From c364019486bbdf960d1b217bb87f8ccbb59bc591 Mon Sep 17 00:00:00 2001 From: Alexandru Gagniuc Date: Tue, 15 Dec 2015 16:06:15 -0800 Subject: soc/intel/apollolake: Write LB_FRAMEBUFFER table when appropriate FSP does not itself write the LB_FRAMEBUFFER entry, so that needs to be done in platform code. Change-Id: Ia8311da9b9a603ea9b333ea873fc26d11e182332 Signed-off-by: Alexandru Gagniuc Reviewed-on: https://review.coreboot.org/14764 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/intel/apollolake/graphics.c | 68 +++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 src/soc/intel/apollolake/graphics.c (limited to 'src/soc/intel/apollolake/graphics.c') diff --git a/src/soc/intel/apollolake/graphics.c b/src/soc/intel/apollolake/graphics.c new file mode 100644 index 0000000000..23840625ea --- /dev/null +++ b/src/soc/intel/apollolake/graphics.c @@ -0,0 +1,68 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015-2016 Intel Corp. + * (Written by Alexandru Gagniuc 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 +#include +#include +#include +#include +#include + +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 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, + .enable = DEVICE_NOOP +}; + +static const struct pci_driver integrated_graphics_driver __pci_driver = { + .ops = &igd_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_APOLLOLAKE_IGD, +}; -- cgit v1.2.3