Add support for the Siemens SMN42 board.

1 files changed, 249 insertions, 0 deletions

diff --git a/cpu/arm720t/lpc2292/flash.c b/cpu/arm720t/lpc2292/flash.c
new file mode 100644
index 0000000..e5c8697
--- /dev/null
+++ b/cpu/arm720t/lpc2292/flash.c
@@ -0,0 +1,249 @@
+/*
+ * (C) Copyright 2006 Embedded Artists AB <www.embeddedartists.com>
+ *
+ * Modified to remove all but the IAP-command related code by
+ * Gary Jennejohn <garyj@denx.de>
+ *
+ * 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/arch/hardware.h>
+
+/* IAP commands use 32 bytes at the top of CPU internal sram, we
+   use 512 bytes below that */
+#define COPY_BUFFER_LOCATION 0x40003de0
+
+#define IAP_LOCATION 0x7ffffff1
+#define IAP_CMD_PREPARE 50
+#define IAP_CMD_COPY 51
+#define IAP_CMD_ERASE 52
+#define IAP_CMD_CHECK 53
+#define IAP_CMD_ID 54
+#define IAP_CMD_VERSION 55
+#define IAP_CMD_COMPARE 56
+
+#define IAP_RET_CMD_SUCCESS 0
+
+static unsigned long command[5];
+static unsigned long result[2];
+
+extern void iap_entry(unsigned long * command, unsigned long * result);
+
+/*-----------------------------------------------------------------------
+ *
+ */
+static int get_flash_sector(flash_info_t * info, ulong flash_addr)
+{
+	int i;
+
+	for(i = 1; i < (info->sector_count); i++) {
+		if (flash_addr < (info->start[i]))
+			break;
+	}
+
+	return (i-1);
+}
+
+/*-----------------------------------------------------------------------
+ * This function assumes that flash_addr is aligned on 512 bytes boundary
+ * in flash. This function also assumes that prepare have been called
+ * for the sector in question.
+ */
+int lpc2292_copy_buffer_to_flash(flash_info_t * info, ulong flash_addr)
+{
+	int first_sector;
+	int last_sector;
+
+	first_sector = get_flash_sector(info, flash_addr);
+	last_sector = get_flash_sector(info, flash_addr + 512 - 1);
+
+	/* prepare sectors for write */
+	command[0] = IAP_CMD_PREPARE;
+	command[1] = first_sector;
+	command[2] = last_sector;
+	iap_entry(command, result);
+	if (result[0] != IAP_RET_CMD_SUCCESS) {
+		printf("IAP prepare failed\n");
+		return ERR_PROG_ERROR;
+	}
+
+	command[0] = IAP_CMD_COPY;
+	command[1] = flash_addr;
+	command[2] = COPY_BUFFER_LOCATION;
+	command[3] = 512;
+	command[4] = CFG_SYS_CLK_FREQ >> 10;
+	iap_entry(command, result);
+	if (result[0] != IAP_RET_CMD_SUCCESS) {
+		printf("IAP copy failed\n");
+		return 1;
+	}
+
+	return 0;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int lpc2292_flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+	int flag;
+	int prot;
+	int sect;
+
+	prot = 0;
+	for (sect = s_first; sect <= s_last; ++sect) {
+		if (info->protect[sect]) {
+			prot++;
+		}
+	}
+	if (prot)
+		return ERR_PROTECTED;
+
+
+	flag = disable_interrupts();
+
+	printf ("Erasing %d sectors starting at sector %2d.\n"
+	"This make take some time ... ",
+	s_last - s_first + 1, s_first);
+
+	command[0] = IAP_CMD_PREPARE;
+	command[1] = s_first;
+	command[2] = s_last;
+	iap_entry(command, result);
+	if (result[0] != IAP_RET_CMD_SUCCESS) {
+		printf("IAP prepare failed\n");
+		return ERR_PROTECTED;
+	}
+
+	command[0] = IAP_CMD_ERASE;
+	command[1] = s_first;
+	command[2] = s_last;
+	command[3] = CFG_SYS_CLK_FREQ >> 10;
+	iap_entry(command, result);
+	if (result[0] != IAP_RET_CMD_SUCCESS) {
+		printf("IAP erase failed\n");
+		return ERR_PROTECTED;
+	}
+
+	if (flag)
+		enable_interrupts();
+
+	return ERR_OK;
+}
+
+int lpc2292_write_buff (flash_info_t * info, uchar * src, ulong addr,
+			ulong cnt)
+{
+	int first_copy_size;
+	int last_copy_size;
+	int first_block;
+	int last_block;
+	int nbr_mid_blocks;
+	uchar memmap_value;
+	ulong i;
+	uchar* src_org;
+	uchar* dst_org;
+	int ret = ERR_OK;
+
+	src_org = src;
+	dst_org = (uchar*)addr;
+
+	first_block = addr / 512;
+	last_block = (addr + cnt) / 512;
+	nbr_mid_blocks = last_block - first_block - 1;
+
+	first_copy_size = 512 - (addr % 512);
+	last_copy_size = (addr + cnt) % 512;
+
+	debug("\ncopy first block: (1) %lX -> %lX 0x200 bytes, "
+		"(2) %lX -> %lX 0x%X bytes, (3) %lX -> %lX 0x200 bytes\n",
+	(ulong)(first_block * 512),
+	(ulong)COPY_BUFFER_LOCATION,
+	(ulong)src,
+	(ulong)(COPY_BUFFER_LOCATION + 512 - first_copy_size),
+	first_copy_size,
+	(ulong)COPY_BUFFER_LOCATION,
+	(ulong)(first_block * 512));
+
+	/* copy first block */
+	memcpy((void*)COPY_BUFFER_LOCATION,
+		(void*)(first_block * 512), 512);
+	memcpy((void*)(COPY_BUFFER_LOCATION + 512 - first_copy_size),
+		src, first_copy_size);
+	lpc2292_copy_buffer_to_flash(info, first_block * 512);
+	src += first_copy_size;
+	addr += first_copy_size;
+
+	/* copy middle blocks */
+	for (i = 0; i < nbr_mid_blocks; i++) {
+		debug("copy middle block: %lX -> %lX 512 bytes, "
+		"%lX -> %lX 512 bytes\n",
+		(ulong)src,
+		(ulong)COPY_BUFFER_LOCATION,
+		(ulong)COPY_BUFFER_LOCATION,
+		(ulong)addr);
+
+		memcpy((void*)COPY_BUFFER_LOCATION, src, 512);
+		lpc2292_copy_buffer_to_flash(info, addr);
+		src += 512;
+		addr += 512;
+	}
+
+
+	if (last_copy_size > 0) {
+		debug("copy last block: (1) %lX -> %lX 0x200 bytes, "
+		"(2) %lX -> %lX 0x%X bytes, (3) %lX -> %lX x200 bytes\n",
+		(ulong)(last_block * 512),
+		(ulong)COPY_BUFFER_LOCATION,
+		(ulong)src,
+		(ulong)(COPY_BUFFER_LOCATION),
+		last_copy_size,
+		(ulong)COPY_BUFFER_LOCATION,
+		(ulong)addr);
+
+		/* copy last block */
+		memcpy((void*)COPY_BUFFER_LOCATION,
+			(void*)(last_block * 512), 512);
+		memcpy((void*)COPY_BUFFER_LOCATION,
+			src, last_copy_size);
+		lpc2292_copy_buffer_to_flash(info, addr);
+	}
+
+	/* verify write */
+	memmap_value = GET8(MEMMAP);
+
+	disable_interrupts();
+
+	PUT8(MEMMAP, 01);		/* we must make sure that initial 64
+							   bytes are taken from flash when we
+							   do the compare */
+
+	for (i = 0; i < cnt; i++) {
+		if (*dst_org != *src_org){
+			printf("Write failed. Byte %lX differs\n", i);
+			ret = ERR_PROG_ERROR;
+			break;
+		}
+		dst_org++;
+		src_org++;
+	}
+
+	PUT8(MEMMAP, memmap_value);
+	enable_interrupts();
+
+	return ret;
+}