Hi,
A zImage is ppc64 elf executable file containing an elf section
".kernel:vmlinux.strip" in which a vmlinux file is compressed.
The support for such files is simply added by detecting the
".kernel:vmlinux.strip" section when a ppc64 executable is loaded.
If found, the embedded vmlinux file is uncompressed and loaded
in lieu of the original zImage file.
Patch 1 adds a simple helper routine to look for a section. Patch 2
adds a proposal to bypass the check on the interp program header
which is needed for zImage files on little endian. Patch 3 adds the
core funtionnality and the final patches are ppc64 compile cleanups
which poluted output.
Also available here :
https://github.com/legoater/kexec-tools zimage
Comments are welcome !
Thanks
C.
C?dric Le Goater (7):
kexec: add a elf_rel_find_section service
kexec: bypass check on interp program header for ppc64le zImage
ppc64: detect zImage files and load the uncompressed vmlinux
ppc64, cleanup: cmdline_len variables are unused
ppc64, cleanup: remove dead code in kexec-zImage-ppc64
ppc64, cleanup: fix implicit declaration compile warnings
ppc64, cleanup: fix unused variable compile warning
kexec/arch/arm/kexec-elf-rel-arm.c | 5 +
kexec/arch/cris/kexec-elf-rel-cris.c | 5 +
kexec/arch/i386/kexec-elf-rel-x86.c | 5 +
kexec/arch/ia64/kexec-elf-rel-ia64.c | 5 +
kexec/arch/m68k/kexec-elf-rel-m68k.c | 5 +
kexec/arch/mips/kexec-elf-rel-mips.c | 5 +
kexec/arch/ppc/kexec-elf-rel-ppc.c | 5 +
kexec/arch/ppc64/crashdump-ppc64.c | 3 +-
kexec/arch/ppc64/kexec-elf-ppc64.c | 23 +++-
kexec/arch/ppc64/kexec-elf-rel-ppc64.c | 35 +++--
kexec/arch/ppc64/kexec-ppc64.c | 1 +
kexec/arch/ppc64/kexec-ppc64.h | 2 +
kexec/arch/ppc64/kexec-zImage-ppc64.c | 214 ++++++++++++++----------------
kexec/arch/s390/kexec-elf-rel-s390.c | 5 +
kexec/arch/sh/kexec-elf-rel-sh.c | 5 +
kexec/arch/x86_64/kexec-elf-rel-x86_64.c | 5 +
kexec/kexec-elf-exec.c | 4 +
kexec/kexec-elf-rel.c | 17 +++
kexec/kexec-elf.h | 3 +
19 files changed, 208 insertions(+), 144 deletions(-)
--
1.7.10.4
