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== GetConfig ==
== GetConfig ==
Takes a u32 ('''ConfigItem'''), and returns a u64 ('''ConfigVal''').
Takes a u32 ('''ConfigItem'''), and returns one or more u64s ('''ConfigVal''').
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! ConfigItem || Name
! ConfigItem || Name
|-
|-
| 1 || DisableProgramVerification
| 1 || [[#DisableProgramVerification]]
|-
|-
| 2 || MemoryConfiguration
| 2 || [[#DRAMId]]
|-
|-
| 3 || SecurityEngineIRQNumber
| 3 || [[#SecurityEngineIRQNumber]]
|-
|-
| 4 || Version (returns the current [[Package2#Versions|Package1 Maxver Constant]] - 1).
| 4 || [[#Version]]
|-
|-
| 5 || HardwareType (0=Icosa (nx-abca2), 1=Copper (nx-abcb))
| 5 || [[#HardwareType]]
|-
|-
| 6 || IsRetail
| 6 || [[#IsRetail]]
|-
|-
| 7 || IsRecoveryBoot
| 7 || [[#IsRecoveryBoot]]
|-
|-
| 8 || DeviceId (byte7 clear)
| 8 || [[#DeviceId]]
|-
|-
| 9 || BootReason
| 9 || [1.0.0-4.0.0] BootReason
|-
|-
| 10 || MemoryArrange
| 10 || MemoryArrange
|-
|-
| 11 || IsDebugMode
| 11 || [[#IsDebugMode]]
|-
|-
| 12 || KernelMemoryConfiguration
| 12 || [[#KernelMemoryConfiguration]]
|-
|-
| 13 || BatteryProfile
| 13 || [[#BatteryProfile]]
|-
|-
| 14 || [4.0.0+] FUSE_RESERVED_ODM4 bit 10
| 14 || [4.0.0+] [[#Unknown0]]
|-
|-
| 15 || [5.0.0+] Always 0
| 15 || [5.0.0+] Unknown1
|-
|-
| 16 || [5.0.0+] IsNewSoc?
| 16 || [5.0.0+] [[#IsT214]]
|-
|-
| 17 || [5.0.0+] Package2Meta
| 17 || [5.0.0+] [[#Package2Hash]]
|}
|}
[[Process Manager services|PM]] checks id1 and if non-zero, calls fsp-pr SetEnabledProgramVerification(false).
=== DisableProgramVerification ===
[[Process Manager services|PM]] checks this item and if non-zero, calls fsp-pr SetEnabledProgramVerification(false).
[[PCV_services|PCV]] configures memory profiles based on id2.
=== DRAMId ===
This is extracted directly from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]].
[[PCV_services|PCV]] configures memory profiles based on DRAMId.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Version @ 40800
! Version @ 40800
! Revision
! Revision
! id2
! DRAMId
|-
|-
| jetson-tx1
| jetson-tx1
|}
|}
=== Hardware Types ===
nx-abcb (Copper) is the SDEV unit. Among other differences, this has extra hardware to support HDMI output.
nx-abca2 (Icosa) hardware types are variations of the retail form factor.
=== SecurityEngineIRQNumber ===
SPL uses this for setting up the security engine IRQ.
=== Version ===
The current [[Package2#Versions|Package1 Maxver Constant]] - 1.
=== 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 0 (Icosa), 1 (Copper) or 3 (Invalid).
[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), 1 (Copper), 3 (Unknown) or 4 (Invalid).
A value of 2 (Hoag?) is always mapped to 4 (Invalid).
=== IsRetail ===
This item is obtained by checking bits 9 and 0-1 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]]. It can be 0 (Debug), 1 (Retail) or 2 (Invalid).
=== IsRecoveryBoot ===
Used to determine if the system is booting from SafeMode firmware.
=== DeviceId ===
[[NIM_services|NIM]] checks if this item matches the [[Settings_services|set:cal]] DeviceId with byte7 cleared. If they don't match, a panic is thrown.
=== IsDebugMode ===
Kernel uses this to determine behavior of svcBreak positive arguments. It will break instead of just force-exiting the process which is what happens on retail.
[2.0.0+] This is also used with certain debug [[SVC|SVCs]].
[3.0.0+] [[Loader services|RO]] checks this and if set then skipping NRR rsa signatures is allowed.
=== Notes ===
=== KernelMemoryConfiguration ===
Kernel reads this when setting up memory-related code. If bit0 is set, 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. If bit17-16 is 0b01, the kernel assumes 6GB of DRAM instead of 4GB.
=== BatteryProfile ===
This tells if the TI Charger (bq24192) is active.
[[NIM_services|NIM]] checks that id8 output must match the [[Settings_services|set:cal]] DeviceId with byte7 cleared, otherwise panic.
=== IsT214 ===
This item is obtained from [[Fuse_registers#FUSE_RESERVED_ODM2|FUSE_RESERVED_ODM2]] if bit 11 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]] is set, [[Fuse_registers#FUSE_RESERVED_ODM0|FUSE_RESERVED_ODM0]] matches 0x8E61ECAE and [[Fuse_registers#FUSE_RESERVED_ODM1|FUSE_RESERVED_ODM1]] matches 0xF2BA3BB2.
This is speculated to be related to the new SoC T214.
=== Unknown0 ===
This item is bit 10 from [[Fuse_registers#FUSE_RESERVED_ODM4|FUSE_RESERVED_ODM4]].
=== Package2Hash ===
This is a SHA-256 hash calculated over the [[Package2|package2]] image. Since the hash calculation is an optional step in pkg2ldr, this item is only valid in recovery mode. Otherwise, an error is returned instead.
== UserExpMod ==
== UserExpMod ==