1 files changed, 74 insertions, 0 deletions
diff --git a/include/plat/common/plat_drtm.h b/include/plat/common/plat_drtm.h
new file mode 100644
index 0000000..e96e719
--- /dev/null
+++ b/include/plat/common/plat_drtm.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_DRTM_H
+#define PLAT_DRTM_H
+
+#include <stdint.h>
+#include <lib/xlat_tables/xlat_tables_compat.h>
+
+typedef struct {
+	uint8_t max_num_mem_prot_regions;
+	uint8_t dma_protection_support;
+} plat_drtm_dma_prot_features_t;
+
+typedef struct {
+	bool tpm_based_hash_support;
+	uint32_t firmware_hash_algorithm;
+} plat_drtm_tpm_features_t;
+
+typedef struct {
+	uint64_t region_address;
+	uint64_t region_size_type;
+} __attribute__((packed)) drtm_mem_region_t;
+
+/*
+ * Memory region descriptor table structure as per DRTM beta0 section 3.13
+ * Table 11 MEMORY_REGION_DESCRIPTOR_TABLE
+ */
+typedef struct {
+	uint16_t revision;
+	uint16_t reserved;
+	uint32_t num_regions;
+	drtm_mem_region_t region[];
+} __attribute__((packed)) drtm_memory_region_descriptor_table_t;
+
+/* platform specific address map functions */
+const mmap_region_t *plat_get_addr_mmap(void);
+
+/* platform-specific DMA protection functions */
+bool plat_has_non_host_platforms(void);
+bool plat_has_unmanaged_dma_peripherals(void);
+unsigned int plat_get_total_smmus(void);
+void plat_enumerate_smmus(const uintptr_t **smmus_out,
+			  size_t *smmu_count_out);
+const plat_drtm_dma_prot_features_t *plat_drtm_get_dma_prot_features(void);
+uint64_t plat_drtm_dma_prot_get_max_table_bytes(void);
+
+/* platform-specific TPM functions */
+const plat_drtm_tpm_features_t *plat_drtm_get_tpm_features(void);
+
+/*
+ * TODO: Implement these functions as per the platform use case,
+ * as of now none of the platform uses these functions
+ */
+uint64_t plat_drtm_get_min_size_normal_world_dce(void);
+uint64_t plat_drtm_get_tcb_hash_table_size(void);
+uint64_t plat_drtm_get_imp_def_dlme_region_size(void);
+uint64_t plat_drtm_get_tcb_hash_features(void);
+
+/* DRTM error handling functions */
+int plat_set_drtm_error(uint64_t error_code);
+int plat_get_drtm_error(uint64_t *error_code);
+
+/*
+ * Platform-specific function to ensure passed region lies within
+ * Non-Secure region of DRAM
+ */
+int plat_drtm_validate_ns_region(uintptr_t region_start,
+				 size_t region_size);
+
+#endif /* PLAT_DRTM_H */