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:
/arc Files generic to ARC architecture
/arm Files generic to ARM architecture
/avr32 Files generic to AVR32 architecture
- /blackfin Files generic to Analog Devices Blackfin architecture
/m68k Files generic to m68k architecture
/microblaze Files generic to microblaze architecture
/mips Files generic to MIPS architecture
/powerpc Files generic to PowerPC architecture
/sandbox Files generic to HW-independent "sandbox"
/sh Files generic to SH architecture
- /sparc Files generic to SPARC architecture
/x86 Files generic to x86 architecture
/api Machine/arch independent API for external apps
/board Board dependent files
+/cmd U-Boot commands functions
/common Misc architecture independent functions
/configs Board default configuration files
/disk Code for disk drive partition handling
- stack is optionally in SDRAM, if CONFIG_SPL_STACK_R is defined and
CONFIG_SPL_STACK_R_ADDR points into SDRAM
- preloader_console_init() can be called here - typically this is
- done by defining CONFIG_SPL_BOARD_INIT and then supplying a
+ done by selecting CONFIG_SPL_BOARD_INIT and then supplying a
spl_board_init() function containing this call
- loads U-Boot or (in falcon mode) Linux
- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined)
Define exactly one, e.g. CONFIG_ATSTK1002
-- CPU Module Type: (if CONFIG_COGENT is defined)
- Define exactly one of
- CONFIG_CMA286_60_OLD
---- FIXME --- not tested yet:
- CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P,
- CONFIG_CMA287_23, CONFIG_CMA287_50
-
-- Motherboard Type: (if CONFIG_COGENT is defined)
- Define exactly one of
- CONFIG_CMA101, CONFIG_CMA102
-
-- Motherboard I/O Modules: (if CONFIG_COGENT is defined)
- Define one or more of
- CONFIG_CMA302
-
-- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined)
- Define one or more of
- CONFIG_LCD_HEARTBEAT - update a character position on
- the LCD display every second with
- a "rotator" |\-/|\-/
-
- Marvell Family Member
CONFIG_SYS_MVFS - define it if you want to enable
multiple fs option at one time
Defines the string to utilize when trying to match PCIe device
tree nodes for the given platform.
- CONFIG_SYS_PPC_E500_DEBUG_TLB
-
- Enables a temporary TLB entry to be used during boot to work
- around limitations in e500v1 and e500v2 external debugger
- support. This reduces the portions of the boot code where
- breakpoints and single stepping do not work. The value of this
- symbol should be set to the TLB1 entry to be used for this
- purpose.
-
CONFIG_SYS_FSL_ERRATUM_A004510
Enables a workaround for erratum A004510. If set,
CONFIG_SYS_FSL_IFC_LE
Defines the IFC controller register space as Little Endian
+ CONFIG_SYS_FSL_IFC_CLK_DIV
+ Defines divider of platform clock(clock input to IFC controller).
+
+ CONFIG_SYS_FSL_LBC_CLK_DIV
+ Defines divider of platform clock(clock input to eLBC controller).
+
CONFIG_SYS_FSL_PBL_PBI
It enables addition of RCW (Power on reset configuration) in built image.
Please refer doc/README.pblimage for more details
CONFIG_SYS_FSL_SEC_LE
Defines the SEC controller register space as Little Endian
-- Intel Monahans options:
- CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO
-
- Defines the Monahans run mode to oscillator
- ratio. Valid values are 8, 16, 24, 31. The core
- frequency is this value multiplied by 13 MHz.
-
- CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO
-
- Defines the Monahans turbo mode to oscillator
- ratio. Valid values are 1 (default if undefined) and
- 2. The core frequency as calculated above is multiplied
- by this value.
-
- MIPS CPU options:
CONFIG_SYS_INIT_SP_OFFSET
Select high exception vectors of the ARM core, e.g., do not
clear the V bit of the c1 register of CP15.
- CONFIG_SYS_THUMB_BUILD
-
- Use this flag to build U-Boot using the Thumb instruction
- set for ARM architectures. Thumb instruction set provides
- better code density. For ARM architectures that support
- Thumb2 this flag will result in Thumb2 code generated by
- GCC.
-
- CONFIG_ARM_ERRATA_716044
- CONFIG_ARM_ERRATA_742230
- CONFIG_ARM_ERRATA_743622
- CONFIG_ARM_ERRATA_751472
- CONFIG_ARM_ERRATA_761320
- CONFIG_ARM_ERRATA_773022
- CONFIG_ARM_ERRATA_774769
- CONFIG_ARM_ERRATA_794072
-
- If set, the workarounds for these ARM errata are applied early
- during U-Boot startup. Note that these options force the
- workarounds to be applied; no CPU-type/version detection
- exists, unlike the similar options in the Linux kernel. Do not
- set these options unless they apply!
-
COUNTER_FREQUENCY
Generic timer clock source frequency.
different from COUNTER_FREQUENCY, and can only be determined
at run time.
- NOTE: The following can be machine specific errata. These
- do have ability to provide rudimentary version and machine
- specific checks, but expect no product checks.
- CONFIG_ARM_ERRATA_430973
- CONFIG_ARM_ERRATA_454179
- CONFIG_ARM_ERRATA_621766
- CONFIG_ARM_ERRATA_798870
- CONFIG_ARM_ERRATA_801819
-
- Tegra SoC options:
CONFIG_TEGRA_SUPPORT_NON_SECURE
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_CMD_AES AES 128 CBC encrypt/decrypt
CONFIG_CMD_ASKENV * ask for env variable
CONFIG_CMD_BDI bdinfo
- CONFIG_CMD_BEDBUG * Include BedBug Debugger
- CONFIG_CMD_BMP * BMP support
- CONFIG_CMD_BSP * Board specific commands
CONFIG_CMD_BOOTD bootd
CONFIG_CMD_BOOTI * ARM64 Linux kernel Image support
CONFIG_CMD_CACHE * icache, dcache
- CONFIG_CMD_CLK * clock command support
CONFIG_CMD_CONSOLE coninfo
- CONFIG_CMD_CRC32 * crc32
- CONFIG_CMD_DATE * support for RTC, date/time...
CONFIG_CMD_DHCP * DHCP support
CONFIG_CMD_DIAG * Diagnostics
- CONFIG_CMD_DS4510 * ds4510 I2C gpio commands
- CONFIG_CMD_DS4510_INFO * ds4510 I2C info command
- CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd
- CONFIG_CMD_DS4510_RST * ds4510 I2C rst command
- CONFIG_CMD_DTT * Digital Therm and Thermostat
CONFIG_CMD_ECHO echo arguments
CONFIG_CMD_EDITENV edit env variable
- CONFIG_CMD_EEPROM * EEPROM read/write support
- CONFIG_CMD_EEPROM_LAYOUT* EEPROM layout aware commands
CONFIG_CMD_ELF * bootelf, bootvx
- CONFIG_CMD_ENV_CALLBACK * display details about env callbacks
- CONFIG_CMD_ENV_FLAGS * display details about env flags
CONFIG_CMD_ENV_EXISTS * check existence of env variable
CONFIG_CMD_EXPORTENV * export the environment
CONFIG_CMD_EXT2 * ext2 command support
that work for multiple fs types
CONFIG_CMD_FS_UUID * Look up a filesystem UUID
CONFIG_CMD_SAVEENV saveenv
- CONFIG_CMD_FDC * Floppy Disk Support
CONFIG_CMD_FAT * FAT command support
CONFIG_CMD_FLASH flinfo, erase, protect
CONFIG_CMD_FPGA FPGA device initialization support
- CONFIG_CMD_FUSE * Device fuse support
- CONFIG_CMD_GETTIME * Get time since boot
CONFIG_CMD_GO * the 'go' command (exec code)
CONFIG_CMD_GREPENV * search environment
- CONFIG_CMD_HASH * calculate hash / digest
CONFIG_CMD_I2C * I2C serial bus support
- CONFIG_CMD_IDE * IDE harddisk support
CONFIG_CMD_IMI iminfo
CONFIG_CMD_IMLS List all images found in NOR flash
CONFIG_CMD_IMLS_NAND * List all images found in NAND flash
- CONFIG_CMD_IMMAP * IMMR dump support
- CONFIG_CMD_IOTRACE * I/O tracing for debugging
CONFIG_CMD_IMPORTENV * import an environment
CONFIG_CMD_INI * import data from an ini file into the env
- CONFIG_CMD_IRQ * irqinfo
CONFIG_CMD_ITEST Integer/string test of 2 values
- CONFIG_CMD_JFFS2 * JFFS2 Support
- CONFIG_CMD_KGDB * kgdb
CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader)
CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration
(169.254.*.*)
CONFIG_CMD_SETGETDCR Support for DCR Register access
(4xx only)
CONFIG_CMD_SF * Read/write/erase SPI NOR flash
- CONFIG_CMD_SHA1SUM * print sha1 memory digest
- (requires CONFIG_CMD_MEMORY)
CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x
CONFIG_CMD_SOURCE "source" command Support
CONFIG_CMD_SPI * SPI serial bus support
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:
+ be done using one of the three options below:
CONFIG_OF_EMBED
If this variable is defined, U-Boot will embed a device tree
still use the individual files if you need something more
exotic.
+ CONFIG_OF_BOARD
+ If this variable is defined, U-Boot will use the device tree
+ provided by the board at runtime instead of embedding one with
+ the image. Only boards defining board_fdt_blob_setup() support
+ this option (see include/fdtdec.h file).
+
- Watchdog:
CONFIG_WATCHDOG
If this variable is defined, it enables watchdog
disk/part_efi.c
CONFIG_MTD_PARTITIONS Memory Technology Device partition table.
- If IDE or SCSI support is enabled (CONFIG_CMD_IDE or
+ If IDE or SCSI support is enabled (CONFIG_IDE or
CONFIG_SCSI) you must configure support for at
least one non-MTD partition type as well.
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
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.
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.
- Default is GPT_ENTRY_NAME (currently "gpt") if undefined.
+ 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, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
- CONFIG_JFFS2_NAND_DEV
+ 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
- CONFIG_SYS_JFFS_CUSTOM_PART
- Define this to create an own partition. You have to provide a
- function struct part_info* jffs2_part_info(int part_num)
-
- If you define only one JFFS2 partition you may also want to
- #define CONFIG_SYS_JFFS_SINGLE_PART 1
- to disable the command chpart. This is the default when you
- have not defined a custom partition
-
- FAT(File Allocation Table) filesystem write function support:
CONFIG_FAT_WRITE
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
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
CONFIG_SYS_DIU_ADDR
CONFIG_VIDEO
- CONFIG_CMD_BMP
CONFIG_CFB_CONSOLE
CONFIG_VIDEO_SW_CURSOR
CONFIG_VGA_AS_SINGLE_DEVICE
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
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
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
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
A byte containing the id of the VLAN.
-- Status LED: CONFIG_STATUS_LED
+- Status LED: CONFIG_LED_STATUS
Several configurations allow to display the current
status using a LED. For instance, the LED will blink
soon as a reply to a BOOTP request was received, and
start blinking slow once the Linux kernel is running
(supported by a status LED driver in the Linux
- kernel). Defining CONFIG_STATUS_LED enables this
+ kernel). Defining CONFIG_LED_STATUS enables this
feature in U-Boot.
Additional options:
- CONFIG_GPIO_LED
+ CONFIG_LED_STATUS_GPIO
The status LED can be connected to a GPIO pin.
In such cases, the gpio_led driver can be used as a
- status LED backend implementation. Define CONFIG_GPIO_LED
+ status LED backend implementation. Define CONFIG_LED_STATUS_GPIO
to include the gpio_led driver in the U-Boot binary.
CONFIG_GPIO_LED_INVERTED_TABLE
- 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.
If you do not have i2c muxes on your board, omit this define.
-- Legacy I2C Support: CONFIG_HARD_I2C
-
- NOTE: It is intended to move drivers to CONFIG_SYS_I2C which
- provides the following compelling advantages:
-
- - more than one i2c adapter is usable
- - approved multibus support
- - better i2c mux support
-
- ** Please consider updating your I2C driver now. **
-
- These enable legacy I2C serial bus commands. Defining
- CONFIG_HARD_I2C will include the appropriate I2C driver
- for the selected CPU.
-
- This will allow you to use i2c commands at the u-boot
- command line (as long as you set CONFIG_CMD_I2C in
- CONFIG_COMMANDS) and communicate with i2c based realtime
- clock chips. See common/cmd_i2c.c for a description of the
- command line interface.
-
- CONFIG_HARD_I2C selects a hardware I2C controller.
-
- There are several other quantities that must also be
- defined when you define CONFIG_HARD_I2C.
-
- In both cases you will need to define CONFIG_SYS_I2C_SPEED
- to be the frequency (in Hz) at which you wish your i2c bus
- to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie
- the CPU's i2c node address).
-
- Now, the u-boot i2c code for the mpc8xx
- (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node
- and so its address should therefore be cleared to 0 (See,
- eg, MPC823e User's Manual p.16-473). So, set
- CONFIG_SYS_I2C_SLAVE to 0.
-
- CONFIG_SYS_I2C_INIT_MPC5XXX
-
- When a board is reset during an i2c bus transfer
- chips might think that the current transfer is still
- in progress. Reset the slave devices by sending start
- commands until the slave device responds.
-
- That's all that's required for CONFIG_HARD_I2C.
-
+- Legacy I2C Support:
If you use the software i2c interface (CONFIG_SYS_I2C_SOFT)
then the following macros need to be defined (examples are
from include/configs/lwmon.h):
custom i2c_init_board() routine in boards/xxx/board.c
is run early in the boot sequence.
- CONFIG_SYS_I2C_BOARD_LATE_INIT
-
- An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is
- defined a custom i2c_board_late_init() routine in
- boards/xxx/board.c is run AFTER the operations in i2c_init()
- is completed. This callpoint can be used to unreset i2c bus
- using CPU i2c controller register accesses for CPUs whose i2c
- controller provide such a method. It is called at the end of
- i2c_init() to allow i2c_init operations to setup the i2c bus
- controller on the CPU (e.g. setting bus speed & slave address).
-
- CONFIG_I2CFAST (PPC405GP|PPC405EP only)
-
- This option enables configuration of bi_iic_fast[] flags
- in u-boot bd_info structure based on u-boot environment
- variable "i2cfast". (see also i2cfast)
-
CONFIG_I2C_MULTI_BUS
This option allows the use of multiple I2C buses, each of which
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
If defined, then this indicates the I2C bus number for the RTC.
If not defined, then U-Boot assumes that RTC is on I2C bus 0.
- CONFIG_SYS_DTT_BUS_NUM
-
- If defined, then this indicates the I2C bus number for the DTT.
- If not defined, then U-Boot assumes that DTT is on I2C bus 0.
-
- CONFIG_SYS_I2C_DTT_ADDR:
-
- If defined, specifies the I2C address of the DTT device.
- If not defined, then U-Boot uses predefined value for
- specified DTT device.
-
CONFIG_SOFT_I2C_READ_REPEATED_START
defining this will force the i2c_read() function in
Specify the number of FPGA devices to support.
- CONFIG_CMD_FPGA_LOADMK
-
- Enable support for fpga loadmk command
-
- CONFIG_CMD_FPGA_LOADP
-
- Enable support for fpga loadp command - load partial bitstream
-
- CONFIG_CMD_FPGA_LOADBP
-
- Enable support for fpga loadbp command - load partial bitstream
- (Xilinx only)
-
CONFIG_SYS_FPGA_PROG_FEEDBACK
Enable printing of hash marks during FPGA configuration.
this is instead controlled by the value of
/config/load-environment.
-- Parallel Flash support:
- CONFIG_SYS_NO_FLASH
-
- Traditionally U-Boot was run on systems with parallel NOR
- flash. This option is used to disable support for parallel NOR
- flash. This option should be defined if the board does not have
- parallel flash.
-
- If this option is not defined one of the generic flash drivers
- (e.g. CONFIG_FLASH_CFI_DRIVER or CONFIG_ST_SMI) must be
- selected or the board must provide an implementation of the
- flash API (see include/flash.h).
-
- DataFlash Support:
CONFIG_HAS_DATAFLASH
A better solution is to properly configure the firewall,
but sometimes that is not allowed.
-- Hashing support:
- CONFIG_CMD_HASH
-
- This enables a generic 'hash' command which can produce
- hashes / digests from a few algorithms (e.g. SHA1, SHA256).
-
- CONFIG_HASH_VERIFY
-
- Enable the hash verify command (hash -v). This adds to code
- size a little.
-
- CONFIG_SHA1 - This option enables support of hashing using SHA1
- algorithm. The hash is calculated in software.
- CONFIG_SHA256 - This option enables support of hashing using
- SHA256 algorithm. The hash is calculated in software.
- CONFIG_SHA_HW_ACCEL - This option enables hardware acceleration
- for SHA1/SHA256 hashing.
- This affects the 'hash' command and also the
- hash_lookup_algo() function.
- CONFIG_SHA_PROG_HW_ACCEL - This option enables
- hardware-acceleration for SHA1/SHA256 progressive hashing.
- Data can be streamed in a block at a time and the hashing
- is performed in hardware.
-
- Note: There is also a sha1sum command, which should perhaps
- be deprecated in favour of 'hash sha1'.
-
-- Freescale i.MX specific commands:
- CONFIG_CMD_HDMIDETECT
- This enables 'hdmidet' command which returns true if an
- HDMI monitor is detected. This command is i.MX 6 specific.
-
- CONFIG_CMD_BMODE
- This enables the 'bmode' (bootmode) command for forcing
- a boot from specific media.
-
- This is useful for forcing the ROM's usb downloader to
- activate upon a watchdog reset which is nice when iterating
- on U-Boot. Using the reset button or running bmode normal
- will set it back to normal. This command currently
- supports i.MX53 and i.MX6.
-
- bootcount support:
CONFIG_BOOTCOUNT_LIMIT
CONFIG_AT91SAM9XE
enable special bootcounter support on at91sam9xe based boards.
- CONFIG_BLACKFIN
- enable special bootcounter support on blackfin based boards.
CONFIG_SOC_DA8XX
enable special bootcounter support on da850 based boards.
CONFIG_BOOTCOUNT_RAM
This define is introduced, as the legacy image format is
enabled per default for backward compatibility.
-- FIT image support:
- CONFIG_FIT_DISABLE_SHA256
- Supporting SHA256 hashes has quite an impact on binary size.
- For constrained systems sha256 hash support can be disabled
- with this option.
-
- TODO(sjg@chromium.org): Adjust this option to be positive,
- and move it to Kconfig
-
- Standalone program support:
CONFIG_STANDALONE_LOAD_ADDR
consider that a completely unreadable NAND block is bad,
and thus should be skipped silently.
- CONFIG_SPL_ABORT_ON_RAW_IMAGE
- When defined, SPL will proceed to another boot method
- if the image it has loaded does not have a signature.
-
CONFIG_SPL_RELOC_STACK
Adress of the start of the stack SPL will use after
relocation. If unspecified, this is equal to
CONFIG_SPL_INIT_MINIMAL
Arch init code should be built for a very small image
- CONFIG_SPL_LIBCOMMON_SUPPORT
- Support for common/libcommon.o in SPL binary
-
- CONFIG_SPL_LIBDISK_SUPPORT
- Support for disk/libdisk.o in SPL binary
-
- CONFIG_SPL_I2C_SUPPORT
- Support for drivers/i2c/libi2c.o in SPL binary
-
- CONFIG_SPL_GPIO_SUPPORT
- Support for drivers/gpio/libgpio.o in SPL binary
-
- CONFIG_SPL_MMC_SUPPORT
- Support for drivers/mmc/libmmc.o in SPL binary
-
- 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
Partition on the MMC to load U-Boot from when the MMC is being
used in fs mode
- CONFIG_SPL_FAT_SUPPORT
- Support for fs/fat/libfat.o in SPL binary
-
- CONFIG_SPL_EXT_SUPPORT
- Support for EXT filesystem in SPL binary
-
CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
Filename to read to load U-Boot when reading from filesystem
Support for a lightweight UBI (fastmap) scanner and
loader
- CONFIG_SPL_MTD_SUPPORT
- Support for the MTD subsystem within SPL. Useful for
- environment on NAND support within SPL.
-
CONFIG_SPL_NAND_RAW_ONLY
Support to boot only raw u-boot.bin images. Use this only
if you need to save space.
- CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
- Set for the SPL on PPC mpc8xxx targets, support for
- drivers/ddr/fsl/libddr.o in SPL binary.
-
CONFIG_SPL_COMMON_INIT_DDR
Set for common ddr init with serial presence detect in
SPL binary.
Support for an OMAP3-specific set of functions to return the
ID and MFR of the first attached NAND chip, if present.
- CONFIG_SPL_SERIAL_SUPPORT
- Support for drivers/serial/libserial.o in SPL binary
-
- CONFIG_SPL_SPI_FLASH_SUPPORT
- Support for drivers/mtd/spi/libspi_flash.o in SPL binary
-
- CONFIG_SPL_SPI_SUPPORT
- Support for drivers/spi/libspi.o in SPL binary
-
CONFIG_SPL_RAM_DEVICE
Support for running image already present in ram, in SPL binary
- CONFIG_SPL_LIBGENERIC_SUPPORT
- Support for lib/libgeneric.o in SPL binary
-
- CONFIG_SPL_ENV_SUPPORT
- Support for the environment operating in SPL binary
-
- CONFIG_SPL_NET_SUPPORT
- Support for the net/libnet.o in SPL binary.
- It conflicts with SPL env from storage medium specified by
- CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE
-
CONFIG_SPL_PAD_TO
Image offset to which the SPL should be padded before appending
the SPL payload. By default, this is defined as
- 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_SDRAM_BASE:
Physical start address of SDRAM. _Must_ be 0 here.
-- CONFIG_SYS_MBIO_BASE:
- Physical start address of Motherboard I/O (if using a
- Cogent motherboard)
-
- CONFIG_SYS_FLASH_BASE:
Physical start address of Flash memory.
If defined, don't allow the -f switch to env set override variable
access flags.
-- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only)
- This is set by OMAP boards for the max time that reset should
- be asserted. See doc/README.omap-reset-time for details on how
- the value can be calculated on a given board.
-
- CONFIG_USE_STDINT
If stdint.h is available with your toolchain you can define this
option to enable it. You can provide option 'USE_STDINT=1' when
This setting describes a second storage area of CONFIG_ENV_SIZE
size used to hold a redundant copy of the environment data, so
that there is a valid backup copy in case there is a power failure
- during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be
+ during a "saveenv" operation. CONFIG_ENV_OFFSET_REDUND must be
aligned to an erase sector boundary.
- CONFIG_ENV_SPI_BUS (optional):
This setting describes a second storage area of CONFIG_ENV_SIZE
size used to hold a redundant copy of the environment data, so
that there is a valid backup copy in case there is a power failure
- during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be
+ during a "saveenv" operation. CONFIG_ENV_OFFSET_REDUND must be
aligned to an erase block boundary.
- CONFIG_ENV_RANGE (optional):
Define this to a string that is the name of the block device.
- - FAT_ENV_DEV_AND_PART:
+ - FAT_ENV_DEVICE_AND_PART:
Define this to a string to specify the partition of the device. It can
be as following:
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
addressable memory. This option causes some memory accesses
to be mapped through map_sysmem() / unmap_sysmem().
-- CONFIG_USE_ARCH_MEMCPY
- CONFIG_USE_ARCH_MEMSET
- If these options are used a optimized version of memcpy/memset will
- be used if available. These functions may be faster under some
- conditions but may increase the binary size.
-
- CONFIG_X86_RESET_VECTOR
If defined, the x86 reset vector code is included. This is not
needed when U-Boot is running from Coreboot.
-- CONFIG_SYS_MPUCLK
- Defines the MPU clock speed (in MHz).
-
- NOTE : currently only supported on AM335x platforms.
-
- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC:
Enables the RTC32K OSC on AM33xx based plattforms
Specifies that QE/FMAN firmware is located on the primary SD/MMC
device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device.
-- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH
- Specifies that QE/FMAN firmware is located on the primary SPI
- device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device.
-
- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE
Specifies that QE/FMAN firmware is located in the remote (master)
memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which
- CONFIG_FSL_MC_ENET
Enable the MC driver for Layerscape SoCs.
-- CONFIG_SYS_LS_MC_FW_ADDR
- The address in the storage device where the firmware is located. The
- meaning of this address depends on which CONFIG_SYS_LS_MC_FW_IN_xxx macro
- is also specified.
-
-- CONFIG_SYS_LS_MC_FW_LENGTH
- The maximum possible size of the firmware. The firmware binary format
- has a field that specifies the actual size of the firmware, but it
- might not be possible to read any part of the firmware unless some
- local storage is allocated to hold the entire firmware first.
-
-- CONFIG_SYS_LS_MC_FW_IN_NOR
- Specifies that MC firmware is located in NOR flash, mapped as
- normal addressable memory via the LBC. CONFIG_SYS_LS_MC_FW_ADDR is the
- virtual address in NOR flash.
-
Freescale Layerscape Debug Server Support:
-------------------------------------------
The Freescale Layerscape Debug Server Support supports the loading of
"Debug Server firmware" and triggering SP boot-rom.
This firmware often needs to be loaded during U-Boot booting.
-- CONFIG_FSL_DEBUG_SERVER
- Enable the Debug Server for Layerscape SoCs.
-
-- CONFIG_SYS_DEBUG_SERVER_DRAM_BLOCK_MIN_SIZE
- Define minimum DDR size required for debug server image
-
- CONFIG_SYS_MC_RSV_MEM_ALIGN
Define alignment of reserved memory MC requires
average for all boards 752 bytes for the whole U-Boot image,
624 text + 127 data).
-On Blackfin, the normal C ABI (except for P3) is followed as documented here:
- http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface
-
- ==> U-Boot will use P3 to hold a pointer to the global data
-
On ARM, the following registers are used:
R0: function argument word/integer result
projects / people / ms / u-boot.git / blobdiff