From: Simon Goldschmidt Date: Mon, 30 Jul 2018 10:53:18 +0000 (+0200) Subject: doc: FIT image: clarify usage of "compression" property X-Git-Tag: v2018.09-rc2~44 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=fd15a9e2565f831bf95c2152d1966d068a642175;p=oweals%2Fu-boot.git 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 --- 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