[v2,0/5] kexec_file_load() for arm

Message

Łukasz Stelmach June 2, 2020, 4:17 p.m. UTC

The following series of patches provides implementation of the
kexec_file_load() system call form the arm architecture. zImage and uImage
(legacy format) files are supported. Like on arm64, there is no
possibility of loading a new DTB and the currently loaded is reused.

Changes in v2:
  - add CONFIG_KEXEC_FILE_UIMAGE for optional uImage support
  - MALLOC_SIZE as a define instead of a symbol
  - DCSZ tag holds combined dynamic memory requirements (bss+stack+malloc)
  - use union for a single tag structure
  - copyright notice includes Russell King

Łukasz Stelmach (5):
  arm: decompressor: set malloc pool size for the decompressor
  arm: add image header definitions
  arm: decompressor: define a new zImage tag
  arm: Add kexec_image_info
  arm: kexec_file: load zImage or uImage, initrd and dtb

 arch/arm/Kconfig                       |  25 +++
 arch/arm/boot/compressed/Makefile      |   7 +-
 arch/arm/boot/compressed/head.S        |   9 +-
 arch/arm/boot/compressed/vmlinux.lds.S |  22 +--
 arch/arm/include/asm/image.h           |  77 +++++++++
 arch/arm/include/asm/kexec.h           |  14 ++
 arch/arm/kernel/Makefile               |   5 +-
 arch/arm/kernel/kexec_uimage.c         |  80 ++++++++++
 arch/arm/kernel/kexec_zimage.c         | 194 +++++++++++++++++++++++
 arch/arm/kernel/machine_kexec.c        |  39 ++++-
 arch/arm/kernel/machine_kexec_file.c   | 211 +++++++++++++++++++++++++
 11 files changed, 662 insertions(+), 21 deletions(-)
 create mode 100644 arch/arm/include/asm/image.h
 create mode 100644 arch/arm/kernel/kexec_uimage.c
 create mode 100644 arch/arm/kernel/kexec_zimage.c
 create mode 100644 arch/arm/kernel/machine_kexec_file.c