*/
#include <common.h>
+#include <div64.h>
#include <efi_loader.h>
+#include <environment.h>
#include <malloc.h>
#include <asm/global_data.h>
#include <libfdt_env.h>
DECLARE_GLOBAL_DATA_PTR;
+/* Task priority level */
+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 volatile void *efi_gd, *app_gd;
#endif
+static int entry_count;
+static int nesting_level;
+
+/* Called on every callback entry */
+int __efi_entry_check(void)
+{
+ int ret = entry_count++ == 0;
+#ifdef CONFIG_ARM
+ assert(efi_gd);
+ app_gd = gd;
+ gd = efi_gd;
+#endif
+ return ret;
+}
+
+/* Called on every callback exit */
+int __efi_exit_check(void)
+{
+ int ret = --entry_count == 0;
+#ifdef CONFIG_ARM
+ gd = app_gd;
+#endif
+ return ret;
+}
+
/* Called from do_bootefi_exec() */
void efi_save_gd(void)
{
#endif
}
-/* Called on every callback entry */
+/*
+ * 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)
{
#ifdef CONFIG_ARM
/* Only restore if we're already in EFI context */
if (!efi_gd)
return;
-
- if (gd != efi_gd)
- app_gd = gd;
gd = efi_gd;
#endif
}
-/* Called on every callback exit */
-efi_status_t efi_exit_func(efi_status_t ret)
+/*
+ * Two spaces per indent level, maxing out at 10.. which ought to be
+ * enough for anyone ;-)
+ */
+static const char *indent_string(int level)
{
-#ifdef CONFIG_ARM
- gd = app_gd;
-#endif
+ const char *indent = " ";
+ const int max = strlen(indent);
+ level = min(max, level * 2);
+ return &indent[max - level];
+}
- return ret;
+const char *__efi_nesting(void)
+{
+ return indent_string(nesting_level);
}
-static void efi_signal_event(struct efi_event *event)
+const char *__efi_nesting_inc(void)
{
- if (event->signaled)
- return;
- event->signaled = 1;
- if (event->type & EVT_NOTIFY_SIGNAL) {
- EFI_EXIT(EFI_SUCCESS);
- event->notify_function(event, event->notify_context);
- EFI_ENTRY("returning from notification function");
- }
+ return indent_string(nesting_level++);
}
-static efi_status_t efi_unsupported(const char *funcname)
+const char *__efi_nesting_dec(void)
{
- debug("EFI: App called into unimplemented function %s\n", funcname);
- return EFI_EXIT(EFI_UNSUPPORTED);
+ return indent_string(--nesting_level);
}
-static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2)
+/*
+ * Queue an EFI event.
+ *
+ * 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.
+ *
+ * For the SignalEvent service see efi_signal_event_ext.
+ *
+ * @event event to signal
+ */
+void efi_signal_event(struct efi_event *event)
{
- return memcmp(g1, g2, sizeof(efi_guid_t));
+ if (event->notify_function) {
+ event->is_queued = true;
+ /* Check TPL */
+ if (efi_tpl >= event->notify_tpl)
+ return;
+ EFI_CALL_VOID(event->notify_function(event,
+ event->notify_context));
+ }
+ event->is_queued = false;
}
-static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl)
+/*
+ * Raise 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
+ */
+static unsigned long EFIAPI efi_raise_tpl(efi_uintn_t new_tpl)
{
+ efi_uintn_t old_tpl = efi_tpl;
+
EFI_ENTRY("0x%zx", new_tpl);
- return EFI_EXIT(0);
+
+ if (new_tpl < efi_tpl)
+ debug("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_EXIT(EFI_SUCCESS);
+ return old_tpl;
}
-static void EFIAPI efi_restore_tpl(UINTN old_tpl)
+/*
+ * Lower the task priority level.
+ *
+ * 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
+ */
+static void EFIAPI efi_restore_tpl(efi_uintn_t old_tpl)
{
EFI_ENTRY("0x%zx", old_tpl);
- EFI_EXIT(efi_unsupported(__func__));
+
+ if (old_tpl > efi_tpl)
+ debug("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_EXIT(EFI_SUCCESS);
}
+/*
+ * Allocate memory pages.
+ *
+ * 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
+ */
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);
}
+/*
+ * Free memory pages.
+ *
+ * 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
+ */
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);
}
+/*
+ * Get map describing memory usage.
+ *
+ * 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
+ */
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 EFI_EXIT(r);
}
+/*
+ * Allocate memory from pool.
+ *
+ * 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
+ */
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);
}
+/*
+ * Free memory from pool.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
{
efi_status_t r;
return EFI_EXIT(r);
}
+static efi_status_t efi_create_handle(void **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;
+ memset(obj, 0, sizeof(struct efi_object));
+ obj->handle = obj;
+ list_add_tail(&obj->link, &efi_obj_list);
+ *handle = obj;
+ return r;
+}
+
/*
* Our event capabilities are very limited. Only a small limited
* number of events is allowed to coexist.
*/
static struct efi_event efi_events[16];
-static efi_status_t EFIAPI efi_create_event(
- enum efi_event_type type, UINTN notify_tpl,
- void (EFIAPI *notify_function) (
+/*
+ * Create an 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
+ */
+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, struct efi_event **event)
{
int i;
- EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function,
- notify_context);
if (event == NULL)
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) &&
notify_function == NULL)
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (efi_events[i].type)
efi_events[i].notify_context = notify_context;
/* Disable timers on bootup */
efi_events[i].trigger_next = -1ULL;
- efi_events[i].signaled = 0;
+ efi_events[i].is_queued = false;
+ efi_events[i].is_signaled = false;
*event = &efi_events[i];
- return EFI_EXIT(EFI_SUCCESS);
+ return EFI_SUCCESS;
}
- return EFI_EXIT(EFI_OUT_OF_RESOURCES);
+ return EFI_OUT_OF_RESOURCES;
+}
+
+/*
+ * Create an 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
+ */
+static efi_status_t EFIAPI efi_create_event_ext(
+ 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)
+{
+ 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));
}
+
/*
+ * Check if a timer event has occurred or a queued notification function should
+ * be called.
+ *
* Our timers have to work without interrupts, so we check whenever keyboard
- * input or disk accesses happen if enough time elapsed for it to fire.
+ * input or disk accesses happen if enough time elapsed for them to fire.
*/
void efi_timer_check(void)
{
u64 now = timer_get_us();
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
- if (!efi_events[i].type ||
- !(efi_events[i].type & EVT_TIMER) ||
- efi_events[i].trigger_type == EFI_TIMER_STOP ||
+ if (!efi_events[i].type)
+ continue;
+ if (efi_events[i].is_queued)
+ efi_signal_event(&efi_events[i]);
+ if (!(efi_events[i].type & EVT_TIMER) ||
now < efi_events[i].trigger_next)
continue;
- if (efi_events[i].trigger_type == EFI_TIMER_PERIODIC) {
+ switch (efi_events[i].trigger_type) {
+ case EFI_TIMER_RELATIVE:
+ efi_events[i].trigger_type = EFI_TIMER_STOP;
+ break;
+ case EFI_TIMER_PERIODIC:
efi_events[i].trigger_next +=
- efi_events[i].trigger_time / 10;
- efi_events[i].signaled = 0;
+ efi_events[i].trigger_time;
+ break;
+ default:
+ continue;
}
+ efi_events[i].is_signaled = true;
efi_signal_event(&efi_events[i]);
}
WATCHDOG_RESET();
}
-static efi_status_t EFIAPI efi_set_timer(struct efi_event *event, int type,
- uint64_t trigger_time)
+/*
+ * Set the trigger time for a timer event or stop the event.
+ *
+ * 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
+ */
+efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
+ uint64_t trigger_time)
{
- /* We don't have 64bit division available everywhere, so limit timer
- * distances to 32bit bits. */
- u32 trigger32 = trigger_time;
int i;
- EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time);
-
- if (trigger32 < trigger_time) {
- printf("WARNING: Truncating timer from %"PRIx64" to %x\n",
- trigger_time, trigger32);
- }
+ /*
+ * The parameter defines a multiple of 100ns.
+ * We use multiples of 1000ns. So divide by 10.
+ */
+ do_div(trigger_time, 10);
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (event != &efi_events[i])
case EFI_TIMER_PERIODIC:
case EFI_TIMER_RELATIVE:
event->trigger_next =
- timer_get_us() + (trigger32 / 10);
+ timer_get_us() + trigger_time;
break;
default:
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
}
event->trigger_type = type;
event->trigger_time = trigger_time;
- return EFI_EXIT(EFI_SUCCESS);
+ event->is_signaled = false;
+ return EFI_SUCCESS;
}
- return EFI_EXIT(EFI_INVALID_PARAMETER);
+ return EFI_INVALID_PARAMETER;
+}
+
+/*
+ * Set the trigger time for a timer event or stop the event.
+ *
+ * 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
+ */
+static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event,
+ enum efi_timer_delay type,
+ uint64_t trigger_time)
+{
+ EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time);
+ return EFI_EXIT(efi_set_timer(event, type, trigger_time));
}
-static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events,
+/*
+ * Wait for events to be 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
+ */
+static efi_status_t EFIAPI efi_wait_for_event(efi_uintn_t num_events,
struct efi_event **event,
- unsigned long *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)
return EFI_EXIT(EFI_INVALID_PARAMETER);
+ /* Check TPL */
+ if (efi_tpl != TPL_APPLICATION)
+ return EFI_EXIT(EFI_UNSUPPORTED);
for (i = 0; i < num_events; ++i) {
for (j = 0; j < ARRAY_SIZE(efi_events); ++j) {
if (event[i] == &efi_events[j])
known_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]);
}
/* Wait for signal */
for (;;) {
for (i = 0; i < num_events; ++i) {
- if (event[i]->signaled)
+ if (event[i]->is_signaled)
goto out;
}
/* Allow events to occur. */
* Reset the signal which is passed to the caller to allow periodic
* events to occur.
*/
- event[i]->signaled = 0;
+ event[i]->is_signaled = false;
if (index)
*index = i;
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Signal an EFI event.
+ *
+ * This function implements the SignalEvent service.
+ * 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
+ */
static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event)
{
int i;
for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
if (event != &efi_events[i])
continue;
- efi_signal_event(event);
+ if (event->is_signaled)
+ break;
+ event->is_signaled = true;
+ if (event->type & EVT_NOTIFY_SIGNAL)
+ efi_signal_event(event);
break;
}
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Close an EFI event.
+ *
+ * This function implements the CloseEvent service.
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * @event event to close
+ * @return status code
+ */
static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
{
int i;
if (event == &efi_events[i]) {
event->type = 0;
event->trigger_next = -1ULL;
- event->signaled = 0;
+ event->is_queued = false;
+ event->is_signaled = false;
return EFI_EXIT(EFI_SUCCESS);
}
}
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
+/*
+ * Check if an event is signaled.
+ *
+ * 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.
+ *
+ * @event event to check
+ * @return status code
+ */
static efi_status_t EFIAPI efi_check_event(struct efi_event *event)
{
int i;
continue;
if (!event->type || event->type & EVT_NOTIFY_SIGNAL)
break;
- if (event->signaled)
+ if (!event->is_signaled)
+ efi_signal_event(event);
+ if (event->is_signaled)
return EFI_EXIT(EFI_SUCCESS);
return EFI_EXIT(EFI_NOT_READY);
}
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
-static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
- efi_guid_t *protocol, int protocol_interface_type,
- void *protocol_interface)
+/*
+ * Find the internal EFI object for a handle.
+ *
+ * @handle handle to find
+ * @return EFI object
+ */
+struct efi_object *efi_search_obj(void *handle)
+{
+ struct efi_object *efiobj;
+
+ list_for_each_entry(efiobj, &efi_obj_list, link) {
+ if (efiobj->handle == handle)
+ return efiobj;
+ }
+
+ return NULL;
+}
+
+/*
+ * Install protocol interface.
+ *
+ * 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
+ */
+static efi_status_t EFIAPI efi_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,
+ protocol_interface);
+
if (!handle || !protocol ||
protocol_interface_type != EFI_NATIVE_INTERFACE) {
r = EFI_INVALID_PARAMETER;
/* Create new handle if requested. */
if (!*handle) {
- r = EFI_OUT_OF_RESOURCES;
- goto out;
+ r = efi_create_handle(handle);
+ if (r != EFI_SUCCESS)
+ goto out;
}
/* Find object. */
list_for_each(lhandle, &efi_obj_list) {
}
r = EFI_INVALID_PARAMETER;
out:
- return r;
-}
-
-static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle,
- efi_guid_t *protocol, int protocol_interface_type,
- void *protocol_interface)
-{
- EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type,
- protocol_interface);
-
- return EFI_EXIT(efi_install_protocol_interface(handle, protocol,
- protocol_interface_type,
- protocol_interface));
+ return EFI_EXIT(r);
}
+/*
+ * Reinstall protocol interface.
+ *
+ * This function implements the ReinstallProtocolInterface service.
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * @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(void *handle,
- efi_guid_t *protocol, void *old_interface,
+ const efi_guid_t *protocol, void *old_interface,
void *new_interface)
{
- EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface,
+ EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface,
new_interface);
return EFI_EXIT(EFI_ACCESS_DENIED);
}
-static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle,
- efi_guid_t *protocol, void *protocol_interface)
+/*
+ * Uninstall protocol interface.
+ *
+ * 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
+ */
+static efi_status_t EFIAPI efi_uninstall_protocol_interface(
+ void *handle, const efi_guid_t *protocol,
+ void *protocol_interface)
{
struct list_head *lhandle;
int i;
efi_status_t r = EFI_NOT_FOUND;
+ EFI_ENTRY("%p, %pUl, %p", handle, protocol, protocol_interface);
+
if (!handle || !protocol) {
r = EFI_INVALID_PARAMETER;
goto out;
}
out:
- return r;
-}
-
-static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle,
- efi_guid_t *protocol, void *protocol_interface)
-{
- EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface);
-
- return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol,
- protocol_interface));
+ return EFI_EXIT(r);
}
-static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol,
- struct efi_event *event,
- void **registration)
+/*
+ * Register an event for notification when a protocol is installed.
+ *
+ * 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
+ */
+static efi_status_t EFIAPI efi_register_protocol_notify(
+ const efi_guid_t *protocol,
+ struct efi_event *event,
+ void **registration)
{
- EFI_ENTRY("%p, %p, %p", protocol, event, registration);
+ EFI_ENTRY("%pUl, %p, %p", protocol, event, registration);
return EFI_EXIT(EFI_OUT_OF_RESOURCES);
}
+/*
+ * Determine if an EFI handle implements a protocol.
+ *
+ * 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
+ */
static int efi_search(enum efi_locate_search_type search_type,
- efi_guid_t *protocol, void *search_key,
+ const efi_guid_t *protocol, void *search_key,
struct efi_object *efiobj)
{
int i;
switch (search_type) {
- case all_handles:
+ case ALL_HANDLES:
return 0;
- case by_register_notify:
+ case BY_REGISTER_NOTIFY:
+ /* RegisterProtocolNotify is not implemented yet */
return -1;
- case by_protocol:
+ 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 -1;
}
-static efi_status_t EFIAPI efi_locate_handle(
+/*
+ * Locate handles implementing a protocol.
+ *
+ * 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
+ */
+static efi_status_t efi_locate_handle(
enum efi_locate_search_type search_type,
- efi_guid_t *protocol, void *search_key,
- unsigned long *buffer_size, efi_handle_t *buffer)
+ const efi_guid_t *protocol, void *search_key,
+ 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_BUFFER_TOO_SMALL;
}
+ *buffer_size = size;
+ if (size == 0)
+ 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;
}
- *buffer_size = size;
return EFI_SUCCESS;
}
+/*
+ * Locate handles implementing a protocol.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_locate_handle_ext(
enum efi_locate_search_type search_type,
- efi_guid_t *protocol, void *search_key,
- unsigned long *buffer_size, efi_handle_t *buffer)
+ const efi_guid_t *protocol, void *search_key,
+ efi_uintn_t *buffer_size, efi_handle_t *buffer)
{
- EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
+ EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key,
buffer_size, buffer);
return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key,
buffer_size, buffer));
}
-static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol,
+/*
+ * 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)
{
- EFI_ENTRY("%p, %p, %p", protocol, device_path, device);
- return EFI_EXIT(EFI_NOT_FOUND);
+ 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)
+{
+ struct efi_configuration_table *this = &efi_conf_table[i];
+ struct efi_configuration_table *next = &efi_conf_table[i+1];
+ struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables];
+
+ memmove(this, next, (ulong)end - (ulong)next);
+ systab.nr_tables--;
+}
+
+/*
+ * Adds, updates, or removes a configuration table.
+ *
+ * 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
+ */
efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table)
{
int i;
/* Check for guid override */
for (i = 0; i < systab.nr_tables; i++) {
if (!guidcmp(guid, &efi_conf_table[i].guid)) {
- efi_conf_table[i].table = table;
+ if (table)
+ efi_conf_table[i].table = table;
+ else
+ efi_remove_configuration_table(i);
return EFI_SUCCESS;
}
}
+ if (!table)
+ return EFI_NOT_FOUND;
+
/* No override, check for overflow */
if (i >= ARRAY_SIZE(efi_conf_table))
return EFI_OUT_OF_RESOURCES;
return EFI_SUCCESS;
}
+/*
+ * Adds, updates, or removes a configuration table.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid,
void *table)
{
- EFI_ENTRY("%p, %p", guid, table);
+ EFI_ENTRY("%pUl, %p", guid, table);
return EFI_EXIT(efi_install_configuration_table(guid, table));
}
+/*
+ * Initialize a loaded_image_info + 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
+ */
+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)
+{
+ obj->handle = info;
+
+ /*
+ * 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;
+
+ /*
+ * 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;
+
+ obj->protocols[3].guid = &efi_guid_device_path_to_text_protocol;
+ obj->protocols[3].protocol_interface =
+ (void *)&efi_device_path_to_text;
+
+ info->file_path = file_path;
+ if (device_path)
+ info->device_handle = efi_dp_find_obj(device_path, NULL);
+
+ list_add_tail(&obj->link, &efi_obj_list);
+}
+
+/*
+ * Load an image using a file path.
+ *
+ * @file_path the path of the image to load
+ * @buffer buffer containing the loaded image
+ * @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;
+
+ f = efi_file_from_path(file_path);
+ if (!f)
+ return EFI_DEVICE_ERROR;
+
+ bs = 0;
+ EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid,
+ &bs, info));
+ if (ret == EFI_BUFFER_TOO_SMALL) {
+ info = malloc(bs);
+ EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid,
+ &bs, info));
+ }
+ if (ret != EFI_SUCCESS)
+ goto error;
+
+ ret = efi_allocate_pool(EFI_LOADER_DATA, info->file_size, buffer);
+ if (ret)
+ goto error;
+
+ EFI_CALL(ret = f->read(f, &info->file_size, *buffer));
+
+error:
+ free(info);
+ EFI_CALL(f->close(f));
+
+ if (ret != EFI_SUCCESS) {
+ efi_free_pool(*buffer);
+ *buffer = NULL;
+ }
+
+ return ret;
+}
+
+/*
+ * Load an EFI image into memory.
+ *
+ * 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 calles'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
+ */
static efi_status_t EFIAPI efi_load_image(bool boot_policy,
efi_handle_t parent_image,
struct efi_device_path *file_path,
unsigned long source_size,
efi_handle_t *image_handle)
{
- static struct efi_object loaded_image_info_obj = {
- .protocols = {
- {
- .guid = &efi_guid_loaded_image,
- },
- },
- };
struct efi_loaded_image *info;
struct efi_object *obj;
EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
file_path, source_buffer, source_size, image_handle);
- info = malloc(sizeof(*info));
- loaded_image_info_obj.protocols[0].protocol_interface = info;
- obj = malloc(sizeof(loaded_image_info_obj));
- memset(info, 0, sizeof(*info));
- memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj));
- obj->handle = info;
- info->file_path = file_path;
+
+ info = calloc(1, sizeof(*info));
+ obj = calloc(1, sizeof(*obj));
+
+ 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);
+ }
+
+ /*
+ * 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);
+ } 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);
+ }
+
info->reserved = efi_load_pe(source_buffer, info);
if (!info->reserved) {
free(info);
return EFI_EXIT(EFI_UNSUPPORTED);
}
+ info->system_table = &systab;
+ info->parent_handle = parent_image;
*image_handle = info;
- list_add_tail(&obj->link, &efi_obj_list);
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Call the entry point of an 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
+ */
static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
unsigned long *exit_data_size,
s16 **exit_data)
return EFI_EXIT(info->exit_status);
}
+ __efi_nesting_dec();
+ __efi_exit_check();
entry(image_handle, &systab);
+ __efi_entry_check();
+ __efi_nesting_inc();
/* Should usually never get here */
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Leave an EFI application or driver.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle,
efi_status_t exit_status, unsigned long exit_data_size,
int16_t *exit_data)
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();
+
+ /*
+ * But longjmp out with the U-Boot gd, not the application's, as
+ * the other end is a setjmp call inside EFI context.
+ */
+ efi_restore_gd();
+
loaded_image_info->exit_status = exit_status;
longjmp(&loaded_image_info->exit_jmp, 1);
panic("EFI application exited");
}
-static struct efi_object *efi_search_obj(void *handle)
-{
- struct list_head *lhandle;
-
- list_for_each(lhandle, &efi_obj_list) {
- struct efi_object *efiobj;
- efiobj = list_entry(lhandle, struct efi_object, link);
- if (efiobj->handle == handle)
- return efiobj;
- }
-
- return NULL;
-}
-
+/*
+ * Unload an EFI image.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_unload_image(void *image_handle)
{
struct efi_object *efiobj;
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Fix up caches for EFI payloads if necessary.
+ */
static void efi_exit_caches(void)
{
#if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
#endif
}
+/*
+ * Stop boot services.
+ *
+ * This function implements the ExitBootServices service.
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * @image_handle handle of the loaded image
+ * @map_key key of the memory map
+ * @return status code
+ */
static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
unsigned long map_key)
{
+ int i;
+
EFI_ENTRY("%p, %ld", image_handle, map_key);
+ /* Notify that ExitBootServices is invoked. */
+ for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
+ if (efi_events[i].type != EVT_SIGNAL_EXIT_BOOT_SERVICES)
+ continue;
+ efi_signal_event(&efi_events[i]);
+ }
+ /* Make sure that notification functions are not called anymore */
+ efi_tpl = TPL_HIGH_LEVEL;
+
+ /* XXX Should persist EFI variables here */
+
board_quiesce_devices();
/* Fix up caches for EFI payloads if necessary */
bootm_disable_interrupts();
/* Give the payload some time to boot */
+ efi_set_watchdog(0);
WATCHDOG_RESET();
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Get next 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
+ */
static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count)
{
static uint64_t mono = 0;
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Sleep.
+ *
+ * This function implements the Stall sercive.
+ * See the Unified Extensible Firmware Interface (UEFI) specification
+ * for details.
+ *
+ * @microseconds period to sleep in microseconds
+ * @return status code
+ */
static efi_status_t EFIAPI efi_stall(unsigned long microseconds)
{
EFI_ENTRY("%ld", microseconds);
return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Reset the watchdog timer.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout,
uint64_t watchdog_code,
unsigned long data_size,
{
EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code,
data_size, watchdog_data);
- return EFI_EXIT(efi_unsupported(__func__));
+ 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,
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)
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
+/*
+ * Close a protocol.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_close_protocol(void *handle,
- efi_guid_t *protocol,
+ const efi_guid_t *protocol,
void *agent_handle,
void *controller_handle)
{
- EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle,
+ EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, agent_handle,
controller_handle);
return EFI_EXIT(EFI_NOT_FOUND);
}
+/*
+ * Provide information about then open status of a protocol on a handle
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle,
- efi_guid_t *protocol,
+ const efi_guid_t *protocol,
struct efi_open_protocol_info_entry **entry_buffer,
- unsigned long *entry_count)
+ efi_uintn_t *entry_count)
{
- EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer,
+ EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, entry_buffer,
entry_count);
return EFI_EXIT(EFI_NOT_FOUND);
}
+/*
+ * Get protocols installed on a handle.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_protocols_per_handle(void *handle,
efi_guid_t ***protocol_buffer,
- unsigned long *protocol_buffer_count)
+ efi_uintn_t *protocol_buffer_count)
{
+ unsigned long buffer_size;
+ struct efi_object *efiobj;
+ unsigned long i, j;
+ struct list_head *lhandle;
+ efi_status_t r;
+
EFI_ENTRY("%p, %p, %p", handle, protocol_buffer,
protocol_buffer_count);
- return EFI_EXIT(EFI_OUT_OF_RESOURCES);
+
+ if (!handle || !protocol_buffer || !protocol_buffer_count)
+ return EFI_EXIT(EFI_INVALID_PARAMETER);
+
+ *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;
+
+ /* 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;
+ }
+ }
+ }
+ break;
+ }
+
+ return EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Locate handles implementing a protocol.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_locate_handle_buffer(
enum efi_locate_search_type search_type,
- efi_guid_t *protocol, void *search_key,
- unsigned long *no_handles, efi_handle_t **buffer)
+ const efi_guid_t *protocol, void *search_key,
+ 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, %p, %p, %p, %p", search_type, protocol, search_key,
+ EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key,
no_handles, buffer);
if (!no_handles || !buffer) {
return EFI_EXIT(r);
}
-static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol,
+/*
+ * Find an interface implementing a 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
+ */
+static efi_status_t EFIAPI efi_locate_protocol(const efi_guid_t *protocol,
void *registration,
void **protocol_interface)
{
struct list_head *lhandle;
int i;
- EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface);
+ 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;
return EFI_EXIT(EFI_NOT_FOUND);
}
+/*
+ * Install multiple protocol 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
+ */
static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(
void **handle, ...)
{
EFI_ENTRY("%p", handle);
va_list argptr;
- efi_guid_t *protocol;
+ const efi_guid_t *protocol;
void *protocol_interface;
efi_status_t r = EFI_SUCCESS;
int i = 0;
if (!protocol)
break;
protocol_interface = va_arg(argptr, void*);
- r = efi_install_protocol_interface(handle, protocol,
- EFI_NATIVE_INTERFACE,
- protocol_interface);
+ r = EFI_CALL(efi_install_protocol_interface(
+ handle, protocol,
+ EFI_NATIVE_INTERFACE,
+ protocol_interface));
if (r != EFI_SUCCESS)
break;
i++;
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*);
protocol_interface = va_arg(argptr, void*);
- efi_uninstall_protocol_interface(handle, protocol,
- protocol_interface);
+ EFI_CALL(efi_uninstall_protocol_interface(handle, protocol,
+ protocol_interface));
}
va_end(argptr);
return EFI_EXIT(r);
}
+/*
+ * Uninstall multiple protocol 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
+ */
static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(
void *handle, ...)
{
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
+/*
+ * Calculate 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
+ */
static efi_status_t EFIAPI efi_calculate_crc32(void *data,
unsigned long data_size,
uint32_t *crc32_p)
return EFI_EXIT(EFI_SUCCESS);
}
-static void EFIAPI efi_copy_mem(void *destination, void *source,
- unsigned long length)
+/*
+ * Copy memory.
+ *
+ * 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
+ */
+static void EFIAPI efi_copy_mem(void *destination, const void *source,
+ size_t length)
{
- EFI_ENTRY("%p, %p, %ld", destination, source, length);
+ EFI_ENTRY("%p, %p, %ld", destination, source, (unsigned long)length);
memcpy(destination, source, length);
+ EFI_EXIT(EFI_SUCCESS);
}
-static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value)
+/*
+ * Fill memory with a byte value.
+ *
+ * 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
+ */
+static void EFIAPI efi_set_mem(void *buffer, size_t size, uint8_t value)
{
- EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value);
+ EFI_ENTRY("%p, %ld, 0x%x", buffer, (unsigned long)size, value);
memset(buffer, value, size);
+ EFI_EXIT(EFI_SUCCESS);
}
+/*
+ * Open protocol interface on a handle.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_open_protocol(
- void *handle, efi_guid_t *protocol,
+ void *handle, const efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
int i;
efi_status_t r = EFI_INVALID_PARAMETER;
- EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol,
+ EFI_ENTRY("%p, %pUl, %p, %p, %p, 0x%x", handle, protocol,
protocol_interface, agent_handle, controller_handle,
attributes);
goto out;
}
+ EFI_PRINT_GUID("protocol", protocol);
+
switch (attributes) {
case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL:
case EFI_OPEN_PROTOCOL_GET_PROTOCOL:
return EFI_EXIT(r);
}
+/*
+ * Get interface of a protocol on a handle.
+ *
+ * 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
+ */
static efi_status_t EFIAPI efi_handle_protocol(void *handle,
- efi_guid_t *protocol,
+ const efi_guid_t *protocol,
void **protocol_interface)
{
return efi_open_protocol(handle, protocol, protocol_interface, NULL,
.get_memory_map = efi_get_memory_map_ext,
.allocate_pool = efi_allocate_pool_ext,
.free_pool = efi_free_pool_ext,
- .create_event = efi_create_event,
- .set_timer = efi_set_timer,
+ .create_event = efi_create_event_ext,
+ .set_timer = efi_set_timer_ext,
.wait_for_event = efi_wait_for_event,
.signal_event = efi_signal_event_ext,
.close_event = efi_close_event,
.check_event = efi_check_event,
- .install_protocol_interface = efi_install_protocol_interface_ext,
+ .install_protocol_interface = efi_install_protocol_interface,
.reinstall_protocol_interface = efi_reinstall_protocol_interface,
- .uninstall_protocol_interface = efi_uninstall_protocol_interface_ext,
+ .uninstall_protocol_interface = efi_uninstall_protocol_interface,
.handle_protocol = efi_handle_protocol,
.reserved = NULL,
.register_protocol_notify = efi_register_protocol_notify,
projects / J-u-boot.git / blobdiff