Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/29319
Change subject: Documentation: Improve payload fit ......................................................................
Documentation: Improve payload fit
* Convert '' to ` * Add example how to use mkimage
Change-Id: Id83db3db51582cb0d6ded7f3152b5549fba1f2e7 Signed-off-by: Patrick Rudolph siro@das-labor.org --- M Documentation/lib/payloads/fit.md 1 file changed, 16 insertions(+), 5 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/19/29319/1
diff --git a/Documentation/lib/payloads/fit.md b/Documentation/lib/payloads/fit.md index ac7b3e6..53be92e 100644 --- a/Documentation/lib/payloads/fit.md +++ b/Documentation/lib/payloads/fit.md @@ -25,7 +25,7 @@
The FIT parser needs architecure support. ### aarch64 -The source code can be found in ''src/arch/arm64/fit.c''. +The source code can be found in `src/arch/arm64/fit.c`.
On aarch64 the kernel (a section named 'kernel') must be in **Image** format and it needs a devicetree (a section named 'fdt') to boot. @@ -83,7 +83,7 @@
## Building FIT image
-The FIT image has to be built by calling ''mkimage''. You can use +The FIT image has to be built by calling `mkimage`. You can use the following example configuration:
``` @@ -148,9 +148,20 @@ }; ```
-It includes a compressed initrd **initramfs.cpio.xz**, which will be -decompressed by the Linux kernel, a compressed kernel **Image.lzma**, which will -be decompressed by the FIT loader and an uncompressed devicetree blob. +Save it as ITS file `config.its` along with the other files defined here: +* target.dtb +* initramfs.cpio.xz +* Image.lzma + +Generate the `uImage` that will be included into the CBFS by calling + +```bash +mkimage -f config.its uImage +``` + +The generated file includes a compressed initrd **initramfs.cpio.xz**, which +will be decompressed by the Linux kernel, a compressed kernel **Image.lzma**, +which will be decompressed by the FIT loader and an uncompressed devicetree blob.
[uImage.FIT]: https://raw.githubusercontent.com/u-boot/u-boot/master/doc/uImage.FIT/howto.... [U-Boot]: https://www.denx.de/wiki/U-Boot