arch/x86: Add register_new_ioapic()
Using this I/O APIC IDs will be assigned incrementally
in the order of calling. I/O APIC ID #0 is reserved for
the I/O APIC delivering GSI #0.
Change-Id: I6493dc3b4fa542e81f80bb0355eac6dad30b93ec
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55313
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/arch/x86/ioapic.c b/src/arch/x86/ioapic.c
index d65637c..1440bb4 100644
--- a/src/arch/x86/ioapic.c
+++ b/src/arch/x86/ioapic.c
@@ -163,3 +163,16 @@
clear_vectors(ioapic_base, 0, ioapic_get_max_vectors(ioapic_base) - 1);
route_i8259_irq0(ioapic_base);
}
+
+void register_new_ioapic_gsi0(void *ioapic_base)
+{
+ setup_ioapic(ioapic_base, 0);
+}
+
+void register_new_ioapic(void *ioapic_base)
+{
+ static u8 ioapic_id;
+ ioapic_id++;
+ set_ioapic_id(ioapic_base, ioapic_id);
+ clear_vectors(ioapic_base, 0, ioapic_get_max_vectors(ioapic_base) - 1);
+}