Created
September 16, 2018 16:12
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VOID *vendor_table; | |
Status = EfiGetSystemConfigurationTable(&gEfiAcpiTableGuid,&vendor_table); | |
struct rsdp *acpi_rsdp = (struct rsdp *)vendor_table; | |
Print(L"Signature:"); | |
UINTN i; | |
for(i=0;i<6;i++){ | |
Print(L"%c",acpi_rsdp->sig[i]); | |
} | |
Print(L"\n"); | |
Print(L"XSDT Address: %08x\n",acpi_rsdp->XsdtAddress); | |
Status = gBS->AllocatePages(AllocateAddress,EfiLoaderData,1,&BootParamAddr); | |
if(EFI_ERROR(Status)){ | |
Print(L"Can not allocate boot param address\n"); | |
} | |
struct xsdt *acpi_xsdt = (struct xsdt *)acpi_rsdp->XsdtAddress; | |
struct madt *acpi_madt; | |
struct boot_param *boot_param = (struct boot_param *)BootParamAddr; | |
UINTN entries = (acpi_xsdt->h.len - sizeof(acpi_xsdt->h)) / 8; | |
for(i=0;i<entries;i++){ | |
struct sdt_header *h = (struct sdt_header *)acpi_xsdt->pointer_others[i]; | |
if(!AsciiStrnCmp(h->sig,"APIC",4)){ | |
Print(L"Signature:"); | |
UINTN j; | |
for(j=0;j<4;j++){ | |
AsciiPrint("%c",h->sig[j]); | |
} | |
Print(L"\n"); | |
Print(L"MADT Address: %p\n",h); | |
acpi_madt = (struct madt *)h; | |
boot_param->madt_addr = (UINT64)(boot_param+sizeof(struct boot_param)); | |
CopyMem((VOID *)(boot_param->madt_addr),(VOID *)h,h->len); | |
Print(L"MADR_ADDR: %x \n",boot_param->madt_addr); | |
} | |
} |
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