Hi Simon, sorry for the delay. I broke something and wanted to make sure that whatever I sent is working. I'm sending the whole series which should be bisectable and care about HAVE_LIBZ. Patch 6 splits my uImage handling and 7 reuses it for SH and ARM. This is only compile tested for ARM. The only benefit is that with libz it will be crc32 tested. The whole series is also at git://git.breakpoint.cc/bigeasy/kexec-tools.git ppc32 Sebastian