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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 <console/console.h>
#if CONFIG(VGA_ROM_RUN)
#include <x86emu/x86emu.h>
#endif
#include <arch/acpi.h>
#include <arch/interrupt.h>
#include <smbios.h>
#include "ec.h"
#include <variant/onboard.h>
#include <soc/gpio.h>
#include <bootstate.h>
#include <vendorcode/google/chromeos/chromeos.h>
void mainboard_suspend_resume(void)
{
}
#if CONFIG(VGA_ROM_RUN)
static int int15_handler(void)
{
int res = 1;
printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
__func__, X86_AX, X86_BX, X86_CX, X86_DX);
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_CX = 0x0001;
res = 1;
break;
case 0x5f35:
/*
* Boot Display Device Hook:
* bit 0 = CRT
* bit 1 = TV
* bit 2 = EFP (HDMI)
* bit 3 = LFP (eDP)*
* bit 4 = CRT2
* bit 5 = TV2
* bit 6 = EFP2
* bit 7 = LFP2
*/
X86_AX = 0x005f;
X86_CX = 0x0008;
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;
res = 1;
break;
case 0x5f70:
switch ((X86_CX >> 8) & 0xff) {
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_CX >> 8) & 0xff));
break;
}
break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
break;
}
return res;
}
#endif
static void mainboard_init(struct device *dev)
{
mainboard_ec_init();
#if CONFIG(BOARD_GOOGLE_NINJA) || CONFIG(BOARD_GOOGLE_SUMO)
lan_init();
#endif
}
static int mainboard_smbios_data(struct device *dev, int *handle,
unsigned long *current)
{
int len = 0;
#ifdef BOARD_TRACKPAD_NAME
len += smbios_write_type41(
current, handle,
BOARD_TRACKPAD_NAME, /* name */
BOARD_TRACKPAD_IRQ, /* instance */
BOARD_TRACKPAD_I2C_BUS, /* segment */
BOARD_TRACKPAD_I2C_ADDR, /* bus */
0, /* device */
0, /* function */
SMBIOS_DEVICE_TYPE_OTHER); /* device type */
#endif
#ifdef BOARD_TOUCHSCREEN_NAME
len += smbios_write_type41(
current, handle,
BOARD_TOUCHSCREEN_NAME, /* name */
BOARD_TOUCHSCREEN_IRQ, /* instance */
BOARD_TOUCHSCREEN_I2C_BUS, /* segment */
BOARD_TOUCHSCREEN_I2C_ADDR, /* bus */
0, /* device */
0, /* function */
SMBIOS_DEVICE_TYPE_OTHER); /* device type */
#endif
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 = mainboard_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,
};
static void edp_vdden_cb(void *unused)
{
ncore_select_func(SOC_DDI1_VDDEN_PAD, PAD_FUNC2);
}
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, edp_vdden_cb, NULL);
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