projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| d65b78f1 SG |
1 | /** @file\r |
| 2 | Api's to communicate with OP-TEE OS (Trusted OS based on ARM TrustZone) via\r | |
| 3 | secure monitor calls.\r | |
| 4 | \r | |
| 5 | Copyright (c) 2018, Linaro Ltd. All rights reserved.<BR>\r | |
| 6 | \r | |
| 7 | This program and the accompanying materials\r | |
| 8 | are licensed and made available under the terms and conditions of the BSD License\r | |
| 9 | which accompanies this distribution. The full text of the license may be found at\r | |
| 10 | http://opensource.org/licenses/bsd-license.php\r | |
| 11 | \r | |
| 12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 14 | \r | |
| 15 | **/\r | |
| 16 | \r | |
| 17 | #include <Library/ArmSmcLib.h>\r | |
| 18 | #include <Library/BaseLib.h>\r | |
| 19 | #include <Library/OpteeLib.h>\r | |
| 20 | \r | |
| 21 | #include <IndustryStandard/ArmStdSmc.h>\r | |
| 22 | \r | |
| 23 | /**\r | |
| 24 | Check for OP-TEE presence.\r | |
| 25 | **/\r | |
| 26 | BOOLEAN\r | |
| 27 | EFIAPI\r | |
| 28 | IsOpteePresent (\r | |
| 29 | VOID\r | |
| 30 | )\r | |
| 31 | {\r | |
| 32 | ARM_SMC_ARGS ArmSmcArgs;\r | |
| 33 | \r | |
| 34 | // Send a Trusted OS Calls UID command\r | |
| 35 | ArmSmcArgs.Arg0 = ARM_SMC_ID_TOS_UID;\r | |
| 36 | ArmCallSmc (&ArmSmcArgs);\r | |
| 37 | \r | |
| 38 | if ((ArmSmcArgs.Arg0 == OPTEE_OS_UID0) &&\r | |
| 39 | (ArmSmcArgs.Arg1 == OPTEE_OS_UID1) &&\r | |
| 40 | (ArmSmcArgs.Arg2 == OPTEE_OS_UID2) &&\r | |
| 41 | (ArmSmcArgs.Arg3 == OPTEE_OS_UID3)) {\r | |
| 42 | return TRUE;\r | |
| 43 | } else {\r | |
| 44 | return FALSE;\r | |
| 45 | }\r | |
| 46 | }\r |