PPC services

APM is utilized for setting system performance profiles including clocks for CPU, GPU, and memory.

apm

This is "nn::apm::IManager".

This was moved to AM with [8.0.0+].

Cmd	Name
0	#OpenSession
1	GetPerformanceMode
6	[7.0.0+] IsCpuOverclockEnabled

OpenSession

Returns an #ISession.

apm:p

This is "nn::apm::IManagerPrivileged".

This service no longer exists in [8.0.0+].

Cmd	Name
0	OpenSession

OpenSession

Returns an #ISession.

apm:sys

This is "nn::apm::ISystemManager".

Cmd	Name
0	RequestPerformanceMode
1	GetPerformanceEvent
2	GetThrottlingState
3	GetLastThrottlingState
4	ClearLastThrottlingState
5	[5.0.0+] LoadAndApplySettings
6	[7.0.0+] #SetCpuBoostMode
7	[7.0.0+] #GetCurrentPerformanceConfiguration

GetPerformanceEvent

Returns an #ISession.

SetCpuBoostMode

Takes an u32 #CpuBoostMode.

CpuBoostMode

Mode	Description
0	Disabled.
1	Use performance configurations 0x92220009 and 0x9222000A, or 0x9222000B and 0x9222000C.
2	Use performance configurations 0x9222000B and 0x9222000C.

GetCurrentPerformanceConfiguration

Returns the currently active #PerformanceConfiguration (default value is 0x00020003).

ISession

This is "nn::apm::ISession".

Cmd	Name
0	SetPerformanceConfiguration
1	GetPerformanceConfiguration
2	[8.0.0+]

SetPerformanceConfiguration

Takes an u32 #PerformanceMode and an u32 #PerformanceConfiguration.

GetPerformanceConfiguration

Takes an u32 #PerformanceMode and returns an output u32 #PerformanceConfiguration.

PerformanceMode

Value	Name
0	Handheld
1	Docked

PerformanceConfiguration

Value	CPU clock	GPU clock	Memory clock
0x00010000	1020	384	1600
0x00010001	1020	768	1600
0x00010002	1224	691.2	1600
0x00020000	1020	230.4	1600
0x00020001	1020	307.2	1600
0x00020002	1224	230.4	1600
0x00020003	1020	307	1331.2
0x00020004	1020	384	1331.2
0x00020005	1020	307.2	1065.6
0x00020006	1020	384	1065.6
0x92220007	1020	460.8	1600
0x92220008	1020	460.8	1331.2
[7.0.0+] 0x92220009	1785	768	1600
[7.0.0+] 0x9222000A	1785	768	1331.2
[7.0.0+] 0x9222000B	1020	768	1600
[7.0.0+] 0x9222000C	1020	768	1331.2

Clocks are all in MHz.

Configurations 0x10001 and 0x20000 are only available while docked. Configurations 0x10002 and 0x20002 are only available for SDEV units.

Some of these require apm:p.

fgm, fgm:0, fgm:9

This is "nn::fgm::sf::ISession".

Cmd	Name
0	Initialize

IRequest

This is "nn::fgm::sf::IRequest".

Cmd	Name
0	Initialize
1	Set
2	Get
3	Cancel

fgm:dbg

This is "nn::fgm::sf::IDebugger".

Cmd	Name
0	Initialize
1	Read
2	Cancel

Settings

Key	Size	Notes
battery_draining_enabled	1	?
performance_mode_policy	strlen	"auto": use boost mode when docked. "normal": never use boost mode. "boost": always use boost mode (SDEV only).
sdev_cpu_overclock_enabled	1	SDEV only. Used to allow access to 1224MHz CPU mode.
sdev_throttling_additional_delay_us	4	SDEV only.
sdev_throttling_additional_delay_enabled	1	SDEV only.
throttling_for_smpd_enabled	1	Not used as of 3.0.
throttling_for_undock_enabled	1	Not used as of 3.0.