SceRtc: Difference between revisions

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(Swapped Module <-> Library, see revision 1.1 under "Revision History" of "Vita SDK specifications" (https://wiki.henkaku.xyz/vita/File:Vita_SDK_specifications.pdf))
 
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Real Time Clock.
== Module ==
== Module ==


=== Known NIDs ===
{| class="wikitable"
{| class="wikitable"
|-
|-
! Version !! Name !! World !! Privilege !! NID
! Version !! World !! Privilege
|-
|-
| 1.69 || SceRtc || Non-secure || Kernel || 0x72D38B0A
| 0.931.010-3.740.011 || Non-secure || Kernel
|}
|}


Line 17: Line 18:
! Version !! Name !! World !! Visibility !! NID
! Version !! Name !! World !! Visibility !! NID
|-
|-
| 1.69 || [[SceRtc#SceRtcForDriver|SceRtcForDriver]] || Non-secure || Kernel || 0x351D827
| 0.920-3.740.011 || [[SceRtc#SceRtcForDriver|SceRtcForDriver]] || Non-secure || Kernel || 0x0351D827
|-
| 0.931.010-3.740.011 || [[SceRtc#SceRtc|SceRtc]] || Non-secure || User || 0x3503487E
|}
 
== Types ==
 
<source lang="C">
typedef struct SceRtcTickBase { // size is 0x28-bytes
SceRtcTick tick_src_0;
SceRtcTick tick_dst_0;
int unk_0x10;
int unk_0x14;
int tick_flags_0;
int unk_0x1C;
int unk_0x20;
int unk_0x24;
} SceRtcTickBase;
 
// internal use. From SceRtc_data + 0x38
typedef struct SceRtcTickContext { // size is 0x140-bytes
SceRtcTickBase current_secure_tick;
SceRtcTickBase current_retained_network_tick;
SceRtcTickBase current_tool_secure_tick;
SceRtcTickBase current_gps_tick;
SceRtcTickBase current_debug_network_tick;
SceRtcTickBase unk_tick_5;
SceRtcTickBase unk_tick_6;
SceRtcTickBase unk_tick_7;
} SceRtcTickContext;
</source>
 
== Information ==
 
If some ticks in rtc are lower than the constant set in SceRtc, those ticks are set to 0.
 
constant list per fw.
 
{| class="wikitable"
|-
! Version !! date
|-
| 1.00 - 1.67 || 2011/08/01
|-
| 1.80 || 2012/06/01
|-
| 2.00 - 2.xx || 2012/09/01
|-
| 2.50 - 3.00 || 2013/01/01
|-
| 3.30 || 2014/01/01
|-
|-
| 1.69 || [[SceRtc#SceRtc|SceRtc]] || Non-secure || User || 0x3503487E
| 3.50 - 3.74 || 2015/01/01
|}
|}


== SceRtcForDriver ==
== SceRtcForDriver ==
=== sceRtcCompareTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 0.920-3.740.011 || 0x0EBB3F12
|}
Returns 0 if tick_1 == tick_2, -1 if tick_1 < tick_2 and 1 else.
<source lang="C">int sceRtcCompareTickForDriver(const SceRtcTick *tick_1, const SceRtcTick *tick_2);</source>
=== sceRtcConvertLocalTimeToUtcForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xAD2F3544
|}
=== sceRtcConvertUtcToLocalTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xC6E03DD4
|}
=== sceRtcFormatRFC2822ForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xBA3415F8
|}
=== sceRtcFormatRFC2822LocalTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x1F7FC209
|}
=== sceRtcFormatRFC3339ForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xD32AC698
|}
<source lang="C">int sceRtcFormatRFC3339ForDriver(char *pszDateTime, const SceRtcTick *utc, int iTimeZoneMinutes);</source>
=== sceRtcFormatRFC3339LocalTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x35925318
|}
=== sceRtcGetAccumulativeTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x0A86FB04
|}
=== sceRtcGetAlarmTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xC838275A
|}
=== sceRtcGetCurrentAdNetworkTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x3E3C09A0
|}
=== sceRtcGetCurrentClockForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xA930CD1A
|}
=== sceRtcGetCurrentClockLocalTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x7DC0DF93
|}
=== sceRtcGetCurrentDebugNetworkTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xC141632A
|}
=== sceRtcGetCurrentGpsTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xF69B610F
|}
=== sceRtcGetCurrentNetworkTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xF1517B38
|}
If the current NetworkTick is less than 2015/01/01, the system will ignore the registry setting and update the NetworkTick from the internet.
<source lang="C">int sceRtcGetCurrentNetworkTickForDriver(SceRtcTick *tick);</source>
=== sceRtcGetCurrentRetainedNetworkTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x40B4BCFF
|}
=== sceRtcGetCurrentTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xDEC408D4
|}
=== sceRtcGetCurrentSecureTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 1.03-3.60 || 0x401C0954
|}
If the current SecureTick is less than 2015/01/01, it sets 0xDDDEF8B3A14000(1980/01/01 00:00:00 UTC) to the Secure Tick and returns error code 0x80251002.
<source lang="C">int sceRtcGetCurrentSecureTickForDriver(SceRtcTick *tick);</source>
=== sceRtcConvertTickToDateTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 1.03-3.60 || 0x42A0DFCB
|}
This is a guessed name.
Maybe reverse function of [[#sceRtcConvertDateTimeToTickForDriver]].
Used with the result of [[#sceRtcGetCurrentSecureTickForDriver]]. Used by [[SceCoredump]], [[SceSblGcAuthMgr]].
<source lang="C">int sceRtcConvertTickToDateTimeForDriver(SceDateTime *dst, SceRtcTick *src);</source>
=== sceRtcTickAddMinuteForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x0F9E02EF
|}
This is guessed name.
Converts a time into a SceRtcTick for use e.g. with [[#sceRtcConvertTickToDateTimeForDriver]].
<source lang="C">int sceRtcTickAddMinuteForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 seconds);</source>
=== SceRtcForDriver_DE9F4515 ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xDE9F4515
|}
It does: <code>src * 1000000 + 0xdcbffeff2bc000</code> so src is maybe of type SceRtcTick or just a time in microseconds.
<source lang="C">int SceRtcForDriver_DE9F4515(SceDateTime* dst, SceUInt32 src);</source>
=== sceRtcConvertDateTimeToTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 0.990.000-3.740.011 || 0xF139E359
|}
This is a guessed name.
Maybe reverse function of [[#sceRtcConvertTickToDateTimeForDriver]].
<source lang="C">int sceRtcConvertDateTimeToTickForDriver(SceDateTime* src, SceRtcTick *dst);</source>
=== sceRtcConvertDateTimeToUnixTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x497B5DC9
|}
This is a guessed name.
Used by [[SceCoredump]].
<source lang="C">int sceRtcConvertDateTimeToUnixTimeForDriver(const SceDateTime *src, SceUInt64 *dst);</source>
=== sceRtcSetCurrentAuxTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 0.990.000-3.740.011 || 0xA7236656
|}
<source lang="C">int sceRtcSetCurrentAuxTickForDriver(SceRtcTick *tick);</source>
=== sceRtcGetLastAdjustedTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x8A987573
|}
=== sceRtcGetLastReincarnatedTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x3D614A9A
|}
=== sceRtcGetSecureAlarmTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xBD53731C
|}
=== sceRtcSynchronizeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60-3.74 || 0xA2D280B4
|}
Initializes SceRtc internal flags.
<source lang="C">int sceRtcSynchronizeForDriver(void);</source>
=== SceRtcForDriver_ABA035B7 ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xABA035B7
|}
Reset all SceRtc internal flags to 0.
Returns 0.
<source lang="C">int SceRtcForDriver_ABA035B7(void);</source>
=== sceRtcGetCurrentToolSecureTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 0.990-3.60 || 0xA0D7899A
|}
This is a guessed name.
Used on Tool only. Used when checking DevKit activation license expire date.
Creates a tick using [[SceKernelThreadMgr#sceKernelGetSystemTimeWideForDriver]].
<source lang="C">int sceRtcGetCurrentToolSecureTickForDriver(SceRtcTick *pTick);</source>
=== sceRtcIsAlarmedForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xCD295F0C
|}
=== sceRtcIsSecureAlarmedForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xE39F2ABE
|}
=== sceRtcRegisterCallbackForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x5220870D
|}
=== sceRtcRegisterSecureAlarmCallbackForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xCF84DFC0
|}
=== sceRtcSetAlarmTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xD610C646
|}
=== sceRtcSetConfForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xACFE5A9F
|}
=== sceRtcSetCurrentDebugNetworkTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xAAB6053F
|}
=== sceRtcSetCurrentNetworkTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x162E486E
|}
=== sceRtcSetCurrentSecureTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x7D431C87
|}
=== sceRtcSetCurrentTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x70A78CD2
|}
=== sceRtcSetSecureAlarmTickForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x8333790D
|}
=== sceRtcUnregisterCallbackForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x9546C68B
|}
=== sceRtcUnregisterSecureAlarmCallbackForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xEDDC2325
|}
=== sceRtcTickAddSecondForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 0.931-3.60 || 0x9C8AF264
|}
This is guessed name.
Adds time (in second) to a time structure (in nanosecond).
<source lang="C">int sceRtcTickAddSecondForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 seconds);</source>
=== SceRtcForDriver_CE51C2A1 ===
{| class="wikitable"
|-
! Version !! NID
|-
| 0.931-3.60 || 0xCE51C2A1
|}
Adds time (in microseconds) to a time structure (in nanosecond).
<source lang="C">int SceRtcForDriver_CE51C2A1(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 microseconds);</source>
=== sceRtcTickAddMicroSecondForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0xA82AC5B3
|}
This is guessed name.
<source lang="C">int sceRtcTickAddMicroSecondForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 microseconds);</source>
=== sceRtcTickAddDayForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x0CB72FAF
|}
This is guessed name.
Used by [[SceCompat#sceCompatSetUpdateState]].
<source lang="C">int sceRtcTickAddDayForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt32 days);</source>
=== SceRtcForDriver_FFD7A04F ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xFFD7A04F
|}
Used indirectly by [[SceProcessmgr#sceKernelLibcTime]].
=== SceRtcForDriver_9097EF0D ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x9097EF0D
|}
Used indirectly by [[SceProcessmgr]].
=== SceRtcForDriver_0F800878 ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x0F800878
|}
Used indirectly by [[SceProcessmgr]].
<source lang="C">int SceRtcForDriver_0F800878(SceUInt32 year, SceUInt32 month, SceUInt32 day)</source>
=== sceRtcIsValidDateTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0xADF63D7C
|}
This is guessed name.
<source lang="C">int sceRtcIsValidDateTimeForDriver(const SceDateTime *pDateTime);</source>
=== sceRtcConvertDateTimeToFatTimeForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0x09AF419B
|}
This is guessed name.
<source lang="C">int sceRtcConvertDateTimeToFatTimeForDriver(const SceDateTime *pDateTime, SceUInt32 *pFatTime);</source>
=== sceRtcTickAddWeekForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0x24209FBF
|}
This is guessed name.
<source lang="C">int sceRtcTickAddWeekForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt32 weeks);</source>
=== sceRtcTickAddHourForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0x32E50C36
|}
This is guessed name.
<source lang="C">int sceRtcTickAddHourForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt32 hours);</source>
=== sceRtcGetOneSecondForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0x6965E5DF
|}
This is guessed name.
<source lang="C">SceUInt32 sceRtcGetOneSecondForDriver(void);</source>
=== sceRtcIsLeepYearForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0x6F96FAA5
|}
This is guessed name.
<source lang="C">SceBool sceRtcIsLeepYearForDriver(SceUInt32 year);</source>
=== SceRtcForDriver_A1F41AE2 ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0xA1F41AE2
|}
<source lang="C">int SceRtcForDriver_A1F41AE2(SceRtcTick *pTick, const char *str);</source>
=== SceRtcForDriver_BA14600F ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0xBA14600F
|}
It may be related to FILETIME on Windows.
<source lang="C">int SceRtcForDriver_BA14600F(SceRtcTick *pDst, SceUInt64 a2);</source>
=== sceRtcGetMonthDayCountForDriver ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.200.010 || 0xC2DC38D9
|}
This is guessed name.
<source lang="C">int sceRtcGetMonthDayCountForDriver(SceUInt32 year, SceUInt32 month);</source>


== SceRtc ==
== SceRtc ==
Line 31: Line 680:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x6F734FE
| 1.69-3.60 || 0x06F734FE
|}
|}
=== _sceRtcConvertLocalTimeToUtc ===
=== _sceRtcConvertLocalTimeToUtc ===
{| class="wikitable"
{| class="wikitable"
Line 38: Line 688:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0xFC8AC41
| 1.69-3.60 || 0x0FC8AC41
|}
|}
=== _sceRtcConvertUtcToLocalTime ===
=== _sceRtcConvertUtcToLocalTime ===
{| class="wikitable"
{| class="wikitable"
Line 45: Line 696:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x1E61DDA4
| 1.69-3.60 || 0x1E61DDA4
|}
|}
=== _sceRtcGetCurrentTick ===
=== _sceRtcGetCurrentTick ===
{| class="wikitable"
{| class="wikitable"
Line 52: Line 704:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x247EE33B
| 1.69-3.60 || 0x247EE33B
|}
|}
=== _sceRtcGetCurrentClock ===
=== _sceRtcGetCurrentClock ===
{| class="wikitable"
{| class="wikitable"
Line 59: Line 712:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x24947354
| 1.69-3.60 || 0x24947354
|}
|}
=== sceRtcGetAccumulativeTime ===
=== sceRtcGetAccumulativeTime ===
{| class="wikitable"
{| class="wikitable"
Line 66: Line 720:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x258BE8EC
| 1.69-3.60 || 0x258BE8EC
|}
|}
=== _sceRtcFormatRFC2822 ===
=== _sceRtcFormatRFC2822 ===
{| class="wikitable"
{| class="wikitable"
Line 73: Line 728:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x2CD6AC86
| 1.69-3.60 || 0x2CD6AC86
|}
|}
=== _sceRtcGetCurrentGpsTick ===
=== _sceRtcGetCurrentGpsTick ===
{| class="wikitable"
{| class="wikitable"
Line 80: Line 736:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x3BA820E5
| 1.69-3.60 || 0x3BA820E5
|}
|}
=== _sceRtcGetCurrentClockLocalTime ===
=== _sceRtcGetCurrentClockLocalTime ===
{| class="wikitable"
{| class="wikitable"
Line 87: Line 744:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x41A6C861
| 1.69-3.60 || 0x41A6C861
|}
|}
=== _sceRtcFormatRFC3339LocalTime ===
=== _sceRtcFormatRFC3339LocalTime ===
{| class="wikitable"
{| class="wikitable"
Line 94: Line 752:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x4836474D
| 1.69-3.60 || 0x4836474D
|}
|}
=== _sceRtcFormatRFC2822LocalTime ===
=== _sceRtcFormatRFC2822LocalTime ===
{| class="wikitable"
{| class="wikitable"
Line 101: Line 760:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x4C7ED349
| 1.69-3.60 || 0x4C7ED349
|}
|}
=== _sceRtcFormatRFC3339 ===
=== _sceRtcFormatRFC3339 ===
{| class="wikitable"
{| class="wikitable"
Line 108: Line 768:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0x7EE2CBEF
| 1.69-3.60 || 0x7EE2CBEF
|}
|}
=== _sceRtcGetCurrentRetainedNetworkTick ===
=== _sceRtcGetCurrentRetainedNetworkTick ===
{| class="wikitable"
{| class="wikitable"
Line 115: Line 776:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0xC17EA809
| 1.69-3.60 || 0xC17EA809
|}
|}
=== _sceRtcGetLastReincarnatedTick ===
=== _sceRtcGetLastReincarnatedTick ===
{| class="wikitable"
{| class="wikitable"
Line 122: Line 784:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0xE13D0FE5
| 1.69-3.60 || 0xE13D0FE5
|}
|}
=== _sceRtcGetLastAdjustedTick ===
=== _sceRtcGetLastAdjustedTick ===
{| class="wikitable"
{| class="wikitable"
Line 129: Line 792:
! Version !! NID
! Version !! NID
|-
|-
| 1.69 || 0xEA157EC5
| 1.69-3.60 || 0xEA157EC5
|}
|}
=== _sceRtcGetCurrentAdNetworkTick ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0x76EFA8FE
|}
=== _sceRtcGetCurrentDebugNetworkTick ===
{| class="wikitable"
|-
! Version !! NID
|-
| 3.60 || 0xBF639B21
|}
== How to get current time and date ==
Getting the current time and date involves [[Ernie#Syscon_Scratch_Pad|Syscon scratchpad]] and [[SceSyscon#sceSysconGetClockForDriver|Syscon command 0x11]]. Syscon command 0x11 returns twice the number of seconds Syscon has been running since its power on. Syscon scratchpad contains at offset 0x10 the timestamp when Syscon "started" running. It is stored in the following format: microseconds since 01/01/0001 and divided by 2^19. By adding those values together, the OS obtains the current time and date.
In pseudocode:
<source lang="python">
last_reincarnated_tick = syscon_read_scratchpad(offset=0x10, size=5)
up_time_half_seconds = syscon_cmd_read(cmd=0x11, size=4)
UTC = timedelta(microseconds=last_reincarnated_tick * (1<<19)) + datetime(1, 1, 1) + timedelta(seconds=up_time_half_seconds*2)
</source>
[[Category:ARM]]
[[Category:Kernel]]
[[Category:Modules]]
[[Category:Modules]]
[[Category:Kernel]]
[[Category:Library]]

Latest revision as of 15:54, 19 April 2025

Real Time Clock.

Module

Version World Privilege
0.931.010-3.740.011 Non-secure Kernel

Libraries

Known NIDs

Version Name World Visibility NID
0.920-3.740.011 SceRtcForDriver Non-secure Kernel 0x0351D827
0.931.010-3.740.011 SceRtc Non-secure User 0x3503487E

Types

typedef struct SceRtcTickBase { // size is 0x28-bytes
	SceRtcTick tick_src_0;
	SceRtcTick tick_dst_0;
	int unk_0x10;
	int unk_0x14;
	int tick_flags_0;
	int unk_0x1C;
	int unk_0x20;
	int unk_0x24;
} SceRtcTickBase;

// internal use. From SceRtc_data + 0x38
typedef struct SceRtcTickContext { // size is 0x140-bytes
	SceRtcTickBase current_secure_tick;
	SceRtcTickBase current_retained_network_tick;
	SceRtcTickBase current_tool_secure_tick;
	SceRtcTickBase current_gps_tick;
	SceRtcTickBase current_debug_network_tick;
	SceRtcTickBase unk_tick_5;
	SceRtcTickBase unk_tick_6;
	SceRtcTickBase unk_tick_7;
} SceRtcTickContext;

Information

If some ticks in rtc are lower than the constant set in SceRtc, those ticks are set to 0.

constant list per fw.

Version date
1.00 - 1.67 2011/08/01
1.80 2012/06/01
2.00 - 2.xx 2012/09/01
2.50 - 3.00 2013/01/01
3.30 2014/01/01
3.50 - 3.74 2015/01/01

SceRtcForDriver

sceRtcCompareTickForDriver

Version NID
0.920-3.740.011 0x0EBB3F12

Returns 0 if tick_1 == tick_2, -1 if tick_1 < tick_2 and 1 else. 

int sceRtcCompareTickForDriver(const SceRtcTick *tick_1, const SceRtcTick *tick_2);

sceRtcConvertLocalTimeToUtcForDriver

Version NID
3.60 0xAD2F3544

sceRtcConvertUtcToLocalTimeForDriver

Version NID
3.60 0xC6E03DD4

sceRtcFormatRFC2822ForDriver

Version NID
3.60 0xBA3415F8

sceRtcFormatRFC2822LocalTimeForDriver

Version NID
3.60 0x1F7FC209

sceRtcFormatRFC3339ForDriver

Version NID
3.60 0xD32AC698 
int sceRtcFormatRFC3339ForDriver(char *pszDateTime, const SceRtcTick *utc, int iTimeZoneMinutes);

sceRtcFormatRFC3339LocalTimeForDriver

Version NID
3.60 0x35925318

sceRtcGetAccumulativeTimeForDriver

Version NID
3.60 0x0A86FB04

sceRtcGetAlarmTickForDriver

Version NID
3.60 0xC838275A

sceRtcGetCurrentAdNetworkTickForDriver

Version NID
3.60 0x3E3C09A0

sceRtcGetCurrentClockForDriver

Version NID
3.60 0xA930CD1A

sceRtcGetCurrentClockLocalTimeForDriver

Version NID
3.60 0x7DC0DF93

sceRtcGetCurrentDebugNetworkTickForDriver

Version NID
3.60 0xC141632A

sceRtcGetCurrentGpsTickForDriver

Version NID
3.60 0xF69B610F

sceRtcGetCurrentNetworkTickForDriver

Version NID
3.60 0xF1517B38

If the current NetworkTick is less than 2015/01/01, the system will ignore the registry setting and update the NetworkTick from the internet. 

int sceRtcGetCurrentNetworkTickForDriver(SceRtcTick *tick);

sceRtcGetCurrentRetainedNetworkTickForDriver

Version NID
3.60 0x40B4BCFF

sceRtcGetCurrentTickForDriver

Version NID
3.60 0xDEC408D4

sceRtcGetCurrentSecureTickForDriver

Version NID
1.03-3.60 0x401C0954

If the current SecureTick is less than 2015/01/01, it sets 0xDDDEF8B3A14000(1980/01/01 00:00:00 UTC) to the Secure Tick and returns error code 0x80251002. 

int sceRtcGetCurrentSecureTickForDriver(SceRtcTick *tick);

sceRtcConvertTickToDateTimeForDriver

Version NID
1.03-3.60 0x42A0DFCB

This is a guessed name.

Maybe reverse function of #sceRtcConvertDateTimeToTickForDriver.

Used with the result of #sceRtcGetCurrentSecureTickForDriver. Used by SceCoredump, SceSblGcAuthMgr. 

int sceRtcConvertTickToDateTimeForDriver(SceDateTime *dst, SceRtcTick *src);

sceRtcTickAddMinuteForDriver

Version NID
3.60 0x0F9E02EF

This is guessed name.

Converts a time into a SceRtcTick for use e.g. with #sceRtcConvertTickToDateTimeForDriver. 

int sceRtcTickAddMinuteForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 seconds);

SceRtcForDriver_DE9F4515

Version NID
3.60 0xDE9F4515

It does: src * 1000000 + 0xdcbffeff2bc000 so src is maybe of type SceRtcTick or just a time in microseconds. 

int SceRtcForDriver_DE9F4515(SceDateTime* dst, SceUInt32 src);

sceRtcConvertDateTimeToTickForDriver

Version NID
0.990.000-3.740.011 0xF139E359

This is a guessed name.

Maybe reverse function of #sceRtcConvertTickToDateTimeForDriver. 

int sceRtcConvertDateTimeToTickForDriver(SceDateTime* src, SceRtcTick *dst);

sceRtcConvertDateTimeToUnixTimeForDriver

Version NID
3.60 0x497B5DC9

This is a guessed name.

Used by SceCoredump. 

int sceRtcConvertDateTimeToUnixTimeForDriver(const SceDateTime *src, SceUInt64 *dst);

sceRtcSetCurrentAuxTickForDriver

Version NID
0.990.000-3.740.011 0xA7236656 
int sceRtcSetCurrentAuxTickForDriver(SceRtcTick *tick);

sceRtcGetLastAdjustedTickForDriver

Version NID
3.60 0x8A987573

sceRtcGetLastReincarnatedTickForDriver

Version NID
3.60 0x3D614A9A

sceRtcGetSecureAlarmTickForDriver

Version NID
3.60 0xBD53731C

sceRtcSynchronizeForDriver

Version NID
3.60-3.74 0xA2D280B4

Initializes SceRtc internal flags. 

int sceRtcSynchronizeForDriver(void);

SceRtcForDriver_ABA035B7

Version NID
3.60 0xABA035B7

Reset all SceRtc internal flags to 0.

Returns 0. 

int SceRtcForDriver_ABA035B7(void);

sceRtcGetCurrentToolSecureTickForDriver

Version NID
0.990-3.60 0xA0D7899A

This is a guessed name.

Used on Tool only. Used when checking DevKit activation license expire date.

Creates a tick using SceKernelThreadMgr#sceKernelGetSystemTimeWideForDriver. 

int sceRtcGetCurrentToolSecureTickForDriver(SceRtcTick *pTick);

sceRtcIsAlarmedForDriver

Version NID
3.60 0xCD295F0C

sceRtcIsSecureAlarmedForDriver

Version NID
3.60 0xE39F2ABE

sceRtcRegisterCallbackForDriver

Version NID
3.60 0x5220870D

sceRtcRegisterSecureAlarmCallbackForDriver

Version NID
3.60 0xCF84DFC0

sceRtcSetAlarmTickForDriver

Version NID
3.60 0xD610C646

sceRtcSetConfForDriver

Version NID
3.60 0xACFE5A9F

sceRtcSetCurrentDebugNetworkTickForDriver

Version NID
3.60 0xAAB6053F

sceRtcSetCurrentNetworkTickForDriver

Version NID
3.60 0x162E486E

sceRtcSetCurrentSecureTickForDriver

Version NID
3.60 0x7D431C87

sceRtcSetCurrentTickForDriver

Version NID
3.60 0x70A78CD2

sceRtcSetSecureAlarmTickForDriver

Version NID
3.60 0x8333790D

sceRtcUnregisterCallbackForDriver

Version NID
3.60 0x9546C68B

sceRtcUnregisterSecureAlarmCallbackForDriver

Version NID
3.60 0xEDDC2325

sceRtcTickAddSecondForDriver

Version NID
0.931-3.60 0x9C8AF264

This is guessed name.

Adds time (in second) to a time structure (in nanosecond). 

int sceRtcTickAddSecondForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 seconds);

SceRtcForDriver_CE51C2A1

Version NID
0.931-3.60 0xCE51C2A1

Adds time (in microseconds) to a time structure (in nanosecond). 

int SceRtcForDriver_CE51C2A1(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 microseconds);

sceRtcTickAddMicroSecondForDriver

Version NID
3.200.010 0xA82AC5B3

This is guessed name. 

int sceRtcTickAddMicroSecondForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt64 microseconds);

sceRtcTickAddDayForDriver

Version NID
3.60 0x0CB72FAF

This is guessed name.

Used by SceCompat#sceCompatSetUpdateState. 

int sceRtcTickAddDayForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt32 days);

SceRtcForDriver_FFD7A04F

Version NID
3.60 0xFFD7A04F

Used indirectly by SceProcessmgr#sceKernelLibcTime.

SceRtcForDriver_9097EF0D

Version NID
3.60 0x9097EF0D

Used indirectly by SceProcessmgr.

SceRtcForDriver_0F800878

Version NID
3.60 0x0F800878

Used indirectly by SceProcessmgr. 

int SceRtcForDriver_0F800878(SceUInt32 year, SceUInt32 month, SceUInt32 day)

sceRtcIsValidDateTimeForDriver

Version NID
3.200.010 0xADF63D7C

This is guessed name. 

int sceRtcIsValidDateTimeForDriver(const SceDateTime *pDateTime);

sceRtcConvertDateTimeToFatTimeForDriver

Version NID
3.200.010 0x09AF419B

This is guessed name. 

int sceRtcConvertDateTimeToFatTimeForDriver(const SceDateTime *pDateTime, SceUInt32 *pFatTime);

sceRtcTickAddWeekForDriver

Version NID
3.200.010 0x24209FBF

This is guessed name. 

int sceRtcTickAddWeekForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt32 weeks);

sceRtcTickAddHourForDriver

Version NID
3.200.010 0x32E50C36

This is guessed name. 

int sceRtcTickAddHourForDriver(SceRtcTick *pDst, const SceRtcTick *pSrc, SceUInt32 hours);

sceRtcGetOneSecondForDriver

Version NID
3.200.010 0x6965E5DF

This is guessed name. 

SceUInt32 sceRtcGetOneSecondForDriver(void);

sceRtcIsLeepYearForDriver

Version NID
3.200.010 0x6F96FAA5

This is guessed name. 

SceBool sceRtcIsLeepYearForDriver(SceUInt32 year);

SceRtcForDriver_A1F41AE2

Version NID
3.200.010 0xA1F41AE2 
int SceRtcForDriver_A1F41AE2(SceRtcTick *pTick, const char *str);

SceRtcForDriver_BA14600F

Version NID
3.200.010 0xBA14600F

It may be related to FILETIME on Windows. 

int SceRtcForDriver_BA14600F(SceRtcTick *pDst, SceUInt64 a2);

sceRtcGetMonthDayCountForDriver

Version NID
3.200.010 0xC2DC38D9

This is guessed name. 

int sceRtcGetMonthDayCountForDriver(SceUInt32 year, SceUInt32 month);

SceRtc

_sceRtcGetCurrentNetworkTick

Version NID
1.69-3.60 0x06F734FE

_sceRtcConvertLocalTimeToUtc

Version NID
1.69-3.60 0x0FC8AC41

_sceRtcConvertUtcToLocalTime

Version NID
1.69-3.60 0x1E61DDA4

_sceRtcGetCurrentTick

Version NID
1.69-3.60 0x247EE33B

_sceRtcGetCurrentClock

Version NID
1.69-3.60 0x24947354

sceRtcGetAccumulativeTime

Version NID
1.69-3.60 0x258BE8EC

_sceRtcFormatRFC2822

Version NID
1.69-3.60 0x2CD6AC86

_sceRtcGetCurrentGpsTick

Version NID
1.69-3.60 0x3BA820E5

_sceRtcGetCurrentClockLocalTime

Version NID
1.69-3.60 0x41A6C861

_sceRtcFormatRFC3339LocalTime

Version NID
1.69-3.60 0x4836474D

_sceRtcFormatRFC2822LocalTime

Version NID
1.69-3.60 0x4C7ED349

_sceRtcFormatRFC3339

Version NID
1.69-3.60 0x7EE2CBEF

_sceRtcGetCurrentRetainedNetworkTick

Version NID
1.69-3.60 0xC17EA809

_sceRtcGetLastReincarnatedTick

Version NID
1.69-3.60 0xE13D0FE5

_sceRtcGetLastAdjustedTick

Version NID
1.69-3.60 0xEA157EC5

_sceRtcGetCurrentAdNetworkTick

Version NID
3.60 0x76EFA8FE

_sceRtcGetCurrentDebugNetworkTick

Version NID
3.60 0xBF639B21

How to get current time and date

Getting the current time and date involves Syscon scratchpad and Syscon command 0x11. Syscon command 0x11 returns twice the number of seconds Syscon has been running since its power on. Syscon scratchpad contains at offset 0x10 the timestamp when Syscon "started" running. It is stored in the following format: microseconds since 01/01/0001 and divided by 2^19. By adding those values together, the OS obtains the current time and date.

In pseudocode: 

last_reincarnated_tick = syscon_read_scratchpad(offset=0x10, size=5)
up_time_half_seconds = syscon_cmd_read(cmd=0x11, size=4)
UTC = timedelta(microseconds=last_reincarnated_tick * (1<<19)) + datetime(1, 1, 1) + timedelta(seconds=up_time_half_seconds*2)
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