linux_dsm_epyc7002/drivers/firmware/efi
Ard Biesheuvel 69c1f396f2 efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation
Move the x86 EFI earlyprintk implementation to a shared location under
drivers/firmware and tweak it slightly so we can expose it as an earlycon
implementation (which is generic) rather than earlyprintk (which is only
implemented for a few architectures)

This also involves switching to write-combine mappings by default (which
is required on ARM since device mappings lack memory semantics, and so
memcpy/memset may not be used on them), and adding support for shared
memory framebuffers on cache coherent non-x86 systems (which do not
tolerate mismatched attributes).

Note that 32-bit ARM does not populate its struct screen_info early
enough for earlycon=efifb to work, so it is disabled there.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Alexander Graf <agraf@suse.de>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190202094119.13230-10-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-02-04 08:27:30 +01:00
..
libstub efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted 2019-02-04 08:27:26 +01:00
test efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
apple-properties.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
arm-init.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
arm-runtime.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
capsule-loader.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
capsule.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
cper-arm.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
cper-x86.c efi: Decode IA32/X64 Context Info structure 2018-05-14 08:57:48 +02:00
cper.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
dev-path-parser.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
earlycon.c efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation 2019-02-04 08:27:30 +01:00
efi-bgrt.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
efi-pstore.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
efi.c efi: Reduce the amount of memblock reservations for persistent allocations 2018-11-30 09:37:57 +01:00
efibc.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
efivars.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
esrt.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
fake_mem.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
Kconfig efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation 2019-02-04 08:27:30 +01:00
Makefile efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation 2019-02-04 08:27:30 +01:00
memattr.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
memmap.c efi/arm: Revert deferred unmap of early memmap mapping 2018-11-15 10:04:46 +01:00
reboot.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
runtime-map.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
runtime-wrappers.c efi: Fix debugobjects warning on 'efi_rts_work' 2018-11-15 10:04:45 +01:00
tpm.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
vars.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00