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Subject[PATCH 8/9] arm64: enable KEXEC_FILE config
Date
Modify arm64/Kconfig and Makefile to enable kexec_file_load support.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
---
arch/arm64/Kconfig | 22 ++++++++++++++++++++++
arch/arm64/kernel/Makefile | 2 +-
2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index dfd908630631..fa7299f08cc6 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -756,6 +756,28 @@ config KEXEC
but it is independent of the system firmware. And like a reboot
you can start any kernel with it, not just Linux.

+config KEXEC_FILE
+ bool "kexec file based system call"
+ select KEXEC_CORE
+ select BUILD_BIN2C
+ ---help---
+ This is new version of kexec system call. This system call is
+ file based and takes file descriptors as system call argument
+ for kernel and initramfs as opposed to list of segments as
+ accepted by previous system call.
+
+ In addition to this option, you need to enable a specific type
+ of image support.
+
+config KEXEC_VERIFY_SIG
+ bool "Verify kernel signature during kexec_file_load() syscall"
+ depends on KEXEC_FILE
+ select SYSTEM_DATA_VERIFICATION
+ ---help---
+ Select this option to verify a signature with loaded kernel
+ image. If configured, any attempt of loading a image without
+ valid signature will fail.
+
config CRASH_DUMP
bool "Build kdump crash kernel"
help
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 16e9f56b536a..5df003d6157c 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -48,7 +48,7 @@ arm64-obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o
arm64-obj-$(CONFIG_PARAVIRT) += paravirt.o
arm64-obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
arm64-obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o
-arm64-obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o \
+arm64-obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o \
cpu-reset.o
arm64-obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o
arm64-obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o
--
2.14.1
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