215
edits
Changes
Clarify PDC interrupt use
| 0
| 0
|
|
| MPCore software-interrupt. Not configured.
| MPCore software-interrupt. Used by Kernel11 to sync cores in crt0.
|-
|-
| 0x1
| 0x1-0x3
|
|
| MPCore software-interrupt. Used by BOOT11 to kickstart Core1.
| MPCore software-interrupt. Used by Boot11 and Kernel11 to kickstart Core1/2/3, and by Kernel11 to sync cores in crt0.
|-
|-
| 0x4
| 0x4
| Kernel
| Kernel
| MPCore software-interrupt. Used to manage the performance counter.
| MPCore software-interrupt. Used to manage the performance counter. Also used by Kernel11 during crt0 to sync up.
|-
|-
| 0x5
| 0x5
| 0x2A
| 0x2A
| gsp, TwlBg
| gsp, TwlBg
| PDC0 (VBlank0)
| PDC0 (Top screen VBlank0, HBlank0)
|-
|-
| 0x2B
| 0x2B
| gsp, TwlBg
| gsp, TwlBg
| PDC1 (VBlank1)
| PDC1 (Bottom screen VBlank1, HBlank1)
|-
|-
| 0x2C
| 0x2C
| 0x58
| 0x58
| Kernel
| Kernel
| PDN Wake Event
| PDN (wake event or SoC mode changed)
|-
|-
| 0x59
| 0x59
| mic
| mic
| General microphone interrupt (?)
| General microphone interrupt (?)
|-
| 0x5B
| -
| [[HID_Registers#HID_PAD_CNT|HID_PAD_CNT]]
|-
|-
| 0x5C
| 0x5C
| 0x60
| 0x60
| gpio, TwlBg
| gpio, TwlBg
| Shell opened
| Shell opened (GPIO1_2 falling edge)
|-
|-
| 0x62
| 0x62
| gpio, TwlBg
| gpio, TwlBg
| Shell closed
| Shell closed (GPIO1_2 rising edge)
|-
|-
| 0x63
| 0x63
| gpio, TwlBg
| gpio, TwlBg
| Touchscreen Pen Down
| Touch Screen pressed (GPIO1_1 falling edge)
|-
|-
| 0x64
| 0x64
| gpio, TwlBg
| gpio, TwlBg
| Headphone jack plugged in/out
| Headphones inserted (GPIO2_0)
|-
|-
| 0x66
| 0x66
| gpio, TwlBg
| gpio, TwlBg
| GPIO_DATA1.bit1 (sfio = ?)
| TWL depop circuit (GPIO2_1)
|-
|-
| 0x68
| 0x68
| gpio, TwlBg
| gpio, TwlBg
| C-stick Interrupt
| C-stick interrupt (GPIO3_0)
|-
|-
| 0x69
| 0x69
| gpio, TwlBg
| gpio, TwlBg
| IrDA Interrupt
| IrDA interrupt (active-low) (GPIO3_1)
|-
|-
| 0x6A
| 0x6A
| gpio, TwlBg
| gpio, TwlBg
| Gyro Interrupt
| Gyro interrupt (GPIO3_2)
|-
|-
| 0x6B
| 0x6B
| gpio, TwlBg
| gpio, TwlBg
| GPIO_DATA3.bit3 (sfio = ?)
| C-stick "stop" (output) (GPIO3_3)
|-
|-
| 0x6C
| 0x6C
| gpio, TwlBg
| gpio, TwlBg
| GPIO_DATA3.bit4 (sfio = ?)
| IrDA TX-RC (output) (GPIO3_4)
|-
|-
| 0x6D
| 0x6D
| gpio, TwlBg
| gpio, TwlBg
| GPIO_DATA3.bit5 (sfio = ?)
| IrDA RXD (GPIO3_5)
|-
|-
| 0x6E
| 0x6E
| gpio, TwlBg
| gpio, TwlBg
| GPIO_DATA3.bit6 (sfio = ?)
| NFC output1 (?) (GPIO3_6)
|-
|-
| 0x6F
| 0x6F
| gpio, TwlBg
| gpio, TwlBg
| GPIO_DATA3.bit7 (sfio = ?)
| NFC output2 (?) (GPIO3_7)
|-
|-
| 0x70
| 0x70
| gpio, TwlBg
| gpio, TwlBg
| GPIO_DATA3.bit8 (sfio = ?)
| Headphones button/half-inserted (active-low) (GPIO3_8)
|-
|-
| 0x71
| 0x71
| gpio, TwlBg
| gpio, TwlBg
| MCU (HOME/POWER pressed/released or WiFi switch pressed, etc.)
| MCU interrupt (GPIO3_9)
|-
|-
| 0x72
| 0x72
| gpio, TwlBg
| gpio, TwlBg
| NFC
| NFC interrupt (?) (GPIO3_10)
|-
|-
| 0x73
| 0x73
| TwlBg
| TwlBg
| GPIO_DATA3.bit11 (sfio = ?)
| QTM output (?) (GPIO3_11)
|-
|-
| 0x74
| 0x74
There are 2 tables in the ARM11 kernel: the first has 32 * 2(or 32 * 4) 8-byte entries. This table is for the private interrupts that belong to each core. The data for each interrupt can be found by doing table_base + (core_num * 0x100) + (intr_num * 8). The second table is for public hardware interrupts and the data for each interrupt can be retrieved by doing table_base + (intr_num * 8).
There are 2 tables in the Arm11 kernel: the first has 32 * 2(or 32 * 4) 8-byte entries. This table is for the private interrupts that belong to each core. The data for each interrupt can be found by doing table_base + (core_num * 0x100) + (intr_num * 8). The second table is for public hardware interrupts and the data for each interrupt can be retrieved by doing table_base + (intr_num * 8).
The Arm11 kernel configures interrupts the following way:
The Arm11 kernel configures interrupts the following way (it seems the GPIO IRQ layout doesn't match released 3DS models):
<code>Interrupts 0x00 to 0x1F: edge-triggered, N-N
<nowiki>Interrupts 0x00 to 0x1F: edge-triggered, N-N
Interrupt 0x20: level-sensitive, 1-N
Interrupt 0x20: level-sensitive, 1-N
Interrupt 0x21: level-sensitive, 1-N
Interrupt 0x21: level-sensitive, 1-N
Interrupt 0x7b: level-sensitive, 1-N
Interrupt 0x7b: level-sensitive, 1-N
Interrupt 0x7c: level-sensitive, 1-N
Interrupt 0x7c: level-sensitive, 1-N
Interrupt 0x7d: level-sensitive, 1-N</code>
Interrupt 0x7d: level-sensitive, 1-N</nowiki>
= InterruptData =
= InterruptData =