1 files changed, 70 insertions, 0 deletions
diff --git a/services/std_svc/drtm/drtm_main.h b/services/std_svc/drtm/drtm_main.h
new file mode 100644
index 000000000..713199a71
--- /dev/null
+++ b/services/std_svc/drtm/drtm_main.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2021 Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier:    BSD-3-Clause
+ *
+ */
+#ifndef DRTM_MAIN_H
+#define DRTM_MAIN_H
+
+#include <stdint.h>
+
+#include <lib/smccc.h>
+
+#include "drtm_dma_prot.h"
+
+#define ALIGNED_UP(x, a) __extension__ ({ \
+	__typeof__(a) _a = (a); \
+	__typeof__(a) _one = 1; \
+	assert(IS_POWER_OF_TWO(_a)); \
+	((x) + (_a - _one)) & ~(_a - _one); \
+})
+
+#define ALIGNED_DOWN(x, a) __extension__ ({ \
+	__typeof__(a) _a = (a); \
+	__typeof__(a) _one = 1; \
+	assert(IS_POWER_OF_TWO(_a)); \
+	(x) & ~(_a - _one); \
+})
+
+
+#define DRTM_PAGE_SIZE        (4 * (1 << 10))
+#define DRTM_PAGE_SIZE_STR    "4-KiB"
+
+
+enum drtm_retc {
+	SUCCESS = SMC_OK,
+	NOT_SUPPORTED = SMC_UNK,
+	INVALID_PARAMETERS = -2,
+	DENIED = -3,
+	NOT_FOUND = -4,
+	INTERNAL_ERROR = -5,
+	MEM_PROTECT_INVALID = -6,
+};
+
+struct __packed drtm_dl_args_v1 {
+	uint16_t version;        /* Must be 1. */
+	uint8_t __res[2];
+	uint32_t features;
+	uint64_t dlme_paddr;
+	uint64_t dlme_size;
+	uint64_t dlme_img_off;
+	uint64_t dlme_img_ep_off;
+	uint64_t dlme_img_size;
+	uint64_t dlme_data_off;
+	uint64_t dce_nwd_paddr;
+	uint64_t dce_nwd_size;
+	drtm_dl_dma_prot_args_v1_t dma_prot_args;
+} __aligned(__alignof(uint16_t /* First member's type, `uint16_t version' */));
+#define DL_ARGS_GET_DMA_PROT_TYPE(a) (((a)->features >> 3) & 0x7U)
+#define DL_ARGS_GET_PCR_SCHEMA(a)    (((a)->features >> 1) & 0x3U)
+#define DL_ARGS_GET_DLME_ENTRY_POINT(a) \
+             (((a)->dlme_paddr + (a)->dlme_img_off + (a)->dlme_img_ep_off))
+
+/*
+ * Version-independent type.  May be used to avoid excessive line of code
+ * changes when migrating to new struct versions.
+ */
+typedef struct drtm_dl_args_v1 struct_drtm_dl_args;
+
+#endif /* DRTM_MAIN_H */