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
affae2bf WD	66	/* monitor protection ON by default */
affae2bf WD	67	flash_protect(FLAG_PROTECT_SET,
6d0f6bcf JCPV	68	CONFIG_SYS_MONITOR_BASE,
6d0f6bcf JCPV	69	CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
affae2bf WD	70	&flash_info[0]);
	71	#endif
	72
5a1aceb0	73	#ifdef CONFIG_ENV_IS_IN_FLASH
affae2bf WD	74	/* ENV protection ON by default */
affae2bf WD	75	flash_protect(FLAG_PROTECT_SET,
0e8d1586 JCPV	76	CONFIG_ENV_ADDR,
0e8d1586 JCPV	77	CONFIG_ENV_ADDR+CONFIG_ENV_SIZE-1,
affae2bf WD	78	&flash_info[0]);
	79	#endif
	80
	81	/* ICU862 Board has only one Flash Bank */
affae2bf	82	flash_info[0].size = size_b0;
affae2bf	83
13039eb1	84	return size_b0;
affae2bf WD	85
	86	}
	87
	88	/*-----------------------------------------------------------------------
	89	*/
	90	static void flash_get_offsets (ulong base, flash_info_t *info)
	91	{
	92	int i;
	93
	94	/* set up sector start address table */
	95	if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) \|\|
	96	((info->flash_id & FLASH_TYPEMASK) == FLASH_AM033C)) {
	97	/* set sector offsets for uniform sector type */
	98	for (i = 0; i < info->sector_count; i++) {
	99	info->start[i] = base + (i * 0x00040000);
	100	}
	101	}
	102	}
	103
	104	/*-----------------------------------------------------------------------
	105	*/
	106	void flash_print_info (flash_info_t *info)
	107	{
	108	int i;
	109
	110	if (info->flash_id == FLASH_UNKNOWN) {
	111	puts ("missing or unknown FLASH type\n");
	112	return;
	113	}
	114
	115	switch (info->flash_id & FLASH_VENDMASK) {
	116	case FLASH_MAN_AMD: puts ("AMD "); break;
	117	case FLASH_MAN_FUJ: puts ("FUJITSU "); break;
	118	case FLASH_MAN_BM: puts ("BRIGHT MICRO "); break;
	119	default: puts ("Unknown Vendor "); break;
	120	}
	121
	122	switch (info->flash_id & FLASH_TYPEMASK) {
	123	case FLASH_AM040: puts ("29F040/29LV040 (4 Mbit, uniform sectors)\n");
	124	break;
	125	case FLASH_AM400B: puts ("AM29LV400B (4 Mbit, bottom boot sect)\n");
	126	break;
	127	case FLASH_AM400T: puts ("AM29LV400T (4 Mbit, top boot sector)\n");
	128	break;
	129	case FLASH_AM800B: puts ("AM29LV800B (8 Mbit, bottom boot sect)\n");
	130	break;
	131	case FLASH_AM800T: puts ("AM29LV800T (8 Mbit, top boot sector)\n");
	132	break;
	133	case FLASH_AM160B: puts ("AM29LV160B (16 Mbit, bottom boot sect)\n");
	134	break;
	135	case FLASH_AM160T: puts ("AM29LV160T (16 Mbit, top boot sector)\n");
	136	break;
	137	case FLASH_AM320B: puts ("AM29LV320B (32 Mbit, bottom boot sect)\n");
	138	break;
	139	case FLASH_AM320T: puts ("AM29LV320T (32 Mbit, top boot sector)\n");
	140	break;
	141	case FLASH_AM033C: puts ("AM29LV033C (32 Mbit)\n");
	142	break;
	143	default: puts ("Unknown Chip Type\n");
	144	break;
	145	}
	146
	147	printf (" Size: %ld MB in %d Sectors\n",
	148	info->size >> 20, info->sector_count);
149
150	puts (" Sector Start Addresses:");
151
152	for (i=0; i<info->sector_count; ++i) {
153	if ((i % 5) == 0) {
154	puts ("\n ");
155	}
156
157	printf (" %08lX%s",
158	info->start[i],
159	info->protect[i] ? " (RO)" : " "
160	);
161	}
162
163	puts ("\n");
164	}
165
166	/*-----------------------------------------------------------------------
167	*/
168
169	/*
170	* The following code cannot be run from FLASH!
171	*/
172
173	static ulong flash_get_size (vu_long addr, flash_info_t info)
174	{
175	short i;
176	#if 0
177	ulong base = (ulong)addr;
178	#endif
179	uchar value;
180
181	/* Write auto select command: read Manufacturer ID */
182	#if 0
183	addr[0x0555] = 0x00AA00AA;
184	addr[0x02AA] = 0x00550055;
185	addr[0x0555] = 0x00900090;
186	#else
187	addr[0x0555] = 0xAAAAAAAA;
188	addr[0x02AA] = 0x55555555;
189	addr[0x0555] = 0x90909090;
190	#endif
191
192	value = addr[0];
193
194	switch (value + (value << 16)) {
195	case AMD_MANUFACT:
196	info->flash_id = FLASH_MAN_AMD;
197	break;
198
199	case FUJ_MANUFACT:
200	info->flash_id = FLASH_MAN_FUJ;
201	break;
202
203	default:
204	info->flash_id = FLASH_UNKNOWN;
205	info->sector_count = 0;
206	info->size = 0;
207	break;
208	}
209
210	value = addr[1]; /* device ID */
211
77ddac94	212	switch ((unsigned long)value) {
affae2bf WD	213	case AMD_ID_F040B:
	214	info->flash_id += FLASH_AM040;
	215	info->sector_count = 8;
	216	info->size = 0x00200000;
	217	break; /* => 2 MB */
	218
	219	case AMD_ID_LV400T:
	220	info->flash_id += FLASH_AM400T;
	221	info->sector_count = 11;
	222	info->size = 0x00100000;
	223	break; /* => 1 MB */
	224
	225	case AMD_ID_LV400B:
	226	info->flash_id += FLASH_AM400B;
	227	info->sector_count = 11;
	228	info->size = 0x00100000;
	229	break; /* => 1 MB */
	230
	231	case AMD_ID_LV800T:
	232	info->flash_id += FLASH_AM800T;
	233	info->sector_count = 19;
	234	info->size = 0x00200000;
	235	break; /* => 2 MB */
	236
	237	case AMD_ID_LV800B:
	238	info->flash_id += FLASH_AM800B;
	239	info->sector_count = 19;
	240	info->size = 0x00200000;
	241	break; /* => 2 MB */
	242
	243	case AMD_ID_LV160T:
	244	info->flash_id += FLASH_AM160T;
	245	info->sector_count = 35;
	246	info->size = 0x00400000;
	247	break; /* => 4 MB */
	248
	249	case AMD_ID_LV160B:
	250	info->flash_id += FLASH_AM160B;
	251	info->sector_count = 35;
	252	info->size = 0x00400000;
	253	break; /* => 4 MB */
	254	#if 0 /* enable when device IDs are available */
	255	case AMD_ID_LV320T:
	256	info->flash_id += FLASH_AM320T;
	257	info->sector_count = 67;
	258	info->size = 0x00800000;
	259	break; /* => 8 MB */
	260
	261	case AMD_ID_LV320B:
	262	info->flash_id += FLASH_AM320B;
	263	info->sector_count = 67;
	264	info->size = 0x00800000;
	265	break; /* => 8 MB */
	266	#endif
	267	case AMD_ID_LV033C:
	268	info->flash_id += FLASH_AM033C;
	269	info->sector_count = 64;
	270	info->size = 0x01000000;
	271	break; /* => 16Mb */
	272	default:
	273	info->flash_id = FLASH_UNKNOWN;
	274	return (0); /* => no or unknown flash */
	275
	276	}
277
278	#if 0
279	/* set up sector start address table */
280	if (info->flash_id & FLASH_BTYPE) {
281	/* set sector offsets for bottom boot block type */
282	info->start[0] = base + 0x00000000;
283	info->start[1] = base + 0x00008000;
284	info->start[2] = base + 0x0000C000;
285	info->start[3] = base + 0x00010000;
286	for (i = 4; i < info->sector_count; i++) {
287	info->start[i] = base + (i * 0x00020000) - 0x00060000;
288	}
289	} else {
290	/* set sector offsets for top boot block type */
291	i = info->sector_count - 1;
292	info->start[i--] = base + info->size - 0x00008000;
293	info->start[i--] = base + info->size - 0x0000C000;
294	info->start[i--] = base + info->size - 0x00010000;
295	for (; i >= 0; i--) {
296	info->start[i] = base + i * 0x00020000;
297	}
298	}
299	#else
300	flash_get_offsets ((ulong)addr, &flash_info[0]);
301	#endif
302
303	/* check for protected sectors */
304	for (i = 0; i < info->sector_count; i++) {
305	/* read sector protection at sector address, (A7 .. A0) = 0x02 */
306	/* D0 = 1 if protected */
307	addr = (volatile unsigned long *)(info->start[i]);
308	#if 1
309	/* We don't know why it happens, but on ICU Board *
310	* for AMD29033C flash we need to resend the command of *
311	* reading flash protection for upper 8 Mb of flash */
312	if ( i == 32 ) {
313	addr[0x0555] = 0xAAAAAAAA;
314	addr[0x02AA] = 0x55555555;
315	addr[0x0555] = 0x90909090;
316	}
317	#endif
318	info->protect[i] = addr[2] & 1;
319	}
320
321	/*
322	* Prevent writes to uninitialized FLASH.
323	*/
324	if (info->flash_id != FLASH_UNKNOWN) {
325	addr = (volatile unsigned long *)info->start[0];
326	#if 0
327	addr = 0x00F000F0; / reset bank */
328	#else
329	addr = 0xF0F0F0F0; / reset bank */
330	#endif
331	}
332
333	return (info->size);
334	}
335
336
337	/*-----------------------------------------------------------------------
338	*/
339
340	int flash_erase (flash_info_t *info, int s_first, int s_last)
341	{
342	vu_long addr = (vu_long)(info->start[0]);
343	int flag, prot, sect, l_sect;
344	ulong start, now, last;
345
346	if ((s_first < 0) \|\| (s_first > s_last)) {
347	if (info->flash_id == FLASH_UNKNOWN) {
348	puts ("- missing\n");
349	} else {
350	puts ("- no sectors to erase\n");
351	}
352	return 1;
353	}
354
355	if ((info->flash_id == FLASH_UNKNOWN) \|\|
356	(info->flash_id > FLASH_AMD_COMP)) {
357	puts ("Can't erase unknown flash type - aborted\n");
358	return 1;
359	}
360
361	prot = 0;
362	for (sect=s_first; sect<=s_last; ++sect) {
363	if (info->protect[sect]) {
364	prot++;
365	}
366	}
367
368	if (prot) {
369	printf ("- Warning: %d protected sectors will not be erased!\n",
370	prot);
371	} else {
372	puts ("\n");
373	}
374
375	l_sect = -1;
376
377	/* Disable interrupts which might cause a timeout here */
378	flag = disable_interrupts();
379
380	#if 0
381	addr[0x0555] = 0x00AA00AA;
382	addr[0x02AA] = 0x00550055;
383	addr[0x0555] = 0x00800080;
384	addr[0x0555] = 0x00AA00AA;
385	addr[0x02AA] = 0x00550055;
386	#else
387	addr[0x0555] = 0xAAAAAAAA;
388	addr[0x02AA] = 0x55555555;
389	addr[0x0555] = 0x80808080;
390	addr[0x0555] = 0xAAAAAAAA;
391	addr[0x02AA] = 0x55555555;
392	#endif
393
394	/* Start erase on unprotected sectors */
395	for (sect = s_first; sect<=s_last; sect++) {
396	if (info->protect[sect] == 0) { /* not protected */
397	addr = (vu_long*)(info->start[sect]);
398	#if 0
399	addr[0] = 0x00300030;
400	#else
401	addr[0] = 0x30303030;
402	#endif
403	l_sect = sect;
404	}
405	}
406
407	/* re-enable interrupts if necessary */
408	if (flag)
409	enable_interrupts();
410
411	/* wait at least 80us - let's wait 1 ms */
412	udelay (1000);
413
414	/*
415	* We wait for the last triggered sector
416	*/
417	if (l_sect < 0)
418	goto DONE;
419
420	start = get_timer (0);
421	last = start;
422	addr = (vu_long*)(info->start[l_sect]);
423	#if 0
424	while ((addr[0] & 0x00800080) != 0x00800080)
425	#else
426	while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
427	#endif
428	{
6d0f6bcf	429	if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
affae2bf WD	430	puts ("Timeout\n");
	431	return 1;
	432	}
	433	/* show that we're waiting */
	434	if ((now - last) > 1000) { /* every second */
	435	putc ('.');
	436	last = now;
	437	}
	438	}
	439
	440	DONE:
	441	/* reset to read mode */
	442	addr = (volatile unsigned long *)info->start[0];
	443	#if 0
	444	addr[0] = 0x00F000F0; /* reset bank */
	445	#else
	446	addr[0] = 0xF0F0F0F0; /* reset bank */
	447	#endif
	448
	449	puts (" done\n");
	450	return 0;
	451	}
	452
	453	/*-----------------------------------------------------------------------
	454	* Copy memory to flash, returns:
	455	* 0 - OK
	456	* 1 - write timeout
	457	* 2 - Flash not erased
	458	*/
	459
	460	int write_buff (flash_info_t info, uchar src, ulong addr, ulong cnt)
	461	{
	462	ulong cp, wp, data;
	463	int i, l, rc;
	464
	465	wp = (addr & ~3); /* get lower word aligned address */
	466
	467	/*
	468	* handle unaligned start bytes
	469	*/
	470	if ((l = addr - wp) != 0) {
	471	data = 0;
	472	for (i=0, cp=wp; i<l; ++i, ++cp) {
	473	data = (data << 8) \| ((uchar )cp);
	474	}
	475	for (; i<4 && cnt>0; ++i) {
	476	data = (data << 8) \| *src++;
	477	--cnt;
	478	++cp;
	479	}
	480	for (; cnt==0 && i<4; ++i, ++cp) {
	481	data = (data << 8) \| ((uchar )cp);
	482	}
	483
	484	if ((rc = write_word(info, wp, data)) != 0) {
	485	return (rc);
	486	}
	487	wp += 4;
	488	}
	489
	490	/*
	491	* handle word aligned part
	492	*/
	493	while (cnt >= 4) {
494	data = 0;
495	for (i=0; i<4; ++i) {
496	data = (data << 8) \| *src++;
497	}
498	if ((rc = write_word(info, wp, data)) != 0) {
499	return (rc);
500	}
501	wp += 4;
502	cnt -= 4;
503	}
504
505	if (cnt == 0) {
506	return (0);
507	}
508
509	/*
510	* handle unaligned tail bytes
511	*/
512	data = 0;
513	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
514	data = (data << 8) \| *src++;
515	--cnt;
516	}
517	for (; i<4; ++i, ++cp) {
518	data = (data << 8) \| ((uchar )cp);
519	}
520
521	return (write_word(info, wp, data));
522	}
523
524	/*-----------------------------------------------------------------------
525	* Write a word to Flash, returns:
526	* 0 - OK
527	* 1 - write timeout
528	* 2 - Flash not erased
529	*/
530	static int write_word (flash_info_t *info, ulong dest, ulong data)
531	{
532	vu_long addr = (vu_long)(info->start[0]);
533	ulong start;
534	int flag;
535
536	/* Check if Flash is (sufficiently) erased */
537	if ((((vu_long )dest) & data) != data) {
538	return (2);
539	}
540	/* Disable interrupts which might cause a timeout here */
541	flag = disable_interrupts();
542
543	#if 0
544	addr[0x0555] = 0x00AA00AA;
545	addr[0x02AA] = 0x00550055;
546	addr[0x0555] = 0x00A000A0;
547	#else
548	addr[0x0555] = 0xAAAAAAAA;
549	addr[0x02AA] = 0x55555555;
550	addr[0x0555] = 0xA0A0A0A0;
551	#endif
552
553	((vu_long )dest) = data;
554
555	/* re-enable interrupts if necessary */
556	if (flag)
557	enable_interrupts();
558
559	/* data polling for D7 */
560	start = get_timer (0);
561	#if 0
562	while ((((vu_long )dest) & 0x00800080) != (data & 0x00800080))
563	#else
564	while ((((vu_long )dest) & 0x80808080) != (data & 0x80808080))
565	#endif
566	{
6d0f6bcf	567	if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
affae2bf WD	568	return (1);
	569	}
	570	}
	571	return (0);
	572	}
	573
	574	/*-----------------------------------------------------------------------
	575	*/