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/* SPDX-License-Identifier: GPL-2.0-only */
#include <types.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <console/console.h>
#if CONFIG(VGA_ROM_RUN)
#include <x86emu/x86emu.h>
#endif
#include <option.h>
#include <arch/interrupt.h>
#include <southbridge/intel/bd82x6x/pch.h>
#if 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 CONFIG(PCI_OPTION_ROM_RUN_YABEL) || \
CONFIG(PCI_OPTION_ROM_RUN_REALMODE)
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
unsigned int disable = get_uint_option("ethernet1", 0);
if (disable) {
struct device *nic = pcidev_on_root(0x1c, 2);
if (nic) {
printk(BIOS_DEBUG, "DISABLE FIRST NIC!\n");
nic->enabled = 0;
}
}
disable = get_uint_option("ethernet2", 0);
if (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,
};
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