Author: quozl Date: Wed Jul 18 04:56:18 2012 New Revision: 3068 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3068
Log: disklabel - support ISO 9660 images on non-optical drives such as USB flash and hard drives, by using a logical sector offset to the primary volume descriptor that is consistent with the 512 byte sector size on these devices. ISO 9660:1999 6.1.2 specifies minimum logical sector size, and an offset of 16 sectors to the primary volume descriptor, but does not specify arrangement of data on devices that are not a CD-ROM. Common use is to place the image on other devices in the same way it appears on CD-ROM. #12018
Modified: ofw/disklabel/common.fth ofw/fs/cdfs/partition.fth
Modified: ofw/disklabel/common.fth ============================================================================== --- ofw/disklabel/common.fth Mon Jul 16 02:53:10 2012 (r3067) +++ ofw/disklabel/common.fth Wed Jul 18 04:56:18 2012 (r3068) @@ -19,7 +19,7 @@
0 instance value sector-offset
-\ For ISO-9660 CD-ROMs +\ For ISO-9660 CD-ROMs, ISO-9660 flash or hard drives, and GPT : read-hw-sector ( sector# -- ) sector-offset + /sector um* " seek" $call-parent abort" Seek failed" sector-buf /sector " read" $call-parent /sector <> abort" Read failed"
Modified: ofw/fs/cdfs/partition.fth ============================================================================== --- ofw/fs/cdfs/partition.fth Mon Jul 16 02:53:10 2012 (r3067) +++ ofw/fs/cdfs/partition.fth Wed Jul 18 04:56:18 2012 (r3068) @@ -4,7 +4,8 @@ \ Returns true if the disk or partition is an ISO 9660 file \ system volume, as determined by reading the primary volume descriptor. : iso-9660? ( -- flag ) - d# 16 ['] read-hw-sector catch if drop false exit then + d# 16 /sector h# 200 = if 4* then + ['] read-hw-sector catch if drop false exit then sector-buf c@ 1 = sector-buf 1+ 5 " CD001" $= and dup if ( flag ) iso-type to partition-type
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