From b0c4cbb7aff5656a35babe7020c71b45fe3235a6 Mon Sep 17 00:00:00 2001 From: Abhay Kumar Date: Thu, 12 Oct 2017 11:33:01 -0700 Subject: soc/intel/cannonlake: Add IGD Support and pre-OS display code 1. Add IGD opregion initialization. 2. Use frame buffer return by FSP for display. 3. Derived from "src/soc/intel/apollolake/graphics.c" with changes needed for CNL. TEST=Pre-OS screen comes up and VBT is getting passed to kernel. Change-Id: I19c0cf6cfc03fc9df9e98c75af4e486cb5a19e32 Signed-off-by: Abhay Kumar Reviewed-on: https://review.coreboot.org/21999 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Arthur Heymans --- src/soc/intel/cannonlake/graphics.c | 79 +++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 src/soc/intel/cannonlake/graphics.c (limited to 'src/soc/intel/cannonlake/graphics.c') diff --git a/src/soc/intel/cannonlake/graphics.c b/src/soc/intel/cannonlake/graphics.c new file mode 100644 index 0000000000..a177127da4 --- /dev/null +++ b/src/soc/intel/cannonlake/graphics.c @@ -0,0 +1,79 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016-2017 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 +#include +#include +#include +#include +#include +#include +#include +#include + +uintptr_t fsp_soc_get_igd_bar(void) +{ + device_t dev = SA_DEV_IGD; + + /* Check if IGD PCI device is disabled */ + if (!dev->enabled) + return 0; + + return find_resource(dev, PCI_BASE_ADDRESS_2)->base; +} + +static unsigned long igd_write_opregion(device_t dev, unsigned long current, + struct acpi_rsdp *rsdp) +{ + igd_opregion_t *opregion; + + printk(BIOS_DEBUG, "ACPI: * IGD OpRegion\n"); + opregion = (igd_opregion_t *)current; + + if (intel_gma_init_igd_opregion(opregion) != CB_SUCCESS) + return current; + + current += sizeof(igd_opregion_t); + + return acpi_align_current(current); +} + +static const struct device_operations igd_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_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_INTEL_CNL_GT2_ULX_1, + PCI_DEVICE_ID_INTEL_CNL_GT2_ULX_2, + PCI_DEVICE_ID_INTEL_CNL_GT2_ULX_3, + PCI_DEVICE_ID_INTEL_CNL_GT2_ULX_4, + PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_1, + PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_2, + PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_3, + PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_4, + 0, +}; + +static const struct pci_driver integrated_graphics_driver __pci_driver = { + .ops = &igd_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = pci_device_ids, +}; -- cgit v1.2.3