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