1 files changed, 122 insertions, 0 deletions
diff --git a/stand/efi/libefi/efizfs.c b/stand/efi/libefi/efizfs.c
new file mode 100644
index 000000000000..7c434765fb54
--- /dev/null
+++ b/stand/efi/libefi/efizfs.c
@@ -0,0 +1,122 @@
+/*-
+ * Copyright (c) 2008-2010 Rui Paulo
+ * 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 <sys/param.h>
+#include <sys/disk.h>
+#include <stdint.h>
+
+#ifdef EFI_ZFS_BOOT
+#include <libzfs.h>
+#endif
+
+#include <efi.h>
+#include <efilib.h>
+
+#include "efizfs.h"
+
+#ifdef EFI_ZFS_BOOT
+static zfsinfo_list_t zfsinfo;
+
+uint64_t pool_guid;
+
+zfsinfo_list_t *
+efizfs_get_zfsinfo_list(void)
+{
+	return (&zfsinfo);
+}
+
+EFI_HANDLE
+efizfs_get_handle_by_guid(uint64_t guid)
+{
+	zfsinfo_t *zi;
+
+	STAILQ_FOREACH(zi, &zfsinfo, zi_link) {
+		if (zi->zi_pool_guid == guid) {
+			return (zi->zi_handle);
+		}
+	}
+	return (NULL);
+}
+
+static void
+insert_zfs(EFI_HANDLE handle, uint64_t guid)
+{
+        zfsinfo_t *zi;
+
+        zi = malloc(sizeof(zfsinfo_t));
+        zi->zi_handle = handle;
+        zi->zi_pool_guid = guid;
+        STAILQ_INSERT_TAIL(&zfsinfo, zi, zi_link);
+}
+
+void
+efi_zfs_probe(void)
+{
+	pdinfo_list_t *hdi;
+	pdinfo_t *hd, *pd = NULL;
+	char devname[SPECNAMELEN + 1];
+        uint64_t guid;
+
+	hdi = efiblk_get_pdinfo_list(&efipart_hddev);
+	STAILQ_INIT(&zfsinfo);
+
+	/*
+	 * Find the handle for the boot device. The boot1 did find the
+	 * device with loader binary, now we need to search for the
+	 * same device and if it is part of the zfs pool, we record the
+	 * pool GUID for currdev setup.
+	 */
+	STAILQ_FOREACH(hd, hdi, pd_link) {
+		STAILQ_FOREACH(pd, &hd->pd_part, pd_link) {
+
+			snprintf(devname, sizeof(devname), "%s%dp%d:",
+			    efipart_hddev.dv_name, hd->pd_unit, pd->pd_unit);
+
+                        if (zfs_probe_dev(devname, &guid) == 0) {
+                                insert_zfs(pd->pd_handle, guid);
+
+                                if (efi_zfs_is_preferred(pd->pd_handle))
+                                        pool_guid = guid;
+                        }
+
+		}
+	}
+}
+
+uint64_t
+ldi_get_size(void *priv)
+{
+	int fd = (uintptr_t) priv;
+	uint64_t size;
+
+	ioctl(fd, DIOCGMEDIASIZE, &size);
+	return (size);
+}
+#endif