u-boot/doc/uImage.FIT
Kever Yang ebfe611be9 mkimage: fit_image: Add option to make fit header align
The image is usually stored in block device like emmc, SD card, make the
offset of image data aligned to block(512 byte) can avoid data copy
during boot process.
eg. SPL boot from FIT image with external data:
- SPL read the first block of FIT image, and then parse the header;
- SPL read image data separately;
- The first image offset is the base_offset which is the header size;
- The second image offset is just after the first image;
- If the offset of imge does not aligned, SPL will do memcpy;
The header size is a ramdon number, which is very possible not aligned, so
add '-B size'to specify the align size in hex for better performance.

example usage:
  ./tools/mkimage -E -f u-boot.its -B 0x200 u-boot.itb

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp>
Reviewed-by: Tom Rini <trini@konsulko.com>
2020-04-24 10:10:01 -04:00
..
beaglebone_vboot.txt doc: FIT image: fix typo 2018-08-20 07:21:29 -04:00
command_syntax_extensions.txt doc: FIT image: fix incorrect description of DT node unit address 2018-01-15 18:29:21 -07:00
howto.txt doc: FIT image: fix incorrect description of DT node unit address 2018-01-15 18:29:21 -07:00
kernel.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
kernel_fdt.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
kernel_fdts_compressed.its fit: Support compat string property in configuration node 2019-07-29 09:32:08 -04:00
multi-with-fpga.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
multi-with-loadables.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
multi.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
multi_spl.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
overlay-fdt-boot.txt doc: FIT image: fix incorrect description of DT node unit address 2018-01-15 18:29:21 -07:00
sec_firmware_ppa.its armv8: sec_firmware: Add support for multiple loadables 2018-05-09 09:17:51 -05:00
sign-configs.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
sign-images.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
signature.txt doc: fitImage: example of a signature node 2019-12-13 13:01:53 -05:00
source_file_format.txt mkimage: fit_image: Add option to make fit header align 2020-04-24 10:10:01 -04:00
uefi.its doc: Add sample uefi.its image description file 2020-01-07 18:08:21 +01:00
update3.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
update_uboot.its doc: FIT image: fix incorrect examples of DT node unit address 2018-01-15 18:29:21 -07:00
verified-boot.txt doc: verified-boot: fix typos 2017-08-26 14:56:14 -04:00
x86-fit-boot.txt doc: FIT image: fix incorrect description of DT node unit address 2018-01-15 18:29:21 -07:00