mirror of
https://github.com/reactos/reactos.git
synced 2025-04-27 00:50:23 +00:00
bc2e271c94
Allow prep serial in kdcom (and stop clobbering the data miss handler). Clean up boot mapping a bit. Silence some boot time spam. Enable not present page handler (yes, this routing actually works). Scan physical memory on the (virtually 100%) chance that open firmware will somehow have a buggy implementation of the memory object, or we're on prep hardware. Initialize syscall trap early, so we can do DbgPrint. svn path=/trunk/; revision=29928
327 lines
9 KiB
C
327 lines
9 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/ke/powerpc/kiinit.c
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* PURPOSE: Kernel Initialization for x86 CPUs
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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* Art Yerkes (ayerkes@speakeasy.net)
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*/
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/* INCLUDES *****************************************************************/
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#include <ntoskrnl.h>
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#include <reactos/ppcboot.h>
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#define NDEBUG
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#include <debug.h>
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#include <ppcdebug.h>
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#include "ppcmmu/mmu.h"
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/* GLOBALS *******************************************************************/
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/* Ku bit should be set, so that we get the best options for page protection */
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#define PPC_SEG_Ku 0x40000000
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#define PPC_SEG_Ks 0x20000000
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extern LOADER_MODULE KeLoaderModules[64];
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extern ULONG KeLoaderModuleCount;
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extern ULONG_PTR MmFreeLdrLastKernelAddress;
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KPRCB PrcbData[MAXIMUM_PROCESSORS];
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/* FUNCTIONS *****************************************************************/
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/*
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* Trap frame:
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* r0 .. r32
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* lr, ctr, srr0, srr1, dsisr
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*/
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__asm__(".text\n\t"
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".globl syscall_start\n\t"
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".globl syscall_end\n\t"
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".globl KiSystemService\n\t"
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"syscall_start:\n\t"
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"mr 2,1\n\t"
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"lis 1,KiSystemService1@ha\n\t"
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"addi 1,1,KiSystemService1@l\n\t"
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"mfsrr0 0\n\t"
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"mtsrr0 1\n\t"
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"lis 1,_kernel_trap_stack@ha\n\t"
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"addi 1,1,_kernel_trap_stack@l\n\t"
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"subi 1,1,0x100\n\t"
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"rfi\n\t"
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"syscall_end:\n\t"
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".space 4");
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extern int syscall_start[], syscall_end;
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VOID
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NTAPI
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KiSetupSyscallHandler()
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{
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paddr_t handler_target;
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int *source;
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for(source = syscall_start, handler_target = 0xc00;
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source < &syscall_end;
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source++, handler_target += sizeof(int))
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SetPhys(handler_target, *source);
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}
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VOID
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NTAPI
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KiInitializePcr(IN ULONG ProcessorNumber,
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IN PKIPCR Pcr,
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IN PKTHREAD IdleThread,
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IN PVOID DpcStack)
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{
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Pcr->MajorVersion = PCR_MAJOR_VERSION;
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Pcr->MinorVersion = PCR_MINOR_VERSION;
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Pcr->CurrentIrql = PASSIVE_LEVEL;
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Pcr->PrcbData = &PrcbData[ProcessorNumber];
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Pcr->PrcbData->MajorVersion = PRCB_MAJOR_VERSION;
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Pcr->PrcbData->MinorVersion = 0;
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Pcr->PrcbData->Number = 0; /* UP for now */
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Pcr->PrcbData->SetMember = 1;
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#if DBG
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Pcr->PrcbData->BuildType = PRCB_BUILD_DEBUG;
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#else
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Pcr->PrcbData->BuildType = 0;
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#endif
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Pcr->PrcbData->DpcStack = DpcStack;
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KiProcessorBlock[ProcessorNumber] = Pcr->PrcbData;
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}
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extern ULONG KiGetFeatureBits();
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extern VOID KiSetProcessorType();
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extern VOID KiGetCacheInformation();
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VOID
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NTAPI
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KiInitializeKernel(IN PKPROCESS InitProcess,
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IN PKTHREAD InitThread,
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IN PVOID IdleStack,
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IN PKPRCB Prcb,
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IN CCHAR Number,
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IN PROS_LOADER_PARAMETER_BLOCK LoaderBlock)
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{
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ULONG FeatureBits;
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LARGE_INTEGER PageDirectory;
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PVOID DpcStack;
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/* Detect and set the CPU Type */
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KiSetProcessorType();
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/* Initialize the Power Management Support for this PRCB */
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PoInitializePrcb(Prcb);
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/* Get the processor features for the CPU */
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FeatureBits = KiGetFeatureBits();
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/* Save feature bits */
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Prcb->FeatureBits = FeatureBits;
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/* Get cache line information for this CPU */
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KiGetCacheInformation();
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/* Initialize spinlocks and DPC data */
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KiInitSpinLocks(Prcb, Number);
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/* Check if this is the Boot CPU */
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if (!Number)
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{
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/* Set Node Data */
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KeNodeBlock[0] = &KiNode0;
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Prcb->ParentNode = KeNodeBlock[0];
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KeNodeBlock[0]->ProcessorMask = Prcb->SetMember;
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/* Set boot-level flags */
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KeProcessorArchitecture = 0;
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KeProcessorLevel = (USHORT)Prcb->CpuType;
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KeFeatureBits = FeatureBits;
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/* Set the current MP Master KPRCB to the Boot PRCB */
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Prcb->MultiThreadSetMaster = Prcb;
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/* Initialize portable parts of the OS */
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KiInitSystem();
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/* Initialize the Idle Process and the Process Listhead */
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InitializeListHead(&KiProcessListHead);
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PageDirectory.QuadPart = 0;
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KeInitializeProcess(InitProcess,
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0,
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0xFFFFFFFF,
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&PageDirectory,
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TRUE);
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InitProcess->QuantumReset = MAXCHAR;
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}
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else
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{
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/* FIXME */
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DPRINT1("SMP Boot support not yet present\n");
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}
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/* Setup the Idle Thread */
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KeInitializeThread(InitProcess,
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InitThread,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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IdleStack);
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InitThread->NextProcessor = Number;
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InitThread->Priority = HIGH_PRIORITY;
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InitThread->State = Running;
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InitThread->Affinity = 1 << Number;
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InitThread->WaitIrql = DISPATCH_LEVEL;
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InitProcess->ActiveProcessors = 1 << Number;
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/* Set up the thread-related fields in the PRCB */
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//Prcb->CurrentThread = InitThread;
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Prcb->NextThread = NULL;
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//Prcb->IdleThread = InitThread;
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/* Initialize the Kernel Executive */
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ExpInitializeExecutive(0, (PLOADER_PARAMETER_BLOCK)LoaderBlock);
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/* Only do this on the boot CPU */
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if (!Number)
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{
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/* Calculate the time reciprocal */
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KiTimeIncrementReciprocal =
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KiComputeReciprocal(KeMaximumIncrement,
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&KiTimeIncrementShiftCount);
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/* Update DPC Values in case they got updated by the executive */
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Prcb->MaximumDpcQueueDepth = KiMaximumDpcQueueDepth;
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Prcb->MinimumDpcRate = KiMinimumDpcRate;
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Prcb->AdjustDpcThreshold = KiAdjustDpcThreshold;
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/* Allocate the DPC Stack */
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DpcStack = MmCreateKernelStack(FALSE, 0);
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if (!DpcStack) KeBugCheckEx(NO_PAGES_AVAILABLE, 1, 0, 0, 0);
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Prcb->DpcStack = DpcStack;
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}
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/* Free Initial Memory */
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// MiFreeInitMemory();
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while (1)
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{
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LARGE_INTEGER Timeout;
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Timeout.QuadPart = 0x7fffffffffffffffLL;
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KeDelayExecutionThread(KernelMode, FALSE, &Timeout);
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}
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/* Bug Check and loop forever if anything failed */
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KEBUGCHECK(0);
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for(;;);
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}
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extern int KiPageFaultHandler(int trap, ppc_trap_frame_t *frame);
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/* Use this for early boot additions to the page table */
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VOID
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NTAPI
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KiSystemStartup(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
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{
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ULONG Cpu;
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ppc_map_info_t info[4];
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PKIPCR Pcr = (PKIPCR)KPCR_BASE;
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PKPRCB Prcb;
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__asm__("mr 13,%0" : : "r" (KPCR_BASE));
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/* Set the page fault handler to the kernel */
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MmuSetTrapHandler(3,KiPageFaultHandler);
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MmuSetTrapHandler(4,KiPageFaultHandler);
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// Make 0xf... special
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MmuAllocVsid(2, 0x8000);
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MmuSetVsid(15,16,2);
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/* Get the current CPU */
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Cpu = KeNumberProcessors;
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if (!Cpu)
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{
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/* We'll allocate a page from the end of the kernel area for KPCR. This code will probably
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* change when we get SMP support.
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*/
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info[0].phys = 0;
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info[0].proc = 2;
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info[0].addr = (vaddr_t)Pcr;
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info[0].flags = MMU_KRW_UR;
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info[1].phys = 0;
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info[1].proc = 2;
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info[1].addr = ((vaddr_t)Pcr) + (1 << PAGE_SHIFT);
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info[1].flags = MMU_KRW_UR;
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info[2].phys = 0;
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info[2].proc = 2;
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info[2].addr = (vaddr_t)KI_USER_SHARED_DATA;
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info[2].flags = MMU_KRW_UR;
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info[3].phys = 0;
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info[3].proc = 2;
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info[3].addr = (vaddr_t)KIP0PCRADDRESS;
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info[3].flags = MMU_KRW_UR;
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MmuMapPage(info, 4);
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}
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/* Skip initial setup if this isn't the Boot CPU */
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if (Cpu) goto AppCpuInit;
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/* Initialize the PCR */
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RtlZeroMemory(Pcr, PAGE_SIZE);
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KiInitializePcr(Cpu,
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Pcr,
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&KiInitialThread.Tcb,
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KiDoubleFaultStack);
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/* Set us as the current process */
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KiInitialThread.Tcb.ApcState.Process = &KiInitialProcess.Pcb;
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/* Setup CPU-related fields */
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AppCpuInit:
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Pcr->Number = Cpu;
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Pcr->SetMember = 1 << Cpu;
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Prcb = KeGetCurrentPrcb();
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Prcb->SetMember = 1 << Cpu;
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/* Initialize the Processor with HAL */
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HalInitializeProcessor(Cpu, LoaderBlock);
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/* Set active processors */
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KeActiveProcessors |= Pcr->SetMember;
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KeNumberProcessors++;
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/* Initialize the Debugger for the Boot CPU */
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if (!Cpu) KdInitSystem (0, LoaderBlock);
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/* Check for break-in */
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if (KdPollBreakIn())
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{
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DbgBreakPointWithStatus(1);
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}
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/* Raise to HIGH_LEVEL */
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KfRaiseIrql(HIGH_LEVEL);
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/* Call main kernel intialization */
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KiInitializeKernel(&KiInitialProcess.Pcb,
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&KiInitialThread.Tcb,
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P0BootStack,
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Prcb,
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Cpu,
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(PVOID)LoaderBlock);
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}
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VOID
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NTAPI
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KiInitMachineDependent(VOID)
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{
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}
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void abort()
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{
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KeBugCheck(0);
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while(1);
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}
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