arm: lib: Add GICV2 driver
Add a generic GICV2 driver that:
- parses the DT and generates the ACPI MADT subtables
- implement of_xlate() and allows irq_get_by_index() to return the
correct interrupt mappings
Map DT interrupts to ARM GIC interrupts as follows:
- Interrupt numbers ID32-ID1019 are used for SPIs
- ID0-ID15 are used for SGIs
- ID16-ID31 are used for PPIs
TEST: Booted on QEMU raspb4 using GICV2 driver model generated MADT.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index a7efed6..cf76051 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -68,6 +68,7 @@
ifneq ($(CONFIG_GICV2)$(CONFIG_GICV3),)
obj-y += gic_64.o
endif
+obj-$(CONFIG_DRIVER_GICV2) += gic-v2.o
obj-$(CONFIG_GIC_V3_ITS) += gic-v3-its.o
obj-y += interrupts_64.o
else