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/*
* dfu.c - device firmware update command
*
* Copyright (c) 2009 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* 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 version 2
* as published by the Free Software Foundation.
*
* 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.
*
*/
#include <common.h>
#include <command.h>
#include <errno.h>
#include <malloc.h>
#include <getopt.h>
#include <fs.h>
#include <xfuncs.h>
#include <usb/dfu.h>
#define PARSE_DEVICE 0
#define PARSE_NAME 1
#define PARSE_FLAGS 2
static int dfu_do_parse_one(char *partstr, char **endstr, struct usb_dfu_dev *dfu)
{
int i = 0, state = PARSE_DEVICE;
char device[PATH_MAX];
char name[PATH_MAX];
memset(device, 0, sizeof(device));
memset(name, 0, sizeof(name));
dfu->flags = 0;
while (*partstr && *partstr != ',') {
switch (state) {
case PARSE_DEVICE:
if (*partstr == '(') {
state = PARSE_NAME;
i = 0;
} else {
device[i++] = *partstr;
}
break;
case PARSE_NAME:
if (*partstr == ')') {
state = PARSE_FLAGS;
i = 0;
} else {
name[i++] = *partstr;
}
break;
case PARSE_FLAGS:
switch (*partstr) {
case 's':
dfu->flags |= DFU_FLAG_SAFE;
break;
case 'r':
dfu->flags |= DFU_FLAG_READBACK;
break;
case 'c':
dfu->flags |= DFU_FLAG_CREATE;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
partstr++;
}
if (state != PARSE_FLAGS)
return -EINVAL;
dfu->name = xstrdup(name);
dfu->dev = xstrdup(device);
if (*partstr == ',')
partstr++;
*endstr = partstr;
return 0;
}
/* dfu /dev/self0(bootloader)sr,/dev/nand0.root.bb(root)
*
* s = save mode (download whole image before flashing)
* r = read back (firmware image can be downloaded back from host)
*/
static int do_dfu(int argc, char *argv[])
{
int n = 0;
struct usb_dfu_pdata pdata;
char *endptr, *argstr;
struct usb_dfu_dev *dfu_alts = NULL;
int ret;
if (argc != optind + 1)
return COMMAND_ERROR_USAGE;
argstr = argv[optind];
for (n = 0; *argstr; n++) {
dfu_alts = xrealloc(dfu_alts, sizeof(*dfu_alts) * (n + 1));
if (dfu_do_parse_one(argstr, &endptr, &dfu_alts[n])) {
printf("parse error\n");
ret = -EINVAL;
goto out;
}
argstr = endptr;
}
pdata.alts = dfu_alts;
pdata.num_alts = n;
ret = usb_dfu_register(&pdata);
out:
while (n) {
n--;
free(dfu_alts[n].name);
free(dfu_alts[n].dev);
};
free(dfu_alts);
return ret;
}
BAREBOX_CMD_HELP_START(dfu)
BAREBOX_CMD_HELP_TEXT("Turn's the USB host into DFU mode (Device Firmware Mode) and accepts")
BAREBOX_CMD_HELP_TEXT("a new firmware. The destination is described by DESC in the this format:")
BAREBOX_CMD_HELP_TEXT(" DEVICE(NAME)[src]...")
BAREBOX_CMD_HELP_TEXT("Specify the '(') and ')' literal, the [] however denote this optional modes:")
BAREBOX_CMD_HELP_TEXT("- 's' safe mode (download the complete image before flashing)")
BAREBOX_CMD_HELP_TEXT("- 'r' readback of the firmware is allowed")
BAREBOX_CMD_HELP_TEXT("- 'c' the file will be created (for use with regular files)")
BAREBOX_CMD_HELP_TEXT("")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(dfu)
.cmd = do_dfu,
BAREBOX_CMD_DESC("device firmware update")
BAREBOX_CMD_OPTS("DESC")
BAREBOX_CMD_GROUP(CMD_GRP_MISC)
BAREBOX_CMD_HELP(cmd_dfu_help)
BAREBOX_CMD_END
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