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CONFIG11 Registers (edit)

Revision as of 01:56, 27 January 2021

5,772 bytes added ,  01:56, 27 January 2021
→‎CFG11_SOCINFO
Line 1: Line 1: −
== Registers ==
+
= Registers =
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
−
!  NAME
+
!  Old3DS
−
!  PHYSICAL ADDRESS
+
!  Name
−
!  ARM11 PROCESS ADDRESS
+
!  Address
−
!  WIDTH
+
!  Width
 +
!  Used by
 
|-
 
|-
 +
| style="background: green" | Yes
 +
| [[#CFG11_SHAREDWRAM_32K_CODE|CFG11_SHAREDWRAM_32K_CODE]]<0-7>
 +
| 0x10140000
 +
| 1*8
 +
| Boot11, Process9, [[DSP Services]]
 +
|-
 +
| style="background: green" | Yes
 +
| [[#CFG11_SHAREDWRAM_32K_DATA|CFG11_SHAREDWRAM_32K_DATA]]<0-7>
 +
| 0x10140008
 +
| 1*8
 +
| Boot11, Process9, [[DSP Services]]
 +
|-style="border-top: double"
 +
| style="background: green" | Yes
 +
| [[#CFG11_NULLPAGE_CNT|CFG11_NULLPAGE_CNT]]
 +
| 0x10140100
 +
| 4
 +
|
 +
|-
 +
| style="background: green" | Yes
 +
| [[#CFG11_FIQ_MASK|CFG11_FIQ_MASK]]
 +
| 0x10140104
 +
| 1
 +
| Kernel11.
 +
|-
 +
| style="background: green" | Yes
 +
| Debug related bitfield?
 +
Observed: 0b1100(N3DS)/0b0000(O3DS)
 +
| 0x10140105
 +
| 1
 +
|
 +
|-
 +
| style="background: green" | Yes
 +
| [[#CFG11_CDMA_CNT|CFG_CDMA_CNT]]
 +
| 0x1014010C
 +
| 2
 +
| TwlBg
 +
|-
 +
| style="background: green" | Yes
 +
| [[#CFG11_GPUPROT|CFG11_GPUPROT]]
 +
| 0x10140140
 +
| 4
 +
| Kernel11
 +
|-
 +
| style="background: green" | Yes
 +
| [[#CFG11_WIFICNT|CFG11_WIFICNT]]
 +
| 0x10140180
 +
| 1
 +
| TwlBg, [[NWM Services]]
 +
|-
 +
| style="background: green" | Yes
 +
| [[#CFG11_SPI_CNT|CFG11_SPI_CNT]]
 +
| 0x101401C0
 +
| 2
 +
| [[SPI Services]], TwlBg
 +
|-style="border-top: double"
 +
| style="background: green" | Yes
 
| ?
 
| ?
−
| 0x10141008
+
| 0x10140200
−
| 0x1EC41008
+
| 4
 +
|
 +
|-style="border-top: double"
 +
| style="background: red" | No
 +
| [[#CFG11_GPU_N3DS_CNT|CFG11_GPU_N3DS_CNT]]
 +
| 0x10140400
 +
| 1
 +
| NewKernel11
 +
|-
 +
| style="background: red" | No
 +
| [[#CFG11_CDMA_PERIPHERALS|CFG11_CDMA_PERIPHERALS]]
 +
| 0x10140410
 +
| 4
 +
| NewKernel11
 +
|-
 +
| style="background: red" | No
 +
| [[#CFG11_BOOTROM_OVERLAY_CNT|CFG11_BOOTROM_OVERLAY_CNT]]
 +
| 0x10140420
 +
| 1
 +
| NewKernel11
 +
|-
 +
| style="background: red" | No
 +
| [[#CFG11_BOOTROM_OVERLAY_VAL|CFG11_BOOTROM_OVERLAY_VAL]]
 +
| 0x10140424
 
| 4
 
| 4
 +
| NewKernel11
 
|-
 
|-
 +
| style="background: red" | No
 
| ?
 
| ?
−
| 0x1014100C
+
| 0x10140428
−
| 0x1EC4100C
   
| 4
 
| 4
 +
|
 +
|-style="border-top: double"
 +
| style="background: green" | Yes
 +
| [[#CFG11_SOCINFO|CFG11_SOCINFO]]
 +
| 0x10140FFC
 +
| 2
 +
| Boot11, Kernel11
 +
|}
 +
 +
== CFG11_SHAREDWRAM_32K_CODE ==
 +
Used for mapping 32K chunks of shared WRAM for DSP data.
 +
 +
{| class="wikitable" border="1"
 +
!  Bits
 +
!  Description
 +
|-
 +
| 0-1
 +
| Master (0=ARM9?, 1=ARM11?, 2 or 3=DSP/code)
 +
|-
 +
| 2-4
 +
| Offset (0..7) (slot 0..7) (LSB of address in 32Kbyte units)
 +
|-
 +
| 5-6
 +
| Not used (0)
 +
|-
 +
| 7
 +
| Enable (0=Disable, 1=Enable)
 +
|}
 +
 +
== CFG11_SHAREDWRAM_32K_DATA ==
 +
Used for mapping 32K chunks of shared WRAM for DSP data.
 +
 +
{| class="wikitable" border="1"
 +
!  Bits
 +
!  Description
 +
|-
 +
| 0-1
 +
| Master (0=ARM9?, 1=ARM11?, 2 or 3=DSP/data)
 +
|-
 +
| 2-4
 +
| Offset (0..7) (slot 0..7) (LSB of address in 32Kbyte units)
 +
|-
 +
| 5-6
 +
| Not used (0)
 +
|-
 +
| 7
 +
| Enable (0=Disable, 1=Enable)
 +
|}
 +
 +
== CFG11_NULLPAGE_CNT ==
 +
{| class="wikitable" border="1"
 +
!  Bit
 +
!  Description
 +
|-
 +
| 0
 +
| Trap all ''data'' accesses to physmem addresses 0x0000 to 0x1000
 +
|-
 +
| 16
 +
| Unknown
 +
|}
 +
 +
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
 +
|-
 +
| 0
 +
| Enable Microphone DMA (CDMA 0x00)
 +
|-
 +
| 1
 +
| Enable NTRCARD DMA on Arm11 side (CDMA 0x01)
 +
|-
 +
| 2-4
 +
| ?
 +
|-
 +
| 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
 +
|-
 +
| 0
 +
| Enable [[SPI Registers]] 0x10160800.
 
|-
 
|-
−
| PDN_CODEC
  −
| 0x10141220
  −
| 0x1EC41220
   
| 1
 
| 1
 +
| Enable [[SPI Registers]] 0x10142800.
 +
|-
 +
| 2
 +
| Enable [[SPI Registers]] 0x10143800.
 +
|}
 +
 +
== CFG11_GPU_N3DS_CNT ==
 +
{| class="wikitable" border="1"
 +
!  Bit
 +
!  Description
 +
|-
 +
| 0
 +
| Enable N3DS mode? (enables access to the extra N3DS FCRAM banks, etc.)
 +
|-
 +
| 1
 +
| Texture related? (observing texture glitches when disabling this bit)
 +
|}
 +
 +
== CFG11_CDMA_PERIPHERALS ==
 +
{| class="wikitable" border="1"
 +
!  Bit
 +
!  Description
 +
|-
 +
| 0-17
 +
| CDMA Peripheral 0x00-0x11 data request target (0=Old CDMA, 1=New CDMA)
 +
|-
 +
| 18-31
 +
| Unused
 +
|}
 +
 +
== 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"
 +
!  Bits
 +
!  Description
 +
!  Used by
 +
|-
 +
| 0
 +
| CTR mode (1 on all 3DSes)
 +
| Boot11
 
|-
 
|-
−
| PDN_CAMERA
  −
| 0x10141224
  −
| 0x1EC41224
   
| 1
 
| 1
 +
| LGR1 (1 on all N3DSes, orginally 2 cores, and 2x clockrate)
 +
| Kernel11
 +
|-
 +
| 2
 +
| LGR2 (1 on all released N3DSes, 4 cores and 3x clockrate)
 +
| Kernel11
 
|}
 
|}
   −
==0x1EC41008 and 0x1EC4100C==
+
==CFG11_GPUPROT==
−
These are the PDN PTM registers used for the [[PDN_Services|PDN]] PTM service.
+
{| class="wikitable" border="1"
 +
!  Old3DS
 +
!  Bits
 +
! Description
 +
|-
 +
| style="background: green" | Yes
 +
| 3-0
 +
| Old FCRAM DMA cutoff size, 0 = no protection.
 +
|-
 +
| style="background: red" | No
 +
| 7-4
 +
| New FCRAM DMA cutoff size, 0 = no protection.
 +
|-
 +
| style="background: green" | Yes
 +
| 8
 +
| AXIWRAM protection, 0 = accessible.
 +
|-
 +
| style="background: red" | No
 +
| 10-9
 +
| QTM DMA cutoff size
 +
|-
 +
| style="background: green" | Yes
 +
| 31-11
 +
| Zeroes
 +
|}
   −
==PDN_CODEC==
+
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.
−
This is the power register used for the [[PDN_Services|PDN]] CODEC service.
     −
bit0 = unknown, bit1 = turn on/off DSP, rest = always 0.
+
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.
   −
==0x1EC41224==
+
On New3DS the old+new FCRAM cutoff can be used at the same time, however this isn't done officially.
−
This is the power register used for the [[PDN_Services|PDN]] camera service.
     −
bit0 = unknown, bit1 = turn on/off cameras, rest = always 0.
+
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]].
 +
 
 +
==CFG11_WIFICNT==
 +
{| class="wikitable" border="1"
 +
!  Old3DS
 +
!  Bits
 +
!  Description
 +
|-
 +
| style="background: green" | Yes
 +
| 0
 +
| Enable wifi subsystem
 +
|}
TuxSH
516

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