From d591a5a328b7185f7e6e4ff755f74594e7232dfc Mon Sep 17 00:00:00 2001
From: Kyösti Mälkki <kyosti.malkki@gmail.com>
Date: Mon, 25 Jan 2021 17:05:35 +0200
Subject: ACPI: Move common _PIC method
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Change-Id: I659835354570fb1d4860fcbddf2a51831170a374
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50470
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
---
 src/acpi/dsdt_top.asl | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/acpi/dsdt_top.asl')

diff --git a/src/acpi/dsdt_top.asl b/src/acpi/dsdt_top.asl
index 4300f0a65e..3e6bb1c530 100644
--- a/src/acpi/dsdt_top.asl
+++ b/src/acpi/dsdt_top.asl
@@ -16,3 +16,17 @@ Name (PICM, Zero)
 
 /* Power state (AC = 1) */
 Name (PWRS, One)
+
+/*
+ * The _PIC method is called by the OS to choose between interrupt
+ * routing via the i8259 interrupt controller or the APIC.
+ *
+ * _PIC is called with a parameter of 0 for i8259 configuration and
+ * with a parameter of 1 for Local Apic/IOAPIC configuration.
+ */
+
+Method (_PIC, 1)
+{
+	/* Remember the OS' IRQ routing choice. */
+	PICM = Arg0
+}
-- 
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