DECLARE_GLOBAL_DATA_PTR;
/* Task priority level */
-static UINTN efi_tpl = TPL_APPLICATION;
+static efi_uintn_t efi_tpl = TPL_APPLICATION;
/* This list contains all the EFI objects our payload has access to */
LIST_HEAD(efi_obj_list);
static int entry_count;
static int nesting_level;
+/* GUID of the EFI_DRIVER_BINDING_PROTOCOL */
+const efi_guid_t efi_guid_driver_binding_protocol =
+ EFI_DRIVER_BINDING_PROTOCOL_GUID;
+
+static efi_status_t EFIAPI efi_disconnect_controller(
+ efi_handle_t controller_handle,
+ efi_handle_t driver_image_handle,
+ efi_handle_t child_handle);
/* Called on every callback entry */
int __efi_entry_check(void)
* @new_tpl new value of the task priority level
* @return old value of the task priority level
*/
-static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl)
+static unsigned long EFIAPI efi_raise_tpl(efi_uintn_t new_tpl)
{
- UINTN old_tpl = efi_tpl;
+ efi_uintn_t old_tpl = efi_tpl;
EFI_ENTRY("0x%zx", new_tpl);
*
* @old_tpl value of the task priority level to be restored
*/
-static void EFIAPI efi_restore_tpl(UINTN old_tpl)
+static void EFIAPI efi_restore_tpl(efi_uintn_t old_tpl)
{
EFI_ENTRY("0x%zx", old_tpl);
* @return status code
*/
static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type,
- unsigned long pages,
+ efi_uintn_t pages,
uint64_t *memory)
{
efi_status_t r;
- EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory);
+ EFI_ENTRY("%d, %d, 0x%zx, %p", type, memory_type, pages, memory);
r = efi_allocate_pages(type, memory_type, pages, memory);
return EFI_EXIT(r);
}
* @return status code
*/
static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory,
- unsigned long pages)
+ efi_uintn_t pages)
{
efi_status_t r;
- EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages);
+ EFI_ENTRY("%"PRIx64", 0x%zx", memory, pages);
r = efi_free_pages(memory, pages);
return EFI_EXIT(r);
}
* @return status code
*/
static efi_status_t EFIAPI efi_get_memory_map_ext(
- unsigned long *memory_map_size,
+ efi_uintn_t *memory_map_size,
struct efi_mem_desc *memory_map,
- unsigned long *map_key,
- unsigned long *descriptor_size,
+ efi_uintn_t *map_key,
+ efi_uintn_t *descriptor_size,
uint32_t *descriptor_version)
{
efi_status_t r;
* @return status code
*/
static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type,
- unsigned long size,
+ efi_uintn_t size,
void **buffer)
{
efi_status_t r;
- EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer);
+ EFI_ENTRY("%d, %zd, %p", pool_type, size, buffer);
r = efi_allocate_pool(pool_type, size, buffer);
return EFI_EXIT(r);
}
return EFI_EXIT(r);
}
-static efi_status_t efi_create_handle(void **handle)
+/*
+ * Add a new object to the object list.
+ *
+ * The protocols list is initialized.
+ * The object handle is set.
+ *
+ * @obj object to be added
+ */
+void efi_add_handle(struct efi_object *obj)
+{
+ if (!obj)
+ return;
+ INIT_LIST_HEAD(&obj->protocols);
+ obj->handle = obj;
+ list_add_tail(&obj->link, &efi_obj_list);
+}
+
+/*
+ * Create handle.
+ *
+ * @handle new handle
+ * @return status code
+ */
+efi_status_t efi_create_handle(efi_handle_t *handle)
{
struct efi_object *obj;
efi_status_t r;
(void **)&obj);
if (r != EFI_SUCCESS)
return r;
- memset(obj, 0, sizeof(struct efi_object));
- obj->handle = obj;
- list_add_tail(&obj->link, &efi_obj_list);
- *handle = obj;
+ efi_add_handle(obj);
+ *handle = obj->handle;
return r;
}
+/*
+ * Find a protocol on a handle.
+ *
+ * @handle handle
+ * @protocol_guid GUID of the protocol
+ * @handler reference to the protocol
+ * @return status code
+ */
+efi_status_t efi_search_protocol(const efi_handle_t handle,
+ const efi_guid_t *protocol_guid,
+ struct efi_handler **handler)
+{
+ struct efi_object *efiobj;
+ struct list_head *lhandle;
+
+ if (!handle || !protocol_guid)
+ return EFI_INVALID_PARAMETER;
+ efiobj = efi_search_obj(handle);
+ if (!efiobj)
+ return EFI_INVALID_PARAMETER;
+ list_for_each(lhandle, &efiobj->protocols) {
+ struct efi_handler *protocol;
+
+ protocol = list_entry(lhandle, struct efi_handler, link);
+ if (!guidcmp(protocol->guid, protocol_guid)) {
+ if (handler)
+ *handler = protocol;
+ return EFI_SUCCESS;
+ }
+ }
+ return EFI_NOT_FOUND;
+}
+
+/*
+ * 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
+ * @return status code
+ */
+efi_status_t efi_remove_protocol(const efi_handle_t handle,
+ const efi_guid_t *protocol,
+ void *protocol_interface)
+{
+ struct efi_handler *handler;
+ efi_status_t ret;
+
+ ret = efi_search_protocol(handle, protocol, &handler);
+ if (ret != EFI_SUCCESS)
+ return ret;
+ if (guidcmp(handler->guid, protocol))
+ return EFI_INVALID_PARAMETER;
+ list_del(&handler->link);
+ free(handler);
+ return EFI_SUCCESS;
+}
+
+/*
+ * Delete all protocols from a handle.
+ *
+ * @handle handle from which the protocols shall be deleted
+ * @return status code
+ */
+efi_status_t efi_remove_all_protocols(const efi_handle_t handle)
+{
+ struct efi_object *efiobj;
+ struct efi_handler *protocol;
+ struct efi_handler *pos;
+
+ efiobj = efi_search_obj(handle);
+ if (!efiobj)
+ return EFI_INVALID_PARAMETER;
+ list_for_each_entry_safe(protocol, pos, &efiobj->protocols, link) {
+ efi_status_t ret;
+
+ ret = efi_remove_protocol(handle, protocol->guid,
+ protocol->protocol_interface);
+ if (ret != EFI_SUCCESS)
+ return ret;
+ }
+ return EFI_SUCCESS;
+}
+
+/*
+ * Delete handle.
+ *
+ * @handle handle to delete
+ */
+void efi_delete_handle(struct efi_object *obj)
+{
+ if (!obj)
+ return;
+ efi_remove_all_protocols(obj->handle);
+ list_del(&obj->link);
+ free(obj);
+}
+
/*
* Our event capabilities are very limited. Only a small limited
* number of events is allowed to coexist.
* @event created event
* @return status code
*/
-efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl,
+efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
* @return status code
*/
static efi_status_t EFIAPI efi_create_event_ext(
- uint32_t type, UINTN notify_tpl,
+ uint32_t type, efi_uintn_t notify_tpl,
void (EFIAPI *notify_function) (
struct efi_event *event,
void *context),
* @index index of the event that was signaled
* @return status code
*/
-static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events,
+static efi_status_t EFIAPI efi_wait_for_event(efi_uintn_t num_events,
struct efi_event **event,
- size_t *index)
+ efi_uintn_t *index)
{
int i, j;
- EFI_ENTRY("%ld, %p, %p", num_events, event, index);
+ EFI_ENTRY("%zd, %p, %p", num_events, event, index);
/* Check parameters */
if (!num_events || !event)
* @handle handle to find
* @return EFI object
*/
-static struct efi_object *efi_search_obj(void *handle)
+struct efi_object *efi_search_obj(const efi_handle_t handle)
{
- struct list_head *lhandle;
-
- list_for_each(lhandle, &efi_obj_list) {
- struct efi_object *efiobj;
+ struct efi_object *efiobj;
- efiobj = list_entry(lhandle, struct efi_object, link);
+ list_for_each_entry(efiobj, &efi_obj_list, link) {
if (efiobj->handle == handle)
return efiobj;
}
return NULL;
}
+/*
+ * Create open protocol info entry and add it to a protocol.
+ *
+ * @handler handler of a protocol
+ * @return open protocol info entry
+ */
+static struct efi_open_protocol_info_entry *efi_create_open_info(
+ struct efi_handler *handler)
+{
+ struct efi_open_protocol_info_item *item;
+
+ item = calloc(1, sizeof(struct efi_open_protocol_info_item));
+ if (!item)
+ return NULL;
+ /* Append the item to the open protocol info list. */
+ list_add_tail(&item->link, &handler->open_infos);
+
+ return &item->info;
+}
+
+/*
+ * Remove an open protocol info entry from a protocol.
+ *
+ * @handler handler of a protocol
+ * @return status code
+ */
+static efi_status_t efi_delete_open_info(
+ struct efi_open_protocol_info_item *item)
+{
+ list_del(&item->link);
+ free(item);
+ return EFI_SUCCESS;
+}
+
+/*
+ * 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
+ * @return status code
+ */
+efi_status_t efi_add_protocol(const efi_handle_t handle,
+ const efi_guid_t *protocol,
+ void *protocol_interface)
+{
+ struct efi_object *efiobj;
+ struct efi_handler *handler;
+ efi_status_t ret;
+
+ efiobj = efi_search_obj(handle);
+ if (!efiobj)
+ return EFI_INVALID_PARAMETER;
+ ret = efi_search_protocol(handle, protocol, NULL);
+ if (ret != EFI_NOT_FOUND)
+ return EFI_INVALID_PARAMETER;
+ handler = calloc(1, sizeof(struct efi_handler));
+ if (!handler)
+ return EFI_OUT_OF_RESOURCES;
+ handler->guid = protocol;
+ handler->protocol_interface = protocol_interface;
+ INIT_LIST_HEAD(&handler->open_infos);
+ list_add_tail(&handler->link, &efiobj->protocols);
+ if (!guidcmp(&efi_guid_device_path, protocol))
+ EFI_PRINT("installed device path '%pD'\n", protocol_interface);
+ return EFI_SUCCESS;
+}
+
/*
* Install protocol interface.
*
void **handle, const efi_guid_t *protocol,
int protocol_interface_type, void *protocol_interface)
{
- struct list_head *lhandle;
- int i;
efi_status_t r;
EFI_ENTRY("%p, %pUl, %d, %p", handle, protocol, protocol_interface_type,
r = efi_create_handle(handle);
if (r != EFI_SUCCESS)
goto out;
+ debug("%sEFI: new handle %p\n", indent_string(nesting_level),
+ *handle);
+ } else {
+ debug("%sEFI: handle %p\n", indent_string(nesting_level),
+ *handle);
}
- /* Find object. */
- list_for_each(lhandle, &efi_obj_list) {
- struct efi_object *efiobj;
- efiobj = list_entry(lhandle, struct efi_object, link);
-
- if (efiobj->handle != *handle)
- continue;
- /* Check if protocol is already installed on the handle. */
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
- struct efi_handler *handler = &efiobj->protocols[i];
-
- if (!handler->guid)
- continue;
- if (!guidcmp(handler->guid, protocol)) {
- r = EFI_INVALID_PARAMETER;
- goto out;
- }
- }
- /* Install protocol in first empty slot. */
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
- struct efi_handler *handler = &efiobj->protocols[i];
-
- if (handler->guid)
- continue;
-
- handler->guid = protocol;
- handler->protocol_interface = protocol_interface;
- r = EFI_SUCCESS;
- goto out;
- }
- r = EFI_OUT_OF_RESOURCES;
- goto out;
- }
- r = EFI_INVALID_PARAMETER;
+ /* Add new protocol */
+ r = efi_add_protocol(*handle, protocol, protocol_interface);
out:
return EFI_EXIT(r);
}
* @new_interface interface to be installed
* @return status code
*/
-static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle,
- const efi_guid_t *protocol, void *old_interface,
- void *new_interface)
+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
+ */
+static efi_status_t efi_get_drivers(struct efi_object *efiobj,
+ const efi_guid_t *protocol,
+ efi_uintn_t *number_of_drivers,
+ efi_handle_t **driver_handle_buffer)
+{
+ struct efi_handler *handler;
+ struct efi_open_protocol_info_item *item;
+ efi_uintn_t count = 0, i;
+ bool duplicate;
+
+ /* Count all driver associations */
+ list_for_each_entry(handler, &efiobj->protocols, link) {
+ if (protocol && guidcmp(handler->guid, protocol))
+ continue;
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.attributes &
+ EFI_OPEN_PROTOCOL_BY_DRIVER)
+ ++count;
+ }
+ }
+ /*
+ * Create buffer. In case of duplicate driver assignments the buffer
+ * will be too large. But that does not harm.
+ */
+ *number_of_drivers = 0;
+ *driver_handle_buffer = calloc(count, sizeof(efi_handle_t));
+ if (!*driver_handle_buffer)
+ return EFI_OUT_OF_RESOURCES;
+ /* Collect unique driver handles */
+ list_for_each_entry(handler, &efiobj->protocols, link) {
+ if (protocol && guidcmp(handler->guid, protocol))
+ continue;
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.attributes &
+ EFI_OPEN_PROTOCOL_BY_DRIVER) {
+ /* Check this is a new driver */
+ duplicate = false;
+ for (i = 0; i < *number_of_drivers; ++i) {
+ if ((*driver_handle_buffer)[i] ==
+ item->info.agent_handle)
+ duplicate = true;
+ }
+ /* Copy handle to buffer */
+ if (!duplicate) {
+ i = (*number_of_drivers)++;
+ (*driver_handle_buffer)[i] =
+ item->info.agent_handle;
+ }
+ }
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+/*
+ * Disconnect all drivers from a controller.
+ *
+ * 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
+ */
+static efi_status_t efi_disconnect_all_drivers(
+ struct efi_object *efiobj,
+ const efi_guid_t *protocol,
+ efi_handle_t child_handle)
+{
+ efi_uintn_t number_of_drivers;
+ efi_handle_t *driver_handle_buffer;
+ efi_status_t r, ret;
+
+ ret = efi_get_drivers(efiobj, protocol, &number_of_drivers,
+ &driver_handle_buffer);
+ if (ret != EFI_SUCCESS)
+ return ret;
+
+ ret = EFI_NOT_FOUND;
+ while (number_of_drivers) {
+ r = EFI_CALL(efi_disconnect_controller(
+ efiobj->handle,
+ driver_handle_buffer[--number_of_drivers],
+ child_handle));
+ if (r == EFI_SUCCESS)
+ ret = r;
+ }
+ free(driver_handle_buffer);
+ return ret;
+}
+
/*
* Uninstall protocol interface.
*
* @return status code
*/
static efi_status_t EFIAPI efi_uninstall_protocol_interface(
- void *handle, const efi_guid_t *protocol,
+ efi_handle_t handle, const efi_guid_t *protocol,
void *protocol_interface)
{
- struct list_head *lhandle;
- int i;
- efi_status_t r = EFI_NOT_FOUND;
+ struct efi_object *efiobj;
+ struct efi_handler *handler;
+ struct efi_open_protocol_info_item *item;
+ struct efi_open_protocol_info_item *pos;
+ efi_status_t r;
EFI_ENTRY("%p, %pUl, %p", handle, protocol, protocol_interface);
- if (!handle || !protocol) {
+ /* Check handle */
+ efiobj = efi_search_obj(handle);
+ if (!efiobj) {
r = EFI_INVALID_PARAMETER;
goto out;
}
-
- list_for_each(lhandle, &efi_obj_list) {
- struct efi_object *efiobj;
- efiobj = list_entry(lhandle, struct efi_object, link);
-
- if (efiobj->handle != handle)
- continue;
-
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
- struct efi_handler *handler = &efiobj->protocols[i];
- const efi_guid_t *hprotocol = handler->guid;
-
- if (!hprotocol)
- continue;
- if (!guidcmp(hprotocol, protocol)) {
- if (handler->protocol_interface) {
- r = EFI_ACCESS_DENIED;
- } else {
- handler->guid = 0;
- r = EFI_SUCCESS;
- }
- goto out;
- }
- }
+ /* Find the protocol on the handle */
+ r = efi_search_protocol(handle, protocol, &handler);
+ if (r != EFI_SUCCESS)
+ goto out;
+ /* Disconnect controllers */
+ efi_disconnect_all_drivers(efiobj, protocol, NULL);
+ if (!list_empty(&handler->open_infos)) {
+ r = EFI_ACCESS_DENIED;
+ goto out;
}
-
+ /* Close protocol */
+ list_for_each_entry_safe(item, pos, &handler->open_infos, link) {
+ if (item->info.attributes ==
+ EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL ||
+ item->info.attributes == EFI_OPEN_PROTOCOL_GET_PROTOCOL ||
+ item->info.attributes == EFI_OPEN_PROTOCOL_TEST_PROTOCOL)
+ list_del(&item->link);
+ }
+ if (!list_empty(&handler->open_infos)) {
+ r = EFI_ACCESS_DENIED;
+ goto out;
+ }
+ r = efi_remove_protocol(handle, protocol, protocol_interface);
out:
return EFI_EXIT(r);
}
const efi_guid_t *protocol, void *search_key,
struct efi_object *efiobj)
{
- int i;
+ efi_status_t ret;
switch (search_type) {
case ALL_HANDLES:
return 0;
case BY_REGISTER_NOTIFY:
+ /* TODO: RegisterProtocolNotify is not implemented yet */
return -1;
case BY_PROTOCOL:
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
- const efi_guid_t *guid = efiobj->protocols[i].guid;
- if (guid && !guidcmp(guid, protocol))
- return 0;
- }
+ ret = efi_search_protocol(efiobj->handle, protocol, NULL);
+ return (ret != EFI_SUCCESS);
+ default:
+ /* Invalid search type */
return -1;
}
-
- return -1;
}
/*
static efi_status_t efi_locate_handle(
enum efi_locate_search_type search_type,
const efi_guid_t *protocol, void *search_key,
- unsigned long *buffer_size, efi_handle_t *buffer)
+ efi_uintn_t *buffer_size, efi_handle_t *buffer)
{
- struct list_head *lhandle;
- unsigned long size = 0;
+ struct efi_object *efiobj;
+ efi_uintn_t size = 0;
+
+ /* Check parameters */
+ switch (search_type) {
+ case ALL_HANDLES:
+ break;
+ case BY_REGISTER_NOTIFY:
+ if (!search_key)
+ return EFI_INVALID_PARAMETER;
+ /* RegisterProtocolNotify is not implemented yet */
+ return EFI_UNSUPPORTED;
+ case BY_PROTOCOL:
+ if (!protocol)
+ return EFI_INVALID_PARAMETER;
+ break;
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+
+ /*
+ * efi_locate_handle_buffer uses this function for
+ * the calculation of the necessary buffer size.
+ * So do not require a buffer for buffersize == 0.
+ */
+ if (!buffer_size || (*buffer_size && !buffer))
+ return EFI_INVALID_PARAMETER;
/* Count how much space we need */
- list_for_each(lhandle, &efi_obj_list) {
- struct efi_object *efiobj;
- efiobj = list_entry(lhandle, struct efi_object, link);
- if (!efi_search(search_type, protocol, search_key, efiobj)) {
+ list_for_each_entry(efiobj, &efi_obj_list, link) {
+ if (!efi_search(search_type, protocol, search_key, efiobj))
size += sizeof(void*);
- }
}
if (*buffer_size < size) {
return EFI_NOT_FOUND;
/* Then fill the array */
- list_for_each(lhandle, &efi_obj_list) {
- struct efi_object *efiobj;
- efiobj = list_entry(lhandle, struct efi_object, link);
- if (!efi_search(search_type, protocol, search_key, efiobj)) {
- *(buffer++) = efiobj->handle;
- }
+ list_for_each_entry(efiobj, &efi_obj_list, link) {
+ if (!efi_search(search_type, protocol, search_key, efiobj))
+ *buffer++ = efiobj->handle;
}
return EFI_SUCCESS;
static efi_status_t EFIAPI efi_locate_handle_ext(
enum efi_locate_search_type search_type,
const efi_guid_t *protocol, void *search_key,
- unsigned long *buffer_size, efi_handle_t *buffer)
+ efi_uintn_t *buffer_size, efi_handle_t *buffer)
{
EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key,
buffer_size, buffer);
buffer_size, buffer));
}
-/*
- * Get the device path and handle of an device implementing a protocol.
- *
- * 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
- */
-static efi_status_t EFIAPI efi_locate_device_path(
- const efi_guid_t *protocol,
- struct efi_device_path **device_path,
- efi_handle_t *device)
-{
- struct efi_object *efiobj;
-
- EFI_ENTRY("%pUl, %p, %p", protocol, device_path, device);
-
- efiobj = efi_dp_find_obj(*device_path, device_path);
- if (!efiobj)
- return EFI_EXIT(EFI_NOT_FOUND);
-
- *device = efiobj->handle;
-
- return EFI_EXIT(EFI_SUCCESS);
-}
-
/* Collapses configuration table entries, removing index i */
static void efi_remove_configuration_table(int i)
{
* @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
*/
-void efi_setup_loaded_image(struct efi_loaded_image *info, struct efi_object *obj,
- struct efi_device_path *device_path,
- struct efi_device_path *file_path)
+efi_status_t efi_setup_loaded_image(
+ struct efi_loaded_image *info, struct efi_object *obj,
+ struct efi_device_path *device_path,
+ struct efi_device_path *file_path)
{
+ efi_status_t ret;
+
+ /* Add internal object to object list */
+ efi_add_handle(obj);
+ /* efi_exit() assumes that the handle points to the info */
obj->handle = info;
+ info->file_path = file_path;
+ if (device_path)
+ info->device_handle = efi_dp_find_obj(device_path, NULL);
+
/*
* When asking for the device path interface, return
* bootefi_device_path
*/
- obj->protocols[0].guid = &efi_guid_device_path;
- obj->protocols[0].protocol_interface = device_path;
+ ret = efi_add_protocol(obj->handle, &efi_guid_device_path, device_path);
+ if (ret != EFI_SUCCESS)
+ goto failure;
/*
* When asking for the loaded_image interface, just
* return handle which points to loaded_image_info
*/
- obj->protocols[1].guid = &efi_guid_loaded_image;
- obj->protocols[1].protocol_interface = info;
-
- obj->protocols[2].guid = &efi_guid_console_control;
- obj->protocols[2].protocol_interface = (void *)&efi_console_control;
+ ret = efi_add_protocol(obj->handle, &efi_guid_loaded_image, info);
+ if (ret != EFI_SUCCESS)
+ goto failure;
- obj->protocols[3].guid = &efi_guid_device_path_to_text_protocol;
- obj->protocols[3].protocol_interface =
- (void *)&efi_device_path_to_text;
+ ret = efi_add_protocol(obj->handle, &efi_guid_console_control,
+ (void *)&efi_console_control);
+ if (ret != EFI_SUCCESS)
+ goto failure;
- info->file_path = file_path;
- if (device_path)
- info->device_handle = efi_dp_find_obj(device_path, NULL);
+ ret = efi_add_protocol(obj->handle,
+ &efi_guid_device_path_to_text_protocol,
+ (void *)&efi_device_path_to_text);
+ if (ret != EFI_SUCCESS)
+ goto failure;
- list_add_tail(&obj->link, &efi_obj_list);
+ return ret;
+failure:
+ printf("ERROR: Failure to install protocols for loaded image\n");
+ return ret;
}
/*
{
struct efi_loaded_image *info;
struct efi_object *obj;
+ efi_status_t ret;
- EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
+ EFI_ENTRY("%d, %p, %pD, %p, %ld, %p", boot_policy, parent_image,
file_path, source_buffer, source_size, image_handle);
info = calloc(1, sizeof(*info));
if (!source_buffer) {
struct efi_device_path *dp, *fp;
- efi_status_t ret;
ret = efi_load_image_from_path(file_path, &source_buffer);
- if (ret != EFI_SUCCESS) {
- free(info);
- free(obj);
- return EFI_EXIT(ret);
- }
-
+ if (ret != EFI_SUCCESS)
+ goto failure;
/*
* split file_path which contains both the device and
* file parts:
*/
efi_dp_split_file_path(file_path, &dp, &fp);
-
- efi_setup_loaded_image(info, obj, dp, fp);
+ ret = efi_setup_loaded_image(info, obj, dp, fp);
+ if (ret != EFI_SUCCESS)
+ goto failure;
} else {
/* In this case, file_path is the "device" path, ie.
* something like a HARDWARE_DEVICE:MEMORY_MAPPED
*/
- efi_setup_loaded_image(info, obj, file_path, NULL);
+ ret = efi_setup_loaded_image(info, obj, file_path, NULL);
+ if (ret != EFI_SUCCESS)
+ goto failure;
}
-
info->reserved = efi_load_pe(source_buffer, info);
if (!info->reserved) {
- free(info);
- free(obj);
- return EFI_EXIT(EFI_UNSUPPORTED);
+ ret = EFI_UNSUPPORTED;
+ goto failure;
}
-
info->system_table = &systab;
info->parent_handle = parent_image;
- *image_handle = info;
-
+ *image_handle = obj->handle;
return EFI_EXIT(EFI_SUCCESS);
+failure:
+ free(info);
+ efi_delete_handle(obj);
+ return EFI_EXIT(ret);
}
/*
unsigned long *exit_data_size,
s16 **exit_data)
{
- ulong (*entry)(void *image_handle, struct efi_system_table *st);
+ ulong (*entry)(efi_handle_t image_handle, struct efi_system_table *st);
struct efi_loaded_image *info = image_handle;
+ efi_status_t ret;
EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data);
entry = info->reserved;
/* call the image! */
if (setjmp(&info->exit_jmp)) {
- /* We returned from the child image */
+ /*
+ * We called the entry point of the child image with EFI_CALL
+ * in the lines below. The child image called the Exit() boot
+ * service efi_exit() which executed the long jump that brought
+ * us to the current line. This implies that the second half
+ * of the EFI_CALL macro has not been executed.
+ */
+#ifdef CONFIG_ARM
+ /*
+ * efi_exit() called efi_restore_gd(). We have to undo this
+ * otherwise __efi_entry_check() will put the wrong value into
+ * app_gd.
+ */
+ gd = app_gd;
+#endif
+ /*
+ * To get ready to call EFI_EXIT below we have to execute the
+ * missed out steps of EFI_CALL.
+ */
+ assert(__efi_entry_check());
+ debug("%sEFI: %lu returned by started image\n",
+ __efi_nesting_dec(),
+ (unsigned long)((uintptr_t)info->exit_status &
+ ~EFI_ERROR_MASK));
return EFI_EXIT(info->exit_status);
}
- __efi_nesting_dec();
- __efi_exit_check();
- entry(image_handle, &systab);
- __efi_entry_check();
- __efi_nesting_inc();
+ ret = EFI_CALL(entry(image_handle, &systab));
/* Should usually never get here */
- return EFI_EXIT(EFI_SUCCESS);
+ return EFI_EXIT(ret);
}
/*
efi_status_t exit_status, unsigned long exit_data_size,
int16_t *exit_data)
{
+ /*
+ * We require that the handle points to the original loaded
+ * image protocol interface.
+ *
+ * For getting the longjmp address this is safer than locating
+ * the protocol because the protocol may have been reinstalled
+ * pointing to another memory location.
+ *
+ * TODO: We should call the unload procedure of the loaded
+ * image protocol.
+ */
struct efi_loaded_image *loaded_image_info = (void*)image_handle;
EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status,
exit_data_size, exit_data);
/* Make sure entry/exit counts for EFI world cross-overs match */
- __efi_exit_check();
+ EFI_EXIT(exit_status);
/*
* But longjmp out with the U-Boot gd, not the application's, as
* @image_handle handle of the image to be unloaded
* @return status code
*/
-static efi_status_t EFIAPI efi_unload_image(void *image_handle)
+static efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle)
{
struct efi_object *efiobj;
* @map_key key of the memory map
* @return status code
*/
-static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
+static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
unsigned long map_key)
{
int i;
return EFI_EXIT(efi_set_watchdog(timeout));
}
-/*
- * Connect a controller to a driver.
- *
- * This function implements the ConnectController service.
- * See the Unified Extensible Firmware Interface (UEFI) specification
- * for details.
- *
- * @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
- */
-static efi_status_t EFIAPI efi_connect_controller(
- efi_handle_t controller_handle,
- efi_handle_t *driver_image_handle,
- struct efi_device_path *remain_device_path,
- bool recursive)
-{
- EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle,
- remain_device_path, recursive);
- return EFI_EXIT(EFI_NOT_FOUND);
-}
-
-/*
- * Disconnect a controller from a driver.
- *
- * 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
- */
-static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle,
- void *driver_image_handle,
- void *child_handle)
-{
- EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle,
- child_handle);
- return EFI_EXIT(EFI_INVALID_PARAMETER);
-}
-
/*
* Close a protocol.
*
* @controller_handle handle of the controller
* @return status code
*/
-static efi_status_t EFIAPI efi_close_protocol(void *handle,
+static efi_status_t EFIAPI efi_close_protocol(efi_handle_t handle,
const efi_guid_t *protocol,
- void *agent_handle,
- void *controller_handle)
+ efi_handle_t agent_handle,
+ efi_handle_t controller_handle)
{
+ struct efi_handler *handler;
+ struct efi_open_protocol_info_item *item;
+ struct efi_open_protocol_info_item *pos;
+ efi_status_t r;
+
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, agent_handle,
controller_handle);
- return EFI_EXIT(EFI_NOT_FOUND);
+
+ if (!agent_handle) {
+ r = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ r = efi_search_protocol(handle, protocol, &handler);
+ if (r != EFI_SUCCESS)
+ goto out;
+
+ r = EFI_NOT_FOUND;
+ list_for_each_entry_safe(item, pos, &handler->open_infos, link) {
+ if (item->info.agent_handle == agent_handle &&
+ item->info.controller_handle == controller_handle) {
+ efi_delete_open_info(item);
+ r = EFI_SUCCESS;
+ break;
+ }
+ }
+out:
+ return EFI_EXIT(r);
}
/*
static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle,
const efi_guid_t *protocol,
struct efi_open_protocol_info_entry **entry_buffer,
- unsigned long *entry_count)
+ efi_uintn_t *entry_count)
{
+ unsigned long buffer_size;
+ unsigned long count;
+ struct efi_handler *handler;
+ struct efi_open_protocol_info_item *item;
+ efi_status_t r;
+
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, entry_buffer,
entry_count);
- return EFI_EXIT(EFI_NOT_FOUND);
+
+ /* Check parameters */
+ if (!entry_buffer) {
+ r = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ r = efi_search_protocol(handle, protocol, &handler);
+ if (r != EFI_SUCCESS)
+ goto out;
+
+ /* Count entries */
+ count = 0;
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.open_count)
+ ++count;
+ }
+ *entry_count = count;
+ *entry_buffer = NULL;
+ if (!count) {
+ r = EFI_SUCCESS;
+ goto out;
+ }
+
+ /* Copy entries */
+ buffer_size = count * sizeof(struct efi_open_protocol_info_entry);
+ r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size,
+ (void **)entry_buffer);
+ if (r != EFI_SUCCESS)
+ goto out;
+ list_for_each_entry_reverse(item, &handler->open_infos, link) {
+ if (item->info.open_count)
+ (*entry_buffer)[--count] = item->info;
+ }
+out:
+ return EFI_EXIT(r);
}
/*
* @protocol_buffer_count number of entries in the buffer
* @return status code
*/
-static efi_status_t EFIAPI efi_protocols_per_handle(void *handle,
- efi_guid_t ***protocol_buffer,
- unsigned long *protocol_buffer_count)
+static efi_status_t EFIAPI efi_protocols_per_handle(
+ efi_handle_t handle, efi_guid_t ***protocol_buffer,
+ efi_uintn_t *protocol_buffer_count)
{
unsigned long buffer_size;
struct efi_object *efiobj;
- unsigned long i, j;
- struct list_head *lhandle;
+ struct list_head *protocol_handle;
efi_status_t r;
EFI_ENTRY("%p, %p, %p", handle, protocol_buffer,
*protocol_buffer = NULL;
*protocol_buffer_count = 0;
- list_for_each(lhandle, &efi_obj_list) {
- efiobj = list_entry(lhandle, struct efi_object, link);
- if (efiobj->handle != handle)
- continue;
+ efiobj = efi_search_obj(handle);
+ if (!efiobj)
+ return EFI_EXIT(EFI_INVALID_PARAMETER);
- /* Count protocols */
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
- if (efiobj->protocols[i].guid)
- ++*protocol_buffer_count;
- }
- /* Copy guids */
- if (*protocol_buffer_count) {
- buffer_size = sizeof(efi_guid_t *) *
- *protocol_buffer_count;
- r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
- buffer_size,
- (void **)protocol_buffer);
- if (r != EFI_SUCCESS)
- return EFI_EXIT(r);
- j = 0;
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) {
- if (efiobj->protocols[i].guid) {
- (*protocol_buffer)[j] = (void *)
- efiobj->protocols[i].guid;
- ++j;
- }
- }
+ /* Count protocols */
+ list_for_each(protocol_handle, &efiobj->protocols) {
+ ++*protocol_buffer_count;
+ }
+
+ /* Copy guids */
+ if (*protocol_buffer_count) {
+ size_t j = 0;
+
+ buffer_size = sizeof(efi_guid_t *) * *protocol_buffer_count;
+ r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size,
+ (void **)protocol_buffer);
+ if (r != EFI_SUCCESS)
+ return EFI_EXIT(r);
+ list_for_each(protocol_handle, &efiobj->protocols) {
+ struct efi_handler *protocol;
+
+ protocol = list_entry(protocol_handle,
+ struct efi_handler, link);
+ (*protocol_buffer)[j] = (void *)protocol->guid;
+ ++j;
}
- break;
}
return EFI_EXIT(EFI_SUCCESS);
static efi_status_t EFIAPI efi_locate_handle_buffer(
enum efi_locate_search_type search_type,
const efi_guid_t *protocol, void *search_key,
- unsigned long *no_handles, efi_handle_t **buffer)
+ efi_uintn_t *no_handles, efi_handle_t **buffer)
{
efi_status_t r;
- unsigned long buffer_size = 0;
+ efi_uintn_t buffer_size = 0;
EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key,
no_handles, buffer);
r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
*buffer);
if (r == EFI_SUCCESS)
- *no_handles = buffer_size / sizeof(void *);
+ *no_handles = buffer_size / sizeof(efi_handle_t);
out:
return EFI_EXIT(r);
}
void **protocol_interface)
{
struct list_head *lhandle;
- int i;
+ efi_status_t ret;
EFI_ENTRY("%pUl, %p, %p", protocol, registration, protocol_interface);
if (!protocol || !protocol_interface)
return EFI_EXIT(EFI_INVALID_PARAMETER);
- EFI_PRINT_GUID("protocol", protocol);
-
list_for_each(lhandle, &efi_obj_list) {
struct efi_object *efiobj;
+ struct efi_handler *handler;
efiobj = list_entry(lhandle, struct efi_object, link);
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
- struct efi_handler *handler = &efiobj->protocols[i];
-
- if (!handler->guid)
- continue;
- if (!guidcmp(handler->guid, protocol)) {
- *protocol_interface =
- handler->protocol_interface;
- return EFI_EXIT(EFI_SUCCESS);
- }
+
+ ret = efi_search_protocol(efiobj->handle, protocol, &handler);
+ if (ret == EFI_SUCCESS) {
+ *protocol_interface = handler->protocol_interface;
+ return EFI_EXIT(EFI_SUCCESS);
}
}
*protocol_interface = NULL;
return EFI_EXIT(EFI_NOT_FOUND);
}
+/*
+ * Get the device path and handle of an device implementing a protocol.
+ *
+ * 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
+ */
+static efi_status_t EFIAPI efi_locate_device_path(
+ const efi_guid_t *protocol,
+ struct efi_device_path **device_path,
+ efi_handle_t *device)
+{
+ struct efi_device_path *dp;
+ size_t i;
+ struct efi_handler *handler;
+ efi_handle_t *handles;
+ size_t len, len_dp;
+ size_t len_best = 0;
+ efi_uintn_t no_handles;
+ u8 *remainder;
+ efi_status_t ret;
+
+ EFI_ENTRY("%pUl, %p, %p", protocol, device_path, device);
+
+ if (!protocol || !device_path || !*device_path || !device) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ /* Find end of device path */
+ len = efi_dp_size(*device_path);
+
+ /* Get all handles implementing the protocol */
+ ret = EFI_CALL(efi_locate_handle_buffer(BY_PROTOCOL, protocol, NULL,
+ &no_handles, &handles));
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ for (i = 0; i < no_handles; ++i) {
+ /* Find the device path protocol */
+ ret = efi_search_protocol(handles[i], &efi_guid_device_path,
+ &handler);
+ if (ret != EFI_SUCCESS)
+ continue;
+ dp = (struct efi_device_path *)handler->protocol_interface;
+ len_dp = efi_dp_size(dp);
+ /*
+ * This handle can only be a better fit
+ * if its device path length is longer than the best fit and
+ * if its device path length is shorter of equal the searched
+ * device path.
+ */
+ if (len_dp <= len_best || len_dp > len)
+ continue;
+ /* Check if dp is a subpath of device_path */
+ if (memcmp(*device_path, dp, len_dp))
+ continue;
+ *device = handles[i];
+ len_best = len_dp;
+ }
+ if (len_best) {
+ remainder = (u8 *)*device_path + len_best;
+ *device_path = (struct efi_device_path *)remainder;
+ ret = EFI_SUCCESS;
+ } else {
+ ret = EFI_NOT_FOUND;
+ }
+out:
+ return EFI_EXIT(ret);
+}
+
/*
* Install multiple protocol interfaces.
*
if (r == EFI_SUCCESS)
return EFI_EXIT(r);
- /* If an error occured undo all changes. */
+ /* If an error occurred undo all changes. */
va_start(argptr, handle);
for (; i; --i) {
protocol = va_arg(argptr, efi_guid_t*);
void *handle, ...)
{
EFI_ENTRY("%p", handle);
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+
+ va_list argptr;
+ const efi_guid_t *protocol;
+ void *protocol_interface;
+ efi_status_t r = EFI_SUCCESS;
+ size_t i = 0;
+
+ if (!handle)
+ return EFI_EXIT(EFI_INVALID_PARAMETER);
+
+ va_start(argptr, handle);
+ for (;;) {
+ protocol = va_arg(argptr, efi_guid_t*);
+ if (!protocol)
+ break;
+ protocol_interface = va_arg(argptr, void*);
+ r = EFI_CALL(efi_uninstall_protocol_interface(
+ handle, protocol,
+ protocol_interface));
+ if (r != EFI_SUCCESS)
+ break;
+ i++;
+ }
+ va_end(argptr);
+ if (r == EFI_SUCCESS)
+ return EFI_EXIT(r);
+
+ /* If an error occurred undo all changes. */
+ va_start(argptr, handle);
+ for (; i; --i) {
+ protocol = va_arg(argptr, efi_guid_t*);
+ protocol_interface = va_arg(argptr, void*);
+ EFI_CALL(efi_install_protocol_interface(&handle, protocol,
+ EFI_NATIVE_INTERFACE,
+ protocol_interface));
+ }
+ va_end(argptr);
+
+ return EFI_EXIT(r);
}
/*
EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * 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
+ * @return status code
+ */
+static efi_status_t efi_protocol_open(
+ struct efi_handler *handler,
+ void **protocol_interface, void *agent_handle,
+ void *controller_handle, uint32_t attributes)
+{
+ struct efi_open_protocol_info_item *item;
+ struct efi_open_protocol_info_entry *match = NULL;
+ bool opened_by_driver = false;
+ bool opened_exclusive = false;
+
+ /* If there is no agent, only return the interface */
+ if (!agent_handle)
+ goto out;
+
+ /* For TEST_PROTOCOL ignore interface attribute */
+ if (attributes != EFI_OPEN_PROTOCOL_TEST_PROTOCOL)
+ *protocol_interface = NULL;
+
+ /*
+ * Check if the protocol is already opened by a driver with the same
+ * attributes or opened exclusively
+ */
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.agent_handle == agent_handle) {
+ if ((attributes & EFI_OPEN_PROTOCOL_BY_DRIVER) &&
+ (item->info.attributes == attributes))
+ return EFI_ALREADY_STARTED;
+ }
+ if (item->info.attributes & EFI_OPEN_PROTOCOL_EXCLUSIVE)
+ opened_exclusive = true;
+ }
+
+ /* Only one controller can open the protocol exclusively */
+ if (opened_exclusive && attributes &
+ (EFI_OPEN_PROTOCOL_EXCLUSIVE | EFI_OPEN_PROTOCOL_BY_DRIVER))
+ return EFI_ACCESS_DENIED;
+
+ /* Prepare exclusive opening */
+ if (attributes & EFI_OPEN_PROTOCOL_EXCLUSIVE) {
+ /* Try to disconnect controllers */
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.attributes ==
+ EFI_OPEN_PROTOCOL_BY_DRIVER)
+ EFI_CALL(efi_disconnect_controller(
+ item->info.controller_handle,
+ item->info.agent_handle,
+ NULL));
+ }
+ opened_by_driver = false;
+ /* Check if all controllers are disconnected */
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.attributes & EFI_OPEN_PROTOCOL_BY_DRIVER)
+ opened_by_driver = true;
+ }
+ /* Only one controller can be conncected */
+ if (opened_by_driver)
+ return EFI_ACCESS_DENIED;
+ }
+
+ /* Find existing entry */
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.agent_handle == agent_handle &&
+ item->info.controller_handle == controller_handle)
+ match = &item->info;
+ }
+ /* None found, create one */
+ if (!match) {
+ match = efi_create_open_info(handler);
+ if (!match)
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ match->agent_handle = agent_handle;
+ match->controller_handle = controller_handle;
+ match->attributes = attributes;
+ match->open_count++;
+
+out:
+ /* For TEST_PROTOCOL ignore interface attribute. */
+ if (attributes != EFI_OPEN_PROTOCOL_TEST_PROTOCOL)
+ *protocol_interface = handler->protocol_interface;
+
+ return EFI_SUCCESS;
+}
+
/*
* Open protocol interface on a handle.
*
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
- struct list_head *lhandle;
- int i;
+ struct efi_handler *handler;
efi_status_t r = EFI_INVALID_PARAMETER;
EFI_ENTRY("%p, %pUl, %p, %p, %p, 0x%x", handle, protocol,
goto out;
}
- EFI_PRINT_GUID("protocol", protocol);
-
switch (attributes) {
case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL:
case EFI_OPEN_PROTOCOL_GET_PROTOCOL:
case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER:
if (controller_handle == handle)
goto out;
+ /* fall-through */
case EFI_OPEN_PROTOCOL_BY_DRIVER:
case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE:
- if (controller_handle == NULL)
+ /* Check that the controller handle is valid */
+ if (!efi_search_obj(controller_handle))
goto out;
+ /* fall-through */
case EFI_OPEN_PROTOCOL_EXCLUSIVE:
- if (agent_handle == NULL)
+ /* Check that the agent handle is valid */
+ if (!efi_search_obj(agent_handle))
goto out;
break;
default:
goto out;
}
- list_for_each(lhandle, &efi_obj_list) {
- struct efi_object *efiobj;
- efiobj = list_entry(lhandle, struct efi_object, link);
-
- if (efiobj->handle != handle)
- continue;
-
- for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
- struct efi_handler *handler = &efiobj->protocols[i];
- const efi_guid_t *hprotocol = handler->guid;
- if (!hprotocol)
- continue;
- if (!guidcmp(hprotocol, protocol)) {
- if (attributes !=
- EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {
- *protocol_interface =
- handler->protocol_interface;
- }
- r = EFI_SUCCESS;
- goto out;
- }
- }
- goto unsupported;
- }
+ r = efi_search_protocol(handle, protocol, &handler);
+ if (r != EFI_SUCCESS)
+ goto out;
-unsupported:
- r = EFI_UNSUPPORTED;
+ r = efi_protocol_open(handler, protocol_interface, agent_handle,
+ controller_handle, attributes);
out:
return EFI_EXIT(r);
}
* @protocol_interface interface implementing the protocol
* @return status code
*/
-static efi_status_t EFIAPI efi_handle_protocol(void *handle,
+static efi_status_t EFIAPI efi_handle_protocol(efi_handle_t handle,
const efi_guid_t *protocol,
void **protocol_interface)
{
NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
}
+static efi_status_t efi_bind_controller(
+ efi_handle_t controller_handle,
+ efi_handle_t driver_image_handle,
+ struct efi_device_path *remain_device_path)
+{
+ struct efi_driver_binding_protocol *binding_protocol;
+ efi_status_t r;
+
+ r = EFI_CALL(efi_open_protocol(driver_image_handle,
+ &efi_guid_driver_binding_protocol,
+ (void **)&binding_protocol,
+ driver_image_handle, NULL,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL));
+ if (r != EFI_SUCCESS)
+ return r;
+ r = EFI_CALL(binding_protocol->supported(binding_protocol,
+ controller_handle,
+ remain_device_path));
+ if (r == EFI_SUCCESS)
+ r = EFI_CALL(binding_protocol->start(binding_protocol,
+ controller_handle,
+ remain_device_path));
+ EFI_CALL(efi_close_protocol(driver_image_handle,
+ &efi_guid_driver_binding_protocol,
+ driver_image_handle, NULL));
+ return r;
+}
+
+static efi_status_t efi_connect_single_controller(
+ efi_handle_t controller_handle,
+ efi_handle_t *driver_image_handle,
+ struct efi_device_path *remain_device_path)
+{
+ efi_handle_t *buffer;
+ size_t count;
+ size_t i;
+ efi_status_t r;
+ size_t connected = 0;
+
+ /* Get buffer with all handles with driver binding protocol */
+ r = EFI_CALL(efi_locate_handle_buffer(BY_PROTOCOL,
+ &efi_guid_driver_binding_protocol,
+ NULL, &count, &buffer));
+ if (r != EFI_SUCCESS)
+ return r;
+
+ /* Context Override */
+ if (driver_image_handle) {
+ for (; *driver_image_handle; ++driver_image_handle) {
+ for (i = 0; i < count; ++i) {
+ if (buffer[i] == *driver_image_handle) {
+ buffer[i] = NULL;
+ r = efi_bind_controller(
+ controller_handle,
+ *driver_image_handle,
+ remain_device_path);
+ /*
+ * For drivers that do not support the
+ * controller or are already connected
+ * we receive an error code here.
+ */
+ if (r == EFI_SUCCESS)
+ ++connected;
+ }
+ }
+ }
+ }
+
+ /*
+ * TODO: Some overrides are not yet implemented:
+ * - Platform Driver Override
+ * - Driver Family Override Search
+ * - Bus Specific Driver Override
+ */
+
+ /* Driver Binding Search */
+ for (i = 0; i < count; ++i) {
+ if (buffer[i]) {
+ r = efi_bind_controller(controller_handle,
+ buffer[i],
+ remain_device_path);
+ if (r == EFI_SUCCESS)
+ ++connected;
+ }
+ }
+
+ efi_free_pool(buffer);
+ if (!connected)
+ return EFI_NOT_FOUND;
+ return EFI_SUCCESS;
+}
+
+/*
+ * Connect a controller to a driver.
+ *
+ * This function implements the ConnectController service.
+ * 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
+ */
+static efi_status_t EFIAPI efi_connect_controller(
+ efi_handle_t controller_handle,
+ efi_handle_t *driver_image_handle,
+ struct efi_device_path *remain_device_path,
+ bool recursive)
+{
+ efi_status_t r;
+ efi_status_t ret = EFI_NOT_FOUND;
+ struct efi_object *efiobj;
+
+ EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle,
+ remain_device_path, recursive);
+
+ efiobj = efi_search_obj(controller_handle);
+ if (!efiobj) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ r = efi_connect_single_controller(controller_handle,
+ driver_image_handle,
+ remain_device_path);
+ if (r == EFI_SUCCESS)
+ ret = EFI_SUCCESS;
+ if (recursive) {
+ struct efi_handler *handler;
+ struct efi_open_protocol_info_item *item;
+
+ list_for_each_entry(handler, &efiobj->protocols, link) {
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.attributes &
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {
+ r = EFI_CALL(efi_connect_controller(
+ item->info.controller_handle,
+ driver_image_handle,
+ remain_device_path,
+ recursive));
+ if (r == EFI_SUCCESS)
+ ret = EFI_SUCCESS;
+ }
+ }
+ }
+ }
+ /* Check for child controller specified by end node */
+ if (ret != EFI_SUCCESS && remain_device_path &&
+ remain_device_path->type == DEVICE_PATH_TYPE_END)
+ ret = EFI_SUCCESS;
+out:
+ return EFI_EXIT(ret);
+}
+
+/*
+ * Get all child controllers associated to a driver.
+ * 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
+ */
+static efi_status_t efi_get_child_controllers(
+ struct efi_object *efiobj,
+ efi_handle_t driver_handle,
+ efi_uintn_t *number_of_children,
+ efi_handle_t **child_handle_buffer)
+{
+ struct efi_handler *handler;
+ struct efi_open_protocol_info_item *item;
+ efi_uintn_t count = 0, i;
+ bool duplicate;
+
+ /* Count all child controller associations */
+ list_for_each_entry(handler, &efiobj->protocols, link) {
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.agent_handle == driver_handle &&
+ item->info.attributes &
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER)
+ ++count;
+ }
+ }
+ /*
+ * Create buffer. In case of duplicate child controller assignments
+ * the buffer will be too large. But that does not harm.
+ */
+ *number_of_children = 0;
+ *child_handle_buffer = calloc(count, sizeof(efi_handle_t));
+ if (!*child_handle_buffer)
+ return EFI_OUT_OF_RESOURCES;
+ /* Copy unique child handles */
+ list_for_each_entry(handler, &efiobj->protocols, link) {
+ list_for_each_entry(item, &handler->open_infos, link) {
+ if (item->info.agent_handle == driver_handle &&
+ item->info.attributes &
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) {
+ /* Check this is a new child controller */
+ duplicate = false;
+ for (i = 0; i < *number_of_children; ++i) {
+ if ((*child_handle_buffer)[i] ==
+ item->info.controller_handle)
+ duplicate = true;
+ }
+ /* Copy handle to buffer */
+ if (!duplicate) {
+ i = (*number_of_children)++;
+ (*child_handle_buffer)[i] =
+ item->info.controller_handle;
+ }
+ }
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+/*
+ * Disconnect a controller from a driver.
+ *
+ * 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
+ */
+static efi_status_t EFIAPI efi_disconnect_controller(
+ efi_handle_t controller_handle,
+ efi_handle_t driver_image_handle,
+ efi_handle_t child_handle)
+{
+ struct efi_driver_binding_protocol *binding_protocol;
+ efi_handle_t *child_handle_buffer = NULL;
+ size_t number_of_children = 0;
+ efi_status_t r;
+ size_t stop_count = 0;
+ struct efi_object *efiobj;
+
+ EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle,
+ child_handle);
+
+ efiobj = efi_search_obj(controller_handle);
+ if (!efiobj) {
+ r = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ if (child_handle && !efi_search_obj(child_handle)) {
+ r = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ /* If no driver handle is supplied, disconnect all drivers */
+ if (!driver_image_handle) {
+ r = efi_disconnect_all_drivers(efiobj, NULL, child_handle);
+ goto out;
+ }
+
+ /* Create list of child handles */
+ if (child_handle) {
+ number_of_children = 1;
+ child_handle_buffer = &child_handle;
+ } else {
+ efi_get_child_controllers(efiobj,
+ driver_image_handle,
+ &number_of_children,
+ &child_handle_buffer);
+ }
+
+ /* Get the driver binding protocol */
+ r = EFI_CALL(efi_open_protocol(driver_image_handle,
+ &efi_guid_driver_binding_protocol,
+ (void **)&binding_protocol,
+ driver_image_handle, NULL,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL));
+ if (r != EFI_SUCCESS)
+ goto out;
+ /* Remove the children */
+ if (number_of_children) {
+ r = EFI_CALL(binding_protocol->stop(binding_protocol,
+ controller_handle,
+ number_of_children,
+ child_handle_buffer));
+ if (r == EFI_SUCCESS)
+ ++stop_count;
+ }
+ /* Remove the driver */
+ if (!child_handle)
+ r = EFI_CALL(binding_protocol->stop(binding_protocol,
+ controller_handle,
+ 0, NULL));
+ if (r == EFI_SUCCESS)
+ ++stop_count;
+ EFI_CALL(efi_close_protocol(driver_image_handle,
+ &efi_guid_driver_binding_protocol,
+ driver_image_handle, NULL));
+
+ if (stop_count)
+ r = EFI_SUCCESS;
+ else
+ r = EFI_NOT_FOUND;
+out:
+ if (!child_handle)
+ free(child_handle_buffer);
+ return EFI_EXIT(r);
+}
+
static const struct efi_boot_services efi_boot_services = {
.hdr = {
.headersize = sizeof(struct efi_table_hdr),
};
-static uint16_t __efi_runtime_data firmware_vendor[] =
- { 'D','a','s',' ','U','-','b','o','o','t',0 };
+static uint16_t __efi_runtime_data firmware_vendor[] = L"Das U-Boot";
struct efi_system_table __efi_runtime_data systab = {
.hdr = {
projects / u-boot / blobdiff