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: NJian Luo <jian.luo4@boschrexroth.de>
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Acked-by: NSimon Glass <sjg@chromium.org>

configs/crownbay_defconfig

@@ -18,5 +18,8 @@ CONFIG_CPU=y
 CONFIG_SPI_FLASH=y
 CONFIG_USE_PRIVATE_LIBGCC=y
 CONFIG_SYS_VSNPRINTF=y
+CONFIG_HAVE_VGA_BIOS=y
 CONFIG_GENERATE_MP_TABLE=y
+CONFIG_VIDEO_VESA=y
+CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
 CONFIG_DM_RTC=y

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

include/configs/crownbay.h

@@ -32,15 +32,16 @@
 #define CONFIG_PCI_IO_PHYS		CONFIG_PCI_IO_BUS
 #define CONFIG_PCI_IO_SIZE		0xe000
 
+#define CONFIG_PCI_CONFIG_HOST_BRIDGE
 #define CONFIG_SYS_EARLY_PCI_INIT
 #define CONFIG_PCI_PNP
 #define CONFIG_E1000
 
-#define CONFIG_STD_DEVICES_SETTINGS     "stdin=serial\0" \
-					"stdout=serial\0" \
-					"stderr=serial\0"
+#define CONFIG_STD_DEVICES_SETTINGS	"stdin=serial,vga,usbkbd\0" \
+					"stdout=serial,vga\0" \
+					"stderr=serial,vga\0"
 
-#define CONFIG_SCSI_DEV_LIST            \
+#define CONFIG_SCSI_DEV_LIST		\
 	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TCF_SATA}
 
 #define CONFIG_SPI_FLASH_SST
@@ -55,9 +56,8 @@
 #define CONFIG_PCH_GBE
 #define CONFIG_PHYLIB
 
-/* Video is not supported */
-#undef CONFIG_VIDEO
-#undef CONFIG_CFB_CONSOLE
+/* TunnelCreek IGD support */
+#define CONFIG_VGA_AS_SINGLE_DEVICE
 
 /* Environment configuration */
 #define CONFIG_ENV_SECT_SIZE		0x1000