forked from Minki/linux
2965faa5e0
There are two kexec load syscalls, kexec_load another and kexec_file_load. kexec_file_load has been splited as kernel/kexec_file.c. In this patch I split kexec_load syscall code to kernel/kexec.c. And add a new kconfig option KEXEC_CORE, so we can disable kexec_load and use kexec_file_load only, or vice verse. The original requirement is from Ted Ts'o, he want kexec kernel signature being checked with CONFIG_KEXEC_VERIFY_SIG enabled. But kexec-tools use kexec_load syscall can bypass the checking. Vivek Goyal proposed to create a common kconfig option so user can compile in only one syscall for loading kexec kernel. KEXEC/KEXEC_FILE selects KEXEC_CORE so that old config files still work. Because there's general code need CONFIG_KEXEC_CORE, so I updated all the architecture Kconfig with a new option KEXEC_CORE, and let KEXEC selects KEXEC_CORE in arch Kconfig. Also updated general kernel code with to kexec_load syscall. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Dave Young <dyoung@redhat.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Petr Tesarik <ptesarik@suse.cz> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Josh Boyer <jwboyer@fedoraproject.org> Cc: David Howells <dhowells@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
72 lines
2.0 KiB
Plaintext
72 lines
2.0 KiB
Plaintext
menu "EFI (Extensible Firmware Interface) Support"
|
|
depends on EFI
|
|
|
|
config EFI_VARS
|
|
tristate "EFI Variable Support via sysfs"
|
|
depends on EFI
|
|
default n
|
|
help
|
|
If you say Y here, you are able to get EFI (Extensible Firmware
|
|
Interface) variable information via sysfs. You may read,
|
|
write, create, and destroy EFI variables through this interface.
|
|
|
|
Note that using this driver in concert with efibootmgr requires
|
|
at least test release version 0.5.0-test3 or later, which is
|
|
available from:
|
|
<http://linux.dell.com/efibootmgr/testing/efibootmgr-0.5.0-test3.tar.gz>
|
|
|
|
Subsequent efibootmgr releases may be found at:
|
|
<http://github.com/vathpela/efibootmgr>
|
|
|
|
config EFI_ESRT
|
|
bool
|
|
depends on EFI && !IA64
|
|
default y
|
|
|
|
config EFI_VARS_PSTORE
|
|
tristate "Register efivars backend for pstore"
|
|
depends on EFI_VARS && PSTORE
|
|
default y
|
|
help
|
|
Say Y here to enable use efivars as a backend to pstore. This
|
|
will allow writing console messages, crash dumps, or anything
|
|
else supported by pstore to EFI variables.
|
|
|
|
config EFI_VARS_PSTORE_DEFAULT_DISABLE
|
|
bool "Disable using efivars as a pstore backend by default"
|
|
depends on EFI_VARS_PSTORE
|
|
default n
|
|
help
|
|
Saying Y here will disable the use of efivars as a storage
|
|
backend for pstore by default. This setting can be overridden
|
|
using the efivars module's pstore_disable parameter.
|
|
|
|
config EFI_RUNTIME_MAP
|
|
bool "Export efi runtime maps to sysfs"
|
|
depends on X86 && EFI && KEXEC_CORE
|
|
default y
|
|
help
|
|
Export efi runtime memory maps to /sys/firmware/efi/runtime-map.
|
|
That memory map is used for example by kexec to set up efi virtual
|
|
mapping the 2nd kernel, but can also be used for debugging purposes.
|
|
|
|
See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map.
|
|
|
|
config EFI_PARAMS_FROM_FDT
|
|
bool
|
|
help
|
|
Select this config option from the architecture Kconfig if
|
|
the EFI runtime support gets system table address, memory
|
|
map address, and other parameters from the device tree.
|
|
|
|
config EFI_RUNTIME_WRAPPERS
|
|
bool
|
|
|
|
config EFI_ARMSTUB
|
|
bool
|
|
|
|
endmenu
|
|
|
|
config UEFI_CPER
|
|
bool
|