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/cache.h>
9 #include <init.h>
10 #include <asm/io.h>
11 #include <env.h>
12 #include <linux/ctype.h>
13
14 #ifdef CONFIG_ARCH_CPU_INIT
arch_cpu_init(void)15 int arch_cpu_init(void)
16 {
17 icache_enable();
18 return 0;
19 }
20 #endif
21
22 /* R-Car Gen3 D-cache is enabled in memmap-gen3.c */
23 #ifndef CONFIG_RCAR_GEN3
24 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
enable_caches(void)25 void enable_caches(void)
26 {
27 dcache_enable();
28 }
29 #endif
30 #endif
31
32 #ifdef CONFIG_DISPLAY_CPUINFO
33 #ifndef CONFIG_RZA1
__rmobile_get_cpu_type(void)34 static u32 __rmobile_get_cpu_type(void)
35 {
36 return 0x0;
37 }
38 u32 rmobile_get_cpu_type(void)
39 __attribute__((weak, alias("__rmobile_get_cpu_type")));
40
__rmobile_get_cpu_rev_integer(void)41 static u32 __rmobile_get_cpu_rev_integer(void)
42 {
43 return 0;
44 }
45 u32 rmobile_get_cpu_rev_integer(void)
46 __attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
47
__rmobile_get_cpu_rev_fraction(void)48 static u32 __rmobile_get_cpu_rev_fraction(void)
49 {
50 return 0;
51 }
52 u32 rmobile_get_cpu_rev_fraction(void)
53 __attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
54
55 /* CPU infomation table */
56 static const struct {
57 u16 cpu_type;
58 u8 cpu_name[10];
59 } rmobile_cpuinfo[] = {
60 { RMOBILE_CPU_TYPE_SH73A0, "SH73A0" },
61 { RMOBILE_CPU_TYPE_R8A7740, "R8A7740" },
62 { RMOBILE_CPU_TYPE_R8A7790, "R8A7790" },
63 { RMOBILE_CPU_TYPE_R8A7791, "R8A7791" },
64 { RMOBILE_CPU_TYPE_R8A7792, "R8A7792" },
65 { RMOBILE_CPU_TYPE_R8A7793, "R8A7793" },
66 { RMOBILE_CPU_TYPE_R8A7794, "R8A7794" },
67 { RMOBILE_CPU_TYPE_R8A7795, "R8A7795" },
68 { RMOBILE_CPU_TYPE_R8A7796, "R8A7796" },
69 { RMOBILE_CPU_TYPE_R8A77965, "R8A77965" },
70 { RMOBILE_CPU_TYPE_R8A77970, "R8A77970" },
71 { RMOBILE_CPU_TYPE_R8A77980, "R8A77980" },
72 { RMOBILE_CPU_TYPE_R8A77990, "R8A77990" },
73 { RMOBILE_CPU_TYPE_R8A77995, "R8A77995" },
74 { 0x0, "CPU" },
75 };
76
rmobile_cpuinfo_idx(void)77 static int rmobile_cpuinfo_idx(void)
78 {
79 int i = 0;
80 u32 cpu_type = rmobile_get_cpu_type();
81
82 for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++)
83 if (rmobile_cpuinfo[i].cpu_type == cpu_type)
84 break;
85
86 return i;
87 }
88
89 #ifdef CONFIG_ARCH_MISC_INIT
arch_misc_init(void)90 int arch_misc_init(void)
91 {
92 int i, idx = rmobile_cpuinfo_idx();
93 char cpu[10] = { 0 };
94
95 for (i = 0; i < sizeof(cpu); i++)
96 cpu[i] = tolower(rmobile_cpuinfo[idx].cpu_name[i]);
97
98 env_set("platform", cpu);
99
100 return 0;
101 }
102 #endif
103
print_cpuinfo(void)104 int print_cpuinfo(void)
105 {
106 int i = rmobile_cpuinfo_idx();
107
108 printf("CPU: Renesas Electronics %s rev %d.%d\n",
109 rmobile_cpuinfo[i].cpu_name, rmobile_get_cpu_rev_integer(),
110 rmobile_get_cpu_rev_fraction());
111
112 return 0;
113 }
114 #else
print_cpuinfo(void)115 int print_cpuinfo(void)
116 {
117 printf("CPU: Renesas Electronics RZ/A1\n");
118 return 0;
119 }
120 #endif
121 #endif /* CONFIG_DISPLAY_CPUINFO */
122