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Difference between revisions of "S5L8720 Timers (Hardware)"

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==S5L8720 Timer Hardware==
  
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Base Address: 0x3C700000
  
   
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==Common Registers==
  
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{| style="width:100%" border="1"
  
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!align="left" width="100px" |Register
 
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!align="left" |Function
  
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|-
  
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|align="left" width="100px" |0x118
  
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|align="left" |Timer 4-7 IRQ Status, write to clear interrupt request
  
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|}
  
   
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====IRQ Status Register (0x118)====
  
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{| style="width:100%" border="1"
  
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!align="left" width="100px" |Bit
  
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!align="left" width="60px" |Access
  
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!align="left" |Function
  
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|-
  
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|2-0||R||Timer 7 Flags (execute handler 1 to 3)
  
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|-
  
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|7-3||x||No Function / Unknown
  
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|-
  
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|10-8||R||Timer 6 Flags (execute handler 1 to 3)
  
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|-
  
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|15-11||x||No Function / Unknown
  
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|-
  
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|18-16||R||Timer 5 Flags (execute handler 1 to 3)
  
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|-
  
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|23-19||x||No Function / Unknown
  
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|-
  
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|26-24||R||Timer 4 Flags (execute handler 1 to 3)
  
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|-
  
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|31-27||x||No Function / Unknown
  
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|}
  
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RW: Read/Write Access, x: Don't know
  
   
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==RTC Registers==
  
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{| style="width:100%" border="1"
  
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!align="left" width="100px" |Register
  
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!align="left" |Function
  
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|-
  
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|0x80
  
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|RTC Ticks High
  
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|-
  
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|0x84
  
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|RTC Ticks Low
  
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|-
  
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|0x88
  
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|On init: 0xA, then after the others: 0x18010
  
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|-
  
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|0x8C
  
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|On init: 0xFFFFFFFF
  
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|-
  
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|0x90
  
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|On init: 0xFFFFFFFF
  
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|-
  
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|0x94
  
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|On init: 0xFFFFFFFF
  
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|-
  
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|0x98
  
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|On init: 0xFFFFFFFF
  
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|}
  
   
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==Timers==
  
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===Timer Bases===
  
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{| style="width:100%" border="1"
  
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!align="left" width="100px" |TimerNumber
  
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! 0 !! 1 !! 2 !! 3 !! 4 !! 5 !! 6 !! 7
  
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|-
  
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|Base ||align="center"| 0x0 ||align="center"| 0x20 ||align="center"| 0x40 ||align="center"| 0x60
 
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|align="center"| 0xA0 ||align="center"| 0xC0 ||align="center"| 0xE0 ||align="center"| 0x100
  
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|-
  
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|Width ||align="center"| 16Bit ||align="center"| 16Bit ||align="center"| 16Bit ||align="center"| 16Bit
 
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|align="center"| 32Bit ||align="center"| 32Bit ||align="center"| 32Bit ||align="center"| 32Bit
  
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|}
  
   
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===Timer Registers===
  
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{| style="width:100%" border="1"
  
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!align="left" width="100px" |Register
  
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!align="left" |Name
  
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|-
  
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|0x00
  
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|Config Register
  
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|-
  
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|0x04
  
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|Control Register
  
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|-
  
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|0x08
  
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|Compare Buffer Register (TCMPB)
  
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|-
  
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|0x0C
  
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|Counter Buffer register (TCNTB)
  
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|-
  
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|0x10
  
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|10-Bit Prescaler
  
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|-
  
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|0x14
  
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|Observation Register (TCNTO)
  
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|}
  
   
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===Register Description===
  
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====Config Register====
  
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{| style="width:100%" border="1"
  
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!align="left" width="100px" |Bit
  
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!align="left" width="60px" |Access
  
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!align="left" |Function
  
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|-
  
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|2-0||x||No Function / Unknown
  
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|-
  
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|3||RW||Switches Bit 23 (TOUT) randomly if set...
  
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|-
  
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|4||RW||Compare Mode: Counter runs up to TCMPB (Modebit 0)
  
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|-
  
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|5||RW||Auto-Reload: (Modebit 1)
  
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{|
  
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|1 = One-Shoot
  
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|-
  
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|0 = Interval Mode
  
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|-
  
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|Counter runs up to TCMPB
  
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|}
  
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|-
  
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|6||RW||Clock Select
  
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{|
 
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|0 ||=>||align="right"|133MHz Timer Clock
  
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|-
  
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|1 and Divider = 1 and Prescaler = 0 ||=>||align="right"|133MHz Timer Clock
  
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|-
  
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|1 and (Divider > 1 or Prescaler > 0) ||=>||align="right"|24MHz Timer Clock
  
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|}
  
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|-
  
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|7||RW||Unknown
  
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|-
  
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|10-8||RW||Divider
  
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|-
  
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|11||RW||Invert TOUT
  
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|-
  
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|14-12||RW||Unknown
  
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|-
  
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|15||x||No Function / Unknown
  
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|-
  
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|22-16||x||Unknown
  
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|-
  
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|23||RW
  
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|Timer Out (TOUT)
  
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{|
  
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|In mode 0x00: Bit 23 = Toggle when TCNT = 0
  
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|-
  
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|In mode 0x01: Bit 23 = (TCNT >= TCMP)
  
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|-
  
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|In mode 0x10: Bit 23 = (TCNT >= TCMP)
  
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|-
  
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|In mode 0x11: Bit 23 = Toggle when TCNT = TCMP
  
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|}
  
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|-
  
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|24||RW||Counting Direction: 0 = Up, 1 = Down (Only on Timer 4-7)
  
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|-
  
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|27-25||x||No Function / Unknown
  
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|-
  
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|28||RW||When counting down, count down starting at TCMPB (Only on Timer 4-7)
  
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|-
  
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|31-29||x||No Function / Unknown
  
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|}
  
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RW: Read/Write Access, x: Don't know
  
   
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====Control Register====
  
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{| style="width:100%" border="1"
  
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!align="left" width="100px" |Bit
  
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!align="left" width="60px" |Access
  
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!align="left" |Function
  
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|-
  
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|0||RW||Start / Stop
  
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|-
  
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|1||RW||Manual Update
  
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|-
  
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|3-2||x||No Function/ Unknown
  
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|-
  
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|4||RW||Resets all counter registers to 0
  
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|-
  
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|31-5||x||No Function/ Unknown
  
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|}
  
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RW: Read/Write Access, x: Don't know
  
   
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==References==
  
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Information gathered from:
  
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*Reversing iBoot
  
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*openiBoot
  
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*Playing with the registers when iBoot is running
  
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Revision as of 06:24, 7 November 2009

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Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team

Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team

Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team

Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team

Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team

Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team

Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team Haxed by 1337Urmom at The Pois0nhack team

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