EFI changes

This is a respin of the EFI earlyprintk support with the fix for the allmodconfig build breakage that Ingo reported.

The following changes since commit c158c3bf59951bbb44bd7ccca9e6665dfd1617c5:

boot, efi: Remove redundant memset() (2013-10-04 20:07:47 +0100)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git tags/efi-next

for you to fetch changes up to 265434a91cf3377d65dc2b6d80065271514b5696:

x86/efi: Add EFI framebuffer earlyprintk support (2013-10-28 11:57:58 +0000)

----------------------------------------------------------------
* Add support for earlyprintk=efi which uses the EFI framebuffer. Very useful for debugging boot issues.

----------------------------------------------------------------
Matt Fleming (2):
efi: Add asm-generic/efi.h for non-x86 x86/efi: Add EFI framebuffer earlyprintk support

 Documentation/kernel-parameters.txt  |   8 +-
 arch/ia64/include/asm/efi.h          |   6 ++
 arch/x86/Kconfig.debug               |  10 ++
 arch/x86/boot/compressed/eboot.c     |   1 -
 arch/x86/include/asm/efi.h           |  12 +++
 arch/x86/kernel/early_printk.c       |   6 ++
 arch/x86/kernel/setup.c              |   1 -
 arch/x86/platform/efi/Makefile       |   1 +
 arch/x86/platform/efi/early_printk.c | 191 +++++++++++++++++++++++++++++++++++
 arch/x86/platform/efi/efi.c          |   1 -
 arch/x86/platform/efi/efi_32.c       |   1 -

 arch/x86/platform/efi/efi_64.c       |   1 -
 arch/x86/platform/uv/bios_uv.c       |   1 -
 include/asm-generic/efi.h            |  17 ++++
 include/linux/efi.h                  |  31 +-----
 15 files changed, 250 insertions(+), 38 deletions(-)
 create mode 100644 arch/ia64/include/asm/efi.h
 create mode 100644 arch/x86/platform/efi/early_printk.c
 create mode 100644 include/asm-generic/efi.h

and this breaks the ARM build:

In file included from /home/mingo/tip/init/main.c:44:
/home/mingo/tip/include/linux/efi.h:842:21: error: asm/efi.h: No such file or directory /home/mingo/tip/init/main.c: In function 'start_kernel':
/home/mingo/tip/init/main.c:638: error: implicit declaration of function 'efi_enabled' /home/mingo/tip/init/main.c:639: error: implicit declaration of function 'efi_late_init' /home/mingo/tip/init/main.c:640: error: implicit declaration of function 'efi_free_boot_services'

Quoted 8 lines · Ingo Molnar

and this breaks the ARM build:

In file included from /home/mingo/tip/init/main.c:44:
/home/mingo/tip/include/linux/efi.h:842:21: error: asm/efi.h: No such file or directory /home/mingo/tip/init/main.c: In function 'start_kernel':
/home/mingo/tip/init/main.c:638: error: implicit declaration of function 'efi_enabled' /home/mingo/tip/init/main.c:639: error: implicit declaration of function 'efi_late_init' /home/mingo/tip/init/main.c:640: error: implicit declaration of function 'efi_free_boot_services'

Ah, that's my own fault because my 'next' branch doesn't include the ARM EFI support. Where did you get the patches from? Are they in linux-next?

I'm inclined to drop the cleanup patch for now and do it later, once things have settled because it's also causing conflicts for Borislav's work.

Quoted 10 lines · Matt Fleming

Quoted 8 lines · Ingo Molnar

and this breaks the ARM build:

In file included from /home/mingo/tip/init/main.c:44:
/home/mingo/tip/include/linux/efi.h:842:21: error: asm/efi.h: No such file or directory /home/mingo/tip/init/main.c: In function 'start_kernel':
/home/mingo/tip/init/main.c:638: error: implicit declaration of function 'efi_enabled' /home/mingo/tip/init/main.c:639: error: implicit declaration of function 'efi_late_init' /home/mingo/tip/init/main.c:640: error: implicit declaration of function 'efi_free_boot_services'

Quoted 3 lines

Ah, that's my own fault because my 'next' branch doesn't include the ARM EFI support. Where did you get the patches from? Are they in linux-next?

It's all in tip:x86/efi.

Quoted 3 lines

I'm inclined to drop the cleanup patch for now and do it later, once things have settled because it's also causing conflicts for Borislav's work.

Sure.

Quoted 19 lines · Ingo Molnar

Quoted 10 lines · Matt Fleming

Quoted 8 lines · Ingo Molnar

and this breaks the ARM build:

In file included from /home/mingo/tip/init/main.c:44:
/home/mingo/tip/include/linux/efi.h:842:21: error: asm/efi.h: No such file or directory /home/mingo/tip/init/main.c: In function 'start_kernel':
/home/mingo/tip/init/main.c:638: error: implicit declaration of function 'efi_enabled' /home/mingo/tip/init/main.c:639: error: implicit declaration of function 'efi_late_init' /home/mingo/tip/init/main.c:640: error: implicit declaration of function 'efi_free_boot_services'

Quoted 3 lines

Ah, that's my own fault because my 'next' branch doesn't include the ARM EFI support. Where did you get the patches from? Are they in linux-next?

It's all in tip:x86/efi.

Quoted 5 lines

Quoted 3 lines

I'm inclined to drop the cleanup patch for now and do it later, once things have settled because it's also causing conflicts for Borislav's work.

Sure.

OK, I've pushed out the 'next' branch and retagged it as 'efi-next' (again), which hopefully should be finally free from build errors.