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History log of /src/sys/dev/efivar.h
RevisionDateAuthorComments
 1.2  22-May-2023  riastradh efi(4): Implement MI parts of EFIIOC_GET_TABLE.

Intended to be compatible with FreeBSD.

Not yet supported on any architectures.

PR kern/57076

XXX pullup-10
 1.1  10-Oct-2021  jmcneill branches: 1.1.4;
efi: Add /dev/efi character device

Introduce a /dev/efi character device that provides a means for accessing
UEFI RT variable services from userland. Compatible with the FreeBSD ioctl
interface for ease of porting their libefivar and associated tools.

The ioctl interface is defined in sys/efiio.h.

To enable support for this on an arch, the kernel needs `pseudo-device efi`
and the MD EFI implementation needs to register its backend by calling
efi_ops_register(). This commit includes an implementation for Arm.
 1.1.4.1  01-Aug-2023  martin Pull up following revision(s) (requested by riastradh in ticket #292):

sys/arch/arm/arm/efi_runtime.c: revision 1.11
sys/dev/efi/efi.h: revision 1.3
sys/arch/x86/x86/efi_machdep.c: revision 1.5
sys/arch/x86/x86/efi_machdep.c: revision 1.6
sys/dev/efi.c: revision 1.5
sys/dev/efi.c: revision 1.6
sys/dev/efi.c: revision 1.7
sys/dev/efi.c: revision 1.8
sys/dev/efi.c: revision 1.9
sys/dev/efivar.h: revision 1.2
sys/sys/efiio.h: revision 1.3

efi(4): Parenthesize EFIERR argument out of paranoia.
PR kern/57076

efi(4): Move error macros to efi.h.
PR kern/57076

efi(4): Implement MI parts of EFIIOC_GET_TABLE.
Intended to be compatible with FreeBSD.
Not yet supported on any architectures.
PR kern/57076

efi(4): Implement EFIIOC_GET_TABLE on x86.
PR kern/57076

efi(4): Translate between size_t and unsigned long.
Fixes i386 build.
PR kern/57076

efi(4): Fix logic to handle buffer sizing.

Can't KASSERT(datasize <= databufsize) because the caller is allowed
to pass in a too-small size and get ERR_BUFFER_TOO_SMALL back, with
the actual size returned so it can resize its buffer. So just clamp
the size to the smaller of what the caller provided and what the
firwmare provided, instead of asserting anything.

PR kern/57076

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