/* SPDX-License-Identifier: GPL-2.0-only */ #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 <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> #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; #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, };