ba_acpipbase
acpi_attach_common(sc, ba->ba_acpipbase);
if (ba->ba_acpipbase != 0) {
if (acpi_scan(&handle, ba->ba_acpipbase, 16) != NULL) {
ba->ba_acpipbase = 0;
ba->ba_acpipbase = ptr - handle.va + handle.pa;
ba.ba_acpipbase = bios_efiinfo->config_acpi;
acpi_attach_common(sc, ba->ba_acpipbase);
ba->ba_acpipbase = ptr - handle.va + handle.pa;