/*++ Copyright (c) 1991 Microsoft Corporation Copyright (c) 1992, 1993 Wyse Technology Module Name: spsproc.c Abstract: Wyse7000i Start Next Processor c code. This module implements the initialization of the system dependent functions that define the Hardware Architecture Layer (HAL) for an Wyse MP 7000i Author: Ken Reneris (kenr) 22-Jan-1991 Environment: Kernel mode only. Revision History: --*/ #include "halp.h" UCHAR HalName[] = "Wyse7000i MP HAL"; #if DBG ULONG ProcSub( IN UCHAR RoutineNumber ); #define enproc(x) ProcSub(x) #define exproc(x) ProcSub((x)|0x80) #else //DBG #define enproc(x) #define exproc(x) #endif //DBG PVOID HalpRemapVirtualAddress( IN PVOID VirtualAddress, IN PVOID PhysicalAddress, IN BOOLEAN WriteThrough ); VOID HalpMapCR3 ( IN ULONG VirtAddress, IN PVOID PhysicalAddress, IN ULONG Length ); ULONG HalpBuildTiledCR3 ( IN PKPROCESSOR_STATE ProcessorState ); VOID HalpFreeTiledCR3 ( VOID ); VOID HalpInitOtherBuses (VOID); BOOLEAN HalpInitMP ( IN ULONG Phase, IN PLOADER_PARAMETER_BLOCK LoaderBlock ); ULONG __cdecl icu_sync_master ( ULONG i_sync, UCHAR i_exp_cfg, ULONG i_timeout ); #define LOW_MEMORY 0x000100000 #define MAX_PT 8 extern VOID StartPx_PMStub(VOID); #ifdef ALLOC_PRAGMA #pragma alloc_text(INIT,HalpInitMP) #pragma alloc_text(INIT,HalAllProcessorsStarted) #pragma alloc_text(INIT,HalReportResourceUsage) #pragma alloc_text(INIT,HalReportResourceUsage) #pragma alloc_text(INIT,HalpInitOtherBuses) #pragma alloc_text(INIT,HalpFreeTiledCR3) #pragma alloc_text(INIT,HalpMapCR3) #pragma alloc_text(INIT,HalpBuildTiledCR3) #endif UCHAR ProcessorsPresent; // bitmap by WWB slot of cpu's present PUCHAR MpLowStub; // pointer to low memory bootup stub PVOID MpLowStubPhysicalAddress; // pointer to low memory bootup stub PUCHAR MppIDT; // pointer to physical memory 0:0 PVOID MpFreeCR3[MAX_PT]; // remember pool memory to free BOOLEAN HalpInitMP ( IN ULONG Phase, IN PLOADER_PARAMETER_BLOCK LoaderBlock ) /*++ Routine Description: Allows MP initialization from HalInitSystem. Arguments: Same as HalInitSystem Return Value: none. --*/ { ULONG paddress; ULONG adjust; PKPCR pPCR; enproc(0x0B); pPCR = KeGetPcr(); if (Phase == 0) { MppIDT = HalpMapPhysicalMemory (0, 1); // // Map system firmware to last 128Kb of memory // paddress = 0xFFFE0000; // address of last 128Kb of memory for (adjust = 0x20000 / PAGE_SIZE; adjust; --adjust) { HalpRemapVirtualAddress((PVOID) paddress, (PVOID) paddress, FALSE); paddress += PAGE_SIZE; } // // Are other processors installed and running? // if ( ProcessorsPresent ) { // any other cpu's installed? adjust = icu_sync_master( 0x80, // SYNC_CONTINUE ProcessorsPresent,// cpu's installed 5 ); // 5*15ms timeout ProcessorsPresent = (UCHAR) (adjust >> 8); // running cpu's } if ( !ProcessorsPresent ) { exproc(0x0B); return TRUE; } // // Allocate some low memory for processor bootup stub // MpLowStubPhysicalAddress = (PVOID)HalpAllocPhysicalMemory (LoaderBlock, LOW_MEMORY, 1, FALSE); if (!MpLowStubPhysicalAddress) { ProcessorsPresent = 0; // can't start other cpu's exproc(0x0B); return TRUE; } MpLowStub = (PCHAR) HalpMapPhysicalMemory (MpLowStubPhysicalAddress, 1); exproc(0x0B); return TRUE; } else { // // Phase 1 // ; // nothing to do } exproc(0x0B); } BOOLEAN HalAllProcessorsStarted ( VOID ) { return TRUE; } VOID HalReportResourceUsage ( VOID ) /*++ Routine Description: The registery is now enabled - time to report resources which are used by the HAL. Arguments: Return Value: --*/ { ANSI_STRING AHalName; UNICODE_STRING UHalName; HalInitSystemPhase2 (); RtlInitAnsiString (&AHalName, HalName); RtlAnsiStringToUnicodeString (&UHalName, &AHalName, TRUE); HalpReportResourceUsage ( &UHalName, // descriptive name Eisa // Wyse7000 is an Eisa machines ); RtlFreeUnicodeString (&UHalName); } VOID HalpResetAllProcessors ( VOID ) { // Just return, that will invoke the standard PC reboot code } ULONG HalpBuildTiledCR3 ( IN PKPROCESSOR_STATE ProcessorState ) /*++ Routine Description: When the x86 processor is reset it starts in real-mode. In order to move the processor from real-mode to protected mode with flat addressing the segment which loads CR0 needs to have it's linear address mapped to machine the phyiscal location of the segment for said instruction so the processor can continue to execute the following instruction. This function is called to built such a tiled page directory. In addition, other flat addresses are tiled to match the current running flat address for the new state. Once the processor is in flat mode, we move to a NT tiled page which can then load up the remaining processors state. Arguments: ProcessorState - The state the new processor should start in. Return Value: Physical address of Tiled page directory --*/ { enproc(0x0C); #define GetPdeAddress(va) ((PHARDWARE_PTE)((((((ULONG)(va)) >> 22) & 0x3ff) << 2) + (PUCHAR)MpFreeCR3[0])) #define GetPteAddress(va) ((PHARDWARE_PTE)((((((ULONG)(va)) >> 12) & 0x3ff) << 2) + (PUCHAR)pPageTable)) // bugbug kenr 27mar92 - fix physical memory usage! MpFreeCR3[0] = ExAllocatePool (NonPagedPool, PAGE_SIZE); RtlZeroMemory (MpFreeCR3[0], PAGE_SIZE); // // Map page for real mode stub (one page) // HalpMapCR3 ((ULONG) MpLowStubPhysicalAddress, MpLowStubPhysicalAddress, PAGE_SIZE); // // Map page for protect mode stub (one page) // HalpMapCR3 ((ULONG) &StartPx_PMStub, NULL, 0x1000); // // Map page(s) for processors GDT // HalpMapCR3 (ProcessorState->SpecialRegisters.Gdtr.Base, NULL, ProcessorState->SpecialRegisters.Gdtr.Limit); // // Map page(s) for processors IDT // HalpMapCR3 (ProcessorState->SpecialRegisters.Idtr.Base, NULL, ProcessorState->SpecialRegisters.Idtr.Limit); exproc(0x0C); return MmGetPhysicalAddress (MpFreeCR3[0]).LowPart; } VOID HalpMapCR3 ( IN ULONG VirtAddress, IN PVOID PhysicalAddress, IN ULONG Length ) /*++ Routine Description: Called to build a page table entry for the passed page directory. Used to build a tiled page directory with real-mode & flat mode. Arguments: VirtAddress - Current virtual address PhysicalAddress - Optional. Physical address to be mapped to, if passed as a NULL then the physical address of the passed virtual address is assumed. Length - number of bytes to map Return Value: none. --*/ { ULONG i; PHARDWARE_PTE PTE; PVOID pPageTable; PHYSICAL_ADDRESS pPhysicalPage; enproc(0x0D); while (Length) { PTE = GetPdeAddress (VirtAddress); if (!PTE->PageFrameNumber) { pPageTable = ExAllocatePool (NonPagedPool, PAGE_SIZE); RtlZeroMemory (pPageTable, PAGE_SIZE); for (i=0; iPageFrameNumber = (pPhysicalPage.LowPart >> PAGE_SHIFT); PTE->Valid = 1; PTE->Write = 1; } pPhysicalPage.LowPart = PTE->PageFrameNumber << PAGE_SHIFT; pPhysicalPage.HighPart = 0; pPageTable = MmMapIoSpace (pPhysicalPage, PAGE_SIZE, TRUE); PTE = GetPteAddress (VirtAddress); if (!PhysicalAddress) { PhysicalAddress = (PVOID)MmGetPhysicalAddress ((PVOID)VirtAddress).LowPart; } PTE->PageFrameNumber = ((ULONG) PhysicalAddress >> PAGE_SHIFT); PTE->Valid = 1; PTE->Write = 1; MmUnmapIoSpace (pPageTable, PAGE_SIZE); PhysicalAddress = 0; VirtAddress += PAGE_SIZE; if (Length > PAGE_SIZE) { Length -= PAGE_SIZE; } else { Length = 0; } } exproc(0x0D); } VOID HalpFreeTiledCR3 ( VOID ) /*++ Routine Description: Free's any memory allocated when the tiled page directory was built. Arguments: none Return Value: none --*/ { ULONG i; enproc(0x0E); for (i=0; MpFreeCR3[i]; i++) { ExFreePool (MpFreeCR3[i]); MpFreeCR3[i] = 0; } exproc(0x0E); } VOID HalpInitOtherBuses ( VOID ) { // no other buses } NTSTATUS HalpGetMcaLog ( OUT PMCA_EXCEPTION Exception, OUT PULONG ReturnedLength ) { return STATUS_NOT_SUPPORTED; } NTSTATUS HalpMcaRegisterDriver( IN PMCA_DRIVER_INFO DriverInfo ) { return STATUS_NOT_SUPPORTED; } ULONG FASTCALL HalSystemVectorDispatchEntry ( IN ULONG Vector, OUT PKINTERRUPT_ROUTINE **FlatDispatch, OUT PKINTERRUPT_ROUTINE *NoConnection ) { return FALSE; }