[PATCH 1/9] arm64/efi: split off EFI init and runtime code for reuse by 32-bit ARM

[matt@codeblueprint.co.uk (Matt Fleming)]

On Thu, 01 Oct, at 07:04:15PM, Ard Biesheuvel wrote:
> This splits off the early EFI init and runtime code that
> - discovers the EFI params and the memory map from the FDT, and installs
>   the memblocks and config tables.
> - prepares and installs the EFI page tables so that UEFI Runtime Services
>   can be invoked at the virtual address installed by the stub.
> 
> This will allow it to be reused for 32-bit ARM.
> 
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> ---
>  arch/arm64/kernel/efi.c            | 363 +-------------------
>  drivers/firmware/efi/Makefile      |   4 +-
>  drivers/firmware/efi/arm-init.c    | 214 ++++++++++++
>  drivers/firmware/efi/arm-runtime.c | 191 ++++++++++
>  4 files changed, 409 insertions(+), 363 deletions(-)

[...]

> +static int uefi_debug __initdata;
> +static int __init uefi_debug_setup(char *str)
> +{
> +	uefi_debug = 1;
> +
> +	return 0;
> +}
> +early_param("uefi_debug", uefi_debug_setup);

Was this hunk an unintentional reintroduction of the code Leif deleted
in commit a9cc0cf5701b ("arm64: Use core efi=debug instead of
uefi_debug command line parameter")?

-- 
Matt Fleming, Intel Open Source Technology Center