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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <types.h>
#include <device/device.h>
#include <device/pci_ops.h>
#include <console/console.h>
#if CONFIG(VGA_ROM_RUN)
#include <x86emu/x86emu.h>
#endif
#include <acpi/acpi.h>
#include <arch/io.h>
#include <arch/interrupt.h>
#include "onboard.h"
#include "ec.h"
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/common/gpio.h>
#include <smbios.h>
#include <ec/google/chromeec/ec.h>
#include <vendorcode/google/chromeos/chromeos.h>
#if CONFIG(VGA_ROM_RUN)
static int int15_handler(void)
{
int res = 0;
printk(BIOS_DEBUG, "%s: INT15 function %04x!\n",
__func__, X86_AX);
switch (X86_AX) {
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_AX = 0x005f;
X86_CL = 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_AX = 0x005f;
X86_CX = 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 = SVDO-LVDS, LFP driven by SVDO decoder
* 03h = eDP, LFP Driven by Int-DisplayPort encoder
*/
X86_AX = 0x005f;
X86_CX = 0x0003; /* eDP */
res = 1;
break;
case 0x5f70:
switch (X86_CH) {
case 0:
/* Get Mux */
X86_AX = 0x005f;
X86_CX = 0x0000;
res = 1;
break;
case 1:
/* Set Mux */
X86_AX = 0x005f;
X86_CX = 0x0000;
res = 1;
break;
case 2:
/* Get SG/Non-SG mode */
X86_AX = 0x005f;
X86_CX = 0x0000;
res = 1;
break;
default:
/* Interrupt was not handled */
printk(BIOS_DEBUG, "Unknown INT15 5f70 function: 0x%02x\n",
X86_CH);
break;
}
break;
case 0x5fac:
res = 1;
break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
break;
}
return res;
}
#endif
static void mainboard_init(struct device *dev)
{
uint32_t board_version = 0;
/* Initialize the Embedded Controller */
link_ec_init();
google_chromeec_get_board_version(&board_version);
if (board_version == 0) {
/* If running on proto1 - enable reversion of gpio11. */
u32 gpio_inv;
u16 gpio_base = pci_read_config16
(pcidev_on_root(0x1f, 0), GPIO_BASE) &
0xfffc;
u16 gpio_inv_addr = gpio_base + GPI_INV;
gpio_inv = inl(gpio_inv_addr);
outl(gpio_inv | (1 << 11), gpio_inv_addr);
}
}
static int link_onboard_smbios_data(struct device *dev, int *handle,
unsigned long *current)
{
int len = 0;
len += smbios_write_type41(
current, handle,
BOARD_LIGHTSENSOR_NAME, /* name */
BOARD_LIGHTSENSOR_IRQ, /* instance */
0, /* segment */
BOARD_LIGHTSENSOR_I2C_ADDR, /* bus */
0, /* device */
0, /* function */
SMBIOS_DEVICE_TYPE_OTHER); /* device type */
len += smbios_write_type41(
current, handle,
BOARD_TRACKPAD_NAME, /* name */
BOARD_TRACKPAD_IRQ, /* instance */
0, /* segment */
BOARD_TRACKPAD_I2C_ADDR, /* bus */
0, /* device */
0, /* function */
SMBIOS_DEVICE_TYPE_OTHER); /* device type */
len += smbios_write_type41(
current, handle,
BOARD_TOUCHSCREEN_NAME, /* name */
BOARD_TOUCHSCREEN_IRQ, /* instance */
0, /* segment */
BOARD_TOUCHSCREEN_I2C_ADDR, /* bus */
0, /* device */
0, /* function */
SMBIOS_DEVICE_TYPE_OTHER); /* device type */
return len;
}
// mainboard_enable is executed as first thing after
// enumerate_buses().
static void mainboard_enable(struct device *dev)
{
dev->ops->init = mainboard_init;
dev->ops->get_smbios_data = link_onboard_smbios_data;
dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
#if CONFIG(VGA_ROM_RUN)
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
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