Hello,

I configured for kernel XIP and created xipImage. When I tried to load it through u-boot, it complained about invalid magic number. Later I added a 64 byte header required for u-boot with the following mkimage command:

mkimage -A arm -O linux -T kernel -C none -a 0x00080000 -e 0x00080040 -d xipImage XIPImage.

Actually some of the document found at CELF wiki specifies that we need to give "-x" option to mkimage. With -x option, mkimage fails with the following error message :

mkimage: Bad file: "xipImage" has invalid buffer for XIP.

After looking into the mkimage source code, found that it expects 0xFF for the first 64 bytes of xipImage. Which is missing in the xipImage I have built. There must be some in-consistency between the way xipImage is built or mkimage command.

Also, I didn't find any significance of the code for "-x" if we specify the "entry point" correctly (load address + 0x40).

After the mkimage, I flashed the XIPImage at address 0x00080000. After resetting the board, I got the following boot messages :

## Booting image at 00080000 ... Image Name: Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 2009016 Bytes = 1.9 MB Load Address: 00080000 Entry Point: 00080040 Verifying Checksum ... OK XIP Kernel Image ... OK

Starting kernel ...

And it stops here....

Any idea what is going wrong here ?

My configuration:

Processor : ARM926EJ-Sid(wb) rev 3 (v5l) Kernel : 2.6.10

Regards Shivappa