arch/arm/mach-rmobile/cpu_info.c

   1 /*
   2  * (C) Copyright 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
   3  * (C) Copyright 2012 Renesas Solutions Corp.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7 #include <common.h>
   8 #include <asm/io.h>
   9
  10 #ifdef CONFIG_ARCH_CPU_INIT
  11 int arch_cpu_init(void)
  12 {
  13         icache_enable();
  14         return 0;
  15 }
  16 #endif
  17
  18 #ifndef CONFIG_SYS_DCACHE_OFF
  19 void enable_caches(void)
  20 {
  21 #if defined(CONFIG_RCAR_GEN3)
  22         rcar_gen3_memmap_fixup();
  23 #endif
  24         dcache_enable();
  25 }
  26 #endif
  27
  28 #ifdef CONFIG_DISPLAY_CPUINFO
  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
  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
  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         { 0x0, "CPU" },
  65 };
  66
  67 int print_cpuinfo(void)
  68 {
  69         int i = 0;
  70         u32 cpu_type = rmobile_get_cpu_type();
  71         for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++) {
  72                 if (rmobile_cpuinfo[i].cpu_type == cpu_type) {
  73                         printf("CPU: Renesas Electronics %s rev %d.%d\n",
  74                                rmobile_cpuinfo[i].cpu_name,
  75                                rmobile_get_cpu_rev_integer(),
  76                                rmobile_get_cpu_rev_fraction());
  77                         break;
  78                 }
  79         }
  80         return 0;
  81 }
  82 #endif /* CONFIG_DISPLAY_CPUINFO */