X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=arch%2Fx86%2Fcpu%2Fivybridge%2Fgma.c;h=6cf9654e02a872d327e6c3b5f7a5a0e09dae3033;hb=782323c470d7836ff31d1cd7fa978ef161e9cf66;hp=3d7f740273fb29ff96b9751478e466e4e4dd5fff;hpb=272a1acf1ef574356e5da51f7d6b3b07ab4e9b83;p=karo-tx-uboot.git

diff --git a/arch/x86/cpu/ivybridge/gma.c b/arch/x86/cpu/ivybridge/gma.c
index 3d7f740273..6cf9654e02 100644
--- a/arch/x86/cpu/ivybridge/gma.c
+++ b/arch/x86/cpu/ivybridge/gma.c
@@ -12,9 +12,11 @@
 #include <fdtdec.h>
 #include <pci_rom.h>
 #include <asm/io.h>
+#include <asm/mtrr.h>
 #include <asm/pci.h>
 #include <asm/arch/pch.h>
 #include <asm/arch/sandybridge.h>
+#include <linux/kconfig.h>
 
 struct gt_powermeter {
 	u16 reg;
@@ -730,7 +732,11 @@ static int int15_handler(void)
 int gma_func0_init(pci_dev_t dev, struct pci_controller *hose,
 		   const void *blob, int node)
 {
+#ifdef CONFIG_VIDEO
+	ulong start;
+#endif
 	void *gtt_bar;
+	ulong base;
 	u32 reg32;
 	int ret;
 
@@ -739,14 +745,22 @@ int gma_func0_init(pci_dev_t dev, struct pci_controller *hose,
 	reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
 	pci_write_config32(dev, PCI_COMMAND, reg32);
 
+	/* Use write-combining for the graphics memory, 256MB */
+	base = pci_read_bar32(hose, dev, 2);
+	mtrr_add_request(MTRR_TYPE_WRCOMB, base, 256 << 20);
+	mtrr_commit(true);
+
 	gtt_bar = (void *)pci_read_bar32(pci_bus_to_hose(0), dev, 0);
 	debug("GT bar %p\n", gtt_bar);
 	ret = gma_pm_init_pre_vbios(gtt_bar);
 	if (ret)
 		return ret;
 
+#ifdef CONFIG_VIDEO
+	start = get_timer(0);
 	ret = pci_run_vga_bios(dev, int15_handler, false);
-
+	debug("BIOS ran in %lums\n", get_timer(start));
+#endif
 	/* Post VBIOS init */
 	ret = gma_pm_init_post_vbios(gtt_bar, blob, node);
 	if (ret)