Repurpose the existing EFI earlyprintk code to implement support for 'earlycon=efi' for arm64 systems, allowing the graphical console to be used instead of the serial port for early debug output. Ard Biesheuvel (2): efi: x86: move EFI earlyprintk code to shared location efi: arm64: Enable earlycon for the GOP framebuffer Documentation/admin-guide/kernel-parameters.txt | 9 ++- arch/arm64/include/asm/efi.h | 6 ++ arch/x86/Kconfig.debug | 2 +- arch/x86/include/asm/efi.h | 6 ++ arch/x86/platform/efi/Makefile | 1 - drivers/firmware/efi/Kconfig | 5 ++ drivers/firmware/efi/Makefile | 1 + arch/x86/platform/efi/early_printk.c => drivers/firmware/efi/earlycon.c | 62 ++++++++++++++------ 8 files changed, 70 insertions(+), 22 deletions(-) rename arch/x86/platform/efi/early_printk.c => drivers/firmware/efi/earlycon.c (76%) -- 2.20.1
