SceSonyRegbus
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MMIO interface @ 0xE800'0000 (size 0x2000?)
Registers
Default is to be understood as the value seen during observation.
Undocumented offsets are RAZ/WI but may still hold registers. Names in italic are guessed.
| Offset | Name | Type | Description |
|---|---|---|---|
| 0x0000 | ? | RW | Bits 0xF: Some kind of ACL (default value: 0x4) |
| 0x0004 | ? | RW | Bits 0xF: Some kind of ACL (default value: 0x4) |
| 0x0008 | ? | RW | Bits 0xF: Some kind of ACL (default value: 0x4) |
| 0x000C | ? | RW | Bits 0xF: Some kind of ACL (default value: 0x4) |
| 0x0010 | ? | RW | Bits 0xF: Some kind of ACL (default value: 0xA) Writing 0xF can trigger DABT in gpu_es4.skprx
|
| 0x0014 | ? | RW | Bit 0: ? (writing 1 hangs ARM) |
| 0x0100 | ? | RW | Bit 0: ? (maybe related to secure bus error?) |
| 0x0108 | REGBUS_SECERRSTAT | RO/WC? | Bit 0: secure bus error occurred on Regbus |
| 0x0110 | REGBUS_SECERRID | RO | Secure bus error identifier |
| 0x0114 | REGBUS_SECERRADDR | RO | Secure bus error address |
| 0x0118 | REGBUS_SECERRATTR | RO | Secure bus error attributes |
| 0x011C | REGBUS_SECERRINFO | RO | Secure bus error info |
| 0x0134 | ? | RO | ? (seen values: 0xDC04, 0xB781, 0xEEDA) |
| 0x0140 | ? | RO | 4 words. Values similar to +0x134. Maybe some kind of error log. |
| 0x0150 | ? | RW | Bits 0xFF: ? (default value: 0) |
| 0x1100 | ? | RO | Bit 0: ? (maybe related to non-secure bus error?) |
| 0x1108 | REGBUS_ERRSTAT | RO/WC? | Bit 0: non-secure bus error occurred on Regbus |
| 0x1110 | REGBUS_ERRID | RO | Non-secure bus error identifier |
| 0x1114 | REGBUS_ERRADDR | RO | Non-secure bus error address |
| 0x1118 | REGBUS_ERRATTR | RO | Non-secure bus error attributes |
| 0x111C | REGBUS_ERRINFO | RO | Non-secure bus error info |
| 0x1120 | ? | RO | Seen values: 0x2 |
| 0x1124 | ? | RW | Bits 0x3: ? (default value: 0) |
| 0x1128 | ? | RW | ? |