fastboot.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2008 - 2009 Windriver, <www.windriver.com>
* Author: Tom Rix <Tom.Rix@windriver.com>
*
* (C) Copyright 2014 Linaro, Ltd.
* Rob Herring <robh@kernel.org>
*/
#include <common.h>
#include <command.h>
#include <console.h>
#include <g_dnl.h>
#include <fastboot.h>
#include <net.h>
#include <usb.h>
#include <watchdog.h>
static int do_fastboot_udp(int argc, char *const argv[],
uintptr_t buf_addr, size_t buf_size)
{
#if CONFIG_IS_ENABLED(UDP_FUNCTION_FASTBOOT)
int err = net_loop(FASTBOOT);
if (err < 0) {
printf("fastboot udp error: %d\n", err);
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
#else
pr_err("Fastboot UDP not enabled\n");
return CMD_RET_FAILURE;
#endif
}
static int do_fastboot_usb(int argc, char *const argv[],
uintptr_t buf_addr, size_t buf_size)
{
#if CONFIG_IS_ENABLED(USB_FUNCTION_FASTBOOT)
int controller_index;
char *usb_controller;
char *endp;
int ret;
if (argc < 2)
return CMD_RET_USAGE;
usb_controller = argv[1];
controller_index = simple_strtoul(usb_controller, &endp, 0);
if (*endp != '\0') {
pr_err("Error: Wrong USB controller index format\n");
return CMD_RET_FAILURE;
}
ret = usb_gadget_initialize(controller_index);
if (ret) {
pr_err("USB init failed: %d\n", ret);
return CMD_RET_FAILURE;
}
g_dnl_clear_detach();
ret = g_dnl_register("usb_dnl_fastboot");
if (ret)
return ret;
if (!g_dnl_board_usb_cable_connected()) {
puts("\rUSB cable not detected.\n" \
"Command exit.\n");
ret = CMD_RET_FAILURE;
goto exit;
}
while (1) {
if (g_dnl_detach())
break;
if (ctrlc())
break;
WATCHDOG_RESET();
usb_gadget_handle_interrupts(controller_index);
}
ret = CMD_RET_SUCCESS;
exit:
g_dnl_unregister();
g_dnl_clear_detach();
usb_gadget_release(controller_index);
return ret;
#else
pr_err("Fastboot USB not enabled\n");
return CMD_RET_FAILURE;
#endif
}
static int do_fastboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
uintptr_t buf_addr = (uintptr_t)NULL;
size_t buf_size = 0;
if (argc < 2)
return CMD_RET_USAGE;
while (argc > 1 && **(argv + 1) == '-') {
char *arg = *++argv;
--argc;
while (*++arg) {
switch (*arg) {
case 'l':
if (--argc <= 0)
return CMD_RET_USAGE;
buf_addr = simple_strtoul(*++argv, NULL, 16);
goto NXTARG;
case 's':
if (--argc <= 0)
return CMD_RET_USAGE;
buf_size = simple_strtoul(*++argv, NULL, 16);
goto NXTARG;
default:
return CMD_RET_USAGE;
}
}
NXTARG:
;
}
/* Handle case when USB controller param is just '-' */
if (argc == 1) {
pr_err("Error: Incorrect USB controller index\n");
return CMD_RET_USAGE;
}
fastboot_init((void *)buf_addr, buf_size);
if (!strcmp(argv[1], "udp"))
return do_fastboot_udp(argc, argv, buf_addr, buf_size);
if (!strcmp(argv[1], "usb")) {
argv++;
argc--;
}
return do_fastboot_usb(argc, argv, buf_addr, buf_size);
}
#ifdef CONFIG_SYS_LONGHELP
static char fastboot_help_text[] =
"[-l addr] [-s size] usb <controller> | udp\n"
"\taddr - address of buffer used during data transfers ("
__stringify(CONFIG_FASTBOOT_BUF_ADDR) ")\n"
"\tsize - size of buffer used during data transfers ("
__stringify(CONFIG_FASTBOOT_BUF_SIZE) ")"
;
#endif
U_BOOT_CMD(
fastboot, CONFIG_SYS_MAXARGS, 1, do_fastboot,
"run as a fastboot usb or udp device", fastboot_help_text
);