cm1_qp1 -> cm5200: single U-Boot image for modules from the cm5200 family.

Add the ability for modules from the Schindler cm5200 family to use a
single U-Boot image:
- rename cm1_qp1 to cm5200
- add run-time module detection
- parametrize SDRAM configuration according to the module we are running on

Few minor, board-specific fixes included in this patch:
- better MAC address handling
- updated default environment ('update' command uses +{filesize} now)
- improved error messages in the auto-update code
- allow booting U-Boot from RAM (CFG_RAMBOOT)

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Signed-off-by: Piotr Kruszynski <ppk@semihalf.com>
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>

1 files changed, 200 insertions, 0 deletions

diff --git a/board/cm5200/fwupdate.c b/board/cm5200/fwupdate.c
new file mode 100644
index 0000000..19aa94a
--- /dev/null
+++ b/board/cm5200/fwupdate.c
@@ -0,0 +1,200 @@
+/*
+ * (C) Copyright 2007 Schindler Lift Inc.
+ * (C) Copyright 2007 DENX Software Engineering
+ *
+ * Author: Michel Marti <mma@objectxp.com>
+ * Adapted for U-Boot 1.2 by Piotr Kruszynski <ppk@semihalf.com>:
+ *   - code clean-up
+ *   - bugfix for overwriting bootargs by user
+ *
+ * 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>
+#include <command.h>
+#include <malloc.h>
+#include <image.h>
+#include <usb.h>
+#include <fat.h>
+
+#include "fwupdate.h"
+
+extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
+extern long do_fat_read(const char *, void *, unsigned long, int);
+extern int do_fat_fsload(cmd_tbl_t *, int, int, char *[]);
+
+static int load_rescue_image(ulong);
+
+void cm5200_fwupdate(void)
+{
+	cmd_tbl_t *bcmd;
+	char *rsargs;
+	char *tmp = NULL;
+	char ka[16];
+	char *argv[3] = { "bootm", ka, NULL };
+
+	/* Check if rescue system is disabled... */
+	if (getenv("norescue")) {
+		printf(LOG_PREFIX "Rescue System disabled.\n");
+		return;
+	}
+
+	/* Check if we have a USB storage device and load image */
+	if (load_rescue_image(LOAD_ADDR))
+		return;
+
+	bcmd = find_cmd("bootm");
+	if (!bcmd)
+		return;
+
+	sprintf(ka, "%lx", LOAD_ADDR);
+
+	/* prepare our bootargs */
+	rsargs = getenv("rs-args");
+	if (!rsargs)
+		rsargs = RS_BOOTARGS;
+	else {
+		tmp = malloc(strlen(rsargs+1));
+		if (!tmp) {
+			printf(LOG_PREFIX "Memory allocation failed\n");
+			return;
+		}
+		strcpy(tmp, rsargs);
+		rsargs = tmp;
+	}
+
+	setenv("bootargs", rsargs);
+
+	if (rsargs == tmp)
+		free(rsargs);
+
+	printf(LOG_PREFIX "Starting update system (bootargs=%s)...\n", rsargs);
+	do_bootm(bcmd, 0, 2, argv);
+}
+
+static int load_rescue_image(ulong addr)
+{
+	disk_partition_t info;
+	int devno;
+	int partno;
+	int i;
+	char fwdir[64];
+	char nxri[128];
+	char *tmp;
+	char dev[7];
+	char addr_str[16];
+	char *argv[6] = { "fatload", "usb", dev, addr_str, nxri, NULL };
+	block_dev_desc_t *stor_dev = NULL;
+	cmd_tbl_t *bcmd;
+
+	/* Get name of firmware directory */
+	tmp = getenv("fw-dir");
+
+	/* Copy it into fwdir */
+	strncpy(fwdir, tmp ? tmp : FW_DIR, sizeof(fwdir));
+	fwdir[sizeof(fwdir) - 1] = 0; /* Terminate string */
+
+	printf(LOG_PREFIX "Checking for firmware image directory '%s' on USB"
+		" storage...\n", fwdir);
+	usb_stop();
+	if (usb_init() != 0)
+		return 1;
+
+	/* Check for storage device */
+	if (usb_stor_scan(1) != 0) {
+		usb_stop();
+		return 1;
+	}
+
+	/* Detect storage device */
+	for (devno = 0; devno < USB_MAX_STOR_DEV; devno++) {
+		stor_dev = usb_stor_get_dev(devno);
+		if (stor_dev->type != DEV_TYPE_UNKNOWN)
+			break;
+	}
+	if (!stor_dev || stor_dev->type == DEV_TYPE_UNKNOWN) {
+		printf(LOG_PREFIX "No valid storage device found...\n");
+		usb_stop();
+		return 1;
+	}
+
+	/* Detect partition */
+	for (partno = -1, i = 0; i < 6; i++) {
+		if (get_partition_info(stor_dev, i, &info) == 0) {
+			if (fat_register_device(stor_dev, i) == 0) {
+				/* Check if rescue image is present */
+				FW_DEBUG("Looking for firmware directory '%s'"
+					" on partition %d\n", fwdir, i);
+				if (do_fat_read(fwdir, NULL, 0, LS_NO) == -1) {
+					FW_DEBUG("No NX rescue image on "
+						"partition %d.\n", i);
+					partno = -2;
+				} else {
+					partno = i;
+					FW_DEBUG("Partition %d contains "
+						"firmware directory\n", partno);
+					break;
+				}
+			}
+		}
+	}
+
+	if (partno < 0) {
+		switch (partno) {
+		case -1:
+			printf(LOG_PREFIX "Error: No valid (FAT) partition "
+				"detected\n");
+			break;
+		case -2:
+			printf(LOG_PREFIX "Error: No NX rescue image on FAT "
+				"partition\n");
+			break;
+		default:
+			printf(LOG_PREFIX "Error: Failed with code %d\n",
+				partno);
+		}
+		usb_stop();
+		return 1;
+	}
+
+	/* Load the rescue image */
+	bcmd = find_cmd("fatload");
+	if (!bcmd) {
+		printf(LOG_PREFIX "Error - 'fatload' command not present.\n");
+		usb_stop();
+		return 1;
+	}
+
+	tmp = getenv("nx-rescue-image");
+	sprintf(nxri, "%s/%s", fwdir, tmp ? tmp : RESCUE_IMAGE);
+	sprintf(dev, "%d:%d", devno, partno);
+	sprintf(addr_str, "%lx", addr);
+
+	FW_DEBUG("fat_fsload device='%s', addr='%s', file: %s\n",
+		dev, addr_str, nxri);
+
+	if (do_fat_fsload(bcmd, 0, 5, argv) != 0) {
+		usb_stop();
+		return 1;
+	}
+
+	/* Stop USB */
+	usb_stop();
+	return 0;
+}