Difference between revisions of "Unit PlatformRPi2"

Latest revision as of 05:09, 23 November 2022

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`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_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_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_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_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

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>
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-<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>
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-<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: @@
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-<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>
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 |-
 | <code>RPI2_STARTUP_ADDRESS = $00008000;</code>
-| style="width: 50%;"|&nbsp;
+| Address of StartupHandler on Reset (Obtain from linker)
 |-
 |}
@@ Line 60: / Line 70: @@
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-<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>
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-<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>
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-<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>
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-<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>
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-<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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-<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>
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-<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>
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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: @@
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-<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>
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-<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>
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-<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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-<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 ===
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 <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
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`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_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';`

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

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_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)

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.

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

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