Add the board directory for SMN42

1 files changed, 475 insertions, 0 deletions

diff --git a/board/siemens/SMN42/flash.c b/board/siemens/SMN42/flash.c
new file mode 100644
index 0000000000..7d4977e026
--- /dev/null
+++ b/board/siemens/SMN42/flash.c
@@ -0,0 +1,475 @@
+/*
+ * (C) Copyright 2006 Embedded Artists AB <www.embeddedartists.com>
+ *
+ * (C) Copyright 2007 Gary Jennejohn garyj@denx.de
+ * Modified to use the routines in cpu/arm720t/lpc2292/flash.c.
+ * Heavily modified to support the SMN42 board from Siemens
+ *
+ * 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 <asm/byteorder.h>
+#include <asm/arch/hardware.h>
+
+static unsigned long flash_addr_table[CFG_MAX_FLASH_BANKS] = CFG_FLASH_BANKS_LIST;
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+extern int lpc2292_copy_buffer_to_flash(flash_info_t *, ulong);
+extern int lpc2292_flash_erase(flash_info_t *, int, int);
+extern int lpc2292_write_buff (flash_info_t *, uchar *, ulong, ulong);
+static unsigned long ext_flash_init(void);
+static int ext_flash_erase(flash_info_t *, int, int);
+static int ext_write_buff(flash_info_t *, uchar *, ulong, ulong);
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init (void)
+{
+	int j, k;
+	ulong size = 0;
+	ulong flashbase = 0;
+
+	flash_info[0].flash_id = PHILIPS_LPC2292;
+	flash_info[0].size = 0x003E000;	/* 256 - 8 KB */
+	flash_info[0].sector_count = 17;
+	memset (flash_info[0].protect, 0, 17);
+	flashbase = 0x00000000;
+	for (j = 0, k = 0; j < 8; j++, k++) {
+		flash_info[0].start[k] = flashbase;
+		flashbase += 0x00002000;
+	}
+	for (j = 0; j < 2; j++, k++) {
+		flash_info[0].start[k] = flashbase;
+		flashbase += 0x00010000;
+	}
+	for (j = 0; j < 7; j++, k++) {
+		flash_info[0].start[k] = flashbase;
+		flashbase += 0x00002000;
+	}
+	size += flash_info[0].size;
+
+	/* Protect monitor and environment sectors */
+	flash_protect (FLAG_PROTECT_SET,
+		 0x0,
+		 0x0 + monitor_flash_len - 1,
+		 &flash_info[0]);
+
+	flash_protect (FLAG_PROTECT_SET,
+		 CFG_ENV_ADDR,
+		 CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+		 &flash_info[0]);
+
+	size += ext_flash_init();
+
+	return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t * info)
+{
+	int i;
+	int erased = 0;
+	unsigned long j;
+	unsigned long count;
+	unsigned char *p;
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case (PHILIPS_LPC2292 & FLASH_VENDMASK):
+		printf("Philips: ");
+		break;
+	case FLASH_MAN_AMD:
+		printf("AMD: ");
+		break;
+	default:
+		printf ("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case (PHILIPS_LPC2292 & FLASH_TYPEMASK):
+		printf("LPC2292 internal flash\n");
+		break;
+	case FLASH_S29GL128N:
+		printf ("S29GL128N (128 Mbit, uniform sector size)\n");
+		break;
+	default:
+		printf("Unknown Chip Type\n");
+		return;
+	}
+
+	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++) {
+		if ((i % 5) == 0) {
+			printf ("\n   ");
+		}
+		if (i < (info->sector_count - 1)) {
+			count = info->start[i+1] - info->start[i];
+		}
+		else {
+			count = info->start[0] + info->size - info->start[i];
+		}
+		p = (unsigned char*)(info->start[i]);
+		erased = 1;
+		for (j = 0; j < count; j++) {
+			if (*p != 0xFF) {
+				erased = 0;
+				break;
+			}
+			p++;
+		}
+		printf (" %08lX%s%s", info->start[i], info->protect[i] ? " RO" : "   ",
+			erased ? " E" : "  ");
+	}
+	printf ("\n");
+}
+
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+	switch (info->flash_id & FLASH_TYPEMASK) {
+		case (PHILIPS_LPC2292 & FLASH_TYPEMASK):
+			return lpc2292_flash_erase(info, s_first, s_last);
+		case FLASH_S29GL128N:
+			return ext_flash_erase(info, s_first, s_last);
+		default:
+			return ERR_PROTECTED;
+	}
+	return ERR_PROTECTED;
+}
+
+int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	switch (info->flash_id & FLASH_TYPEMASK) {
+		case (PHILIPS_LPC2292 & FLASH_TYPEMASK):
+			return lpc2292_write_buff(info, src, addr, cnt);
+		case FLASH_S29GL128N:
+			return ext_write_buff(info, src, addr, cnt);
+		default:
+			return ERR_PROG_ERROR;
+	}
+	return ERR_PROG_ERROR;
+}
+
+/*--------------------------------------------------------------------------
+ * From here on is code for the external S29GL128N taken from cam5200_flash.c
+ */
+
+#define CFG_FLASH_WORD_SIZE unsigned short
+
+static int wait_for_DQ7_32(flash_info_t * info, int sect)
+{
+	ulong start, now, last;
+	volatile CFG_FLASH_WORD_SIZE *addr =
+		(CFG_FLASH_WORD_SIZE *) (info->start[sect]);
+
+	start = get_timer(0);
+	last = start;
+	while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
+			(CFG_FLASH_WORD_SIZE) 0x00800080) {
+		if ((now = get_timer(start)) > CFG_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 ext_flash_erase(flash_info_t * info, int s_first, int s_last)
+{
+	volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
+	volatile CFG_FLASH_WORD_SIZE *addr2;
+	int flag, prot, sect, l_sect, ret;
+
+	ret = 0;
+	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!", prot);
+
+	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 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);
+
+			addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+			addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+			addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;
+			addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+			addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+			addr2[0] = (CFG_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)!!
+			 */
+			ret = wait_for_DQ7_32(info, sect);
+			if (ret) {
+				ret = ERR_PROTECTED;
+				break;
+			}
+		}
+	}
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* wait at least 80us - let's wait 1 ms */
+	udelay(1000);
+
+	/* reset to read mode */
+	addr = (CFG_FLASH_WORD_SIZE *) info->start[0];
+	addr[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;	/* reset bank */
+
+	if (ret)
+		printf(" error\n");
+	else
+		printf(" done\n");
+	return ret;
+}
+
+static ulong flash_get_size(vu_long * addr, flash_info_t * info)
+{
+	short i;
+	CFG_FLASH_WORD_SIZE value;
+	ulong base = (ulong) addr;
+	volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;
+
+	/* Write auto select command: read Manufacturer ID */
+	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+	addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;
+	udelay(1000);
+
+	value = addr2[0];
+
+	switch (value) {
+		case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:
+			info->flash_id = FLASH_MAN_AMD;
+			break;
+		default:
+			info->flash_id = FLASH_UNKNOWN;
+			info->sector_count = 0;
+			info->size = 0;
+			return (0);	/* no or unknown flash  */
+	}
+
+	value = addr2[1];	/* device ID            */
+
+	switch (value) {
+		case (CFG_FLASH_WORD_SIZE)AMD_ID_MIRROR:
+			value = addr2[14];
+			switch(value) {
+				case (CFG_FLASH_WORD_SIZE)AMD_ID_GL128N_2:
+					value = addr2[15];
+					if (value != (CFG_FLASH_WORD_SIZE)AMD_ID_GL128N_3) {
+						info->flash_id = FLASH_UNKNOWN;
+					} else {
+						info->flash_id += FLASH_S29GL128N;
+						info->sector_count = 128;
+						info->size = 0x01000000;
+					}
+					break;
+				default:
+					info->flash_id = FLASH_UNKNOWN;
+					return(0);
+			}
+			break;
+
+		default:
+			info->flash_id = FLASH_UNKNOWN;
+			return (0);	/* => no or unknown flash */
+	}
+
+	/* set up sector start address table */
+	for (i = 0; i < info->sector_count; i++)
+		info->start[i] = base + (i * 0x00020000);
+
+	/* 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 */
+		addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]);
+
+		info->protect[i] = addr2[2] & 1;
+	}
+
+	/* issue bank reset to return to read mode */
+	addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;
+
+	return (info->size);
+}
+
+static unsigned long ext_flash_init(void)
+{
+	unsigned long total_b = 0;
+	unsigned long size_b[CFG_MAX_FLASH_BANKS];
+	int i;
+
+	/* Init: no FLASHes known */
+	for (i = 1; i < CFG_MAX_FLASH_BANKS; ++i) {
+		flash_info[i].flash_id = FLASH_UNKNOWN;
+		flash_info[i].sector_count = -1;
+		flash_info[i].size = 0;
+
+		/* call flash_get_size() to initialize sector address */
+		size_b[i] = flash_get_size((vu_long *) flash_addr_table[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+1, 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;
+}
+
+static int write_word(flash_info_t * info, ulong dest, ushort data)
+{
+	volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]);
+	volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest;
+	volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) &data;
+	ulong start;
+	int flag;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*dest2 & *data2) != *data2) {
+		return (2);
+	}
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;
+	addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;
+	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00A000A0;
+	*dest2 = *data2;
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* data polling for D7 */
+	start = get_timer(0);
+	while ((*dest2 & (CFG_FLASH_WORD_SIZE) 0x00800080) !=
+			(*data2 & (CFG_FLASH_WORD_SIZE) 0x00800080)) {
+
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+			printf("WRITE_TOUT\n");
+			return (1);
+		}
+	}
+	return (0);
+}
+
+/*-----------------------------------------------------------------------
+ * This is taken from the original flash.c for the LPC2292 SODIMM board
+ * and modified to suit.
+ */
+
+int ext_write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	ushort tmp;
+	ulong i;
+	uchar* src_org;
+	uchar* dst_org;
+	ulong cnt_org = cnt;
+	int ret = ERR_OK;
+
+	src_org = src;
+	dst_org = (uchar*)addr;
+
+	if (addr & 1) {		/* if odd address */
+		tmp = *((uchar*)(addr - 1)); /* little endian */
+		tmp |= (*src << 8);
+		if (write_word(info, addr - 1, tmp))
+			return ERR_PROG_ERROR;
+		addr += 1;
+		cnt -= 1;
+		src++;
+	}
+	while (cnt > 1) {
+		tmp = ((*(src+1)) << 8) + (*src); /* little endian */
+		if (write_word(info, addr, tmp))
+			return ERR_PROG_ERROR;
+		addr += 2;
+		src += 2;
+		cnt -= 2;
+	}
+	if (cnt > 0) {
+		tmp = (*((uchar*)(addr + 1))) << 8;
+		tmp |= *src;
+		if (write_word(info, addr, tmp))
+			return ERR_PROG_ERROR;
+	}
+
+	for (i = 0; i < cnt_org; i++) {
+		if (*dst_org != *src_org) {
+			printf("Write failed. Byte %lX differs\n", i);
+			ret = ERR_PROG_ERROR;
+			break;
+		}
+		dst_org++;
+		src_org++;
+	}
+
+	return ret;
+}