perikiyoxd/exectos
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Make a use of ACPI module

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This commit is contained in:
Rafal Kupiec
2024-02-02 23:36:51 +01:00
parent 360ddd5405
commit f25a233d12
1 changed files with 16 additions and 16 deletions
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32
xtldr/modules/xtos_o/xtos.c
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@@ -11,7 +11,7 @@
/* XTOS module information */
XTBL_MODINFO = L"XTOS boot protocol support";
XTBL_MODDEPS = {L"framebuf", L"pecoff"};
XTBL_MODDEPS = {L"acpi", L"framebuf", L"pecoff"};
/* EFI XT Loader Protocol */
PXTBL_LOADER_PROTOCOL XtLdrProtocol;
@@ -352,27 +352,27 @@ XTCDECL
EFI_STATUS
XtpInitializeApicBase(IN PXTBL_PAGE_MAPPING PageMap)
{
PCPUID_REGISTERS CpuRegisters = NULL;
EFI_GUID AcpiGuid = XT_ACPI_PROTOCOL_GUID;
PXTBL_ACPI_PROTOCOL AcpiProtocol;
EFI_HANDLE ProtocolHandle;
PVOID ApicBaseAddress;
EFI_STATUS Status;
/* Get CPU features list */
CpuRegisters->Leaf = CPUID_GET_CPU_FEATURES;
CpuRegisters->SubLeaf = 0;
CpuRegisters->Eax = 0;
CpuRegisters->Ebx = 0;
CpuRegisters->Ecx = 0;
CpuRegisters->Edx = 0;
ArCpuId(CpuRegisters);
/* Check if APIC is present */
if((CpuRegisters->Edx & CPUID_FEATURES_EDX_APIC) == 0)
/* Open ACPI protocol */
Status = XtLdrProtocol->Protocol.Open(&ProtocolHandle, (PVOID*)&AcpiProtocol, &AcpiGuid);
if(Status != STATUS_EFI_SUCCESS)
{
/* APIC is not supported by the CPU */
return STATUS_EFI_UNSUPPORTED;
/* ACPI protocol not found */
return Status;
}
/* Get APIC base address */
ApicBaseAddress = (PVOID)((UINT_PTR)ArReadModelSpecificRegister(0x1B) & 0xFFFFF000);
Status = AcpiProtocol->GetApicBase(&ApicBaseAddress);
if(Status != STATUS_EFI_SUCCESS)
{
/* Failed to get APIC base address */
return Status;
}
/* Map APIC base address */
XtLdrProtocol->Memory.MapVirtualMemory(PageMap, (PVOID)APIC_BASE, ApicBaseAddress, 1, LoaderFirmwarePermanent);