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1 /*
2  * (C) Copyright 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
3  * (C) Copyright 2012 Renesas Solutions Corp.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7 #include <common.h>
8 #include <asm/io.h>
9
10 #ifdef CONFIG_ARCH_CPU_INIT
11 int arch_cpu_init(void)
12 {
13         icache_enable();
14         return 0;
15 }
16 #endif
17
18 #ifndef CONFIG_SYS_DCACHE_OFF
19 void enable_caches(void)
20 {
21         dcache_enable();
22 }
23 #endif
24
25 #ifdef CONFIG_DISPLAY_CPUINFO
26 static u32 __rmobile_get_cpu_type(void)
27 {
28         return 0x0;
29 }
30 u32 rmobile_get_cpu_type(void)
31                 __attribute__((weak, alias("__rmobile_get_cpu_type")));
32
33 static u32 __rmobile_get_cpu_rev_integer(void)
34 {
35         return 0;
36 }
37 u32 rmobile_get_cpu_rev_integer(void)
38                 __attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
39
40 static u32 __rmobile_get_cpu_rev_fraction(void)
41 {
42         return 0;
43 }
44 u32 rmobile_get_cpu_rev_fraction(void)
45                 __attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
46
47 /* CPU infomation table */
48 static const struct {
49         u16 cpu_type;
50         u8 cpu_name[10];
51 } rmobile_cpuinfo[] = {
52         { 0x37, "SH73A0" },
53         { 0x40, "R8A7740" },
54         { 0x45, "R8A7790" },
55         { 0x47, "R8A7791" },
56         { 0x4A, "R8A7792" },
57         { 0x4B, "R8A7793" },
58         { 0x4C, "R8A7794" },
59         { 0x0, "CPU" },
60 };
61
62 int print_cpuinfo(void)
63 {
64         int i = 0;
65         u32 cpu_type = rmobile_get_cpu_type();
66         for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++) {
67                 if (rmobile_cpuinfo[i].cpu_type == cpu_type) {
68                         printf("CPU: Renesas Electronics %s rev %d.%d\n",
69                                rmobile_cpuinfo[i].cpu_name,
70                                rmobile_get_cpu_rev_integer(),
71                                rmobile_get_cpu_rev_fraction());
72                         break;
73                 }
74         }
75         return 0;
76 }
77 #endif /* CONFIG_DISPLAY_CPUINFO */