"working". In fact, many of them are used in production systems.
In case of problems see the CHANGELOG and CREDITS files to find out
-who contributed the specific port. The MAINTAINERS file lists board
+who contributed the specific port. The boards.cfg file lists board
maintainers.
Note: There is no CHANGELOG file in the actual U-Boot source tree;
/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:
This is the value to write into CCSR offset 0x18600
according to the A004510 workaround.
+ CONFIG_SYS_FSL_DSP_DDR_ADDR
+ This value denotes start offset of DDR memory which is
+ connected exclusively to the DSP cores.
+
CONFIG_SYS_FSL_DSP_M2_RAM_ADDR
This value denotes start offset of M2 memory
which is directly connected to the DSP core.
+ CONFIG_SYS_FSL_DSP_M3_RAM_ADDR
+ This value denotes start offset of M3 memory which is directly
+ connected to the DSP core.
+
CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT
This value denotes start offset of DSP CCSR space.
+ CONFIG_SYS_FSL_DDR_EMU
+ Specify emulator support for DDR. Some DDR features such as
+ deskew training are not available.
+
- Generic CPU options:
CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN
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
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
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.
+
- Signing support:
CONFIG_RSA
Support for NAND boot using simple NAND drivers that
expose the cmd_ctrl() interface.
+ CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
+ Set for the SPL on PPC mpc8xxx targets, support for
+ arch/powerpc/cpu/mpc8xxx/ddr/libddr.o in SPL binary.
+
+ CONFIG_SPL_COMMON_INIT_DDR
+ Set for common ddr init with serial presence detect in
+ SPL binary.
+
CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT,
CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE,
CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS,
option to re-enable it. This will affect the output of the
bootm command when booting a FIT image.
+- TPL framework
+ CONFIG_TPL
+ Enable building of TPL globally.
+
+ 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.
+
Modem Support:
--------------
that is executed before the actual U-Boot. E.g. when
compiling a NAND SPL.
+- CONFIG_TPL_BUILD
+ Modifies the behaviour of start.S when compiling a loader
+ that is executed after the SPL and before the actual U-Boot.
+ It is loaded by the SPL.
+
- CONFIG_SYS_MPC85XX_NO_RESETVEC
Only for 85xx systems. If this variable is specified, the section
.resetvec is not kept and the section .bootpg is placed in the
npe_ucode - set load address for the NPE microcode
+ silent_linux - If set then linux will be told to boot silently, by
+ changing the console to be empty. If "yes" it will be
+ made silent. If "no" it will not be made silent. If
+ unset, then it will be made silent if the U-Boot console
+ is silent.
+
tftpsrcport - If this is set, the value is used for TFTP's
UDP source port.
* For major contributions, your entry to the CREDITS file
-* When you add support for a new board, don't forget to add this
- board to the MAINTAINERS file, too.
+* When you add support for a new board, don't forget to add a
+ maintainer e-mail address to the boards.cfg file, too.
* If your patch adds new configuration options, don't forget to
document these in the README file.
projects / karo-tx-uboot.git / blobdiff