SceSonyRegbus: Difference between revisions

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= Registers =
= Registers =


All undocumented offsets are RAZ/WI. Default is to be understood as ''the value seen during observation''.
Default is to be understood as ''the value seen during observation''.


* 0x0000: Bits 0xF R/W
Undocumented offsets are RAZ/WI but may still hold registers. Names in ''italic'' are guessed.
* 0x0004: Bits 0xF R/W
 
* 0x0008: Bits 0xF R/W
{| class="wikitable"
* 0x000C: Bits 0xF R/W
|-
* 0x0010: Bits 0xF R/W | Default: 0xA | Writing 0xF can cause crash in GPUES4 driver
! Offset
* 0x0014: Bit 0 R/W | Default: 0 | Writing 1 causes DABT in ARM
! Name
* 0x0100: Bit 0 R/W
! Type
* 0x0150: Bits 0xFF R/W | Default: 0
! Description
* 0x1100: Bit 0 R/W | Default: 0
|-
* 0x1120: Read-only/WI | Reads as 0x2
| 0x0000
* 0x1124: Bits 0x3 R/W | Default: 0
| ?
| 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)<br />Writing 0xF can trigger DABT in <code>gpu_es4.skprx</code>
|-
| 0x0014
| ?
| RW
| Bit 0: ? (writing 1 hangs ARM)
|-
| 0x0100
| ?
| RW
| Bit 0: ? (maybe related to secure bus error?)
|-
| 0x0108
| style="font-style:italic;" | 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.<br />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
| style="font-style:italic;" | 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
| ?
|}

Latest revision as of 14:41, 6 October 2024

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 ?
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