FSL: Move board/mpc8260ads under board/freescale

Signed-off-by: Jon Loeliger <jdl@freescale.com>

1 files changed, 492 insertions, 0 deletions

diff --git a/board/freescale/mpc8260ads/flash.c b/board/freescale/mpc8260ads/flash.c
new file mode 100644
index 0000000..59997aa
--- /dev/null
+++ b/board/freescale/mpc8260ads/flash.c
@@ -0,0 +1,492 @@
+/*
+ * (C) Copyright 2000, 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2001, Stuart Hughes, Lineo Inc, stuarth@lineo.com
+ * Add support the Sharp chips on the mpc8260ads.
+ * I started with board/ip860/flash.c and made changes I found in
+ * the MTD project by David Schleef.
+ *
+ * (C) Copyright 2003 Arabella Software Ltd.
+ * Yuli Barcohen <yuli@arabellasw.com>
+ * Re-written to support multi-bank flash SIMMs.
+ * Added support for real protection and JFFS2.
+ *
+ * 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>
+
+/* Intel-compatible flash ID */
+#define INTEL_COMPAT  0x89898989
+#define INTEL_ALT     0xB0B0B0B0
+
+/* Intel-compatible flash commands */
+#define INTEL_PROGRAM 0x10101010
+#define INTEL_ERASE   0x20202020
+#define INTEL_CLEAR   0x50505050
+#define INTEL_LOCKBIT 0x60606060
+#define INTEL_PROTECT 0x01010101
+#define INTEL_STATUS  0x70707070
+#define INTEL_READID  0x90909090
+#define INTEL_CONFIRM 0xD0D0D0D0
+#define INTEL_RESET   0xFFFFFFFF
+
+/* Intel-compatible flash status bits */
+#define INTEL_FINISHED 0x80808080
+#define INTEL_OK       0x80808080
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+/*-----------------------------------------------------------------------
+ * This board supports 32-bit wide flash SIMMs (4x8-bit configuration.)
+ * Up to 32MB of flash supported (up to 4 banks.)
+ * BCSR is used for flash presence detect (page 4-65 of the User's Manual)
+ *
+ * The following code can not run from flash!
+ */
+unsigned long flash_init (void)
+{
+	ulong size = 0, sect_start, sect_size = 0, bank_size;
+	ushort sect_count = 0;
+	int i, j, nbanks;
+	vu_long *addr = (vu_long *)CFG_FLASH_BASE;
+	vu_long *bcsr = (vu_long *)CFG_BCSR;
+
+	switch (bcsr[2] & 0xF) {
+	case 0:
+		nbanks = 4;
+		break;
+	case 1:
+		nbanks = 2;
+		break;
+	case 2:
+		nbanks = 1;
+		break;
+	default:		/* Unsupported configurations */
+		nbanks = CFG_MAX_FLASH_BANKS;
+	}
+
+	if (nbanks > CFG_MAX_FLASH_BANKS)
+		nbanks = CFG_MAX_FLASH_BANKS;
+
+	for (i = 0; i < nbanks; i++) {
+		*addr = INTEL_READID;	/* Read Intelligent Identifier */
+		if ((addr[0] == INTEL_COMPAT) || (addr[0] == INTEL_ALT)) {
+			switch (addr[1]) {
+			case SHARP_ID_28F016SCL:
+			case SHARP_ID_28F016SCZ:
+				flash_info[i].flash_id = FLASH_MAN_SHARP | FLASH_LH28F016SCT;
+				sect_count = 32;
+				sect_size = 0x40000;
+				break;
+			default:
+				flash_info[i].flash_id = FLASH_UNKNOWN;
+				sect_count = CFG_MAX_FLASH_SECT;
+				sect_size =
+				   CFG_FLASH_SIZE / CFG_MAX_FLASH_BANKS / CFG_MAX_FLASH_SECT;
+			}
+		}
+		else
+			flash_info[i].flash_id = FLASH_UNKNOWN;
+		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+			printf("### Unknown flash ID %08lX %08lX at address %08lX ###\n",
+			       addr[0], addr[1], (ulong)addr);
+			size = 0;
+			*addr = INTEL_RESET; /* Reset bank to Read Array mode */
+			break;
+		}
+		flash_info[i].sector_count = sect_count;
+		flash_info[i].size = bank_size = sect_size * sect_count;
+		size += bank_size;
+		sect_start = (ulong)addr;
+		for (j = 0; j < sect_count; j++) {
+			addr = (vu_long *)sect_start;
+			flash_info[i].start[j]   = sect_start;
+			flash_info[i].protect[j] = (addr[2] == 0x01010101);
+			sect_start += sect_size;
+		}
+		*addr = INTEL_RESET; /* Reset bank to Read Array mode */
+		addr = (vu_long *)sect_start;
+	}
+
+	if (size == 0) {	/* Unknown flash, fill with hard-coded values */
+		sect_start = CFG_FLASH_BASE;
+		for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+			flash_info[i].flash_id = FLASH_UNKNOWN;
+			flash_info[i].size = CFG_FLASH_SIZE / CFG_MAX_FLASH_BANKS;
+			flash_info[i].sector_count = sect_count;
+			for (j = 0; j < sect_count; j++) {
+				flash_info[i].start[j]   = sect_start;
+				flash_info[i].protect[j] = 0;
+				sect_start += sect_size;
+			}
+		}
+		size = CFG_FLASH_SIZE;
+	}
+	else
+		for (i = nbanks; i < CFG_MAX_FLASH_BANKS; i++) {
+			flash_info[i].flash_id = FLASH_UNKNOWN;
+			flash_info[i].size = 0;
+			flash_info[i].sector_count = 0;
+		}
+
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	/* monitor protection ON by default */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_MONITOR_BASE,
+		      CFG_MONITOR_BASE+monitor_flash_len-1,
+		      &flash_info[0]);
+#endif
+
+#ifdef	CFG_ENV_IS_IN_FLASH
+	/* ENV protection ON by default */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_ENV_ADDR,
+		      CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
+		      &flash_info[0]);
+#endif
+	return (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_INTEL:	printf ("Intel ");		break;
+	case FLASH_MAN_SHARP:   printf ("Sharp ");		break;
+	default:		printf ("Unknown Vendor ");	break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_28F016SV:	printf ("28F016SV (16 Mbit, 32 x 64k)\n");
+				break;
+	case FLASH_28F160S3:	printf ("28F160S3 (16 Mbit, 32 x 512K)\n");
+				break;
+	case FLASH_28F320S3:	printf ("28F320S3 (32 Mbit, 64 x 512K)\n");
+				break;
+	case FLASH_LH28F016SCT: printf ("28F016SC (16 Mbit, 32 x 64K)\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");
+}
+
+/*-----------------------------------------------------------------------
+ */
+int	flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+	int flag, prot, 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 1;
+	}
+
+	if (    ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL)
+	     && ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_SHARP) ) {
+		printf ("Can't erase unknown flash type %08lx - aborted\n",
+			info->flash_id);
+		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");
+	}
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect<=s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			vu_long *addr = (vu_long *)(info->start[sect]);
+
+			last = start = get_timer (0);
+
+			/* Disable interrupts which might cause a timeout here */
+			flag = disable_interrupts();
+
+			/* Clear Status Register */
+			*addr = INTEL_CLEAR;
+			/* Single Block Erase Command */
+			*addr = INTEL_ERASE;
+			/* Confirm */
+			*addr = INTEL_CONFIRM;
+
+			if((info->flash_id & FLASH_TYPEMASK) != FLASH_LH28F016SCT) {
+			    /* Resume Command, as per errata update */
+			    *addr = INTEL_CONFIRM;
+			}
+
+			/* re-enable interrupts if necessary */
+			if (flag)
+				enable_interrupts();
+
+			while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) {
+				if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+					printf ("Timeout\n");
+					*addr = INTEL_RESET;	/* reset bank */
+					return 1;
+				}
+				/* show that we're waiting */
+				if ((now - last) > 1000) {	/* every second */
+					putc ('.');
+					last = now;
+				}
+			}
+
+			if (*addr != INTEL_OK) {
+				printf("Block erase failed at %08X, CSR=%08X\n",
+				       (uint)addr, (uint)*addr);
+				*addr = INTEL_RESET;	/* reset bank */
+				return 1;
+			}
+
+			/* reset to read mode */
+			*addr = INTEL_RESET;
+		}
+	}
+
+	printf (" done\n");
+	return 0;
+}
+
+/*-----------------------------------------------------------------------
+ * 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)
+{
+	ulong start;
+	int rc = 0;
+	int flag;
+	vu_long *addr = (vu_long *)dest;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*addr & data) != data) {
+		return (2);
+	}
+
+	*addr = INTEL_CLEAR; /* Clear status register */
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	/* Write Command */
+	*addr = INTEL_PROGRAM;
+
+	/* Write Data */
+	*addr = data;
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* data polling for D7 */
+	start = get_timer (0);
+	while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) {
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+			printf("Write timed out\n");
+			rc = 1;
+			break;
+		}
+	}
+	if (*addr != INTEL_OK) {
+		printf ("Write failed at %08X, CSR=%08X\n", (uint)addr, (uint)*addr);
+		rc = 1;
+	}
+
+	*addr = INTEL_RESET; /* Reset to read array mode */
+
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * 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 */
+
+	*(vu_long *)wp = INTEL_RESET; /* Reset to read array mode */
+
+	/*
+	 * 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);
+	}
+
+	rc = write_word(info, wp, data);
+
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Set/Clear sector's lock bit, returns:
+ * 0 - OK
+ * 1 - Error (timeout, voltage problems, etc.)
+ */
+int flash_real_protect(flash_info_t *info, long sector, int prot)
+{
+	ulong start;
+	int i;
+	int rc = 0;
+	vu_long *addr = (vu_long *)(info->start[sector]);
+	int flag = disable_interrupts();
+
+	*addr = INTEL_CLEAR;	/* Clear status register */
+	if (prot) {			/* Set sector lock bit */
+		*addr = INTEL_LOCKBIT;	/* Sector lock bit */
+		*addr = INTEL_PROTECT;	/* set */
+	}
+	else {				/* Clear sector lock bit */
+		*addr = INTEL_LOCKBIT;	/* All sectors lock bits */
+		*addr = INTEL_CONFIRM;	/* clear */
+	}
+
+	start = get_timer(0);
+	while ((*addr & INTEL_FINISHED) != INTEL_FINISHED) {
+		if (get_timer(start) > CFG_FLASH_UNLOCK_TOUT) {
+			printf("Flash lock bit operation timed out\n");
+			rc = 1;
+			break;
+		}
+	}
+
+	if (*addr != INTEL_OK) {
+		printf("Flash lock bit operation failed at %08X, CSR=%08X\n",
+		       (uint)addr, (uint)*addr);
+		rc = 1;
+	}
+
+	if (!rc)
+		info->protect[sector] = prot;
+
+	/*
+	 * Clear lock bit command clears all sectors lock bits, so
+	 * we have to restore lock bits of protected sectors.
+	 */
+	if (!prot)
+		for (i = 0; i < info->sector_count; i++)
+			if (info->protect[i]) {
+				addr = (vu_long *)(info->start[i]);
+				*addr = INTEL_LOCKBIT;	/* Sector lock bit */
+				*addr = INTEL_PROTECT;	/* set */
+				udelay(CFG_FLASH_LOCK_TOUT * 1000);
+			}
+
+	if (flag)
+		enable_interrupts();
+
+	*addr = INTEL_RESET;		/* Reset to read array mode */
+
+	return rc;
+}