AcpiOsGetRootPointer
if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
paddr = AcpiOsGetRootPointer();
table_pa = AcpiOsGetRootPointer();
table_pa = AcpiOsGetRootPointer();