/blackfin Files generic to Analog Devices Blackfin architecture
/cpu CPU specific files
/lib Architecture specific library files
- /x86 Files generic to x86 architecture
- /cpu CPU specific files
- /lib Architecture specific library files
/m68k Files generic to m68k architecture
/cpu CPU specific files
/mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs
/nios2 Files generic to Altera NIOS2 architecture
/cpu CPU specific files
/lib Architecture specific library files
+ /openrisc Files generic to OpenRISC architecture
+ /cpu CPU specific files
+ /lib Architecture specific library files
/powerpc Files generic to PowerPC architecture
/cpu CPU specific files
/74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs
/leon2 Files specific to Gaisler LEON2 SPARC CPU
/leon3 Files specific to Gaisler LEON3 SPARC CPU
/lib Architecture specific library files
+ /x86 Files generic to x86 architecture
+ /cpu CPU specific files
+ /lib Architecture specific library files
/api Machine/arch independent API for external apps
/board Board dependent files
/common Misc architecture independent functions
/disk Code for disk drive partition handling
/doc Documentation (don't expect too much)
/drivers Commonly used device drivers
+/dts Contains Makefile for building internal U-Boot fdt.
/examples Example code for standalone applications, etc.
/fs Filesystem code (cramfs, ext2, jffs2, etc.)
/include Header Files
/lzo Library files to support LZO decompression
/net Networking code
/post Power On Self Test
-/rtc Real Time Clock drivers
+/spl Secondary Program Loader framework
/tools Tools to build S-Record or U-Boot images, etc.
Software Configuration:
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
- Regular expression support:
CONFIG_REGEX
- If this variable is defined, U-Boot is linked against
- the SLRE (Super Light Regular Expression) library,
- which adds regex support to some commands, as for
- example "env grep" and "setexpr".
+ If this variable is defined, U-Boot is linked against
+ the SLRE (Super Light Regular Expression) library,
+ which adds regex support to some commands, as for
+ example "env grep" and "setexpr".
- Device tree:
CONFIG_OF_CONTROL
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.
+ The environment variable 'scsidevs' is set to the number of
+ SCSI devices found during the last scan.
- NETWORK Support (PCI):
CONFIG_E1000
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
offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and
CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first
bus.
- - If your board supports a second fsl i2c bus, define
+ - If your board supports a second fsl i2c bus, define
CONFIG_SYS_FSL_I2C2_OFFSET for the register offset
CONFIG_SYS_FSL_I2C2_SPEED for the speed and
CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the
second bus.
- drivers/i2c/tegra_i2c.c:
- - activate this driver with CONFIG_SYS_I2C_TEGRA
- - This driver adds 4 i2c buses with a fix speed from
- 100000 and the slave addr 0!
+ - activate this driver with CONFIG_SYS_I2C_TEGRA
+ - This driver adds 4 i2c buses with a fix speed from
+ 100000 and the slave addr 0!
- drivers/i2c/ppc4xx_i2c.c
- activate this driver with CONFIG_SYS_I2C_PPC4XX
- CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0
- CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1
+ - drivers/i2c/i2c_mxc.c
+ - activate this driver with CONFIG_SYS_I2C_MXC
+ - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED
+ - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE
+ - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED
+ - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE
+ - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED
+ - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE
+ If thoses defines are not set, default value is 100000
+ for speed, and 0 for slave.
+
+ - drivers/i2c/rcar_i2c.c:
+ - activate this driver with CONFIG_SYS_I2C_RCAR
+ - This driver adds 4 i2c buses
+
+ - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0
+ - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0
+ - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1
+ - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1
+ - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2
+ - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2
+ - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3
+ - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3
+ - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses
+
additional defines:
CONFIG_SYS_NUM_I2C_BUSES
CONFIG_TPL_PAD_TO
Image offset to which the TPL should be padded before appending
the TPL payload. By default, this is defined as
- CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined.
- CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL
- payload without any padding, or >= CONFIG_SPL_MAX_SIZE.
+ CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined.
+ CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL
+ payload without any padding, or >= CONFIG_SPL_MAX_SIZE.
Modem Support:
--------------
the Linux kernel; all data that must be processed by
the Linux kernel (bd_info, boot arguments, FDT blob if
used) must be put below this limit, unless "bootm_low"
- enviroment variable is defined and non-zero. In such case
+ environment variable is defined and non-zero. In such case
all data for the Linux kernel must be between "bootm_low"
and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment
variable "bootm_mapsize" will override the value of
- CONFIG_ENV_FLAGS_LIST_DEFAULT
- CONFIG_ENV_FLAGS_LIST_STATIC
- Enable validation of the values given to enviroment variables when
+ Enable validation of the values given to environment variables when
calling env set. Variables can be restricted to only decimal,
hexadecimal, or boolean. If CONFIG_CMD_NET is also defined,
the variables can also be restricted to IP address or MAC address.