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| author | Teddy Reed <teddy.reed@gmail.com> | 2016-06-09 19:38:02 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-06-24 17:23:06 -0400 |
| commit | f8f9107d97b849afe69ca86e7abd8d1748ea7acd (patch) | |
| tree | b210c79fc53f0459b0af6cecb90d7c1cdc1f3016 /doc | |
| parent | 92dfd9221c97265ff303bf9437481b9767bd72ea (diff) | |
| download | u-boot-f8f9107d97b849afe69ca86e7abd8d1748ea7acd.tar.gz | |
mkimage: fit: spl: Add an optional static offset for external data
When building a FIT with external data (-E), U-Boot proper may require
absolute positioning for executing the external firmware. To acheive this
use the (-p) switch, which will replace the amended 'data-offset' with
'data-position' indicating the absolute position of external data.
It is considered an error if the requested absolute position overlaps with the
initial data required for the compact FIT.
Signed-off-by: Teddy Reed <teddy.reed@gmail.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/mkimage.1 | 6 | ||||
| -rw-r--r-- | doc/uImage.FIT/source_file_format.txt | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/doc/mkimage.1 b/doc/mkimage.1 index 4b3a255255..ffa7d60156 100644 --- a/doc/mkimage.1 +++ b/doc/mkimage.1 @@ -152,6 +152,12 @@ verification. Typically the file here is the device tree binary used by CONFIG_OF_CONTROL in U-Boot. .TP +.BI "\-p [" "external position" "]" +Place external data at a static external position. See \-E. Instead of writing +a 'data-offset' property defining the offset from the end of the FIT, \-p will +use 'data-position' as the absolute position from the base of the FIT. + +.TP .BI "\-r Specifies that keys used to sign the FIT are required. This means that they must be verified for the image to boot. Without this option, the verification diff --git a/doc/uImage.FIT/source_file_format.txt b/doc/uImage.FIT/source_file_format.txt index 3f5418045e..91aa89a77e 100644 --- a/doc/uImage.FIT/source_file_format.txt +++ b/doc/uImage.FIT/source_file_format.txt @@ -282,6 +282,9 @@ In this case the 'data' property is omitted. Instead you can use: aligned to a 4-byte boundary. - data-size : size of the data in bytes +The 'data-offset' property can be substituted with 'data-position', which +defines an absolute position or address as the offset. This is helpful when +booting U-Boot proper before performing relocation. 9) Examples ----------- |