src/soc/nvidia/tegra210/secmon.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright 2014 Google Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <arch/secmon.h>
  17 #include <console/console.h>
  18 #include <soc/addressmap.h>
  19 #include <soc/mmu_operations.h>
  20
  21 static void soc_get_secure_mem(uint64_t *base, size_t *size)
  22 {
  23         uintptr_t tz_base_mib;
  24         size_t tz_size_mib;
  25
  26         carveout_range(CARVEOUT_TZ, &tz_base_mib, &tz_size_mib);
  27
  28         tz_base_mib *= MiB;
  29         tz_size_mib *= MiB;
  30
  31         *base = tz_base_mib;
  32         *size = tz_size_mib;
  33 }
  34
  35 void soc_get_secmon_base_size(uint64_t *base, size_t *size)
  36 {
  37         uintptr_t tz_base;
  38         size_t ttb_size, tz_size;
  39
  40         soc_get_secure_mem(&tz_base, &tz_size);
  41
  42         ttb_size = CONFIG_TTB_SIZE_MB * MiB;
  43
  44         *base = tz_base + ttb_size;
  45         *size = tz_size - ttb_size;
  46 }