1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * board/renesas/condor/condor.c
4  *     This file is Condor board support.
5  *
6  * Copyright (C) 2019 Marek Vasut <marek.vasut+renesas@gmail.com>
7  */
8 
9 #include <common.h>
10 #include <cpu_func.h>
11 #include <hang.h>
12 #include <init.h>
13 #include <asm/global_data.h>
14 #include <asm/processor.h>
15 #include <asm/mach-types.h>
16 #include <asm/io.h>
17 #include <linux/errno.h>
18 #include <asm/arch/sys_proto.h>
19 
20 DECLARE_GLOBAL_DATA_PTR;
21 
board_init(void)22 int board_init(void)
23 {
24 	/* adress of boot parameters */
25 	gd->bd->bi_boot_params = CONFIG_SYS_TEXT_BASE + 0x50000;
26 
27 	return 0;
28 }
29 
30 #define RST_BASE	0xE6160000
31 #define RST_CA57RESCNT	(RST_BASE + 0x40)
32 #define RST_CA53RESCNT	(RST_BASE + 0x44)
33 #define RST_RSTOUTCR	(RST_BASE + 0x58)
34 #define RST_CA57_CODE	0xA5A5000F
35 #define RST_CA53_CODE	0x5A5A000F
36 
reset_cpu(ulong addr)37 void reset_cpu(ulong addr)
38 {
39 	unsigned long midr, cputype;
40 
41 	asm volatile("mrs %0, midr_el1" : "=r" (midr));
42 	cputype = (midr >> 4) & 0xfff;
43 
44 	if (cputype == 0xd03)
45 		writel(RST_CA53_CODE, RST_CA53RESCNT);
46 	else if (cputype == 0xd07)
47 		writel(RST_CA57_CODE, RST_CA57RESCNT);
48 	else
49 		hang();
50 }
51