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authorLubomir Rintel <lkundrak@v3.sk>2017-02-26 16:41:36 +0100
committerMartin Roth <martinroth@google.com>2017-08-28 15:27:55 +0000
commit24512dee2be71ab4e203070de48f97a1135a7da1 (patch)
tree10cdc30220ef08a0a0f8e821ba842a8d1343ea94 /src/mainboard
parent382783d01782f09e8394b99b87f0201ac869b8c1 (diff)
mainboard/winnet/g170: Initialize the IRQ routing
Initialize IRQ routing for legacy non-PNP OSes the same as the factory firmware would do. Change-Id: I0c7a7d584a2c47471456ab54ef6da815a2dc4e7c Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Reviewed-on: https://review.coreboot.org/18900 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/winnet/g170/mainboard.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/mainboard/winnet/g170/mainboard.c b/src/mainboard/winnet/g170/mainboard.c
new file mode 100644
index 0000000000..18226a6249
--- /dev/null
+++ b/src/mainboard/winnet/g170/mainboard.c
@@ -0,0 +1,55 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Lubomir Rintel <lkundrak@v3.sk>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <arch/acpi.h>
+
+static void mainboard_final(void *chip_info)
+{
+ /* A B C D */
+ static const unsigned char irq_map[4] = { 11, 5, 10, 0 };
+ device_t lpc_dev;
+
+ printk(BIOS_INFO, "Setting up G170 IRQ routing...\n");
+
+ lpc_dev = dev_find_device(PCI_VENDOR_ID_VIA,
+ PCI_DEVICE_ID_VIA_VT8237R_LPC, 0);
+
+ /* Disable APIC */
+ pci_write_config8(lpc_dev, 0x58, pci_read_config8(lpc_dev, 0x58) & ~0x40);
+
+ /* Share INTE-INTH with INTA-INTD */
+ pci_write_config8(lpc_dev, 0x46, 0x00);
+
+ /* Route INTA-INTD */
+ pci_write_config8(lpc_dev, 0x55, irq_map[0] << 4);
+ pci_write_config8(lpc_dev, 0x56, irq_map[1] << 4 | irq_map[2]);
+ pci_write_config8(lpc_dev, 0x57, irq_map[3]);
+
+ /* Assign IRQ numbers to known devices for non-PnP OSes */
+ pci_assign_irqs(0x00, 0x10, irq_map);
+ pci_assign_irqs(0x00, 0x11, irq_map);
+ pci_assign_irqs(0x00, 0x12, irq_map);
+ pci_assign_irqs(0x01, 0x00, irq_map);
+}
+
+struct chip_operations mainboard_ops = {
+ CHIP_NAME("WinNET G170")
+ .final = mainboard_final,
+};