plat/socionext/uniphier/uniphier_soc_info.c

   1 /*
   2  * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6
   7 #include <lib/mmio.h>
   8
   9 #include "uniphier.h"
  10
  11 #define UNIPHIER_REVISION               0x5f800000
  12
  13 static unsigned int uniphier_get_revision_field(unsigned int mask,
  14                                                 unsigned int shift)
  15 {
  16         uint32_t revision = mmio_read_32(UNIPHIER_REVISION);
  17
  18         return (revision >> shift) & mask;
  19 }
  20
  21 unsigned int uniphier_get_soc_type(void)
  22 {
  23         return uniphier_get_revision_field(0xff, 16);
  24 }
  25
  26 unsigned int uniphier_get_soc_model(void)
  27 {
  28         return uniphier_get_revision_field(0x07, 8);
  29 }
  30
  31 unsigned int uniphier_get_soc_revision(void)
  32 {
  33         return uniphier_get_revision_field(0x1f, 0);
  34 }
  35
  36 unsigned int uniphier_get_soc_id(void)
  37 {
  38         uint32_t type = uniphier_get_soc_type();
  39
  40         switch (type) {
  41         case 0x31:
  42                 return UNIPHIER_SOC_LD11;
  43         case 0x32:
  44                 return UNIPHIER_SOC_LD20;
  45         case 0x35:
  46                 return UNIPHIER_SOC_PXS3;
  47         default:
  48                 return UNIPHIER_SOC_UNKNOWN;
  49         }
  50 }