arch/arm/cpu/armv7/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         dcache_enable();
  22 }
  23 #endif
  24
  25 #ifdef CONFIG_DISPLAY_CPUINFO
  26 static u32 __rmobile_get_cpu_type(void)
  27 {
  28         return 0x0;
  29 }
  30 u32 rmobile_get_cpu_type(void)
  31                 __attribute__((weak, alias("__rmobile_get_cpu_type")));
  32
  33 static u32 __rmobile_get_cpu_rev_integer(void)
  34 {
  35         return 0;
  36 }
  37 u32 rmobile_get_cpu_rev_integer(void)
  38                 __attribute__((weak, alias("__rmobile_get_cpu_rev_integer")));
  39
  40 static u32 __rmobile_get_cpu_rev_fraction(void)
  41 {
  42         return 0;
  43 }
  44 u32 rmobile_get_cpu_rev_fraction(void)
  45                 __attribute__((weak, alias("__rmobile_get_cpu_rev_fraction")));
  46
  47 /* CPU infomation table */
  48 static const struct {
  49         u16 cpu_type;
  50         u8 cpu_name[10];
  51 } rmobile_cpuinfo[] = {
  52         { 0x37, "SH73A0" },
  53         { 0x40, "R8A7740" },
  54         { 0x45, "R8A7790" },
  55         { 0x47, "R8A7791" },
  56         { 0x4B, "R8A7793" },
  57         { 0x4C, "R8A7794" },
  58         { 0x0, "CPU" },
  59 };
  60
  61 int print_cpuinfo(void)
  62 {
  63         int i = 0;
  64         u32 cpu_type = rmobile_get_cpu_type();
  65         for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++) {
  66                 if (rmobile_cpuinfo[i].cpu_type == cpu_type) {
  67                         printf("CPU: Renesas Electronics %s rev %d.%d\n",
  68                                rmobile_cpuinfo[i].cpu_name,
  69                                rmobile_get_cpu_rev_integer(),
  70                                rmobile_get_cpu_rev_fraction());
  71                         break;
  72                 }
  73         }
  74         return 0;
  75 }
  76 #endif /* CONFIG_DISPLAY_CPUINFO */