64 lines
2.2 KiB
Zig
64 lines
2.2 KiB
Zig
const uefi = @import("std").os.uefi;
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const Guid = uefi.Guid;
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const TableHeader = uefi.tables.TableHeader;
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const Time = uefi.Time;
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const TimeCapabilities = uefi.TimeCapabilities;
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const Status = uefi.Status;
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/// Runtime services are provided by the firmware before and after exitBootServices has been called.
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///
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/// As the runtime_services table may grow with new UEFI versions, it is important to check hdr.header_size.
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///
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/// Some functions may not be supported. Check the RuntimeServicesSupported variable using getVariable.
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/// getVariable is one of the functions that may not be supported.
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///
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/// Some functions may not be called while other functions are running.
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pub const RuntimeServices = extern struct {
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hdr: TableHeader,
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/// Returns the current time and date information, and the time-keeping capabilities of the hardware platform.
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getTime: fn (*uefi.Time, ?*TimeCapabilities) callconv(.C) Status,
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setTime: Status, // TODO
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getWakeupTime: Status, // TODO
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setWakeupTime: Status, // TODO
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setVirtualAddressMap: Status, // TODO
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convertPointer: Status, // TODO
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/// Returns the value of a variable.
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getVariable: fn ([*:0]const u16, *align(8) const Guid, ?*u32, *usize, ?*c_void) callconv(.C) Status,
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/// Enumerates the current variable names.
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getNextVariableName: fn (*usize, [*:0]u16, *align(8) Guid) callconv(.C) Status,
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/// Sets the value of a variable.
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setVariable: fn ([*:0]const u16, *align(8) const Guid, u32, usize, *c_void) callconv(.C) Status,
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getNextHighMonotonicCount: Status, // TODO
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/// Resets the entire platform.
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resetSystem: fn (ResetType, Status, usize, ?*const c_void) callconv(.C) noreturn,
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updateCapsule: Status, // TODO
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queryCapsuleCapabilities: Status, // TODO
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queryVariableInfo: Status, // TODO
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pub const signature: u64 = 0x56524553544e5552;
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};
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pub const ResetType = extern enum(u32) {
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ResetCold,
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ResetWarm,
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ResetShutdown,
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ResetPlatformSpecific,
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};
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pub const global_variable align(8) = Guid{
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.time_low = 0x8be4df61,
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.time_mid = 0x93ca,
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.time_high_and_version = 0x11d2,
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.clock_seq_high_and_reserved = 0xaa,
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.clock_seq_low = 0x0d,
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.node = [_]u8{ 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c },
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};
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