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| author | Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com> | 2018-07-30 12:53:18 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-08-10 13:45:33 -0400 |
| commit | fd15a9e2565f831bf95c2152d1966d068a642175 (patch) | |
| tree | a3123c65428fdd7e7187a0ea85bc7300b100a29f | |
| parent | ea975fe16b3e8d1f7236b2593ac05010201c282f (diff) | |
| download | u-boot-fd15a9e2565f831bf95c2152d1966d068a642175.tar.gz u-boot-fd15a9e2565f831bf95c2152d1966d068a642175.tar.bz2 u-boot-fd15a9e2565f831bf95c2152d1966d068a642175.zip | |
doc: FIT image: clarify usage of "compression" property
Compressed images should have their compression property
set to "none" if U-Boot should leave them compressed.
This is especially the case for compressed ramdisks that
should be uncompressed by the kernel only.
Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
| -rw-r--r-- | doc/uImage.FIT/source_file_format.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/uImage.FIT/source_file_format.txt b/doc/uImage.FIT/source_file_format.txt index d2793a195d..d701b9bb76 100644 --- a/doc/uImage.FIT/source_file_format.txt +++ b/doc/uImage.FIT/source_file_format.txt @@ -164,7 +164,9 @@ the '/images' node should have the following layout: - data : Path to the external file which contains this node's binary data. - compression : Compression used by included data. Supported compressions are "gzip" and "bzip2". If no compression is used compression property - should be set to "none". + should be set to "none". If the data is compressed but it should not be + uncompressed by U-Boot (e.g. compressed ramdisk), this should also be set + to "none". Conditionally mandatory property: - os : OS name, mandatory for types "kernel" and "ramdisk". Valid OS names |