| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015-2016 Intel Corp. |
| * (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.) |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 <arch/acpi.h> |
| #include <arch/acpigen.h> |
| #include <console/console.h> |
| #include <fsp/util.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <soc/pci_ids.h> |
| #include <soc/intel/common/opregion.h> |
| |
| static uintptr_t framebuffer_bar = (uintptr_t)NULL; |
| |
| void lb_framebuffer(struct lb_header *header) |
| { |
| enum cb_err ret; |
| struct lb_framebuffer *framebuffer; |
| |
| framebuffer = (void *)lb_new_record(header); |
| ret = fsp_fill_lb_framebuffer(framebuffer); |
| if (ret != CB_SUCCESS) { |
| printk(BIOS_ALERT, "FSP did not return a valid framebuffer\n"); |
| return; |
| } |
| |
| if (!framebuffer_bar) { |
| printk(BIOS_ALERT, "Framebuffer BAR invalid (00:02.0 BAR2)\n"); |
| return; |
| } |
| |
| /* Resource allocator can move the BAR around after FSP configures it */ |
| framebuffer->physical_address = framebuffer_bar; |
| printk(BIOS_DEBUG, "Graphics framebuffer located at 0x%llx\n", |
| framebuffer->physical_address); |
| } |
| |
| static void igd_set_resources(struct device *dev) |
| { |
| framebuffer_bar = find_resource(dev, PCI_BASE_ADDRESS_2)->base; |
| pci_dev_set_resources(dev); |
| } |
| |
| static unsigned long igd_write_opregion(device_t dev, unsigned long current, |
| struct acpi_rsdp *rsdp) |
| { |
| igd_opregion_t *opregion; |
| uint16_t reg16; |
| |
| printk(BIOS_DEBUG, "ACPI: * IGD OpRegion\n"); |
| opregion = (igd_opregion_t *)current; |
| |
| if (!init_igd_opregion(opregion)) |
| return current; |
| |
| current += sizeof(igd_opregion_t); |
| |
| /* TODO Initialize Mailbox 3 */ |
| opregion->mailbox3.bclp = IGD_BACKLIGHT_BRIGHTNESS; |
| opregion->mailbox3.pfit = IGD_FIELD_VALID | IGD_PFIT_STRETCH; |
| opregion->mailbox3.pcft = 0; /* should be (IMON << 1) & 0x3e */ |
| opregion->mailbox3.cblv = IGD_FIELD_VALID | IGD_INITIAL_BRIGHTNESS; |
| opregion->mailbox3.bclm[0] = IGD_WORD_FIELD_VALID + 0x0000; |
| opregion->mailbox3.bclm[1] = IGD_WORD_FIELD_VALID + 0x0a19; |
| opregion->mailbox3.bclm[2] = IGD_WORD_FIELD_VALID + 0x1433; |
| opregion->mailbox3.bclm[3] = IGD_WORD_FIELD_VALID + 0x1e4c; |
| opregion->mailbox3.bclm[4] = IGD_WORD_FIELD_VALID + 0x2866; |
| opregion->mailbox3.bclm[5] = IGD_WORD_FIELD_VALID + 0x327f; |
| opregion->mailbox3.bclm[6] = IGD_WORD_FIELD_VALID + 0x3c99; |
| opregion->mailbox3.bclm[7] = IGD_WORD_FIELD_VALID + 0x46b2; |
| opregion->mailbox3.bclm[8] = IGD_WORD_FIELD_VALID + 0x50cc; |
| opregion->mailbox3.bclm[9] = IGD_WORD_FIELD_VALID + 0x5ae5; |
| opregion->mailbox3.bclm[10] = IGD_WORD_FIELD_VALID + 0x64ff; |
| |
| /* |
| * TODO This needs to happen in S3 resume, too. |
| * Maybe it should move to the finalize handler. |
| */ |
| |
| pci_write_config32(dev, ASLS, (uintptr_t)opregion); |
| reg16 = pci_read_config16(dev, SWSCI); |
| reg16 &= ~(1 << 0); |
| reg16 |= (1 << 15); |
| pci_write_config16(dev, SWSCI, reg16); |
| |
| return acpi_align_current(current); |
| } |
| |
| static const struct device_operations igd_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = igd_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = pci_dev_init, |
| .write_acpi_tables = igd_write_opregion, |
| .enable = DEVICE_NOOP |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| PCI_DEVICE_ID_APOLLOLAKE_IGD_HD_505, |
| PCI_DEVICE_ID_APOLLOLAKE_IGD_HD_500, |
| 0, |
| }; |
| |
| static const struct pci_driver integrated_graphics_driver __pci_driver = { |
| .ops = &igd_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices= pci_device_ids, |
| }; |