1 files changed, 91 insertions, 0 deletions
diff --git a/stand/efi/libefi/efi_driver_utils.c b/stand/efi/libefi/efi_driver_utils.c
new file mode 100644
index 0000000000000..0edea5c1e0d87
--- /dev/null
+++ b/stand/efi/libefi/efi_driver_utils.c
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 2017 Eric McCorkle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <stdbool.h>
+
+#include <efi.h>
+#include <efilib.h>
+
+#include "efi_driver_utils.h"
+
+static EFI_GUID DriverBindingProtocolGUID = DRIVER_BINDING_PROTOCOL;
+
+EFI_STATUS
+connect_controllers(EFI_GUID *filter)
+{
+        EFI_STATUS status;
+        EFI_HANDLE *handles;
+        UINTN nhandles, i, hsize;
+
+        nhandles = 0;
+        hsize = 0;
+        status = BS->LocateHandle(ByProtocol, filter, NULL,
+                     &hsize, NULL);
+
+        if(status != EFI_BUFFER_TOO_SMALL) {
+                return (status);
+        }
+
+        handles = malloc(hsize);
+        nhandles = hsize / sizeof(EFI_HANDLE);
+
+        status = BS->LocateHandle(ByProtocol, filter, NULL,
+                     &hsize, handles);
+
+        if(EFI_ERROR(status)) {
+                return (status);
+        }
+
+        for(i = 0; i < nhandles; i++) {
+                BS->ConnectController(handles[i], NULL, NULL, true);
+        }
+
+        free(handles);
+
+        return (status);
+}
+
+EFI_STATUS
+install_driver(EFI_DRIVER_BINDING *driver)
+{
+        EFI_STATUS status;
+
+        driver->ImageHandle = IH;
+        driver->DriverBindingHandle = NULL;
+        status = BS->InstallMultipleProtocolInterfaces(
+            &(driver->DriverBindingHandle),
+            &DriverBindingProtocolGUID, driver,
+            NULL);
+
+        if (EFI_ERROR(status)) {
+                printf("Failed to install driver (%ld)!\n",
+                    EFI_ERROR_CODE(status));
+        }
+
+        return (status);
+}