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authorxypron.glpk@gmx.de2017-07-11 22:06:24 +0200
committerAlexander Graf2017-07-19 14:14:40 +0200
commit88adae5ef057845f6bc69c63123df4332fe835b1 (patch)
tree349755e54709b23c59264acedea2cd510615727b /lib/efi_loader
parent011f432745ae7fdb645e16c03382a4181d262619 (diff)
efi_loader: reimplement efi_locate_protocol
The UEFI specification requires that LocateProtol finds the first handle supporting the protocol and to return a pointer to its interface. So we have to assign the protocols to an efi_object and not use any separate storage. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib/efi_loader')
-rw-r--r--lib/efi_loader/efi_boottime.c32
1 files changed, 20 insertions, 12 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 6f093290eb6..339fe55cde9 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -786,27 +786,35 @@ out:
return EFI_EXIT(r);
}
-static struct efi_class_map efi_class_maps[] = {
- {
- .guid = &efi_guid_console_control,
- .interface = &efi_console_control
- },
-};
-
static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol,
void *registration,
void **protocol_interface)
{
+ struct list_head *lhandle;
int i;
EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface);
- for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) {
- struct efi_class_map *curmap = &efi_class_maps[i];
- if (!guidcmp(protocol, curmap->guid)) {
- *protocol_interface = (void*)curmap->interface;
- return EFI_EXIT(EFI_SUCCESS);
+
+ if (!protocol || !protocol_interface)
+ return EFI_EXIT(EFI_INVALID_PARAMETER);
+
+ list_for_each(lhandle, &efi_obj_list) {
+ struct efi_object *efiobj;
+
+ 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);
+ }
}
}
+ *protocol_interface = NULL;
return EFI_EXIT(EFI_NOT_FOUND);
}