common/scp03.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2021, Foundries.IO
   4  *
   5  */
   6
   7 #include <scp03.h>
   8 #include <tee.h>
   9 #include <tee/optee_ta_scp03.h>
  10 #include <linux/errno.h>
  11 #include <linux/string.h>
  12
  13 static int scp03_enable(bool provision)
  14 {
  15         const struct tee_optee_ta_uuid uuid = PTA_SCP03_UUID;
  16         struct tee_open_session_arg session;
  17         struct tee_invoke_arg invoke;
  18         struct tee_param param;
  19         struct udevice *tee = NULL;
  20
  21         tee = tee_find_device(tee, NULL, NULL, NULL);
  22         if (!tee)
  23                 return -ENODEV;
  24
  25         memset(&session, 0, sizeof(session));
  26         tee_optee_ta_uuid_to_octets(session.uuid, &uuid);
  27         if (tee_open_session(tee, &session, 0, NULL))
  28                 return -ENXIO;
  29
  30         memset(&param, 0, sizeof(param));
  31         param.attr = TEE_PARAM_ATTR_TYPE_VALUE_INPUT;
  32         param.u.value.a = provision;
  33
  34         memset(&invoke, 0, sizeof(invoke));
  35         invoke.func = PTA_CMD_ENABLE_SCP03;
  36         invoke.session = session.session;
  37
  38         if (tee_invoke_func(tee, &invoke, 1, &param))
  39                 return -EIO;
  40
  41         tee_close_session(tee, session.session);
  42
  43         return 0;
  44 }
  45
  46 int tee_enable_scp03(void)
  47 {
  48         return scp03_enable(false);
  49 }
  50
  51 int tee_provision_scp03(void)
  52 {
  53         return scp03_enable(true);
  54 }