PCV services

bpc

This is "nn::bpc::IBoardPowerControlManager".

Cmd	Name
0	#ShutdownSystem
1	#RebootSystem
2	#GetWakeupReason
3	#GetShutdownReason
4	#GetAcOk
5	#GetBoardPowerControlEvent
6	[2.0.0-13.2.1] #GetSleepButtonState
7	[2.0.0+] #GetPowerEvent
8	[2.0.0-9.2.0] #CreateWakeupTimer
9	[2.0.0-9.2.0] #CancelWakeupTimer
10	[2.0.0-9.2.0] #EnableWakeupTimerOnDevice
11	[3.0.0-9.2.0] #CreateWakeupTimerEx
12	[3.0.0-9.2.0] #GetLastEnabledWakeupTimerType
13	[3.0.0-9.2.0] #CleanAllWakeupTimers
14	[6.0.0+] #GetPowerButton
15	[10.0.0+] #SetEnableWakeupTimer

ShutdownSystem

No input/output.

RebootSystem

No input/output.

GetWakeupReason

No input. Returns an output u32.

GetShutdownReason

No input. Returns an output u32.

GetAcOk

No input. Returns an output bool.

GetBoardPowerControlEvent

Takes an input BoardPowerControlEventTarget. Returns an output Event handle.

GetSleepButtonState

No input. Returns an output SleepButtonState.

GetPowerEvent

Takes an input EventTarget. Returns an output Event handle.

CreateWakeupTimer

Takes an input u64. Returns an output u32.

CancelWakeupTimer

Takes an input u32. No output.

EnableWakeupTimerOnDevice

No input. Returns an output bool IsEnabled and an output u64 Interval.

[3.0.0+] Now returns an u32 and an u64.

CreateWakeupTimerEx

Takes two input u64s. Returns an output u32.

GetLastEnabledWakeupTimerType

No input. Returns an output u32.

CleanAllWakeupTimers

Takes an input u32. No output.

GetPowerButton

No input. Returns an output bool IsPushed.

SetEnableWakeupTimer

Unofficial name.

No input/output. Enables an internal wakeup timer when calling ShutdownSystem or RebootSystem.

bpc:r

This is "nn::bpc::IRtcManager".

Cmd	Name
0	#GetRtcTime
1	#SetRtcTime
2	#GetRtcResetDetected
3	[2.0.0+] #ClearRtcResetDetected
4	[3.0.0+] #SetUpRtcResetOnShutdown

GetRtcTime

No input. Returns an output u64.

SetRtcTime

Takes an input u64. No output.

GetRtcResetDetected

No input. Returns an output bool.

ClearRtcResetDetected

No input/output.

SetUpRtcResetOnShutdown

No input/output.

bpc:c

This is "nn::bpc::IBoardPowerControlManager".

[2.0.0+] This service was replaced by bpc.

Cmd	Name
0	#ShutdownSystem
1	#RebootSystem
2	#GetWakeupReason
3	#GetShutdownReason
4	#GetAcOk
5	#GetBoardPowerControlEvent

bpc:b

This is "nn::bpc::IPowerButtonManager".

[2.0.0+] This service was merged into bpc.

Cmd	Name
0	#GetSleepButtonState
1	#GetPowerEvent

bpc:w

This is "nn::bpc::IWakeupConfigManager".

[2.0.0+] This service was merged into bpc.

Cmd	Name
0	#CreateWakeupTimer
1	#CancelWakeupTimer
2	#EnableWakeupTimerOnDevice

pcv

This is "nn::pcv::detail::IPcvService".

Cmd	Name
[1.0.0-7.0.1] 0	#SetPowerEnabled
[1.0.0-7.0.1] 1	#SetClockEnabled
[1.0.0-7.0.1] 2	#SetClockRate
[1.0.0-7.0.1] 3	#GetClockRate
[1.0.0-7.0.1] 4	#GetState
[1.0.0-7.0.1] 5	#GetPossibleClockRates
[1.0.0-7.0.1] 6	#SetMinVClockRate
[1.0.0-7.0.1] 7	#SetReset
[1.0.0-7.0.1] 8	#SetVoltageEnabled
[1.0.0-7.0.1] 9	#GetVoltageEnabled
[1.0.0-7.0.1] 10	#GetVoltageRange
[1.0.0-7.0.1] 11	#SetVoltageValue
[1.0.0-7.0.1] 12	#GetVoltageValue
[1.0.0-7.0.1] 13	#GetTemperatureThresholds
[1.0.0-7.0.1] 14	#SetTemperature
[1.0.0-5.1.0] 15	#Initialize
[1.0.0-5.1.0] 16	#IsInitialized
[1.0.0-5.1.0] 17	#Finalize
[3.0.0-7.0.1] 18	#PowerOn
[3.0.0-7.0.1] 19	#PowerOff
[3.0.0-7.0.1] 20	#ChangeVoltage
[3.0.0-7.0.1] 21	#GetPowerClockInfoEvent
[3.0.0-7.0.1] 22	#GetOscillatorClock
[3.0.0-7.0.1] 23	#GetDvfsTable
[3.0.0-7.0.1] 24	#GetModuleStateTable
[3.0.0-7.0.1] 25	#GetPowerDomainStateTable
26	[3.0.0+] #GetFuseInfo
27	[5.0.0+] #GetDramId
[6.0.0-7.0.1] 28	#IsPoweredOn
[6.0.0-7.0.1] 29	#GetVoltage

SetPowerEnabled

Takes an input ModuleId and an input bool Enabled. No output.

SetClockEnabled

Takes an input ModuleId and an input bool Enabled. No output.

SetClockRate

Takes an input ModuleId and an input u32 ClockRateHz. No output.

GetClockRate

Takes an input ModuleId. Returns an output u32 ClockRateHz.

GetState

Takes an input ModuleId. Returns an output ModuleState.

GetPossibleClockRates

Takes a type-0xA output buffer of ClockRatesListType, an input ModuleId and an input s32 MaxCount. Returns an output s32 OutCount and an output u32 OutRates.

SetMinVClockRate

Takes an input ModuleId and an input u32 ClockRateHz. No output.

SetReset

Takes an input ModuleId and an input bool Asserted. No output.

SetVoltageEnabled

Takes an input PowerDomain and an input bool Enabled. No output.

GetVoltageEnabled

Takes an input PowerDomain. Returns an output bool Enabled.

GetVoltageRange

Takes an input PowerDomain. Returns three output s32s MinVolt, MaxVolt and StepVolt.

SetVoltageValue

Takes an input PowerDomain and an input s32 MicroVolt. No output.

GetVoltageValue

Takes an input PowerDomain. Returns an output s32 MicroVolt.

GetTemperatureThresholds

Takes a type-0xA output buffer of TemperatureThreshold and an input s32 MaxCount. Returns an output s32 OutCount.

SetTemperature

Takes an input s32 TemperatureMilliC. No output.

Initialize

No input/output.

IsInitialized

No input. Returns an output bool.

Finalize

No input/output.

PowerOn

Takes an input PowerControlTarget and an input s32 MicroVolt. No output.

PowerOff

Takes an input PowerControlTarget. No output.

ChangeVoltage

Takes an input PowerControlTarget and an input s32 MicroVolt. No output.

GetPowerClockInfoEvent

No input. Returns an output Event handle.

GetOscillatorClock

No input. Returns an output u32.

GetDvfsTable

Takes two type-0xA output buffers and two input s32s. Returns an output s32 OutCount.

[7.0.0+] The type-0xA output buffers were replaced with type-0x22 output buffers.

GetModuleStateTable

Takes a type-0xA output buffer of ModuleState and an input s32 MaxCount. Returns an output s32 OutCount.

[7.0.0+] The type-0xA output buffer was replaced with a type-0x22 output buffer.

GetPowerDomainStateTable

Takes a type-0xA output buffer of PowerDomainState and an input s32 MaxCount. Returns an output s32 OutCount.

[7.0.0+] The type-0xA output buffer was replaced with a type-0x22 output buffer.

GetFuseInfo

Takes a type-0xA output buffer and an input s32 MaxCount. Returns an output s32 OutCount.

GetDramId

No input. Returns an u32.

IsPoweredOn

Takes an input PowerControlTarget. Returns an output bool.

GetVoltage

Takes an input PowerControlTarget. Returns an output s32.

pcv:arb

This is "nn::pcv::IArbitrationManager".

This service no longer exists in [8.0.0+].

Cmd	Name
0	#ReleaseControl

ReleaseControl

Takes an input ModuleId. No output.

pcv:imm

This is "nn::pcv::IImmediateManager".

This service no longer exists in [8.0.0+].

Cmd	Name
0	#SetClockRate

clkrst, clkrst:i

These are "nn::clkrst::IClkrstManager" and "nn::clkrst::IImmediateManager".

These were added with [8.0.0+].

Cmd	Name
0	#OpenSession
1	#GetTemperatureThresholds
2	#SetTemperature
3	#GetModuleStateTable
4	GetModuleStateTableEvent
5	#GetModuleStateTableMaxCount
6	[15.0.0+]

OpenSession

Takes an input DeviceCode and an input u32. Returns an #IClkrstSession.

GetModuleStateTableMaxCount

Unofficial name.

Returns 0x1A.

IClkrstSession

This is "nn::clkrst::IClkrstSession".

Cmd	Name
0	SetClockEnabled
1	SetClockDisabled
2	SetResetAsserted
3	SetResetDeasserted
4	SetPowerEnabled
5	SetPowerDisabled
6	GetState
7	SetClockRate
8	GetClockRate
9	SetMinVClockRate
10	GetPossibleClockRates
11	GetDvfsTable
12	[14.0.0+]
13	[14.0.0+]

clkrst:a

This is "nn::clkrst::IArbitrationManager".

This was added with [8.0.0+].

Cmd	Name
0	ReleaseControl

ReleaseControl

Takes an input DeviceCode. No output.

rgltr

This is "nn::regulator::IRegulatorManager".

This was added with [8.0.0+].

Cmd	Name
0	#OpenSession
1	#GetPowerDomainStateTable
2	GetPowerDomainStateTableEvent
3	#GetPowerDomainStateTableMaxCount

OpenSession

Takes an input DeviceCode and returns an #IRegulatorSession.

GetPowerDomainStateTableMaxCount

Unofficial name.

Returns 0x3.

IRegulatorSession

This is "nn::regulator::IRegulatorSession".

Cmd	Name
0	SetVoltageEnabled
1	PowerOn
2	GetVoltageEnabled
3	GetVoltageRange
4	GetVoltage
5	SetVoltageValue
6	PowerOff
7	[13.0.0+]
8	[13.0.0+]
9	[13.0.0+]

rtc

This is "nn::rtc::IRtcManager".

This was added with [8.0.0+].

Cmd	Name
0	GetRtcTime
1	SetRtcTime
2	SetUpRtcResetOnShutdown
3	GetRtcResetDetected
4	ClearRtcResetDetected
10	[10.0.0+] EnableRtcAlarm
11	[10.0.0+] DisableRtcAlarm

GetRtcTime

Same as GetRtcTime, but takes an input DeviceCode (bpc:r uses hardcoded value 0x3B000001).

SetRtcTime

Same as SetRtcTime, but takes an input DeviceCode (bpc:r uses hardcoded value 0x3B000001).

SetUpRtcResetOnShutdown

Takes an input bool DoReset and an input DeviceCode. Similar to SetUpRtcResetOnShutdown, but this version assigns the provided boolean value on a per-client basis (instead of a global variable) and checks it when the current power state is ReadyShutdown.

GetRtcResetDetected

Same as GetRtcResetDetected, but takes an input DeviceCode (bpc:r uses hardcoded value 0x3B000001).

ClearRtcResetDetected

Same as ClearRtcResetDetected, but takes an input DeviceCode (bpc:r uses hardcoded value 0x3B000001).

EnableRtcAlarm

Unofficial name.

Takes an input DeviceCode, an input u32 RtcAlarmId (0 = RtcAlarm1, 1 = RtcAlarm2) and an u64 RtcAlarmTime. No output.

DisableRtcAlarm

Unofficial name.

Takes an input DeviceCode and an input u32 RtcAlarmId (0 = RtcAlarm1, 1 = RtcAlarm2). No output.

time:u, time:a, time:s

This is "nn::timesrv::detail::service::IStaticService".

[9.0.0+] These services were moved to Glue and PSC.

Cmd	Name
0	#GetStandardUserSystemClock
1	#GetStandardNetworkSystemClock
2	#GetStandardSteadyClock
3	#GetTimeZoneService
4	#GetStandardLocalSystemClock
5	[4.0.0+] #GetEphemeralNetworkSystemClock
20	[6.0.0+] GetSharedMemoryNativeHandle
30	[6.0.0+] GetStandardNetworkClockOperationEventReadableHandle
31	[6.0.0+] GetEphemeralNetworkClockOperationEventReadableHandle
50	[4.0.0+] SetStandardSteadyClockInternalOffset
100	IsStandardUserSystemClockAutomaticCorrectionEnabled
101	SetStandardUserSystemClockAutomaticCorrectionEnabled
102	[5.0.0+] GetStandardUserSystemClockInitialYear
200	[3.0.0+] IsStandardNetworkSystemClockAccuracySufficient
201	[6.0.0+] GetStandardUserSystemClockAutomaticCorrectionUpdatedTime
300	[4.0.0+] CalculateMonotonicSystemClockBaseTimePoint
400	[4.0.0+] GetClockSnapshot
401	[4.0.0+] GetClockSnapshotFromSystemClockContext
500	[4.0.0+] CalculateStandardUserSystemClockDifferenceByUser
501	[4.0.0+] CalculateSpanBetween

GetStandardUserSystemClock

No input. Returns an #ISystemClock.

GetStandardNetworkSystemClock

No input. Returns an #ISystemClock.

GetStandardSteadyClock

No input. Returns an #ISteadyClock.

GetTimeZoneService

No input. Returns an #ITimeZoneService.

GetStandardLocalSystemClock

No input. Returns an #ISystemClock.

GetEphemeralNetworkSystemClock

No input. Returns an #ISystemClock.

ISteadyClock

This is "nn::timesrv::detail::service::ISteadyClock".

Cmd	Name
0	#GetCurrentTimePoint
2	#GetTestOffset
3	#SetTestOffset
100	[2.0.0+] #GetRtcValue
101	[2.0.0+] #IsRtcResetDetected
102	[2.0.0+] #GetSetupResultValue
200	[3.0.0+] #GetInternalOffset
201	[3.0.0-3.0.2] #SetInternalOffset

GetCurrentTimePoint

No input. Returns an output #SteadyClockTimePoint.

GetTestOffset

No input. Returns an output #TimeSpanType.

SetTestOffset

Takes an input #TimeSpanType. No output.

GetRtcValue

No input. Returns an output s64.

IsRtcResetDetected

No input. Returns an output u8 bool.

GetSetupResultValue

No input. Returns an output u32.

GetInternalOffset

No input. Returns an output #TimeSpanType.

SetInternalOffset

Takes an input #TimeSpanType. No output.

ISystemClock

This is "nn::timesrv::detail::service::ISystemClock".

Cmd	Name
0	#GetCurrentTime
1	#SetCurrentTime
2	#GetSystemClockContext
3	#SetSystemClockContext
4	[9.0.0+] GetOperationEventReadableHandle

GetCurrentTime

No input. Returns an output #PosixTime.

SetCurrentTime

Takes an input #PosixTime. No output.

GetSystemClockContext

No input. Returns an output #SystemClockContext.

SetSystemClockContext

Takes an input #SystemClockContext. No output.

ITimeZoneService

This is "nn::timesrv::detail::service::ITimeZoneService".

Cmd	Name
0	#GetDeviceLocationName
1	#SetDeviceLocationName
2	#GetTotalLocationNameCount
3	#LoadLocationNameList
4	#LoadTimeZoneRule
5	[2.0.0+] #GetTimeZoneRuleVersion
6	[5.0.0+] GetDeviceLocationNameAndUpdatedTime
100	#ToCalendarTime
101	#ToCalendarTimeWithMyRule
201	#ToPosixTime
202	#ToPosixTimeWithMyRule

GetDeviceLocationName

No input. Returns an output #LocationName.

SetDeviceLocationName

Takes an input #LocationName. No output.

GetTotalLocationNameCount

No input. Returns an output s32.

LoadLocationNameList

Takes an input s32 LocationName_index and a type-0x6 output buffer for #LocationName. Returns an output s32 for total output entries.

LoadTimeZoneRule

Takes an input #LocationName and a type-0x16 output buffer for #TimeZoneRule. No output.

GetTimeZoneRuleVersion

No input. Returns an output #TimeZoneRuleVersion.

ToCalendarTime

Takes an input #PosixTime and a type-0x15 input buffer for #TimeZoneRule. Returns an output #CalendarTime and #CalendarAdditionalInfo.

ToCalendarTimeWithMyRule

Takes an input #PosixTime. Returns an output #CalendarTime and #CalendarAdditionalInfo.

ToPosixTime

Takes an input #CalendarTime, a type-0x15 input buffer for #TimeZoneRule, an type-0xA output buffer for #PosixTime array.R eturns an output s32.

ToPosixTimeWithMyRule

Takes an input #CalendarTime, an type-0xA output buffer for #PosixTime array. Returns an output s32.

BoardPowerControlEventTarget

This is "nn::bpc::BoardPowerControlEventTarget".

SleepButtonState

This is "nn::bpc::SleepButtonState".

EventTarget

This is "nn::bpc::EventTarget".

Module

This is "nn::pcv::Module".

Value	Name	DeviceCode	Rail
0	Cpu	0x40000001	VddCpu
1	Gpu	0x40000002	VddGpu
2	I2s1	0x40000003	VddSoc
3	I2s2	0x40000004	VddSoc
4	I2s3	0x40000005	VddSoc
5	Pwm	0x40000006	VddSoc
6	I2c1	0x02000001	VddSoc
7	I2c2	0x02000002	VddSoc
8	I2c3	0x02000003	VddSoc
9	I2c4	0x02000004	VddSoc
10	I2c5	0x02000005	VddSoc
11	I2c6	0x02000006	VddSoc
12	Spi1	0x07000000	VddSoc
13	Spi2	0x07000001	VddSoc
14	Spi3	0x07000002	VddSoc
15	Spi4	0x07000003	VddSoc
16	Disp1	0x40000011	VddSoc
17	Disp2	0x40000012	VddSoc
18	Isp	0x40000013	None
19	Vi	0x40000014	None
20	Sdmmc1	0x40000015	VddSoc
21	Sdmmc2	0x40000016	VddSoc
22	Sdmmc3	0x40000017	VddSoc
23	Sdmmc4	0x40000018	VddSoc
24	Owr	0x40000019	None
25	Csite	0x4000001A	VddSoc
26	Tsec	0x4000001B	VddSoc
27	Mselect	0x4000001C	VddSoc
28	Hda2codec2x	0x4000001D	VddSoc
29	Actmon	0x4000001E	VddSoc
30	I2cSlow	0x4000001F	VddSoc
31	Sor1	0x40000020	VddSoc
32	Sata	0x40000021	None
33	Hda	0x40000022	VddSoc
34	XusbCoreHostSrc	0x40000023	VddSoc
35	XusbFalconSrc	0x40000024	VddSoc
36	XusbFsSrc	0x40000025	VddSoc
37	XusbCoreDevSrc	0x40000026	VddSoc
38	XusbSsSrc	0x40000027	VddSoc
39	UartA	0x03000001	VddSoc
40	UartB	0x35000405	VddSoc
41	UartC	0x3500040F	VddSoc
42	UartD	0x37000001	VddSoc
43	Host1x	0x4000002C	VddSoc
44	Entropy	0x4000002D	VddSoc
45	SocTherm	0x4000002E	VddSoc
46	Vic	0x4000002F	VddSoc
47	Nvenc	0x40000030	VddSoc
48	Nvjpg	0x40000031	VddSoc
49	Nvdec	0x40000032	VddSoc
50	Qspi	0x40000033	VddSoc
51	ViI2c	0x40000034	None
52	Tsecb	0x40000035	VddSoc
53	Ape	0x40000036	VddSoc
54	AudioDsp	0x40000037	VddSoc
55	AudioUart	0x40000038	VddSoc
56	Emc	0x40000039	VddSoc
57	Plle	0x4000003A	VddSoc
58	PlleHwSeq	0x4000003B	VddSoc
59	Dsi	0x4000003C	VddSoc
60	Maud	0x4000003D	VddSoc
61	Dpaux1	0x4000003E	VddSoc
62	MipiCal	0x4000003F	VddSoc
63	UartFstMipiCal	0x40000040	VddSoc
64	Osc	0x40000041	VddSoc
65	SysBus	0x40000042	VddSoc
66	SorSafe	0x40000043	VddSoc
67	XusbSs	0x40000044	VddSoc
68	XusbHost	0x40000045	VddSoc
69	XusbDevice	0x40000046	VddSoc
70	Extperiph1	0x40000047	VddSoc
71	Ahub	0x40000048	VddSoc
72	Hda2hdmicodec	0x40000049	VddSoc
73	Gpuaux	0x4000004A	VddSoc
74	UsbD	0x4000004B	VddSoc
75	Usb2	0x4000004C	VddSoc
76	Pcie	0x4000004D	VddSoc
77	Afi	0x4000004E	VddSoc
78	PciExClk	0x4000004F	VddSoc
79	PExUsbPhy	0x40000050	VddSoc
80	XUsbPadCtl	0x40000051	VddSoc
81	Apbdma	0x40000052	VddSoc
82	Usb2TrkClk	0x40000053	VddSoc
83	XUsbIoPll	0x40000054	VddSoc
84	XUsbIoPllHwSeq	0x40000055	VddSoc
85	Cec	0x40000056	VddSoc
[6.0.0+] 86	Extperiph2	0x40000057	VddSoc
[8.0.0+] -	OscClk	0x40000080	None

PowerDomain

This is "nn::pcv::PowerDomain".

Value	Name	DeviceCode	Description
0	Max77620_Sd0	0x3A000080	SoC (1.125v)
1	Max77620_Sd1	0x3A000081	Dram (1.1v)
2	Max77620_Sd2	0x3A000082	Ldo0, Ldo1, Ldo7, Ldo8 (1.325v)
3	Max77620_Sd3	0x3A000083	Reserved (1.8v)
4	Max77620_Ldo0	0x3A0000A0	Panel (1.2v)
5	Max77620_Ldo1	0x3A0000A1	Xusb, PCIe (1.05v)
6	Max77620_Ldo2	0x3A0000A2	SdCard (1.8v, 3.3v)
7	Max77620_Ldo3	0x3A0000A3	GcCard (3.1v)
8	Max77620_Ldo4	0x3A0000A4	Rtc (0.85v)
9	Max77620_Ldo5	0x3A0000A5	GcCard (1.8v)
10	Max77620_Ldo6	0x3A0000A6	TouchPanel, ALS (2.9v)
11	Max77620_Ldo7	0x3A0000A7	Xusb (1.05v)
12	Max77620_Ldo8	0x3A0000A8	DisplayPort, HDMI, SioMcu (1.05v)
13	Max77621_Cpu	0x3A000003
14	Max77621_Gpu	0x3A000004
[6.0.0+] 15	Max77812_Cpu	0x3A000003
[6.0.0+] 16	Max77812_Gpu	0x3A000004
[6.0.0+] 17	Max77812_Dram	0x3A000005

PowerControlTarget

This is "nn::pcv::PowerControlTarget".

Value	Name	DeviceCode	Description
0		0x3C000004	SdCard (Ldo2)
[6.0.0+] 1		0x34000007	DisplayPort, HDMI (Ldo8)
[6.0.0+] 2			Debug (Ldo7, Hoag only)
[6.0.0+] 3		0x3500041A	SioMcu (Ldo8, Hoag only)
[14.0.0+] -		0x3C000404	GcCard (Ldo3)
[14.0.0+] -		0x3C000405	GcCard (Ldo5)

ModuleState

This is "nn::pcv::ModuleState".

Offset	Size	Description
0x0	0x4	ClockFrequency
0x4	0x1	ClockEnabled
0x5	0x1	PowerEnabled
0x6	0x1	ResetAsserted
0x7	0x1	Reserved
0x8	0x4	MinVClockRate

PowerDomainState

This is "nn::pcv::PowerDomainState".

Offset	Size	Description
0x0	0x1	Enabled
0x1	0x3	Reserved
0x4	0x4	Voltage

TemperatureThreshold

This is "nn::pcv::TemperatureThreshold".

Offset	Size	Description
0x0	0x4	MinMilliC
0x4	0x4	MaxMilliC

ClockRatesListType

This is "nn::pcv::ClockRatesListType".

Value	Description
0	Invalid
1	Discrete
2	Range

SteadyClockTimePoint

This is a 0x18-byte struct.

Offset	Size	Description
0x0	0x8	A u64 representing a point in time.
0x8	0x10	An ID representing the clock source.

TimeSpanType

This is an u64.

PosixTime

This is an s64 for UTC POSIX time.

SystemClockContext

This is an 0x20-byte struct.

Offset	Size	Description
0x0	0x8	a #PosixTime representing the system clock epoch.
0x8	0x18	a #SteadyClockTimePoint

LocationName

This contains a TimeZone location string with a max size of 0x24 bytes.

TimeZoneRule

This is an 0x4000-byte struct. Official sw uses fixed-size 0x4000 for the buffer size with the above commands.

This is loaded from the TimeZoneBinary title with the specified LocationName under the zoneinfo/ directory, the content is then converted into this TimeZoneRule structure.

The files contained under zoneinfo/ directory are Tzif2 files without Tzif1 header and data at the begining of them (see RFC8536 for more information).

The conversion of a Tzif2 file to a TimeZoneRule structure is based on tz database code with some custom modifications (Leap seconds aren't handled, no usage of "posixrules" and Tzif1 support stripped out).

Offset	Size	Description
0x0	0x4	timecnt
0x4	0x4	typecnt
0x8	0x4	charcnt
0xC	0x1	goback
0xD	0x1	goahead
0xE	0x2	Padding
0x10	0x8 * 1000	ats
0x1f50	0x1 * 1000	types
0x2338	0x10 * 128	ttis (time type information), struct ttinfo[1000]
0x2b38	0x1 * 512	chars
0x2d38	0x4	defaulttype
0x2d3c	0x12c4	Reserved / Unused

ttinfo

This is an 0x10-byte struct. Represents a Time Type Information used in #TimeZoneRule.

Offset	Size	Description
0x0	0x4	tt_gmtoff
0x4	0x1	tt_isdst
0x5	0x3	Padding
0x8	0x4	tt_abbrind
0xC	0x1	tt_ttisstd
0xD	0x1	tt_ttisgmt
0xE	0x2	Padding

TimeZoneRuleVersion

This is an u128.

CalendarTime

This is an 0x8-byte struct.

Offset	Size	Description
0x0	0x2	Year
0x2	0x1	Month
0x3	0x1	Day
0x4	0x1	Hour
0x5	0x1	Minute
0x6	0x1	Second
0x7	0x1	Padding / unknown?

CalendarAdditionalInfo

This is an 0x18-byte struct. This stores timezone info.

Offset	Size	Description
0x0	0x4	0-based day-of-week.
0x4	0x4	0-based day-of-year.
0x8	0x8	Timezone name string.
0x10	0x4	0 = no DST, 1 = DST.
0x14	0x4	s32 seconds relative to UTC for this timezone.