GICv3: GIC-600: Detect GIC-600 at runtime
The only difference between GIC-500 and GIC-600 relevant to TF-A is the
differing power management sequence.
A certain GIC implementation is detectable at runtime, for instance by
checking the IIDR register. Let's add that test before initiating the
GIC-600 specific sequence, so the code can be used on both GIC-600 and
GIC-500 chips alike, without deciding on a GIC chip at compile time.
This means that the GIC-500 "driver" is now redundant. To allow minimal
platform support, add a switch to disable GIC-600 support.
Change-Id: I17ea97d9fb05874772ebaa13e6678b4ba3415557
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/drivers/arm/gic/v3/gicv3.mk b/drivers/arm/gic/v3/gicv3.mk
index 0f40103..a2fc16f 100644
--- a/drivers/arm/gic/v3/gicv3.mk
+++ b/drivers/arm/gic/v3/gicv3.mk
@@ -5,7 +5,7 @@
#
# Default configuration values
-GICV3_IMPL ?= GIC500
+GICV3_SUPPORT_GIC600 ?= 0
GICV3_IMPL_GIC600_MULTICHIP ?= 0
GICV3_OVERRIDE_DISTIF_PWR_OPS ?= 0
GIC_ENABLE_V4_EXTN ?= 0
@@ -20,19 +20,14 @@
GICV3_SOURCES += drivers/arm/gic/v3/arm_gicv3_common.c
endif
-# Either GIC-600 or GIC-500 can be selected at one time
-ifeq (${GICV3_IMPL}, GIC600)
-# GIC-600 sources
-GICV3_SOURCES += drivers/arm/gic/v3/gic600.c
+GICV3_SOURCES += drivers/arm/gic/v3/gic-x00.c
ifeq (${GICV3_IMPL_GIC600_MULTICHIP}, 1)
GICV3_SOURCES += drivers/arm/gic/v3/gic600_multichip.c
endif
-else ifeq (${GICV3_IMPL}, GIC500)
-# GIC-500 sources
-GICV3_SOURCES += drivers/arm/gic/v3/gic500.c
-else
-$(error "Incorrect GICV3_IMPL value ${GICV3_IMPL}")
-endif
+
+# Set GIC-600 support
+$(eval $(call assert_boolean,GICV3_SUPPORT_GIC600))
+$(eval $(call add_define,GICV3_SUPPORT_GIC600))
# Set GICv4 extension
$(eval $(call assert_boolean,GIC_ENABLE_V4_EXTN))