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 /* R-Car Gen3 caches are enabled in memmap-gen3.c */
  10 #ifndef CONFIG_RCAR_GEN3
  11 #ifdef CONFIG_ARCH_CPU_INIT
  12 int arch_cpu_init(void)
  13 {
  14         icache_enable();
  15         return 0;
  16 }
  17 #endif
  18
  19 #ifndef CONFIG_SYS_DCACHE_OFF
  20 void enable_caches(void)
  21 {
  22         dcache_enable();
  23 }
  24 #endif
  25 #endif
  26
  27 #ifdef CONFIG_DISPLAY_CPUINFO
  28 static u32 __rmobile_get_cpu_type(void)
  29 {
  30         return 0x0;
  31 }
  32 u32 rmobile_get_cpu_type(void)
  33                 __attribute__((weak, alias("__rmobile_get_cpu_type")));
  34
  35 static u32 __rmobile_get_cpu_rev_integer(void)
  36 {
  37         return 0;
  38 }
  39 u32 rmobile_get_cpu_rev_integer(void)
  40                 __attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
  41
  42 static u32 __rmobile_get_cpu_rev_fraction(void)
  43 {
  44         return 0;
  45 }
  46 u32 rmobile_get_cpu_rev_fraction(void)
  47                 __attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
  48
  49 /* CPU infomation table */
  50 static const struct {
  51         u16 cpu_type;
  52         u8 cpu_name[10];
  53 } rmobile_cpuinfo[] = {
  54         { RMOBILE_CPU_TYPE_SH73A0, "SH73A0" },
  55         { RMOBILE_CPU_TYPE_R8A7740, "R8A7740" },
  56         { RMOBILE_CPU_TYPE_R8A7790, "R8A7790" },
  57         { RMOBILE_CPU_TYPE_R8A7791, "R8A7791" },
  58         { RMOBILE_CPU_TYPE_R8A7792, "R8A7792" },
  59         { RMOBILE_CPU_TYPE_R8A7793, "R8A7793" },
  60         { RMOBILE_CPU_TYPE_R8A7794, "R8A7794" },
  61         { RMOBILE_CPU_TYPE_R8A7795, "R8A7795" },
  62         { RMOBILE_CPU_TYPE_R8A7796, "R8A7796" },
  63         { RMOBILE_CPU_TYPE_R8A77965, "R8A77965" },
  64         { RMOBILE_CPU_TYPE_R8A77970, "R8A77970" },
  65         { RMOBILE_CPU_TYPE_R8A77990, "R8A77990" },
  66         { RMOBILE_CPU_TYPE_R8A77995, "R8A77995" },
  67         { 0x0, "CPU" },
  68 };
  69
  70 int print_cpuinfo(void)
  71 {
  72         int i = 0;
  73         u32 cpu_type = rmobile_get_cpu_type();
  74         for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++) {
  75                 if (rmobile_cpuinfo[i].cpu_type == cpu_type) {
  76                         printf("CPU: Renesas Electronics %s rev %d.%d\n",
  77                                rmobile_cpuinfo[i].cpu_name,
  78                                rmobile_get_cpu_rev_integer(),
  79                                rmobile_get_cpu_rev_fraction());
  80                         break;
  81                 }
  82         }
  83         return 0;
  84 }
  85 #endif /* CONFIG_DISPLAY_CPUINFO */