From c78c46d433eb6103c943dc8f7db9fa970643acce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= <kyosti.malkki@gmail.com>
Date: Sun, 20 Jun 2021 15:44:32 +0300
Subject: cpu/x86/lapic: Only deliver ExtINT to BSP
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ExtINT is related to external PIC mode i8259 interrupts,
they should be delivered to one CPU (BSP) only.

Change-Id: I78490d2cbe3d9f52e10ef2471508263fd6c146ba
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42434
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
---
 src/cpu/x86/lapic/lapic.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/cpu/x86/lapic/lapic.c b/src/cpu/x86/lapic/lapic.c
index 58e45248ab..b4d3c4de42 100644
--- a/src/cpu/x86/lapic/lapic.c
+++ b/src/cpu/x86/lapic/lapic.c
@@ -5,6 +5,7 @@
 #include <cpu/x86/lapic_def.h>
 #include <cpu/x86/msr.h>
 #include <console/console.h>
+#include <smp/node.h>
 #include <stdint.h>
 
 void enable_lapic(void)
@@ -55,7 +56,11 @@ static void lapic_virtual_wire_mode_init(void)
 	uint32_t mask = LAPIC_LVT_MASKED | LAPIC_LVT_LEVEL_TRIGGER | LAPIC_INPUT_POLARITY |
 			LAPIC_DELIVERY_MODE_MASK;
 
-	lapic_update32(LAPIC_LVT0, ~mask, LAPIC_DELIVERY_MODE_EXTINT);
+	if (boot_cpu())
+		lapic_update32(LAPIC_LVT0, ~mask, LAPIC_DELIVERY_MODE_EXTINT);
+	else
+		lapic_update32(LAPIC_LVT0, ~mask, LAPIC_LVT_MASKED |
+						  LAPIC_DELIVERY_MODE_EXTINT);
 
 	lapic_update32(LAPIC_LVT1, ~mask, LAPIC_DELIVERY_MODE_NMI);
 }
-- 
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