#include <linux/libfdt_env.h>
#include <u-boot/crc.h>
#include <bootm.h>
+#include <pe.h>
#include <watchdog.h>
DECLARE_GLOBAL_DATA_PTR;
/* List of all events */
LIST_HEAD(efi_events);
+/* List of all events registered by RegisterProtocolNotify() */
+LIST_HEAD(efi_register_notify_events);
+
/* Handle of the currently executing image */
static efi_handle_t current_image;
/* Check TPL */
if (check_tpl && efi_tpl >= event->notify_tpl)
return;
+ event->is_queued = false;
EFI_CALL_VOID(event->notify_function(event,
event->notify_context));
+ } else {
+ event->is_queued = false;
}
- event->is_queued = false;
}
/**
if (evt->is_queued)
efi_queue_event(evt, check_tpl);
}
- } else if (!event->is_signaled) {
+ } else {
event->is_signaled = true;
if (event->type & EVT_NOTIFY_SIGNAL)
efi_queue_event(event, check_tpl);
EFI_ENTRY("0x%zx", new_tpl);
if (new_tpl < efi_tpl)
- debug("WARNING: new_tpl < current_tpl in %s\n", __func__);
+ EFI_PRINT("WARNING: new_tpl < current_tpl in %s\n", __func__);
efi_tpl = new_tpl;
if (efi_tpl > TPL_HIGH_LEVEL)
efi_tpl = TPL_HIGH_LEVEL;
EFI_ENTRY("0x%zx", old_tpl);
if (old_tpl > efi_tpl)
- debug("WARNING: old_tpl > current_tpl in %s\n", __func__);
+ EFI_PRINT("WARNING: old_tpl > current_tpl in %s\n", __func__);
efi_tpl = old_tpl;
if (efi_tpl > TPL_HIGH_LEVEL)
efi_tpl = TPL_HIGH_LEVEL;
}
/**
- * efi_add_handle() - add a new object to the object list
- * @obj: object to be added
+ * efi_add_handle() - add a new handle to the object list
*
- * The protocols list is initialized. The object handle is set.
+ * @handle: handle to be added
+ *
+ * The protocols list is initialized. The handle is added to the list of known
+ * UEFI objects.
*/
void efi_add_handle(efi_handle_t handle)
{
ret = efi_search_protocol(handle, protocol, &handler);
if (ret != EFI_SUCCESS)
return ret;
- if (guidcmp(handler->guid, protocol))
- return EFI_INVALID_PARAMETER;
if (handler->protocol_interface != protocol_interface)
- return EFI_INVALID_PARAMETER;
+ return EFI_NOT_FOUND;
list_del(&handler->link);
free(handler);
return EFI_SUCCESS;
efi_guid_t *event_group,
struct efi_event **event)
{
+ efi_status_t ret;
+
EFI_ENTRY("%d, 0x%zx, %p, %p, %pUl", type, notify_tpl, notify_function,
notify_context, event_group);
- return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function,
- notify_context, event_group, event));
+
+ /*
+ * The allowable input parameters are the same as in CreateEvent()
+ * except for the following two disallowed event types.
+ */
+ switch (type) {
+ case EVT_SIGNAL_EXIT_BOOT_SERVICES:
+ case EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE:
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ ret = efi_create_event(type, notify_tpl, notify_function,
+ notify_context, event_group, event);
+out:
+ return EFI_EXIT(ret);
}
/**
*/
static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
{
+ struct efi_register_notify_event *item, *next;
+
EFI_ENTRY("%p", event);
if (efi_is_event(event) != EFI_SUCCESS)
return EFI_EXIT(EFI_INVALID_PARAMETER);
+
+ /* Remove protocol notify registrations for the event */
+ list_for_each_entry_safe(item, next, &efi_register_notify_events,
+ link) {
+ if (event == item->event) {
+ list_del(&item->link);
+ free(item);
+ }
+ }
+
list_del(&event->link);
free(event);
return EFI_EXIT(EFI_SUCCESS);
{
struct efi_object *efiobj;
+ if (!handle)
+ return NULL;
+
list_for_each_entry(efiobj, &efi_obj_list, link) {
if (efiobj == handle)
return efiobj;
}
-
return NULL;
}
struct efi_object *efiobj;
struct efi_handler *handler;
efi_status_t ret;
+ struct efi_register_notify_event *event;
efiobj = efi_search_obj(handle);
if (!efiobj)
handler->protocol_interface = protocol_interface;
INIT_LIST_HEAD(&handler->open_infos);
list_add_tail(&handler->link, &efiobj->protocols);
+
+ /* Notify registered events */
+ list_for_each_entry(event, &efi_register_notify_events, link) {
+ if (!guidcmp(protocol, &event->protocol))
+ efi_signal_event(event->event, true);
+ }
+
if (!guidcmp(&efi_guid_device_path, protocol))
EFI_PRINT("installed device path '%pD'\n", protocol_interface);
return EFI_SUCCESS;
r = efi_create_handle(handle);
if (r != EFI_SUCCESS)
goto out;
- debug("%sEFI: new handle %p\n", indent_string(nesting_level),
- *handle);
+ EFI_PRINT("new handle %p\n", *handle);
} else {
- debug("%sEFI: handle %p\n", indent_string(nesting_level),
- *handle);
+ EFI_PRINT("handle %p\n", *handle);
}
/* Add new protocol */
r = efi_add_protocol(*handle, protocol, protocol_interface);
struct efi_event *event,
void **registration)
{
+ struct efi_register_notify_event *item;
+ efi_status_t ret = EFI_SUCCESS;
+
EFI_ENTRY("%pUl, %p, %p", protocol, event, registration);
- return EFI_EXIT(EFI_OUT_OF_RESOURCES);
+
+ if (!protocol || !event || !registration) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+
+ item = calloc(1, sizeof(struct efi_register_notify_event));
+ if (!item) {
+ ret = EFI_OUT_OF_RESOURCES;
+ goto out;
+ }
+
+ item->event = event;
+ memcpy(&item->protocol, protocol, sizeof(efi_guid_t));
+
+ list_add_tail(&item->link, &efi_register_notify_events);
+
+ *registration = item;
+out:
+ return EFI_EXIT(ret);
}
/**
* 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,
- efi_handle_t handle)
+ const efi_guid_t *protocol, efi_handle_t handle)
{
efi_status_t ret;
case ALL_HANDLES:
return 0;
case BY_REGISTER_NOTIFY:
- /* TODO: RegisterProtocolNotify is not implemented yet */
- return -1;
case BY_PROTOCOL:
ret = efi_search_protocol(handle, protocol, NULL);
return (ret != EFI_SUCCESS);
/**
* 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
+ *
+ * @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.
{
struct efi_object *efiobj;
efi_uintn_t size = 0;
+ struct efi_register_notify_event *item, *event = NULL;
/* Check parameters */
switch (search_type) {
case BY_REGISTER_NOTIFY:
if (!search_key)
return EFI_INVALID_PARAMETER;
- /* RegisterProtocolNotify is not implemented yet */
- return EFI_UNSUPPORTED;
+ /* Check that the registration key is valid */
+ list_for_each_entry(item, &efi_register_notify_events, link) {
+ if (item ==
+ (struct efi_register_notify_event *)search_key) {
+ event = item;
+ break;
+ }
+ }
+ if (!event)
+ return EFI_INVALID_PARAMETER;
+
+ protocol = &event->protocol;
+ break;
case BY_PROTOCOL:
if (!protocol)
return EFI_INVALID_PARAMETER;
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_entry(efiobj, &efi_obj_list, link) {
- if (!efi_search(search_type, protocol, search_key, efiobj))
+ if (!efi_search(search_type, protocol, efiobj))
size += sizeof(void *);
}
+ if (size == 0)
+ return EFI_NOT_FOUND;
+
+ if (!buffer_size)
+ return EFI_INVALID_PARAMETER;
+
if (*buffer_size < size) {
*buffer_size = size;
return EFI_BUFFER_TOO_SMALL;
}
*buffer_size = size;
- if (size == 0)
- return EFI_NOT_FOUND;
+
+ /* The buffer size is sufficient but there is no buffer */
+ if (!buffer)
+ return EFI_INVALID_PARAMETER;
/* Then fill the array */
list_for_each_entry(efiobj, &efi_obj_list, link) {
- if (!efi_search(search_type, protocol, search_key, efiobj))
+ if (!efi_search(search_type, protocol, efiobj))
*buffer++ = efiobj;
}
free(info);
return EFI_OUT_OF_RESOURCES;
}
+ obj->header.type = EFI_OBJECT_TYPE_LOADED_IMAGE;
/* Add internal object to object list */
efi_add_handle(&obj->header);
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) {
+ if (!image_handle || !efi_search_obj(parent_image)) {
ret = EFI_INVALID_PARAMETER;
goto error;
}
ret = EFI_NOT_FOUND;
goto error;
}
+ /* The parent image handle must refer to a loaded image */
+ if (!parent_image->type) {
+ ret = EFI_INVALID_PARAMETER;
+ goto error;
+ }
if (!source_buffer) {
ret = efi_load_image_from_path(file_path, &dest_buffer,
if (ret != EFI_SUCCESS)
goto error;
} else {
+ if (!source_size) {
+ ret = EFI_LOAD_ERROR;
+ goto error;
+ }
dest_buffer = source_buffer;
}
/* split file_path which contains both the device and file parts */
return EFI_EXIT(ret);
}
-/**
- * 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.
- *
- * Return: status code
- */
-efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle)
-{
- struct efi_object *efiobj;
-
- EFI_ENTRY("%p", image_handle);
- efiobj = efi_search_obj(image_handle);
- if (efiobj)
- list_del(&efiobj->link);
-
- return EFI_EXIT(EFI_SUCCESS);
-}
-
/**
* efi_exit_caches() - fix up caches for EFI payloads if necessary
*/
* Return: status code
*/
static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
- unsigned long map_key)
+ efi_uintn_t map_key)
{
struct efi_event *evt;
- EFI_ENTRY("%p, %ld", image_handle, map_key);
+ EFI_ENTRY("%p, %zx", image_handle, map_key);
/* Check that the caller has read the current memory map */
if (map_key != efi_memory_map_key)
static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count)
{
static uint64_t mono;
+ efi_status_t ret;
EFI_ENTRY("%p", count);
+ if (!count) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
*count = mono++;
- return EFI_EXIT(EFI_SUCCESS);
+ ret = EFI_SUCCESS;
+out:
+ return EFI_EXIT(ret);
}
/**
EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, agent_handle,
controller_handle);
- if (!agent_handle) {
+ if (!efi_search_obj(agent_handle) ||
+ (controller_handle && !efi_search_obj(controller_handle))) {
r = EFI_INVALID_PARAMETER;
goto out;
}
EFI_ENTRY("%pUl, %p, %p", protocol, device_path, device);
- if (!protocol || !device_path || !*device_path || !device) {
+ if (!protocol || !device_path || !*device_path) {
ret = EFI_INVALID_PARAMETER;
goto out;
}
/* Check if dp is a subpath of device_path */
if (memcmp(*device_path, dp, len_dp))
continue;
+ if (!device) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
*device = handles[i];
len_best = len_dp;
}
efi_va_list argptr;
const efi_guid_t *protocol;
void *protocol_interface;
+ efi_handle_t old_handle;
efi_status_t r = EFI_SUCCESS;
int i = 0;
if (!protocol)
break;
protocol_interface = efi_va_arg(argptr, void*);
+ /* Check that a device path has not been installed before */
+ if (!guidcmp(protocol, &efi_guid_device_path)) {
+ struct efi_device_path *dp = protocol_interface;
+
+ r = EFI_CALL(efi_locate_device_path(protocol, &dp,
+ &old_handle));
+ if (r == EFI_SUCCESS &&
+ dp->type == DEVICE_PATH_TYPE_END) {
+ EFI_PRINT("Path %pD already installed\n",
+ protocol_interface);
+ r = EFI_ALREADY_STARTED;
+ break;
+ }
+ }
r = EFI_CALL(efi_install_protocol_interface(
handle, protocol,
EFI_NATIVE_INTERFACE,
efi_uintn_t data_size,
u32 *crc32_p)
{
+ efi_status_t ret = EFI_SUCCESS;
+
EFI_ENTRY("%p, %zu", data, data_size);
+ if (!data || !data_size || !crc32_p) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
*crc32_p = crc32(0, data, data_size);
- return EFI_EXIT(EFI_SUCCESS);
+out:
+ return EFI_EXIT(ret);
}
/**
}
r = efi_search_protocol(handle, protocol, &handler);
- if (r != EFI_SUCCESS)
+ switch (r) {
+ case EFI_SUCCESS:
+ break;
+ case EFI_NOT_FOUND:
+ r = EFI_UNSUPPORTED;
goto out;
+ default:
+ goto out;
+ }
r = efi_protocol_open(handler, protocol_interface, agent_handle,
controller_handle, attributes);
* 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)image_obj->exit_status &
- ~EFI_ERROR_MASK));
+ EFI_PRINT("%lu returned by started image\n",
+ (unsigned long)((uintptr_t)image_obj->exit_status &
+ ~EFI_ERROR_MASK));
current_image = parent_image;
return EFI_EXIT(image_obj->exit_status);
}
current_image = image_handle;
+ image_obj->header.type = EFI_OBJECT_TYPE_STARTED_IMAGE;
EFI_PRINT("Jumping into 0x%p\n", image_obj->entry);
ret = EFI_CALL(image_obj->entry(image_handle, &systab));
return EFI_CALL(systab.boottime->exit(image_handle, ret, 0, NULL));
}
+/**
+ * efi_delete_image() - delete loaded image from memory)
+ *
+ * @image_obj: handle of the loaded image
+ * @loaded_image_protocol: loaded image protocol
+ */
+static void efi_delete_image(struct efi_loaded_image_obj *image_obj,
+ struct efi_loaded_image *loaded_image_protocol)
+{
+ efi_free_pages((uintptr_t)loaded_image_protocol->image_base,
+ efi_size_in_pages(loaded_image_protocol->image_size));
+ efi_delete_handle(&image_obj->header);
+}
+
+/**
+ * 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.
+ *
+ * Return: status code
+ */
+efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle)
+{
+ efi_status_t ret = EFI_SUCCESS;
+ struct efi_object *efiobj;
+ struct efi_loaded_image *loaded_image_protocol;
+
+ EFI_ENTRY("%p", image_handle);
+
+ efiobj = efi_search_obj(image_handle);
+ if (!efiobj) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ /* Find the loaded image protocol */
+ ret = EFI_CALL(efi_open_protocol(image_handle, &efi_guid_loaded_image,
+ (void **)&loaded_image_protocol,
+ NULL, NULL,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL));
+ if (ret != EFI_SUCCESS) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ switch (efiobj->type) {
+ case EFI_OBJECT_TYPE_STARTED_IMAGE:
+ /* Call the unload function */
+ if (!loaded_image_protocol->unload) {
+ ret = EFI_UNSUPPORTED;
+ goto out;
+ }
+ ret = EFI_CALL(loaded_image_protocol->unload(image_handle));
+ if (ret != EFI_SUCCESS)
+ goto out;
+ break;
+ case EFI_OBJECT_TYPE_LOADED_IMAGE:
+ break;
+ default:
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ efi_delete_image((struct efi_loaded_image_obj *)efiobj,
+ loaded_image_protocol);
+out:
+ return EFI_EXIT(ret);
+}
+
/**
* efi_update_exit_data() - fill exit data parameters of StartImage()
*
* image protocol.
*/
efi_status_t ret;
- void *info;
+ struct efi_loaded_image *loaded_image_protocol;
struct efi_loaded_image_obj *image_obj =
(struct efi_loaded_image_obj *)image_handle;
exit_data_size, exit_data);
/* Check parameters */
- if (image_handle != current_image)
- goto out;
ret = EFI_CALL(efi_open_protocol(image_handle, &efi_guid_loaded_image,
- &info, NULL, NULL,
+ (void **)&loaded_image_protocol,
+ NULL, NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL));
- if (ret != EFI_SUCCESS)
+ if (ret != EFI_SUCCESS) {
+ ret = EFI_INVALID_PARAMETER;
goto out;
+ }
+
+ /* Unloading of unstarted images */
+ switch (image_obj->header.type) {
+ case EFI_OBJECT_TYPE_STARTED_IMAGE:
+ break;
+ case EFI_OBJECT_TYPE_LOADED_IMAGE:
+ efi_delete_image(image_obj, loaded_image_protocol);
+ ret = EFI_SUCCESS;
+ goto out;
+ default:
+ /* Handle does not refer to loaded image */
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ /* A started image can only be unloaded it is the last one started. */
+ if (image_handle != current_image) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
/* Exit data is only foreseen in case of failure. */
if (exit_status != EFI_SUCCESS) {
if (ret != EFI_SUCCESS)
EFI_PRINT("%s: out of memory\n", __func__);
}
+ if (image_obj->image_type == IMAGE_SUBSYSTEM_EFI_APPLICATION ||
+ exit_status != EFI_SUCCESS)
+ efi_delete_image(image_obj, loaded_image_protocol);
/* Make sure entry/exit counts for EFI world cross-overs match */
EFI_EXIT(exit_status);
panic("EFI application exited");
out:
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_EXIT(ret);
}
/**
projects / oweals / u-boot.git / blobdiff