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author | Tom Rini <trini@konsulko.com> | 2018-09-30 18:16:51 -0400 |
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committer | Tom Rini <trini@konsulko.com> | 2018-09-30 18:16:51 -0400 |
commit | d24c1d0f4da3b081a4fedf7ae2a08790871f08d0 (patch) | |
tree | 30051c24000bbb640b6296c8a71a8e05f0cc06e4 /tools/binman/README | |
parent | 2c1e16b9d2e3a6138acf4ffd9866e47ddbe6d453 (diff) | |
parent | 31b8217e83a63d1c8c70edcdcdf5aff3b1791640 (diff) |
Merge git://git.denx.de/u-boot-dm
Diffstat (limited to 'tools/binman/README')
-rw-r--r-- | tools/binman/README | 49 |
1 files changed, 40 insertions, 9 deletions
diff --git a/tools/binman/README b/tools/binman/README index 5062f30ca3..b64dedf2eb 100644 --- a/tools/binman/README +++ b/tools/binman/README @@ -330,9 +330,13 @@ image-pos: for each entry. This makes it easy to find out exactly where the entry ended up in the image, regardless of parent sections, etc. +expand-size: + Expand the size of this entry to fit available space. This space is only + limited by the size of the image/section and the position of the next + entry. -The attributes supported for images are described below. Several are similar -to those for entries. +The attributes supported for images and sections are described below. Several +are similar to those for entries. size: Sets the image size in bytes, for example 'size = <0x100000>' for a @@ -471,15 +475,26 @@ see README.entries. This is generated from the source code using: binman -E >tools/binman/README.entries -Special properties ------------------- +Hashing Entries +--------------- -Some entries support special properties, documented here: +It is possible to ask binman to hash the contents of an entry and write that +value back to the device-tree node. For example: -u-boot-with-ucode-ptr: - optional-ucode: boolean property to make microcode optional. If the - u-boot.bin image does not include microcode, no error will - be generated. + binman { + u-boot { + hash { + algo = "sha256"; + }; + }; + }; + +Here, a new 'value' property will be written to the 'hash' node containing +the hash of the 'u-boot' entry. Only SHA256 is supported at present. Whole +sections can be hased if desired, by adding the 'hash' node to the section. + +The has value can be chcked at runtime by hashing the data actually read and +comparing this has to the value in the device tree. Order of image creation @@ -613,6 +628,22 @@ the device tree. These can be used by U-Boot at run-time to find the location of each entry. +Compression +----------- + +Binman support compression for 'blob' entries (those of type 'blob' and +derivatives). To enable this for an entry, add a 'compression' property: + + blob { + filename = "datafile"; + compression = "lz4"; + }; + +The entry will then contain the compressed data, using the 'lz4' compression +algorithm. Currently this is the only one that is supported. + + + Map files --------- |