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→ARM11 Kernel Configuration Memory
| 4
| 4
|-
|-
| UNITINFO
| ENVINFO
| 0x1FF80014
| 0x1FF80014
| 1
| 1
|-
|-
| BOOT_FIRM
| UNITINFO
| 0x1FF80015
| 0x1FF80015
| 1
| 1
| KERNEL_CTRSDKVERSION
| KERNEL_CTRSDKVERSION
| 0x1FF80018
| 0x1FF80018
| 4
|-
| FIRMLAUNCHFLAGS
| 0x1FF80020
| 4
| 4
|-
|-
|}
|}
This memory page is [[Memory_layout|read-only]] for ARM11 processes. This memory and the kernel code for it only exists under NATIVE_FIRM/SAFE_MODE_FIRM.
This memory page is mapped as "shared device" (it is thus uncached) and [[Memory_layout|read-only]] for ARM11 processes. This memory and the kernel code for it only exists under NATIVE_FIRM/SAFE_MODE_FIRM.
The FIRM_* fields are by default identical to the KERNEL_* fields. However, the FIRM_* fields can be overridden via FIRM-launch parameters, see [[FIRM|here]].
The FIRM_* fields are by default identical to the KERNEL_* fields. However, the FIRM_* fields can be overridden via FIRM-launch parameters, see [[FIRM|here]].
| 4
| 4
|-
|-
| RUNNING_HW (1=product, 2=devboard, 3=debugger, 4=capture)
| RUNNING_HW (1=product, 2=devboard, 3=debugger, 4=capture, 5=?)
| 0x1FF81004
| 0x1FF81004
| 1
| 1
| 1
| 1
|-
|-
| DATETIME_0 {(u64)MillisecondsSinceFirstJan1900,(u64)SystemTickLastTimeThisWasUpdated,(u32)unk,(u32)unk,(u32)unk,(u32)unk}
| ? (Set by PTM) Possibe values are 2, 4, 6, 7, 8 and 9
| 0x1FF81006
| 1
|-
| DATETIME_0 {(u64)MillisecondsSinceFirstJan1900,(u64)SystemTickLastTimeThisWasUpdated,(u32)unk(set to 0xFFB0FF0 by PTM),(u32)Set to 0 by PTM,(u32)Set to 0 by PTM,(u32)set to 0 by PTM}
| 0x1FF81020
| 0x1FF81020
| 32
| 32
| 1
| 1
|-
|-
| WIFI_? Likely wifi hardware related, NWM module initializes this. Regular Old3DS value = 0x00, regular New3DS value = 0x02.
| NETWORK_STATE The network state displayed by [[Home Menu]]. 2: Internet, 3/4/6: Local, 7: Disabled, Everything else: Enabled
| 0x1FF81067
| 0x1FF81067
| 1
| 1
| 1
| 1
|-
|-
| HIO related? On startup, and under certain conditions, NS will continuously call svcSleepThread(1000*1000) as long as bit0 of this field is clear.
| On startup, and under certain conditions, NS will continuously call svcSleepThread(1000*1000) as long as bit0 of this field is clear. ptmInitialize() sets this after writing MCU unit info to sharedmem.
| 0x1FF81086
| 0x1FF81086
| 1
| 1
|}
|}
This memory page is normally read-only for ARM11 processes, write-access is [[Memory_layout|determined]] by the process exheader kernel "shared page writing" flag. This memory only exists under NATIVE_FIRM/SAFE_MODE_FIRM.
This memory page is normally read-only for ARM11 processes, write-access is [[Memory_layout|determined]] by the process exheader kernel "shared page writing" flag. It is mapped as "shared device" (it is thus uncached) in both cases.
This memory only exists under NATIVE_FIRM/SAFE_MODE_FIRM.
= ARM11 Kernel Config Fields =
= ARM11 Kernel Config Fields =
== KERNEL_VERSIONMAJOR / FIRM_VERSIONMAJOR ==
== KERNEL_VERSIONMAJOR / FIRM_VERSIONMAJOR ==
This is the version-major for the currently running [[FIRM]].
This is the version-major for the currently running [[FIRM]].
The kernel initializes KERNEL_VERSIONMAJOR and SYSCOREVER with the same constant value.
== UPDATEFLAG ==
== UPDATEFLAG ==
Normally this is the same as SYSCOREVER. This used by [[AM:InstallNATIVEFIRM]] for comparing with the NATIVE_FIRM titleID-low. When the low u8 from the NATIVE_FIRM titleID-low is larger than FIRMSYSCOREVER, [[AM:InstallNATIVEFIRM]] will trigger FIRM installing. When that u8 is not larger than FIRM_SYSCOREVER, and these two values don't match, [[AM:InstallNATIVEFIRM]] will return an error.
Normally this is the same as SYSCOREVER. This used by [[AM:InstallNATIVEFIRM]] for comparing with the NATIVE_FIRM titleID-low. When the low u8 from the NATIVE_FIRM titleID-low is larger than FIRMSYSCOREVER, [[AM:InstallNATIVEFIRM]] will trigger FIRM installing. When that u8 is not larger than FIRM_SYSCOREVER, and these two values don't match, [[AM:InstallNATIVEFIRM]] will return an error.
== UNITINFO ==
== ENVINFO ==
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Bit
! Bit
|-
|-
| 1
| 1
| Set for debug units
| IsJtagConnected
|-
|-
| 2-7
| 2-7
|}
|}
Bit1 in this field is set by the ARM11 kernel when ARM debug CP14 DSCR bit14 is set. [[NS]] loads the menu TID from MENUTID when bits 1-7 of this field are clear. [[ErrDisp]] will display development error info when bit0 is clear.
Bit1 in this field is set by the ARM11 kernel when ARM debug CP14 DSCR bit14 is set (halting debug-mode enabled). [[NS]] loads the menu TID from MENUTID when bits 1-7 of this field are clear. [[ErrDisp]] will display development error info when bit0 is clear.
== 0x1FF80015 ==
== UNITINFO ==
The ARM11 loads this value from 0x1FFFFFF0+1 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.
{| class="wikitable" border="1"
! Value
! Boot Env
|-
| 0
| Prod
|-
| 1
| Dev
|-
| 2
| Debugger
|-
| 3
| Firm
|}
The ARM11 loads the value of [[CONFIG_Registers#CFG_UNITINFO|CFG_UNITINFO]] from 0x1FFFFFF0+1 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.
When this field is zero, bit0 for UNITINFO is set for retail. When this field is non-zero, bit0 for UNITINFO is clear for dev/debug units, and an ARM11 kernel state flag which enables debugging is set. Bit1 means JTAG connected.
When this field is zero, bit0 for ENVINFO is set for retail. When this field is non-zero, bit0 for ENVINFO is clear for dev/debug units, and an ARM11 kernel state flag which enables debugging is set. JTAG is only enabled for debugger and "firm" modes (bit1).
== PREV_FIRM ==
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Cold Boot
|-
| 1
| Reset from CTR mode
|-
| 3
| Reset from TWL mode
|-
| 5
| Reset from NTR mode
|-
| 7
| Reset from AGB mode
|}
The ARM11 loads this value from 0x1FFFFFF0+2 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.
The ARM11 loads this value from 0x1FFFFFF0+2 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.
== WIFI_MACADDR ==
== WIFI_MACADDR ==
This is the WiFi MAC address for the 3DS. This is initialized by the [[NWM_Services|NWM]] module, it's unknown where the MAC address written here was originally loaded from.
This is the WiFi MAC address for the 3DS. This is initialized by the [[NWM_Services|NWM]] module and is loaded from the WiFi card's EEPROM.
== 3D_SLIDERSTATE ==
== 3D_SLIDERSTATE ==
== 3D_LEDSTATE ==
== 3D_LEDSTATE ==
When non-zero, the 3D LED is disabled. See [[GSPGPU:SetLedForceOff]].
When non-zero, the 3D LED is disabled. See [[GSPGPU:SetLedForceOff]].
== BATTERY_LEDSTATE ==
Bit[0] is set when the adapter is connected. Bit[1] is set when the battery is charging. Bit[2:4] is the value of [[PTM:GetBatteryLevel|battery level]]. If the connection bit is set but the charging bit is clear, it means the battery is already fully charged but still with adapter connected.
== MENUTID ==
== MENUTID ==