diff options
author | Ronald G. Minnich <rminnich@gmail.com> | 2013-02-26 10:07:40 -0800 |
---|---|---|
committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-03-15 20:21:51 +0100 |
commit | 69efaa0388c2989cd224821adb07715d64623953 (patch) | |
tree | ff5648065eee9274931a27d5ab0dbc038777b900 /src/northbridge/intel | |
parent | 26855fc70b05cf0294cbe3d5f2195bfb95806780 (diff) | |
download | coreboot-69efaa0388c2989cd224821adb07715d64623953.tar.xz |
Google Link: Add remaining code to support native graphics
The Link native graphics commit 49428d84 [1]
Add support for Google's Chromebook Pixel
was missing some of the higher level bits, and hence could not be
used. This is not new code -- it has been working since last
August -- so the effort now is to get it into the tree and structure
it in a way compatible with upstream coreboot.
1. Add options to src/device/Kconfig to enable native graphics.
2. Export the MTRR function for setting variable MTRRs.
3. Clean up some of the comments and white space.
While I realize that the product name is Pixel, the mainboard in the
coreboot tree is called Link, and that name is what we will use
in our commits.
[1] http://review.coreboot.org/2482
Change-Id: Ie4db21f245cf5062fe3a8ee913d05dd79030e3e8
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2531
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/northbridge/intel')
-rw-r--r-- | src/northbridge/intel/sandybridge/gma.c | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/src/northbridge/intel/sandybridge/gma.c b/src/northbridge/intel/sandybridge/gma.c index f35299e225..4a043ebb35 100644 --- a/src/northbridge/intel/sandybridge/gma.c +++ b/src/northbridge/intel/sandybridge/gma.c @@ -23,6 +23,9 @@ #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 "chip.h" #include "sandybridge.h" @@ -619,20 +622,47 @@ static void gma_pm_init_post_vbios(struct device *dev) static void gma_func0_init(struct device *dev) { u32 reg32; + u32 graphics_base, graphics_size; /* IGD needs to be Bus Master */ reg32 = pci_read_config32(dev, PCI_COMMAND); reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; pci_write_config32(dev, PCI_COMMAND, reg32); + /* Set up an MTRR for the graphics memory BAR to vastly improve + * speed of VGA initialization (and later access). To stay out of + * the way of the MTRR init code, we are using MTRR #8 to cover + * that range. + */ + graphics_base = dev->resource_list[1].base; + graphics_size = dev->resource_list[1].size; + printk(BIOS_DEBUG, "Setting up MTRR for graphics 0x%08x (%dK)\n", + graphics_base, graphics_size / 1024); + set_var_mtrr(8, graphics_base >> 10, graphics_size >> 10, + MTRR_TYPE_WRCOMB, 0x24); + /* Init graphics power management */ gma_pm_init_pre_vbios(dev); +#if !CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT /* PCI Init, will run VBIOS */ pci_dev_init(dev); +#endif /* Post VBIOS init */ gma_pm_init_post_vbios(dev); + +#if CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT + /* This should probably run before post VBIOS init. */ + printk(BIOS_SPEW, "Initializing VGA without OPROM.\n"); + u32 iobase, mmiobase, physbase; + iobase = dev->resource_list[2].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 } static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device) @@ -660,12 +690,13 @@ static struct device_operations gma_func0_ops = { .ops_pci = &gma_pci_ops, }; -static const unsigned short gma_ids[] = { - 0x0102, 0x0106, 0x010a, 0x0112, 0x0116, 0x0122, 0x0126, 0x0156, 0x166, - 0, -}; -static const struct pci_driver gma_gt1_desktop __pci_driver = { - .ops = &gma_func0_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .devices= gma_ids, +static const unsigned short pci_device_ids[] = { 0x0102, 0x0106, 0x010a, 0x0112, + 0x0116, 0x0122, 0x0126, 0x0156, + 0x0166, + 0 }; + +static const struct pci_driver gma __pci_driver = { + .ops = &gma_func0_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = pci_device_ids, }; |