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efi_loader: EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE

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Implement the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.

This requires allocating the event and the event list from runtime data.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2019-07-11 20:15:09 +02:00
parent 961856031a
commit 14b40487ab
2 changed files with 31 additions and 8 deletions
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25
lib/efi_loader/efi_boottime.c
View file

@ -25,7 +25,7 @@ static efi_uintn_t efi_tpl = TPL_APPLICATION;
LIST_HEAD(efi_obj_list);
/* List of all events */
LIST_HEAD(efi_events);
__efi_runtime_data LIST_HEAD(efi_events);
/* List of queued events */
LIST_HEAD(efi_event_queue);
@ -650,6 +650,8 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
struct efi_event **event)
{
struct efi_event *evt;
efi_status_t ret;
int pool_type;
if (event == NULL)
return EFI_INVALID_PARAMETER;
@ -662,7 +664,10 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
case EVT_NOTIFY_WAIT:
case EVT_TIMER | EVT_NOTIFY_WAIT:
case EVT_SIGNAL_EXIT_BOOT_SERVICES:
pool_type = EFI_BOOT_SERVICES_DATA;
break;
case EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE:
pool_type = EFI_RUNTIME_SERVICES_DATA;
break;
default:
return EFI_INVALID_PARAMETER;
@ -672,9 +677,11 @@ efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
(!notify_function || is_valid_tpl(notify_tpl) != EFI_SUCCESS))
return EFI_INVALID_PARAMETER;
evt = calloc(1, sizeof(struct efi_event));
if (!evt)
return EFI_OUT_OF_RESOURCES;
ret = efi_allocate_pool(pool_type, sizeof(struct efi_event),
(void **)&evt);
if (ret != EFI_SUCCESS)
return ret;
memset(evt, 0, sizeof(struct efi_event));
evt->type = type;
evt->notify_tpl = notify_tpl;
evt->notify_function = notify_function;
@ -982,7 +989,7 @@ static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
list_del(&event->queue_link);
list_del(&event->link);
free(event);
efi_free_pool(event);
return EFI_EXIT(EFI_SUCCESS);
}
@ -1932,7 +1939,7 @@ static void efi_exit_caches(void)
static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
efi_uintn_t map_key)
{
struct efi_event *evt;
struct efi_event *evt, *next_event;
efi_status_t ret = EFI_SUCCESS;
EFI_ENTRY("%p, %zx", image_handle, map_key);
@ -1971,6 +1978,12 @@ static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
/* Notify variable services */
efi_variables_boot_exit_notify();
/* Remove all events except EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE */
list_for_each_entry_safe(evt, next_event, &efi_events, link) {
if (evt->type != EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE)
list_del(&evt->link);
}
board_quiesce_devices();
/* Patch out unsupported runtime function */

14
lib/efi_loader/efi_runtime.c
View file

@ -391,8 +391,10 @@ efi_status_t __weak __efi_runtime EFIAPI efi_set_time(struct efi_time *time)
*/
static bool efi_is_runtime_service_pointer(void *p)
{
return p >= (void *)&efi_runtime_services.get_time &&
p <= (void *)&efi_runtime_services.query_variable_info;
return (p >= (void *)&efi_runtime_services.get_time &&
p <= (void *)&efi_runtime_services.query_variable_info) ||
p == (void *)&efi_events.prev ||
p == (void *)&efi_events.next;
}
/**
@ -577,6 +579,7 @@ static efi_status_t EFIAPI efi_set_virtual_address_map(
int n = memory_map_size / descriptor_size;
int i;
int rt_code_sections = 0;
struct efi_event *event;
EFI_ENTRY("%lx %lx %x %p", memory_map_size, descriptor_size,
descriptor_version, virtmap);
@ -610,6 +613,13 @@ static efi_status_t EFIAPI efi_set_virtual_address_map(
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
/* Notify EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE */
list_for_each_entry(event, &efi_events, link) {
if (event->notify_function)
EFI_CALL_VOID(event->notify_function(
event, event->notify_context));
}
/* Rebind mmio pointers */
for (i = 0; i < n; i++) {
struct efi_mem_desc *map = (void*)virtmap +