1 files changed, 118 insertions, 0 deletions
diff --git a/usr/src/boot/efi/libefi/handles.c b/usr/src/boot/efi/libefi/handles.c
new file mode 100644
index 0000000000..1e4ef6ffbd
--- /dev/null
+++ b/usr/src/boot/efi/libefi/handles.c
@@ -0,0 +1,118 @@
+/*-
+ * Copyright (c) 2006 Marcel Moolenaar
+ * 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 ``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 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <efi.h>
+#include <efilib.h>
+
+struct entry {
+	EFI_HANDLE handle;
+	EFI_HANDLE alias;
+	struct devsw *dev;
+	int unit;
+	uint64_t extra;
+};
+
+struct entry *entry;
+int nentries;
+
+int
+efi_register_handles(struct devsw *sw, EFI_HANDLE *handles,
+    EFI_HANDLE *aliases, int count)
+{
+	size_t sz;
+	int idx, unit;
+
+	idx = nentries;
+	nentries += count;
+	sz = nentries * sizeof(struct entry);
+	entry = (entry == NULL) ? malloc(sz) : realloc(entry, sz);
+	for (unit = 0; idx < nentries; idx++, unit++) {
+		entry[idx].handle = handles[unit];
+		if (aliases != NULL)
+			entry[idx].alias = aliases[unit];
+		else
+			entry[idx].alias = NULL;
+		entry[idx].dev = sw;
+		entry[idx].unit = unit;
+	}
+	return (0);
+}
+
+EFI_HANDLE
+efi_find_handle(struct devsw *dev, int unit)
+{
+	int idx;
+
+	for (idx = 0; idx < nentries; idx++) {
+		if (entry[idx].dev != dev)
+			continue;
+		if (entry[idx].unit != unit)
+			continue;
+		return (entry[idx].handle);
+	}
+	return (NULL);
+}
+
+int
+efi_handle_lookup(EFI_HANDLE h, struct devsw **dev, int *unit, uint64_t *extra)
+{
+	int idx;
+
+	for (idx = 0; idx < nentries; idx++) {
+		if (entry[idx].handle != h && entry[idx].alias != h)
+			continue;
+		if (dev != NULL)
+			*dev = entry[idx].dev;
+		if (unit != NULL)
+			*unit = entry[idx].unit;
+		if (extra != NULL)
+			*extra = entry[idx].extra;
+		return (0);
+	}
+	return (ENOENT);
+}
+
+int
+efi_handle_update_dev(EFI_HANDLE h, struct devsw *dev, int unit,
+    uint64_t guid)
+{
+	int idx;
+
+	for (idx = 0; idx < nentries; idx++) {
+		if (entry[idx].handle != h)
+			continue;
+		entry[idx].dev = dev;
+		entry[idx].unit = unit;
+		entry[idx].alias = NULL;
+		entry[idx].extra = guid;
+		return (0);
+	}
+
+	return (ENOENT);
+}