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feat(uefi): add virtual addressing helpers (#10195)

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based off definitions in https://uefi.org/sites/default/files/resources/UEFI%20Spec%202_6.pdf
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Stephen von Takach
2021-11-23 13:32:16 +11:00
committed by GitHub
parent bc3e86c4b7
commit ed70f9981c
1 changed files with 7 additions and 2 deletions
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9
lib/std/os/uefi/tables/runtime_services.zig
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@@ -4,6 +4,7 @@ const TableHeader = uefi.tables.TableHeader;
const Time = uefi.Time;
const TimeCapabilities = uefi.TimeCapabilities;
const Status = uefi.Status;
const MemoryDescriptor = uefi.tables.MemoryDescriptor;
/// Runtime services are provided by the firmware before and after exitBootServices has been called.
///
@@ -22,8 +23,12 @@ pub const RuntimeServices = extern struct {
setTime: Status, // TODO
getWakeupTime: Status, // TODO
setWakeupTime: Status, // TODO
setVirtualAddressMap: Status, // TODO
convertPointer: Status, // TODO
/// Changes the runtime addressing mode of EFI firmware from physical to virtual.
setVirtualAddressMap: fn (usize, usize, u32, [*]MemoryDescriptor) callconv(.C) Status,
/// Determines the new virtual address that is to be used on subsequent memory accesses.
convertPointer: fn (usize, **c_void) callconv(.C) Status,
/// Returns the value of a variable.
getVariable: fn ([*:0]const u16, *align(8) const Guid, ?*u32, *usize, ?*c_void) callconv(.C) Status,