xpedite1k: Use standard CFI flash driver

Using the CFI flash driver will allow write access to the 16MB Intel
StrataFlash present on the XPedite1000.  The 512KB socketed (non
CFI-compliant flash) will no longer be writable.

The mapping of the 16MB Strata flash was moved to 0xff000000 and the
512KB AMD socketed flash was moved to 0xfe000000.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Stefan Roese <sr@denx.de>

3 files changed, 5 insertions, 614 deletions

diff --git a/board/xpedite1k/Makefile b/board/xpedite1k/Makefile
index 6ab1a26..b93f2c3 100644
--- a/board/xpedite1k/Makefile
+++ b/board/xpedite1k/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	= $(BOARD).o flash.o
+COBJS	= $(BOARD).o
 SOBJS	= init.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/board/xpedite1k/flash.c b/board/xpedite1k/flash.c
deleted file mode 100644
index 0711931..0000000
--- a/board/xpedite1k/flash.c
+++ /dev/null
@@ -1,607 +0,0 @@
-/*
- * (C) Copyright 2002-2004
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
- * 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. - clh@net1plus.com
- */
-
-/*
- * Ported to XPedite1000, 1/2 mb boot flash only
- * Travis B. Sawyer, <travis.sawyer@sandburst.com>
- */
-
-#include <common.h>
-#include <ppc4xx.h>
-#include <asm/processor.h>
-
-
-#undef DEBUG
-#ifdef DEBUG
-#define DEBUGF(x...) printf(x)
-#else
-#define DEBUGF(x...)
-#endif /* DEBUG */
-
-#define BOOT_SMALL_FLASH	32		/* 00100000 */
-#define FLASH_ONBD_N		2		/* 00000010 */
-#define FLASH_SRAM_SEL		1		/* 00000001 */
-
-#define BOOT_SMALL_FLASH_VAL	4
-#define FLASH_ONBD_N_VAL	2
-#define FLASH_SRAM_SEL_VAL	1
-
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
-
-static unsigned long flash_addr_table[8][CONFIG_SYS_MAX_FLASH_BANKS] = {
-	{0xfff80000},	/* 0:000: configuraton 3 */
-	{0xfff90000},	/* 1:001: configuraton 4 */
-	{0xfffa0000},	/* 2:010: configuraton 7 */
-	{0xfffb0000},	/* 3:011: configuraton 8 */
-	{0xfffc0000},	/* 4:100: configuraton 1 */
-	{0xfffd0000},	/* 5:101: configuraton 2 */
-	{0xfffe0000},	/* 6:110: configuraton 5 */
-	{0xffff0000}	/* 7:111: configuraton 6 */
-};
-
-/*-----------------------------------------------------------------------
- * 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);
-
-
-#ifdef CONFIG_XPEDITE1K
-#define ADDR0		0x5555
-#define ADDR1		0x2aaa
-#define FLASH_WORD_SIZE unsigned char
-#endif
-
-/*-----------------------------------------------------------------------
- */
-
-unsigned long flash_init (void)
-{
-	unsigned long total_b = 0;
-	unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
-	unsigned short index = 0;
-	int i;
-
-
-	DEBUGF("\n");
-	DEBUGF("FLASH: Index: %d\n", index);
-
-	/* Init: no FLASHes known */
-	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
-		flash_info[i].flash_id = FLASH_UNKNOWN;
-		flash_info[i].sector_count = -1;
-		flash_info[i].size = 0;
-
-		/* check whether the address is 0 */
-		if (flash_addr_table[index][i] == 0) {
-			continue;
-		}
-
-		/* call flash_get_size() to initialize sector address */
-		size_b[i] = flash_get_size(
-			(vu_long *)flash_addr_table[index][i], &flash_info[i]);
-		flash_info[i].size = size_b[i];
-		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
-			printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
-				i, size_b[i], size_b[i]<<20);
-			flash_info[i].sector_count = -1;
-			flash_info[i].size = 0;
-		}
-
-		total_b += flash_info[i].size;
-	}
-
-	return total_b;
-}
-
-
-/*-----------------------------------------------------------------------
- */
-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_FUJ:	printf ("FUJITSU ");		break;
-	case FLASH_MAN_SST:	printf ("SST ");		break;
-	default:		printf ("Unknown Vendor ");	break;
-	}
-
-	switch (info->flash_id & FLASH_TYPEMASK) {
-	case FLASH_AMD016:	printf ("AM29F016D (16 Mbit, uniform sector size)\n");
-		break;
-	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_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_SST800A:	printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
-		break;
-	case FLASH_SST160A:	printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\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;
-	FLASH_WORD_SIZE value;
-	ulong base = (ulong)addr;
-	volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;
-
-	DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr );
-
-	/* Write auto select command: read Manufacturer ID */
-	udelay(10000);
-	addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
-	udelay(1000);
-	addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
-	udelay(1000);
-	addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
-	udelay(1000);
-
-#ifdef CONFIG_ADCIOP
-	value = addr2[2];
-#else
-	value = addr2[0];
-#endif
-
-	DEBUGF("FLASH MANUFACT: %x\n", value);
-
-	switch (value) {
-	case (FLASH_WORD_SIZE)AMD_MANUFACT:
-		info->flash_id = FLASH_MAN_AMD;
-		break;
-	case (FLASH_WORD_SIZE)FUJ_MANUFACT:
-		info->flash_id = FLASH_MAN_FUJ;
-		break;
-	case (FLASH_WORD_SIZE)SST_MANUFACT:
-		info->flash_id = FLASH_MAN_SST;
-		break;
-	case (FLASH_WORD_SIZE)STM_MANUFACT:
-		info->flash_id = FLASH_MAN_STM;
-		break;
-	default:
-		info->flash_id = FLASH_UNKNOWN;
-		info->sector_count = 0;
-		info->size = 0;
-		return (0);			/* no or unknown flash	*/
-	}
-
-#ifdef CONFIG_ADCIOP
-	value = addr2[0];			/* device ID		*/
-	debug ("\ndev_code=%x\n", value);
-#else
-	value = addr2[1];			/* device ID		*/
-#endif
-
-	DEBUGF("\nFLASH DEVICEID: %x\n", value);
-
-	switch (value) {
-	case (FLASH_WORD_SIZE)AMD_ID_LV040B:
-		info->flash_id += FLASH_AM040;
-		info->sector_count = 8;
-		info->size = 0x00080000; /* => 512 kb */
-		break;
-
-	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_AM040) ||
-		    (info->flash_id  == FLASH_AMD016)) {
-		for (i = 0; i < info->sector_count; i++)
-			info->start[i] = base + (i * 0x00010000);
-	} else {
-		if (info->flash_id & FLASH_BTYPE) {
-			/* set sector offsets for bottom boot block type	*/
-			info->start[0] = base + 0x00000000;
-			info->start[1] = base + 0x00004000;
-			info->start[2] = base + 0x00006000;
-			info->start[3] = base + 0x00008000;
-			for (i = 4; i < info->sector_count; i++) {
-				info->start[i] = base + (i * 0x00010000) - 0x00030000;
-			}
-		} else {
-			/* set sector offsets for top boot block type		*/
-			i = info->sector_count - 1;
-			info->start[i--] = base + info->size - 0x00004000;
-			info->start[i--] = base + info->size - 0x00006000;
-			info->start[i--] = base + info->size - 0x00008000;
-			for (; i >= 0; i--) {
-				info->start[i] = base + i * 0x00010000;
-			}
-		}
-	}
-
-	/* 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 */
-#ifdef CONFIG_ADCIOP
-		addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
-		info->protect[i] = addr2[4] & 1;
-#else
-		addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
-		if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
-			info->protect[i] = 0;
-		else
-			info->protect[i] = addr2[2] & 1;
-#endif
-	}
-
-	/*
-	 * Prevent writes to uninitialized FLASH.
-	 */
-	if (info->flash_id != FLASH_UNKNOWN) {
-#if 0 /* test-only */
-#ifdef CONFIG_ADCIOP
-		addr2 = (volatile unsigned char *)info->start[0];
-		addr2[ADDR0] = 0xAA;
-		addr2[ADDR1] = 0x55;
-		addr2[ADDR0] = 0xF0;  /* reset bank */
-#else
-		addr2 = (FLASH_WORD_SIZE *)info->start[0];
-		*addr2 = (FLASH_WORD_SIZE)0x00F000F0;	/* reset bank */
-#endif
-#else /* test-only */
-		addr2 = (FLASH_WORD_SIZE *)info->start[0];
-		*addr2 = (FLASH_WORD_SIZE)0x00F000F0;	/* reset bank */
-#endif /* test-only */
-	}
-
-	return (info->size);
-}
-
-int wait_for_DQ7(flash_info_t *info, int sect)
-{
-	ulong start, now, last;
-	volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]);
-
-	start = get_timer (0);
-	last  = start;
-	while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
-		if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
-			printf ("Timeout\n");
-			return -1;
-		}
-		/* show that we're waiting */
-		if ((now - last) > 1000) {  /* every second */
-			putc ('.');
-			last = now;
-		}
-	}
-	return 0;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int	flash_erase (flash_info_t *info, int s_first, int s_last)
-{
-	volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
-	volatile FLASH_WORD_SIZE *addr2;
-	int flag, prot, sect, l_sect;
-	int i;
-
-	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 1;
-	}
-
-	if (info->flash_id == FLASH_UNKNOWN) {
-		printf ("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 {
-		printf ("\n");
-	}
-
-	l_sect = -1;
-
-	/* Disable interrupts which might cause a timeout here */
-	flag = disable_interrupts();
-
-	/* Start erase on unprotected sectors */
-	for (sect = s_first; sect<=s_last; sect++) {
-		if (info->protect[sect] == 0) { /* not protected */
-			addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
-			printf("Erasing sector %p\n", addr2);
-
-			if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
-				addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
-				addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
-				addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
-				addr2[0] = (FLASH_WORD_SIZE)0x00500050;	 /* block erase */
-				for (i=0; i<50; i++)
-					udelay(1000);  /* wait 1 ms */
-			} else {
-				addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
-				addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
-				addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
-				addr2[0] = (FLASH_WORD_SIZE)0x00300030;	 /* sector erase */
-			}
-			l_sect = sect;
-			/*
-			 * Wait for each sector to complete, it's more
-			 * reliable.  According to AMD Spec, you must
-			 * issue all erase commands within a specified
-			 * timeout.  This has been seen to fail, especially
-			 * if printf()s are included (for debug)!!
-			 */
-			wait_for_DQ7(info, sect);
-		}
-	}
-
-	/* re-enable interrupts if necessary */
-	if (flag)
-		enable_interrupts();
-
-	/* wait at least 80us - let's wait 1 ms */
-	udelay (1000);
-
-#if 0
-	/*
-	 * We wait for the last triggered sector
-	 */
-	if (l_sect < 0)
-		goto DONE;
-	wait_for_DQ7(info, l_sect);
-
-DONE:
-#endif
-	/* reset to read mode */
-	addr = (FLASH_WORD_SIZE *)info->start[0];
-	addr[0] = (FLASH_WORD_SIZE)0x00F000F0;	/* 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)
-{
-	volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) (info->start[0]);
-	volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest;
-	volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
-	ulong start;
-	int i;
-
-	/* Check if Flash is (sufficiently) erased */
-	if ((*((volatile FLASH_WORD_SIZE *) dest) &
-	     (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
-		return (2);
-	}
-
-	for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
-		int flag;
-
-		/* Disable interrupts which might cause a timeout here */
-		flag = disable_interrupts ();
-
-		addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
-		addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
-		addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0;
-
-		dest2[i] = data2[i];
-
-		/* re-enable interrupts if necessary */
-		if (flag)
-			enable_interrupts ();
-
-		/* data polling for D7 */
-		start = get_timer (0);
-		while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) !=
-		       (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
-
-			if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
-				return (1);
-			}
-		}
-	}
-
-	return (0);
-}
-
-/*-----------------------------------------------------------------------
- */
diff --git a/board/xpedite1k/xpedite1k.c b/board/xpedite1k/xpedite1k.c
index 044aeb9..bbbcdb1 100644
--- a/board/xpedite1k/xpedite1k.c
+++ b/board/xpedite1k/xpedite1k.c
@@ -50,12 +50,10 @@ int board_early_init_f(void)
 	/*--------------------------------------------------------------------
 	 * Setup the external bus controller/chip selects
 	 *-------------------------------------------------------------------*/
-
-	/* set the bus controller */
-	mtebc (pb0ap, 0x04055200);	/* FLASH/SRAM */
-	mtebc (pb0cr, 0xfff18000);	/* BAS=0xfff 1MB R/W 8-bit */
-	mtebc (pb1ap, 0x04055200);	/* FLASH/SRAM */
-	mtebc (pb1cr, 0xfe098000);	/* BAS=0xff8 16MB R/W 8-bit */
+	mtebc (pb0ap, 0x04055200);	/* 16MB Strata FLASH */
+	mtebc (pb0cr, 0xff098000);	/* BAS=0xff0 16MB R/W 8-bit */
+	mtebc (pb1ap, 0x04055200);	/* 512KB Socketed AMD FLASH */
+	mtebc (pb1cr, 0xfe018000);	/* BAS=0xfe0 1MB R/W 8-bit */
 
 	/*--------------------------------------------------------------------
 	 * Setup the interrupt controller polarities, triggers, etc.