From fb5d1573c35876b0557b5a117d2dde025e88b956 Mon Sep 17 00:00:00 2001
From: Jon Murphy <jpmurphy@google.com>
Date: Wed, 29 Mar 2023 18:28:42 -0600
Subject: mb/google/myst: Add initial fch irq routing

Add initial fch irq routing table for Myst.

BUG=b:275946702
TEST=builds

Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: Ic81c3cbfbb30a0beb3c4083624cf19abe6d1e694
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74109
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/mainboard/google/myst/mainboard.c | 40 ++++++++++++++++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/mainboard/google/myst/mainboard.c b/src/mainboard/google/myst/mainboard.c
index e433c98035..3a25e8c834 100644
--- a/src/mainboard/google/myst/mainboard.c
+++ b/src/mainboard/google/myst/mainboard.c
@@ -5,10 +5,48 @@
 #include <baseboard/variants.h>
 #include <console/console.h>
 #include <device/device.h>
+#include <soc/acpi.h>
 #include <variant/ec.h>
 
+/* The IRQ mapping in fch_irq_map ends up getting written to the indirect address space that is
+   accessed via I/O ports 0xc00/0xc01. */
+
+/*
+ * This controls the device -> IRQ routing.
+ *
+ * Hardcoded IRQs:
+ *  0: timer < soc/amd/common/acpi/lpc.asl
+ *  1: i8042 - Keyboard
+ *  2: cascade
+ *  8: rtc0 <- soc/amd/common/acpi/lpc.asl
+ *  9: acpi <- soc/amd/common/acpi/lpc.asl
+ */
+
 static const struct fch_irq_routing fch_irq_map[] = {
-	{ 0,	0x00,		0x00 },
+	{ PIRQ_A,	12,		PIRQ_NC },
+	{ PIRQ_B,	14,		PIRQ_NC },
+	{ PIRQ_C,	15,		PIRQ_NC },
+	{ PIRQ_D,	12,		PIRQ_NC },
+	{ PIRQ_E,	14,		PIRQ_NC },
+	{ PIRQ_F,	15,		PIRQ_NC },
+	{ PIRQ_G,	12,		PIRQ_NC },
+	{ PIRQ_H,	14,		PIRQ_NC },
+
+	{ PIRQ_SCI,	ACPI_SCI_IRQ,	ACPI_SCI_IRQ },
+	{ PIRQ_SDIO,	PIRQ_NC,	PIRQ_NC },
+	{ PIRQ_GPIO,	11,		11 },
+	{ PIRQ_I2C0,	10,		10 },
+	{ PIRQ_I2C1,	 7,		 7 },
+	{ PIRQ_I2C2,	 6,		 6 },
+	{ PIRQ_I2C3,	 5,		 5 },
+	{ PIRQ_UART0,	 4,		 4 },
+	{ PIRQ_UART1,	 3,		 3 },
+
+	/* The MISC registers are not interrupt numbers */
+	{ PIRQ_MISC,	0xfa,		0x00 },
+	{ PIRQ_MISC0,	0x91,		0x00 },
+	{ PIRQ_HPET_L,	0x00,		0x00 },
+	{ PIRQ_HPET_H,	0x00,		0x00 },
 };
 
 const struct fch_irq_routing *mb_get_fch_irq_mapping(size_t *length)
-- 
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