190 lines
4.3 KiB
C
190 lines
4.3 KiB
C
/*
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* dfu.c - device firmware update command
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*
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* Copyright (c) 2009 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <malloc.h>
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#include <getopt.h>
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#include <fs.h>
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#include <xfuncs.h>
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#include <usb/dfu.h>
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#define PARSE_DEVICE 0
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#define PARSE_NAME 1
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#define PARSE_FLAGS 2
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static int dfu_do_parse_one(char *partstr, char **endstr, struct usb_dfu_dev *dfu)
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{
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int i = 0, state = PARSE_DEVICE;
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char device[PATH_MAX];
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char name[PATH_MAX];
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memset(device, 0, sizeof(device));
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memset(name, 0, sizeof(name));
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dfu->flags = 0;
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while (*partstr && *partstr != ',') {
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switch (state) {
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case PARSE_DEVICE:
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if (*partstr == '(') {
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state = PARSE_NAME;
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i = 0;
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} else {
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device[i++] = *partstr;
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}
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break;
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case PARSE_NAME:
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if (*partstr == ')') {
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state = PARSE_FLAGS;
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i = 0;
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} else {
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name[i++] = *partstr;
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}
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break;
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case PARSE_FLAGS:
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switch (*partstr) {
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case 's':
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dfu->flags |= DFU_FLAG_SAVE;
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break;
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case 'r':
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dfu->flags |= DFU_FLAG_READBACK;
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break;
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default:
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return -EINVAL;
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}
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break;
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default:
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return -EINVAL;
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}
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partstr++;
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}
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if (state != PARSE_FLAGS)
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return -EINVAL;
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dfu->name = xstrdup(name);
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dfu->dev = xstrdup(device);
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if (*partstr == ',')
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partstr++;
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*endstr = partstr;
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return 0;
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}
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/* dfu /dev/self0(bootloader)sr,/dev/nand0.root.bb(root)
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*
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* s = save mode (download whole image before flashing)
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* r = read back (firmware image can be downloaded back from host)
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*/
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static int do_dfu(int argc, char *argv[])
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{
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int opt, n = 0;
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struct usb_dfu_pdata pdata;
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char *endptr, *argstr;
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struct usb_dfu_dev *dfu_alts = NULL;
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char *manufacturer = "barebox";
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char *productname = CONFIG_BOARDINFO;
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u16 idVendor = 0, idProduct = 0;
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while((opt = getopt(argc, argv, "m:p:V:P:")) > 0) {
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switch(opt) {
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case 'm':
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manufacturer = optarg;
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break;
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case 'p':
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productname = optarg;
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break;
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case 'V':
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idVendor = simple_strtoul(optarg, NULL, 0);
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break;
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case 'P':
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idProduct = simple_strtoul(optarg, NULL, 0);
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break;
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}
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}
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if (argc != optind + 1)
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return COMMAND_ERROR_USAGE;
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argstr = argv[optind];
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if (!idProduct || !idVendor) {
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printf("productid or vendorid not given\n");
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return 1;
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}
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for (n = 0; *argstr; n++) {
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dfu_alts = xrealloc(dfu_alts, sizeof(*dfu_alts) * (n + 1));
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if (dfu_do_parse_one(argstr, &endptr, &dfu_alts[n])) {
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printf("parse error\n");
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goto out;
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}
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argstr = endptr;
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}
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pdata.alts = dfu_alts;
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pdata.num_alts = n;
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pdata.manufacturer = manufacturer;
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pdata.productname = productname;
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pdata.idVendor = idVendor;
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pdata.idProduct = idProduct;
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usb_dfu_register(&pdata);
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out:
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while (n) {
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n--;
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free(dfu_alts[n].name);
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free(dfu_alts[n].dev);
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};
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free(dfu_alts);
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return 1;
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}
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BAREBOX_CMD_HELP_START(dfu)
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BAREBOX_CMD_HELP_USAGE("dfu [OPTIONS] <description>\n")
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BAREBOX_CMD_HELP_SHORT("Start firmware update with the Device Firmware Update (DFU) protocol.\n")
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BAREBOX_CMD_HELP_OPT ("-m <str>", "Manufacturer string (barebox)\n")
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BAREBOX_CMD_HELP_OPT ("-p <str>", "product string (" CONFIG_BOARDINFO ")\n")
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BAREBOX_CMD_HELP_OPT ("-V <id>", "vendor id\n")
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BAREBOX_CMD_HELP_OPT ("-P <id>", "product id\n")
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BAREBOX_CMD_HELP_OPT ("<description>",
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"device1(name1)[sr],device2(name2)[sr]\n"
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"'s' means 'safe mode' (download the complete image before flashing) and\n"
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"'r' that readback of the firmware is allowed.\n")
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BAREBOX_CMD_HELP_END
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/**
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* @page dfu_command
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\<description> has the following form:
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device1(name1)[sr],device2(name2)[sr]
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's' means 'safe mode' (download the complete image before flashing) and
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'r' that readback of the firmware is allowed.
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\todo Add example, how to use dfu from a Linux or Windows host.
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*/
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BAREBOX_CMD_START(dfu)
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.cmd = do_dfu,
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.usage = "Device firmware update",
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BAREBOX_CMD_HELP(cmd_dfu_help)
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BAREBOX_CMD_END
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