3  * EFI capsule support.
34  * efi_capsule_pending - has a capsule been passed to the firmware?
35  * @reset_type: store the type of EFI reset if capsule is pending
37  * To ensure that the registered capsule is processed correctly by the
38  * firmware we need to perform a specific type of reset. If a capsule is
63  * Whitelist of EFI capsule flags that we support.
74  * efi_capsule_supported - does the firmware support the capsule?
75  * @guid: vendor guid of capsule
76  * @flags: capsule flags
77  * @size: size of capsule data
78  * @reset: the reset type required for this capsule
80  * Check whether a capsule with @flags is supported by the firmware
81  * and that @size doesn't exceed the maximum size for a capsule.
88 	efi_capsule_header_t capsule;  in efi_capsule_supported()  local
89 	efi_capsule_header_t *cap_list[] = { &capsule };  in efi_capsule_supported()
96 	capsule.headersize = capsule.imagesize = sizeof(capsule);  in efi_capsule_supported()
97 	memcpy(&capsule.guid, &guid, sizeof(efi_guid_t));  in efi_capsule_supported()
98 	capsule.flags = flags;  in efi_capsule_supported()
128  * efi_capsule_update_locked - pass a single capsule to the firmware
129  * @capsule: capsule to send to the firmware
131  * @reset: the reset type required for @capsule
135  * set it and capsule_pending if a capsule was successfully sent to
143 efi_capsule_update_locked(efi_capsule_header_t *capsule,  in efi_capsule_update_locked()  argument
152 	 * If someone has already registered a capsule that requires a  in efi_capsule_update_locked()
156 		pr_err("Conflicting capsule reset type %d (%d).\n",  in efi_capsule_update_locked()
168 		pr_warn("Capsule update raced with reboot, aborting.\n");  in efi_capsule_update_locked()
174 	status = efi.update_capsule(&capsule, 1, sglist_phys);  in efi_capsule_update_locked()
184  * efi_capsule_update - send a capsule to the firmware
185  * @capsule: capsule to send to firmware
186  * @pages: an array of capsule data pages
188  * Build a scatter gather list with EFI capsule block descriptors to
189  * map the capsule described by @capsule with its data in @pages and
192  * @capsule must be a virtual mapping of the complete capsule update in the
193  * kernel address space, as the capsule can be consumed immediately.
194  * A capsule_header_t that describes the entire contents of the capsule
198  * the capsule guid, users will likely want to check that
202  * If the capsule is successfully submitted to the firmware, any
209  * pending capsule that has a reset type that conflicts with the one
210  * required by @capsule. Do NOT use efi_capsule_pending() to detect
211  * this conflict since that would be racy. Instead, submit the capsule
216 int efi_capsule_update(efi_capsule_header_t *capsule, phys_addr_t *pages)  in efi_capsule_update()  argument
218 	u32 imagesize = capsule->imagesize;  in efi_capsule_update()
219 	efi_guid_t guid = capsule->guid;  in efi_capsule_update()
221 	u32 flags = capsule->flags;  in efi_capsule_update()
284 	rv = efi_capsule_update_locked(capsule, sg_pages, reset_type);  in efi_capsule_update()