From 7aaff9bf81b17b7920826f99a17eae7659292f5c Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Mon, 6 Jul 2015 16:31:35 +0800 Subject: x86: crownbay: Enable graphics support Enable graphics support on Intel Crown Bay board With the help of vgabios for Intel TunnelCreek IGD. Tested with an external LVDS panel connected to X4 connector and SDVO adapter connected to X9 connector on the board. Signed-off-by: Jian Luo Signed-off-by: Bin Meng Acked-by: Simon Glass --- doc/README.x86 | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'doc') diff --git a/doc/README.x86 b/doc/README.x86 index 7f3914f..646eff1 100644 --- a/doc/README.x86 +++ b/doc/README.x86 @@ -113,6 +113,10 @@ binary using any hex editor (eg: bvi). Go to the offset 0x1fcd8 of the FSP binary, change the following five bytes values from orginally E8 42 FF FF FF to B8 00 80 0B 00. +As for the video ROM, you need manually extract it from the Intel provided +BIOS for Crown Bay here [6], using the AMI MMTool [7]. Check PCI option ROM +ID 8086:4108, extract and save it as vga.bin in the board directory. + Now you can build U-Boot and obtain u-boot.rom $ make crownbay_defconfig @@ -254,7 +258,7 @@ If you want to check both consoles, use '-serial stdio'. CPU Microcode ------------- -Modern CPUs usually require a special bit stream called microcode [6] to be +Modern CPUs usually require a special bit stream called microcode [8] to be loaded on the processor after power up in order to function properly. U-Boot has already integrated these as hex dumps in the source tree. @@ -265,9 +269,9 @@ Additional application processors (AP) can be brought up by U-Boot. In order to have an SMP kernel to discover all of the available processors, U-Boot needs to prepare configuration tables which contain the multi-CPUs information before loading the OS kernel. Currently U-Boot supports generating two types of tables -for SMP, called Simple Firmware Interface (SFI) [7] and Multi-Processor (MP) [8] -tables. The writing of these two tables are controlled by two Kconfig options -GENERATE_SFI_TABLE and GENERATE_MP_TABLE. +for SMP, called Simple Firmware Interface (SFI) [9] and Multi-Processor (MP) +[10] tables. The writing of these two tables are controlled by two Kconfig +options GENERATE_SFI_TABLE and GENERATE_MP_TABLE. Driver Model ------------ @@ -372,6 +376,8 @@ References [3] http://www.coreboot.org/~stepan/pci8086,0166.rom [4] http://www.intel.com/content/www/us/en/embedded/design-tools/evaluation-platforms/atom-e660-eg20t-development-kit.html [5] http://www.intel.com/fsp -[6] http://en.wikipedia.org/wiki/Microcode -[7] http://simplefirmware.org -[8] http://www.intel.com/design/archives/processors/pro/docs/242016.htm +[6] http://www.intel.com/content/www/us/en/secure/intelligent-systems/privileged/e6xx-35-b1-cmc22211.html +[7] http://www.ami.com/products/bios-uefi-tools-and-utilities/bios-uefi-utilities/ +[8] http://en.wikipedia.org/wiki/Microcode +[9] http://simplefirmware.org +[10] http://www.intel.com/design/archives/processors/pro/docs/242016.htm -- cgit v1.1