diff options
Diffstat (limited to 'include/efi_loader.h')
| -rw-r--r-- | include/efi_loader.h | 125 |
1 files changed, 91 insertions, 34 deletions
diff --git a/include/efi_loader.h b/include/efi_loader.h index 99619f53a9..037cc7c543 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -15,49 +15,65 @@ #include <linux/list.h> +int __efi_entry_check(void); +int __efi_exit_check(void); +const char *__efi_nesting_inc(void); +const char *__efi_nesting_dec(void); + +/* + * Enter the u-boot world from UEFI: + */ #define EFI_ENTRY(format, ...) do { \ - efi_restore_gd(); \ - debug("EFI: Entry %s(" format ")\n", __func__, ##__VA_ARGS__); \ + assert(__efi_entry_check()); \ + debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \ + __func__, ##__VA_ARGS__); \ } while(0) -#define EFI_EXIT(ret) efi_exit_func(ret); +/* + * Exit the u-boot world back to UEFI: + */ +#define EFI_EXIT(ret) ({ \ + efi_status_t _r = ret; \ + debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \ + __func__, (u32)(_r & ~EFI_ERROR_MASK)); \ + assert(__efi_exit_check()); \ + _r; \ + }) + +/* + * Callback into UEFI world from u-boot: + */ +#define EFI_CALL(exp) do { \ + debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ + assert(__efi_exit_check()); \ + exp; \ + assert(__efi_entry_check()); \ + debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \ + } while(0) extern struct efi_runtime_services efi_runtime_services; extern struct efi_system_table systab; extern const struct efi_simple_text_output_protocol efi_con_out; -extern const struct efi_simple_input_interface efi_con_in; +extern struct efi_simple_input_interface efi_con_in; extern const struct efi_console_control_protocol efi_console_control; +extern const struct efi_device_path_to_text_protocol efi_device_path_to_text; extern const efi_guid_t efi_guid_console_control; extern const efi_guid_t efi_guid_device_path; extern const efi_guid_t efi_guid_loaded_image; +extern const efi_guid_t efi_guid_device_path_to_text_protocol; extern unsigned int __efi_runtime_start, __efi_runtime_stop; extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop; /* - * While UEFI objects can have callbacks, you can also call functions on - * protocols (classes) themselves. This struct maps a protocol GUID to its - * interface (usually a struct with callback functions). - */ -struct efi_class_map { - const efi_guid_t *guid; - const void *interface; -}; - -/* * When the UEFI payload wants to open a protocol on an object to get its * interface (usually a struct with callback functions), this struct maps the - * protocol GUID to the respective protocol handler open function for that - * object protocol combination. - */ + * protocol GUID to the respective protocol interface */ struct efi_handler { const efi_guid_t *guid; - efi_status_t (EFIAPI *open)(void *handle, - efi_guid_t *protocol, void **protocol_interface, - void *agent_handle, void *controller_handle, - uint32_t attributes); + void *protocol_interface; }; /* @@ -70,15 +86,49 @@ struct efi_handler { struct efi_object { /* Every UEFI object is part of a global object list */ struct list_head link; - /* We support up to 4 "protocols" an object can be accessed through */ - struct efi_handler protocols[4]; + /* We support up to 8 "protocols" an object can be accessed through */ + struct efi_handler protocols[8]; /* The object spawner can either use this for data or as identifier */ void *handle; }; +#define EFI_PROTOCOL_OBJECT(_guid, _protocol) (struct efi_object){ \ + .protocols = {{ \ + .guid = &(_guid), \ + .protocol_interface = (void *)(_protocol), \ + }}, \ + .handle = (void *)(_protocol), \ +} + +/** + * struct efi_event + * + * @type: Type of event, see efi_create_event + * @notify_tpl: Task priority level of notifications + * @trigger_time: Period of the timer + * @trigger_next: Next time to trigger the timer + * @nofify_function: Function to call when the event is triggered + * @notify_context: Data to be passed to the notify function + * @trigger_type: Type of timer, see efi_set_timer + * @signaled: The notify function was already called + */ +struct efi_event { + uint32_t type; + UINTN notify_tpl; + void (EFIAPI *notify_function)(struct efi_event *event, void *context); + void *notify_context; + u64 trigger_next; + u64 trigger_time; + enum efi_timer_delay trigger_type; + int signaled; +}; + + /* This list contains all UEFI objects we know of */ extern struct list_head efi_obj_list; +/* Called by bootefi to make console interface available */ +int efi_console_register(void); /* Called by bootefi to make all disk storage accessible as EFI objects */ int efi_disk_register(void); /* Called by bootefi to make GOP (graphical) interface available */ @@ -91,28 +141,30 @@ void efi_smbios_register(void); /* Called by networking code to memorize the dhcp ack package */ void efi_net_set_dhcp_ack(void *pkt, int len); -/* - * Stub implementation for a protocol opener that just returns the handle as - * interface - */ -efi_status_t EFIAPI efi_return_handle(void *handle, - efi_guid_t *protocol, void **protocol_interface, - void *agent_handle, void *controller_handle, - uint32_t attributes); /* Called from places to check whether a timer expired */ void efi_timer_check(void); /* PE loader implementation */ void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info); /* Called once to store the pristine gd pointer */ void efi_save_gd(void); -/* Called from EFI_ENTRY on callback entry to put gd into the gd register */ +/* Special case handler for error/abort that just tries to dtrt to get + * back to u-boot world */ void efi_restore_gd(void); -/* Called from EFI_EXIT on callback exit to restore the gd register */ -efi_status_t efi_exit_func(efi_status_t ret); /* Call this to relocate the runtime section to an address space */ void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map); /* Call this to set the current device name */ void efi_set_bootdev(const char *dev, const char *devnr, const char *path); +/* Call this to create an event */ +efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl, + void (EFIAPI *notify_function) ( + struct efi_event *event, + void *context), + void *notify_context, struct efi_event **event); +/* Call this to set a timer */ +efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, + uint64_t trigger_time); +/* Call this to signal an event */ +void efi_signal_event(struct efi_event *event); /* Generic EFI memory allocator, call this to get memory */ void *efi_alloc(uint64_t len, int memory_type); @@ -152,6 +204,11 @@ static inline void ascii2unicode(u16 *unicode, const char *ascii) *(unicode++) = *(ascii++); } +static inline int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) +{ + return memcmp(g1, g2, sizeof(efi_guid_t)); +} + /* * Use these to indicate that your code / data should go into the EFI runtime * section and thus still be available when the OS is running |