/* * 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/acpi.h> #include <arch/io.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 = dev_find_slot(0, PCI_DEVFN(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 = dev_find_slot(0, PCI_DEVFN(0x1c, 3)); if (nic) { printk(BIOS_DEBUG, "DISABLE SECOND NIC!\n"); nic->enabled = 0; } } } struct chip_operations mainboard_ops = { .enable_dev = mainboard_enable, };