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![Victor Perevertkin](/assets/img/avatar_default.png)
- Change INIT_FUNCTION and INIT_SECTION to CODE_SEG("INIT") and DATA_SEG("INIT") respectively - Remove INIT_FUNCTION from function prototypes - Remove alloc_text pragma calls as they are not needed anymore
300 lines
6.4 KiB
C
300 lines
6.4 KiB
C
/*
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* PROJECT: ReactOS Hardware Abstraction Layer (HAL)
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* LICENSE: BSD - See COPYING.ARM in the top level directory
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* PURPOSE: I/O Mapping and x86 Subs
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* PROGRAMMERS: ReactOS Portable Systems Group
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*/
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/* INCLUDES *******************************************************************/
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#include <hal.h>
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS *******************************************************************/
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UCHAR HalpSerialLen;
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CHAR HalpSerialNumber[31];
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/* PRIVATE FUNCTIONS **********************************************************/
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#ifndef _MINIHAL_
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CODE_SEG("INIT")
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VOID
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NTAPI
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HalpReportSerialNumber(VOID)
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{
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NTSTATUS Status;
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UNICODE_STRING KeyString;
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HANDLE Handle;
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/* Make sure there is a serial number */
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if (!HalpSerialLen) return;
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/* Open the system key */
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RtlInitUnicodeString(&KeyString, L"\\Registry\\Machine\\Hardware\\Description\\System");
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Status = HalpOpenRegistryKey(&Handle, 0, &KeyString, KEY_ALL_ACCESS, FALSE);
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if (NT_SUCCESS(Status))
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{
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/* Add the serial number */
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RtlInitUnicodeString(&KeyString, L"Serial Number");
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ZwSetValueKey(Handle,
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&KeyString,
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0,
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REG_BINARY,
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HalpSerialNumber,
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HalpSerialLen);
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/* Close the handle */
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ZwClose(Handle);
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}
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}
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CODE_SEG("INIT")
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NTSTATUS
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NTAPI
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HalpMarkAcpiHal(VOID)
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{
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NTSTATUS Status;
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UNICODE_STRING KeyString;
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HANDLE KeyHandle;
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HANDLE Handle;
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ULONG Value = HalDisableFirmwareMapper ? 1 : 0;
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/* Open the control set key */
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RtlInitUnicodeString(&KeyString,
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L"\\REGISTRY\\MACHINE\\SYSTEM\\CURRENTCONTROLSET");
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Status = HalpOpenRegistryKey(&Handle, 0, &KeyString, KEY_ALL_ACCESS, FALSE);
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if (NT_SUCCESS(Status))
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{
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/* Open the PNP key */
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RtlInitUnicodeString(&KeyString, L"Control\\Pnp");
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Status = HalpOpenRegistryKey(&KeyHandle,
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Handle,
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&KeyString,
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KEY_ALL_ACCESS,
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TRUE);
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/* Close root key */
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ZwClose(Handle);
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/* Check if PNP BIOS key exists */
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if (NT_SUCCESS(Status))
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{
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/* Set the disable value to false -- we need the mapper */
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RtlInitUnicodeString(&KeyString, L"DisableFirmwareMapper");
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Status = ZwSetValueKey(KeyHandle,
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&KeyString,
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0,
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REG_DWORD,
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&Value,
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sizeof(Value));
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/* Close subkey */
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ZwClose(KeyHandle);
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}
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}
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/* Return status */
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return Status;
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}
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NTSTATUS
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NTAPI
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HalpOpenRegistryKey(IN PHANDLE KeyHandle,
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IN HANDLE RootKey,
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IN PUNICODE_STRING KeyName,
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IN ACCESS_MASK DesiredAccess,
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IN BOOLEAN Create)
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{
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NTSTATUS Status;
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ULONG Disposition;
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OBJECT_ATTRIBUTES ObjectAttributes;
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/* Setup the attributes we received */
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InitializeObjectAttributes(&ObjectAttributes,
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KeyName,
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OBJ_CASE_INSENSITIVE,
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RootKey,
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NULL);
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/* What to do? */
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if ( Create )
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{
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/* Create the key */
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Status = ZwCreateKey(KeyHandle,
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DesiredAccess,
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&ObjectAttributes,
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0,
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NULL,
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REG_OPTION_VOLATILE,
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&Disposition);
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}
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else
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{
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/* Open the key */
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Status = ZwOpenKey(KeyHandle, DesiredAccess, &ObjectAttributes);
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}
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/* We're done */
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return Status;
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}
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#endif /* !_MINIHAL_ */
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VOID
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NTAPI
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HalpCheckPowerButton(VOID)
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{
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//
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// Nothing to do on non-ACPI
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//
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return;
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}
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VOID
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NTAPI
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HalpFlushTLB(VOID)
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{
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ULONG_PTR Flags, Cr4;
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INT CpuInfo[4];
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ULONG_PTR PageDirectory;
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//
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// Disable interrupts
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//
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Flags = __readeflags();
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_disable();
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//
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// Get page table directory base
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//
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PageDirectory = __readcr3();
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//
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// Check for CPUID support
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//
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if (KeGetCurrentPrcb()->CpuID)
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{
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//
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// Check for global bit in CPU features
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//
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__cpuid(CpuInfo, 1);
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if (CpuInfo[3] & 0x2000)
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{
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//
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// Get current CR4 value
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//
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Cr4 = __readcr4();
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//
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// Disable global bit
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//
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__writecr4(Cr4 & ~CR4_PGE);
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//
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// Flush TLB and re-enable global bit
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//
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__writecr3(PageDirectory);
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__writecr4(Cr4);
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//
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// Restore interrupts
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//
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__writeeflags(Flags);
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return;
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}
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}
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//
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// Legacy: just flush TLB
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//
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__writecr3(PageDirectory);
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__writeeflags(Flags);
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}
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/* FUNCTIONS *****************************************************************/
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/*
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* @implemented
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*/
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UCHAR
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FASTCALL
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HalSystemVectorDispatchEntry(IN ULONG Vector,
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OUT PKINTERRUPT_ROUTINE **FlatDispatch,
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OUT PKINTERRUPT_ROUTINE *NoConnection)
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{
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//
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// Not implemented on x86
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//
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return 0;
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}
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KeFlushWriteBuffer(VOID)
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{
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//
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// Not implemented on x86
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//
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return;
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}
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#ifdef _M_IX86
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/* x86 fastcall wrappers */
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#undef KeRaiseIrql
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KeRaiseIrql(KIRQL NewIrql,
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PKIRQL OldIrql)
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{
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/* Call the fastcall function */
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*OldIrql = KfRaiseIrql(NewIrql);
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}
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#undef KeLowerIrql
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KeLowerIrql(KIRQL NewIrql)
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{
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/* Call the fastcall function */
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KfLowerIrql(NewIrql);
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}
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#undef KeAcquireSpinLock
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KeAcquireSpinLock(PKSPIN_LOCK SpinLock,
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PKIRQL OldIrql)
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{
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/* Call the fastcall function */
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*OldIrql = KfAcquireSpinLock(SpinLock);
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}
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#undef KeReleaseSpinLock
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/*
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* @implemented
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*/
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VOID
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NTAPI
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KeReleaseSpinLock(PKSPIN_LOCK SpinLock,
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KIRQL NewIrql)
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{
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/* Call the fastcall function */
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KfReleaseSpinLock(SpinLock, NewIrql);
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}
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#endif /* _M_IX86 */
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