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| author | Bin Meng <bmeng.cn@gmail.com> | 2015-10-01 00:36:04 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-10-21 07:46:25 -0600 |
| commit | 1f124eba11cb1619e6d575770756230484e47bf7 (patch) | |
| tree | 17162d5ac8901917b505736b240ce8bf907359d1 /arch/x86/include | |
| parent | 5bf935925ba48711b1bf3e17338b6f2faf74f39d (diff) | |
| download | u-boot-imx-1f124eba11cb1619e6d575770756230484e47bf7.zip u-boot-imx-1f124eba11cb1619e6d575770756230484e47bf7.tar.gz u-boot-imx-1f124eba11cb1619e6d575770756230484e47bf7.tar.bz2 | |
x86: Allow disabling IGD on Intel Queensbay
Add a Kconfig option to disable the Integrated Graphics Device (IGD)
so that it does not show in the PCI configuration space as a VGA
disaplay controller. This gives a chance for U-Boot to run PCI/PCIe
based graphics card's VGA BIOS and use that for the graphics console.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/arch-queensbay/tnc.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/arch-queensbay/tnc.h b/arch/x86/include/asm/arch-queensbay/tnc.h index ad9a6c4..2365394 100644 --- a/arch/x86/include/asm/arch-queensbay/tnc.h +++ b/arch/x86/include/asm/arch-queensbay/tnc.h @@ -7,6 +7,11 @@ #ifndef _X86_ARCH_TNC_H_ #define _X86_ARCH_TNC_H_ +/* IGD Control Register */ +#define IGD_GC 0x50 +#define VGA_DISABLE 0x00020000 +#define GMS_MASK 0x00700000 + /* Memory BAR Enable */ #define MEM_BAR_EN 0x00000001 |