Initial EFI Support

Jean-Christophe PLAGNIOL-VILLARD plagnioj at jcrosoft.com
Tue Jul 8 03:04:07 PDT 2014


Hi,

	as tested with Sascha

	you can run it from qemu (more easy to debug)

	first you will need an EFI binary
	you can use this one
	http://ufpr.dl.sourceforge.net/project/edk2/OVMF/OVMF-X64-r15214.zip

	and then you need to create a vfat FS

	dd if=/dev/zero bs=1M count=10 > dosfs; mkfs.vfat dosfs

	in the dosfs mounted copy the barebox.efi in /EFI/BOOT/ as BOOTx64.efi

	and finally the magic

	qemu-system-x86_64 -pflash OVMF.fd -nographic dosfs

Best Regards,
J.
On 10:49 Tue 08 Jul     , Sascha Hauer wrote:
> 
> The following adds initial support for running barebox as an EFI
> payload on X86 PCs.
> 
> Several things are implemented already to make it useful and
> to look around in an EFI system:
> 
> - Simple Network Protocol for networking
> - Start applications for installing drivers and starting Linux
> - Access EFI provided filesystems
> - Block device access
> 
> The EFI Port still has some rough edges. The screen output is limited
> to 80x25 and the keyboard driver doesn't recognize ctrl-C. I couldn't
> get find a proper UEFI serial driver yet, so the serial port is accessed
> via inb/outb on ioport 0x3f8 and not via UEFI.
> 
> For those interested in EFI and X86 hardware this port still offers
> some interesting insights in EFI.
> 
> There's also even Documentation available, see Patch 16/21.
> 
> Sascha
> 
> ----------------------------------------------------------------
> Sascha Hauer (21):
>       Make IPaddr_t a 32bit type
>       oftree command: Use size_t for size
>       fat: Use correct format specifier
>       readkey: keys are unsugned char
>       of: platform: Use PRINTF_CONVERSION_RESOURCE for printing resources
>       console: Add puts callback to console devices
>       Add hex_byte_pack and hex_byte_pack_upper from kernel
>       vsprintf: Support pU for printing UUIDs
>       Add beginning wchar support
>       block: Add flush callback
>       Move efi.h to include/
>       filetype: Add DOS EXE file detection support
>       efi: Add more error codes
>       serial: ns16550: Add mmiobase to private data
>       serial: ns16550: Add register read/write function pointers to private data
>       Documentation: Add EFI documentation
>       Add initial EFI architecture support
>       net: Add EFI Simple Network Protocol Driver
>       serial: Add EFI stdio driver
>       fs: implement EFI filesystem driver
>       fs: implement EFI variable filesystem driver
> 
>  Documentation/boards/efi.rst               |  279 ++++++
>  Documentation/glossary.rst                 |    3 +
>  arch/efi/Kconfig                           |   47 +
>  arch/efi/Makefile                          |   41 +
>  arch/efi/configs/efi_defconfig             |   73 ++
>  arch/efi/efi/Makefile                      |    2 +
>  arch/efi/efi/clocksource.c                 |   60 ++
>  arch/efi/efi/efi-block-io.c                |  174 ++++
>  arch/efi/efi/efi-device.c                  |  348 +++++++
>  arch/efi/efi/efi-image.c                   |  105 +++
>  arch/efi/efi/efi.c                         |  342 +++++++
>  arch/efi/efi/env-efi/network/eth0-discover |    5 +
>  arch/efi/include/asm/barebox.h             |    1 +
>  arch/efi/include/asm/bitops.h              |   15 +
>  arch/efi/include/asm/byteorder.h           |    8 +
>  arch/efi/include/asm/common.h              |    4 +
>  arch/efi/include/asm/dma.h                 |   13 +
>  arch/efi/include/asm/elf.h                 |   60 ++
>  arch/efi/include/asm/io.h                  |   55 ++
>  arch/efi/include/asm/posix_types.h         |   93 ++
>  arch/efi/include/asm/sections.h            |    1 +
>  arch/efi/include/asm/string.h              |    1 +
>  arch/efi/include/asm/swab.h                |    6 +
>  arch/efi/include/asm/types.h               |   73 ++
>  arch/efi/include/asm/unaligned.h           |   19 +
>  arch/efi/include/mach/debug_ll.h           |   20 +
>  arch/efi/include/mach/efi-device.h         |   45 +
>  arch/efi/include/mach/efi.h                |   24 +
>  arch/efi/lib/.gitignore                    |    2 +
>  arch/efi/lib/Makefile                      |    4 +
>  arch/efi/lib/crt0-efi-ia32.S               |   76 ++
>  arch/efi/lib/crt0-efi-x86_64.S             |   75 ++
>  arch/efi/lib/elf_ia32_efi.lds.S            |  102 +++
>  arch/efi/lib/elf_x86_64_efi.lds.S          |   93 ++
>  arch/efi/lib/reloc_ia32.c                  |   97 ++
>  arch/efi/lib/reloc_x86_64.c                |   96 ++
>  commands/edit.c                            |   11 +-
>  commands/oftree.c                          |    2 +-
>  common/Kconfig                             |    8 +
>  common/Makefile                            |    4 +-
>  common/block.c                             |    3 +
>  common/console.c                           |   29 +
>  common/efi-devicepath.c                    | 1370 ++++++++++++++++++++++++++++
>  common/efi-guid.c                          |   11 +
>  common/filetype.c                          |    4 +
>  common/memory.c                            |    2 +-
>  common/partitions/efi.c                    |    2 +-
>  common/partitions/efi.h                    |    2 +-
>  drivers/net/Kconfig                        |    4 +
>  drivers/net/Makefile                       |    1 +
>  drivers/net/efi-snp.c                      |  296 ++++++
>  drivers/of/Kconfig                         |    2 +-
>  drivers/of/platform.c                      |    3 +-
>  drivers/serial/Kconfig                     |    4 +
>  drivers/serial/Makefile                    |    1 +
>  drivers/serial/efi-stdio.c                 |  367 ++++++++
>  drivers/serial/serial_ns16550.c            |  237 ++---
>  fs/Kconfig                                 |   15 +
>  fs/Makefile                                |    2 +
>  fs/efi.c                                   |  559 ++++++++++++
>  fs/efivarfs.c                              |  340 +++++++
>  fs/fat/fat.c                               |    4 +-
>  include/block.h                            |    1 +
>  include/console.h                          |    1 +
>  include/efi.h                              |  508 +++++++++++
>  include/filetype.h                         |    1 +
>  include/linux/efi.h                        |  547 -----------
>  include/linux/kernel.h                     |   23 +-
>  include/param.h                            |    2 +-
>  include/wchar.h                            |   16 +
>  lib/Kconfig                                |    3 +
>  lib/Makefile                               |    1 +
>  lib/misc.c                                 |    3 +
>  lib/readkey.c                              |    2 +-
>  lib/vsprintf.c                             |   62 ++
>  lib/wchar.c                                |   80 ++
>  76 files changed, 6319 insertions(+), 676 deletions(-)
>  create mode 100644 Documentation/boards/efi.rst
>  create mode 100644 arch/efi/Kconfig
>  create mode 100644 arch/efi/Makefile
>  create mode 100644 arch/efi/configs/efi_defconfig
>  create mode 100644 arch/efi/efi/Makefile
>  create mode 100644 arch/efi/efi/clocksource.c
>  create mode 100644 arch/efi/efi/efi-block-io.c
>  create mode 100644 arch/efi/efi/efi-device.c
>  create mode 100644 arch/efi/efi/efi-image.c
>  create mode 100644 arch/efi/efi/efi.c
>  create mode 100644 arch/efi/efi/env-efi/network/eth0-discover
>  create mode 100644 arch/efi/include/asm/barebox.h
>  create mode 100644 arch/efi/include/asm/bitops.h
>  create mode 100644 arch/efi/include/asm/byteorder.h
>  create mode 100644 arch/efi/include/asm/common.h
>  create mode 100644 arch/efi/include/asm/dma.h
>  create mode 100644 arch/efi/include/asm/elf.h
>  create mode 100644 arch/efi/include/asm/io.h
>  create mode 100644 arch/efi/include/asm/posix_types.h
>  create mode 100644 arch/efi/include/asm/sections.h
>  create mode 100644 arch/efi/include/asm/string.h
>  create mode 100644 arch/efi/include/asm/swab.h
>  create mode 100644 arch/efi/include/asm/types.h
>  create mode 100644 arch/efi/include/asm/unaligned.h
>  create mode 100644 arch/efi/include/mach/debug_ll.h
>  create mode 100644 arch/efi/include/mach/efi-device.h
>  create mode 100644 arch/efi/include/mach/efi.h
>  create mode 100644 arch/efi/lib/.gitignore
>  create mode 100644 arch/efi/lib/Makefile
>  create mode 100644 arch/efi/lib/crt0-efi-ia32.S
>  create mode 100644 arch/efi/lib/crt0-efi-x86_64.S
>  create mode 100644 arch/efi/lib/elf_ia32_efi.lds.S
>  create mode 100644 arch/efi/lib/elf_x86_64_efi.lds.S
>  create mode 100644 arch/efi/lib/reloc_ia32.c
>  create mode 100644 arch/efi/lib/reloc_x86_64.c
>  create mode 100644 common/efi-devicepath.c
>  create mode 100644 common/efi-guid.c
>  create mode 100644 drivers/net/efi-snp.c
>  create mode 100644 drivers/serial/efi-stdio.c
>  create mode 100644 fs/efi.c
>  create mode 100644 fs/efivarfs.c
>  create mode 100644 include/efi.h
>  delete mode 100644 include/linux/efi.h
>  create mode 100644 include/wchar.h
>  create mode 100644 lib/wchar.c
> 
> 
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