At present U-Boot can be built as an EFI app, but it is really just for testing, with very few features. Instead, the payload build is used for booting on top of UEFI, where U-Boot takes over the machine immediately and supplies its own drivers.
But the app could be made more useful.
This series provides access to EFI block devices and the video console within U-Boot. It also restructures the app to make it possible to boot a kernel, although further work is needed to implement this.
This can be thought of as making U-Boot perform a little like 'grub', in that it runs purely based on UEFI-provided services.
Of course a lot more work is required, but this is a start.
Note: It would be very useful to include qemu tests of the app and stub in CI.
This is available at u-boot-dm/efi-working
Changes in v4: - Change the patch subject to make it clear this does not build U-Boot - Make EFI_LOADER depend on !EFI_APP - Update commit message to mention that you have to build U-Boot
Changes in v3: - Add new patch to show the system-table revision - Default to 256MB of RAM for U-Boot instead of 32MB - Drop comments that confuse sphinx - Fix 'complicating' typo - Move device_path path change to its own patch - Update minimum RAM to 256MB! - s/qemu/QEMU/
Changes in v2: - Add MAINTAINERS entry - Add a better boot command too - Add a note that EFI_GRAPHICS_OUTPUT_PROTOCOL is used - Add a sentence about what the patch does - Add a work-around to avoid a toolchain crash - Add new patch to drop the OF_EMBED warning for EFI - Add new patch to enable DM_ETH for the app - Add new patch to support the efi command in the app - Add support for creating a partition table with a filesystem inside - Add support for running qemu with just a serial console (no display) - Drop mention of partitions from the commit message - Expand the commit message to make things clearer - Fix 'as' typo - Show the correct interface type with 'part list' - Update documentation - Update the commit message to explain things better - Use log_info() instead of printf()
Simon Glass (34): efi: Add a script to build an image for testing on UEFI efi: Enable DM_ETH for the app efi: Drop the OF_EMBED warning for EFI x86: Create a 32/64-bit selection for the app efi: Create a 64-bit app x86: Don't duplicate global_ptr in 64-bit EFI app efi: Add a way to obtain boot services in the app efi: Add video support to the app efi: Add EFI uclass for media efi: Add a media/block driver for EFI block devices efi: Locate all block devices in the app patman: Use a ValueError exception if tools.Run() fails binman: Report an error if test files fail to compile binman: Support reading the offset of an ELF-file symbol binman: Tidy up comments on _DoTestFile() binman: Support updating the dtb in an ELF file efi: serial: Support arrow keys bloblist: Support allocating the bloblist x86: Allow booting a kernel from the EFI app x86: Don't process the kernel command line unless enabled x86: efi: Add room for the binman definition in the dtb efi: Drop device_path from struct efi_priv efi: Add comments to struct efi_priv efi: Fix ll_boot_init() operation with the app efi: Add a few comments to the stub efi: Share struct efi_priv between the app and stub code efi: Move exit_boot_services into a function efi: Check for failure when initing the app efi: Mention that efi_info_get() is only used in the stub efi: Show when allocated pages are used efi: Allow easy selection of serial-only operation efi: Update efi_get_next_mem_desc() to avoid needing a map efi: Support the efi command in the app efi: Show the system-table revision
MAINTAINERS | 7 + Makefile | 10 +- arch/sandbox/dts/test.dts | 4 + arch/x86/cpu/efi/payload.c | 17 +- arch/x86/cpu/intel_common/Makefile | 2 +- arch/x86/cpu/u-boot-64.lds | 2 + arch/x86/cpu/x86_64/Makefile | 4 + arch/x86/cpu/x86_64/cpu.c | 32 +- arch/x86/cpu/x86_64/misc.c | 41 +++ arch/x86/dts/Makefile | 2 +- arch/x86/dts/efi-x86_app.dts | 4 + arch/x86/lib/bootm.c | 11 +- arch/x86/lib/zimage.c | 13 +- board/efi/Kconfig | 15 +- board/efi/efi-x86_app/Kconfig | 6 +- board/efi/efi-x86_app/MAINTAINERS | 11 +- cmd/Makefile | 2 +- cmd/efi.c | 78 +++-- common/Kconfig | 15 +- common/bloblist.c | 16 +- common/board_f.c | 8 +- ..._app_defconfig => efi-x86_app32_defconfig} | 3 +- configs/efi-x86_app64_defconfig | 38 +++ disk/part.c | 5 +- doc/develop/bloblist.rst | 16 + doc/develop/uefi/u-boot_on_efi.rst | 74 ++++- drivers/block/Kconfig | 33 +++ drivers/block/Makefile | 4 + drivers/block/blk-uclass.c | 2 +- drivers/block/efi-media-uclass.c | 15 + drivers/block/efi_blk.c | 115 ++++++++ drivers/block/sb_efi_media.c | 20 ++ drivers/serial/serial_efi.c | 11 +- drivers/video/Kconfig | 2 +- drivers/video/efi.c | 45 ++- include/configs/efi-x86_app.h | 31 +- include/dm/uclass-id.h | 1 + include/efi.h | 121 +++++++- include/efi_api.h | 15 + include/init.h | 2 +- lib/efi/Kconfig | 34 ++- lib/efi/efi.c | 106 +++++++ lib/efi/efi_app.c | 276 +++++++++++++++++- lib/efi/efi_stub.c | 95 +++--- lib/efi_loader/Kconfig | 1 + scripts/build-efi.sh | 193 ++++++++++++ test/dm/Makefile | 1 + test/dm/efi_media.c | 24 ++ tools/binman/binman.rst | 36 +++ tools/binman/cmdline.py | 2 + tools/binman/control.py | 11 + tools/binman/elf.py | 74 ++++- tools/binman/elf_test.py | 45 ++- tools/binman/ftest.py | 88 +++++- tools/binman/test/Makefile | 13 +- tools/binman/test/bss_data.c | 2 +- tools/binman/test/embed_data.c | 16 + tools/binman/test/embed_data.lds | 23 ++ tools/binman/test/u_boot_binman_embed.c | 13 + tools/binman/test/u_boot_binman_embed.lds | 29 ++ tools/binman/test/u_boot_binman_embed_sm.c | 13 + tools/patman/tools.py | 2 +- 62 files changed, 1745 insertions(+), 205 deletions(-) create mode 100644 arch/x86/cpu/x86_64/misc.c rename configs/{efi-x86_app_defconfig => efi-x86_app32_defconfig} (94%) create mode 100644 configs/efi-x86_app64_defconfig create mode 100644 drivers/block/efi-media-uclass.c create mode 100644 drivers/block/efi_blk.c create mode 100644 drivers/block/sb_efi_media.c create mode 100755 scripts/build-efi.sh create mode 100644 test/dm/efi_media.c create mode 100644 tools/binman/test/embed_data.c create mode 100644 tools/binman/test/embed_data.lds create mode 100644 tools/binman/test/u_boot_binman_embed.c create mode 100644 tools/binman/test/u_boot_binman_embed.lds create mode 100644 tools/binman/test/u_boot_binman_embed_sm.c