From 64a8aae15ce9cccdb907219a9fce9f5b17ae791a Mon Sep 17 00:00:00 2001 From: Jose Marinho Date: Tue, 2 Mar 2021 17:26:38 +0000 Subject: efi: Add ESRT to the EFI system table The ESRT is initialised during efi_init_objlist after efi_initialize_system_table(). The ESRT is recreated from scratch at the following events: - successful UpdateCapsule; - FMP instance install. The code ensures that every ESRT entry has a unique fw_class value. Limitations: - The ESRT is not updated if an FMP instance is uninstalled; - the fields image_type and flags are in the current implementation left undefined. Setting these values will require a per-platform function that returns the image_type/flags as a function of the image fw_class. CC: Heinrich Schuchardt CC: Sughosh Ganu CC: AKASHI Takahiro CC: Ilias Apalodimas CC: Andre Przywara CC: Alexander Graf CC: nd@arm.com Signed-off-by: Jose Marinho Remove two EFI_CALL() indirections. Move ESRT GUID in efidebug's list of GUIDs. Reviewed-by: Heinrich Schuchardt --- include/efi_loader.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'include/efi_loader.h') diff --git a/include/efi_loader.h b/include/efi_loader.h index 903bf60bc0a..de1a496a972 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -214,6 +214,8 @@ extern const efi_guid_t efi_guid_rng_protocol; extern const efi_guid_t efi_guid_capsule_report; /* GUID of firmware management protocol */ extern const efi_guid_t efi_guid_firmware_management_protocol; +/* GUID for the ESRT */ +extern const efi_guid_t efi_esrt_guid; extern unsigned int __efi_runtime_start, __efi_runtime_stop; extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop; @@ -559,6 +561,10 @@ struct efi_simple_file_system_protocol *efi_simple_file_system( /* open file from device-path: */ struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp); +/* Registers a callback function for a notification event. */ +efi_status_t EFIAPI efi_register_protocol_notify(const efi_guid_t *protocol, + struct efi_event *event, + void **registration); efi_status_t efi_file_size(struct efi_file_handle *fh, efi_uintn_t *size); /* get a device path from a Boot#### option */ @@ -902,4 +908,22 @@ static inline efi_status_t efi_launch_capsules(void) #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */ +/** + * Install the ESRT system table. + * + * @return status code + */ +efi_status_t efi_esrt_register(void); + +/** + * efi_esrt_populate() - Populates the ESRT entries from the FMP instances + * present in the system. + * If an ESRT already exists, the old ESRT is replaced in the system table. + * The memory of the old ESRT is deallocated. + * + * Return: + * - EFI_SUCCESS if the ESRT is correctly created + * - error code otherwise. + */ +efi_status_t efi_esrt_populate(void); #endif /* _EFI_LOADER_H */ -- cgit