1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2012-2019, NVIDIA CORPORATION. All rights reserved.
4 *
5 * Derived from code (arch/arm/lib/reset.c) that is:
6 *
7 * (C) Copyright 2002
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * Marius Groeger <mgroeger@sysgo.de>
10 *
11 * (C) Copyright 2002
12 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
13 * Alex Zuepke <azu@sysgo.de>
14 *
15 * (C) Copyright 2002
16 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
17 *
18 * (C) Copyright 2004
19 * DAVE Srl
20 * http://www.dave-tech.it
21 * http://www.wawnet.biz
22 * mailto:info@wawnet.biz
23 *
24 * (C) Copyright 2004 Texas Insturments
25 */
26
27 #include <common.h>
28 #include <command.h>
29 #include <cpu_func.h>
30 #include <irq_func.h>
31 #include <asm/arch/tegra.h>
32 #include <asm/arch-tegra/pmc.h>
33 #include <linux/delay.h>
34
do_enterrcm(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])35 static int do_enterrcm(struct cmd_tbl *cmdtp, int flag, int argc,
36 char *const argv[])
37 {
38 puts("Entering RCM...\n");
39 udelay(50000);
40
41 tegra_pmc_writel(2, PMC_SCRATCH0);
42 disable_interrupts();
43 reset_cpu(0);
44
45 return 0;
46 }
47
48 U_BOOT_CMD(
49 enterrcm, 1, 0, do_enterrcm,
50 "reset Tegra and enter USB Recovery Mode",
51 ""
52 );
53