It is a bit of a pain to log EFI boot-services calls at present. The output goes to the console so cannot easily be inspected later. Also it would be useful to be able to store the log and review it later, perhaps after something has gone wrong.
This series makes a start on implementing a log-to-buffer feature. It provides a simple 'efidebug log' command to inspect the buffer. For now, only memory allocations are logged.
This feature makes it possible to add tests to check which EFI calls are made by U-Boot itself. It may also make it easier to figure out what is needed for booting Windows.
Some patches to help with debugging sandbox memory-mapping are included, but for now EFI's use of mapping is not adjusted.
Changes in v2: - Rebase on efil series (memory address/pointers)
Simon Glass (7): efi_loader: Fix free in ..._media_device_boot_option() efi_loader: Add support for logging EFI calls efi_loader: Create the log on startup efi_loader: Add a command to show the EFI log test: efi_loader: Add a simple test for the EFI log efi_loader: Use the log with memory-related functions efi_loader: Add documentation for the EFI log
MAINTAINERS | 7 + cmd/efidebug.c | 53 ++++- configs/sandbox_defconfig | 3 + doc/develop/uefi/uefi.rst | 22 ++ doc/usage/cmd/efidebug.rst | 109 +++++++++ doc/usage/index.rst | 1 + include/bloblist.h | 1 + include/efi.h | 1 + include/efi_log.h | 316 +++++++++++++++++++++++++ lib/efi_loader/Kconfig | 19 ++ lib/efi_loader/Makefile | 1 + lib/efi_loader/efi_bootmgr.c | 3 +- lib/efi_loader/efi_log.c | 444 +++++++++++++++++++++++++++++++++++ lib/efi_loader/efi_memory.c | 66 +++++- lib/efi_loader/efi_setup.c | 7 + test/lib/Makefile | 1 + test/lib/efi_log.c | 93 ++++++++ 17 files changed, 1131 insertions(+), 16 deletions(-) create mode 100644 doc/usage/cmd/efidebug.rst create mode 100644 include/efi_log.h create mode 100644 lib/efi_loader/efi_log.c create mode 100644 test/lib/efi_log.c