From 1f124eba11cb1619e6d575770756230484e47bf7 Mon Sep 17 00:00:00 2001 From: Bin Meng <bmeng.cn@gmail.com> Date: Thu, 1 Oct 2015 00:36:04 -0700 Subject: 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> --- arch/x86/include/asm/arch-queensbay/tnc.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/x86/include') diff --git a/arch/x86/include/asm/arch-queensbay/tnc.h b/arch/x86/include/asm/arch-queensbay/tnc.h index ad9a6c4892..23653949de 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 -- cgit