Nintendo Switch Brew

Secure Monitor: Difference between revisions

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'''nx-abca2''' ('''Icosa''' in '''Erista''', '''Iowa''' in '''Mariko''') hardware types are variations of the retail and EDEV form factors.
'''nx-abca2''' ('''Icosa''' in '''Erista''', '''Iowa''' in '''Mariko''') hardware types are variations of the retail, EDEV and SDEV form factors.


'''nx-abcb''' ('''Copper''') is the SDEV unit. Among other differences, this has extra hardware to support HDMI output.
'''nx-abcb''' ('''Copper''' in '''Erista''', '''Calcio''' in '''Mariko''') is a prototype unit. Among other differences, this has extra hardware to support HDMI output.


[8.0.0+] '''nx-abcc''' ('''Hoag''') was added for '''Mariko'''.
[8.0.0+] '''nx-abcc''' ('''Hoag''') was added for the Lite retail and HDEV form factors.


'''Erista''' memory is LPDDR4, while '''Mariko''' memory is LPDDR4X.
'''Erista''' memory is LPDDR4, while '''Mariko''' memory is LPDDR4X.
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===== HardwareType =====
===== HardwareType =====
[1.0.0+] This item is obtained by checking bits 8 and 2 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
[1.0.0+] This item is obtained by checking bits 8 and 2 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
* 0 ('''Icosa'''; Erista retail and EDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
* 0 ('''Icosa'''; Erista retail, EDEV and SDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
* 1 ('''Copper'''; Erista SDEV), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
* 1 ('''Copper'''; Erista prototype), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
* 3 (Invalid).
* 3 (Invalid).


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[4.0.0+] This item is obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
[4.0.0+] This item is obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
* 0 ('''Icosa'''; Erista retail and EDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
* 0 ('''Icosa'''; Erista retail, EDEV and SDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
* 1 ('''Copper'''; Erista SDEV), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
* 1 ('''Copper'''; Erista prototype), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
* 3 ('''Iowa'''; Mariko retail and EDEV), if new hardware type (bits 16-19) is '''Iowa'''.
* 3 ('''Iowa'''; Mariko retail, EDEV and SDEV), if new hardware type (bits 16-19) is '''Iowa'''.
* 4 (Invalid).
* 4 (Invalid).


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[8.0.0+] This item can be obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
[8.0.0+] This item can be obtained by checking bits 8, 2 and 16-19 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be:
* 0 ('''Icosa'''; Erista retail and EDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
* 0 ('''Icosa'''; Erista retail, EDEV and SDEV), if development flag (bit 8) is '''Retail''' and production flag (bit 2) is '''Production'''.
* 1 ('''Copper'''; Erista SDEV), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
* 1 ('''Copper'''; Erista prototype), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
* 2 ('''Hoag'''; Mariko Lite retail and HDEV), if new hardware type (bits 16-19) is '''Hoag'''.
* 2 ('''Hoag'''; Mariko Lite retail and HDEV), if new hardware type (bits 16-19) is '''Hoag'''.
* 3 ('''Iowa'''; Mariko retail and EDEV), if new hardware type (bits 16-19) is '''Iowa'''.
* 3 ('''Iowa'''; Mariko retail, EDEV and SDEV), if new hardware type (bits 16-19) is '''Iowa'''.
* 4 ('''Calcio''').
* 4 ('''Calcio'''; Mariko prototype), if development flag (bit 8) is '''Development''' and production flag (bit 2) is '''Prototype'''.
* 5 (Invalid).
* 5 (Invalid).


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|-
| 3
| 3
| EnableApplicationExtraThread
| [8.0.0+] EnableApplicationExtraThread
|-
|-
| 8
| 8
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Kernel reads this when setting up memory-related code.
Kernel reads this when setting up memory-related code.


'''EnableNonZeroFillMemory''' is a boolean determining whether kernel should it will memset various allocated memory-regions with 0x58, 0x59, 0x5A ('X', 'Y', 'Z') instead of zero. This allows Nintendo devs to find uninitialized memory bugs.
EnableNonZeroFillMemory is a boolean determining whether kernel should it will memset various allocated memory-regions with 0x58, 0x59, 0x5A ('X', 'Y', 'Z') instead of zero. This allows Nintendo devs to find uninitialized memory bugs.


'''EnableUserExceptionHandler''' is a boolean determining whether kernel should forcefully enable usermode exception handlers (when false, only certain aborts (((1LL << (esr >> 26)) & 0x1115804400224001) == 0, typically data/prefetch aborts) that occur when the faulting address is in a readable region with MemoryType_CodeStatic will trigger usermode exception handlers).
EnableUserExceptionHandler is a boolean determining whether kernel should forcefully enable usermode exception handlers (when false, only certain aborts (((1LL << (esr >> 26)) & 0x1115804400224001) == 0, typically data/prefetch aborts) that occur when the faulting address is in a readable region with MemoryType_CodeStatic will trigger usermode exception handlers).


'''PerformanceMonitoringUnit''' is a boolean determining whether kernel should enable usermode access to the Performance Monitors (whether PMUSERENR_EL0 should be 1 or 0).
PerformanceMonitoringUnit is a boolean determining whether kernel should enable usermode access to the Performance Monitors (whether PMUSERENR_EL0 should be 1 or 0).


[8.0.0+] '''EnableApplicationExtraThread''' is a boolean determining whether the kernel should increase the KThread slabheap capacity by 160. This also increases object capacities that are calculated based on number of threads.
EnableApplicationExtraThread is a boolean determining whether the kernel should increase the KThread slabheap capacity by 160. This also increases object capacities that are calculated based on number of threads.


'''CallShowErrorOnPanic''' is a boolean determining whether kernel should call smcPanic on error instead of infinite-looping.
CallShowErrorOnPanic is a boolean determining whether kernel should call smcPanic on error instead of infinite-looping.


'''MemorySize''' determines how much memory is available. 00/03 = 4 GB, 01 = 6 GB, 02 = 8 GB.
MemorySize determines how much memory is available. 00/03 = 4 GB, 01 = 6 GB, 02 = 8 GB.


===== IsChargerHiZModeEnabled =====
===== IsChargerHiZModeEnabled =====
Retrieved from "https://switchbrew.org/wiki/Secure_Monitor"