feat(drtm): add standard DRTM service
Added a dummy DRTM setup function and also, introduced DRTM SMCs
handling as per DRTM spec [1]. Few basic SMCs are handled in this
change such as ARM_DRTM_SVC_VERSION and ARM_DRTM_SVC_FEATURES
that returns DRTM version and functions ids supported respectively,
and others are dummy for now.
[1]: https://developer.arm.com/documentation/den0113/latest
Signed-off-by: Manish V Badarkhe <manish.badarkhe@arm.com>
Signed-off-by: Lucian Paul-Trifu <lucian.paultrifu@gmail.com>
Change-Id: I8c7afe920c78e064cbab2298f59e6837c70ba8ff
diff --git a/include/lib/smccc.h b/include/lib/smccc.h
index 1a39f24..9940ea9 100644
--- a/include/lib/smccc.h
+++ b/include/lib/smccc.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2022, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -41,6 +41,8 @@
#define FUNCID_NUM_MASK U(0xffff)
#define FUNCID_NUM_WIDTH U(16)
+#define FUNCID_MASK U(0xffffffff)
+
#define GET_SMC_NUM(id) (((id) >> FUNCID_NUM_SHIFT) & \
FUNCID_NUM_MASK)
#define GET_SMC_TYPE(id) (((id) >> FUNCID_TYPE_SHIFT) & \
diff --git a/include/services/drtm_svc.h b/include/services/drtm_svc.h
new file mode 100644
index 0000000..6845ace
--- /dev/null
+++ b/include/services/drtm_svc.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2022 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * DRTM service
+ *
+ * Authors:
+ * Lucian Paul-Trifu <lucian.paultrifu@gmail.com>
+ * Brian Nezvadovitz <brinez@microsoft.com> 2021-02-01
+ *
+ */
+
+#ifndef ARM_DRTM_SVC_H
+#define ARM_DRTM_SVC_H
+
+/*
+ * SMC function IDs for DRTM Service
+ * Upper word bits set: Fast call, SMC64, Standard Secure Svc. Call (OEN = 4)
+ */
+#define DRTM_FID(func_num) \
+ ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
+ (SMC_64 << FUNCID_CC_SHIFT) | \
+ (OEN_STD_START << FUNCID_OEN_SHIFT) | \
+ ((func_num) << FUNCID_NUM_SHIFT))
+
+#define DRTM_FNUM_SVC_VERSION U(0x110)
+#define DRTM_FNUM_SVC_FEATURES U(0x111)
+#define DRTM_FNUM_SVC_UNPROTECT_MEM U(0x113)
+#define DRTM_FNUM_SVC_DYNAMIC_LAUNCH U(0x114)
+#define DRTM_FNUM_SVC_CLOSE_LOCALITY U(0x115)
+#define DRTM_FNUM_SVC_GET_ERROR U(0x116)
+#define DRTM_FNUM_SVC_SET_ERROR U(0x117)
+#define DRTM_FNUM_SVC_SET_TCB_HASH U(0x118)
+#define DRTM_FNUM_SVC_LOCK_TCB_HASH U(0x119)
+
+#define ARM_DRTM_SVC_VERSION DRTM_FID(DRTM_FNUM_SVC_VERSION)
+#define ARM_DRTM_SVC_FEATURES DRTM_FID(DRTM_FNUM_SVC_FEATURES)
+#define ARM_DRTM_SVC_UNPROTECT_MEM DRTM_FID(DRTM_FNUM_SVC_UNPROTECT_MEM)
+#define ARM_DRTM_SVC_DYNAMIC_LAUNCH DRTM_FID(DRTM_FNUM_SVC_DYNAMIC_LAUNCH)
+#define ARM_DRTM_SVC_CLOSE_LOCALITY DRTM_FID(DRTM_FNUM_SVC_CLOSE_LOCALITY)
+#define ARM_DRTM_SVC_GET_ERROR DRTM_FID(DRTM_FNUM_SVC_GET_ERROR)
+#define ARM_DRTM_SVC_SET_ERROR DRTM_FID(DRTM_FNUM_SVC_SET_ERROR)
+#define ARM_DRTM_SVC_SET_TCB_HASH DRTM_FID(DRTM_FNUM_SVC_SET_TCB_HASH)
+#define ARM_DRTM_SVC_LOCK_TCB_HASH DRTM_FID(DRTM_FNUM_SVC_LOCK_TCB_HASH)
+
+#define is_drtm_fid(_fid) \
+ (((_fid) >= ARM_DRTM_SVC_VERSION) && ((_fid) <= ARM_DRTM_SVC_LOCK_TCB_HASH))
+
+/* ARM DRTM Service Calls version numbers */
+#define ARM_DRTM_VERSION_MAJOR U(0)
+#define ARM_DRTM_VERSION_MAJOR_SHIFT 16
+#define ARM_DRTM_VERSION_MAJOR_MASK U(0x7FFF)
+#define ARM_DRTM_VERSION_MINOR U(1)
+#define ARM_DRTM_VERSION_MINOR_SHIFT 0
+#define ARM_DRTM_VERSION_MINOR_MASK U(0xFFFF)
+
+#define ARM_DRTM_VERSION \
+ ((((ARM_DRTM_VERSION_MAJOR) & ARM_DRTM_VERSION_MAJOR_MASK) << \
+ ARM_DRTM_VERSION_MAJOR_SHIFT) \
+ | (((ARM_DRTM_VERSION_MINOR) & ARM_DRTM_VERSION_MINOR_MASK) << \
+ ARM_DRTM_VERSION_MINOR_SHIFT))
+
+#define ARM_DRTM_FUNC_SHIFT U(63)
+#define ARM_DRTM_FUNC_MASK U(0x1)
+#define ARM_DRTM_FUNC_ID U(0x0)
+#define ARM_DRTM_FEAT_ID U(0x1)
+
+/* Initialization routine for the DRTM service */
+int drtm_setup(void);
+
+/* Handler to be called to handle DRTM SMC calls */
+uint64_t drtm_smc_handler(uint32_t smc_fid,
+ uint64_t x1,
+ uint64_t x2,
+ uint64_t x3,
+ uint64_t x4,
+ void *cookie,
+ void *handle,
+ uint64_t flags);
+
+#endif /* ARM_DRTM_SVC_H */