Difference between revisions of "Unit PlatformRPi3"

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----
 
----
  
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'''Ultibo Platform interface unit for Raspberry Pi 3'''
+
'''Ultibo Platform Interface unit for Raspberry Pi 3'''
  
 
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 the GPU, access is via a Virtual GPIO (Power LED is only accessible via the GPIO expander driver).
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| <code>RPI3_KERNEL_COMMAND = 'cmdline.txt';</code>
 
| <code>RPI3_KERNEL_COMMAND = 'cmdline.txt';</code>
 
| &nbsp;
 
| &nbsp;
 +
|-
 +
|colspan="2"|<code>RPI3_FIRMWARE_FILES = 'bootcode.bin,start.elf,fixup.dat,armstub32-rpi3.bin,armstub64-rpi3.bin';</code>
 +
|-
 +
|colspan="2"|<code>RPI3_DTB_FILES = '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>
 
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<pre style="border: 0; padding-bottom:0px;">function RPi3FramebufferTestPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;</pre>
 
<pre style="border: 0; padding-bottom:0px;">function RPi3FramebufferTestPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;</pre>
 
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Test Framebuffer Palette from the Mailbox property tags channel</div>
 
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Test Framebuffer Palette from the Mailbox property tags channel</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! Note
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| None documented
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|-
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|}
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</div></div>
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<br />
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function RPi3FramebufferGetLayer(var Layer:LongInt):LongWord;</pre>
 +
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get Framebuffer Layer from the Mailbox property tags channel</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! Note
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| None documented
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|-
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|}
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</div></div>
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<br />
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">function RPi3FramebufferSetLayer(var Layer:LongInt):LongWord;</pre>
 +
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Set Framebuffer Layer from the Mailbox property tags channel</div>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! Note
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| None documented
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|-
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|}
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</div></div>
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<br />
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<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 RPi3FramebufferTestLayer(var Layer:LongInt):LongWord;</pre>
 +
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Test Framebuffer Layer from the Mailbox property tags channel</div>
 
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<pre style="border: 0; padding-bottom:0px;">function RPi3FramebufferDeviceSetBacklight(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;</pre>
 
<pre style="border: 0; padding-bottom:0px;">function RPi3FramebufferDeviceSetBacklight(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;</pre>
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<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 
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<pre style="border: 0; padding-bottom:0px;">function RPi3FramebufferDeviceSetProperties(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;</pre>
 
 
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
 
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! Note
 
! Note
 
| None documented
 
| None documented
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|-
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|}
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</div></div>
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<br />
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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<pre style="border: 0; padding-bottom:0px;">procedure RPi3BootOutput(Value:LongWord);</pre>
 +
<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Output characters to UART0 without dependency on any other RTL setup</div>
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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! Note
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| 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)
 
|-
 
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Latest revision as of 05:09, 23 November 2022

Return to Unit Reference


Description

Ultibo Platform Interface unit for Raspberry Pi 3

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).

Constants


RPi3 ARM physical to VC IO mapping RPI3_VCIO_*
RPI3_VCIO_ALIAS = BCM2837_VCIO_ALIAS; The VCIO Alias (For ARM Physcial to VC IO translation)


RPi3 ARM physical to VC bus mapping RPI3_VCBUS_*
RPI3_VCBUS_ALIAS = BCM2837_VCBUS_C_ALIAS; The currently selected VCBUS Alias (For ARM Physcial to VC Bus translation)


RPi3 secure world boot RPI3_SECURE_*
RPI3_SECURE_BOOT = $00000001; If 1 then startup will attempt to switch back to secure world during boot process (Moved to ARMSecureBoot)
RPI3_SECURE_BOOT_OFFSET = $000000D4; The address of the Secure Boot marker in the ARM boot stub
RPI3_SECURE_BOOT_MARKER = $58495052; The Secure Boot marker (ASCII "RPIX")


RPi3 address of StartupHandler on reset RPI3_STARTUP_*
RPI3_STARTUP_ADDRESS = $00008000; Address of StartupHandler on Reset (Obtain from linker)


RPi3 page table address and size RPI3_PAGE_TABLE_*
RPI3_PAGE_TABLE_BASE = $00004000; Place the first level Page Table after the interrupt vectors at 0x00001000 and before the code start at 0x00008000
RPI3_PAGE_TABLE_SIZE = SIZE_16K; ARM Cortex A7 first level Page Table is exactly 16KB in size (4096 32 bit (4 byte) entries)


RPi3 vector table address and size RPI3_VECTOR_TABLE_*
RPI3_VECTOR_TABLE_BASE = $00001000; Place the Interrupt Vector Table at 0x00001000 before the code start at 0x00008000
RPI3_VECTOR_TABLE_SIZE = SIZE_64; The Interrupt Vector Table is exactly 64 bytes (16 32 bit (4 byte) entries)
RPI3_VECTOR_TABLE_COUNT = 8; The Interrupt Vector Table contains 8 entries on an ARMv7 device


RPi3 CPU count RPI3_CPU_*
RPI3_CPU_COUNT = BCM2837_CPU_COUNT;  
RPI3_CPU_BOOT = CPU_ID_0;  
RPI3_CPU_MASK = CPU_AFFINITY_0 or CPU_AFFINITY_1 or CPU_AFFINITY_2 or CPU_AFFINITY_3;  


RPi3 IRQ/FIQ start/routing RPI3_IRQ_*, RPI3_FIQ_*
RPI3_IRQ_START = 0; System wide IRQs start at zero
 
RPI3_IRQ_ROUTING = CPU_ID_0; Route system wide IRQs to CPU0
RPI3_FIQ_ROUTING = CPU_ID_0; Route system wide FIQs to CPU0
 
RPI3_IRQ_LOCAL_START = BCM2837_GPU_IRQ_COUNT + BCM2837_ARM_IRQ_COUNT; Local IRQs start after GPU and ARM IRQs


RPi3 SWI RPI3_SWI_*
RPI3_SWI_COUNT = 256; Number of available SWI entries


RPi3 core timer prescaler RPI3_*_TIMER_*
RPI3_CORE_TIMER_PRESCALER = $06AAAAAB; Divide the Crystal Clock by 19.2 to give a 1MHz Core Timer
RPI3_CORE_TIMER_FREQUENCY = 1000000; The Core Timer frequency from the prescaler setting above
RPI3_GENERIC_TIMER_FREQUENCY = 1000000; The ARM Generic Timer frequency from the prescaler setting above


RPi3 kernel image name RPI3_KERNEL_*
RPI3_KERNEL_NAME = 'kernel7.img';  
 
RPI3_KERNEL_NAME = 'kernel8.img';  
 
RPI3_KERNEL_CONFIG = 'config.txt';  
RPI3_KERNEL_COMMAND = 'cmdline.txt';  
RPI3_FIRMWARE_FILES = 'bootcode.bin,start.elf,fixup.dat,armstub32-rpi3.bin,armstub64-rpi3.bin';
RPI3_DTB_FILES = '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';


RPi3 mailbox RPI3_MAILBOX_*
RPI3_MAILBOX_TIMEOUT = 100; Default timeout to wait for mailbox calls to complete (Milliseconds)
RPI3_MAILBOX_TIMEOUT_EX = 1000; Extended timeout to wait for mailbox calls to complete (Milliseconds)


RPi3 local mailbox RPI3_LOCAL_MAILBOX_*
RPI3_LOCAL_MAILBOX_TIMEOUT = 100; Default timeout to wait for local mailbox calls to complete (Milliseconds)


RPi3 framebuffer RPI3_FRAMEBUFFER_*
RPI3_FRAMEBUFFER_DESCRIPTION = 'BCM2837 Framebuffer';  


Type definitions

None defined

Public variables


RPi3 specific Ultibo variables

RPi3Initialized:Boolean;
RPi3CNTVOFFLow: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
RPi3CNTVOFFHigh: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:PBCM2837SystemTimerRegisters;

Mailbox variables

Mailbox0Registers:PBCM2837Mailbox0Registers;
Mailbox1Registers:PBCM2837Mailbox1Registers;

Interrupt variables

InterruptRegisters:PBCM2837InterruptRegisters;
InterruptEntries:array[0..(BCM2837_GPU_IRQ_COUNT + BCM2837_ARM_IRQ_COUNT - 1)] of PInterruptEntry;
LocalInterruptEntries:array[RPI3_IRQ_LOCAL_START..(BCM2837_IRQ_COUNT - 1),0..(RPI3_CPU_COUNT - 1)] of PInterruptEntry;

System call

SystemCallEntries:array[0..RPI3_SWI_COUNT - 1] of TSystemCallEntry;

IRQ/FIQ

IRQEnabled:array[0..2] of LongWord; 3 groups of IRQs to Enable/Disable (See: TBCM2837InterruptRegisters)
FIQEnabled:LongWord; The single IRQ number to Enable as FIQ instead (See: TBCM2837InterruptRegisters)
LocalIRQEnabled:array[0..(RPI3_CPU_COUNT - 1)] of LongWord; 1 group of local IRQs to Enable/Disable per CPU (See: TBCM2837ARMLocalRegisters)
LocalFIQEnabled:array[0..(RPI3_CPU_COUNT - 1)] of LongWord; 1 group of local FIQs to Enable/Disable per CPU (See: TBCM2837ARMLocalRegisters)

Watchdog variables

WatchdogRegisters:PBCM2837PMWatchdogRegisters;

ARM local

ARMLocalRegisters:PBCM2837ARMLocalRegisters;

Virtual GPIO

VirtualGPIOBuffer:TBCM2837VirtualGPIOBuffer;


Function declarations


Initialization functions 

procedure RPi3Init;
Description: To be documented
Note None documented 


procedure RPi3SecondarySwitch; assembler; nostackframe;
Description: Secondary CPU switch from HYP mode handler
Note None documented 


procedure RPi3SecondarySecure; assembler; nostackframe;
Description: Secondary CPU switch to secure mode handler
Note None documented 


procedure RPi3SecondaryHandler; assembler; nostackframe;
Description: Secondary CPU startup handler routine
Note None documented


RPi3 platform functions 

procedure RPi3SMPInit;
Description: To be documented
Note None documented 


procedure RPi3BoardInit;
Description: To be documented
Note None documented 


procedure RPi3MemoryInit;
Description: To be documented
Note None documented 


procedure RPi3ClockInit;
Description: To be documented
Note None documented 


procedure RPi3PowerInit;
Description: To be documented
Note None documented 


procedure RPi3MailboxInit;
Description: To be documented
Note None documented 


procedure RPi3InterruptInit;
Description: To be documented
Note None documented 


procedure RPi3PeripheralInit;
Description: To be documented
Note None documented 


procedure RPi3FramebufferInit;
Description: To be documented
Note None documented 


procedure RPi3PageTableInit;
Description: Initialize the Hardware Page Tables before enabling the MMU
Note None documented 


procedure RPi3PowerLEDEnable;
Description: To be documented
Note None documented 


procedure RPi3PowerLEDOn;
Description: To be documented
Note None documented 


procedure RPi3PowerLEDOff;
Description: To be documented
Note None documented 


procedure RPi3ActivityLEDEnable;
Description: To be documented
Note None documented 


procedure RPi3ActivityLEDOn;
Description: To be documented
Note None documented 


procedure RPi3ActivityLEDOff;
Description: To be documented
Note None documented 


function RPi3MailboxReceive(Mailbox,Channel:LongWord):LongWord;
Description: Receive from specified mailbox on specified channel
Note Data = first 28 bits, Channel = last 4 bits 


procedure RPi3MailboxSend(Mailbox,Channel,Data:LongWord);
Description: Send to specified mailbox on specified channel
Note Data = first 28 bits, Channel = last 4 bits 


function RPi3MailboxCall(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 RPi3MailboxCallEx(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 RPi3MailboxPropertyCall(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 RPi3MailboxPropertyCallEx(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 RPi3MailboxPropertyTag(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 RPi3RequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified IRQ number
Note Non documented 


function RPi3ReleaseExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified IRQ number
Note Non documented 


function RPi3RequestExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified FIQ number
Note Non documented 


function RPi3ReleaseExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified FIQ number
Note Non documented 


function RPi3RegisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified interrupt number (Where Applicable)
Note None documented 


function RPi3DeregisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified interrupt number (Where Applicable)
Note None documented 


function RPi3RegisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;
Description: Request registration of the supplied extended handler to the specified System Call number
Note Non documented 


function RPi3DeregisterSystemCallEx(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 RPi3GetInterruptEntry(Number,Instance:LongWord; var Interrupt:TInterruptEntry):LongWord;
Description: Get the interrupt entry for the specified interrupt number and instance
Note None documented 


function RPi3GetLocalInterruptEntry(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 RPi3GetSystemCallEntry(Number:LongWord):TSystemCallEntry;
Description: Get the system call entry for the specified system call number
Note None documented 


function RPi3SystemRestart(Delay:LongWord):LongWord;
Description: To be documented
Note None documented 


function RPi3SystemShutdown(Delay:LongWord):LongWord;
Description: To be documented
Note None documented 


function RPi3SystemGetCommandLine:String;
Description: Get the Command Line from the Mailbox property tags channel
Note None documented 


function RPi3CPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;
Description: Get the CPU Memory from the Mailbox property tags channel
Note None documented 


function RPi3GPUGetState:LongWord;
Description: To be documented
Note None documented 


function RPi3GPUGetMemory(var Address:PtrUInt; var Length:UInt64):LongWord;
Description: Get the GPU Memory from the Mailbox property tags channel
Note None documented 


function RPi3BoardGetModel:LongWord;
Description: Get the Board Model from the Mailbox property tags channel
Note None documented 


function RPi3BoardGetSerial:Int64;
Description: Get the Board Serial from the Mailbox property tags channel
Note None documented 


function RPi3BoardGetRevision:LongWord;
Description: Get the Board Revision from the Mailbox property tags channel
Note None documented 


function RPi3BoardGetMACAddress:String;
Description: Get the Board MAC Address from the Mailbox property tags channel
Note None documented 


function RPi3FirmwareGetRevision:LongWord;
Description: Get the Firmware Revision from the Mailbox property tags channel
Note None documented 


function RPi3FirmwareGetThrottled:LongWord;
Description: Get the Firmware Throttling state from the Mailbox property tags channel
Note None documented 


function RPi3PowerGetWait(PowerId:LongWord):LongWord;
Description: Get the Power Wait from the Mailbox property tags channel
Note None documented 


function RPi3PowerGetState(PowerId:LongWord):LongWord;
Description: Get the Power State from the Mailbox property tags channel
Note None documented 


function RPi3PowerSetState(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 RPi3ClockGetCount: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 RPi3ClockGetTotal: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 RPi3ClockGetRate(ClockId:LongWord):LongWord;
Description: Get the Clock Rate from the Mailbox property tags channel
Note None documented 


function RPi3ClockSetRate(ClockId,Rate:LongWord; Turbo:Boolean):LongWord;
Description: Set the Clock Rate in the Mailbox property tags channel
Note None documented 


function RPi3ClockGetState(ClockId:LongWord):LongWord;
Description: Get the Clock State from the Mailbox property tags channel
Note None documented 


function RPi3ClockSetState(ClockId,State:LongWord):LongWord;
Description: Set the Clock State in the Mailbox property tags channel
Note None documented 


function RPi3ClockGetMinRate(ClockId:LongWord):LongWord;
Description: Get the Clock Min Rate from the Mailbox property tags channel
Note None documented 


function RPi3ClockGetMaxRate(ClockId:LongWord):LongWord;
Description: Get the Clock Max Rate from the Mailbox property tags channel
Note None documented 


function RPi3TurboGetState(TurboId:LongWord):LongWord;
Description: Get the Turbo State from the Mailbox property tags channel
Note None documented 


function RPi3TurboSetState(TurboId,State:LongWord):LongWord;
Description: Set the Turbo State in the Mailbox property tags channel
Note None documented 


function RPi3VoltageGetValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Value from the Mailbox property tags channel
Note None documented 


function RPi3VoltageSetValue(VoltageId,Value:LongWord):LongWord;
Description: Set the Voltage Value in the Mailbox property tags channel
Note None documented 


function RPi3VoltageGetMinValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Min Value from the Mailbox property tags channel
Note None documented 


function RPi3VoltageGetMaxValue(VoltageId:LongWord):LongWord;
Description: Get the Voltage Max Value from the Mailbox property tags channel
Note None documented 


function RPi3TemperatureGetCurrent(TemperatureId:LongWord):LongWord;
Description: Get the Temperature Current from the Mailbox property tags channel
Note None documented 


function RPi3TemperatureGetMaximum(TemperatureId:LongWord):LongWord;
Description: Get the Temperature Maximum Model from the Mailbox property tags channel
Note None documented 


function RPi3GPUMemoryAllocate(Length,Alignment,Flags:LongWord):THandle;
Description: Allocate GPU Memory from the Mailbox property tags channel
Note None documented 


function RPi3GPUMemoryRelease(Handle:THandle):LongWord;
Description: Release GPU Memory from the Mailbox property tags channel
Note None documented 


function RPi3GPUMemoryLock(Handle:THandle):LongWord;
Description: Lock GPU Memory from the Mailbox property tags channel
Note None documented 


function RPi3GPUMemoryUnlock(Handle:THandle):LongWord;
Description: Unlock GPU Memory from the Mailbox property tags channel
Note None documented 


function RPi3GPUExecuteCode(Address:Pointer; R0,R1,R2,R3,R4,R5:LongWord):LongWord;
Description: Execute GPU Code from the Mailbox property tags channel
Note None documented 


function RPi3DispmanxHandleGet(Resource:THandle):THandle;
Description: Get Dispmanx Memory Handle from the Mailbox property tags channel
Note None documented 


function RPi3EDIDBlockGet(Block:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Get EDID Block from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferAllocate(Alignment:LongWord; var Address,Length:LongWord):LongWord;
Description: Allocate Framebuffer from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferRelease:LongWord;
Description: Release Framebuffer from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetState(State:LongWord):LongWord;
Description: Set Framebuffer State (Blank Screen) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetDimensions(var Width,Height,Top,Bottom,Left,Right:LongWord):LongWord;
Description: Get Framebuffer Dimensions from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetPhysical(var Width,Height:LongWord):LongWord;
Description: Get Framebuffer Physical size from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetPhysical(var Width,Height:LongWord):LongWord;
Description: Set Framebuffer Physical size from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestPhysical(var Width,Height:LongWord):LongWord;
Description: Test Framebuffer Physical size from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetVirtual(var Width,Height:LongWord):LongWord;
Description: Get Framebuffer Virtual size from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetVirtual(var Width,Height:LongWord):LongWord;
Description: Set Framebuffer Virtual size from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestVirtual(var Width,Height:LongWord):LongWord;
Description: Test Framebuffer Virtual size from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetDepth(var Depth:LongWord):LongWord;
Description: Get Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetDepth(var Depth:LongWord):LongWord;
Description: Set Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestDepth(var Depth:LongWord):LongWord;
Description: Test Framebuffer Depth (Bits per pixel) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetPixelOrder(var Order:LongWord):LongWord;
Description: Get Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetPixelOrder(var Order:LongWord):LongWord;
Description: Set Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestPixelOrder(var Order:LongWord):LongWord;
Description: Test Framebuffer Pixel Order (RGB) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetAlphaMode(var Mode:LongWord):LongWord;
Description: Get Framebuffer Alpha Mode from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetAlphaMode(var Mode:LongWord):LongWord;
Description: Set Framebuffer Alpha Mode from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestAlphaMode(var Mode:LongWord):LongWord;
Description: Test Framebuffer Alpha Mode from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetPitch:LongWord;
Description: Get Framebuffer Pitch (Bytes per line) from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetOffset(var X,Y:LongWord):LongWord;
Description: Get Framebuffer Virtual Offset from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetOffset(var X,Y:LongWord):LongWord;
Description: Set Framebuffer Virtual Offset from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestOffset(var X,Y:LongWord):LongWord;
Description: Test Framebuffer Virtual Offset from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Get Framebuffer Overscan from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Set Framebuffer Overscan from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestOverscan(var Top,Bottom,Left,Right:LongWord):LongWord;
Description: Test Framebuffer Overscan from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetPalette(Buffer:Pointer; Length:LongWord):LongWord;
Description: Get Framebuffer Palette from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Set Framebuffer Palette from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestPalette(Start,Count:LongWord; Buffer:Pointer; Length:LongWord):LongWord;
Description: Test Framebuffer Palette from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetLayer(var Layer:LongInt):LongWord;
Description: Get Framebuffer Layer from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetLayer(var Layer:LongInt):LongWord;
Description: Set Framebuffer Layer from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestLayer(var Layer:LongInt):LongWord;
Description: Test Framebuffer Layer from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferTestVsync:LongWord;
Description: Test Framebuffer Vertical Sync from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetVsync:LongWord;
Description: Set Framebuffer Vertical Sync from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetBacklight(Brightness:LongWord):LongWord;
Description: Set Framebuffer Backlight Brightness from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetNumDisplays(var NumDisplays:LongWord):LongWord;
Description: Get the number of displays from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferGetDisplayId(DisplayNum:LongWord):LongWord;
Description: Get the display id for the specified display number from the Mailbox property tags channel
Note None documented 


function RPi3FramebufferSetDisplayNum(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 RPi3FramebufferGetDisplaySettings(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 RPi3FramebufferDisplayIdToName(DisplayId:LongWord):String;
Description: Get the name for the specified display id
Note None documented 


function RPi3TouchGetBuffer(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 RPi3TouchSetBuffer(Address:PtrUInt):LongWord;
Description: Set the Touchscreen buffer in the Mailbox property tags channel
Note None documented 


function RPi3VirtualGPIOGetBuffer(var Address:PtrUInt):LongWord;
Description: Get the Virtual GPIO buffer from the Mailbox property tags channel
Note None documented 


function RPi3VirtualGPIOSetBuffer(Address:PtrUInt):LongWord;
Description: Set the Virtual GPIO buffer in the Mailbox property tags channel
Note None documented 


function RPi3CursorSetDefault:LongWord;
Description: Set Cursor Default (Pixels) from the Mailbox property tags channel
Note None documented 


function RPi3CursorSetInfo(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 RPi3CursorSetState(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 RPi3DMAGetChannels:LongWord;
Description: Get the available DMA Channels from the Mailbox property tags channel
Note None documented 


function RPi3VirtualGPIOAllocate:Boolean;
Description: Allocate the Virtual GPIO buffer either from memory or from the firmware
Note None documented 


function RPi3VirtualGPIOInputGet(Pin:LongWord):LongWord;
Description: To be documented
Note None documented 


function RPi3VirtualGPIOOutputSet(Pin,Level:LongWord):LongWord;
Description: To be documented
Note None documented 


function RPi3VirtualGPIOFunctionSelect(Pin,Mode:LongWord):LongWord;
Description: To be documented
Note None documented


RPi3 thread functions 

procedure RPi3SchedulerInit;
Description: Initialize the scheduler interrupt on the boot CPU
Note None documented 


procedure RPi3SchedulerStart(CPUID:LongWord);
Description: Initialize the scheduler interrupt on the specified secondary CPU
Note None documented 


procedure RPi3SecondaryBoot(CPUID:LongWord);
Description: To be documented
Note None documented


RPi3 SWI functions 

function RPi3DispatchSWI(CPUID:LongWord; Thread:TThreadHandle; Request:PSystemCallRequest):TThreadHandle;
Description: Process an SWI request
Note Called by ARMv8SoftwareInterruptHandler in PlatformARMv8

A DataMemoryBarrier is executed before and after calling this function


RPi3 clock functions 

procedure RPi3ClockInterrupt(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 RPi3ClockUpdate(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


RPi3 scheduler functions 

function RPi3SchedulerInterrupt(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 RPi3SchedulerUpdate(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 RPI3_GENERIC_TIMER_FREQUENCY 


procedure RPi3SchedulerSystemCall(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


RPi3 framebuffer functions 

function RPi3FramebufferDeviceAllocate(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Allocate a framebuffer using the Mailbox Property Tags
Note None documented 


function RPi3FramebufferDeviceAllocateAlt(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Allocate a framebuffer using a simple Mailbox Call
Note None documented 


function RPi3FramebufferDeviceRelease(Framebuffer:PFramebufferDevice):LongWord;
Description: To be documented
Note None documented 


function RPi3FramebufferDeviceBlank(Framebuffer:PFramebufferDevice; Blank:Boolean):LongWord;
Description: To be documented
Note None documented 


function RPi3FramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;
Description: To be documented
Note None documented 


function RPi3FramebufferDeviceSetBacklight(Framebuffer:PFramebufferDevice; Brightness:LongWord):LongWord;
Description: To be documented
Note None documented


RPi3 helper functions 

procedure RPi3Wait; assembler; nostackframe;
Description: To be documented
Note None documented 


procedure RPi3LongWait; assembler; nostackframe;
Description: To be documented
Note None documented 


procedure RPi3ShortWait; assembler; nostackframe;
Description: To be documented
Note None documented 


procedure RPi3SlowBlink; assembler; nostackframe;
Description: To be documented
Note None documented 


procedure RPi3FastBlink; assembler; nostackframe;
Description: To be documented
Note None documented 


procedure RPi3BootBlink; assembler; nostackframe;
Description: Blink the Activity LED without dependency on any other RTL setup
Note None documented 


procedure RPi3BootOutput(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 RPi3BootConsoleStart;
Description: To be documented
Note None documented 


procedure RPi3BootConsoleWrite(const Value:String);
Description: To be documented
Note None documented 


procedure RPi3BootConsoleWriteEx(const Value:String; X,Y:LongWord);
Description: To be documented
Note None documented 


function RPi3BootConsoleGetX:LongWord;
Description: To be documented
Note None documented 


function RPi3BootConsoleGetY:LongWord;
Description: To be documented
Note None documented 


function RPi3ConvertPowerIdRequest(PowerId:LongWord):LongWord;
Description: Convert Ultibo Power Id to BCM2837 Power Id
Note None documented 


function RPi3ConvertPowerStateRequest(PowerState:LongWord):LongWord;
Description: Convert Ultibo Power State to BCM2837 Power State
Note None documented 


function RPi3ConvertPowerStateResponse(PowerState:LongWord):LongWord;
Description: Convert BCM2837 Power State to Ultibo Power State
Note None documented 


function RPi3ConvertClockIdRequest(ClockId:LongWord):LongWord;
Description: Convert Ultibo Clock Id to BCM2837 Clock Id
Note None documented 


function RPi3ConvertClockStateRequest(ClockState:LongWord):LongWord;
Description: Convert Ultibo Clock State to BCM2837 Clock State
Note None documented 


function RPi3ConvertClockStateResponse(ClockState:LongWord):LongWord;
Description: Convert BCM2837 Clock State to Ultibo Clock State
Note None documented 


function RPi3ConvertVoltageIdRequest(VoltageId:LongWord):LongWord;
Description: Convert Ultibo Voltage Id to BCM2837 Voltage Id
Note None documented 


function RPi3ConvertTemperatureIdRequest(TemperatureId:LongWord):LongWord;
Description: Convert Ultibo Temperature Id to BCM2837 Temperature Id
Note None documented


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