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-rw-r--r--include/services/trp/trp_helpers.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/include/services/trp/trp_helpers.h b/include/services/trp/trp_helpers.h
new file mode 100644
index 0000000..8e786e2
--- /dev/null
+++ b/include/services/trp/trp_helpers.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef TRP_HELPERS_H
+#define TRP_HELPERS_H
+
+/* Definitions to help the assembler access the SMC/ERET args structure */
+#define TRP_ARGS_SIZE TRP_ARGS_END
+#define TRP_ARG0 0x0
+#define TRP_ARG1 0x8
+#define TRP_ARG2 0x10
+#define TRP_ARG3 0x18
+#define TRP_ARG4 0x20
+#define TRP_ARG5 0x28
+#define TRP_ARG6 0x30
+#define TRP_ARG7 0x38
+#define TRP_ARGS_END 0x40
+
+#ifndef __ASSEMBLER__
+
+#include <platform_def.h>
+
+/* Data structure to hold SMC arguments */
+typedef struct trp_args {
+ uint64_t regs[TRP_ARGS_END >> 3];
+} __aligned(CACHE_WRITEBACK_GRANULE) trp_args_t;
+
+trp_args_t *set_smc_args(uint64_t arg0,
+ uint64_t arg1,
+ uint64_t arg2,
+ uint64_t arg3,
+ uint64_t arg4,
+ uint64_t arg5,
+ uint64_t arg6,
+ uint64_t arg7);
+
+__dead2 void trp_boot_abort(uint64_t err);
+
+#endif /* __ASSEMBLER __ */
+#endif /* TRP_HELPERS_H */