1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
4 * (C) Copyright 2012 Renesas Solutions Corp.
5 */
6 #include <common.h>
7 #include <asm/io.h>
8 #include <linux/ctype.h>
9
10 #ifdef CONFIG_ARCH_CPU_INIT
arch_cpu_init(void)11 int arch_cpu_init(void)
12 {
13 icache_enable();
14 return 0;
15 }
16 #endif
17
18 /* R-Car Gen3 D-cache is enabled in memmap-gen3.c */
19 #ifndef CONFIG_RCAR_GEN3
20 #ifndef CONFIG_SYS_DCACHE_OFF
enable_caches(void)21 void enable_caches(void)
22 {
23 dcache_enable();
24 }
25 #endif
26 #endif
27
28 #ifdef CONFIG_DISPLAY_CPUINFO
__rmobile_get_cpu_type(void)29 static u32 __rmobile_get_cpu_type(void)
30 {
31 return 0x0;
32 }
33 u32 rmobile_get_cpu_type(void)
34 __attribute__((weak, alias("__rmobile_get_cpu_type")));
35
__rmobile_get_cpu_rev_integer(void)36 static u32 __rmobile_get_cpu_rev_integer(void)
37 {
38 return 0;
39 }
40 u32 rmobile_get_cpu_rev_integer(void)
41 __attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
42
__rmobile_get_cpu_rev_fraction(void)43 static u32 __rmobile_get_cpu_rev_fraction(void)
44 {
45 return 0;
46 }
47 u32 rmobile_get_cpu_rev_fraction(void)
48 __attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
49
50 /* CPU infomation table */
51 static const struct {
52 u16 cpu_type;
53 u8 cpu_name[10];
54 } rmobile_cpuinfo[] = {
55 { RMOBILE_CPU_TYPE_SH73A0, "SH73A0" },
56 { RMOBILE_CPU_TYPE_R8A7740, "R8A7740" },
57 { RMOBILE_CPU_TYPE_R8A7790, "R8A7790" },
58 { RMOBILE_CPU_TYPE_R8A7791, "R8A7791" },
59 { RMOBILE_CPU_TYPE_R8A7792, "R8A7792" },
60 { RMOBILE_CPU_TYPE_R8A7793, "R8A7793" },
61 { RMOBILE_CPU_TYPE_R8A7794, "R8A7794" },
62 { RMOBILE_CPU_TYPE_R8A7795, "R8A7795" },
63 { RMOBILE_CPU_TYPE_R8A7796, "R8A7796" },
64 { RMOBILE_CPU_TYPE_R8A77965, "R8A77965" },
65 { RMOBILE_CPU_TYPE_R8A77970, "R8A77970" },
66 { RMOBILE_CPU_TYPE_R8A77990, "R8A77990" },
67 { RMOBILE_CPU_TYPE_R8A77995, "R8A77995" },
68 { 0x0, "CPU" },
69 };
70
rmobile_cpuinfo_idx(void)71 static int rmobile_cpuinfo_idx(void)
72 {
73 int i = 0;
74 u32 cpu_type = rmobile_get_cpu_type();
75
76 for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++)
77 if (rmobile_cpuinfo[i].cpu_type == cpu_type)
78 break;
79
80 return i;
81 }
82
83 #ifdef CONFIG_ARCH_MISC_INIT
arch_misc_init(void)84 int arch_misc_init(void)
85 {
86 int i, idx = rmobile_cpuinfo_idx();
87 char cpu[10] = { 0 };
88
89 for (i = 0; i < sizeof(cpu); i++)
90 cpu[i] = tolower(rmobile_cpuinfo[idx].cpu_name[i]);
91
92 env_set("platform", cpu);
93
94 return 0;
95 }
96 #endif
97
print_cpuinfo(void)98 int print_cpuinfo(void)
99 {
100 int i = rmobile_cpuinfo_idx();
101
102 printf("CPU: Renesas Electronics %s rev %d.%d\n",
103 rmobile_cpuinfo[i].cpu_name, rmobile_get_cpu_rev_integer(),
104 rmobile_get_cpu_rev_fraction());
105
106 return 0;
107 }
108 #endif /* CONFIG_DISPLAY_CPUINFO */
109