extern bool efi_no5lvl; extern bool efi_nochunk; extern bool efi_nokaslr; extern int efi_loglevel; extern bool efi_novamap;
efi_noinitrd, efi_nosoftreserve and efi_disable_pci_dma are statically declared in drivers/firmware/efi/libstub/efi-stub-helper.c. extern const efi_system_table_t *efi_system_table;
typedef union efi_dxe_services_table efi_dxe_services_table_t; extern const efi_dxe_services_table_t *efi_dxe_table;