1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2018 Xilinx, Inc. - Michal Simek
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <errno.h>
9 #include <sysreset.h>
10 #include <linux/err.h>
11 #include <linux/stringify.h>
12 
microblaze_sysreset_request(struct udevice * dev,enum sysreset_t type)13 static int microblaze_sysreset_request(struct udevice *dev,
14 				       enum sysreset_t type)
15 {
16 	puts("Microblaze soft reset sysreset\n");
17 	__asm__ __volatile__ (
18 	    "mts rmsr, r0;" \
19 	    "brai " __stringify(CONFIG_XILINX_MICROBLAZE0_VECTOR_BASE_ADDR));
20 
21 	return -EINPROGRESS;
22 }
23 
24 static struct sysreset_ops microblaze_sysreset = {
25 	.request = microblaze_sysreset_request,
26 };
27 
28 U_BOOT_DRIVER(sysreset_microblaze) = {
29 	.id	= UCLASS_SYSRESET,
30 	.name	= "mb_soft_reset",
31 	.ops	= &microblaze_sysreset,
32 };
33