Unit PlatformRPi
From Ultibo.org
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Contents
[hide]Description
Ultibo Platform Interface unit for Raspberry Pi
The RPi A+/B+ have the Power LED connected to GPIO Pin 35 (Activity LED is now on GPIO Pin 47 instead of Pin 16 in model A/B).
Constants
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RPi ARM physical to VC IO mapping
RPI_VCIO_*
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RPi ARM physical to VC bus mapping
RPI_VCBUS_*
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RPi address of StartupHandler on reset
RPI_STARTUP_*
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RPi page table address and size
RPI_PAGE_TABLE_*
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RPi vector table address and size
RPI_VECTOR_TABLE_*
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RPi CPU count, boot and mask
RPI_CPU_*
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RPi SWI
RPI_SWI_*
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RPi kernel image name
RPI_KERNEL_*
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RPi plus GPIO power LED
RPIPLUS_GPIO_PWRLED_*
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RPi GPIO activity LED
RPI_GPIO_ACTLED_*
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RPi plus GPIO activity LED
RPIPLUS_GPIO_ACTLED_*
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RPi mailbox
RPI_MAILBOX_*
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RPi framebuffer
RPI_FRAMEBUFFER_*
Type definitions
None defined
Public variables
RPi specific Ultibo variables
RPiInitialized:Boolean;
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Timer variables
TimerRegisters:PBCM2835SystemTimerRegisters;
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Mailbox variables
Mailbox0Registers:PBCM2835Mailbox0Registers;
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Mailbox1Registers:PBCM2835Mailbox1Registers;
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Interrupt variables
InterruptRegisters:PBCM2835InterruptRegisters;
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InterruptEntries:array[0..(BCM2835_IRQ_COUNT - 1)] of PInterruptEntry;
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System call
SystemCallEntries:array[0..RPI_SWI_COUNT - 1] of TSystemCallEntry;
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IRQ/FIQ
IRQEnabled:array[0..2] of LongWord;
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3 groups of IRQs to Enable/Disable (See: TBCM2835InterruptRegisters) |
FIQEnabled:LongWord;
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The single IRQ number to Enable as FIQ instead (See: TBCM2835InterruptRegisters) |
Watchdog variables
WatchdogRegisters:PBCM2835PMWatchdogRegisters;
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Function declarations
Initialization functions
RPi platform functions
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procedure RPiPageTableInit;
Description: Initialize the Hardware Page Tables before enabling the MMU
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function RPiMailboxReceive(Mailbox,Channel:LongWord):LongWord;
Description: Receive from specified mailbox on specified channel
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procedure RPiMailboxSend(Mailbox,Channel,Data:LongWord);
Description: Send to specified mailbox on specified channel
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function RPiMailboxCall(Mailbox,Channel,Data:LongWord; var Response:LongWord):LongWord;
Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel
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function RPiMailboxCallEx(Mailbox,Channel,Data:LongWord; var Response:LongWord; Timeout:LongWord):LongWord;
Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel
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function RPiMailboxPropertyCall(Mailbox,Channel:LongWord; Data:Pointer; var Response:LongWord):LongWord;
Description: Perform a property tag transaction (Send/Receive) to specified mailbox on specified channel
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function RPiMailboxPropertyCallEx(Mailbox,Channel:LongWord; Data:Pointer; var Response:LongWord; Timeout:LongWord):LongWord;
Description: Perform a property tag transaction (Send/Receive) to specified mailbox on specified channel
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function RPiMailboxPropertyTag(Tag:LongWord; Data:Pointer; Size:LongWord):LongWord;
Description: Request a property tag (Get/Set) from the mailbox property channel
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function RPiRequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified IRQ number
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function RPiReleaseExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified IRQ number
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function RPiRequestExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified FIQ number
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function RPiReleaseExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified FIQ number
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function RPiRegisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified interrupt number (Where Applicable)
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function RPiDeregisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified interrupt number (Where Applicable)
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function RPiRegisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;
Description: Request registration of the supplied extended handler to the specified System Call number
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function RPiDeregisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;
Description: Request deregistration of the supplied extended handler from the specified System Call number
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function RPiGetInterruptEntry(Number,Instance:LongWord; var Interrupt:TInterruptEntry):LongWord;
Description: Get the interrupt entry for the specified interrupt number and instance
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function RPiGetSystemCallEntry(Number:LongWord):TSystemCallEntry;
Description: To be documented
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function RPiSystemGetCommandLine:String;
Description: Get the Command Line from the Mailbox property tags channel
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function RPiCPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;
Description: Get the CPU Memory from the Mailbox property tags channel
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function RPiGPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;
Description: Get the GPU Memory from the Mailbox property tags channel
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function RPiBoardGetModel:LongWord;
Description: Get the Board Model from the Mailbox property tags channel
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function RPiBoardGetSerial:Int64;
Description: Get the Board Serial from the Mailbox property tags channel
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function RPiBoardGetRevision:LongWord;
Description: Get the Board Revision from the Mailbox property tags channel
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function RPiBoardGetMACAddress:String;
Description: Get the Board MAC Address from the Mailbox property tags channel
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function RPiFirmwareGetRevision:LongWord;
Description: Get the Firmware Revision from the Mailbox property tags channel
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function RPiFirmwareGetThrottled:LongWord;
Description: Get the Firmware Throttling state from the Mailbox property tags channel
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function RPiPowerGetWait(PowerId:LongWord):LongWord;
Description: Get the Power Wait from the Mailbox property tags channel
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function RPiPowerGetState(PowerId:LongWord):LongWord;
Description: Get the Power State from the Mailbox property tags channel
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function RPiPowerSetState(PowerId,State:LongWord; Wait:Boolean):LongWord;
Description: Set the Power State in the Mailbox property tags channel
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function RPiClockGetCount:LongWord;
Description: Gets the current system clock count (32 least significant bits of total)
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function RPiClockGetRate(ClockId:LongWord):LongWord;
Description: Get the Clock Rate from the Mailbox property tags channel
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function RPiClockSetRate(ClockId,Rate:LongWord; Turbo:Boolean):LongWord;
Description: Set the Clock Rate in the Mailbox property tags channel
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function RPiClockGetState(ClockId:LongWord):LongWord;
Description: Get the Clock State from the Mailbox property tags channel
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function RPiClockSetState(ClockId,State:LongWord):LongWord;
Description: Set the Clock State in the Mailbox property tags channel
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function RPiClockGetMinRate(ClockId:LongWord):LongWord;
Description: Get the Clock Min Rate from the Mailbox property tags channel
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function RPiClockGetMaxRate(ClockId:LongWord):LongWord;
Description: Get the Clock Max Rate from the Mailbox property tags channel
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function RPiTurboGetState(TurboId:LongWord):LongWord;
Description: Get the Turbo State from the Mailbox property tags channel
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function RPiTurboSetState(TurboId,State:LongWord):LongWord;
Description: Set the Turbo State in the Mailbox property tags channel
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function RPiVoltageGetValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Value from the Mailbox property tags channel
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function RPiVoltageSetValue(VoltageId,Value:LongWord):LongWord;
Description: Set the Voltage Value in the Mailbox property tags channel
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function RPiVoltageGetMinValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Min Value from the Mailbox property tags channel
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function RPiVoltageGetMaxValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Max Value from the Mailbox property tags channel
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function RPiTemperatureGetCurrent(TemperatureId:LongWord):LongWord;
Description: Get the Temperature Current from the Mailbox property tags channel
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function RPiTemperatureGetMaximum(TemperatureId:LongWord):LongWord;
Description: Get the Temperature Maximum Model from the Mailbox property tags channel
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function RPiGPUMemoryAllocate(Length,Alignment,Flags:LongWord):THandle;
Description: Allocate GPU Memory from the Mailbox property tags channel
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function RPiGPUMemoryRelease(Handle:THandle):LongWord;
Description: Release GPU Memory from the Mailbox property tags channel
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function RPiGPUMemoryLock(Handle:THandle):LongWord;
Description: Lock GPU Memory from the Mailbox property tags channel
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function RPiGPUMemoryUnlock(Handle:THandle):LongWord;
Description: Unlock GPU Memory from the Mailbox property tags channel
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function RPiGPUExecuteCode(Address:Pointer; R0,R1,R2,R3,R4,R5:LongWord):LongWord;
Description: Execute GPU Code from the Mailbox property tags channel
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function RPiDispmanxHandleGet(Resource:THandle):THandle;
Description: Get Dispmanx Memory Handle from the Mailbox property tags channel
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function RPiEDIDBlockGet(Block:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Get EDID Block from the Mailbox property tags channel
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function RPiFramebufferAllocate(Alignment:LongWord; var Address,Length:LongWord):LongWord;
Description: Allocate Framebuffer from the Mailbox property tags channel
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function RPiFramebufferRelease:LongWord;
Description: Release Framebuffer from the Mailbox property tags channel
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function RPiFramebufferSetState(State:LongWord):LongWord;
Description: Set Framebuffer State (Blank Screen) from the Mailbox property tags channel
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function RPiFramebufferGetDimensions(var Width,Height,Top,Bottom,Left,Right:LongWord):LongWord;
Description: Get Framebuffer Dimensions from the Mailbox property tags channel
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function RPiFramebufferGetPhysical(var Width,Height:LongWord):LongWord;
Description: Get Framebuffer Physical size from the Mailbox property tags channel
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function RPiFramebufferSetPhysical(var Width,Height:LongWord):LongWord;
Description: Set Framebuffer Physical size from the Mailbox property tags channel
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function RPiFramebufferTestPhysical(var Width,Height:LongWord):LongWord;
Description: Test Framebuffer Physical size from the Mailbox property tags channel
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function RPiFramebufferGetVirtual(var Width,Height:LongWord):LongWord;
Description: Get Framebuffer Virtual size from the Mailbox property tags channel
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function RPiFramebufferSetVirtual(var Width,Height:LongWord):LongWord;
Description: Set Framebuffer Virtual size from the Mailbox property tags channel
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function RPiFramebufferTestVirtual(var Width,Height:LongWord):LongWord;
Description: Test Framebuffer Virtual size from the Mailbox property tags channel
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function RPiFramebufferGetDepth(var Depth:LongWord):LongWord;
Description: Get Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
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function RPiFramebufferSetDepth(var Depth:LongWord):LongWord;
Description: Set Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
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function RPiFramebufferTestDepth(var Depth:LongWord):LongWord;
Description: Test Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
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function RPiFramebufferGetPixelOrder(var Order:LongWord):LongWord;
Description: Get Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
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function RPiFramebufferSetPixelOrder(var Order:LongWord):LongWord;
Description: Set Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
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function RPiFramebufferTestPixelOrder(var Order:LongWord):LongWord;
Description: Test Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
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function RPiFramebufferGetAlphaMode(var Mode:LongWord):LongWord;
Description: Get Framebuffer Alpha Mode from the Mailbox property tags channel
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function RPiFramebufferSetAlphaMode(var Mode:LongWord):LongWord;
Description: Set Framebuffer Alpha Mode from the Mailbox property tags channel
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function RPiFramebufferTestAlphaMode(var Mode:LongWord):LongWord;
Description: Test Framebuffer Alpha Mode from the Mailbox property tags channel
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function RPiFramebufferGetPitch:LongWord;
Description: Get Framebuffer Pitch (Bytes per line) from the Mailbox property tags channel
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function RPiFramebufferGetOffset(var X,Y:LongWord):LongWord;
Description: Get Framebuffer Virtual Offset from the Mailbox property tags channel
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function RPiFramebufferSetOffset(var X,Y:LongWord):LongWord;
Description: Set Framebuffer Virtual Offset from the Mailbox property tags channel
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function RPiFramebufferTestOffset(var X,Y:LongWord):LongWord;
Description: Test Framebuffer Virtual Offset from the Mailbox property tags channel
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function RPiFramebufferGetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Get Framebuffer Overscan from the Mailbox property tags channel
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function RPiFramebufferSetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Set Framebuffer Overscan from the Mailbox property tags channel
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function RPiFramebufferTestOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Test Framebuffer Overscan from the Mailbox property tags channel
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function RPiFramebufferGetPalette(Buffer:Pointer; Length:LongWord):LongWord;
Description: Get Framebuffer Palette from the Mailbox property tags channel
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function RPiFramebufferSetPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Set Framebuffer Palette from the Mailbox property tags channel
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function RPiFramebufferTestPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Test Framebuffer Palette from the Mailbox property tags channel
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function RPiFramebufferGetLayer(var Layer:LongInt):LongWord;
Description: Get Framebuffer Layer from the Mailbox property tags channel
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function RPiFramebufferSetLayer(var Layer:LongInt):LongWord;
Description: Set Framebuffer Layer from the Mailbox property tags channel
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function RPiFramebufferTestLayer(var Layer:LongInt):LongWord;
Description: Test Framebuffer Layer from the Mailbox property tags channel
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function RPiFramebufferTestVsync:LongWord;
Description: Test Framebuffer Vertical Sync from the Mailbox property tags channel
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function RPiFramebufferSetVsync:LongWord;
Description: Set Framebuffer Vertical Sync from the Mailbox property tags channel
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function RPiFramebufferSetBacklight(Brightness:LongWord):LongWord;
Description: Set Framebuffer Backlight Brightness from the Mailbox property tags channel
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function RPiFramebufferGetNumDisplays(var NumDisplays:LongWord):LongWord;
Description: Get the number of displays from the Mailbox property tags channel
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function RPiFramebufferGetDisplayId(DisplayNum:LongWord):LongWord;
Description: Get the display id for the specified display number from the Mailbox property tags channel
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function RPiFramebufferSetDisplayNum(DisplayNum:LongWord):LongWord;
Description: Get the display number that all framebuffer requests will refer to using the Mailbox property tags channel
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function RPiFramebufferGetDisplaySettings(DisplayNum:LongWord; var DisplaySettings:TDisplaySettings):LongWord;
Description: Get the display settings for the specified display number from the Mailbox property tags channel
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function RPiFramebufferDisplayIdToName(DisplayId:LongWord):String;
Description: Get the name for the specified display id
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function RPiTouchGetBuffer(var Address:PtrUInt):LongWord;
Description: Get the Touchscreen buffer from the Mailbox property tags channel
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function RPiTouchSetBuffer(Address:PtrUInt):LongWord;
Description: Set the Touchscreen buffer in the Mailbox property tags channel
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function RPiCursorSetDefault:LongWord;
Description: Set Cursor Default (Pixels) from the Mailbox property tags channel
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function RPiCursorSetInfo(Width,Height,HotspotX,HotspotY:LongWord; Pixels:Pointer; Length:LongWord):LongWord;
Description: Set Cursor Info (Pixels) from the Mailbox property tags channel
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function RPiCursorSetState(Enabled:Boolean; X,Y:LongWord; Relative:Boolean):LongWord;
Description: Set Cursor State (Enable, X, Y) from the Mailbox property tags channel
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function RPiDMAGetChannels:LongWord;
Description: Get the available DMA Channels from the Mailbox property tags channel
RPi thread functions
RPi SWI functions
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function RPiDispatchSWI(CPUID:LongWord; Thread:TThreadHandle; Request:PSystemCallRequest):TThreadHandle;
Description: Process an SWI request
RPi clock functions
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procedure RPiClockInterrupt(Parameter:Pointer);
Description: Interrupt handler function for the clock interrupt
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procedure RPiClockUpdate(Cycles:LongWord; var Last:LongWord);
Description: Setup a clock interrupt to trigger after the specified number of clock cycles
RPi scheduler functions
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function RPiSchedulerInterrupt(CPUID:LongWord; Thread:TThreadHandle; Parameter:Pointer):TThreadHandle;
Description: Interrupt handler function for the scheduler interrupt
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procedure RPiSchedulerUpdate(Cycles:LongWord; var Last:LongWord);
Description: Setup a scheduler interrupt to trigger after the specified number of clock cycles
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procedure RPiSchedulerSystemCall(Request:PSystemCallRequest);
Description: System Call handler for the scheduler
RPi framebuffer functions
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function RPiFramebufferDeviceAllocate(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Allocate a framebuffer using the Mailbox Property Tags
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function RPiFramebufferDeviceAllocateAlt(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Allocate a framebuffer using a simple Mailbox Call
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function RPiFramebufferDeviceRelease(Framebuffer:PFramebufferDevice):LongWord;
Description: To be documented
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function RPiFramebufferDeviceBlank(Framebuffer:PFramebufferDevice; Blank:Boolean):LongWord;
Description: To be documented
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function RPiFramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;
Description: To be documented
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function RPiFramebufferDeviceSetBacklight(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;
Description: To be documented
RPi helper functions
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procedure RPiBootBlink; assembler; nostackframe;
Description: Blink the Activity LED without dependency on any other RTL setup
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procedure RPiBootOutput(Value:LongWord);
Description: Output characters to UART0 without dependency on any other RTL setup
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procedure RPiBootConsoleWriteEx(const Value:String; X,Y:LongWord);
Description: To be documented
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function RPiConvertPowerIdRequest(PowerId:LongWord):LongWord;
Description: Convert Ultibo Power Id to BCM2835 Power Id
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function RPiConvertPowerStateRequest(PowerState:LongWord):LongWord;
Description: Convert Ultibo Power State to BCM2835 Power State
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function RPiConvertPowerStateResponse(PowerState:LongWord):LongWord;
Description: Convert BCM2835 Power State to Ultibo Power State
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function RPiConvertClockIdRequest(ClockId:LongWord):LongWord;
Description: Convert Ultibo Clock Id to BCM2835 Clock Id
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function RPiConvertClockStateRequest(ClockState:LongWord):LongWord;
Description: Convert Ultibo Clock State to BCM2835 Clock State
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function RPiConvertClockStateResponse(ClockState:LongWord):LongWord;
Description: Convert BCM2835 Clock State to Ultibo Clock State
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function RPiConvertVoltageIdRequest(VoltageId:LongWord):LongWord;
Description: Convert Ultibo Voltage Id to BCM2835 Voltage Id
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function RPiConvertTemperatureIdRequest(TemperatureId:LongWord):LongWord;
Description: Convert Ultibo Temperature Id to BCM2835 Temperature Id
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