Difference between revisions of "S5L8720 (Hardware)"

Revision as of 03:34, 11 February 2009

This should help people reversing iBoot and friends. It is a work in progress.

Base (vic0): 0x38E00000 Base (vic1): 0x38E01000
Register	Description
0x0	IRQ Status
0x4	FIQ Status
0x8	Raw Interrupt Status
0xC	Interrupt Select (0=IRQ, 1=FIQ)
0x10	Interrupt Enable (0=Disabled, 1=Enabled)
0x14	Interrupt Enable Clear (Write-Only; 0=No Effect, 1=Interrupt enabled with previous reg disabled)
0x18	Software Interrupt (0=Disabled, 1=Enabled)
0x1C	Software Interrupt Clear (Write-Only; 0=No Effect, 1=Interrupt enabled with previous reg disabled)
0x20	Register Protection Mode. If bit 0 is set to 1, then Protection Mode is on and only privileged mode writes will work.
0x24	Software Interrupt Priority Mask (0=Masked, 1=Not Masked)
0x100	Vector Addresses
0x200	Vector Priority Levels
0xFE0 through 0xFEC	Not sure what these four registers are, because I can confirm that at least SecureROM, probably iBoot and such too, will simply read them when initializing the vectored interrupt controller. It does nothing about the contents...I'll post a snippet from IDA in the discussion page, but if anyone knows what these do, put it here.

@@ Line 57: / Line 57: @@
 <td width=50%><center>0x200</center></td>
 <td width=50%><center>Vector Priority Levels</center></td>
+</tr>
+<tr>
+<td width=50%><center>0xFE0 through 0xFEC</center></td>
+<td width=50%><center>Not sure what these four registers are, because I can confirm that at least SecureROM, probably iBoot and such too, will simply read them when initializing the vectored interrupt controller. It does nothing about the contents...I'll post a snippet from IDA in the discussion page, but if anyone knows what these do, put it here.</center></td>
 </tr>
 </table>