specific to be undertaken on a native platform. The sandbox is also used to
run some of U-Boot's tests.
-See board/sandbox/sandbox/README.sandbox for more details.
+See board/sandbox/README.sandbox for more details.
Configuration Options:
interleaving mode, handled by Dickens for Freescale layerscape
SoCs with ARM core.
+ CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS
+ Number of controllers used as main memory.
+
+ CONFIG_SYS_FSL_OTHER_DDR_NUM_CTRLS
+ Number of controllers used for other than main memory.
+
+ CONFIG_SYS_FSL_SEC_BE
+ Defines the SEC controller register space as Big Endian
+
+ CONFIG_SYS_FSL_SEC_LE
+ Defines the SEC controller register space as Little Endian
+
- Intel Monahans options:
CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO
exists, unlike the similar options in the Linux kernel. Do not
set these options unless they apply!
-- CPU timer options:
- CONFIG_SYS_HZ
-
- The frequency of the timer returned by get_timer().
- get_timer() must operate in milliseconds and this CONFIG
- option must be set to 1000.
-
- Linux Kernel Interface:
CONFIG_CLOCKS_IN_MHZ
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_SH_ETHER_CACHE_WRITEBACK
If this option is set, the driver enables cache flush.
+- PWM Support:
+ CONFIG_PWM_IMX
+ Support for PWM modul on the imx6.
+
- TPM Support:
CONFIG_TPM
Support TPM devices.
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
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.
+
- Journaling Flash filesystem support:
CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
CONFIG_JFFS2_NAND_DEV
200 ms.
- Configuration Management:
+ CONFIG_BUILD_TARGET
+
+ Some SoCs need special image types (e.g. U-Boot binary
+ with a special header) as build targets. By defining
+ CONFIG_BUILD_TARGET in the SoC / board header, this
+ special image will be automatically built upon calling
+ make / MAKEALL.
+
CONFIG_IDENT_STRING
If defined, this string will be added to the U-Boot
Enable auto completion of commands using TAB.
- Note that this feature has NOT been implemented yet
- for the "hush" shell.
-
-
CONFIG_SYS_HUSH_PARSER
Define this variable to enable the "hush" shell (from
memories can be connected with a given cs line.
currently Xilinx Zynq qspi support these type of connections.
+ CONFIG_SYS_SPI_ST_ENABLE_WP_PIN
+ enable the W#/Vpp signal to disable writing to the status
+ register on ST MICRON flashes like the N25Q128.
+ The status register write enable/disable bit, combined with
+ the W#/VPP signal provides hardware data protection for the
+ device as follows: When the enable/disable bit is set to 1,
+ and the W#/VPP signal is driven LOW, the status register
+ nonvolatile bits become read-only and the WRITE STATUS REGISTER
+ operation will not execute. The only way to exit this
+ hardware-protected mode is to drive W#/VPP HIGH.
+
- SystemACE Support:
CONFIG_SYSTEMACE
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS,
- CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION
+ CONFIG_SYS_MMC_SD_FS_BOOT_PARTITION
Address, size and partition on the MMC to load U-Boot from
when the MMC is being used in raw mode.
CONFIG_SPL_FAT_SUPPORT
Support for fs/fat/libfat.o in SPL binary
- CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME
- Filename to read to load U-Boot when reading from FAT
+ CONFIG_SPL_EXT_SUPPORT
+ Support for EXT filesystem in SPL binary
- CONFIG_SPL_FAT_LOAD_KERNEL_NAME
+ CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
+ Filename to read to load U-Boot when reading from filesystem
+
+ CONFIG_SPL_FS_LOAD_KERNEL_NAME
Filename to read to load kernel uImage when reading
- from FAT (for Falcon mode)
+ from filesystem (for Falcon mode)
- CONFIG_SPL_FAT_LOAD_ARGS_NAME
+ CONFIG_SPL_FS_LOAD_ARGS_NAME
Filename to read to load kernel argument parameters
- when reading from FAT (for Falcon mode)
+ when reading from filesystem (for Falcon mode)
CONFIG_SPL_MPC83XX_WAIT_FOR_NAND
Set this for NAND SPL on PPC mpc83xx targets, so that
The memory will be freed (or in fact just forgotton) when
U-Boot relocates itself.
- Pre-relocation malloc() is only supported on sandbox
+ Pre-relocation malloc() is only supported on ARM and sandbox
at present but is fairly easy to enable for other archs.
- Pre-relocation malloc() is only supported on ARM at present
- but is fairly easy to enable for other archs.
-
- CONFIG_SYS_BOOTM_LEN:
Normally compressed uImages are limited to an
uncompressed size of 8 MBytes. If this is not enough,
be asserted. See doc/README.omap-reset-time for details on how
the value can be calulated 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
+ building U-Boot to enable this.
+
The following definitions that deal with the placement and management
of environment data (variable area); in general, we support the
following configurations:
make O=/tmp/build NAME_defconfig
make O=/tmp/build all
-2. Set environment variable BUILD_DIR to point to the desired location:
+2. Set environment variable KBUILD_OUTPUT to point to the desired location:
- export BUILD_DIR=/tmp/build
+ export KBUILD_OUTPUT=/tmp/build
make distclean
make NAME_defconfig
make all
-Note that the command line "O=" setting overrides the BUILD_DIR environment
+Note that the command line "O=" setting overrides the KBUILD_OUTPUT environment
variable.