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|
// SPDX-License-Identifier: MIT
// Copyright (c) 2015-2021 Zig Contributors
// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
// The MIT license requires this copyright notice to be included in all copies
// and substantial portions of the software.
const uefi = @import("std").os.uefi;
const Guid = uefi.Guid;
pub const DevicePathProtocol = packed struct {
type: DevicePathType,
subtype: u8,
length: u16,
pub const guid align(8) = Guid{
.time_low = 0x09576e91,
.time_mid = 0x6d3f,
.time_high_and_version = 0x11d2,
.clock_seq_high_and_reserved = 0x8e,
.clock_seq_low = 0x39,
.node = [_]u8{ 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b },
};
pub fn getDevicePath(self: *const DevicePathProtocol) ?DevicePath {
return switch (self.type) {
.Hardware => blk: {
const hardware: ?HardwareDevicePath = switch (@intToEnum(HardwareDevicePath.Subtype, self.subtype)) {
.Pci => .{ .Pci = @ptrCast(*const HardwareDevicePath.PciDevicePath, self) },
.PcCard => .{ .PcCard = @ptrCast(*const HardwareDevicePath.PcCardDevicePath, self) },
.MemoryMapped => .{ .MemoryMapped = @ptrCast(*const HardwareDevicePath.MemoryMappedDevicePath, self) },
.Vendor => .{ .Vendor = @ptrCast(*const HardwareDevicePath.VendorDevicePath, self) },
.Controller => .{ .Controller = @ptrCast(*const HardwareDevicePath.ControllerDevicePath, self) },
.Bmc => .{ .Bmc = @ptrCast(*const HardwareDevicePath.BmcDevicePath, self) },
_ => null,
};
break :blk if (hardware) |h| .{ .Hardware = h } else null;
},
.Acpi => blk: {
const acpi: ?AcpiDevicePath = switch (@intToEnum(AcpiDevicePath.Subtype, self.subtype)) {
else => null, // TODO
};
break :blk if (acpi) |a| .{ .Acpi = a } else null;
},
.Messaging => blk: {
const messaging: ?MessagingDevicePath = switch (@intToEnum(MessagingDevicePath.Subtype, self.subtype)) {
else => null, // TODO
};
break :blk if (messaging) |m| .{ .Messaging = m } else null;
},
.Media => blk: {
const media: ?MediaDevicePath = switch (@intToEnum(MediaDevicePath.Subtype, self.subtype)) {
.HardDrive => .{ .HardDrive = @ptrCast(*const MediaDevicePath.HardDriveDevicePath, self) },
.Cdrom => .{ .Cdrom = @ptrCast(*const MediaDevicePath.CdromDevicePath, self) },
.Vendor => .{ .Vendor = @ptrCast(*const MediaDevicePath.VendorDevicePath, self) },
.FilePath => .{ .FilePath = @ptrCast(*const MediaDevicePath.FilePathDevicePath, self) },
.MediaProtocol => .{ .MediaProtocol = @ptrCast(*const MediaDevicePath.MediaProtocolDevicePath, self) },
.PiwgFirmwareFile => .{ .PiwgFirmwareFile = @ptrCast(*const MediaDevicePath.PiwgFirmwareFileDevicePath, self) },
.PiwgFirmwareVolume => .{ .PiwgFirmwareVolume = @ptrCast(*const MediaDevicePath.PiwgFirmwareVolumeDevicePath, self) },
.RelativeOffsetRange => .{ .RelativeOffsetRange = @ptrCast(*const MediaDevicePath.RelativeOffsetRangeDevicePath, self) },
.RamDisk => .{ .RamDisk = @ptrCast(*const MediaDevicePath.RamDiskDevicePath, self) },
_ => null,
};
break :blk if (media) |m| .{ .Media = m } else null;
},
.BiosBootSpecification => blk: {
const bbs: ?BiosBootSpecificationDevicePath = switch (@intToEnum(BiosBootSpecificationDevicePath.Subtype, self.subtype)) {
.BBS101 => .{ .BBS101 = @ptrCast(*const BiosBootSpecificationDevicePath.BBS101DevicePath, self) },
_ => null,
};
break :blk if (bbs) |b| .{ .BiosBootSpecification = b } else null;
},
.End => blk: {
const end: ?EndDevicePath = switch (@intToEnum(EndDevicePath.Subtype, self.subtype)) {
.EndEntire => .{ .EndEntire = @ptrCast(*const EndDevicePath.EndEntireDevicePath, self) },
.EndThisInstance => .{ .EndThisInstance = @ptrCast(*const EndDevicePath.EndThisInstanceDevicePath, self) },
_ => null,
};
break :blk if (end) |e| .{ .End = e } else null;
},
_ => null,
};
}
};
pub const DevicePath = union(DevicePathType) {
Hardware: HardwareDevicePath,
Acpi: AcpiDevicePath,
Messaging: MessagingDevicePath,
Media: MediaDevicePath,
BiosBootSpecification: BiosBootSpecificationDevicePath,
End: EndDevicePath,
};
pub const DevicePathType = extern enum(u8) {
Hardware = 0x01,
Acpi = 0x02,
Messaging = 0x03,
Media = 0x04,
BiosBootSpecification = 0x05,
End = 0x7f,
_,
};
pub const HardwareDevicePath = union(Subtype) {
Pci: *const PciDevicePath,
PcCard: *const PcCardDevicePath,
MemoryMapped: *const MemoryMappedDevicePath,
Vendor: *const VendorDevicePath,
Controller: *const ControllerDevicePath,
Bmc: *const BmcDevicePath,
pub const Subtype = extern enum(u8) {
Pci = 1,
PcCard = 2,
MemoryMapped = 3,
Vendor = 4,
Controller = 5,
Bmc = 6,
_,
};
pub const PciDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const PcCardDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const MemoryMappedDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const VendorDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const ControllerDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const BmcDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
};
pub const AcpiDevicePath = union(Subtype) {
Acpi: void, // TODO
ExpandedAcpi: void, // TODO
Adr: void, // TODO
Nvdimm: void, // TODO
pub const Subtype = extern enum(u8) {
Acpi = 1,
ExpandedAcpi = 2,
Adr = 3,
Nvdimm = 4,
_,
};
};
pub const MessagingDevicePath = union(Subtype) {
Atapi: void, // TODO
Scsi: void, // TODO
FibreChannel: void, // TODO
FibreChannelEx: void, // TODO
@"1394": void, // TODO
Usb: void, // TODO
Sata: void, // TODO
UsbWwid: void, // TODO
Lun: void, // TODO
UsbClass: void, // TODO
I2o: void, // TODO
MacAddress: void, // TODO
Ipv4: void, // TODO
Ipv6: void, // TODO
Vlan: void, // TODO
InfiniBand: void, // TODO
Uart: void, // TODO
Vendor: void, // TODO
pub const Subtype = extern enum(u8) {
Atapi = 1,
Scsi = 2,
FibreChannel = 3,
FibreChannelEx = 21,
@"1394" = 4,
Usb = 5,
Sata = 18,
UsbWwid = 16,
Lun = 17,
UsbClass = 15,
I2o = 6,
MacAddress = 11,
Ipv4 = 12,
Ipv6 = 13,
Vlan = 20,
InfiniBand = 9,
Uart = 14,
Vendor = 10,
_,
};
};
pub const MediaDevicePath = union(Subtype) {
HardDrive: *const HardDriveDevicePath,
Cdrom: *const CdromDevicePath,
Vendor: *const VendorDevicePath,
FilePath: *const FilePathDevicePath,
MediaProtocol: *const MediaProtocolDevicePath,
PiwgFirmwareFile: *const PiwgFirmwareFileDevicePath,
PiwgFirmwareVolume: *const PiwgFirmwareVolumeDevicePath,
RelativeOffsetRange: *const RelativeOffsetRangeDevicePath,
RamDisk: *const RamDiskDevicePath,
pub const Subtype = extern enum(u8) {
HardDrive = 1,
Cdrom = 2,
Vendor = 3,
FilePath = 4,
MediaProtocol = 5,
PiwgFirmwareFile = 6,
PiwgFirmwareVolume = 7,
RelativeOffsetRange = 8,
RamDisk = 9,
_,
};
pub const HardDriveDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const CdromDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const VendorDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const FilePathDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
pub fn getPath(self: *const FilePathDevicePath) [*:0]const u16 {
return @ptrCast([*:0]const u16, @alignCast(2, @ptrCast([*]const u8, self)) + @sizeOf(FilePathDevicePath));
}
};
pub const MediaProtocolDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
// TODO
};
pub const PiwgFirmwareFileDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
};
pub const PiwgFirmwareVolumeDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
};
pub const RelativeOffsetRangeDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
reserved: u32,
start: u64,
end: u64,
};
pub const RamDiskDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
start: u64,
end: u64,
disk_type: uefi.Guid,
instance: u16,
};
};
pub const BiosBootSpecificationDevicePath = union(Subtype) {
BBS101: *const BBS101DevicePath,
pub const Subtype = extern enum(u8) {
BBS101 = 1,
_,
};
pub const BBS101DevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
device_type: u16,
status_flag: u16,
pub fn getDescription(self: *const BBS101DevicePath) [*:0]const u8 {
return @ptrCast([*:0]const u8, self) + @sizeOf(BBS101DevicePath);
}
};
};
pub const EndDevicePath = union(Subtype) {
EndEntire: *const EndEntireDevicePath,
EndThisInstance: *const EndThisInstanceDevicePath,
pub const Subtype = extern enum(u8) {
EndEntire = 0xff,
EndThisInstance = 0x01,
_,
};
pub const EndEntireDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
};
pub const EndThisInstanceDevicePath = packed struct {
type: DevicePathType,
subtype: Subtype,
length: u16,
};
};
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