Hardware/Hollywood IRQs

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Hollywood IRQs
Hollywood Registers
Access
BroadwayPartial
StarletFull
Registers
Base0x0d800030
Length0x10
Access size32 bits
Byte orderBig Endian
IRQs
Broadway14
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The Hollywood chipset includes a simple dual interrupt controller capable of routing up to 32 interrupt sources to either the Starlet, the PowerPC, or both. Each CPU has an independent pair of control registers.

IRQ sources

IRQ Description
0 Starlet Timer
1 NAND Interface
2 AES Engine
3 SHA-1 Engine
4 USB Host Controller (EHCI)
5 USB Host Controller (OHCI0)
6 USB Host Controller (OHCI1)
7 SD Host Controller
8 802.11 Wireless
9 Unknown
10 Hollywood GPIOs (Broadway)
11 Hollywood GPIOs (Starlet)
12-16 Unknown
17 Reset button
18 Drive Interface (DI)
19-29 Unknown
30 IPC (Broadway)
31 IPC (Starlet)

Register list

Hollywood IRQs
Address Bits Name Description
0x0d800030 32 HW_PPCIRQFLAG Broadway IRQ Flags
0x0d800034 32 HW_PPCIRQMASK Broadway IRQ Mask
0x0d800038 32 HW_ARMIRQFLAG Starlet IRQ Flags
0x0d80003c 32 HW_ARMIRQMASK Starlet IRQ Mask

Register descriptions

HW_PPCIRQFLAG (0x0d800030)
  310
Access R/Z

This register contains the 32 IRQ flag bits for the Broadway. These are set by the hardware. To clear a flag, write 1 to it.


HW_PPCIRQMASK (0x0d800034)
  310
Access R/W

This register contains the 32 IRQ mask bits for the Broadway. If a bit is set, then the corresponding flag bit will cause Processor Interface IRQ #14 to be generated.


HW_ARMIRQFLAG (0x0d800038)
  310
Access R/Z

This register contains the 32 IRQ flag bits for the Starlet. These are set by the hardware. To clear a flag, write 1 to it.


HW_ARMIRQMASK (0x0d80003c)
  310
Access R/W

This register contains the 32 IRQ mask bits for the Starlet. If a bit is set, then the corresponding flag bit will cause the ARM IRQ to be asserted.

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