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c8fe916c91
Currently the Sphinx doc only contains API descriptions of several U-Boot subsystems. For future extension, group these existing docs into an API sub-directory. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
106 lines
2.3 KiB
ReStructuredText
106 lines
2.3 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
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UEFI subsystem
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==============
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Lauching UEFI images
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--------------------
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Bootefi command
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~~~~~~~~~~~~~~~
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The bootefi command is used to start UEFI applications or to install UEFI
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drivers. It takes two parameters
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bootefi <image address> [fdt address]
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* image address - the memory address of the UEFI binary
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* fdt address - the memory address of the flattened device tree
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The environment variable 'bootargs' is passed as load options in the UEFI system
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table. The Linux kernel EFI stub uses the load options as command line
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arguments.
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.. kernel-doc:: cmd/bootefi.c
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:internal:
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Boot manager
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~~~~~~~~~~~~
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The UEFI specification foresees to define boot entries and boot sequence via UEFI
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variables. Booting according to these variables is possible via
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bootefi bootmgr [fdt address]
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* fdt address - the memory address of the flattened device tree
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The relevant variables are:
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* Boot0000-BootFFFF define boot entries
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* BootNext specifies next boot option to be booted
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* BootOrder specifies in which sequence the boot options shall be tried if
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BootNext is not defined or booting via BootNext fails
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.. kernel-doc:: lib/efi_loader/efi_bootmgr.c
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:internal:
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Efidebug command
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~~~~~~~~~~~~~~~~
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The efidebug command is used to set and display boot options as well as to
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display information about internal data of the UEFI subsystem (devices,
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drivers, handles, loaded images, and the memory map).
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.. kernel-doc:: cmd/efidebug.c
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:internal:
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Initialization of the UEFI sub-system
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-------------------------------------
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.. kernel-doc:: lib/efi_loader/efi_setup.c
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:internal:
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Boot services
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-------------
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.. kernel-doc:: lib/efi_loader/efi_boottime.c
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:internal:
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Image relocation
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~~~~~~~~~~~~~~~~
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.. kernel-doc:: lib/efi_loader/efi_image_loader.c
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:internal:
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Memory services
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~~~~~~~~~~~~~~~
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.. kernel-doc:: lib/efi_loader/efi_memory.c
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:internal:
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Runtime services
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----------------
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.. kernel-doc:: lib/efi_loader/efi_runtime.c
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:internal:
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Variable services
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~~~~~~~~~~~~~~~~~
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.. kernel-doc:: lib/efi_loader/efi_variable.c
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:internal:
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UEFI drivers
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------------
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UEFI driver uclass
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~~~~~~~~~~~~~~~~~~
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.. kernel-doc:: lib/efi_driver/efi_uclass.c
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:internal:
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Block device driver
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~~~~~~~~~~~~~~~~~~~
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.. kernel-doc:: lib/efi_driver/efi_block_device.c
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:internal:
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