xref: /openbmc/u-boot/board/renesas/ebisu/ebisu.c (revision cf033e04) 
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * board/renesas/ebisu/ebisu.c
4  *     This file is Ebisu board support.
5  *
6  * Copyright (C) 2018 Marek Vasut <marek.vasut+renesas@gmail.com>
7  */
8 
9 #include <common.h>
10 #include <malloc.h>
11 #include <netdev.h>
12 #include <dm.h>
13 #include <dm/platform_data/serial_sh.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 #include <asm/gpio.h>
20 #include <asm/arch/gpio.h>
21 #include <asm/arch/rmobile.h>
22 #include <asm/arch/rcar-mstp.h>
23 #include <asm/arch/sh_sdhi.h>
24 #include <i2c.h>
25 #include <mmc.h>
26 
27 DECLARE_GLOBAL_DATA_PTR;
28 
s_init(void)29 void s_init(void)
30 {
31 }
32 
board_early_init_f(void)33 int board_early_init_f(void)
34 {
35 	return 0;
36 }
37 
board_init(void)38 int board_init(void)
39 {
40 	/* adress of boot parameters */
41 	gd->bd->bi_boot_params = CONFIG_SYS_TEXT_BASE + 0x50000;
42 
43 	return 0;
44 }
45 
dram_init(void)46 int dram_init(void)
47 {
48 	if (fdtdec_setup_mem_size_base() != 0)
49 		return -EINVAL;
50 
51 	return 0;
52 }
53 
dram_init_banksize(void)54 int dram_init_banksize(void)
55 {
56 	fdtdec_setup_memory_banksize();
57 
58 	return 0;
59 }
60 
61 #define RST_BASE	0xE6160000
62 #define RST_CA57RESCNT	(RST_BASE + 0x40)
63 #define RST_CA53RESCNT	(RST_BASE + 0x44)
64 #define RST_RSTOUTCR	(RST_BASE + 0x58)
65 #define RST_CA57_CODE	0xA5A5000F
66 #define RST_CA53_CODE	0x5A5A000F
67 
reset_cpu(ulong addr)68 void reset_cpu(ulong addr)
69 {
70 	unsigned long midr, cputype;
71 
72 	asm volatile("mrs %0, midr_el1" : "=r" (midr));
73 	cputype = (midr >> 4) & 0xfff;
74 
75 	if (cputype == 0xd03)
76 		writel(RST_CA53_CODE, RST_CA53RESCNT);
77 	else if (cputype == 0xd07)
78 		writel(RST_CA57_CODE, RST_CA57RESCNT);
79 	else
80 		hang();
81 }
82