diff options
| author | Lubomir Rintel <lkundrak@v3.sk> | 2017-02-26 16:41:36 +0100 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-08-28 15:27:55 +0000 |
| commit | 24512dee2be71ab4e203070de48f97a1135a7da1 (patch) | |
| tree | 10cdc30220ef08a0a0f8e821ba842a8d1343ea94 /src/mainboard | |
| parent | 382783d01782f09e8394b99b87f0201ac869b8c1 (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.c | 55 |
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, +}; |