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 <cpu_func.h>
8 #include <asm/io.h>
9 #include <env.h>
10 #include <linux/ctype.h>
11
12 #ifdef CONFIG_ARCH_CPU_INIT
arch_cpu_init(void)13 int arch_cpu_init(void)
14 {
15 icache_enable();
16 return 0;
17 }
18 #endif
19
20 /* R-Car Gen3 D-cache is enabled in memmap-gen3.c */
21 #ifndef CONFIG_RCAR_GEN3
22 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
enable_caches(void)23 void enable_caches(void)
24 {
25 dcache_enable();
26 }
27 #endif
28 #endif
29
30 #ifdef CONFIG_DISPLAY_CPUINFO
31 #ifndef CONFIG_RZA1
__rmobile_get_cpu_type(void)32 static u32 __rmobile_get_cpu_type(void)
33 {
34 return 0x0;
35 }
36 u32 rmobile_get_cpu_type(void)
37 __attribute__((weak, alias("__rmobile_get_cpu_type")));
38
__rmobile_get_cpu_rev_integer(void)39 static u32 __rmobile_get_cpu_rev_integer(void)
40 {
41 return 0;
42 }
43 u32 rmobile_get_cpu_rev_integer(void)
44 __attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
45
__rmobile_get_cpu_rev_fraction(void)46 static u32 __rmobile_get_cpu_rev_fraction(void)
47 {
48 return 0;
49 }
50 u32 rmobile_get_cpu_rev_fraction(void)
51 __attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
52
53 /* CPU infomation table */
54 static const struct {
55 u16 cpu_type;
56 u8 cpu_name[10];
57 } rmobile_cpuinfo[] = {
58 { RMOBILE_CPU_TYPE_SH73A0, "SH73A0" },
59 { RMOBILE_CPU_TYPE_R8A7740, "R8A7740" },
60 { RMOBILE_CPU_TYPE_R8A7790, "R8A7790" },
61 { RMOBILE_CPU_TYPE_R8A7791, "R8A7791" },
62 { RMOBILE_CPU_TYPE_R8A7792, "R8A7792" },
63 { RMOBILE_CPU_TYPE_R8A7793, "R8A7793" },
64 { RMOBILE_CPU_TYPE_R8A7794, "R8A7794" },
65 { RMOBILE_CPU_TYPE_R8A7795, "R8A7795" },
66 { RMOBILE_CPU_TYPE_R8A7796, "R8A7796" },
67 { RMOBILE_CPU_TYPE_R8A77965, "R8A77965" },
68 { RMOBILE_CPU_TYPE_R8A77970, "R8A77970" },
69 { RMOBILE_CPU_TYPE_R8A77980, "R8A77980" },
70 { RMOBILE_CPU_TYPE_R8A77990, "R8A77990" },
71 { RMOBILE_CPU_TYPE_R8A77995, "R8A77995" },
72 { 0x0, "CPU" },
73 };
74
rmobile_cpuinfo_idx(void)75 static int rmobile_cpuinfo_idx(void)
76 {
77 int i = 0;
78 u32 cpu_type = rmobile_get_cpu_type();
79
80 for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++)
81 if (rmobile_cpuinfo[i].cpu_type == cpu_type)
82 break;
83
84 return i;
85 }
86
87 #ifdef CONFIG_ARCH_MISC_INIT
arch_misc_init(void)88 int arch_misc_init(void)
89 {
90 int i, idx = rmobile_cpuinfo_idx();
91 char cpu[10] = { 0 };
92
93 for (i = 0; i < sizeof(cpu); i++)
94 cpu[i] = tolower(rmobile_cpuinfo[idx].cpu_name[i]);
95
96 env_set("platform", cpu);
97
98 return 0;
99 }
100 #endif
101
print_cpuinfo(void)102 int print_cpuinfo(void)
103 {
104 int i = rmobile_cpuinfo_idx();
105
106 printf("CPU: Renesas Electronics %s rev %d.%d\n",
107 rmobile_cpuinfo[i].cpu_name, rmobile_get_cpu_rev_integer(),
108 rmobile_get_cpu_rev_fraction());
109
110 return 0;
111 }
112 #else
print_cpuinfo(void)113 int print_cpuinfo(void)
114 {
115 printf("CPU: Renesas Electronics RZ/A1\n");
116 return 0;
117 }
118 #endif
119 #endif /* CONFIG_DISPLAY_CPUINFO */
120