Unit PlatformQEMUVPB
From Ultibo.org
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Contents
[hide]Description
Ultibo Platform Interface unit for QEMU VersatilePB
Constants
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QEMUVPB specific constants
QEMUVPB_*
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QEMUVPB page table
QEMUVPB_PAGE_TABLE_*
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QEMUVPB vector table
QEMUVPB_VECTOR_TABLE_*
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QEMUVPB CPU count
QEMUVPB_CPU_*
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QEMUVPB SWI
QEMUVPB_SWI_*
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QEMUVPB kernel name
QEMUVPB_KERNEL_*
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PL110 specific constants
PL110_*
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PL110 mode
PL110_MODE_*
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PL110 register offset
PL110_CLCD_*
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PL110 CLCD timing0
PL110_CLCD_TIMING0_*
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PL110 CLCD timing1
PL110_CLCD_TIMING1_*
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PL110 CLCD timing2
PL110_CLCD_TIMING2_*
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PL110 CLCD timing3
PL110_CLCD_TIMING3_*
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PL110 CLCD control
PL110_CLCD_CONTROL_*
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PL110 control
PL110_CONTROL_*
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PL110 timing0
PL110_TIMING0_*
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PL110 timing1
PL110_TIMING1_*
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PL110 timing2
PL110_TIMING2_*
Type definitions
PL110 CLCD registers
PL110 framebuffer
Public variables
QEMUVPB specific Ultibo variables
QEMUVPBInitialized:Boolean;
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Clock variables
ClockGetLast:LongWord;
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Value of 24MHz Counter on last ClockGetCount or ClockGetTotal call |
ClockGetBase:Int64;
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Base value for 64-bit clock, incremented each time the 24MHz Counter rolls over (Only accurate if ClockGetCount/ClockGetTotal is called at least once per 178 seconds) |
ClockGetLock:THandle = INVALID_HANDLE_VALUE;
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Lock handle for creating 64-bit clock from a 32-bit register |
ClockGetTimer:THandle = INVALID_HANDLE_VALUE;
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Timer handle for ensuring clock is read periodically to maintain accurracy |
Timer variables
Timer0Registers:PSP804TimerRegisters;
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Use Timer0 for Clock |
Timer2Registers:PSP804TimerRegisters;
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Use Timer2 for Scheduler |
Interrupt variables
PrimaryInterruptRegisters:PPL190InterruptRegisters;
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SecondaryInterruptRegisters:PVersatilePBInterruptRegisters;
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InterruptEntries:array[0..(VERSATILEPB_IRQ_COUNT - 1)] of PInterruptEntry;
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System call
SystemCallEntries:array[0..QEMUVPB_SWI_COUNT - 1] of TSystemCallEntry;
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IRQ/FIQ
IRQEnabled:array[0..1] of LongWord;
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2 groups of IRQs to Enable/Disable (See: TPL190InterruptRegisters) |
FIQEnabled:array[0..1] of LongWord;
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2 groups of FIQs to Enable/Disable (See: TPL190InterruptRegisters) |
Function declarations
Initialization functions
QEMUVPB platform functions
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procedure QEMUVPBPageTableInit;
Description: Initialize the Hardware Page Tables before enabling the MMU
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function QEMUVPBRequestExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified IRQ number
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function QEMUVPBReleaseExIRQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified IRQ number
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function QEMUVPBRequestExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified FIQ number
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function QEMUVPBReleaseExFIQ(CPUID,Number:LongWord; Handler:TInterruptHandler; HandlerEx:TInterruptExHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified FIQ number
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function QEMUVPBRegisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;
Description: Request registration of the supplied handler to the specified interrupt number (Where Applicable)
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function QEMUVPBDeregisterInterrupt(Number,Mask,Priority,Flags:LongWord; Handler:TSharedInterruptHandler; Parameter:Pointer):LongWord;
Description: Request deregistration of the supplied handler from the specified interrupt number (Where Applicable)
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function QEMUVPBRegisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;
Description: Request registration of the supplied extended handler to the specified System Call number
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function QEMUVPBDeregisterSystemCallEx(CPUID,Number:LongWord; Handler:TSystemCallHandler; HandlerEx:TSystemCallExHandler):LongWord;
Description: Request deregistration of the supplied extended handler from the specified System Call number
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function QEMUVPBGetInterruptEntry(Number,Instance:LongWord; var Interrupt:TInterruptEntry):LongWord;
Description: Get the interrupt entry for the specified interrupt number and instance
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function QEMUVPBGetSystemCallEntry(Number:LongWord):TSystemCallEntry;
Description: Get the system call entry for the specified system call number
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function QEMUVPBClockGetCount:LongWord;
Description: Gets the current system clock count (32 least significant bits of total)
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procedure QEMUVPBClockGetTimer(Data:Pointer);
Description: Timer procedure to ensure ClockGetTotal is called at least once per rollover interval
QEMUVPB thread functions
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procedure QEMUVPBSchedulerInit;
Description: Initialize the scheduler interrupt on the boot CPU
QEMUVPB clock functions
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procedure QEMUVPBClockInterrupt(Parameter:Pointer);
Description: Interrupt handler function for the clock interrupt
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procedure QEMUVPBClockUpdate(Cycles:LongWord; var Last:LongWord);
Description: Setup a clock interrupt to trigger after the specified number of clock cycles
QEMUVPB scheduler functions
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function QEMUVPBSchedulerInterrupt(CPUID:LongWord; Thread:TThreadHandle; Parameter:Pointer):TThreadHandle;
Description: Interrupt handler function for the scheduler interrupt
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procedure QEMUVPBSchedulerUpdate(Cycles:LongWord; var Last:LongWord);
Description: Setup a scheduler interrupt to trigger after the specified number of clock cycles
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procedure QEMUVPBSchedulerSystemCall(Request:PSystemCallRequest);
Description: System Call handler for the scheduler
QEMUVPB framebuffer functions
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function QEMUVPBFramebufferDeviceAllocate(Framebuffer:PFramebufferDevice; Properties:PFramebufferProperties):LongWord;
Description: Implementation of FramebufferDeviceAllocate API for PL110 Framebuffer
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function QEMUVPBFramebufferDeviceRelease(Framebuffer:PFramebufferDevice):LongWord;
Description: Implementation of FramebufferDeviceRelease API for PL110 Framebuffer
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function QEMUVPBFramebufferDeviceBlank(Framebuffer:PFramebufferDevice; Blank:Boolean):LongWord;
Description: Implementation of FramebufferDevicBlank API for PL110 Framebuffer
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function QEMUVPBFramebufferDeviceCommit(Framebuffer:PFramebufferDevice; Address:PtrUInt; Size,Flags:LongWord):LongWord;
Description: Implementation of FramebufferDeviceCommit API for PL110 Framebuffer
QEMUVPB helper functions
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procedure QEMUVPBBootBlink; assembler; nostackframe;
Description: Output characters to UART0 without dependency on any other RTL setup
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procedure QEMUVPBBootOutput(Value:LongWord);
Description: Output characters to UART0 without dependency on any other RTL setup
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procedure QEMUVPBBootConsoleWriteEx(const Value:String; X,Y:LongWord);
Description: To be documented
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