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/*
* (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
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <image.h>
#include <usb.h>
#include <fat.h>
#include "fwupdate.h"
extern long do_fat_read(const char *, void *, unsigned long, int);
extern int do_fat_fsload(cmd_tbl_t *, int, int, char * const []);
static int load_rescue_image(ulong);
void cm5200_fwupdate(void)
{
cmd_tbl_t *bcmd;
char *rsargs;
char *tmp = NULL;
char ka[16];
char * const 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", (ulong)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 * const 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;
}
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