LXR uboot/arch/arm/mach-rmobile/cpu

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
   4 *
   5 * Copyright (C) 2013,2014 Renesas Electronics Corporation
   6 */
   7#include <common.h>
   8#include <asm/io.h>
   9
  10#define PRR_MASK                0x7fff
  11#define R8A7796_REV_1_0         0x5200
  12#define R8A7796_REV_1_1         0x5210
  13#define R8A7796_REV_1_3         0x5211
  14
  15static u32 rmobile_get_prr(void)
  16{
  17#ifdef CONFIG_RCAR_GEN3
  18        return readl(0xFFF00044);
  19#else
  20        return readl(0xFF000044);
  21#endif
  22}
  23
  24u32 rmobile_get_cpu_type(void)
  25{
  26        return (rmobile_get_prr() & 0x00007F00) >> 8;
  27}
  28
  29u32 rmobile_get_cpu_rev_integer(void)
  30{
  31        const u32 prr = rmobile_get_prr();
  32        const u32 rev = prr & PRR_MASK;
  33
  34        if (rev == R8A7796_REV_1_1 || rev == R8A7796_REV_1_3)
  35                return 1;
  36        else
  37                return ((prr & 0x000000F0) >> 4) + 1;
  38}
  39
  40u32 rmobile_get_cpu_rev_fraction(void)
  41{
  42        const u32 prr = rmobile_get_prr();
  43        const u32 rev = prr & PRR_MASK;
  44
  45        if (rev == R8A7796_REV_1_1)
  46                return 1;
  47        else if (rev == R8A7796_REV_1_3)
  48                return 3;
  49        else
  50                return prr & 0x0000000F;
  51}
  52