| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 coresystems GmbH |
| * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. |
| * Copyright (C) 2013 secunet Security Networks AG |
| * |
| * 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; version 2 of the License. |
| * |
| * 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 <types.h> |
| #include <string.h> |
| #include <device/device.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| #include <console/console.h> |
| #if IS_ENABLED(CONFIG_VGA_ROM_RUN) |
| #include <x86emu/x86emu.h> |
| #endif |
| #include <pc80/mc146818rtc.h> |
| #include <arch/interrupt.h> |
| #include <boot/coreboot_tables.h> |
| #include <southbridge/intel/bd82x6x/pch.h> |
| |
| #if IS_ENABLED(CONFIG_VGA_ROM_RUN) |
| static int int15_handler(void) |
| { |
| int res = 0; |
| |
| printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n", |
| __func__, X86_AX, X86_BX, X86_CX, X86_DX); |
| |
| switch (X86_EAX & 0xffff) { |
| case 0x5f34: |
| /* |
| * Set Panel Fitting Hook: |
| * bit 2 = Graphics Stretching |
| * bit 1 = Text Stretching |
| * bit 0 = Centering (do not set with bit1 or bit2) |
| * 0 = video bios default |
| */ |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x005f; |
| X86_ECX &= 0xffffff00; |
| X86_ECX |= 0x00; /* Use video bios default */ |
| res = 1; |
| break; |
| case 0x5f35: |
| /* |
| * Boot Display Device Hook: |
| * bit 0 = CRT |
| * bit 1 = TV (eDP) |
| * bit 2 = EFP |
| * bit 3 = LFP |
| * bit 4 = CRT2 |
| * bit 5 = TV2 (eDP) |
| * bit 6 = EFP2 |
| * bit 7 = LFP2 |
| */ |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x005f; |
| X86_ECX &= 0xffff0000; |
| X86_ECX |= 0x0000; /* Use video bios default */ |
| res = 1; |
| break; |
| case 0x5f51: |
| /* |
| * Hook to select active LFP configuration: |
| * 00h = No LVDS, VBIOS does not enable LVDS |
| * 01h = Int-LVDS, LFP driven by integrated LVDS decoder |
| * 02h = SDVO-LVDS, LFP driven by SDVO decoder |
| * 03h = eDP, LFP Driven by Int-DisplayPort encoder |
| */ |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x005f; |
| X86_ECX &= 0xffff0000; |
| X86_ECX |= 0x0000; /* TODO: Make this configurable in NVRAM? */ |
| res = 1; |
| break; |
| case 0x5f40: |
| /* |
| * Boot Panel Type Hook: |
| * BL(in): 00h = LFP, 01h = LFP2 |
| * CL(out): panel type id in table: 1..16 |
| */ |
| if (0 == (X86_EBX & 0xff)) { |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x015f; |
| res = 1; |
| } else if (1 == (X86_EBX & 0xff)) { |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x015f; |
| res = 1; |
| } else { |
| printk(BIOS_DEBUG, |
| "Unknown panel index %u " |
| "in INT15 function %04x!\n", |
| X86_EBX & 0xff, X86_EAX & 0xffff); |
| } |
| break; |
| case 0x5f52: |
| /* |
| * Panel Color Depth: |
| * 00h = 18 bit |
| * 01h = 24 bit |
| */ |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x005f; |
| X86_ECX &= 0xffff0000; |
| X86_ECX |= 0x0001; |
| res = 1; |
| break; |
| case 0x5f14: |
| if ((X86_EBX & 0xffff) == 0x78f) { |
| /* |
| * Get Miscellaneous Status Hook: |
| * bit 2: AC power active? |
| * bit 1: lid closed? |
| * bit 0: docked? |
| */ |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x015f; |
| res = 1; |
| } else { |
| printk(BIOS_DEBUG, |
| "Unknown BX 0x%04x in INT15 function %04x!\n", |
| X86_EBX & 0xffff, X86_EAX & 0xffff); |
| } |
| break; |
| case 0x5f49: |
| /* |
| * Get Inverter Type and Polarity: |
| * EBX: backlight control brightness: 0..255 |
| * ECX: |
| * 0 = Enable PWM inverted, 2 = Enable PWM |
| * 1 = Enable I2C inverted, 3 = Enable I2C |
| */ |
| X86_EAX &= 0xffff0000; |
| X86_EAX |= 0x015f; |
| res = 1; |
| break; |
| default: |
| printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", |
| X86_EAX & 0xffff); |
| break; |
| } |
| return res; |
| } |
| #endif |
| |
| |
| |
| /* mainboard_enable is executed as first thing after */ |
| /* enumerate_buses(). */ |
| |
| static void mainboard_enable(struct device *dev) |
| { |
| #if IS_ENABLED(CONFIG_PCI_OPTION_ROM_RUN_YABEL) || \ |
| IS_ENABLED(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) |
| /* Install custom int15 handler for VGA OPROM */ |
| mainboard_interrupt_handlers(0x15, &int15_handler); |
| #endif |
| |
| unsigned disable = 0; |
| if ((get_option(&disable, "ethernet1") == CB_SUCCESS) && disable) { |
| struct device *nic = pcidev_on_root(0x1c, 2); |
| if (nic) { |
| printk(BIOS_DEBUG, "DISABLE FIRST NIC!\n"); |
| nic->enabled = 0; |
| } |
| } |
| disable = 0; |
| if ((get_option(&disable, "ethernet2") == CB_SUCCESS) && disable) { |
| struct device *nic = pcidev_on_root(0x1c, 3); |
| if (nic) { |
| printk(BIOS_DEBUG, "DISABLE SECOND NIC!\n"); |
| nic->enabled = 0; |
| } |
| } |
| } |
| |
| struct chip_operations mainboard_ops = { |
| .enable_dev = mainboard_enable, |
| }; |