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Subject: [Bug 223969] EFI boot failure when using UFS disk
Date: Wed, 29 Nov 2017 15:51:35 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223969

--- Comment #6 from Toomas Soome <tsoome@freebsd.org> ---
Could you test this update:

Index: stand/efi/libefi/efipart.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- stand/efi/libefi/efipart.c  (revision 326368)
+++ stand/efi/libefi/efipart.c  (working copy)
@@ -257,6 +257,15 @@
                    !blkio->Media->MediaPresent) {
                        return (false);
                }
+
+               /*
+                * iPXE stub Block IO protocol. Test for "iPXE" in MediaID
+                * and BlockSize.
+                */
+               if (blkio->Media->MediaId =3D=3D 0x69505845U &&
+                   blkio->Media->BlockSize =3D=3D 1) {
+                       return (false);
+               }
        }
        return (true);
 }

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