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 <alexandrux.gagniuc@intel.com>
Reviewed-on: https://review.coreboot.org/14764
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/apollolake/graphics.c b/src/soc/intel/apollolake/graphics.c
new file mode 100644
index 0000000..2384062
--- /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 <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 <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>
+
+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,
+};