1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (c) 2012, 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 <asm/arch/tegra.h>
29 #include <asm/arch-tegra/pmc.h>
30 
31 static int do_enterrcm(cmd_tbl_t *cmdtp, int flag, int argc,
32 		       char * const argv[])
33 {
34 	struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
35 
36 	puts("Entering RCM...\n");
37 	udelay(50000);
38 
39 	pmc->pmc_scratch0 = 2;
40 	disable_interrupts();
41 	reset_cpu(0);
42 
43 	return 0;
44 }
45 
46 U_BOOT_CMD(
47 	enterrcm, 1, 0, do_enterrcm,
48 	"reset Tegra and enter USB Recovery Mode",
49 	""
50 );
51