Difference between revisions of "Unit PlatformRPi2"

Latest revision as of 05:09, 23 November 2022

`RPI2_SECURE_BOOT = $00000001;`	If 1 then startup will attempt to switch back to secure world during boot process (Moved to ARMSecureBoot)
`RPI2_SECURE_BOOT_OFFSET = $000000D4;`	The address of the Secure Boot marker in the ARM boot stub
`RPI2_SECURE_BOOT_MARKER = $58495052;`	The Secure Boot marker (ASCII "RPIX")

RPi2 address of StartupHandler on reset RPI2_STARTUP_*

`RPI2_STARTUP_ADDRESS = $00008000;`	Address of StartupHandler on Reset (Obtain from linker)

RPi2 page table address and size RPI2_PAGE_TABLE_*

`RPI2_PAGE_TABLE_BASE = $00004000;`	Place the first level Page Table after the interrupt vectors at 0x00001000 and before the code start at 0x00008000
`RPI2_PAGE_TABLE_SIZE = SIZE_16K;`	ARM Cortex A7 first level Page Table is exactly 16KB in size (4096 32 bit (4 byte) entries)

RPi2 vector table address and size RPI2_VECTOR_TABLE_*

`RPI2_VECTOR_TABLE_BASE = $00001000;`	Place the Interrupt Vector Table at 0x00001000 before the code start at 0x00008000
`RPI2_VECTOR_TABLE_SIZE = SIZE_64;`	The Interrupt Vector Table is exactly 64 bytes (16 32 bit (4 byte) entries)
`RPI2_VECTOR_TABLE_COUNT = 8;`	The Interrupt Vector Table contains 8 entries on an ARMv7 device

RPi2 CPU count RPI2_CPU_*

`RPI2_CPU_COUNT = BCM2836_CPU_COUNT;`
`RPI2_CPU_BOOT = CPU_ID_0;`
`RPI2_CPU_MASK = CPU_AFFINITY_0 or CPU_AFFINITY_1 or CPU_AFFINITY_2 or CPU_AFFINITY_3;`

RPi2 IRQ/FIQ start/routing RPI2_IRQ_*, RPI2_FIQ_*

`RPI2_IRQ_START = 0;`	System wide IRQs start at zero

`RPI2_IRQ_ROUTING = CPU_ID_0;`	Route system wide IRQs to CPU0
`RPI2_FIQ_ROUTING = CPU_ID_0;`	Route system wide FIQs to CPU0

`RPI2_IRQ_LOCAL_START = BCM2836_GPU_IRQ_COUNT + BCM2836_ARM_IRQ_COUNT;`	Local IRQs start after GPU and ARM IRQs

RPi2 SWI RPI2_SWI_*

`RPI2_SWI_COUNT = 256;`	Number of available SWI entries

RPi2 core timer prescaler RPI2_*_TIMER_*

`RPI2_CORE_TIMER_PRESCALER = $06AAAAAB;`	Divide the Crystal Clock by 19.2 to give a 1MHz Core Timer
`RPI2_CORE_TIMER_FREQUENCY = 1000000;`	The Core Timer frequency from the prescaler setting above
`RPI2_GENERIC_TIMER_FREQUENCY = 1000000;`	The ARM Generic Timer frequency from the prescaler setting above

RPi2 kernel image name RPI2_KERNEL_*

`RPI2_KERNEL_NAME = 'kernel7.img';`
`RPI2_KERNEL_CONFIG = 'config.txt';`
`RPI2_KERNEL_COMMAND = 'cmdline.txt';`
`RPI2_FIRMWARE_FILES = 'bootcode.bin,start.elf,fixup.dat,armstub32-rpi2.bin,armstub32-rpi3.bin';`
`RPI2_DTB_FILES = 'bcm2709-rpi-2-b.dtb,bcm2709-rpi-cm2.dtb,bcm2710-rpi-2-b.dtb,bcm2710-rpi-3-b.dtb,bcm2710-rpi-3-b-plus.dtb,bcm2710-rpi-cm3.dtb,bcm2710-rpi-zero-2.dtb,bcm2710-rpi-zero-2-w.dtb';`

RPi2 GPIO power LED RPI2_GPIO_PWRLED_*

GPIO Pin 35
Note: GPIO Pin 35 on the RPi2 is set on boot to Pull Up/Down Enable which must be cleared before using the pin

`RPI2_GPIO_PWRLED_GPFSEL = BCM2836_GPFSEL3;`	GPFSEL register for PWR LED
`RPI2_GPIO_PWRLED_GPSET = BCM2836_GPSET1;`	GPSET register for PWR LED
`RPI2_GPIO_PWRLED_GPCLR = BCM2836_GPCLR1;`	GPCLR register for PWR LED

`RPI2_GPIO_PWRLED_GPFSHIFT = 15;`	GPFSEL register shift for PWR LED
`RPI2_GPIO_PWRLED_GPFMASK = BCM2836_GPFSEL_MASK;`	GPFSEL register mask for PWR LED

`RPI2_GPIO_PWRLED_GPSHIFT = (35 - 32);`	GPSET/GPCLR register shift for PWR LED
`RPI2_GPIO_PWRLED_GPMASK = BCM2836_GPSET_MASK;`	GPSET/GPCLR register mask for PWR LED

GPIO Pin 35 on RPi2
See: http://www.raspberrypi.org/forums/viewtopic.php?t=72260
See also for how to control GPPUD etc: http://wiki.osdev.org/Raspberry_Pi_Bare_Bones

RPi2 GPIO activity LED RPI2_GPIO_ACTLED_*

GPIO Pin 47
Note: GPIO Pin 47 on the RPi2 is Pull High instead of Pull Low, to turn on the LED use RPI2_GPIO_ACTLED_GPSET instead of RPI2_GPIO_ACTLED_GPCLR

`RPI2_GPIO_ACTLED_GPFSEL = BCM2836_GPFSEL4;`	GPFSEL register for ACT LED
`RPI2_GPIO_ACTLED_GPSET = BCM2836_GPSET1;`	GPSET register for ACT LED
`RPI2_GPIO_ACTLED_GPCLR = BCM2836_GPCLR1;`	GPCLR register for ACT LED

`RPI2_GPIO_ACTLED_GPFSHIFT = 21;`	GPFSEL register shift for ACT LED
`RPI2_GPIO_ACTLED_GPFMASK = BCM2836_GPFSEL_MASK;`	GPFSEL register mask for ACT LED

`RPI2_GPIO_ACTLED_GPSHIFT = (47 - 32);`	GPSET/GPCLR register shift for ACT LED
`RPI2_GPIO_ACTLED_GPMASK = BCM2836_GPSET_MASK;`	GPSET/GPCLR register mask for ACT LED

RPi2 mailbox RPI2_MAILBOX_*

`RPI2_MAILBOX_TIMEOUT = 100;`	Default timeout to wait for mailbox calls to complete (Milliseconds)
`RPI2_MAILBOX_TIMEOUT_EX = 1000;`	Extended timeout to wait for mailbox calls to complete (Milliseconds)

RPi2 local mailbox RPI2_LOCAL_MAILBOX_*

`RPI2_LOCAL_MAILBOX_TIMEOUT = 100;`	Default timeout to wait for local mailbox calls to complete (Milliseconds)

RPi2 framebuffer RPI2_FRAMEBUFFER_*

`RPI2_FRAMEBUFFER_DESCRIPTION = 'BCM2836 Framebuffer';`

Type definitions

None defined

Public variables

RPi2 specific Ultibo variables

`RPi2Initialized:Boolean;`

`RPi2CNTVOFFLow:LongWord = 0;`	The low 32 bits of the Virtual Counter Offset register at boot time (CPU0 only) (Set by Startup). Must be initialized to remain in .data or else rewritten to zero with .bss

`RPi2CNTVOFFHigh:LongWord = 0;`	The high 32 bits of the Virtual Counter Offset register at boot time (CPU0 only) (Set by Startup). Must be initialized to remain in .data or else rewritten to zero with .bss

Timer variables

`TimerRegisters:PBCM2836SystemTimerRegisters;`

Mailbox variables

`Mailbox0Registers:PBCM2836Mailbox0Registers;`

`Mailbox1Registers:PBCM2836Mailbox1Registers;`

Interrupt variables

`InterruptRegisters:PBCM2836InterruptRegisters;`

`InterruptEntries:array[0..(BCM2836_GPU_IRQ_COUNT + BCM2836_ARM_IRQ_COUNT - 1)] of PInterruptEntry;`

`LocalInterruptEntries:array[RPI2_IRQ_LOCAL_START..(BCM2836_IRQ_COUNT - 1),0..(RPI2_CPU_COUNT - 1)] of PInterruptEntry;`

System call

`SystemCallEntries:array[0..RPI2_SWI_COUNT - 1] of TSystemCallEntry;`

IRQ/FIQ

`IRQEnabled:array[0..2] of LongWord;`	3 groups of IRQs to Enable/Disable (See: TBCM2836InterruptRegisters)

`FIQEnabled:LongWord;`	The single IRQ number to Enable as FIQ instead (See: TBCM2836InterruptRegisters)

`LocalIRQEnabled:array[0..(RPI2_CPU_COUNT - 1)] of LongWord;`	1 group of local IRQs to Enable/Disable per CPU (See: TBCM2836ARMLocalRegisters)

`LocalFIQEnabled:array[0..(RPI2_CPU_COUNT - 1)] of LongWord;`	1 group of local FIQs to Enable/Disable per CPU (See: TBCM2836ARMLocalRegisters)

Watchdog variables

`WatchdogRegisters:PBCM2836PMWatchdogRegisters;`

ARM local

`ARMLocalRegisters:PBCM2836ARMLocalRegisters;`

Virtual GPIO

`VirtualGPIOBuffer:TBCM2837VirtualGPIOBuffer;`

Function declarations

Initialization functions

procedure RPi2Init;

Description: To be documented

Note	None documented

procedure RPi2SecondarySwitch; assembler; nostackframe;

Description: Secondary CPU switch from HYP mode handler

Note	None documented

procedure RPi2SecondarySecure; assembler; nostackframe;

Description: Secondary CPU switch to secure mode handler

Note	None documented

procedure RPi2SecondaryHandler; assembler; nostackframe;

Description: Secondary CPU startup handler routine

Note	None documented

RPi2 platform functions

procedure RPi2SMPInit;

Description: To be documented

Note	None documented

procedure RPi2BoardInit;

Description: To be documented

Note	None documented

procedure RPi2MemoryInit;

Description: To be documented

Note	None documented

procedure RPi2ClockInit;

Description: To be documented

Note	None documented

procedure RPi2PowerInit;

Description: To be documented

Note	None documented

procedure RPi2MailboxInit;

Description: To be documented

Note	None documented

procedure RPi2InterruptInit;

Description: To be documented

Note	None documented

procedure RPi2PeripheralInit;

Description: To be documented

Note	None documented

procedure RPi2FramebufferInit;

Description: To be documented

Note	None documented

procedure RPi2PageTableInit;

Description: Initialize the Hardware Page Tables before enabling the MMU

Note	None documented

procedure RPi2PowerLEDEnable;

Description: To be documented

Note	None documented

procedure RPi2PowerLEDOn;

Description: To be documented

Note	None documented

procedure RPi2PowerLEDOff;

Description: To be documented

Note	None documented

procedure RPi2ActivityLEDEnable;

Description: To be documented

Note	None documented

procedure RPi2ActivityLEDOn;

Description: To be documented

Note	None documented

procedure RPi2ActivityLEDOff;

Description: To be documented

Note	None documented

function RPi2MailboxReceive(Mailbox,Channel:LongWord):LongWord;

Description: Receive from specified mailbox on specified channel

Note	Data = first 28 bits, Channel = last 4 bits

procedure RPi2MailboxSend(Mailbox,Channel,Data:LongWord);

Description: Send to specified mailbox on specified channel

Note	Data = first 28 bits, Channel = last 4 bits

function RPi2MailboxCall(Mailbox,Channel,Data:LongWord; var Response:LongWord):LongWord;

Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel

Note	Data = first 28 bits, Channel = last 4 bits Data pointer must be 16 byte aligned to allow for the 4 bit channel number

function RPi2MailboxCallEx(Mailbox,Channel,Data:LongWord; var Response:LongWord; Timeout:LongWord):LongWord;

Description: Perform a transaction (Send/Receive) to specified mailbox on specified channel

Note	Data = first 28 bits, Channel = last 4 bits Data pointer must be 16 byte aligned to allow for the 4 bit channel number

function RPi2MailboxPropertyCall(Mailbox,Channel:LongWord; Data:Pointer; var Response:LongWord):LongWord;

Description: Perform a property tag transaction (Send/Receive) to specified mailbox on specified channel

Note	Data = first 28 bits, Channel = last 4 bits Data pointer must be 16 byte aligned to allow for the 4 bit channel number

function RPi2MailboxPropertyCallEx(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

Note	Data = first 28 bits, Channel = last 4 bits Data pointer must be 16 byte aligned to allow for the 4 bit channel number

function RPi2MailboxPropertyTag(Tag:LongWord; Data:Pointer; Size:LongWord):LongWord;

Description: Request a property tag (Get/Set) from the mailbox property channel

Data	Data does not need to include mailbox property channel header or footer. Data pointer does not need any specific alignment or caching attributes.
Size	Size must be a multiple of 4 bytes. Size must include the size of the request and response which use the same buffer.

function RPi2RequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;

Description: Request registration of the supplied handler to the specified IRQ number

Note	None documented

function RPi2ReleaseExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;

Description: Request deregistration of the supplied handler from the specified IRQ number

Note	None documented

function RPi2RequestExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;

Description: Request registration of the supplied handler to the specified FIQ number

Note	None documented

function RPi2ReleaseExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;

Description: Request deregistration of the supplied handler from the specified FIQ number

Note	None documented

function RPi2RegisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;

Description: To be documented

Note	None documented

function RPi2DeregisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;

Description: To be documented

Note	None documented

function RPi2RegisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;

Description: Request registration of the supplied extended handler to the specified System Call number

Note	None documented

function RPi2DeregisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;

Description: Request deregistration of the supplied extended handler from the specified System Call number

Note	None documented

function RPi2GetInterruptEntry(Number,Instance:LongWord; var Interrupt:TInterruptEntry):LongWord;

Description: Get the interrupt entry for the specified interrupt number and instance

Note	None documented

function RPi2GetLocalInterruptEntry(CPUID,Number,Instance:LongWord; var Interrupt:TInterruptEntry):LongWord;

Description: Get the local interrupt entry for the specified interrupt number and instance

Note	None documented

function RPi2GetSystemCallEntry(Number:LongWord):TSystemCallEntry;

Description: Get the system call entry for the specified system call number

Note	None documented

function RPi2SystemRestart(Delay:LongWord):LongWord;

Description: To be documented

Note	None documented

function RPi2SystemShutdown(Delay:LongWord):LongWord;

Description: To be documented

Note	None documented

function RPi2SystemGetCommandLine:String;

Description: Get the Command Line from the Mailbox property tags channel

Note	None documented

function RPi2CPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;

Description: Get the CPU Memory from the Mailbox property tags channel

Note	None documented

function RPi2GPUGetState:LongWord;

Description: To be documented

Note	None documented

function RPi2GPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;

Description: Get the GPU Memory from the Mailbox property tags channel

Note	None documented

function RPi2BoardGetModel:LongWord;

Description: Get the Board Model from the Mailbox property tags channel

Note	None documented

function RPi2BoardGetSerial:Int64;

Description: Get the Board Serial from the Mailbox property tags channel

Note	None documented

function RPi2BoardGetRevision:LongWord;

Description: Get the Board Revision from the Mailbox property tags channel

Note	None documented

function RPi2BoardGetMACAddress:String;

Description: Get the Board MAC Address from the Mailbox property tags channel

Note	None documented

function RPi2FirmwareGetRevision:LongWord;

Description: Get the Firmware Revision from the Mailbox property tags channel

Note	None documented

function RPi2FirmwareGetThrottled:LongWord;

Description: Get the Firmware Throttling state from the Mailbox property tags channel

Note	None documented

function RPi2PowerGetWait(PowerId:LongWord):LongWord;

Description: Get the Power Wait from the Mailbox property tags channel

Note	None documented

function RPi2PowerGetState(PowerId:LongWord):LongWord;

Description: Get the Power State from the Mailbox property tags channel

Note	None documented

function RPi2PowerSetState(PowerId,State:LongWord; Wait:Boolean):LongWord;

Description: Set the Power State in the Mailbox property tags channel

Note	Power Lock not required due to Mailbox Property Call serialization

function RPi2ClockGetCount:LongWord;

Description: Gets the current system clock count (32 least significant bits of total)

Note	On the Raspberry Pi this comes from the System Timer free running counter which runs at 1MHz and therefore overflows every 4295 seconds

function RPi2ClockGetTotal:Int64;

Description: Gets the total system clock count

Note	On the Raspberry Pi this comes from the System Timer free running counter which runs at 1MHz, the clock interrupt also uses this timer to increment the clock every second and therefore keep time.

function RPi2ClockGetRate(ClockId:LongWord):LongWord;

Description: Get the Clock Rate from the Mailbox property tags channel

Note	None documented

function RPi2ClockSetRate(ClockId,Rate:LongWord; Turbo:Boolean):LongWord;

Description: Set the Clock Rate in the Mailbox property tags channel

Note	None documented

function RPi2ClockGetState(ClockId:LongWord):LongWord;

Description: Get the Clock State from the Mailbox property tags channel

Note	None documented

function RPi2ClockSetState(ClockId,State:LongWord):LongWord;

Description: Set the Clock State in the Mailbox property tags channel

Note	None documented

function RPi2ClockGetMinRate(ClockId:LongWord):LongWord;

Description: Get the Clock Min Rate from the Mailbox property tags channel

Note	None documented

function RPi2ClockGetMaxRate(ClockId:LongWord):LongWord;

Description: Get the Clock Max Rate from the Mailbox property tags channel

Note	None documented

function RPi2TurboGetState(TurboId:LongWord):LongWord;

Description: Get the Turbo State from the Mailbox property tags channel

Note	None documented

function RPi2TurboSetState(TurboId,State:LongWord):LongWord;

Description: Set the Turbo State in the Mailbox property tags channel

Note	None documented

function RPi2VoltageGetValue(VoltageId:LongWord):LongWord;

Description: Get the Voltage Value from the Mailbox property tags channel

Note	None documented

function RPi2VoltageSetValue(VoltageId,Value:LongWord):LongWord;

Description: Set the Voltage Value in the Mailbox property tags channel

Note	None documented

function RPi2VoltageGetMinValue(VoltageId:LongWord):LongWord;

Description: Get the Voltage Min Value from the Mailbox property tags channel

Note	None documented

function RPi2VoltageGetMaxValue(VoltageId:LongWord):LongWord;

Description: Get the Voltage Max Value from the Mailbox property tags channel

Note	None documented

function RPi2TemperatureGetCurrent(TemperatureId:LongWord):LongWord;

Description: Get the Temperature Current from the Mailbox property tags channel

Note	None documented

function RPi2TemperatureGetMaximum(TemperatureId:LongWord):LongWord;

Description: Get the Temperature Maximum Model from the Mailbox property tags channel

Note	None documented

function RPi2GPUMemoryAllocate(Length,Alignment,Flags:LongWord):THandle;

Description: Allocate GPU Memory from the Mailbox property tags channel

Note	None documented

function RPi2GPUMemoryRelease(Handle:THandle):LongWord;

Description: Release GPU Memory from the Mailbox property tags channel

Note	None documented

function RPi2GPUMemoryLock(Handle:THandle):LongWord;

Description: Lock GPU Memory from the Mailbox property tags channel

Note	None documented

function RPi2GPUMemoryUnlock(Handle:THandle):LongWord;

Description: Unlock GPU Memory from the Mailbox property tags channel

Note	None documented

function RPi2GPUExecuteCode(Address:Pointer; R0,R1,R2,R3,R4,R5:LongWord):LongWord;

Description: Execute GPU Code from the Mailbox property tags channel

Note	None documented

function RPi2DispmanxHandleGet(Resource:THandle):THandle;

Description: Get Dispmanx Memory Handle from the Mailbox property tags channel

Note	None documented

function RPi2EDIDBlockGet(Block:LongWord; Buffer:Pointer; Length:LongWord):LongWord;

Description: Get EDID Block from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferAllocate(Alignment:LongWord; var Address,Length:LongWord):LongWord;

Description: Allocate Framebuffer from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferRelease:LongWord;

Description: Release Framebuffer from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetState(State:LongWord):LongWord;

Description: Set Framebuffer State (Blank Screen) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetDimensions(var Width,Height,Top,Bottom,Left,Right:LongWord):LongWord;

Description: Get Framebuffer Dimensions from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetPhysical(var Width,Height:LongWord):LongWord;

Description: Get Framebuffer Physical size from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetPhysical(var Width,Height:LongWord):LongWord;

Description: Set Framebuffer Physical size from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestPhysical(var Width,Height:LongWord):LongWord;

Description: Test Framebuffer Physical size from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetVirtual(var Width,Height:LongWord):LongWord;

Description: Get Framebuffer Virtual size from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetVirtual(var Width,Height:LongWord):LongWord;

Description: Set Framebuffer Virtual size from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestVirtual(var Width,Height:LongWord):LongWord;

Description: Test Framebuffer Virtual size from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetDepth(var Depth:LongWord):LongWord;

Description: Get Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetDepth(var Depth:LongWord):LongWord;

Description: Set Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestDepth(var Depth:LongWord):LongWord;

Description: Test Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetPixelOrder(var Order:LongWord):LongWord;

Description: Get Framebuffer Pixel Order (RGB) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetPixelOrder(var Order:LongWord):LongWord;

Description: Set Framebuffer Pixel Order (RGB) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestPixelOrder(var Order:LongWord):LongWord;

Description: Test Framebuffer Pixel Order (RGB) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetAlphaMode(var Mode:LongWord):LongWord;

Description: Get Framebuffer Alpha Mode from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetAlphaMode(var Mode:LongWord):LongWord;

Description: Set Framebuffer Alpha Mode from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestAlphaMode(var Mode:LongWord):LongWord;

Description: Test Framebuffer Alpha Mode from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetPitch:LongWord;

Description: Get Framebuffer Pitch (Bytes per line) from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetOffset(var X,Y:LongWord):LongWord;

Description: Get Framebuffer Virtual Offset from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetOffset(var X,Y:LongWord):LongWord;

Description: Set Framebuffer Virtual Offset from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestOffset(var X,Y:LongWord):LongWord;

Description: Test Framebuffer Virtual Offset from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;

Description: Get Framebuffer Overscan from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;

Description: Set Framebuffer Overscan from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;

Description: Test Framebuffer Overscan from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetPalette(Buffer:Pointer; Length:LongWord):LongWord;

Description: Get Framebuffer Palette from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;

Description: Set Framebuffer Palette from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;

Description: Test Framebuffer Palette from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetLayer(var Layer:LongInt):LongWord;

Description: Get Framebuffer Layer from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetLayer(var Layer:LongInt):LongWord;

Description: Set Framebuffer Layer from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestLayer(var Layer:LongInt):LongWord;

Description: Test Framebuffer Layer from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferTestVsync:LongWord;

Description: Test Framebuffer Vertical Sync from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetVsync:LongWord;

Description: Set Framebuffer Vertical Sync from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetBacklight(Brightness:LongWord):LongWord;

Description: Set Framebuffer Backlight Brightness from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetNumDisplays(var NumDisplays:LongWord):LongWord;

Description: Get the number of displays from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetDisplayId(DisplayNum:LongWord):LongWord;

Description: Get the display id for the specified display number from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferSetDisplayNum(DisplayNum:LongWord):LongWord;

Description: Get the display number that all framebuffer requests will refer to using the Mailbox property tags channel

Note	None documented

function RPi2FramebufferGetDisplaySettings(DisplayNum:LongWord; var DisplaySettings:TDisplaySettings):LongWord;

Description: Get the display settings for the specified display number from the Mailbox property tags channel

Note	None documented

function RPi2FramebufferDisplayIdToName(DisplayId:LongWord):String;

Description: Get the name for the specified display id

Note	None documented

function RPi2TouchGetBuffer(var Address:PtrUInt):LongWord;

Description: Get the Touchscreen buffer from the Mailbox property tags channel

Note	On current firmware versions calling TouchGetBuffer will allocate a buffer from GPU memory and render subsequent calls to TouchSetBuffer ineffective. After an initial call to TouchSetBuffer calls to TouchGetBuffer will always return the CPU allocated buffer.

function RPi2TouchSetBuffer(Address:PtrUInt):LongWord;

Description: Set the Touchscreen buffer in the Mailbox property tags channel

Note	None documented

function RPi2VirtualGPIOGetBuffer(var Address:PtrUInt):LongWord;

Description: Get the Virtual GPIO buffer from the Mailbox property tags channel

Note	None documented

function RPi2VirtualGPIOSetBuffer(Address:PtrUInt):LongWord;

Description: Set the Virtual GPIO buffer in the Mailbox property tags channel

Note	None documented

function RPi2CursorSetDefault:LongWord;

Description: Set Cursor Default (Pixels) from the Mailbox property tags channel

Note	None documented

function RPi2CursorSetInfo(Width,Height,HotspotX,HotspotY:LongWord; Pixels:Pointer; Length:LongWord):LongWord;

Description: Set Cursor Info (Pixels) from the Mailbox property tags channel

Note	None documented

function RPi2CursorSetState(Enabled:Boolean; X,Y:LongWord; Relative:Boolean):LongWord;

Description: Set Cursor State (Enable, X, Y) from the Mailbox property tags channel

Relative	X, Y is relative to Display (Virtual) not Framebuffer (Physical).

function RPi2DMAGetChannels:LongWord;

Description: Get the available DMA Channels from the Mailbox property tags channel

Note	None documented

function RPi2VirtualGPIOAllocate:Boolean;

Description: Allocate the Virtual GPIO buffer either from memory or from the firmware

Note	None documented

function RPi2VirtualGPIOInputGet(Pin:LongWord):LongWord;

Description: To be documented

Note	None documented

function RPi2VirtualGPIOOutputSet(Pin,Level:LongWord):LongWord;

Description: To be documented

Note	None documented

function RPi2VirtualGPIOFunctionSelect(Pin,Mode:LongWord):LongWord;

Description: To be documented

Note	None documented

RPi2 thread functions

procedure RPi2SchedulerInit;

Description: Initialize the scheduler interrupt on the boot CPU

Note	None documented

procedure RPi2SchedulerStart(CPUID:LongWord);

Description: Initialize the scheduler interrupt on the specified secondary CPU

Note	None documented

procedure RPi2SecondaryBoot(CPUID:LongWord);

Description: To be documented

Note	None documented

RPi2 clock functions

procedure RPi2ClockInterrupt(Parameter:Pointer);

Description: Interrupt handler function for the clock interrupt

Note	This schedules another clock interrupt to occur CLOCK_CYCLES_PER_TICK in the future, then updates ClockTicks and ClockSeconds and checks for timers to trigger.

procedure RPi2ClockUpdate(Cycles:LongWord; var Last:LongWord);

Description: Setup a clock interrupt to trigger after the specified number of clock cycles

Cycles	Number of cycles after which the timer interrupt is to be triggered
Note	This refers to native clock cycles as specified by CLOCK_FREQUENCY

RPi2 scheduler functions

function RPi2SchedulerInterrupt(CPUID:LongWord; Thread:TThreadHandle; Parameter:Pointer):TThreadHandle;

Description: Interrupt handler function for the scheduler interrupt

Note	This schedules another scheduler interrupt to occur SCHEDULER_CLOCKS_PER_INTERRUPT in the future, then checks for threads to wakeup or timeout and the next thread to schedule.

procedure RPi2SchedulerUpdate(Cycles:LongWord; var Last:LongWord);

Description: Setup a scheduler interrupt to trigger after the specified number of clock cycles

Cycles	Number of cycles after which the scheduler interrupt is to be triggered
Note	This refers to native clock cycles as specified by RPI2_GENERIC_TIMER_FREQUENCY

procedure RPi2SchedulerSystemCall(Request:PSystemCallRequest);

Description: System Call handler for the scheduler

Note	This is registered to receive requests for the SYSTEM_CALL_CONTEXT_SWITCH and will perform a context switch from within an SWI

RPi2 framebuffer functions

function RPi2FramebufferDeviceAllocate(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;

Description: Allocate a framebuffer using the Mailbox Property Tags

Note	None documented

function RPi2FramebufferDeviceAllocateAlt(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;

Description: Allocate a framebuffer using a simple Mailbox Call

Note	None documented

function RPi2FramebufferDeviceRelease(Framebuffer:PFramebufferDevice):LongWord;

Description: To be documented

Note	None documented

function RPi2FramebufferDeviceBlank(Framebuffer:PFramebufferDevice; Blank:Boolean):LongWord;

Description: To be documented

Note	None documented

function RPi2FramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;

Description: To be documented

Note	None documented

function RPi2FramebufferDeviceSetBacklight(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;

Description: To be documented

Note	None documented

RPi2 helper functions

procedure RPi2Wait; assembler; nostackframe;

Description: To be documented

Note	None documented

procedure RPi2LongWait; assembler; nostackframe;

Description: To be documented

Note	None documented

procedure RPi2ShortWait; assembler; nostackframe;

Description: To be documented

Note	None documented

procedure RPi2SlowBlink; assembler; nostackframe;

Description: To be documented

Note	None documented

procedure RPi2FastBlink; assembler; nostackframe;

Description: To be documented

Note	None documented

procedure RPi2BootBlink; assembler; nostackframe;

Description: Blink the Activity LED without dependency on any other RTL setup

Note	None documented

procedure RPi2BootOutput(Value:LongWord);

Description: Output characters to UART0 without dependency on any other RTL setup

Note	This function is primarily intended for testing QEMU boot because it doesn't initialize the UART and won't work on real hardware. Based on hexstrings() function by dwelch67 (https://github.com/dwelch67)

procedure RPi2BootConsoleStart;

Description: To be documented

Note	None documented

procedure RPi2BootConsoleWrite(const Value:String);

Description: To be documented

Note	None documented

procedure RPi2BootConsoleWriteEx(const Value:String; X,Y:LongWord);

Description: To be documented

Note	None documented

function RPi2BootConsoleGetX:LongWord;

Description: To be documented

Note	None documented

function RPi2BootConsoleGetY:LongWord;

Description: To be documented

Note	None documented

function RPi2ConvertPowerIdRequest(PowerId:LongWord):LongWord;

Description: Convert Ultibo Power Id to BCM2836 Power Id

Note	None documented

function RPi2ConvertPowerStateRequest(PowerState:LongWord):LongWord;

Description: Convert Ultibo Power State to BCM2836 Power State

Note	None documented

function RPi2ConvertPowerStateResponse(PowerState:LongWord):LongWord;

Description: Convert BCM2836 Power State to Ultibo Power State

Note	None documented

function RPi2ConvertClockIdRequest(ClockId:LongWord):LongWord;

Description: Convert Ultibo Clock Id to BCM2836 Clock Id

Note	None documented

function RPi2ConvertClockStateRequest(ClockState:LongWord):LongWord;

Description: Convert Ultibo Clock State to BCM2836 Clock State

Note	None documented

function RPi2ConvertClockStateResponse(ClockState:LongWord):LongWord;

Description: Convert BCM2836 Clock State to Ultibo Clock State

Note	None documented

function RPi2ConvertVoltageIdRequest(VoltageId:LongWord):LongWord;

Description: Convert Ultibo Voltage Id to BCM2836 Voltage Id

Note	None documented

function RPi2ConvertTemperatureIdRequest(TemperatureId:LongWord):LongWord;

Description: Convert Ultibo Temperature Id to BCM2836 Temperature Id

Note	None documented

Return to Unit Reference

Difference between revisions of "Unit PlatformRPi2"

Latest revision as of 05:09, 23 November 2022

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@@ Line 5: / Line 5: @@
 ----
-'''Ultibo Platform interface unit for Raspberry Pi 2'''
+'''Ultibo Platform Interface unit for Raspberry Pi 2'''
 The RPi2 B has the Power LED connected to GPIO Pin 35 (Activity LED is now on GPIO Pin 47).
-The RPi3 B has the Activity LED connected to the GPU, access is via a Virtual GPIO (Power LED appears to be unavailable).
+The RPi3 B has the Activity LED connected to the GPU, access is via a Virtual GPIO (Power LED is only accessible via the GPIO expander driver).
+The RPi3 B+ has the Activity LED connected to GPIO Pin 29 (Power LED is only accessible via the GPIO expander driver).
+The RPi Zero2W has the Activity LED connected to GPIO Pin 29.
 === Constants ===
@@ Line 16: / Line 20: @@
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 ARM physical to VC IO mapping constants''' <code> RPI2_VCIO_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 ARM physical to VC IO mapping''' <code> RPI2_VCIO_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 27: / Line 31: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 ARM physical to VC bus mapping constants''' <code> RPI2_VCBUS_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 ARM physical to VC bus mapping''' <code> RPI2_VCBUS_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 38: / Line 42: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 secure world boot constants''' <code> RPI2_SECURE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 secure world boot''' <code> RPI2_SECURE_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
 | <code>RPI2_SECURE_BOOT = $00000001;</code>
-| If 1 then startup will attempt to switch back to secure world during boot process
+| If 1 then startup will attempt to switch back to secure world during boot process (Moved to ARMSecureBoot)
+|-
+| <code>RPI2_SECURE_BOOT_OFFSET = $000000D4;</code>
+| The address of the Secure Boot marker in the ARM boot stub
+|-
+| <code>RPI2_SECURE_BOOT_MARKER = $58495052;</code>
+| The Secure Boot marker (ASCII "RPIX")
 |-
 |}
@@ Line 49: / Line 59: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 address of StartupHandler on reset constants''' <code> RPI2_STARTUP_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 address of StartupHandler on reset''' <code> RPI2_STARTUP_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
 | <code>RPI2_STARTUP_ADDRESS = $00008000;</code>
-| style="width: 50%;"|&nbsp;
+| Address of StartupHandler on Reset (Obtain from linker)
 |-
 |}
@@ Line 60: / Line 70: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 page table address and size constants''' <code> RPI2_PAGE_TABLE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 page table address and size''' <code> RPI2_PAGE_TABLE_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 74: / Line 84: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 vector table address and size constants ''' <code> RPI2_VECTOR_TABLE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 vector table address and size''' <code> RPI2_VECTOR_TABLE_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 91: / Line 101: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 CPU count constants''' <code> RPI2_CPU_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 CPU count''' <code> RPI2_CPU_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 108: / Line 118: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 IRQ/FIQ start/routing constants''' <code> RPI2_IRQ_*, RPI2_FIQ_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 IRQ/FIQ start/routing''' <code> RPI2_IRQ_*, RPI2_FIQ_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 132: / Line 142: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 SWI constants''' <code> RPI2_SWI_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 SWI''' <code> RPI2_SWI_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 143: / Line 153: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 core timer prescaler constants''' <code> RPI2_*_TIMER_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 core timer prescaler''' <code> RPI2_*_TIMER_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 160: / Line 170: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 kernel image name constants''' <code> RPI2_KERNEL_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 kernel image name''' <code> RPI2_KERNEL_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 172: / Line 182: @@
 | <code>RPI2_KERNEL_COMMAND = 'cmdline.txt';</code>
 | &nbsp;
+|-
+|colspan="2"|<code>RPI2_FIRMWARE_FILES = 'bootcode.bin,start.elf,fixup.dat,armstub32-rpi2.bin,armstub32-rpi3.bin';</code>
+|-
+|colspan="2"|<code>RPI2_DTB_FILES = 'bcm2709-rpi-2-b.dtb,bcm2709-rpi-cm2.dtb,bcm2710-rpi-2-b.dtb,bcm2710-rpi-3-b.dtb,bcm2710-rpi-3-b-plus.dtb,bcm2710-rpi-cm3.dtb,bcm2710-rpi-zero-2.dtb,bcm2710-rpi-zero-2-w.dtb';</code>
 |-
 |}
@@ Line 177: / Line 191: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 GPIO power LED constants''' <code> RPI2_GPIO_PWRLED_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 GPIO power LED''' <code> RPI2_GPIO_PWRLED_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 224: / Line 238: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 GPIO activity LED constants ''' <code> RPI2_GPIO_ACTLED_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 GPIO activity LED''' <code> RPI2_GPIO_ACTLED_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 263: / Line 277: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 mailbox constants''' <code> RPI2_MAILBOX_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 mailbox''' <code> RPI2_MAILBOX_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 277: / Line 291: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
-<div style="font-size: 14px; padding-left: 12px;">'''RPi2 local mailbox constants''' <code> RPI2_LOCAL_MAILBOX_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 local mailbox''' <code> RPI2_LOCAL_MAILBOX_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 283: / Line 297: @@
 | <code>RPI2_LOCAL_MAILBOX_TIMEOUT = 100;</code>
 | Default timeout to wait for local mailbox calls to complete (Milliseconds)
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 20px; padding-bottom: 15px;">
+<div style="font-size: 14px; padding-left: 12px;">'''RPi2 framebuffer''' <code> RPI2_FRAMEBUFFER_* </code></div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>RPI2_FRAMEBUFFER_DESCRIPTION = 'BCM2836 Framebuffer';</code>
+| style="width: 50%;"|&nbsp;
 |-
 |}
@@ Line 296: / Line 321: @@
 ----
-''To be documented''
+'''RPi2 specific Ultibo variables'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>RPi2Initialized:Boolean;</code>
+| style="width: 40%;"|
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>RPi2CNTVOFFLow:LongWord = 0;</code>
+| style="width: 40%;"|The low 32 bits of the Virtual Counter Offset register at boot time (CPU0 only) (Set by Startup). Must be initialized to remain in .data or else rewritten to zero with .bss
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>RPi2CNTVOFFHigh:LongWord = 0;</code>
+| style="width: 40%;"|The high 32 bits of the Virtual Counter Offset register at boot time (CPU0 only) (Set by Startup). Must be initialized to remain in .data or else rewritten to zero with .bss
+|-
+|}
+'''Timer variables'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>TimerRegisters:PBCM2836SystemTimerRegisters;</code>
+| style="width: 40%;"|
+|-
+|}
+'''Mailbox variables'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>Mailbox0Registers:PBCM2836Mailbox0Registers;</code>
+| style="width: 40%;"|
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>Mailbox1Registers:PBCM2836Mailbox1Registers;</code>
+| style="width: 40%;"|
+|-
+|}
+'''Interrupt variables'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>InterruptRegisters:PBCM2836InterruptRegisters;</code>
+| style="width: 40%;"|
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>InterruptEntries:array[0..(BCM2836_GPU_IRQ_COUNT + BCM2836_ARM_IRQ_COUNT - 1)] of PInterruptEntry;</code>
+| style="width: 40%;"|
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>LocalInterruptEntries:array[RPI2_IRQ_LOCAL_START..(BCM2836_IRQ_COUNT - 1),0..(RPI2_CPU_COUNT - 1)] of PInterruptEntry;</code>
+| style="width: 40%;"|
+|-
+|}
+'''System call'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>SystemCallEntries:array[0..RPI2_SWI_COUNT - 1] of TSystemCallEntry;</code>
+| style="width: 40%;"|
+|-
+|}
+'''IRQ/FIQ'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>IRQEnabled:array[0..2] of LongWord;</code>
+| style="width: 40%;"|3 groups of IRQs to Enable/Disable (See: TBCM2836InterruptRegisters)
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>FIQEnabled:LongWord;</code>
+| style="width: 40%;"|The single IRQ number to Enable as FIQ instead (See: TBCM2836InterruptRegisters)
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>LocalIRQEnabled:array[0..(RPI2_CPU_COUNT - 1)] of LongWord;</code>
+| style="width: 40%;"|1 group of local IRQs to Enable/Disable per CPU (See: TBCM2836ARMLocalRegisters)
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>LocalFIQEnabled:array[0..(RPI2_CPU_COUNT - 1)] of LongWord;</code>
+| style="width: 40%;"|1 group of local FIQs to Enable/Disable per CPU (See: TBCM2836ARMLocalRegisters)
+|-
+|}
+'''Watchdog variables'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>WatchdogRegisters:PBCM2836PMWatchdogRegisters;</code>
+| style="width: 40%;"|
+|-
+|}
+'''ARM local'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>ARMLocalRegisters:PBCM2836ARMLocalRegisters;</code>
+| style="width: 40%;"|
+|-
+|}
+'''Virtual GPIO'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>VirtualGPIOBuffer:TBCM2837VirtualGPIOBuffer;</code>
+| style="width: 40%;"|
+|-
+|}
+<br />
 === Function declarations ===
@@ Line 310: / Line 464: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 322: / Line 476: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 334: / Line 488: @@
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 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 346: / Line 500: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 361: / Line 515: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 373: / Line 527: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 385: / Line 539: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 397: / Line 551: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 409: / Line 563: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
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 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 433: / Line 587: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 445: / Line 599: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 457: / Line 611: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 469: / Line 623: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 481: / Line 635: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 493: / Line 647: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 505: / Line 659: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 517: / Line 671: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 529: / Line 683: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 541: / Line 695: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 553: / Line 707: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | Data = first 28 bits, Channel = last 4 bits
 |-
@@ Line 565: / Line 719: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | Data = first 28 bits, Channel = last 4 bits
 |-
@@ Line 577: / Line 731: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | Data = first 28 bits, Channel = last 4 bits
 Data pointer must be 16 byte aligned to allow for the 4 bit channel number
@@ Line 590: / Line 744: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | Data = first 28 bits, Channel = last 4 bits
 Data pointer must be 16 byte aligned to allow for the 4 bit channel number
@@ Line 603: / Line 757: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | Data = first 28 bits, Channel = last 4 bits
 Data pointer must be 16 byte aligned to allow for the 4 bit channel number
@@ Line 616: / Line 770: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | Data = first 28 bits, Channel = last 4 bits
 Data pointer must be 16 byte aligned to allow for the 4 bit channel number
@@ Line 624: / Line 778: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2RequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2MailboxPropertyTag(Tag:LongWord; Data:Pointer; Size:LongWord):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Request registration of the supplied handler to the specified IRQ number</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Request a property tag (Get/Set) from the mailbox property channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''CPUID'''
+! Data
-| CPU to route IRQ to
+| Data does not need to include mailbox property channel header or footer. Data pointer does not need any specific alignment or caching attributes.
 |-
-! '''Number'''
+! Size
-| IRQ number to register
+| Size must be a multiple of 4 bytes. Size must include the size of the request and response which use the same buffer.
 |-
-! '''Handler'''
+|}
-| Interrupt handler function to register
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2RequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Request registration of the supplied handler to the specified IRQ number</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''HandlerEx'''
+! Note
-| Extended Interrupt handler function to register
+| None documented
-|-
-! '''Note'''
-| Only one of Handler or HandlerEx can be specified
 |-
 |}
@@ Line 653: / Line 810: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''CPUID'''
+! Note
-| CPU to route IRQ to
+| None documented
-|-
-! '''Number'''
-| IRQ number to deregister
-|-
-! '''Handler'''
-| Interrupt handler function to deregister
-|-
-! '''HandlerEx'''
-| Extended Interrupt handler function to deregister
-|-
-! '''Note'''
-| Only one of Handler or HandlerEx can be specified
 |-
 |}
@@ Line 677: / Line 822: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''CPUID'''
+! Note
-| CPU to route FIQ to
+| None documented
-|-
-! '''Number'''
-| FIQ number to register
-|-
-! '''Handler'''
-| Interrupt handler function to register
-|-
-! '''HandlerEx'''
-| Extended Interrupt handler function to register
-|-
-! '''Note'''
-| Only one of Handler or HandlerEx can be specified
 |-
 |}
@@ Line 701: / Line 834: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''CPUID'''
+! Note
-| CPU to route FIQ to
+| None documented
 |-
-! '''Number'''
+|}
-| FIQ number to deregister
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2RegisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Handler'''
+! Note
-| Interrupt handler function to deregister
+| None documented
 |-
-! '''HandlerEx'''
+|}
-| Extended Interrupt handler function to deregister
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2DeregisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
-| Only one of Handler or HandlerEx can be specified
+| None documented
 |-
 |}
@@ Line 725: / Line 870: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''CPUID'''
+! Note
-| The CPU ID to register the System Call against (or CPU_ID_ALL)
+| None documented
-|-
-! '''Number'''
-| The System Call number to be registered
-|-
-! '''Handler'''
-| The handler function to be registered
-|-
-! '''HandlerEx'''
-| The extended handler function to be registered
-|-
-! '''Note'''
-| Only one of Handler or HandlerEx can be specified
 |-
 |}
@@ Line 749: / Line 882: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''CPUID'''
+! Note
-| The CPU ID to deregister the System Call from (or CPU_ID_ALL)
+| None documented
-|-
-! '''Number'''
-| The System Call number to be deregistered
-|-
-! '''Handler'''
-| The handler function to be deregistered
-|-
-! '''HandlerEx'''
-| The extended handler function to be deregistered
-|-
-! '''Note'''
-| Only one of Handler or HandlerEx can be specified
 |-
 |}
@@ Line 768: / Line 889: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2GetInterruptEntry(Number:LongWord):TInterruptEntry;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2GetInterruptEntry(Number,Instance:LongWord; var Interrupt:TInterruptEntry):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the interrupt entry for the specified interrupt number</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the interrupt entry for the specified interrupt number and instance</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 780: / Line 901: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2GetLocalInterruptEntry(CPUID,Number:LongWord):TInterruptEntry;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2GetLocalInterruptEntry(CPUID,Number,Instance:LongWord; var Interrupt:TInterruptEntry):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the local interrupt entry for the specified interrupt number</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the local interrupt entry for the specified interrupt number and instance</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 797: / Line 918: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 809: / Line 930: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 821: / Line 942: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 833: / Line 954: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 840: / Line 961: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2CPUGetMemory(var Address:PtrUInt; var Length:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2CPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the CPU Memory from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 857: / Line 978: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 864: / Line 985: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2GPUGetMemory(var Address:PtrUInt; var Length:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2GPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the GPU Memory from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 881: / Line 1,002: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 893: / Line 1,014: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 905: / Line 1,026: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 917: / Line 1,038: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 929: / Line 1,050: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2FirmwareGetThrottled:LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the Firmware Throttling state from the Mailbox property tags channel</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
 | None documented
 |-
@@ Line 941: / Line 1,074: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 953: / Line 1,086: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 965: / Line 1,098: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | Power Lock not required due to Mailbox Property Call serialization
 |-
@@ Line 977: / Line 1,110: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | On the Raspberry Pi this comes from the System Timer free running counter which runs at 1MHz and therefore overflows every 4295 seconds
 |-
@@ Line 989: / Line 1,122: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | On the Raspberry Pi this comes from the System Timer free running counter which runs at 1MHz, the clock interrupt also uses this timer to increment the clock every second and therefore keep time.
 |-
@@ Line 1,001: / Line 1,134: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,013: / Line 1,146: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,025: / Line 1,158: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,037: / Line 1,170: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,049: / Line 1,182: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,061: / Line 1,194: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,073: / Line 1,206: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,085: / Line 1,218: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,097: / Line 1,230: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,109: / Line 1,242: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,121: / Line 1,254: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,133: / Line 1,266: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,145: / Line 1,278: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,157: / Line 1,290: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,169: / Line 1,302: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,181: / Line 1,314: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,193: / Line 1,326: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,205: / Line 1,338: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,217: / Line 1,350: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,229: / Line 1,362: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,241: / Line 1,374: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,253: / Line 1,386: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,265: / Line 1,398: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,277: / Line 1,410: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,289: / Line 1,422: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,301: / Line 1,434: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,313: / Line 1,446: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,325: / Line 1,458: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,337: / Line 1,470: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,349: / Line 1,482: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,361: / Line 1,494: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,373: / Line 1,506: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,385: / Line 1,518: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,397: / Line 1,530: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,409: / Line 1,542: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,421: / Line 1,554: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,433: / Line 1,566: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,445: / Line 1,578: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,457: / Line 1,590: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,469: / Line 1,602: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,481: / Line 1,614: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,493: / Line 1,626: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,505: / Line 1,638: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,517: / Line 1,650: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,529: / Line 1,662: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,541: / Line 1,674: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,553: / Line 1,686: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,565: / Line 1,698: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,577: / Line 1,710: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,589: / Line 1,722: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferGetLayer(var Layer:LongInt):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get Framebuffer Layer from the Mailbox property tags channel</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferSetLayer(var Layer:LongInt):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Framebuffer Layer from the Mailbox property tags channel</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferTestLayer(var Layer:LongInt):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Test Framebuffer Layer from the Mailbox property tags channel</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
 | None documented
 |-
@@ Line 1,601: / Line 1,770: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,613: / Line 1,782: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,625: / Line 1,794: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,632: / Line 1,801: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2TouchGetBuffer(var Address:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferGetNumDisplays(var NumDisplays:LongWord):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the Touchscreen buffer from the Mailbox property tags channel</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the number of displays from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,644: / Line 1,813: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOGetBuffer(var Address:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferGetDisplayId(DisplayNum:LongWord):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the Virtual GPIO buffer from the Mailbox property tags channel</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the display id for the specified display number from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,656: / Line 1,825: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2CursorSetDefault:LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferSetDisplayNum(DisplayNum:LongWord):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Cursor Default (Pixels) from the Mailbox property tags channel</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the display number that all framebuffer requests will refer to using the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,668: / Line 1,837: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2CursorSetInfo(Width,Height,HotspotX,HotspotY:LongWord; Pixels:Pointer; Length:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferGetDisplaySettings(DisplayNum:LongWord; var DisplaySettings:TDisplaySettings):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Cursor Info (Pixels) from the Mailbox property tags channel</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the display settings for the specified display number from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,680: / Line 1,849: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2CursorSetState(Enabled:Boolean; X,Y:LongWord; Relative:Boolean):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferDisplayIdToName(DisplayId:LongWord):String;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Cursor State (Enable, X, Y) from the Mailbox property tags channel</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the name for the specified display id</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Relative'''
+! Note
-| X, Y is relative to Display (Virtual) not Framebuffer (Physical)
+| None documented
 |-
 |}
@@ Line 1,692: / Line 1,861: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2DMAGetChannels:LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2TouchGetBuffer(var Address:PtrUInt):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the available DMA Channels from the Mailbox property tags channel</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the Touchscreen buffer from the Mailbox property tags channel</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| On current firmware versions calling TouchGetBuffer will allocate a buffer from GPU memory and render subsequent calls to TouchSetBuffer ineffective. After an initial call to TouchSetBuffer calls to TouchGetBuffer will always return the CPU allocated buffer.
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2TouchSetBuffer(Address:PtrUInt):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set the Touchscreen buffer in the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,704: / Line 1,885: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOInputGet(Pin:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOGetBuffer(var Address:PtrUInt):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the Virtual GPIO buffer from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,716: / Line 1,897: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOOutputSet(Pin,Level:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOSetBuffer(Address:PtrUInt):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set the Virtual GPIO buffer in the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,728: / Line 1,909: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOFunctionSelect(Pin,Mode:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2CursorSetDefault:LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Cursor Default (Pixels) from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,739: / Line 1,920: @@
 </div></div>
 <br />
-'''RPi2 thread functions'''
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">procedure RPi2SchedulerInit;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2CursorSetInfo(Width,Height,HotspotX,HotspotY:LongWord; Pixels:Pointer; Length:LongWord):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize the scheduler interrupt on the boot CPU</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Cursor Info (Pixels) from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,755: / Line 1,933: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">procedure RPi2SchedulerStart(CPUID:LongWord);</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2CursorSetState(Enabled:Boolean; X,Y:LongWord; Relative:Boolean):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize the scheduler interrupt on the specified secondary CPU</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Cursor State (Enable, X, Y) from the Mailbox property tags channel</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Relative
+| X, Y is relative to Display (Virtual) not Framebuffer (Physical).
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2DMAGetChannels:LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the available DMA Channels from the Mailbox property tags channel</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
 | None documented
 |-
@@ Line 1,767: / Line 1,957: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">procedure RPi2SecondaryBoot(CPUID:LongWord);</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOAllocate:Boolean;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Allocate the Virtual GPIO buffer either from memory or from the firmware</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOInputGet(Pin:LongWord):LongWord;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,778: / Line 1,980: @@
 </div></div>
 <br />
-'''RPi2 IRQ functions'''
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2DispatchIRQ(CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOOutputSet(Pin,Level:LongWord):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Process any pending IRQ requests</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
-| Called by ARMv7IRQHandler in PlatformARMv7
+| None documented
-A DataMemoryBarrier is executed before and after calling this function
 |-
 |}
@@ Line 1,795: / Line 1,993: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2HandleIRQ(Number,CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2VirtualGPIOFunctionSelect(Pin,Mode:LongWord):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Call the handler function for an IRQ that was received, or halt if it doesn't exist</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,807: / Line 2,005: @@
 <br />
-'''RPi2 FIQ functions'''
+'''RPi2 thread functions'''
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2DispatchFIQ(CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;</pre>
+<pre style="border: 0; padding-bottom:0px;">procedure RPi2SchedulerInit;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Process any pending FIQ requests</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize the scheduler interrupt on the boot CPU</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
-| Called by ARMv7FIQHandler in PlatformARMv7
+| None documented
-A DataMemoryBarrier is executed before and after calling this function
 |-
 |}
@@ Line 1,823: / Line 2,020: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2HandleFIQ(Number,CPUID:LongWord; Thread:TThreadHandle):TThreadHandle;</pre>
+<pre style="border: 0; padding-bottom:0px;">procedure RPi2SchedulerStart(CPUID:LongWord);</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Call the handler function for an FIQ that was received, or halt if it doesn't exist</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Initialize the scheduler interrupt on the specified secondary CPU</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,834: / Line 2,031: @@
 </div></div>
 <br />
-'''RPi2 SWI functions'''
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2DispatchSWI(CPUID:LongWord; Thread:TThreadHandle; Request:PSystemCallRequest):TThreadHandle;</pre>
+<pre style="border: 0; padding-bottom:0px;">procedure RPi2SecondaryBoot(CPUID:LongWord);</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Process an SWI request</div>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
-| Called by ARMv7SoftwareInterruptHandler in PlatformARMv7
+| None documented
-A DataMemoryBarrier is executed before and after calling this function
 |-
 |}
@@ Line 1,859: / Line 2,052: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | This schedules another clock interrupt to occur CLOCK_CYCLES_PER_TICK in the future, then updates ClockTicks and ClockSeconds and checks for timers to trigger.
 |-
@@ Line 1,871: / Line 2,064: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Cycles'''
+! Cycles
 | Number of cycles after which the timer interrupt is to be triggered
 |-
-! '''Note'''
+! Note
 | This refers to native clock cycles as specified by CLOCK_FREQUENCY
 |-
@@ Line 1,889: / Line 2,082: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | This schedules another scheduler interrupt to occur SCHEDULER_CLOCKS_PER_INTERRUPT in the future, then checks for threads to wakeup or timeout and the next thread to schedule.
 |-
@@ Line 1,901: / Line 2,094: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Cycles'''
+! Cycles
 | Number of cycles after which the scheduler interrupt is to be triggered
 |-
-! '''Note'''
+! Note
 | This refers to native clock cycles as specified by RPI2_GENERIC_TIMER_FREQUENCY
 |-
@@ Line 1,916: / Line 2,109: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | This is registered to receive requests for the SYSTEM_CALL_CONTEXT_SWITCH and will perform a context switch from within an SWI
 |-
@@ Line 1,931: / Line 2,124: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,943: / Line 2,136: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,955: / Line 2,148: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,967: / Line 2,160: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,974: / Line 2,167: @@
 <br />
 <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address,Size,Flags:LongWord):LongWord;</pre>
+<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;</pre>
 <div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 1,991: / Line 2,184: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
-| None documented
-|-
-|}
-</div></div>
-<br />
-<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
-<pre style="border: 0; padding-bottom:0px;">function RPi2FramebufferDeviceSetProperties(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;</pre>
-<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
-<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
-{| class="wikitable" style="font-size: 14px; background: white;"
-|-
-! '''Note'''
 | None documented
 |-
@@ Line 2,018: / Line 2,199: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,030: / Line 2,211: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,042: / Line 2,223: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,054: / Line 2,235: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,066: / Line 2,247: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,078: / Line 2,259: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure RPi2BootOutput(Value:LongWord);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Output characters to UART0 without dependency on any other RTL setup</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| This function is primarily intended for testing QEMU boot because it doesn't initialize the UART and won't work on real hardware.
+Based on hexstrings() function by dwelch67 (https://github.com/dwelch67)
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure RPi2BootConsoleStart;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure RPi2BootConsoleWrite(const Value:String);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure RPi2BootConsoleWriteEx(const Value:String; X,Y:LongWord);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2BootConsoleGetX:LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function RPi2BootConsoleGetY:LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
 | None documented
 |-
@@ Line 2,090: / Line 2,344: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,102: / Line 2,356: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,114: / Line 2,368: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,126: / Line 2,380: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,138: / Line 2,392: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,150: / Line 2,404: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,162: / Line 2,416: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-
@@ Line 2,174: / Line 2,428: @@
 {| class="wikitable" style="font-size: 14px; background: white;"
 |-
-! '''Note'''
+! Note
 | None documented
 |-