feat(qemu): use mock attestation functions for RME
Since QEMU doesn't yet emulate hardware attestation, provide hardcoded
key and token to demonstrate attestation for RME. They are copied from
the mock values for the FVP platform.
Change-Id: I9ce686955345854e9409af5c3aad2a648adea226
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
diff --git a/plat/qemu/common/qemu_realm_attest_key.c b/plat/qemu/common/qemu_realm_attest_key.c
new file mode 100644
index 0000000..abd569b
--- /dev/null
+++ b/plat/qemu/common/qemu_realm_attest_key.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+#include <string.h>
+
+#include <plat/common/platform.h>
+
+static const uint8_t sample_delegated_key[] = {
+ 0x20, 0x11, 0xC7, 0xF0, 0x3C, 0xEE, 0x43, 0x25, 0x17, 0x6E,
+ 0x52, 0x4F, 0x03, 0x3C, 0x0C, 0xE1, 0xE2, 0x1A, 0x76, 0xE6,
+ 0xC1, 0xA4, 0xF0, 0xB8, 0x39, 0xAA, 0x1D, 0xF6, 0x1E, 0x0E,
+ 0x8A, 0x5C, 0x8A, 0x05, 0x74, 0x0F, 0x9B, 0x69, 0xEF, 0xA7,
+ 0xEB, 0x1A, 0x41, 0x85, 0xBD, 0x11, 0x7F, 0x68
+};
+
+/*
+ * Get the hardcoded delegated realm attestation key as QEMU
+ * does not support RSS.
+ */
+int plat_rmmd_get_cca_realm_attest_key(uintptr_t buf, size_t *len,
+ unsigned int type)
+{
+ if (*len < sizeof(sample_delegated_key)) {
+ return -EINVAL;
+ }
+
+ (void)memcpy((void *)buf, (const void *)sample_delegated_key,
+ sizeof(sample_delegated_key));
+ *len = sizeof(sample_delegated_key);
+
+ return 0;
+}