arch/arm/mach-uniphier/cpu-info.c

   1 /*
   2  * Copyright (C) 2013-2014 Panasonic Corporation
   3  * Copyright (C) 2015-2017 Socionext Inc.
   4  *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <linux/errno.h>
  11 #include <linux/io.h>
  12
  13 #include "soc-info.h"
  14
  15 int print_cpuinfo(void)
  16 {
  17         unsigned int id, model, rev, required_model = 1, required_rev = 1;
  18
  19         id = uniphier_get_soc_id();
  20         model = uniphier_get_soc_model();
  21         rev = uniphier_get_soc_revision();
  22
  23         puts("CPU:   ");
  24
  25         switch (id) {
  26         case UNIPHIER_SLD3_ID:
  27                 puts("sLD3 (MN2WS0220)");
  28                 required_model = 2;
  29                 break;
  30         case UNIPHIER_LD4_ID:
  31                 puts("LD4 (MN2WS0250)");
  32                 required_rev = 2;
  33                 break;
  34         case UNIPHIER_PRO4_ID:
  35                 puts("Pro4 (MN2WS0230)");
  36                 break;
  37         case UNIPHIER_SLD8_ID:
  38                 puts("sLD8 (MN2WS0270)");
  39                 break;
  40         case UNIPHIER_PRO5_ID:
  41                 puts("Pro5 (MN2WS0300)");
  42                 break;
  43         case UNIPHIER_PXS2_ID:
  44                 puts("PXs2 (MN2WS0310)");
  45                 break;
  46         case UNIPHIER_LD6B_ID:
  47                 puts("LD6b (MN2WS0320)");
  48                 break;
  49         case UNIPHIER_LD11_ID:
  50                 puts("LD11 (SC1405AP1)");
  51                 break;
  52         case UNIPHIER_LD20_ID:
  53                 puts("LD20 (SC1401AJ1)");
  54                 break;
  55         default:
  56                 printf("Unknown Processor ID (0x%x)\n", id);
  57                 return -ENOTSUPP;
  58         }
  59
  60         printf(" model %d (revision %d)\n", model, rev);
  61
  62         if (model < required_model) {
  63                 printf("Only model %d or newer is supported.\n",
  64                        required_model);
  65                 return -ENOTSUPP;
  66         } else if (rev < required_rev) {
  67                 printf("Only revision %d or newer is supported.\n",
  68                        required_rev);
  69                 return -ENOTSUPP;
  70         }
  71
  72         return 0;
  73 }