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Line 8:
Line 8: − + Line 14:
Line 14: − + − + − + − + − + − − | 2 − | − |- − | style="background: green" | Yes − | ARM11 interrupt related. Line 38:
Line 32: − + + − + − + − + − + − − | 2 − | − |- − | style="background: green" | Yes − | ? − + − + − + − + − + − + − + − + − + − + − + + + + + + + − + + + + + + + − + − + − + − + − + − + − + − + − + − + − + + + + + + + + + − + − + − + − + − + + + + − + − | ?+ − + − | 2+ − | TwlBg+ + + + + + − + − | + − | 0x1014110A − − | TwlBg − + − | PDN_WIFI?+ − | 0x1014110C − | 1 − − + − | ?+ − | 0x10141110 − | 2 − − + − | ?+ − + − | 2+ − | TwlBg+ + + + − + − | [[#PDN_CODEC|PDN_CODEC_0]]+ − | 0x10141114 − | 2 − − + − | [[#PDN_CODEC|PDN_CODEC_1]]+ − + − | 2+ − | [[CODEC Services]], TwlBg+ + + + + + + + + + + + + − + − | ?+ − | 0x10141118 − | 1 − − | style="background: green" | Yes − | ? − | 0x10141119 − + − + − | 0x10141120 − | 1 − | TwlBg − + − | style="background: green" | Yes+ − | [[#PDN_GPU_CNT|PDN_GPU_CNT]]+ − | 0x10141200+ − | 4+ − | Boot11, Kernel11+ + + + − + − + − | 0x10141204 − | 4 − | Boot11, Kernel11 − |- − | style="background: green" | Yes − | PDN_GPU_CNT3 − | 0x10141210 − | 2 − | Kernel11, TwlBg − | style="background: green" | Yes − | [[#PDN_CODEC_CNT|PDN_CODEC_CNT]] − | 0x10141220 − + − + − + − | 0x10141224 − | 1 − | − |- − | style="background: green" | Yes − | SharedWram/DSP related. − | 0x10141230 − | 1 − | Process9 − + Line 213:
Line 206: − + − + + + + + + + − + − + + + + − + − Used for mapping 32K chunks of shared WRAM for DSP data.+ + + + + + + + + + + + + + − + − + + − + − + + − + − + − + − | 7 − | Enable (0=Disable, 1=Enable) − + − Used for mapping 32K chunks of shared WRAM for DSP data. − + − + − + + + + + + − + − + + − + − + + − + − + + − ==PDN_WIFI_CNT==+ − Bit0: Enable wifi. − ==PDN_TWLMODE==+ − The very last 3DS-mode register poke the [[FIRM|TWL_FIRM]] Process9 does before it gets switched into TWL-mode, is writing 0x8000 to this register. Before writing this register, TWL Process9 waits for the value of this register to become non-zero. The Process9 code for this runs from ITCM, since switching into TWL-mode includes remapping all ARM9 physical memory. − Writing 0x8000 to here from the ARM9 with NATIVE_FIRM running doesn't seem to do anything, other reg-pokes likely need done first.+ − ==PDN_GPU_CNT==+ − This one seems to control the LCD/GPU/Backlight. − Bit0: Enable GPU registers at 0x10400000+.+ − Bit16: Turn on LCD backlight. − ==PDN_GPU_CNT2==+ − Bit0: Power on GPU? − ==PDN_CODEC==+ − The following is the only time the ARM11 CODEC module uses any 0x1EC41XXX registers. In one case CODEC module clears bit1 in register 0x1EC41114, in the other case CODEC module sets bit1 in registers 0x1EC41114 and 0x1EC41116. − + − This is the power register used for the [[PDN_Services|PDN]] CODEC service.+ − + − bit0 = unknown, bit1 = turn on/off DSP, rest = always 0.+ − + − + − This is the power register used for the [[PDN_Services|PDN]] camera service.+ − + − bit0 = unknown, bit1 = turn on/off cameras, rest = always 0.+ +
→CFG11_SOCINFO
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| [[#PDN_SHAREDWRAM_32K_DATA|PDN_SHAREDWRAM_32K_DATA]]<0-7>
| [[#CFG11_SHAREDWRAM_32K_CODE|CFG11_SHAREDWRAM_32K_CODE]]<0-7>
| 0x10140000
| 0x10140000
| 1*8
| 1*8
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| [[#PDN_SHAREDWRAM_32K_CODE|PDN_SHAREDWRAM_32K_CODE]]<0-7>
| [[#CFG11_SHAREDWRAM_32K_DATA|CFG11_SHAREDWRAM_32K_DATA]]<0-7>
| 0x10140008
| 0x10140008
| 1*8
| 1*8
| Boot11, Process9, [[DSP Services]]
| Boot11, Process9, [[DSP Services]]
|-
|-style="border-top: double"
| style="background: green" | Yes
| style="background: green" | Yes
| ?
| [[#CFG11_NULLPAGE_CNT|CFG11_NULLPAGE_CNT]]
| 0x10140100
| 0x10140100
| 2
| 4
|
|
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| ?
| [[#CFG11_FIQ_MASK|CFG11_FIQ_MASK]]
| 0x10140102
| 0x10140104
| 0x10140104
| 1
| 1
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| ?
| Debug related bitfield?
Observed: 0b1100(N3DS)/0b0000(O3DS)
| 0x10140105
| 0x10140105
| 1
| 1
| Kernel11.
|
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| ?
| [[#CFG11_CDMA_CNT|CFG_CDMA_CNT]]
| 0x10140108
| 0x1014010C
| 2
| 2
| TwlBg
| TwlBg
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| ?
| [[#CFG11_GPUPROT|CFG11_GPUPROT]]
| 0x1014010C
| 0x10140140
| 0x10140140
| 2
| 4
|
| Kernel11
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| [[#PDN_WIFI_CNT|PDN_WIFI_CNT]]
| [[#CFG11_WIFICNT|CFG11_WIFICNT]]
| 0x10140180
| 0x10140180
| 1
| 1
| TwlBg
| TwlBg, [[NWM Services]]
|-
|-
| style="background: green" | Yes
| style="background: green" | Yes
| [[#PDN_SPI_CNT|PDN_SPI_CNT]]
| [[#CFG11_SPI_CNT|CFG11_SPI_CNT]]
| 0x101401C0
| 0x101401C0
| 4
| 2
| [[SPI Services]], TwlBg
| [[SPI Services]], TwlBg
|-
|-style="border-top: double"
| style="background: green" | Yes
| style="background: green" | Yes
| ?
| ?
| 0x10140200
| 0x10140200
| 4
| 4
|
|
|-style="border-top: double"
|-style="border-top: double"
| style="background: green" | Yes
| style="background: red" | No
| PDN_GPU_STATUS?
| [[#CFG11_GPU_N3DS_CNT|CFG11_GPU_N3DS_CNT]]
| 0x10141000
| 0x10140400
| 1
| NewKernel11
|-
| style="background: red" | No
| [[#CFG11_CDMA_PERIPHERALS|CFG11_CDMA_PERIPHERALS]]
| 0x10140410
| 4
| 4
| Kernel11, TwlBg
| NewKernel11
|-
| style="background: red" | No
| [[#CFG11_BOOTROM_OVERLAY_CNT|CFG11_BOOTROM_OVERLAY_CNT]]
| 0x10140420
| 1
| NewKernel11
|-
|-
| style="background: green" | Yes
| style="background: red" | No
| PDN_PTM_0
| [[#CFG11_BOOTROM_OVERLAY_VAL|CFG11_BOOTROM_OVERLAY_VAL]]
| 0x10141008
| 0x10140424
| 4
| 4
| [[PTM Services]]
| NewKernel11
|-
|-
| style="background: green" | Yes
| style="background: red" | No
| PDN_PTM_1
| ?
| 0x1014100C
| 0x10140428
| 4
| 4
| [[PTM Services]], TwlBg
|
|-style="border-top: double"
|-style="border-top: double"
| style="background: green" | Yes
| style="background: green" | Yes
| [[#PDN_TWLMODE|PDN_TWLMODE]]
| [[#CFG11_SOCINFO|CFG11_SOCINFO]]
| 0x10141100
| 0x10140FFC
| 2
| 2
| TwlProcess9, TwlBg
| Boot11, Kernel11
|}
== CFG11_SHAREDWRAM_32K_CODE ==
Used for mapping 32K chunks of shared WRAM for DSP data.
{| class="wikitable" border="1"
! Bits
! Description
|-
|-
| style="background: green" | Yes
| 0-1
| TwlMode related?
| Master (0=ARM9?, 1=ARM11?, 2 or 3=DSP/code)
| 0x10141104
|-
| 2
| 2-4
| TwlBg
| Offset (0..7) (slot 0..7) (LSB of address in 32Kbyte units)
|-
| 5-6
| Not used (0)
|-
|-
| style="background: green" | Yes
| 7
| Enable (0=Disable, 1=Enable)
| 0x10141108
|}
== CFG11_SHAREDWRAM_32K_DATA ==
Used for mapping 32K chunks of shared WRAM for DSP data.
{| class="wikitable" border="1"
! Bits
! Description
|-
|-
| style="background: green" | Yes
| 0-1
| Master (0=ARM9?, 1=ARM11?, 2 or 3=DSP/data)
| 2
|-
|-
| style="background: green" | Yes
| 2-4
| Offset (0..7) (slot 0..7) (LSB of address in 32Kbyte units)
|
|-
|-
| style="background: green" | Yes
| 5-6
| Not used (0)
| TwlBg
|-
|-
| style="background: green" | Yes
| 7
| Enable (0=Disable, 1=Enable)
| 0x10141112
|}
== CFG11_NULLPAGE_CNT ==
{| class="wikitable" border="1"
! Bit
! Description
|-
|-
| style="background: green" | Yes
| 0
| Trap all ''data'' accesses to physmem addresses 0x0000 to 0x1000
| [[CODEC Services]], TwlBg
|-
|-
| style="background: green" | Yes
| 16
| Unknown
| 0x10141116
|}
The reset value of this register is 0x10000.
== CFG11_FIQ_MASK ==
Write bit N to mask FIQ interrutps on core N? (judging from what Kernel11 does -- it only ever configures FIQ for core1)
Reset value: 0xF
== CFG11_CDMA_CNT ==
Write 1 to enable, to disable.
{| class="wikitable" border="1"
! Bits
! Description
|-
|-
| style="background: green" | Yes
| 0
| Enable Microphone DMA (CDMA 0x00)
| TwlBg
|-
|-
| 1
| 1
| TwlBg
| Enable NTRCARD DMA on Arm11 side (CDMA 0x01)
|-
|-
| style="background: green" | Yes
| 2-4
| ?
| ?
|-
|-
|-style="border-top: double"
| 5
| WiFi. Enabled during kernel init since 11.4.
|}
== CFG11_SPI_CNT ==
When the corresponding bit is 0, the bus has to be accessed using the DS SPI registers. Otherwise it has to be accessed using the 3DS SPI registers.
{| class="wikitable" border="1"
! Bit
! Description
|-
|-
| style="background: green" | Yes
| 0
| [[#PDN_GPU_CNT2|PDN_GPU_CNT2]]
| Enable [[SPI Registers]] 0x10160800.
|-
|-
| 1
| 1
| Boot11, TwlBg
| Enable [[SPI Registers]] 0x10142800.
|-
|-
| style="background: green" | Yes
| 2
| [[#PDN_CAMERA_CNT|PDN_CAMERA_CNT]]
| Enable [[SPI Registers]] 0x10143800.
|}
|}
== PDN_SPI_CNT ==
== CFG11_GPU_N3DS_CNT ==
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Bit
! Bit
|-
|-
| 0
| 0
| Enable [[SPI Registers]] 0x10160000.
| Enable N3DS mode? (enables access to the extra N3DS FCRAM banks, etc.)
|-
|-
| 1
| 1
| Enable [[SPI Registers]] 0x10142000.
| Texture related? (observing texture glitches when disabling this bit)
|}
== CFG11_CDMA_PERIPHERALS ==
{| class="wikitable" border="1"
! Bit
! Description
|-
|-
| 2
| 0-17
| Enable [[SPI Registers]] 0x10143800.
| CDMA Peripheral 0x00-0x11 data request target (0=Old CDMA, 1=New CDMA)
|-
| 18-31
| Unused
|}
|}
== PDN_SHAREDWRAM_32K_DATA ==
== CFG11_BOOTROM_OVERLAY_CNT ==
Bit0: Enable bootrom overlay functionality.
== CFG11_BOOTROM_OVERLAY_VAL ==
The 32-bit value to overlay data-reads to bootrom with. See [[PDN Registers#PDN_LGR_CPU_CNT<0-3>|PDN_LGR_CPU_CNT]]<0-3>.
== CFG11_SOCINFO ==
Read-only register. Identifies the maximum mode-switching capabilities of the SoC.
* CTR: O3DS
* LGR1: N3DS prototype, 4 cores (orginally 2), up to 535MHz, no L2C (see below)
* LGR2: retail N3DS, 4 cores, up to 804MHz, has L2C
Kernel code suggests that devices that support LGR1 but not LGR2 only had 2 cores. All cores (the number of which can be read from MPCORE SCU registers) are usable in LGR1 mode.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Bits
! Bits
! Description
! Description
! Used by
|-
|-
| 0-1
| 0
| Master (0=ARM9?, 1=ARM11?, 2 or 3=DSP/data)
| CTR mode (1 on all 3DSes)
| Boot11
|-
|-
| 2-4
| 1
| Offset (0..7) (slot 0..7) (LSB of address in 32Kbyte units)
| LGR1 (1 on all N3DSes, orginally 2 cores, and 2x clockrate)
| Kernel11
|-
|-
| 5-6
| 2
| Not used (0)
| LGR2 (1 on all released N3DSes, 4 cores and 3x clockrate)
|-
| Kernel11
|}
|}
== PDN_SHAREDWRAM_32K_CODE ==
==CFG11_GPUPROT==
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Old3DS
! Bits
! Bits
! Description
! Description
|-
|-
| 0-1
| style="background: green" | Yes
| Master (0=ARM9?, 1=ARM11?, 2 or 3=DSP/code)
| 3-0
| Old FCRAM DMA cutoff size, 0 = no protection.
|-
| style="background: red" | No
| 7-4
| New FCRAM DMA cutoff size, 0 = no protection.
|-
|-
| 2-4
| style="background: green" | Yes
| Offset (0..7) (slot 0..7) (LSB of address in 32Kbyte units)
| 8
| AXIWRAM protection, 0 = accessible.
|-
|-
| 5-6
| style="background: red" | No
| Not used (0)
| 10-9
| QTM DMA cutoff size
|-
|-
| 7
| style="background: green" | Yes
| Enable (0=Disable, 1=Enable)
| 31-11
| Zeroes
|}
|}
For the old FCRAM DMA cutoff, it protects starting from 0x28000000-(0x800000*x) until end of FCRAM. There is no way to protect the first 0x800000-bytes.
For the new FCRAM DMA cutoff, it protects starting from 0x30000000-(0x800000*x) until end of FCRAM. When the old FCRAM cutoff is set to non-zero, the first 0x800000-bytes bytes of new FCRAM are protected.
On New3DS the old+new FCRAM cutoff can be used at the same time, however this isn't done officially.
For the QTM DMA cutoff, it protects starting from 0x1F400000-(0x100000*x) until end of QTM mem.
On cold boot this reg is set to 0.
When this register is set to value 0, the GPU can access the entire FCRAM, AXIWRAM, and on New3DS all QTM-mem.
[[SVC|Initialized]] during kernel boot, and used with [[SVC]] 0x59 which was implemented with [[11.3.0-36|v11.3]].
==PDN_CODEC_CNT==
==CFG11_WIFICNT==
{| class="wikitable" border="1"
! Old3DS
! Bits
! Description
==PDN_CAMERA_CNT==
|-
| style="background: green" | Yes
| 0
| Enable wifi subsystem
|}