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7 Commits
Author SHA1 Message Date
Sven Schnelle ea46a13ebf kexec_elf: support 32 bit ELF files 
The powerpc version only supported 64 bit. Add some
code to switch decoding of fields during runtime so
we can kexec a 32 bit kernel from a 64 bit kernel and
vice versa.

Signed-off-by: Sven Schnelle <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
 2019-09-06 23:58:44 +02:00
Sven Schnelle 571ceb7d96 kexec_elf: remove unused variable in kexec_elf_load() 
base was never assigned, so we can remove it.

Reviewed-by: Christophe Leroy <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Sven Schnelle <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
 2019-09-06 23:58:44 +02:00
Sven Schnelle 3bd9c3366e kexec_elf: remove Elf_Rel macro 
It wasn't used anywhere, so lets drop it.

Reviewed-by: Christophe Leroy <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Sven Schnelle <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
 2019-09-06 23:58:43 +02:00
Sven Schnelle 10ba459f87 kexec_elf: remove PURGATORY_STACK_SIZE 
It's not used anywhere so just drop it.

Signed-off-by: Sven Schnelle <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
 2019-09-06 23:58:43 +02:00
Sven Schnelle 5f71d97720 kexec_elf: remove parsing of section headers 
We're not using them, so we can drop the parsing.

Signed-off-by: Sven Schnelle <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
 2019-09-06 23:58:43 +02:00
Sven Schnelle d34e0ad3ea kexec_elf: change order of elf_*_to_cpu() functions 
Change the order to have a 64/32/16 order, no functional change.

Signed-off-by: Sven Schnelle <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
 2019-09-06 23:58:43 +02:00
Sven Schnelle 175fca3bf9 kexec: add KEXEC_ELF 
Right now powerpc provides an implementation to read elf files
with the kexec_file_load() syscall. Make that available as a public
kexec interface so it can be re-used on other architectures.

Signed-off-by: Sven Schnelle <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
 2019-09-06 23:58:43 +02:00