The ChromiumOS bootmeth is fairly basic at present. It is able to boot only x86 kernels and contains quite a few hard-coded offsets.
This series tidies it up by bringing in some vboot structures and adding support for ARM.
It adds a few more features to bootstd, including display of x86 setup information.
So far this does not actually boot correctly on any ARM Chromebook:
jerry - hangs when booting kernel bob - Bad Linux ARM64 Image magic! with lz4-compressed kernel
Further work can address these issues.
Simon Glass (16): bootstd: cros: Correct reporting of I/O errors bootstd: cros: Move partition reading into a function bootstd: cros: Bring in some ChromiumOS structures bootstd: cros: Support a kernel on either partition bootstd: cros: Decode some kernel preamble fields bootstd: cros: Simplify setup and cmdline expressions bootstd: Move common zimage functions to bootm.h bootstd: cros: Add docs for the kernel layout bootstd: cros: Add private info for ChromiumOS bootstd: Add private bootmeth data to the bootflow bootstd: cros: Add a function to read info from partition bootstd: cros: Add a function to read a kernel bootstd: cros: Split up reading info and kernel bootstd: Allow display of the x86 setup information bootstd: Add a command to read all files for a bootflow bootstd: cros: Add ARM support
arch/x86/include/asm/zimage.h | 37 ---- arch/x86/lib/zimage.c | 8 +- boot/Kconfig | 4 +- boot/bootflow.c | 15 ++ boot/bootm.c | 37 ++++ boot/bootmeth-uclass.c | 10 + boot/bootmeth_cros.c | 363 ++++++++++++++++++++++++++++------ boot/bootmeth_cros.h | 197 ++++++++++++++++++ cmd/bootflow.c | 47 ++++- doc/usage/cmd/bootflow.rst | 139 ++++++++++++- include/bootflow.h | 15 +- include/bootm.h | 47 +++++ include/bootmeth.h | 23 +++ 13 files changed, 836 insertions(+), 106 deletions(-) create mode 100644 boot/bootmeth_cros.h