The ARM11 loads this value from 0x1FFFFFF0+1 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.
The ARM11 loads this value from 0x1FFFFFF0+1 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.
−
When this field is zero, bit0 for UNITINFO is set for retail. When this field is non-zero, bit0 for UNITINFO is clear for dev/debug units, and an ARM11 kernel state flag which enables debugging is set. Bit1 means JTAG connected.
+
When this field is zero, bit0 for UNITINFO is set for retail. When this field is non-zero, bit0 for UNITINFO is clear for dev/debug units, and an ARM11 kernel state flag which enables debugging is set. JTAG is only enabled for debugger and "firm" modes (bit1).
== 0x1FF80016 ==
== 0x1FF80016 ==
+
{| class="wikitable" border="1"
+
! Value
+
! Description
+
|-
+
| 0
+
| Cold Boot
+
|-
+
| 1
+
| Reset from CTR mode
+
|-
+
| 3
+
| Reset from TWL mode
+
|-
+
| 5
+
| Reset from NTR mode
+
|-
+
| 7
+
| Reset from AGB mode
+
|}
+
The ARM11 loads this value from 0x1FFFFFF0+2 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.
The ARM11 loads this value from 0x1FFFFFF0+2 during startup, which is written by the ARM9 during ARM9<>ARM11 kernel sync.