+// SPDX-License-Identifier: GPL-2.0+
/*
* EFI application boot time services
*
* Copyright (c) 2016 Alexander Graf
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <efi_loader.h>
#include <environment.h>
#include <malloc.h>
-#include <asm/global_data.h>
#include <linux/libfdt_env.h>
#include <u-boot/crc.h>
#include <bootm.h>
LIST_HEAD(efi_obj_list);
/* List of all events */
-static LIST_HEAD(efi_events);
+LIST_HEAD(efi_events);
/*
* If we're running on nasty systems (32bit ARM booting into non-EFI Linux)
* In most cases we want to pass an FDT to the payload, so reserve one slot of
* config table space for it. The pointer gets populated by do_bootefi_exec().
*/
-static struct efi_configuration_table __efi_runtime_data efi_conf_table[2];
+static struct efi_configuration_table __efi_runtime_data efi_conf_table[16];
#ifdef CONFIG_ARM
/*
const efi_guid_t efi_guid_driver_binding_protocol =
EFI_DRIVER_BINDING_PROTOCOL_GUID;
+/* event group ExitBootServices() invoked */
+const efi_guid_t efi_guid_event_group_exit_boot_services =
+ EFI_EVENT_GROUP_EXIT_BOOT_SERVICES;
+/* event group SetVirtualAddressMap() invoked */
+const efi_guid_t efi_guid_event_group_virtual_address_change =
+ EFI_EVENT_GROUP_VIRTUAL_ADDRESS_CHANGE;
+/* event group memory map changed */
+const efi_guid_t efi_guid_event_group_memory_map_change =
+ EFI_EVENT_GROUP_MEMORY_MAP_CHANGE;
+/* event group boot manager about to boot */
+const efi_guid_t efi_guid_event_group_ready_to_boot =
+ EFI_EVENT_GROUP_READY_TO_BOOT;
+/* event group ResetSystem() invoked (before ExitBootServices) */
+const efi_guid_t efi_guid_event_group_reset_system =
+ EFI_EVENT_GROUP_RESET_SYSTEM;
+
static efi_status_t EFIAPI efi_disconnect_controller(
efi_handle_t controller_handle,
efi_handle_t driver_image_handle,
}
/*
- * Special case handler for error/abort that just forces things back
- * to u-boot world so we can dump out an abort msg, without any care
- * about returning back to UEFI world.
+ * Special case handler for error/abort that just forces things back to u-boot
+ * world so we can dump out an abort msg, without any care about returning back
+ * to UEFI world.
*/
void efi_restore_gd(void)
{
#endif
}
-/*
- * Return a string for indenting with two spaces per level. A maximum of ten
- * indent levels is supported. Higher indent levels will be truncated.
+/**
+ * indent_string() - returns a string for indenting with two spaces per level
+ * @level: indent level
*
- * @level indent level
- * @return indent string
+ * A maximum of ten indent levels is supported. Higher indent levels will be
+ * truncated.
+ *
+ * Return: A string for indenting with two spaces per level is
+ * returned.
*/
static const char *indent_string(int level)
{
return indent_string(--nesting_level);
}
-/*
- * Queue an EFI event.
+/**
+ * efi_queue_event() - queue an EFI event
+ * @event: event to signal
+ * @check_tpl: check the TPL level
*
* This function queues the notification function of the event for future
* execution.
*
- * The notification function is called if the task priority level of the
- * event is higher than the current task priority level.
+ * The notification function is called if the task priority level of the event
+ * is higher than the current task priority level.
*
* For the SignalEvent service see efi_signal_event_ext.
*
- * @event event to signal
- * @check_tpl check the TPL level
*/
-void efi_signal_event(struct efi_event *event, bool check_tpl)
+static void efi_queue_event(struct efi_event *event, bool check_tpl)
{
if (event->notify_function) {
event->is_queued = true;
event->is_queued = false;
}
-/*
- * Raise the task priority level.
+/**
+ * is_valid_tpl() - check if the task priority level is valid
+ *
+ * @tpl: TPL level to check
+ * ReturnValue: status code
+ */
+efi_status_t is_valid_tpl(efi_uintn_t tpl)
+{
+ switch (tpl) {
+ case TPL_APPLICATION:
+ case TPL_CALLBACK:
+ case TPL_NOTIFY:
+ case TPL_HIGH_LEVEL:
+ return EFI_SUCCESS;
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+}
+
+/**
+ * efi_signal_event() - signal an EFI event
+ * @event: event to signal
+ * @check_tpl: check the TPL level
+ *
+ * This function signals an event. If the event belongs to an event group all
+ * events of the group are signaled. If they are of type EVT_NOTIFY_SIGNAL
+ * their notification function is queued.
+ *
+ * For the SignalEvent service see efi_signal_event_ext.
+ */
+void efi_signal_event(struct efi_event *event, bool check_tpl)
+{
+ if (event->group) {
+ struct efi_event *evt;
+
+ /*
+ * The signaled state has to set before executing any
+ * notification function
+ */
+ list_for_each_entry(evt, &efi_events, link) {
+ if (!evt->group || guidcmp(evt->group, event->group))
+ continue;
+ if (evt->is_signaled)
+ continue;
+ evt->is_signaled = true;
+ if (evt->type & EVT_NOTIFY_SIGNAL &&
+ evt->notify_function)
+ evt->is_queued = true;
+ }
+ list_for_each_entry(evt, &efi_events, link) {
+ if (!evt->group || guidcmp(evt->group, event->group))
+ continue;
+ if (evt->is_queued)
+ efi_queue_event(evt, check_tpl);
+ }
+ } else if (!event->is_signaled) {
+ event->is_signaled = true;
+ if (event->type & EVT_NOTIFY_SIGNAL)
+ efi_queue_event(event, check_tpl);
+ }
+}
+
+/**
+ * efi_raise_tpl() - raise the task priority level
+ * @new_tpl: new value of the task priority level
*
* This function implements the RaiseTpl service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @new_tpl new value of the task priority level
- * @return old value of the task priority level
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: old value of the task priority level
*/
static unsigned long EFIAPI efi_raise_tpl(efi_uintn_t new_tpl)
{
return old_tpl;
}
-/*
- * Lower the task priority level.
+/**
+ * efi_restore_tpl() - lower the task priority level
+ * @old_tpl: value of the task priority level to be restored
*
* This function implements the RestoreTpl service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @old_tpl value of the task priority level to be restored
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
*/
static void EFIAPI efi_restore_tpl(efi_uintn_t old_tpl)
{
if (efi_tpl > TPL_HIGH_LEVEL)
efi_tpl = TPL_HIGH_LEVEL;
+ /*
+ * Lowering the TPL may have made queued events eligible for execution.
+ */
+ efi_timer_check();
+
EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Allocate memory pages.
+/**
+ * efi_allocate_pages_ext() - allocate memory pages
+ * @type: type of allocation to be performed
+ * @memory_type: usage type of the allocated memory
+ * @pages: number of pages to be allocated
+ * @memory: allocated memory
*
* This function implements the AllocatePages service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @type type of allocation to be performed
- * @memory_type usage type of the allocated memory
- * @pages number of pages to be allocated
- * @memory allocated memory
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type,
efi_uintn_t pages,
return EFI_EXIT(r);
}
-/*
- * Free memory pages.
+/**
+ * efi_free_pages_ext() - Free memory pages.
+ * @memory: start of the memory area to be freed
+ * @pages: number of pages to be freed
*
* This function implements the FreePages service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @memory start of the memory area to be freed
- * @pages number of pages to be freed
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory,
efi_uintn_t pages)
return EFI_EXIT(r);
}
-/*
- * Get map describing memory usage.
+/**
+ * efi_get_memory_map_ext() - get map describing memory usage
+ * @memory_map_size: on entry the size, in bytes, of the memory map buffer,
+ * on exit the size of the copied memory map
+ * @memory_map: buffer to which the memory map is written
+ * @map_key: key for the memory map
+ * @descriptor_size: size of an individual memory descriptor
+ * @descriptor_version: version number of the memory descriptor structure
*
* This function implements the GetMemoryMap service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @memory_map_size on entry the size, in bytes, of the memory map buffer,
- * on exit the size of the copied memory map
- * @memory_map buffer to which the memory map is written
- * @map_key key for the memory map
- * @descriptor_size size of an individual memory descriptor
- * @descriptor_version version number of the memory descriptor structure
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_get_memory_map_ext(
efi_uintn_t *memory_map_size,
return EFI_EXIT(r);
}
-/*
- * Allocate memory from pool.
+/**
+ * efi_allocate_pool_ext() - allocate memory from pool
+ * @pool_type: type of the pool from which memory is to be allocated
+ * @size: number of bytes to be allocated
+ * @buffer: allocated memory
*
* This function implements the AllocatePool service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @pool_type type of the pool from which memory is to be allocated
- * @size number of bytes to be allocated
- * @buffer allocated memory
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type,
efi_uintn_t size,
return EFI_EXIT(r);
}
-/*
- * Free memory from pool.
+/**
+ * efi_free_pool_ext() - free memory from pool
+ * @buffer: start of memory to be freed
*
* This function implements the FreePool service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @buffer start of memory to be freed
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
{
return EFI_EXIT(r);
}
-/*
- * Add a new object to the object list.
+/**
+ * efi_add_handle() - add a new object to the object list
+ * @obj: object to be added
*
- * The protocols list is initialized.
- * The object handle is set.
- *
- * @obj object to be added
+ * The protocols list is initialized. The object handle is set.
*/
void efi_add_handle(struct efi_object *obj)
{
list_add_tail(&obj->link, &efi_obj_list);
}
-/*
- * Create handle.
+/**
+ * efi_create_handle() - create handle
+ * @handle: new handle
*
- * @handle new handle
- * @return status code
+ * Return: status code
*/
efi_status_t efi_create_handle(efi_handle_t *handle)
{
struct efi_object *obj;
- efi_status_t r;
- r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
- sizeof(struct efi_object),
- (void **)&obj);
- if (r != EFI_SUCCESS)
- return r;
+ obj = calloc(1, sizeof(struct efi_object));
+ if (!obj)
+ return EFI_OUT_OF_RESOURCES;
+
efi_add_handle(obj);
*handle = obj->handle;
- return r;
+
+ return EFI_SUCCESS;
}
-/*
- * Find a protocol on a handle.
+/**
+ * efi_search_protocol() - find a protocol on a handle.
+ * @handle: handle
+ * @protocol_guid: GUID of the protocol
+ * @handler: reference to the protocol
*
- * @handle handle
- * @protocol_guid GUID of the protocol
- * @handler reference to the protocol
- * @return status code
+ * Return: status code
*/
efi_status_t efi_search_protocol(const efi_handle_t handle,
const efi_guid_t *protocol_guid,
return EFI_NOT_FOUND;
}
-/*
- * Delete protocol from a handle.
+/**
+ * efi_remove_protocol() - delete protocol from a handle
+ * @handle: handle from which the protocol shall be deleted
+ * @protocol: GUID of the protocol to be deleted
+ * @protocol_interface: interface of the protocol implementation
*
- * @handle handle from which the protocol shall be deleted
- * @protocol GUID of the protocol to be deleted
- * @protocol_interface interface of the protocol implementation
- * @return status code
+ * Return: status code
*/
efi_status_t efi_remove_protocol(const efi_handle_t handle,
const efi_guid_t *protocol,
return ret;
if (guidcmp(handler->guid, protocol))
return EFI_INVALID_PARAMETER;
+ if (handler->protocol_interface != protocol_interface)
+ return EFI_INVALID_PARAMETER;
list_del(&handler->link);
free(handler);
return EFI_SUCCESS;
}
-/*
- * Delete all protocols from a handle.
+/**
+ * efi_remove_all_protocols() - delete all protocols from a handle
+ * @handle: handle from which the protocols shall be deleted
*
- * @handle handle from which the protocols shall be deleted
- * @return status code
+ * Return: status code
*/
efi_status_t efi_remove_all_protocols(const efi_handle_t handle)
{
return EFI_SUCCESS;
}
-/*
- * Delete handle.
+/**
+ * efi_delete_handle() - delete handle
*
- * @handle handle to delete
+ * @obj: handle to delete
*/
void efi_delete_handle(struct efi_object *obj)
{
free(obj);
}
-/*
- * Check if a pointer is a valid event.
+/**
+ * efi_is_event() - check if a pointer is a valid event
+ * @event: pointer to check
*
- * @event pointer to check
- * @return status code
+ * Return: status code
*/
static efi_status_t efi_is_event(const struct efi_event *event)
{
return EFI_INVALID_PARAMETER;
}
-/*
- * Create an event.
+/**
+ * efi_create_event() - create an event
+ * @type: type of the event to create
+ * @notify_tpl: task priority level of the event
+ * @notify_function: notification function of the event
+ * @notify_context: pointer passed to the notification function
+ * @group: event group
+ * @event: created event
*
* This function is used inside U-Boot code to create an event.
*
* For the API function implementing the CreateEvent service see
* efi_create_event_ext.
*
- * @type type of the event to create
- * @notify_tpl task priority level of the event
- * @notify_function notification function of the event
- * @notify_context pointer passed to the notification function
- * @event created event
- * @return status code
+ * Return: status code
*/
efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
- void *notify_context, struct efi_event **event)
+ void *notify_context, efi_guid_t *group,
+ struct efi_event **event)
{
struct efi_event *evt;
if (event == NULL)
return EFI_INVALID_PARAMETER;
- if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
+ switch (type) {
+ case 0:
+ case EVT_TIMER:
+ case EVT_NOTIFY_SIGNAL:
+ case EVT_TIMER | EVT_NOTIFY_SIGNAL:
+ case EVT_NOTIFY_WAIT:
+ case EVT_TIMER | EVT_NOTIFY_WAIT:
+ case EVT_SIGNAL_EXIT_BOOT_SERVICES:
+ case EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE:
+ break;
+ default:
return EFI_INVALID_PARAMETER;
+ }
- if ((type & (EVT_NOTIFY_SIGNAL | EVT_NOTIFY_WAIT)) &&
- notify_function == NULL)
+ if (is_valid_tpl(notify_tpl) != EFI_SUCCESS)
return EFI_INVALID_PARAMETER;
evt = calloc(1, sizeof(struct efi_event));
evt->notify_tpl = notify_tpl;
evt->notify_function = notify_function;
evt->notify_context = notify_context;
+ evt->group = group;
/* Disable timers on bootup */
evt->trigger_next = -1ULL;
evt->is_queued = false;
}
/*
- * Create an event in a group.
+ * efi_create_event_ex() - create an event in a group
+ * @type: type of the event to create
+ * @notify_tpl: task priority level of the event
+ * @notify_function: notification function of the event
+ * @notify_context: pointer passed to the notification function
+ * @event: created event
+ * @event_group: event group
*
* This function implements the CreateEventEx service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
- * TODO: Support event groups
*
- * @type type of the event to create
- * @notify_tpl task priority level of the event
- * @notify_function notification function of the event
- * @notify_context pointer passed to the notification function
- * @event created event
- * @event_group event group
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
efi_status_t EFIAPI efi_create_event_ex(uint32_t type, efi_uintn_t notify_tpl,
void (EFIAPI *notify_function) (
{
EFI_ENTRY("%d, 0x%zx, %p, %p, %pUl", type, notify_tpl, notify_function,
notify_context, event_group);
- if (event_group)
- return EFI_EXIT(EFI_UNSUPPORTED);
return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function,
- notify_context, event));
+ notify_context, event_group, event));
}
-/*
- * Create an event.
+/**
+ * efi_create_event_ext() - create an event
+ * @type: type of the event to create
+ * @notify_tpl: task priority level of the event
+ * @notify_function: notification function of the event
+ * @notify_context: pointer passed to the notification function
+ * @event: created event
*
* This function implements the CreateEvent service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @type type of the event to create
- * @notify_tpl task priority level of the event
- * @notify_function notification function of the event
- * @notify_context pointer passed to the notification function
- * @event created event
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_create_event_ext(
uint32_t type, efi_uintn_t notify_tpl,
EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function,
notify_context);
return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function,
- notify_context, event));
+ notify_context, NULL, event));
}
-/*
+/**
+ * efi_timer_check() - check if a timer event has occurred
+ *
* Check if a timer event has occurred or a queued notification function should
* be called.
*
list_for_each_entry(evt, &efi_events, link) {
if (evt->is_queued)
- efi_signal_event(evt, true);
+ efi_queue_event(evt, true);
if (!(evt->type & EVT_TIMER) || now < evt->trigger_next)
continue;
switch (evt->trigger_type) {
default:
continue;
}
- evt->is_signaled = true;
+ evt->is_signaled = false;
efi_signal_event(evt, true);
}
WATCHDOG_RESET();
}
-/*
- * Set the trigger time for a timer event or stop the event.
+/**
+ * efi_set_timer() - set the trigger time for a timer event or stop the event
+ * @event: event for which the timer is set
+ * @type: type of the timer
+ * @trigger_time: trigger period in multiples of 100ns
*
* This is the function for internal usage in U-Boot. For the API function
* implementing the SetTimer service see efi_set_timer_ext.
*
- * @event event for which the timer is set
- * @type type of the timer
- * @trigger_time trigger period in multiples of 100ns
- * @return status code
+ * Return: status code
*/
efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
uint64_t trigger_time)
return EFI_SUCCESS;
}
-/*
- * Set the trigger time for a timer event or stop the event.
+/**
+ * efi_set_timer_ext() - Set the trigger time for a timer event or stop the
+ * event
+ * @event: event for which the timer is set
+ * @type: type of the timer
+ * @trigger_time: trigger period in multiples of 100ns
*
* This function implements the SetTimer service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @event event for which the timer is set
- * @type type of the timer
- * @trigger_time trigger period in multiples of 100ns
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event,
enum efi_timer_delay type,
return EFI_EXIT(efi_set_timer(event, type, trigger_time));
}
-/*
- * Wait for events to be signaled.
+/**
+ * efi_wait_for_event() - wait for events to be signaled
+ * @num_events: number of events to be waited for
+ * @event: events to be waited for
+ * @index: index of the event that was signaled
*
* This function implements the WaitForEvent service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @num_events number of events to be waited for
- * @events events to be waited for
- * @index index of the event that was signaled
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_wait_for_event(efi_uintn_t num_events,
struct efi_event **event,
if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL)
return EFI_EXIT(EFI_INVALID_PARAMETER);
if (!event[i]->is_signaled)
- efi_signal_event(event[i], true);
+ efi_queue_event(event[i], true);
}
/* Wait for signal */
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Signal an EFI event.
+/**
+ * efi_signal_event_ext() - signal an EFI event
+ * @event: event to signal
*
* This function implements the SignalEvent service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
*
* This functions sets the signaled state of the event and queues the
* notification function for execution.
*
- * @event event to signal
- * @return status code
+ * Return: status code
*/
static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event)
{
EFI_ENTRY("%p", event);
if (efi_is_event(event) != EFI_SUCCESS)
return EFI_EXIT(EFI_INVALID_PARAMETER);
- if (!event->is_signaled) {
- event->is_signaled = true;
- if (event->type & EVT_NOTIFY_SIGNAL)
- efi_signal_event(event, true);
- }
+ efi_signal_event(event, true);
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Close an EFI event.
+/**
+ * efi_close_event() - close an EFI event
+ * @event: event to close
*
* This function implements the CloseEvent service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @event event to close
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
{
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Check if an event is signaled.
+/**
+ * efi_check_event() - check if an event is signaled
+ * @event: event to check
*
* This function implements the CheckEvent service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * If an event is not signaled yet, the notification function is queued.
- * The signaled state is cleared.
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
*
- * @event event to check
- * @return status code
+ * If an event is not signaled yet, the notification function is queued. The
+ * signaled state is cleared.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_check_event(struct efi_event *event)
{
event->type & EVT_NOTIFY_SIGNAL)
return EFI_EXIT(EFI_INVALID_PARAMETER);
if (!event->is_signaled)
- efi_signal_event(event, true);
+ efi_queue_event(event, true);
if (event->is_signaled) {
event->is_signaled = false;
return EFI_EXIT(EFI_SUCCESS);
return EFI_EXIT(EFI_NOT_READY);
}
-/*
- * Find the internal EFI object for a handle.
+/**
+ * efi_search_obj() - find the internal EFI object for a handle
+ * @handle: handle to find
*
- * @handle handle to find
- * @return EFI object
+ * Return: EFI object
*/
struct efi_object *efi_search_obj(const efi_handle_t handle)
{
return NULL;
}
-/*
- * Create open protocol info entry and add it to a protocol.
+/**
+ * efi_open_protocol_info_entry() - create open protocol info entry and add it
+ * to a protocol
+ * @handler: handler of a protocol
*
- * @handler handler of a protocol
- * @return open protocol info entry
+ * Return: open protocol info entry
*/
static struct efi_open_protocol_info_entry *efi_create_open_info(
struct efi_handler *handler)
return &item->info;
}
-/*
- * Remove an open protocol info entry from a protocol.
+/**
+ * efi_delete_open_info() - remove an open protocol info entry from a protocol
+ * @item: open protocol info entry to delete
*
- * @handler handler of a protocol
- * @return status code
+ * Return: status code
*/
static efi_status_t efi_delete_open_info(
struct efi_open_protocol_info_item *item)
return EFI_SUCCESS;
}
-/*
- * Install new protocol on a handle.
+/**
+ * efi_add_protocol() - install new protocol on a handle
+ * @handle: handle on which the protocol shall be installed
+ * @protocol: GUID of the protocol to be installed
+ * @protocol_interface: interface of the protocol implementation
*
- * @handle handle on which the protocol shall be installed
- * @protocol GUID of the protocol to be installed
- * @protocol_interface interface of the protocol implementation
- * @return status code
+ * Return: status code
*/
efi_status_t efi_add_protocol(const efi_handle_t handle,
const efi_guid_t *protocol,
return EFI_SUCCESS;
}
-/*
- * Install protocol interface.
+/**
+ * efi_install_protocol_interface() - install protocol interface
+ * @handle: handle on which the protocol shall be installed
+ * @protocol: GUID of the protocol to be installed
+ * @protocol_interface_type: type of the interface to be installed,
+ * always EFI_NATIVE_INTERFACE
+ * @protocol_interface: interface of the protocol implementation
*
* This function implements the InstallProtocolInterface service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle on which the protocol shall be installed
- * @protocol GUID of the protocol to be installed
- * @protocol_interface_type type of the interface to be installed,
- * always EFI_NATIVE_INTERFACE
- * @protocol_interface interface of the protocol implementation
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_install_protocol_interface(
void **handle, const efi_guid_t *protocol,
return EFI_EXIT(r);
}
-/*
- * Reinstall protocol interface.
- *
- * This function implements the ReinstallProtocolInterface service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
+/**
+ * efi_get_drivers() - get all drivers associated to a controller
+ * @efiobj: handle of the controller
+ * @protocol: protocol guid (optional)
+ * @number_of_drivers: number of child controllers
+ * @driver_handle_buffer: handles of the the drivers
*
- * @handle handle on which the protocol shall be
- * reinstalled
- * @protocol GUID of the protocol to be installed
- * @old_interface interface to be removed
- * @new_interface interface to be installed
- * @return status code
- */
-static efi_status_t EFIAPI efi_reinstall_protocol_interface(
- efi_handle_t handle, const efi_guid_t *protocol,
- void *old_interface, void *new_interface)
-{
- EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface,
- new_interface);
- return EFI_EXIT(EFI_ACCESS_DENIED);
-}
-
-/*
- * Get all drivers associated to a controller.
* The allocated buffer has to be freed with free().
*
- * @efiobj handle of the controller
- * @protocol protocol guid (optional)
- * @number_of_drivers number of child controllers
- * @driver_handle_buffer handles of the the drivers
- * @return status code
+ * Return: status code
*/
static efi_status_t efi_get_drivers(struct efi_object *efiobj,
const efi_guid_t *protocol,
return EFI_SUCCESS;
}
-/*
- * Disconnect all drivers from a controller.
+/**
+ * efi_disconnect_all_drivers() - disconnect all drivers from a controller
+ * @efiobj: handle of the controller
+ * @protocol: protocol guid (optional)
+ * @child_handle: handle of the child to destroy
*
* This function implements the DisconnectController service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @efiobj handle of the controller
- * @protocol protocol guid (optional)
- * @child_handle handle of the child to destroy
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t efi_disconnect_all_drivers(
struct efi_object *efiobj,
return ret;
}
-/*
- * Uninstall protocol interface.
+/**
+ * efi_uninstall_protocol_interface() - uninstall protocol interface
+ * @handle: handle from which the protocol shall be removed
+ * @protocol: GUID of the protocol to be removed
+ * @protocol_interface: interface to be removed
*
* This function implements the UninstallProtocolInterface service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle from which the protocol shall be removed
- * @protocol GUID of the protocol to be removed
- * @protocol_interface interface to be removed
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_uninstall_protocol_interface(
efi_handle_t handle, const efi_guid_t *protocol,
return EFI_EXIT(r);
}
-/*
- * Register an event for notification when a protocol is installed.
+/**
+ * efi_register_protocol_notify() - register an event for notification when a
+ * protocol is installed.
+ * @protocol: GUID of the protocol whose installation shall be notified
+ * @event: event to be signaled upon installation of the protocol
+ * @registration: key for retrieving the registration information
*
* This function implements the RegisterProtocolNotify service.
* See the Unified Extensible Firmware Interface (UEFI) specification
* for details.
*
- * @protocol GUID of the protocol whose installation shall be
- * notified
- * @event event to be signaled upon installation of the protocol
- * @registration key for retrieving the registration information
- * @return status code
+ * Return: status code
*/
static efi_status_t EFIAPI efi_register_protocol_notify(
const efi_guid_t *protocol,
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
}
-/*
- * Determine if an EFI handle implements a protocol.
+/**
+ * efi_search() - determine if an EFI handle implements a protocol
+ * @search_type: selection criterion
+ * @protocol: GUID of the protocol
+ * @search_key: registration key
+ * @efiobj: handle
*
* See the documentation of the LocateHandle service in the UEFI specification.
*
- * @search_type selection criterion
- * @protocol GUID of the protocol
- * @search_key registration key
- * @efiobj handle
- * @return 0 if the handle implements the protocol
+ * Return: 0 if the handle implements the protocol
*/
static int efi_search(enum efi_locate_search_type search_type,
const efi_guid_t *protocol, void *search_key,
}
}
-/*
- * Locate handles implementing a protocol.
+/**
+ * efi_locate_handle() - locate handles implementing a protocol
+ * @search_type: selection criterion
+ * @protocol: GUID of the protocol
+ * @search_key: registration key
+ * @buffer_size: size of the buffer to receive the handles in bytes
+ * @buffer: buffer to receive the relevant handles
*
* This function is meant for U-Boot internal calls. For the API implementation
* of the LocateHandle service see efi_locate_handle_ext.
*
- * @search_type selection criterion
- * @protocol GUID of the protocol
- * @search_key registration key
- * @buffer_size size of the buffer to receive the handles in bytes
- * @buffer buffer to receive the relevant handles
- * @return status code
+ * Return: status code
*/
static efi_status_t efi_locate_handle(
enum efi_locate_search_type search_type,
return EFI_SUCCESS;
}
-/*
- * Locate handles implementing a protocol.
+/**
+ * efi_locate_handle_ext() - locate handles implementing a protocol.
+ * @search_type: selection criterion
+ * @protocol: GUID of the protocol
+ * @search_key: registration key
+ * @buffer_size: size of the buffer to receive the handles in bytes
+ * @buffer: buffer to receive the relevant handles
*
* This function implements the LocateHandle service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @search_type selection criterion
- * @protocol GUID of the protocol
- * @search_key registration key
- * @buffer_size size of the buffer to receive the handles in bytes
- * @buffer buffer to receive the relevant handles
- * @return 0 if the handle implements the protocol
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: 0 if the handle implements the protocol
*/
static efi_status_t EFIAPI efi_locate_handle_ext(
enum efi_locate_search_type search_type,
buffer_size, buffer));
}
-/* Collapses configuration table entries, removing index i */
+/**
+ * efi_remove_configuration_table() - collapses configuration table entries,
+ * removing index i
+ *
+ * @i: index of the table entry to be removed
+ */
static void efi_remove_configuration_table(int i)
{
struct efi_configuration_table *this = &efi_conf_table[i];
systab.nr_tables--;
}
-/*
- * Adds, updates, or removes a configuration table.
+/**
+ * efi_install_configuration_table() - adds, updates, or removes a
+ * configuration table
+ * @guid: GUID of the installed table
+ * @table: table to be installed
*
* This function is used for internal calls. For the API implementation of the
* InstallConfigurationTable service see efi_install_configuration_table_ext.
*
- * @guid GUID of the installed table
- * @table table to be installed
- * @return status code
+ * Return: status code
*/
efi_status_t efi_install_configuration_table(const efi_guid_t *guid,
void *table)
{
+ struct efi_event *evt;
int i;
if (!guid)
efi_conf_table[i].table = table;
else
efi_remove_configuration_table(i);
- return EFI_SUCCESS;
+ goto out;
}
}
efi_conf_table[i].table = table;
systab.nr_tables = i + 1;
+out:
+ /* Notify that the configuration table was changed */
+ list_for_each_entry(evt, &efi_events, link) {
+ if (evt->group && !guidcmp(evt->group, guid)) {
+ efi_signal_event(evt, false);
+ break;
+ }
+ }
+
return EFI_SUCCESS;
}
-/*
- * Adds, updates, or removes a configuration table.
+/**
+ * efi_install_configuration_table_ex() - Adds, updates, or removes a
+ * configuration table.
+ * @guid: GUID of the installed table
+ * @table: table to be installed
*
* This function implements the InstallConfigurationTable service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @guid GUID of the installed table
- * @table table to be installed
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid,
void *table)
return EFI_EXIT(efi_install_configuration_table(guid, table));
}
-/*
- * Initialize a loaded_image_info + loaded_image_info object with correct
+/**
+ * efi_setup_loaded_image() - initialize a loaded image
+ * @info: loaded image info to be passed to the entry point of the image
+ * @obj: internal object associated with the loaded image
+ * @device_path: device path of the loaded image
+ * @file_path: file path of the loaded image
+ *
+ * Initialize a loaded_image_info and loaded_image_info object with correct
* protocols, boot-device, etc.
*
- * @info loaded image info to be passed to the entry point of the
- * image
- * @obj internal object associated with the loaded image
- * @device_path device path of the loaded image
- * @file_path file path of the loaded image
- * @return status code
+ * Return: status code
*/
efi_status_t efi_setup_loaded_image(
struct efi_loaded_image *info, struct efi_object *obj,
return ret;
}
-/*
- * Load an image using a file path.
+/**
+ * efi_load_image_from_path() - load an image using a file path
+ * @file_path: the path of the image to load
+ * @buffer: buffer containing the loaded image
*
- * @file_path the path of the image to load
- * @buffer buffer containing the loaded image
- * @return status code
+ * Return: status code
*/
efi_status_t efi_load_image_from_path(struct efi_device_path *file_path,
void **buffer)
struct efi_file_info *info = NULL;
struct efi_file_handle *f;
static efi_status_t ret;
- uint64_t bs;
+ efi_uintn_t bs;
f = efi_file_from_path(file_path);
if (!f)
if (ret)
goto error;
- EFI_CALL(ret = f->read(f, &info->file_size, *buffer));
+ bs = info->file_size;
+ EFI_CALL(ret = f->read(f, &bs, *buffer));
error:
free(info);
return ret;
}
-/*
- * Load an EFI image into memory.
+/**
+ * efi_load_image() - load an EFI image into memory
+ * @boot_policy: true for request originating from the boot manager
+ * @parent_image: the caller's image handle
+ * @file_path: the path of the image to load
+ * @source_buffer: memory location from which the image is installed
+ * @source_size: size of the memory area from which the image is installed
+ * @image_handle: handle for the newly installed image
*
* This function implements the LoadImage service.
+ *
* See the Unified Extensible Firmware Interface (UEFI) specification
* for details.
*
- * @boot_policy true for request originating from the boot manager
- * @parent_image the caller's image handle
- * @file_path the path of the image to load
- * @source_buffer memory location from which the image is installed
- * @source_size size of the memory area from which the image is
- * installed
- * @image_handle handle for the newly installed image
- * @return status code
+ * Return: status code
*/
static efi_status_t EFIAPI efi_load_image(bool boot_policy,
efi_handle_t parent_image,
struct efi_device_path *file_path,
void *source_buffer,
- unsigned long source_size,
+ efi_uintn_t source_size,
efi_handle_t *image_handle)
{
struct efi_loaded_image *info;
struct efi_object *obj;
efi_status_t ret;
- EFI_ENTRY("%d, %p, %pD, %p, %ld, %p", boot_policy, parent_image,
+ EFI_ENTRY("%d, %p, %pD, %p, %zd, %p", boot_policy, parent_image,
file_path, source_buffer, source_size, image_handle);
if (!image_handle || !parent_image) {
return EFI_EXIT(ret);
}
-/*
- * Call the entry point of an image.
+/**
+ * efi_start_image() - dall the entry point of an image
+ * @image_handle: handle of the image
+ * @exit_data_size: size of the buffer
+ * @exit_data: buffer to receive the exit data of the called image
*
* This function implements the StartImage service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @image_handle handle of the image
- * @exit_data_size size of the buffer
- * @exit_data buffer to receive the exit data of the called image
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
unsigned long *exit_data_size,
return EFI_CALL(systab.boottime->exit(image_handle, ret, 0, NULL));
}
-/*
- * Leave an EFI application or driver.
+/**
+ * efi_exit() - leave an EFI application or driver
+ * @image_handle: handle of the application or driver that is exiting
+ * @exit_status: status code
+ * @exit_data_size: size of the buffer in bytes
+ * @exit_data: buffer with data describing an error
*
* This function implements the Exit service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @image_handle handle of the application or driver that is exiting
- * @exit_status status code
- * @exit_data_size size of the buffer in bytes
- * @exit_data buffer with data describing an error
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle,
efi_status_t exit_status,
panic("EFI application exited");
}
-/*
- * Unload an EFI image.
+/**
+ * efi_unload_image() - unload an EFI image
+ * @image_handle: handle of the image to be unloaded
*
* This function implements the UnloadImage service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @image_handle handle of the image to be unloaded
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle)
{
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Fix up caches for EFI payloads if necessary.
+/**
+ * efi_exit_caches() - fix up caches for EFI payloads if necessary
*/
static void efi_exit_caches(void)
{
#endif
}
-/*
- * Stop all boot services.
+/**
+ * efi_exit_boot_services() - stop all boot services
+ * @image_handle: handle of the loaded image
+ * @map_key: key of the memory map
*
* This function implements the ExitBootServices service.
+ *
* See the Unified Extensible Firmware Interface (UEFI) specification
* for details.
*
- * All timer events are disabled.
- * For exit boot services events the notification function is called.
- * The boot services are disabled in the system table.
+ * All timer events are disabled. For exit boot services events the
+ * notification function is called. The boot services are disabled in the
+ * system table.
*
- * @image_handle handle of the loaded image
- * @map_key key of the memory map
- * @return status code
+ * Return: status code
*/
static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
unsigned long map_key)
if (!systab.boottime)
return EFI_EXIT(EFI_SUCCESS);
+ /* Add related events to the event group */
+ list_for_each_entry(evt, &efi_events, link) {
+ if (evt->type == EVT_SIGNAL_EXIT_BOOT_SERVICES)
+ evt->group = &efi_guid_event_group_exit_boot_services;
+ }
/* Notify that ExitBootServices is invoked. */
list_for_each_entry(evt, &efi_events, link) {
- if (evt->type != EVT_SIGNAL_EXIT_BOOT_SERVICES)
- continue;
- evt->is_signaled = true;
- efi_signal_event(evt, false);
+ if (evt->group &&
+ !guidcmp(evt->group,
+ &efi_guid_event_group_exit_boot_services)) {
+ efi_signal_event(evt, false);
+ break;
+ }
}
/* TODO Should persist EFI variables here */
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Get next value of the counter.
+/**
+ * efi_get_next_monotonic_count() - get next value of the counter
+ * @count: returned value of the counter
*
* This function implements the NextMonotonicCount service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @count returned value of the counter
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count)
{
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Sleep.
+/**
+ * efi_stall() - sleep
+ * @microseconds: period to sleep in microseconds
*
- * This function implements the Stall sercive.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
+ * This function implements the Stall service.
*
- * @microseconds period to sleep in microseconds
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_stall(unsigned long microseconds)
{
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Reset the watchdog timer.
+/**
+ * efi_set_watchdog_timer() - reset the watchdog timer
+ * @timeout: seconds before reset by watchdog
+ * @watchdog_code: code to be logged when resetting
+ * @data_size: size of buffer in bytes
+ * @watchdog_data: buffer with data describing the reset reason
*
* This function implements the SetWatchdogTimer service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @timeout seconds before reset by watchdog
- * @watchdog_code code to be logged when resetting
- * @data_size size of buffer in bytes
- * @watchdog_data buffer with data describing the reset reason
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout,
uint64_t watchdog_code,
return EFI_EXIT(efi_set_watchdog(timeout));
}
-/*
- * Close a protocol.
+/**
+ * efi_close_protocol() - close a protocol
+ * @handle: handle on which the protocol shall be closed
+ * @protocol: GUID of the protocol to close
+ * @agent_handle: handle of the driver
+ * @controller_handle: handle of the controller
*
* This function implements the CloseProtocol service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle on which the protocol shall be closed
- * @protocol GUID of the protocol to close
- * @agent_handle handle of the driver
- * @controller_handle handle of the controller
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_close_protocol(efi_handle_t handle,
const efi_guid_t *protocol,
return EFI_EXIT(r);
}
-/*
- * Provide information about then open status of a protocol on a handle
+/**
+ * efi_open_protocol_information() - provide information about then open status
+ * of a protocol on a handle
+ * @handle: handle for which the information shall be retrieved
+ * @protocol: GUID of the protocol
+ * @entry_buffer: buffer to receive the open protocol information
+ * @entry_count: number of entries available in the buffer
*
* This function implements the OpenProtocolInformation service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle for which the information shall be retrieved
- * @protocol GUID of the protocol
- * @entry_buffer buffer to receive the open protocol information
- * @entry_count number of entries available in the buffer
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_open_protocol_information(
efi_handle_t handle, const efi_guid_t *protocol,
return EFI_EXIT(r);
}
-/*
- * Get protocols installed on a handle.
+/**
+ * efi_protocols_per_handle() - get protocols installed on a handle
+ * @handle: handle for which the information is retrieved
+ * @protocol_buffer: buffer with protocol GUIDs
+ * @protocol_buffer_count: number of entries in the buffer
*
* This function implements the ProtocolsPerHandleService.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle for which the information is retrieved
- * @protocol_buffer buffer with protocol GUIDs
- * @protocol_buffer_count number of entries in the buffer
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_protocols_per_handle(
efi_handle_t handle, efi_guid_t ***protocol_buffer,
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Locate handles implementing a protocol.
+/**
+ * efi_locate_handle_buffer() - locate handles implementing a protocol
+ * @search_type: selection criterion
+ * @protocol: GUID of the protocol
+ * @search_key: registration key
+ * @no_handles: number of returned handles
+ * @buffer: buffer with the returned handles
*
* This function implements the LocateHandleBuffer service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @search_type selection criterion
- * @protocol GUID of the protocol
- * @search_key registration key
- * @no_handles number of returned handles
- * @buffer buffer with the returned handles
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_locate_handle_buffer(
enum efi_locate_search_type search_type,
return EFI_EXIT(r);
}
-/*
- * Find an interface implementing a protocol.
+/**
+ * efi_locate_protocol() - find an interface implementing a protocol
+ * @protocol: GUID of the protocol
+ * @registration: registration key passed to the notification function
+ * @protocol_interface: interface implementing the protocol
*
* This function implements the LocateProtocol service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @protocol GUID of the protocol
- * @registration registration key passed to the notification function
- * @protocol_interface interface implementing the protocol
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_locate_protocol(const efi_guid_t *protocol,
void *registration,
return EFI_EXIT(EFI_NOT_FOUND);
}
-/*
- * Get the device path and handle of an device implementing a protocol.
+/**
+ * efi_locate_device_path() - Get the device path and handle of an device
+ * implementing a protocol
+ * @protocol: GUID of the protocol
+ * @device_path: device path
+ * @device: handle of the device
*
* This function implements the LocateDevicePath service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @protocol GUID of the protocol
- * @device_path device path
- * @device handle of the device
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_locate_device_path(
const efi_guid_t *protocol,
}
/* Find end of device path */
- len = efi_dp_size(*device_path);
+ len = efi_dp_instance_size(*device_path);
/* Get all handles implementing the protocol */
ret = EFI_CALL(efi_locate_handle_buffer(BY_PROTOCOL, protocol, NULL,
if (ret != EFI_SUCCESS)
continue;
dp = (struct efi_device_path *)handler->protocol_interface;
- len_dp = efi_dp_size(dp);
+ len_dp = efi_dp_instance_size(dp);
/*
* This handle can only be a better fit
* if its device path length is longer than the best fit and
return EFI_EXIT(ret);
}
-/*
- * Install multiple protocol interfaces.
+/**
+ * efi_install_multiple_protocol_interfaces() - Install multiple protocol
+ * interfaces
+ * @handle: handle on which the protocol interfaces shall be installed
+ * @...: NULL terminated argument list with pairs of protocol GUIDS and
+ * interfaces
*
* This function implements the MultipleProtocolInterfaces service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle on which the protocol interfaces shall be installed
- * @... NULL terminated argument list with pairs of protocol GUIDS and
- * interfaces
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(
void **handle, ...)
{
EFI_ENTRY("%p", handle);
- va_list argptr;
+ efi_va_list argptr;
const efi_guid_t *protocol;
void *protocol_interface;
efi_status_t r = EFI_SUCCESS;
if (!handle)
return EFI_EXIT(EFI_INVALID_PARAMETER);
- va_start(argptr, handle);
+ efi_va_start(argptr, handle);
for (;;) {
- protocol = va_arg(argptr, efi_guid_t*);
+ protocol = efi_va_arg(argptr, efi_guid_t*);
if (!protocol)
break;
- protocol_interface = va_arg(argptr, void*);
+ protocol_interface = efi_va_arg(argptr, void*);
r = EFI_CALL(efi_install_protocol_interface(
handle, protocol,
EFI_NATIVE_INTERFACE,
break;
i++;
}
- va_end(argptr);
+ efi_va_end(argptr);
if (r == EFI_SUCCESS)
return EFI_EXIT(r);
/* If an error occurred undo all changes. */
- va_start(argptr, handle);
+ efi_va_start(argptr, handle);
for (; i; --i) {
- protocol = va_arg(argptr, efi_guid_t*);
- protocol_interface = va_arg(argptr, void*);
+ protocol = efi_va_arg(argptr, efi_guid_t*);
+ protocol_interface = efi_va_arg(argptr, void*);
EFI_CALL(efi_uninstall_protocol_interface(handle, protocol,
protocol_interface));
}
- va_end(argptr);
+ efi_va_end(argptr);
return EFI_EXIT(r);
}
-/*
- * Uninstall multiple protocol interfaces.
+/**
+ * efi_uninstall_multiple_protocol_interfaces() - uninstall multiple protocol
+ * interfaces
+ * @handle: handle from which the protocol interfaces shall be removed
+ * @...: NULL terminated argument list with pairs of protocol GUIDS and
+ * interfaces
*
* This function implements the UninstallMultipleProtocolInterfaces service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle from which the protocol interfaces shall be removed
- * @... NULL terminated argument list with pairs of protocol GUIDS and
- * interfaces
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(
void *handle, ...)
{
EFI_ENTRY("%p", handle);
- va_list argptr;
+ efi_va_list argptr;
const efi_guid_t *protocol;
void *protocol_interface;
efi_status_t r = EFI_SUCCESS;
if (!handle)
return EFI_EXIT(EFI_INVALID_PARAMETER);
- va_start(argptr, handle);
+ efi_va_start(argptr, handle);
for (;;) {
- protocol = va_arg(argptr, efi_guid_t*);
+ protocol = efi_va_arg(argptr, efi_guid_t*);
if (!protocol)
break;
- protocol_interface = va_arg(argptr, void*);
+ protocol_interface = efi_va_arg(argptr, void*);
r = EFI_CALL(efi_uninstall_protocol_interface(
handle, protocol,
protocol_interface));
break;
i++;
}
- va_end(argptr);
+ efi_va_end(argptr);
if (r == EFI_SUCCESS)
return EFI_EXIT(r);
/* If an error occurred undo all changes. */
- va_start(argptr, handle);
+ efi_va_start(argptr, handle);
for (; i; --i) {
- protocol = va_arg(argptr, efi_guid_t*);
- protocol_interface = va_arg(argptr, void*);
+ protocol = efi_va_arg(argptr, efi_guid_t*);
+ protocol_interface = efi_va_arg(argptr, void*);
EFI_CALL(efi_install_protocol_interface(&handle, protocol,
EFI_NATIVE_INTERFACE,
protocol_interface));
}
- va_end(argptr);
+ efi_va_end(argptr);
return EFI_EXIT(r);
}
-/*
- * Calculate cyclic redundancy code.
+/**
+ * efi_calculate_crc32() - calculate cyclic redundancy code
+ * @data: buffer with data
+ * @data_size: size of buffer in bytes
+ * @crc32_p: cyclic redundancy code
*
* This function implements the CalculateCrc32 service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @data buffer with data
- * @data_size size of buffer in bytes
- * @crc32_p cyclic redundancy code
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_calculate_crc32(void *data,
unsigned long data_size,
return EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Copy memory.
+/**
+ * efi_copy_mem() - copy memory
+ * @destination: destination of the copy operation
+ * @source: source of the copy operation
+ * @length: number of bytes to copy
*
* This function implements the CopyMem service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @destination destination of the copy operation
- * @source source of the copy operation
- * @length number of bytes to copy
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
*/
static void EFIAPI efi_copy_mem(void *destination, const void *source,
size_t length)
EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Fill memory with a byte value.
+/**
+ * efi_set_mem() - Fill memory with a byte value.
+ * @buffer: buffer to fill
+ * @size: size of buffer in bytes
+ * @value: byte to copy to the buffer
*
* This function implements the SetMem service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @buffer buffer to fill
- * @size size of buffer in bytes
- * @value byte to copy to the buffer
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
*/
static void EFIAPI efi_set_mem(void *buffer, size_t size, uint8_t value)
{
EFI_EXIT(EFI_SUCCESS);
}
-/*
- * Open protocol interface on a handle.
+/**
+ * efi_protocol_open() - open protocol interface on a handle
+ * @handler: handler of a protocol
+ * @protocol_interface: interface implementing the protocol
+ * @agent_handle: handle of the driver
+ * @controller_handle: handle of the controller
+ * @attributes: attributes indicating how to open the protocol
*
- * @handler handler of a protocol
- * @protocol_interface interface implementing the protocol
- * @agent_handle handle of the driver
- * @controller_handle handle of the controller
- * @attributes attributes indicating how to open the protocol
- * @return status code
+ * Return: status code
*/
static efi_status_t efi_protocol_open(
struct efi_handler *handler,
return EFI_SUCCESS;
}
-/*
- * Open protocol interface on a handle.
+/**
+ * efi_open_protocol() - open protocol interface on a handle
+ * @handle: handle on which the protocol shall be opened
+ * @protocol: GUID of the protocol
+ * @protocol_interface: interface implementing the protocol
+ * @agent_handle: handle of the driver
+ * @controller_handle: handle of the controller
+ * @attributes: attributes indicating how to open the protocol
*
* This function implements the OpenProtocol interface.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle on which the protocol shall be opened
- * @protocol GUID of the protocol
- * @protocol_interface interface implementing the protocol
- * @agent_handle handle of the driver
- * @controller_handle handle of the controller
- * @attributes attributes indicating how to open the protocol
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_open_protocol(
void *handle, const efi_guid_t *protocol,
return EFI_EXIT(r);
}
-/*
- * Get interface of a protocol on a handle.
+/**
+ * efi_handle_protocol() - get interface of a protocol on a handle
+ * @handle: handle on which the protocol shall be opened
+ * @protocol: GUID of the protocol
+ * @protocol_interface: interface implementing the protocol
*
* This function implements the HandleProtocol service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @handle handle on which the protocol shall be opened
- * @protocol GUID of the protocol
- * @protocol_interface interface implementing the protocol
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_handle_protocol(efi_handle_t handle,
const efi_guid_t *protocol,
NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
}
+/**
+ * efi_bind_controller() - bind a single driver to a controller
+ * @controller_handle: controller handle
+ * @driver_image_handle: driver handle
+ * @remain_device_path: remaining path
+ *
+ * Return: status code
+ */
static efi_status_t efi_bind_controller(
efi_handle_t controller_handle,
efi_handle_t driver_image_handle,
return r;
}
+/**
+ * efi_connect_single_controller() - connect a single driver to a controller
+ * @controller_handle: controller
+ * @driver_image_handle: driver
+ * @remain_device_path: remainting path
+ *
+ * Return: status code
+ */
static efi_status_t efi_connect_single_controller(
efi_handle_t controller_handle,
efi_handle_t *driver_image_handle,
return EFI_SUCCESS;
}
-/*
- * Connect a controller to a driver.
+/**
+ * efi_connect_controller() - connect a controller to a driver
+ * @controller_handle: handle of the controller
+ * @driver_image_handle: handle of the driver
+ * @remain_device_path: device path of a child controller
+ * @recursive: true to connect all child controllers
*
* This function implements the ConnectController service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
*
* First all driver binding protocol handles are tried for binding drivers.
* Afterwards all handles that have openened a protocol of the controller
* with EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER are connected to drivers.
*
- * @controller_handle handle of the controller
- * @driver_image_handle handle of the driver
- * @remain_device_path device path of a child controller
- * @recursive true to connect all child controllers
- * @return status code
+ * Return: status code
*/
static efi_status_t EFIAPI efi_connect_controller(
efi_handle_t controller_handle,
return EFI_EXIT(ret);
}
-/*
- * Get all child controllers associated to a driver.
+/**
+ * efi_reinstall_protocol_interface() - reinstall protocol interface
+ * @handle: handle on which the protocol shall be reinstalled
+ * @protocol: GUID of the protocol to be installed
+ * @old_interface: interface to be removed
+ * @new_interface: interface to be installed
+ *
+ * This function implements the ReinstallProtocolInterface service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * The old interface is uninstalled. The new interface is installed.
+ * Drivers are connected.
+ *
+ * Return: status code
+ */
+static efi_status_t EFIAPI efi_reinstall_protocol_interface(
+ efi_handle_t handle, const efi_guid_t *protocol,
+ void *old_interface, void *new_interface)
+{
+ efi_status_t ret;
+
+ EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface,
+ new_interface);
+ ret = EFI_CALL(efi_uninstall_protocol_interface(handle, protocol,
+ old_interface));
+ if (ret != EFI_SUCCESS)
+ goto out;
+ ret = EFI_CALL(efi_install_protocol_interface(&handle, protocol,
+ EFI_NATIVE_INTERFACE,
+ new_interface));
+ if (ret != EFI_SUCCESS)
+ goto out;
+ /*
+ * The returned status code has to be ignored.
+ * Do not create an error if no suitable driver for the handle exists.
+ */
+ EFI_CALL(efi_connect_controller(handle, NULL, NULL, true));
+out:
+ return EFI_EXIT(ret);
+}
+
+/**
+ * efi_get_child_controllers() - get all child controllers associated to a driver
+ * @efiobj: handle of the controller
+ * @driver_handle: handle of the driver
+ * @number_of_children: number of child controllers
+ * @child_handle_buffer: handles of the the child controllers
+ *
* The allocated buffer has to be freed with free().
*
- * @efiobj handle of the controller
- * @driver_handle handle of the driver
- * @number_of_children number of child controllers
- * @child_handle_buffer handles of the the child controllers
+ * Return: status code
*/
static efi_status_t efi_get_child_controllers(
struct efi_object *efiobj,
return EFI_SUCCESS;
}
-/*
- * Disconnect a controller from a driver.
+/**
+ * efi_disconnect_controller() - disconnect a controller from a driver
+ * @controller_handle: handle of the controller
+ * @driver_image_handle: handle of the driver
+ * @child_handle: handle of the child to destroy
*
* This function implements the DisconnectController service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
*
- * @controller_handle handle of the controller
- * @driver_image_handle handle of the driver
- * @child_handle handle of the child to destroy
- * @return status code
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
*/
static efi_status_t EFIAPI efi_disconnect_controller(
efi_handle_t controller_handle,
projects / oweals / u-boot.git / blobdiff