Denis Carikli (GNUtoo@no-log.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2557
-gerrit
commit 1978193216c37d3502268c692c45fc07c7831cde Author: Denis 'GNUtoo' Carikli GNUtoo@no-log.org Date: Wed Feb 27 19:45:27 2013 +0100
i945: Add support for Native VGA Init.
The code has been taken from that commit: Add more code to correclty set up native graphics.
Change-Id: Ida5485e868c022b6aacc6b7b13951e5431313867 Signed-off-by: Denis 'GNUtoo' Carikli GNUtoo@no-log.org --- src/northbridge/intel/i945/gma.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c index bf381b8..9ef863c 100644 --- a/src/northbridge/intel/i945/gma.c +++ b/src/northbridge/intel/i945/gma.c @@ -22,6 +22,9 @@ #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> +#include <device/pci_ops.h> +#include <cpu/x86/msr.h> +#include <cpu/x86/mtrr.h> #include <pc80/mc146818rtc.h> #include "i945.h"
@@ -30,6 +33,7 @@ static void gma_func0_init(struct device *dev) { u32 reg32; + u32 graphics_base, graphics_size;
/* Unconditionally reset graphics */ pci_write_config8(dev, GDRST, 1); @@ -42,7 +46,36 @@ static void gma_func0_init(struct device *dev) reg32 = pci_read_config32(dev, PCI_COMMAND); pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER);
+ /* Set up an MTRR to make anything the VBIOS does run fast. */ + /* we have agreed on MTRR #8 */ + /* the BAR for graphics space is a well known number for + * sandy and ivy. And the resource code renumbers it. + * So it's almost like having two hardcodes. + */ + graphics_base = dev->resource_list[2].base; + graphics_size = dev->resource_list[2].size; + printk(BIOS_DEBUG, "gma_func0_init: set graphics %p size 0x%x\n", + (void *)graphics_base, graphics_size); + /* the consensus is we use this mtrr */ + set_var_mtrr(8, graphics_base>>10, graphics_size>>10, MTRR_TYPE_WRCOMB, 0x24); + +#if !CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT + printk(BIOS_SPEW, "Run the VBIOS init\n"); +#endif + pci_dev_init(dev); + +#if CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT + printk(BIOS_SPEW, "NATIVE graphics, run native enable\n"); + u32 iobase, mmiobase, physbase; + iobase = dev->resource_list[1].base; + mmiobase = dev->resource_list[0].base; + physbase = pci_read_config32(dev, 0x5c) & ~0xf; + + int i915lightup(u32 physbase, u32 iobase, u32 mmiobase, u32 gfx); + i915lightup(physbase, iobase, mmiobase, graphics_base); +#endif + }
/* This doesn't reclaim stolen UMA memory, but IGD could still
-
Denis Carikli