arch/arm/mach-rmobile/cpu_info.c

   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
   9 #ifdef CONFIG_ARCH_CPU_INIT
  10 int arch_cpu_init(void)
  11 {
  12         icache_enable();
  13         return 0;
  14 }
  15 #endif
  16
  17 #ifndef CONFIG_SYS_DCACHE_OFF
  18 void enable_caches(void)
  19 {
  20         dcache_enable();
  21 }
  22 #endif
  23
  24 #ifdef CONFIG_DISPLAY_CPUINFO
  25 static u32 __rmobile_get_cpu_type(void)
  26 {
  27         return 0x0;
  28 }
  29 u32 rmobile_get_cpu_type(void)
  30                 __attribute__((weak, alias("__rmobile_get_cpu_type")));
  31
  32 static u32 __rmobile_get_cpu_rev_integer(void)
  33 {
  34         return 0;
  35 }
  36 u32 rmobile_get_cpu_rev_integer(void)
  37                 __attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
  38
  39 static u32 __rmobile_get_cpu_rev_fraction(void)
  40 {
  41         return 0;
  42 }
  43 u32 rmobile_get_cpu_rev_fraction(void)
  44                 __attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
  45
  46 /* CPU infomation table */
  47 static const struct {
  48         u16 cpu_type;
  49         u8 cpu_name[10];
  50 } rmobile_cpuinfo[] = {
  51         { RMOBILE_CPU_TYPE_SH73A0, "SH73A0" },
  52         { RMOBILE_CPU_TYPE_R8A7740, "R8A7740" },
  53         { RMOBILE_CPU_TYPE_R8A7790, "R8A7790" },
  54         { RMOBILE_CPU_TYPE_R8A7791, "R8A7791" },
  55         { RMOBILE_CPU_TYPE_R8A7792, "R8A7792" },
  56         { RMOBILE_CPU_TYPE_R8A7793, "R8A7793" },
  57         { RMOBILE_CPU_TYPE_R8A7794, "R8A7794" },
  58         { RMOBILE_CPU_TYPE_R8A7795, "R8A7795" },
  59         { RMOBILE_CPU_TYPE_R8A7796, "R8A7796" },
  60         { RMOBILE_CPU_TYPE_R8A77965, "R8A77965" },
  61         { RMOBILE_CPU_TYPE_R8A77970, "R8A77970" },
  62         { RMOBILE_CPU_TYPE_R8A77995, "R8A77995" },
  63         { 0x0, "CPU" },
  64 };
  65
  66 int print_cpuinfo(void)
  67 {
  68         int i = 0;
  69         u32 cpu_type = rmobile_get_cpu_type();
  70         for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++) {
  71                 if (rmobile_cpuinfo[i].cpu_type == cpu_type) {
  72                         printf("CPU: Renesas Electronics %s rev %d.%d\n",
  73                                rmobile_cpuinfo[i].cpu_name,
  74                                rmobile_get_cpu_rev_integer(),
  75                                rmobile_get_cpu_rev_fraction());
  76                         break;
  77                 }
  78         }
  79         return 0;
  80 }
  81 #endif /* CONFIG_DISPLAY_CPUINFO */