Implement PSCI_FEATURES API
This patch implements the PSCI_FEATURES function which is a mandatory
API in the PSCI 1.0 specification. A capability variable is
constructed during initialization by examining the plat_pm_ops and
spd_pm_ops exported by the platform and the Secure Payload Dispatcher.
This is used by the PSCI FEATURES function to determine which
PSCI APIs are supported by the platform.
Change-Id: I147ffc1bd5d90b469bd3cc4bbe0a20e95c247df7
diff --git a/include/bl31/services/psci.h b/include/bl31/services/psci.h
index de6fe4b..5967581 100644
--- a/include/bl31/services/psci.h
+++ b/include/bl31/services/psci.h
@@ -61,11 +61,15 @@
#define PSCI_MIG_INFO_UP_CPU_AARCH64 0xc4000007
#define PSCI_SYSTEM_OFF 0x84000008
#define PSCI_SYSTEM_RESET 0x84000009
+#define PSCI_FEATURES 0x8400000A
+
+/* Macro to help build the psci capabilities bitfield */
+#define define_psci_cap(x) (1 << (x & 0x1f))
/*
* Number of PSCI calls (above) implemented
*/
-#define PSCI_NUM_CALLS 15
+#define PSCI_NUM_CALLS 16
/*******************************************************************************
* PSCI Migrate and friends
@@ -97,6 +101,18 @@
PSTATE_AFF_LVL_MASK)
/*******************************************************************************
+ * PSCI CPU_FEATURES feature flag specific defines
+ ******************************************************************************/
+/* Features flags for CPU SUSPEND power state parameter format. Bits [1:1] */
+#define FF_PSTATE_SHIFT 1
+#define FF_PSTATE_ORIG 0
+#define FF_PSTATE_EXTENDED 1
+
+/* Features flags for CPU SUSPEND OS Initiated mode support. Bits [0:0] */
+#define FF_MODE_SUPPORT_SHIFT 0
+#define FF_SUPPORTS_OS_INIT_MODE 1
+
+/*******************************************************************************
* PSCI version
******************************************************************************/
#define PSCI_MAJOR_VER (0 << 16)