diff options
| author | Tom Rini | 2021-01-14 08:50:23 -0500 |
|---|---|---|
| committer | Tom Rini | 2021-01-14 08:50:23 -0500 |
| commit | 35772ff4f63a302e0b873096372c70292fb0af79 (patch) | |
| tree | ffa00f958cf61d12a9348b27699e3980f9d9f15d /doc | |
| parent | ab1a425524a79eeca61e7b67fdf382c7a499346f (diff) | |
| parent | 8e70f1cb3f2c18d574b087d4fc1d79e68ce98fa9 (diff) | |
Merge tag 'efi-2021-04-rc1' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi
Pull request for UEFI sub-system for efi-2021-04-rc1
In the UEFI sub-system:
* implement non-blocking file services
* print boot device and file path in helloworld.efi
* improve detection of boot device
* correct argument handling in efivar.py
* implement EFI_DT_FIXUP_PROTOCOL
Bug fixes:
* adjust conitrace command for low baud rates
* check that FIT images are valid FDTs
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/uefi/uefi.rst | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/doc/uefi/uefi.rst b/doc/uefi/uefi.rst index dc930d92402..5a67737c157 100644 --- a/doc/uefi/uefi.rst +++ b/doc/uefi/uefi.rst @@ -59,13 +59,10 @@ Below you find the output of an example session starting GRUB:: 120832 bytes read in 7 ms (16.5 MiB/s) => bootefi ${kernel_addr_r} ${fdt_addr_r} -The bootefi command uses the device, the file name, and the file size -(environment variable 'filesize') of the most recently loaded file when setting -up the binary for execution. So the UEFI binary should be loaded last. - -The environment variable 'bootargs' is passed as load options in the UEFI system -table. The Linux kernel EFI stub uses the load options as command line -arguments. +When booting from a memory location it is unknown from which file it was loaded. +Therefore the bootefi command uses the device path of the block device partition +or the network adapter and the file name of the most recently loaded PE-COFF +file when setting up the loaded image protocol. Launching a UEFI binary from a FIT image ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |