feat(rmmd): add support for RMM Boot interface
This patch adds the infrastructure needed to pass boot arguments from
EL3 to RMM and allocates a shared buffer between both worlds that can
be used, among others, to pass a boot manifest to RMM. The buffer is
composed a single memory page be used by a later EL3 <-> RMM interface
by all CPUs.
The RMM boot manifest is not implemented by this patch.
In addition to that, this patch also enables support for RMM when
RESET_TO_BL31 is enabled.
Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I855cd4758ee3843eadd9fb482d70a6d18954d82a
diff --git a/include/services/rmmd_svc.h b/include/services/rmmd_svc.h
index 156d89c..8e9bdab 100644
--- a/include/services/rmmd_svc.h
+++ b/include/services/rmmd_svc.h
@@ -40,7 +40,17 @@
/* 0x18F */
#define RMMD_RMI_REQ_COMPLETE SMC64_RMI_FID(U(0x3F))
-/* The SMC in the range 0x8400 0190 - 0x8400 01AF are reserved for RSIs.*/
+/* RMM_BOOT_COMPLETE arg0 error codes */
+#define E_RMM_BOOT_SUCCESS (0)
+#define E_RMM_BOOT_UNKNOWN (-1)
+#define E_RMM_BOOT_VERSION_MISMATCH (-2)
+#define E_RMM_BOOT_CPUS_OUT_OF_RANGE (-3)
+#define E_RMM_BOOT_CPU_ID_OUT_OF_RANGE (-4)
+#define E_RMM_BOOT_INVALID_SHARED_BUFFER (-5)
+#define E_RMM_BOOT_MANIFEST_VERSION_NOT_SUPPORTED (-6)
+#define E_RMM_BOOT_MANIFEST_DATA_ERROR (-7)
+
+/* The SMC in the range 0x8400 0191 - 0x8400 01AF are reserved for RSIs.*/
/*
* EL3 - RMM SMCs used for requesting RMMD services. These SMCs originate in Realm
@@ -121,6 +131,36 @@
/* ECC Curve types for attest key generation */
#define ATTEST_KEY_CURVE_ECC_SECP384R1 0
+/*
+ * RMM_BOOT_COMPLETE originates on RMM when the boot finishes (either cold
+ * or warm boot). This is handled by the RMM-EL3 interface SMC handler.
+ *
+ * RMM_BOOT_COMPLETE FID is located at the end of the available range.
+ */
+ /* 0x1CF */
+#define RMM_BOOT_COMPLETE SMC64_RMMD_EL3_FID(U(0x1F))
+
+/*
+ * The major version number of the RMM Boot Interface implementation.
+ * Increase this whenever the semantics of the boot arguments change making it
+ * backwards incompatible.
+ */
+#define RMM_EL3_IFC_VERSION_MAJOR (U(0))
+
+/*
+ * The minor version number of the RMM Boot Interface implementation.
+ * Increase this when a bug is fixed, or a feature is added without
+ * breaking compatibility.
+ */
+#define RMM_EL3_IFC_VERSION_MINOR (U(1))
+
+#define RMM_EL3_INTERFACE_VERSION \
+ (((RMM_EL3_IFC_VERSION_MAJOR << 16) & 0x7FFFF) | \
+ RMM_EL3_IFC_VERSION_MINOR)
+
+#define RMM_EL3_IFC_VERSION_GET_MAJOR(_version) (((_version) >> 16) \
+ & 0x7FFF)
+#define RMM_EL3_IFC_VERSION_GET_MAJOR_MINOR(_version) ((_version) & 0xFFFF)
#ifndef __ASSEMBLER__
#include <stdint.h>