diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/efistub.h')
| -rw-r--r-- | drivers/firmware/efi/libstub/efistub.h | 853 |
1 files changed, 853 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h new file mode 100644 index 000000000..c5e0c6e99 --- /dev/null +++ b/drivers/firmware/efi/libstub/efistub.h @@ -0,0 +1,853 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H +#define _DRIVERS_FIRMWARE_EFI_EFISTUB_H + +#include <linux/compiler.h> +#include <linux/efi.h> +#include <linux/kernel.h> +#include <linux/kern_levels.h> +#include <linux/types.h> +#include <asm/efi.h> + +/* + * __init annotations should not be used in the EFI stub, since the code is + * either included in the decompressor (x86, ARM) where they have no effect, + * or the whole stub is __init annotated at the section level (arm64), by + * renaming the sections, in which case the __init annotation will be + * redundant, and will result in section names like .init.init.text, and our + * linker script does not expect that. + */ +#undef __init + +/* + * Allow the platform to override the allocation granularity: this allows + * systems that have the capability to run with a larger page size to deal + * with the allocations for initrd and fdt more efficiently. + */ +#ifndef EFI_ALLOC_ALIGN +#define EFI_ALLOC_ALIGN EFI_PAGE_SIZE +#endif + +extern bool efi_nochunk; +extern bool efi_nokaslr; +extern bool efi_noinitrd; +extern int efi_loglevel; +extern bool efi_novamap; + +extern const efi_system_table_t *efi_system_table; + +efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, + efi_system_table_t *sys_table_arg); + +#ifndef ARCH_HAS_EFISTUB_WRAPPERS + +#define efi_is_native() (true) +#define efi_bs_call(func, ...) efi_system_table->boottime->func(__VA_ARGS__) +#define efi_rt_call(func, ...) efi_system_table->runtime->func(__VA_ARGS__) +#define efi_table_attr(inst, attr) (inst->attr) +#define efi_call_proto(inst, func, ...) inst->func(inst, ##__VA_ARGS__) + +#endif + +#define efi_info(fmt, ...) \ + efi_printk(KERN_INFO fmt, ##__VA_ARGS__) +#define efi_warn(fmt, ...) \ + efi_printk(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__) +#define efi_err(fmt, ...) \ + efi_printk(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__) +#define efi_debug(fmt, ...) \ + efi_printk(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__) + +#define efi_printk_once(fmt, ...) \ +({ \ + static bool __print_once; \ + bool __ret_print_once = !__print_once; \ + \ + if (!__print_once) { \ + __print_once = true; \ + efi_printk(fmt, ##__VA_ARGS__); \ + } \ + __ret_print_once; \ +}) + +#define efi_info_once(fmt, ...) \ + efi_printk_once(KERN_INFO fmt, ##__VA_ARGS__) +#define efi_warn_once(fmt, ...) \ + efi_printk_once(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__) +#define efi_err_once(fmt, ...) \ + efi_printk_once(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__) +#define efi_debug_once(fmt, ...) \ + efi_printk_once(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__) + +/* Helper macros for the usual case of using simple C variables: */ +#ifndef fdt_setprop_inplace_var +#define fdt_setprop_inplace_var(fdt, node_offset, name, var) \ + fdt_setprop_inplace((fdt), (node_offset), (name), &(var), sizeof(var)) +#endif + +#ifndef fdt_setprop_var +#define fdt_setprop_var(fdt, node_offset, name, var) \ + fdt_setprop((fdt), (node_offset), (name), &(var), sizeof(var)) +#endif + +#define get_efi_var(name, vendor, ...) \ + efi_rt_call(get_variable, (efi_char16_t *)(name), \ + (efi_guid_t *)(vendor), __VA_ARGS__) + +#define set_efi_var(name, vendor, ...) \ + efi_rt_call(set_variable, (efi_char16_t *)(name), \ + (efi_guid_t *)(vendor), __VA_ARGS__) + +#define efi_get_handle_at(array, idx) \ + (efi_is_native() ? (array)[idx] \ + : (efi_handle_t)(unsigned long)((u32 *)(array))[idx]) + +#define efi_get_handle_num(size) \ + ((size) / (efi_is_native() ? sizeof(efi_handle_t) : sizeof(u32))) + +#define for_each_efi_handle(handle, array, size, i) \ + for (i = 0; \ + i < efi_get_handle_num(size) && \ + ((handle = efi_get_handle_at((array), i)) || true); \ + i++) + +static inline +void efi_set_u64_split(u64 data, u32 *lo, u32 *hi) +{ + *lo = lower_32_bits(data); + *hi = upper_32_bits(data); +} + +/* + * Allocation types for calls to boottime->allocate_pages. + */ +#define EFI_ALLOCATE_ANY_PAGES 0 +#define EFI_ALLOCATE_MAX_ADDRESS 1 +#define EFI_ALLOCATE_ADDRESS 2 +#define EFI_MAX_ALLOCATE_TYPE 3 + +/* + * The type of search to perform when calling boottime->locate_handle + */ +#define EFI_LOCATE_ALL_HANDLES 0 +#define EFI_LOCATE_BY_REGISTER_NOTIFY 1 +#define EFI_LOCATE_BY_PROTOCOL 2 + +/* + * boottime->stall takes the time period in microseconds + */ +#define EFI_USEC_PER_SEC 1000000 + +/* + * boottime->set_timer takes the time in 100ns units + */ +#define EFI_100NSEC_PER_USEC ((u64)10) + +/* + * An efi_boot_memmap is used by efi_get_memory_map() to return the + * EFI memory map in a dynamically allocated buffer. + * + * The buffer allocated for the EFI memory map includes extra room for + * a minimum of EFI_MMAP_NR_SLACK_SLOTS additional EFI memory descriptors. + * This facilitates the reuse of the EFI memory map buffer when a second + * call to ExitBootServices() is needed because of intervening changes to + * the EFI memory map. Other related structures, e.g. x86 e820ext, need + * to factor in this headroom requirement as well. + */ +#define EFI_MMAP_NR_SLACK_SLOTS 8 + +struct efi_boot_memmap { + efi_memory_desc_t **map; + unsigned long *map_size; + unsigned long *desc_size; + u32 *desc_ver; + unsigned long *key_ptr; + unsigned long *buff_size; +}; + +typedef struct efi_generic_dev_path efi_device_path_protocol_t; + +typedef void *efi_event_t; +/* Note that notifications won't work in mixed mode */ +typedef void (__efiapi *efi_event_notify_t)(efi_event_t, void *); + +#define EFI_EVT_TIMER 0x80000000U +#define EFI_EVT_RUNTIME 0x40000000U +#define EFI_EVT_NOTIFY_WAIT 0x00000100U +#define EFI_EVT_NOTIFY_SIGNAL 0x00000200U + +/** + * efi_set_event_at() - add event to events array + * + * @events: array of UEFI events + * @ids: index where to put the event in the array + * @event: event to add to the aray + * + * boottime->wait_for_event() takes an array of events as input. + * Provide a helper to set it up correctly for mixed mode. + */ +static inline +void efi_set_event_at(efi_event_t *events, size_t idx, efi_event_t event) +{ + if (efi_is_native()) + events[idx] = event; + else + ((u32 *)events)[idx] = (u32)(unsigned long)event; +} + +#define EFI_TPL_APPLICATION 4 +#define EFI_TPL_CALLBACK 8 +#define EFI_TPL_NOTIFY 16 +#define EFI_TPL_HIGH_LEVEL 31 + +typedef enum { + EfiTimerCancel, + EfiTimerPeriodic, + EfiTimerRelative +} EFI_TIMER_DELAY; + +/* + * EFI Boot Services table + */ +union efi_boot_services { + struct { + efi_table_hdr_t hdr; + void *raise_tpl; + void *restore_tpl; + efi_status_t (__efiapi *allocate_pages)(int, int, unsigned long, + efi_physical_addr_t *); + efi_status_t (__efiapi *free_pages)(efi_physical_addr_t, + unsigned long); + efi_status_t (__efiapi *get_memory_map)(unsigned long *, void *, + unsigned long *, + unsigned long *, u32 *); + efi_status_t (__efiapi *allocate_pool)(int, unsigned long, + void **); + efi_status_t (__efiapi *free_pool)(void *); + efi_status_t (__efiapi *create_event)(u32, unsigned long, + efi_event_notify_t, void *, + efi_event_t *); + efi_status_t (__efiapi *set_timer)(efi_event_t, + EFI_TIMER_DELAY, u64); + efi_status_t (__efiapi *wait_for_event)(unsigned long, + efi_event_t *, + unsigned long *); + void *signal_event; + efi_status_t (__efiapi *close_event)(efi_event_t); + void *check_event; + void *install_protocol_interface; + void *reinstall_protocol_interface; + void *uninstall_protocol_interface; + efi_status_t (__efiapi *handle_protocol)(efi_handle_t, + efi_guid_t *, void **); + void *__reserved; + void *register_protocol_notify; + efi_status_t (__efiapi *locate_handle)(int, efi_guid_t *, + void *, unsigned long *, + efi_handle_t *); + efi_status_t (__efiapi *locate_device_path)(efi_guid_t *, + efi_device_path_protocol_t **, + efi_handle_t *); + efi_status_t (__efiapi *install_configuration_table)(efi_guid_t *, + void *); + void *load_image; + void *start_image; + efi_status_t __noreturn (__efiapi *exit)(efi_handle_t, + efi_status_t, + unsigned long, + efi_char16_t *); + void *unload_image; + efi_status_t (__efiapi *exit_boot_services)(efi_handle_t, + unsigned long); + void *get_next_monotonic_count; + efi_status_t (__efiapi *stall)(unsigned long); + void *set_watchdog_timer; + void *connect_controller; + efi_status_t (__efiapi *disconnect_controller)(efi_handle_t, + efi_handle_t, + efi_handle_t); + void *open_protocol; + void *close_protocol; + void *open_protocol_information; + void *protocols_per_handle; + void *locate_handle_buffer; + efi_status_t (__efiapi *locate_protocol)(efi_guid_t *, void *, + void **); + void *install_multiple_protocol_interfaces; + void *uninstall_multiple_protocol_interfaces; + void *calculate_crc32; + void *copy_mem; + void *set_mem; + void *create_event_ex; + }; + struct { + efi_table_hdr_t hdr; + u32 raise_tpl; + u32 restore_tpl; + u32 allocate_pages; + u32 free_pages; + u32 get_memory_map; + u32 allocate_pool; + u32 free_pool; + u32 create_event; + u32 set_timer; + u32 wait_for_event; + u32 signal_event; + u32 close_event; + u32 check_event; + u32 install_protocol_interface; + u32 reinstall_protocol_interface; + u32 uninstall_protocol_interface; + u32 handle_protocol; + u32 __reserved; + u32 register_protocol_notify; + u32 locate_handle; + u32 locate_device_path; + u32 install_configuration_table; + u32 load_image; + u32 start_image; + u32 exit; + u32 unload_image; + u32 exit_boot_services; + u32 get_next_monotonic_count; + u32 stall; + u32 set_watchdog_timer; + u32 connect_controller; + u32 disconnect_controller; + u32 open_protocol; + u32 close_protocol; + u32 open_protocol_information; + u32 protocols_per_handle; + u32 locate_handle_buffer; + u32 locate_protocol; + u32 install_multiple_protocol_interfaces; + u32 uninstall_multiple_protocol_interfaces; + u32 calculate_crc32; + u32 copy_mem; + u32 set_mem; + u32 create_event_ex; + } mixed_mode; +}; + +typedef union efi_uga_draw_protocol efi_uga_draw_protocol_t; + +union efi_uga_draw_protocol { + struct { + efi_status_t (__efiapi *get_mode)(efi_uga_draw_protocol_t *, + u32*, u32*, u32*, u32*); + void *set_mode; + void *blt; + }; + struct { + u32 get_mode; + u32 set_mode; + u32 blt; + } mixed_mode; +}; + +typedef struct { + u16 scan_code; + efi_char16_t unicode_char; +} efi_input_key_t; + +union efi_simple_text_input_protocol { + struct { + void *reset; + efi_status_t (__efiapi *read_keystroke)(efi_simple_text_input_protocol_t *, + efi_input_key_t *); + efi_event_t wait_for_key; + }; + struct { + u32 reset; + u32 read_keystroke; + u32 wait_for_key; + } mixed_mode; +}; + +efi_status_t efi_wait_for_key(unsigned long usec, efi_input_key_t *key); + +union efi_simple_text_output_protocol { + struct { + void *reset; + efi_status_t (__efiapi *output_string)(efi_simple_text_output_protocol_t *, + efi_char16_t *); + void *test_string; + }; + struct { + u32 reset; + u32 output_string; + u32 test_string; + } mixed_mode; +}; + +#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 +#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 +#define PIXEL_BIT_MASK 2 +#define PIXEL_BLT_ONLY 3 +#define PIXEL_FORMAT_MAX 4 + +typedef struct { + u32 red_mask; + u32 green_mask; + u32 blue_mask; + u32 reserved_mask; +} efi_pixel_bitmask_t; + +typedef struct { + u32 version; + u32 horizontal_resolution; + u32 vertical_resolution; + int pixel_format; + efi_pixel_bitmask_t pixel_information; + u32 pixels_per_scan_line; +} efi_graphics_output_mode_info_t; + +typedef union efi_graphics_output_protocol_mode efi_graphics_output_protocol_mode_t; + +union efi_graphics_output_protocol_mode { + struct { + u32 max_mode; + u32 mode; + efi_graphics_output_mode_info_t *info; + unsigned long size_of_info; + efi_physical_addr_t frame_buffer_base; + unsigned long frame_buffer_size; + }; + struct { + u32 max_mode; + u32 mode; + u32 info; + u32 size_of_info; + u64 frame_buffer_base; + u32 frame_buffer_size; + } mixed_mode; +}; + +typedef union efi_graphics_output_protocol efi_graphics_output_protocol_t; + +union efi_graphics_output_protocol { + struct { + efi_status_t (__efiapi *query_mode)(efi_graphics_output_protocol_t *, + u32, unsigned long *, + efi_graphics_output_mode_info_t **); + efi_status_t (__efiapi *set_mode) (efi_graphics_output_protocol_t *, u32); + void *blt; + efi_graphics_output_protocol_mode_t *mode; + }; + struct { + u32 query_mode; + u32 set_mode; + u32 blt; + u32 mode; + } mixed_mode; +}; + +typedef union { + struct { + u32 revision; + efi_handle_t parent_handle; + efi_system_table_t *system_table; + efi_handle_t device_handle; + void *file_path; + void *reserved; + u32 load_options_size; + void *load_options; + void *image_base; + __aligned_u64 image_size; + unsigned int image_code_type; + unsigned int image_data_type; + efi_status_t (__efiapi *unload)(efi_handle_t image_handle); + }; + struct { + u32 revision; + u32 parent_handle; + u32 system_table; + u32 device_handle; + u32 file_path; + u32 reserved; + u32 load_options_size; + u32 load_options; + u32 image_base; + __aligned_u64 image_size; + u32 image_code_type; + u32 image_data_type; + u32 unload; + } mixed_mode; +} efi_loaded_image_t; + +typedef struct { + u64 size; + u64 file_size; + u64 phys_size; + efi_time_t create_time; + efi_time_t last_access_time; + efi_time_t modification_time; + __aligned_u64 attribute; + efi_char16_t filename[]; +} efi_file_info_t; + +typedef struct efi_file_protocol efi_file_protocol_t; + +struct efi_file_protocol { + u64 revision; + efi_status_t (__efiapi *open) (efi_file_protocol_t *, + efi_file_protocol_t **, + efi_char16_t *, u64, u64); + efi_status_t (__efiapi *close) (efi_file_protocol_t *); + efi_status_t (__efiapi *delete) (efi_file_protocol_t *); + efi_status_t (__efiapi *read) (efi_file_protocol_t *, + unsigned long *, void *); + efi_status_t (__efiapi *write) (efi_file_protocol_t *, + unsigned long, void *); + efi_status_t (__efiapi *get_position)(efi_file_protocol_t *, u64 *); + efi_status_t (__efiapi *set_position)(efi_file_protocol_t *, u64); + efi_status_t (__efiapi *get_info) (efi_file_protocol_t *, + efi_guid_t *, unsigned long *, + void *); + efi_status_t (__efiapi *set_info) (efi_file_protocol_t *, + efi_guid_t *, unsigned long, + void *); + efi_status_t (__efiapi *flush) (efi_file_protocol_t *); +}; + +typedef struct efi_simple_file_system_protocol efi_simple_file_system_protocol_t; + +struct efi_simple_file_system_protocol { + u64 revision; + int (__efiapi *open_volume)(efi_simple_file_system_protocol_t *, + efi_file_protocol_t **); +}; + +#define EFI_FILE_MODE_READ 0x0000000000000001 +#define EFI_FILE_MODE_WRITE 0x0000000000000002 +#define EFI_FILE_MODE_CREATE 0x8000000000000000 + +typedef enum { + EfiPciIoWidthUint8, + EfiPciIoWidthUint16, + EfiPciIoWidthUint32, + EfiPciIoWidthUint64, + EfiPciIoWidthFifoUint8, + EfiPciIoWidthFifoUint16, + EfiPciIoWidthFifoUint32, + EfiPciIoWidthFifoUint64, + EfiPciIoWidthFillUint8, + EfiPciIoWidthFillUint16, + EfiPciIoWidthFillUint32, + EfiPciIoWidthFillUint64, + EfiPciIoWidthMaximum +} EFI_PCI_IO_PROTOCOL_WIDTH; + +typedef enum { + EfiPciIoAttributeOperationGet, + EfiPciIoAttributeOperationSet, + EfiPciIoAttributeOperationEnable, + EfiPciIoAttributeOperationDisable, + EfiPciIoAttributeOperationSupported, + EfiPciIoAttributeOperationMaximum +} EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; + +typedef struct { + u32 read; + u32 write; +} efi_pci_io_protocol_access_32_t; + +typedef union efi_pci_io_protocol efi_pci_io_protocol_t; + +typedef +efi_status_t (__efiapi *efi_pci_io_protocol_cfg_t)(efi_pci_io_protocol_t *, + EFI_PCI_IO_PROTOCOL_WIDTH, + u32 offset, + unsigned long count, + void *buffer); + +typedef struct { + void *read; + void *write; +} efi_pci_io_protocol_access_t; + +typedef struct { + efi_pci_io_protocol_cfg_t read; + efi_pci_io_protocol_cfg_t write; +} efi_pci_io_protocol_config_access_t; + +union efi_pci_io_protocol { + struct { + void *poll_mem; + void *poll_io; + efi_pci_io_protocol_access_t mem; + efi_pci_io_protocol_access_t io; + efi_pci_io_protocol_config_access_t pci; + void *copy_mem; + void *map; + void *unmap; + void *allocate_buffer; + void *free_buffer; + void *flush; + efi_status_t (__efiapi *get_location)(efi_pci_io_protocol_t *, + unsigned long *segment_nr, + unsigned long *bus_nr, + unsigned long *device_nr, + unsigned long *func_nr); + void *attributes; + void *get_bar_attributes; + void *set_bar_attributes; + uint64_t romsize; + void *romimage; + }; + struct { + u32 poll_mem; + u32 poll_io; + efi_pci_io_protocol_access_32_t mem; + efi_pci_io_protocol_access_32_t io; + efi_pci_io_protocol_access_32_t pci; + u32 copy_mem; + u32 map; + u32 unmap; + u32 allocate_buffer; + u32 free_buffer; + u32 flush; + u32 get_location; + u32 attributes; + u32 get_bar_attributes; + u32 set_bar_attributes; + u64 romsize; + u32 romimage; + } mixed_mode; +}; + +#define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 +#define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 +#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 +#define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 +#define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 +#define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 +#define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 +#define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 +#define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 +#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 +#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 +#define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 +#define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 +#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 +#define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 + +struct efi_dev_path; + +typedef union apple_properties_protocol apple_properties_protocol_t; + +union apple_properties_protocol { + struct { + unsigned long version; + efi_status_t (__efiapi *get)(apple_properties_protocol_t *, + struct efi_dev_path *, + efi_char16_t *, void *, u32 *); + efi_status_t (__efiapi *set)(apple_properties_protocol_t *, + struct efi_dev_path *, + efi_char16_t *, void *, u32); + efi_status_t (__efiapi *del)(apple_properties_protocol_t *, + struct efi_dev_path *, + efi_char16_t *); + efi_status_t (__efiapi *get_all)(apple_properties_protocol_t *, + void *buffer, u32 *); + }; + struct { + u32 version; + u32 get; + u32 set; + u32 del; + u32 get_all; + } mixed_mode; +}; + +typedef u32 efi_tcg2_event_log_format; + +typedef union efi_tcg2_protocol efi_tcg2_protocol_t; + +union efi_tcg2_protocol { + struct { + void *get_capability; + efi_status_t (__efiapi *get_event_log)(efi_handle_t, + efi_tcg2_event_log_format, + efi_physical_addr_t *, + efi_physical_addr_t *, + efi_bool_t *); + void *hash_log_extend_event; + void *submit_command; + void *get_active_pcr_banks; + void *set_active_pcr_banks; + void *get_result_of_set_active_pcr_banks; + }; + struct { + u32 get_capability; + u32 get_event_log; + u32 hash_log_extend_event; + u32 submit_command; + u32 get_active_pcr_banks; + u32 set_active_pcr_banks; + u32 get_result_of_set_active_pcr_banks; + } mixed_mode; +}; + +typedef union efi_load_file_protocol efi_load_file_protocol_t; +typedef union efi_load_file_protocol efi_load_file2_protocol_t; + +union efi_load_file_protocol { + struct { + efi_status_t (__efiapi *load_file)(efi_load_file_protocol_t *, + efi_device_path_protocol_t *, + bool, unsigned long *, void *); + }; + struct { + u32 load_file; + } mixed_mode; +}; + +typedef struct { + u32 attributes; + u16 file_path_list_length; + u8 variable_data[]; + // efi_char16_t description[]; + // efi_device_path_protocol_t file_path_list[]; + // u8 optional_data[]; +} __packed efi_load_option_t; + +#define EFI_LOAD_OPTION_ACTIVE 0x0001U +#define EFI_LOAD_OPTION_FORCE_RECONNECT 0x0002U +#define EFI_LOAD_OPTION_HIDDEN 0x0008U +#define EFI_LOAD_OPTION_CATEGORY 0x1f00U +#define EFI_LOAD_OPTION_CATEGORY_BOOT 0x0000U +#define EFI_LOAD_OPTION_CATEGORY_APP 0x0100U + +#define EFI_LOAD_OPTION_BOOT_MASK \ + (EFI_LOAD_OPTION_ACTIVE|EFI_LOAD_OPTION_HIDDEN|EFI_LOAD_OPTION_CATEGORY) +#define EFI_LOAD_OPTION_MASK (EFI_LOAD_OPTION_FORCE_RECONNECT|EFI_LOAD_OPTION_BOOT_MASK) + +typedef struct { + u32 attributes; + u16 file_path_list_length; + const efi_char16_t *description; + const efi_device_path_protocol_t *file_path_list; + size_t optional_data_size; + const void *optional_data; +} efi_load_option_unpacked_t; + +void efi_pci_disable_bridge_busmaster(void); + +typedef efi_status_t (*efi_exit_boot_map_processing)( + struct efi_boot_memmap *map, + void *priv); + +efi_status_t efi_exit_boot_services(void *handle, + struct efi_boot_memmap *map, + void *priv, + efi_exit_boot_map_processing priv_func); + +efi_status_t allocate_new_fdt_and_exit_boot(void *handle, + unsigned long *new_fdt_addr, + unsigned long max_addr, + u64 initrd_addr, u64 initrd_size, + char *cmdline_ptr, + unsigned long fdt_addr, + unsigned long fdt_size); + +void *get_fdt(unsigned long *fdt_size); + +void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size, + unsigned long desc_size, efi_memory_desc_t *runtime_map, + int *count); + +efi_status_t efi_get_random_bytes(unsigned long size, u8 *out); + +efi_status_t efi_random_alloc(unsigned long size, unsigned long align, + unsigned long *addr, unsigned long random_seed); + +efi_status_t efi_random_get_seed(void); + +efi_status_t check_platform_features(void); + +void *get_efi_config_table(efi_guid_t guid); + +/* NOTE: These functions do not print a trailing newline after the string */ +void efi_char16_puts(efi_char16_t *); +void efi_puts(const char *str); + +__printf(1, 2) int efi_printk(char const *fmt, ...); + +void efi_free(unsigned long size, unsigned long addr); + +void efi_apply_loadoptions_quirk(const void **load_options, int *load_options_size); + +char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len); + +efi_status_t efi_get_memory_map(struct efi_boot_memmap *map); + +efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr, + unsigned long max); + +efi_status_t efi_allocate_pages_aligned(unsigned long size, unsigned long *addr, + unsigned long max, unsigned long align); + +efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align, + unsigned long *addr, unsigned long min); + +efi_status_t efi_relocate_kernel(unsigned long *image_addr, + unsigned long image_size, + unsigned long alloc_size, + unsigned long preferred_addr, + unsigned long alignment, + unsigned long min_addr); + +efi_status_t efi_parse_options(char const *cmdline); + +void efi_parse_option_graphics(char *option); + +efi_status_t efi_setup_gop(struct screen_info *si, efi_guid_t *proto, + unsigned long size); + +efi_status_t handle_cmdline_files(efi_loaded_image_t *image, + const efi_char16_t *optstr, + int optstr_size, + unsigned long soft_limit, + unsigned long hard_limit, + unsigned long *load_addr, + unsigned long *load_size); + + +static inline efi_status_t efi_load_dtb(efi_loaded_image_t *image, + unsigned long *load_addr, + unsigned long *load_size) +{ + return handle_cmdline_files(image, L"dtb=", sizeof(L"dtb=") - 2, + ULONG_MAX, ULONG_MAX, load_addr, load_size); +} + +efi_status_t efi_load_initrd(efi_loaded_image_t *image, + unsigned long *load_addr, + unsigned long *load_size, + unsigned long soft_limit, + unsigned long hard_limit); +/* + * This function handles the architcture specific differences between arm and + * arm64 regarding where the kernel image must be loaded and any memory that + * must be reserved. On failure it is required to free all + * all allocations it has made. + */ +efi_status_t handle_kernel_image(unsigned long *image_addr, + unsigned long *image_size, + unsigned long *reserve_addr, + unsigned long *reserve_size, + efi_loaded_image_t *image); + +asmlinkage void __noreturn efi_enter_kernel(unsigned long entrypoint, + unsigned long fdt_addr, + unsigned long fdt_size); + +void efi_handle_post_ebs_state(void); + +#endif |