Difference between revisions of "Configuration Memory"
| Line 37: | Line 37: | ||
| 8 | | 8 | ||
|} | |} | ||
| + | |||
| + | All of these registers are initialized by the ARM11 kernel, except for REG_MENUTID and REG_ACTIVEMENUTID which are set by NS. | ||
=== REG_NSTID === | === REG_NSTID === | ||
| − | This register contains the titleID of the first title to launch after | + | This register contains the titleID of the first title to launch after the core system processes loaded. If this register titleID is all-zero, the system will not attempt to launch the title. The regular ARM11 kernel sets this to the regular [[NS]] titleID, while the SAFE_MODE ARM11 kernel sets this to the SAFE_MODE NS titleID. |
=== REG_SYSCOREVER === | === REG_SYSCOREVER === | ||
| − | When launching [[NCCH#CXI|CXIs]], this register value must match the core version field stored in the CXI exheader. If they do not match, the system will refuse to launch the process. | + | When launching [[NCCH#CXI|CXIs]], this register value must match the core version field stored in the CXI exheader. If they do not match, the system will refuse to launch the ARM11 process. The regular ARM11 kernel sets this to 0x2, while the SAFE_MODE ARM11 kernel sets this to 0x3. |
=== REG_UNITINFO === | === REG_UNITINFO === | ||
| Line 50: | Line 52: | ||
|- | |- | ||
| 0 | | 0 | ||
| − | | Set for | + | | ? |
| + | |- | ||
| + | | 1 | ||
| + | | ? | ||
| + | |- | ||
| + | | 2 | ||
| + | | Set for debug units | ||
|- | |- | ||
| − | | | + | | 3-7 |
| − | | | + | | ? |
|} | |} | ||
| + | |||
| + | Normally this register is all-zero, however bit2 in this register is set by the ARM11 kernel when ARM debug CP14 DSCR bit14 is set. [[NS]] loads the menu TID from REG_MENUTID when bits 1-7 of this register are clear. | ||
=== REG_MENUTID === | === REG_MENUTID === | ||
| Line 60: | Line 70: | ||
=== REG_ACTIVEMENUTID === | === REG_ACTIVEMENUTID === | ||
| − | This contains the titleID of the currently running menu launched by [[NS]]. Normally this is the home menu TID from REG_MENUTID, but if launching that fails this titleID is the [[NS#Alternate Menu|alternate menu]].(On | + | This contains the titleID of the currently running menu launched by [[NS]]. Normally this is the home menu TID from REG_MENUTID, but if launching that fails this titleID is the [[NS#Alternate Menu|alternate menu]].(On debug units this is the TID loaded from [[Config Info Blocks|config]]) |
Revision as of 22:38, 6 September 2012
Registers
| NAME | PHYSICAL ADDRESS | PROCESS VIRTUAL ADDRESS | KERNEL VIRTUAL ADDRESS | WIDTH |
|---|---|---|---|---|
| REG_NSTID | ? | 0x1FF80008 | ? | 8 |
| REG_SYSCOREVER | ? | 0x1FF80010 | ? | 4 |
| REG_UNITINFO | ? | 0x1FF80014 | ? | 1 |
| REG_MENUTID | ? | 0x1FF810A0 | ? | 8 |
| REG_ACTIVEMENUTID | ? | 0x1FF810A8 | ? | 8 |
All of these registers are initialized by the ARM11 kernel, except for REG_MENUTID and REG_ACTIVEMENUTID which are set by NS.
REG_NSTID
This register contains the titleID of the first title to launch after the core system processes loaded. If this register titleID is all-zero, the system will not attempt to launch the title. The regular ARM11 kernel sets this to the regular NS titleID, while the SAFE_MODE ARM11 kernel sets this to the SAFE_MODE NS titleID.
REG_SYSCOREVER
When launching CXIs, this register value must match the core version field stored in the CXI exheader. If they do not match, the system will refuse to launch the ARM11 process. The regular ARM11 kernel sets this to 0x2, while the SAFE_MODE ARM11 kernel sets this to 0x3.
REG_UNITINFO
| Bit | Description |
|---|---|
| 0 | ? |
| 1 | ? |
| 2 | Set for debug units |
| 3-7 | ? |
Normally this register is all-zero, however bit2 in this register is set by the ARM11 kernel when ARM debug CP14 DSCR bit14 is set. NS loads the menu TID from REG_MENUTID when bits 1-7 of this register are clear.
REG_MENUTID
This contains the titleID of the retail menu which will be launched by NS.
REG_ACTIVEMENUTID
This contains the titleID of the currently running menu launched by NS. Normally this is the home menu TID from REG_MENUTID, but if launching that fails this titleID is the alternate menu.(On debug units this is the TID loaded from config)