README

		which adds regex support to some commands, as for
		example "env grep" and "setexpr".

- Device tree:
		CONFIG_OF_CONTROL
		If this variable is defined, U-Boot will use a device tree
		to configure its devices, instead of relying on statically
		compiled #defines in the board file. This option is
		experimental and only available on a few boards. The device
		tree is available in the global data as gd->fdt_blob.

		U-Boot needs to get its device tree from somewhere. This can
		be done using one of the two options below:

		CONFIG_OF_EMBED
		If this variable is defined, U-Boot will embed a device tree
		binary in its image. This device tree file should be in the
		board directory and called <soc>-<board>.dts. The binary file
		is then picked up in board_init_f() and made available through
		the global data structure as gd->blob.

		CONFIG_OF_SEPARATE
		If this variable is defined, U-Boot will build a device tree
		binary. It will be called u-boot.dtb. Architecture-specific
		code will locate it at run-time. Generally this works by:

			cat u-boot.bin u-boot.dtb >image.bin

		and in fact, U-Boot does this for you, creating a file called
		u-boot-dtb.bin which is useful in the common case. You can
		still use the individual files if you need something more
		exotic.

- Watchdog:
		CONFIG_WATCHDOG
		If this variable is defined, it enables watchdog
		support for the SoC. There must be support in the SoC
		specific code for a watchdog. For the 8xx and 8260
		CPUs, the SIU Watchdog feature is enabled in the SYPCR
		register.  When supported for a specific SoC is
		available, then no further board specific code should
		be needed to use it.

		CONFIG_HW_WATCHDOG
		When using a watchdog circuitry external to the used
		SoC, then define this variable and provide board
		specific code for the "hw_watchdog_reset" function.

		CONFIG_AT91_HW_WDT_TIMEOUT
		specify the timeout in seconds. default 2 seconds.

- U-Boot Version:
		CONFIG_VERSION_VARIABLE
		If this variable is defined, an environment variable
		named "ver" is created by U-Boot showing the U-Boot
		version as printed by the "version" command.
		Any change to this variable will be reverted at the
		next reset.

- Real-Time Clock:

		When CONFIG_CMD_DATE is selected, the type of the RTC
		has to be selected, too. Define exactly one of the
		following options:

		CONFIG_RTC_MPC8xx	- use internal RTC of MPC8xx
		CONFIG_RTC_PCF8563	- use Philips PCF8563 RTC
		CONFIG_RTC_MC13XXX	- use MC13783 or MC13892 RTC
		CONFIG_RTC_MC146818	- use MC146818 RTC
		CONFIG_RTC_DS1307	- use Maxim, Inc. DS1307 RTC
		CONFIG_RTC_DS1337	- use Maxim, Inc. DS1337 RTC
		CONFIG_RTC_DS1338	- use Maxim, Inc. DS1338 RTC
		CONFIG_RTC_DS1339	- use Maxim, Inc. DS1339 RTC
		CONFIG_RTC_DS164x	- use Dallas DS164x RTC
		CONFIG_RTC_ISL1208	- use Intersil ISL1208 RTC
		CONFIG_RTC_MAX6900	- use Maxim, Inc. MAX6900 RTC
		CONFIG_SYS_RTC_DS1337_NOOSC	- Turn off the OSC output for DS1337
		CONFIG_SYS_RV3029_TCR	- enable trickle charger on
					  RV3029 RTC.

		Note that if the RTC uses I2C, then the I2C interface
		must also be configured. See I2C Support, below.

- GPIO Support:
		CONFIG_PCA953X		- use NXP's PCA953X series I2C GPIO

		The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of
		chip-ngpio pairs that tell the PCA953X driver the number of
		pins supported by a particular chip.

		Note that if the GPIO device uses I2C, then the I2C interface
		must also be configured. See I2C Support, below.

- I/O tracing:
		When CONFIG_IO_TRACE is selected, U-Boot intercepts all I/O
		accesses and can checksum them or write a list of them out
		to memory. See the 'iotrace' command for details. This is
		useful for testing device drivers since it can confirm that
		the driver behaves the same way before and after a code
		change. Currently this is supported on sandbox and arm. To
		add support for your architecture, add '#include <iotrace.h>'
		to the bottom of arch/<arch>/include/asm/io.h and test.

		Example output from the 'iotrace stats' command is below.
		Note that if the trace buffer is exhausted, the checksum will
		still continue to operate.

			iotrace is enabled
			Start:  10000000	(buffer start address)
			Size:   00010000	(buffer size)
			Offset: 00000120	(current buffer offset)
			Output: 10000120	(start + offset)
			Count:  00000018	(number of trace records)
			CRC32:  9526fb66	(CRC32 of all trace records)

- Timestamp Support:

		When CONFIG_TIMESTAMP is selected, the timestamp
		(date and time) of an image is printed by image
		commands like bootm or iminfo. This option is
		automatically enabled when you select CONFIG_CMD_DATE .

- Partition Labels (disklabels) Supported:
		Zero or more of the following:
		CONFIG_MAC_PARTITION   Apple's MacOS partition table.
		CONFIG_DOS_PARTITION   MS Dos partition table, traditional on the
				       Intel architecture, USB sticks, etc.
		CONFIG_ISO_PARTITION   ISO partition table, used on CDROM etc.
		CONFIG_EFI_PARTITION   GPT partition table, common when EFI is the
				       bootloader.  Note 2TB partition limit; see
				       disk/part_efi.c
		CONFIG_MTD_PARTITIONS  Memory Technology Device partition table.

		If IDE or SCSI support is enabled (CONFIG_CMD_IDE or
		CONFIG_SCSI) you must configure support for at
		least one non-MTD partition type as well.

- IDE Reset method:
		CONFIG_IDE_RESET_ROUTINE - this is defined in several
		board configurations files but used nowhere!

		CONFIG_IDE_RESET - is this is defined, IDE Reset will
		be performed by calling the function
			ide_set_reset(int reset)
		which has to be defined in a board specific file

- ATAPI Support:
		CONFIG_ATAPI

		Set this to enable ATAPI support.

- LBA48 Support
		CONFIG_LBA48

		Set this to enable support for disks larger than 137GB
		Also look at CONFIG_SYS_64BIT_LBA.
		Whithout these , LBA48 support uses 32bit variables and will 'only'
		support disks up to 2.1TB.

		CONFIG_SYS_64BIT_LBA:
			When enabled, makes the IDE subsystem use 64bit sector addresses.
			Default is 32bit.

- SCSI Support:
		At the moment only there is only support for the
		SYM53C8XX SCSI controller; define
		CONFIG_SCSI_SYM53C8XX to enable it.

		CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and
		CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID *
		CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the
		maximum numbers of LUNs, SCSI ID's and target
		devices.
		CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz)

		The environment variable 'scsidevs' is set to the number of
		SCSI devices found during the last scan.

- NETWORK Support (PCI):
		CONFIG_E1000
		Support for Intel 8254x/8257x gigabit chips.

		CONFIG_E1000_SPI
		Utility code for direct access to the SPI bus on Intel 8257x.
		This does not do anything useful unless you set at least one
		of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC.

		CONFIG_E1000_SPI_GENERIC
		Allow generic access to the SPI bus on the Intel 8257x, for
		example with the "sspi" command.

		CONFIG_CMD_E1000
		Management command for E1000 devices.  When used on devices
		with SPI support you can reprogram the EEPROM from U-Boot.

		CONFIG_EEPRO100
		Support for Intel 82557/82559/82559ER chips.
		Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM
		write routine for first time initialisation.

		CONFIG_TULIP
		Support for Digital 2114x chips.
		Optional CONFIG_TULIP_SELECT_MEDIA for board specific
		modem chip initialisation (KS8761/QS6611).

		CONFIG_NATSEMI
		Support for National dp83815 chips.

		CONFIG_NS8382X
		Support for National dp8382[01] gigabit chips.

- NETWORK Support (other):

		CONFIG_DRIVER_AT91EMAC
		Support for AT91RM9200 EMAC.

			CONFIG_RMII
			Define this to use reduced MII inteface

			CONFIG_DRIVER_AT91EMAC_QUIET
			If this defined, the driver is quiet.
			The driver doen't show link status messages.

		CONFIG_CALXEDA_XGMAC
		Support for the Calxeda XGMAC device

		CONFIG_LAN91C96
		Support for SMSC's LAN91C96 chips.

			CONFIG_LAN91C96_USE_32_BIT
			Define this to enable 32 bit addressing

		CONFIG_SMC91111
		Support for SMSC's LAN91C111 chip

			CONFIG_SMC91111_BASE
			Define this to hold the physical address
			of the device (I/O space)

			CONFIG_SMC_USE_32_BIT
			Define this if data bus is 32 bits

			CONFIG_SMC_USE_IOFUNCS
			Define this to use i/o functions instead of macros
			(some hardware wont work with macros)

		CONFIG_DRIVER_TI_EMAC
		Support for davinci emac

			CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT
			Define this if you have more then 3 PHYs.

		CONFIG_FTGMAC100
		Support for Faraday's FTGMAC100 Gigabit SoC Ethernet

			CONFIG_FTGMAC100_EGIGA
			Define this to use GE link update with gigabit PHY.
			Define this if FTGMAC100 is connected to gigabit PHY.
			If your system has 10/100 PHY only, it might not occur
			wrong behavior. Because PHY usually return timeout or
			useless data when polling gigabit status and gigabit
			control registers. This behavior won't affect the
			correctnessof 10/100 link speed update.

		CONFIG_SMC911X
		Support for SMSC's LAN911x and LAN921x chips

			CONFIG_SMC911X_BASE
			Define this to hold the physical address
			of the device (I/O space)

			CONFIG_SMC911X_32_BIT
			Define this if data bus is 32 bits

			CONFIG_SMC911X_16_BIT
			Define this if data bus is 16 bits. If your processor
			automatically converts one 32 bit word to two 16 bit
			words you may also try CONFIG_SMC911X_32_BIT.

		CONFIG_SH_ETHER
		Support for Renesas on-chip Ethernet controller

			CONFIG_SH_ETHER_USE_PORT
			Define the number of ports to be used

			CONFIG_SH_ETHER_PHY_ADDR
			Define the ETH PHY's address

			CONFIG_SH_ETHER_CACHE_WRITEBACK
			If this option is set, the driver enables cache flush.

- PWM Support:
		CONFIG_PWM_IMX
		Support for PWM module on the imx6.

- TPM Support:
		CONFIG_TPM
		Support TPM devices.

		CONFIG_TPM_TIS_INFINEON
		Support for Infineon i2c bus TPM devices. Only one device
		per system is supported at this time.

			CONFIG_TPM_TIS_I2C_BURST_LIMITATION
			Define the burst count bytes upper limit

		CONFIG_TPM_ST33ZP24
		Support for STMicroelectronics TPM devices. Requires DM_TPM support.

			CONFIG_TPM_ST33ZP24_I2C
			Support for STMicroelectronics ST33ZP24 I2C devices.
			Requires TPM_ST33ZP24 and I2C.

			CONFIG_TPM_ST33ZP24_SPI
			Support for STMicroelectronics ST33ZP24 SPI devices.
			Requires TPM_ST33ZP24 and SPI.

		CONFIG_TPM_ATMEL_TWI
		Support for Atmel TWI TPM device. Requires I2C support.

		CONFIG_TPM_TIS_LPC
		Support for generic parallel port TPM devices. Only one device
		per system is supported at this time.

			CONFIG_TPM_TIS_BASE_ADDRESS
			Base address where the generic TPM device is mapped
			to. Contemporary x86 systems usually map it at
			0xfed40000.

		CONFIG_CMD_TPM
		Add tpm monitor functions.
		Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also
		provides monitor access to authorized functions.

		CONFIG_TPM
		Define this to enable the TPM support library which provides
		functional interfaces to some TPM commands.
		Requires support for a TPM device.

		CONFIG_TPM_AUTH_SESSIONS
		Define this to enable authorized functions in the TPM library.
		Requires CONFIG_TPM and CONFIG_SHA1.

- USB Support:
		At the moment only the UHCI host controller is
		supported (PIP405, MIP405, MPC5200); define
		CONFIG_USB_UHCI to enable it.
		define CONFIG_USB_KEYBOARD to enable the USB Keyboard
		and define CONFIG_USB_STORAGE to enable the USB
		storage devices.
		Note:
		Supported are USB Keyboards and USB Floppy drives
		(TEAC FD-05PUB).
		MPC5200 USB requires additional defines:
			CONFIG_USB_CLOCK
				for 528 MHz Clock: 0x0001bbbb
			CONFIG_PSC3_USB
				for USB on PSC3
			CONFIG_USB_CONFIG
				for differential drivers: 0x00001000
				for single ended drivers: 0x00005000
				for differential drivers on PSC3: 0x00000100
				for single ended drivers on PSC3: 0x00004100
			CONFIG_SYS_USB_EVENT_POLL
				May be defined to allow interrupt polling
				instead of using asynchronous interrupts

		CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the
		txfilltuning field in the EHCI controller on reset.

		CONFIG_USB_DWC2_REG_ADDR the physical CPU address of the DWC2
		HW module registers.

- USB Device:
		Define the below if you wish to use the USB console.
		Once firmware is rebuilt from a serial console issue the
		command "setenv stdin usbtty; setenv stdout usbtty" and
		attach your USB cable. The Unix command "dmesg" should print
		it has found a new device. The environment variable usbtty
		can be set to gserial or cdc_acm to enable your device to
		appear to a USB host as a Linux gserial device or a
		Common Device Class Abstract Control Model serial device.
		If you select usbtty = gserial you should be able to enumerate
		a Linux host by
		# modprobe usbserial vendor=0xVendorID product=0xProductID
		else if using cdc_acm, simply setting the environment
		variable usbtty to be cdc_acm should suffice. The following
		might be defined in YourBoardName.h

			CONFIG_USB_DEVICE
			Define this to build a UDC device

			CONFIG_USB_TTY
			Define this to have a tty type of device available to
			talk to the UDC device

			CONFIG_USBD_HS
			Define this to enable the high speed support for usb
			device and usbtty. If this feature is enabled, a routine
			int is_usbd_high_speed(void)
			also needs to be defined by the driver to dynamically poll
			whether the enumeration has succeded at high speed or full
			speed.

			CONFIG_SYS_CONSOLE_IS_IN_ENV
			Define this if you want stdin, stdout &/or stderr to
			be set to usbtty.

			mpc8xx:
				CONFIG_SYS_USB_EXTC_CLK 0xBLAH
				Derive USB clock from external clock "blah"
				- CONFIG_SYS_USB_EXTC_CLK 0x02

		If you have a USB-IF assigned VendorID then you may wish to
		define your own vendor specific values either in BoardName.h
		or directly in usbd_vendor_info.h. If you don't define
		CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME,
		CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot
		should pretend to be a Linux device to it's target host.

			CONFIG_USBD_MANUFACTURER
			Define this string as the name of your company for
			- CONFIG_USBD_MANUFACTURER "my company"

			CONFIG_USBD_PRODUCT_NAME
			Define this string as the name of your product
			- CONFIG_USBD_PRODUCT_NAME "acme usb device"

			CONFIG_USBD_VENDORID
			Define this as your assigned Vendor ID from the USB
			Implementors Forum. This *must* be a genuine Vendor ID
			to avoid polluting the USB namespace.
			- CONFIG_USBD_VENDORID 0xFFFF

			CONFIG_USBD_PRODUCTID
			Define this as the unique Product ID
			for your device
			- CONFIG_USBD_PRODUCTID 0xFFFF

- ULPI Layer Support:
		The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via
		the generic ULPI layer. The generic layer accesses the ULPI PHY
		via the platform viewport, so you need both the genric layer and
		the viewport enabled. Currently only Chipidea/ARC based
		viewport is supported.
		To enable the ULPI layer support, define CONFIG_USB_ULPI and
		CONFIG_USB_ULPI_VIEWPORT in your board configuration file.
		If your ULPI phy needs a different reference clock than the
		standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to
		the appropriate value in Hz.

- MMC Support:
		The MMC controller on the Intel PXA is supported. To
		enable this define CONFIG_MMC. The MMC can be
		accessed from the boot prompt by mapping the device
		to physical memory similar to flash. Command line is
		enabled with CONFIG_CMD_MMC. The MMC driver also works with
		the FAT fs. This is enabled with CONFIG_CMD_FAT.

		CONFIG_SH_MMCIF
		Support for Renesas on-chip MMCIF controller

			CONFIG_SH_MMCIF_ADDR
			Define the base address of MMCIF registers

			CONFIG_SH_MMCIF_CLK
			Define the clock frequency for MMCIF

		CONFIG_GENERIC_MMC
		Enable the generic MMC driver

		CONFIG_SUPPORT_EMMC_BOOT
		Enable some additional features of the eMMC boot partitions.

		CONFIG_SUPPORT_EMMC_RPMB
		Enable the commands for reading, writing and programming the
		key for the Replay Protection Memory Block partition in eMMC.

- USB Device Firmware Update (DFU) class support:
		CONFIG_USB_FUNCTION_DFU
		This enables the USB portion of the DFU USB class

		CONFIG_CMD_DFU
		This enables the command "dfu" which is used to have
		U-Boot create a DFU class device via USB.  This command
		requires that the "dfu_alt_info" environment variable be
		set and define the alt settings to expose to the host.

		CONFIG_DFU_MMC
		This enables support for exposing (e)MMC devices via DFU.

		CONFIG_DFU_NAND
		This enables support for exposing NAND devices via DFU.

		CONFIG_DFU_RAM
		This enables support for exposing RAM via DFU.
		Note: DFU spec refer to non-volatile memory usage, but
		allow usages beyond the scope of spec - here RAM usage,
		one that would help mostly the developer.

		CONFIG_SYS_DFU_DATA_BUF_SIZE
		Dfu transfer uses a buffer before writing data to the
		raw storage device. Make the size (in bytes) of this buffer
		configurable. The size of this buffer is also configurable
		through the "dfu_bufsiz" environment variable.

		CONFIG_SYS_DFU_MAX_FILE_SIZE
		When updating files rather than the raw storage device,
		we use a static buffer to copy the file into and then write
		the buffer once we've been given the whole file.  Define
		this to the maximum filesize (in bytes) for the buffer.
		Default is 4 MiB if undefined.

		DFU_DEFAULT_POLL_TIMEOUT
		Poll timeout [ms], is the timeout a device can send to the
		host. The host must wait for this timeout before sending
		a subsequent DFU_GET_STATUS request to the device.

		DFU_MANIFEST_POLL_TIMEOUT
		Poll timeout [ms], which the device sends to the host when
		entering dfuMANIFEST state. Host waits this timeout, before
		sending again an USB request to the device.

- USB Device Android Fastboot support:
		CONFIG_USB_FUNCTION_FASTBOOT
		This enables the USB part of the fastboot gadget

		CONFIG_CMD_FASTBOOT
		This enables the command "fastboot" which enables the Android
		fastboot mode for the platform's USB device. Fastboot is a USB
		protocol for downloading images, flashing and device control
		used on Android devices.
		See doc/README.android-fastboot for more information.

		CONFIG_ANDROID_BOOT_IMAGE
		This enables support for booting images which use the Android
		image format header.

		CONFIG_FASTBOOT_BUF_ADDR
		The fastboot protocol requires a large memory buffer for
		downloads. Define this to the starting RAM address to use for
		downloaded images.

		CONFIG_FASTBOOT_BUF_SIZE
		The fastboot protocol requires a large memory buffer for
		downloads. This buffer should be as large as possible for a
		platform. Define this to the size available RAM for fastboot.

		CONFIG_FASTBOOT_FLASH
		The fastboot protocol includes a "flash" command for writing
		the downloaded image to a non-volatile storage device. Define
		this to enable the "fastboot flash" command.

		CONFIG_FASTBOOT_FLASH_MMC_DEV
		The fastboot "flash" command requires additional information
		regarding the non-volatile storage device. Define this to
		the eMMC device that fastboot should use to store the image.

		CONFIG_FASTBOOT_GPT_NAME
		The fastboot "flash" command supports writing the downloaded
		image to the Protective MBR and the Primary GUID Partition
		Table. (Additionally, this downloaded image is post-processed
		to generate and write the Backup GUID Partition Table.)
		This occurs when the specified "partition name" on the
		"fastboot flash" command line matches this value.
		The default is "gpt" if undefined.

		CONFIG_FASTBOOT_MBR_NAME
		The fastboot "flash" command supports writing the downloaded
		image to DOS MBR.
		This occurs when the "partition name" specified on the
		"fastboot flash" command line matches this value.
		If not defined the default value "mbr" is used.

- Journaling Flash filesystem support:
		CONFIG_JFFS2_NAND
		Define these for a default partition on a NAND device

		CONFIG_SYS_JFFS2_FIRST_SECTOR,
		CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS
		Define these for a default partition on a NOR device

- FAT(File Allocation Table) filesystem write function support:
		CONFIG_FAT_WRITE

		Define this to enable support for saving memory data as a
		file in FAT formatted partition.

		This will also enable the command "fatwrite" enabling the
		user to write files to FAT.

- CBFS (Coreboot Filesystem) support:
		CONFIG_CMD_CBFS

		Define this to enable support for reading from a Coreboot
		filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls
		and cbfsload.

- FAT(File Allocation Table) filesystem cluster size:
		CONFIG_FS_FAT_MAX_CLUSTSIZE

		Define the max cluster size for fat operations else
		a default value of 65536 will be defined.

- Keyboard Support:
		See Kconfig help for available keyboard drivers.

		CONFIG_KEYBOARD

		Define this to enable a custom keyboard support.
		This simply calls drv_keyboard_init() which must be
		defined in your board-specific files. This option is deprecated
		and is only used by novena. For new boards, use driver model
		instead.

- Video support:
		CONFIG_FSL_DIU_FB
		Enable the Freescale DIU video driver.	Reference boards for
		SOCs that have a DIU should define this macro to enable DIU
		support, and should also define these other macros:

			CONFIG_SYS_DIU_ADDR
			CONFIG_VIDEO
			CONFIG_CMD_BMP
			CONFIG_CFB_CONSOLE
			CONFIG_VIDEO_SW_CURSOR
			CONFIG_VGA_AS_SINGLE_DEVICE
			CONFIG_VIDEO_LOGO
			CONFIG_VIDEO_BMP_LOGO

		The DIU driver will look for the 'video-mode' environment
		variable, and if defined, enable the DIU as a console during
		boot.  See the documentation file doc/README.video for a
		description of this variable.

- LCD Support:	CONFIG_LCD

		Define this to enable LCD support (for output to LCD
		display); also select one of the supported displays
		by defining one of these:

		CONFIG_ATMEL_LCD:

			HITACHI TX09D70VM1CCA, 3.5", 240x320.

		CONFIG_NEC_NL6448AC33:

			NEC NL6448AC33-18. Active, color, single scan.

		CONFIG_NEC_NL6448BC20

			NEC NL6448BC20-08. 6.5", 640x480.
			Active, color, single scan.

		CONFIG_NEC_NL6448BC33_54

			NEC NL6448BC33-54. 10.4", 640x480.
			Active, color, single scan.

		CONFIG_SHARP_16x9

			Sharp 320x240. Active, color, single scan.
			It isn't 16x9, and I am not sure what it is.

		CONFIG_SHARP_LQ64D341

			Sharp LQ64D341 display, 640x480.
			Active, color, single scan.

		CONFIG_HLD1045

			HLD1045 display, 640x480.
			Active, color, single scan.

		CONFIG_OPTREX_BW

			Optrex	 CBL50840-2 NF-FW 99 22 M5
			or
			Hitachi	 LMG6912RPFC-00T
			or
			Hitachi	 SP14Q002

			320x240. Black & white.

		Normally display is black on white background; define
		CONFIG_SYS_WHITE_ON_BLACK to get it inverted.

		CONFIG_LCD_ALIGNMENT

		Normally the LCD is page-aligned (typically 4KB). If this is
		defined then the LCD will be aligned to this value instead.
		For ARM it is sometimes useful to use MMU_SECTION_SIZE
		here, since it is cheaper to change data cache settings on
		a per-section basis.


		CONFIG_LCD_ROTATION

		Sometimes, for example if the display is mounted in portrait
		mode or even if it's mounted landscape but rotated by 180degree,
		we need to rotate our content of the display relative to the
		framebuffer, so that user can read the messages which are
		printed out.
		Once CONFIG_LCD_ROTATION is defined, the lcd_console will be
		initialized with a given rotation from "vl_rot" out of
		"vidinfo_t" which is provided by the board specific code.
		The value for vl_rot is coded as following (matching to
		fbcon=rotate:<n> linux-kernel commandline):
		0 = no rotation respectively 0 degree
		1 = 90 degree rotation
		2 = 180 degree rotation
		3 = 270 degree rotation

		If CONFIG_LCD_ROTATION is not defined, the console will be
		initialized with 0degree rotation.

		CONFIG_LCD_BMP_RLE8

		Support drawing of RLE8-compressed bitmaps on the LCD.

		CONFIG_I2C_EDID

		Enables an 'i2c edid' command which can read EDID
		information over I2C from an attached LCD display.

- Splash Screen Support: CONFIG_SPLASH_SCREEN

		If this option is set, the environment is checked for
		a variable "splashimage". If found, the usual display
		of logo, copyright and system information on the LCD
		is suppressed and the BMP image at the address
		specified in "splashimage" is loaded instead. The
		console is redirected to the "nulldev", too. This
		allows for a "silent" boot where a splash screen is
		loaded very quickly after power-on.

		CONFIG_SPLASHIMAGE_GUARD

		If this option is set, then U-Boot will prevent the environment
		variable "splashimage" from being set to a problematic address
		(see doc/README.displaying-bmps).
		This option is useful for targets where, due to alignment
		restrictions, an improperly aligned BMP image will cause a data
		abort. If you think you will not have problems with unaligned
		accesses (for example because your toolchain prevents them)
		there is no need to set this option.

		CONFIG_SPLASH_SCREEN_ALIGN

		If this option is set the splash image can be freely positioned
		on the screen. Environment variable "splashpos" specifies the
		position as "x,y". If a positive number is given it is used as
		number of pixel from left/top. If a negative number is given it
		is used as number of pixel from right/bottom. You can also
		specify 'm' for centering the image.

		Example:
		setenv splashpos m,m
			=> image at center of screen

		setenv splashpos 30,20
			=> image at x = 30 and y = 20

		setenv splashpos -10,m
			=> vertically centered image
			   at x = dspWidth - bmpWidth - 9

- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP

		If this option is set, additionally to standard BMP
		images, gzipped BMP images can be displayed via the
		splashscreen support or the bmp command.

- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8

		If this option is set, 8-bit RLE compressed BMP images
		can be displayed via the splashscreen support or the
		bmp command.

- Do compressing for memory range:
		CONFIG_CMD_ZIP

		If this option is set, it would use zlib deflate method
		to compress the specified memory at its best effort.

- Compression support:
		CONFIG_GZIP

		Enabled by default to support gzip compressed images.

		CONFIG_BZIP2

		If this option is set, support for bzip2 compressed
		images is included. If not, only uncompressed and gzip
		compressed images are supported.

		NOTE: the bzip2 algorithm requires a lot of RAM, so
		the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should
		be at least 4MB.

		CONFIG_LZMA

		If this option is set, support for lzma compressed
		images is included.

		Note: The LZMA algorithm adds between 2 and 4KB of code and it
		requires an amount of dynamic memory that is given by the
		formula:

			(1846 + 768 << (lc + lp)) * sizeof(uint16)

		Where lc and lp stand for, respectively, Literal context bits
		and Literal pos bits.

		This value is upper-bounded by 14MB in the worst case. Anyway,
		for a ~4MB large kernel image, we have lc=3 and lp=0 for a
		total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is
		a very small buffer.

		Use the lzmainfo tool to determinate the lc and lp values and
		then calculate the amount of needed dynamic memory (ensuring
		the appropriate CONFIG_SYS_MALLOC_LEN value).

		CONFIG_LZO

		If this option is set, support for LZO compressed images
		is included.

- MII/PHY support:
		CONFIG_PHY_ADDR

		The address of PHY on MII bus.

		CONFIG_PHY_CLOCK_FREQ (ppc4xx)

		The clock frequency of the MII bus

		CONFIG_PHY_GIGE

		If this option is set, support for speed/duplex
		detection of gigabit PHY is included.

		CONFIG_PHY_RESET_DELAY

		Some PHY like Intel LXT971A need extra delay after
		reset before any MII register access is possible.
		For such PHY, set this option to the usec delay
		required. (minimum 300usec for LXT971A)

		CONFIG_PHY_CMD_DELAY (ppc4xx)

		Some PHY like Intel LXT971A need extra delay after
		command issued before MII status register can be read

- IP address:
		CONFIG_IPADDR

		Define a default value for the IP address to use for
		the default Ethernet interface, in case this is not
		determined through e.g. bootp.
		(Environment variable "ipaddr")

- Server IP address:
		CONFIG_SERVERIP

		Defines a default value for the IP address of a TFTP
		server to contact when using the "tftboot" command.
		(Environment variable "serverip")

		CONFIG_KEEP_SERVERADDR

		Keeps the server's MAC address, in the env 'serveraddr'
		for passing to bootargs (like Linux's netconsole option)

- Gateway IP address:
		CONFIG_GATEWAYIP

		Defines a default value for the IP address of the
		default router where packets to other networks are
		sent to.
		(Environment variable "gatewayip")

- Subnet mask:
		CONFIG_NETMASK

		Defines a default value for the subnet mask (or
		routing prefix) which is used to determine if an IP
		address belongs to the local subnet or needs to be
		forwarded through a router.
		(Environment variable "netmask")

- Multicast TFTP Mode:
		CONFIG_MCAST_TFTP

		Defines whether you want to support multicast TFTP as per
		rfc-2090; for example to work with atftp.  Lets lots of targets
		tftp down the same boot image concurrently.  Note: the Ethernet
		driver in use must provide a function: mcast() to join/leave a
		multicast group.

- BOOTP Recovery Mode:
		CONFIG_BOOTP_RANDOM_DELAY

		If you have many targets in a network that try to
		boot using BOOTP, you may want to avoid that all
		systems send out BOOTP requests at precisely the same
		moment (which would happen for instance at recovery
		from a power failure, when all systems will try to
		boot, thus flooding the BOOTP server. Defining
		CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be
		inserted before sending out BOOTP requests. The
		following delays are inserted then:

		1st BOOTP request:	delay 0 ... 1 sec
		2nd BOOTP request:	delay 0 ... 2 sec
		3rd BOOTP request:	delay 0 ... 4 sec
		4th and following
		BOOTP requests:		delay 0 ... 8 sec

		CONFIG_BOOTP_ID_CACHE_SIZE

		BOOTP packets are uniquely identified using a 32-bit ID. The
		server will copy the ID from client requests to responses and
		U-Boot will use this to determine if it is the destination of
		an incoming response. Some servers will check that addresses
		aren't in use before handing them out (usually using an ARP
		ping) and therefore take up to a few hundred milliseconds to
		respond. Network congestion may also influence the time it
		takes for a response to make it back to the client. If that
		time is too long, U-Boot will retransmit requests. In order
		to allow earlier responses to still be accepted after these
		retransmissions, U-Boot's BOOTP client keeps a small cache of
		IDs. The CONFIG_BOOTP_ID_CACHE_SIZE controls the size of this
		cache. The default is to keep IDs for up to four outstanding
		requests. Increasing this will allow U-Boot to accept offers
		from a BOOTP client in networks with unusually high latency.

- DHCP Advanced Options:
		You can fine tune the DHCP functionality by defining
		CONFIG_BOOTP_* symbols:

		CONFIG_BOOTP_SUBNETMASK
		CONFIG_BOOTP_GATEWAY
		CONFIG_BOOTP_HOSTNAME
		CONFIG_BOOTP_NISDOMAIN
		CONFIG_BOOTP_BOOTPATH
		CONFIG_BOOTP_BOOTFILESIZE
		CONFIG_BOOTP_DNS
		CONFIG_BOOTP_DNS2
		CONFIG_BOOTP_SEND_HOSTNAME
		CONFIG_BOOTP_NTPSERVER
		CONFIG_BOOTP_TIMEOFFSET
		CONFIG_BOOTP_VENDOREX
		CONFIG_BOOTP_MAY_FAIL

		CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip
		environment variable, not the BOOTP server.

		CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found
		after the configured retry count, the call will fail
		instead of starting over.  This can be used to fail over
		to Link-local IP address configuration if the DHCP server
		is not available.

		CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS
		serverip from a DHCP server, it is possible that more
		than one DNS serverip is offered to the client.
		If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
		serverip will be stored in the additional environment
		variable "dnsip2". The first DNS serverip is always
		stored in the variable "dnsip", when CONFIG_BOOTP_DNS
		is defined.

		CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable
		to do a dynamic update of a DNS server. To do this, they
		need the hostname of the DHCP requester.
		If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content
		of the "hostname" environment variable is passed as
		option 12 to the DHCP server.

		CONFIG_BOOTP_DHCP_REQUEST_DELAY

		A 32bit value in microseconds for a delay between
		receiving a "DHCP Offer" and sending the "DHCP Request".
		This fixes a problem with certain DHCP servers that don't
		respond 100% of the time to a "DHCP request". E.g. On an
		AT91RM9200 processor running at 180MHz, this delay needed
		to be *at least* 15,000 usec before a Windows Server 2003
		DHCP server would reply 100% of the time. I recommend at
		least 50,000 usec to be safe. The alternative is to hope
		that one of the retries will be successful but note that
		the DHCP timeout and retry process takes a longer than
		this delay.

 - Link-local IP address negotiation:
		Negotiate with other link-local clients on the local network
		for an address that doesn't require explicit configuration.
		This is especially useful if a DHCP server cannot be guaranteed
		to exist in all environments that the device must operate.