Examples:
U-Boot v2009.11 - Release November 2009
U-Boot v2009.11.1 - Release 1 in version November 2009 stable tree
- U-Boot v2010.09-rc1 - Release candiate 1 for September 2010 release
+ U-Boot v2010.09-rc1 - Release candidate 1 for September 2010 release
Directory Hierarchy:
This causes ft_system_setup() to be called before booting
the kernel.
- CONFIG_OF_BOOT_CPU
-
- This define fills in the correct boot CPU in the boot
- param header, the default value is zero if undefined.
-
CONFIG_OF_IDE_FIXUP
U-Boot can detect if an IDE device is present or not.
port routines must be defined elsewhere
(i.e. serial_init(), serial_getc(), ...)
- CONFIG_CFB_CONSOLE
- Enables console device for a color framebuffer. Needs following
- defines (cf. smiLynxEM, i8042)
- VIDEO_FB_LITTLE_ENDIAN graphic memory organisation
- (default big endian)
- VIDEO_HW_RECTFILL graphic chip supports
- rectangle fill
- (cf. smiLynxEM)
- VIDEO_HW_BITBLT graphic chip supports
- bit-blit (cf. smiLynxEM)
- VIDEO_VISIBLE_COLS visible pixel columns
- (cols=pitch)
- VIDEO_VISIBLE_ROWS visible pixel rows
- VIDEO_PIXEL_SIZE bytes per pixel
- VIDEO_DATA_FORMAT graphic data format
- (0-5, cf. cfb_console.c)
- VIDEO_FB_ADRS framebuffer address
- VIDEO_KBD_INIT_FCT keyboard int fct
- (i.e. rx51_kp_init())
- VIDEO_TSTC_FCT test char fct
- (i.e. rx51_kp_tstc)
- VIDEO_GETC_FCT get char fct
- (i.e. rx51_kp_getc)
- CONFIG_VIDEO_LOGO display Linux logo in
- upper left corner
- CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of
- linux_logo.h for logo.
- Requires CONFIG_VIDEO_LOGO
- CONFIG_CONSOLE_EXTRA_INFO
- additional board info beside
- the logo
- CONFIG_HIDE_LOGO_VERSION
- do not display bootloader
- version string
-
- When CONFIG_CFB_CONSOLE_ANSI is defined, console will support
- a limited number of ANSI escape sequences (cursor control,
- erase functions and limited graphics rendition control).
-
- When CONFIG_CFB_CONSOLE is defined, video console is
- default i/o. Serial console can be forced with
- environment 'console=serial'.
-
- When CONFIG_SILENT_CONSOLE is defined, all console
- messages (by U-Boot and Linux!) can be silenced with
- the "silent" environment variable. See
- doc/README.silent for more information.
-
- CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default
- is 0x00.
- CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default
- is 0xa0.
-
- Console Baudrate:
CONFIG_BAUDRATE - in bps
Select one of the baudrates listed in
must be defined, to setup the maximum idle timeout for
the SMC.
-- Pre-Console Buffer:
- Prior to the console being initialised (i.e. serial UART
- initialised etc) all console output is silently discarded.
- Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
- buffer any console messages prior to the console being
- initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ
- bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is
- a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ
- bytes are output before the console is initialised, the
- earlier bytes are discarded.
-
- Note that when printing the buffer a copy is made on the
- stack so CONFIG_PRE_CON_BUF_SZ must fit on the stack.
-
- 'Sane' compilers will generate smaller code if
- CONFIG_PRE_CON_BUF_SZ is a power of 2
-
- Autoboot Command:
CONFIG_BOOTCOMMAND
Only needed when CONFIG_BOOTDELAY is enabled;
CONFIG_LAN91C96
Support for SMSC's LAN91C96 chips.
- CONFIG_LAN91C96_BASE
- Define this to hold the physical address
- of the LAN91C96's I/O space
-
CONFIG_LAN91C96_USE_32_BIT
Define this to enable 32 bit addressing
- PWM Support:
CONFIG_PWM_IMX
- Support for PWM modul on the imx6.
+ Support for PWM module on the imx6.
- TPM Support:
CONFIG_TPM
Derive USB clock from external clock "blah"
- CONFIG_SYS_USB_EXTC_CLK 0x02
- CONFIG_SYS_USB_BRG_CLK 0xBLAH
- Derive USB clock from brgclk
- - CONFIG_SYS_USB_BRG_CLK 0x04
-
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
This will also enable the command "fatwrite" enabling the
user to write files to FAT.
-CBFS (Coreboot Filesystem) support
+- CBFS (Coreboot Filesystem) support:
CONFIG_CMD_CBFS
Define this to enable support for reading from a Coreboot
instead.
- Video support:
- CONFIG_VIDEO
-
- Define this to enable video support (for output to
- video).
-
- CONFIG_VIDEO_CT69000
-
- Enable Chips & Technologies 69000 Video chip
-
- CONFIG_VIDEO_SMI_LYNXEM
- Enable Silicon Motion SMI 712/710/810 Video chip. The
- video output is selected via environment 'videoout'
- (1 = LCD and 2 = CRT). If videoout is undefined, CRT is
- assumed.
-
- For the CT69000 and SMI_LYNXEM drivers, videomode is
- selected via environment 'videomode'. Two different ways
- are possible:
- - "videomode=num" 'num' is a standard LiLo mode numbers.
- Following standard modes are supported (* is default):
-
- Colors 640x480 800x600 1024x768 1152x864 1280x1024
- -------------+---------------------------------------------
- 8 bits | 0x301* 0x303 0x305 0x161 0x307
- 15 bits | 0x310 0x313 0x316 0x162 0x319
- 16 bits | 0x311 0x314 0x317 0x163 0x31A
- 24 bits | 0x312 0x315 0x318 ? 0x31B
- -------------+---------------------------------------------
- (i.e. setenv videomode 317; saveenv; reset;)
-
- - "videomode=bootargs" all the video parameters are parsed
- from the bootargs. (See drivers/video/videomodes.c)
-
-
- CONFIG_VIDEO_SED13806
- Enable Epson SED13806 driver. This driver supports 8bpp
- and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP
- or CONFIG_VIDEO_SED13806_16BPP
-
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
here, since it is cheaper to change data cache settings on
a per-section basis.
- CONFIG_CONSOLE_SCROLL_LINES
-
- When the console need to be scrolled, this is the number of
- lines to scroll by. It defaults to 1. Increasing this makes
- the console jump but can help speed up operation when scrolling
- is slow.
CONFIG_LCD_ROTATION
- CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3
- CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4
- CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4
- - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5
- - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5
- CONFIG_SYS_I2C_SH_NUM_CONTROLLERS for number of i2c buses
- drivers/i2c/omap24xx_i2c.c
additional defines:
CONFIG_SYS_NUM_I2C_BUSES
- Hold the number of i2c buses you want to use. If you
- don't use/have i2c muxes on your i2c bus, this
- is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can
- omit this define.
+ Hold the number of i2c buses you want to use.
CONFIG_SYS_I2C_DIRECT_BUS
define this, if you don't use i2c muxes on your hardware.
will skip addresses 0x50 and 0x68 on a board with one I2C bus
#define CONFIG_I2C_MULTI_BUS
- #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}}
+ #define CONFIG_SYS_I2C_NOPROBES {{0,0x50},{0,0x68},{1,0x54}}
will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1
CONFIG_SPL_INIT_MINIMAL
Arch init code should be built for a very small image
- CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
- CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS,
- Address and partition on the MMC to load U-Boot from
- when the MMC is being used in raw mode.
-
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
Partition on the MMC to load U-Boot from when the MMC is being
used in raw mode
- CONFIG_SYS_BAUDRATE_TABLE:
List of legal baudrate settings for this board.
-- CONFIG_SYS_CONSOLE_INFO_QUIET
- Suppress display of console information at boot.
-
-- CONFIG_SYS_CONSOLE_IS_IN_ENV
- If the board specific function
- extern int overwrite_console (void);
- returns 1, the stdin, stderr and stdout are switched to the
- serial port, else the settings in the environment are used.
-
-- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
- Enable the call to overwrite_console().
-
-- CONFIG_SYS_CONSOLE_ENV_OVERWRITE
- Enable overwrite of previous console environment settings.
-
- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END:
Begin and End addresses of the area used by the
simple memory test.
CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial
data is located at the end of the available space
(sometimes written as (CONFIG_SYS_INIT_RAM_SIZE -
- CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just
+ GENERATED_GBL_DATA_SIZE), and the initial stack is just
below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR +
CONFIG_SYS_GBL_DATA_OFFSET) downward.
enable SPI microcode relocation patch (MPC8xx);
define relocation offset in DPRAM [SCC4]
-- CONFIG_SYS_USE_OSCCLK:
- Use OSCM clock mode on MBX8xx board. Be careful,
- wrong setting might damage your board. Read
- doc/README.MBX before setting this variable!
-
- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only)
Offset of the bootmode word in DPRAM used by post
(Power On Self Tests). This definition overrides