arch/arm/mach-rmobile/cpu_info-rcar.c

   1 /*
   2  * arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
   3  *
   4  * Copyright (C) 2013,2014 Renesas Electronics Corporation
   5  *
   6  * SPDX-License-Identifier: GPL-2.0
   7  */
   8 #include <common.h>
   9 #include <asm/io.h>
  10
  11 #define PRR                     0xFF000044
  12 #define PRR_MASK                0x7fff
  13 #define R8A7796_REV_1_0         0x5200
  14 #define R8A7796_REV_1_1         0x5210
  15
  16 u32 rmobile_get_cpu_type(void)
  17 {
  18         return (readl(PRR) & 0x00007F00) >> 8;
  19 }
  20
  21 u32 rmobile_get_cpu_rev_integer(void)
  22 {
  23         const u32 prr = readl(PRR);
  24
  25         if ((prr & PRR_MASK) == R8A7796_REV_1_1)
  26                 return 1;
  27         else
  28                 return ((prr & 0x000000F0) >> 4) + 1;
  29 }
  30
  31 u32 rmobile_get_cpu_rev_fraction(void)
  32 {
  33         const u32 prr = readl(PRR);
  34
  35         if ((prr & PRR_MASK) == R8A7796_REV_1_1)
  36                 return 1;
  37         else
  38                 return prr & 0x0000000F;
  39 }