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diff --git a/ubi-utils/old-utils/doc/unubi.roff b/ubi-utils/old-utils/doc/unubi.roff new file mode 100644 index 0000000..6cebc46 --- /dev/null +++ b/ubi-utils/old-utils/doc/unubi.roff @@ -0,0 +1,123 @@ +.TH UNUBI 1 "NOVEMBER 2006" FSP "FSP Flashutils" +.SH NAME +unubi \- extract volumes/eraseblocks from a raw\-UBI image +.SH SYNOPSIS +\fBunubi [\-aevEV] [\-d \fIout\-dir\fB] [\-r \fIvolume\-id\fB] +[\-b \fIblock\-size\fB] \fIimage\-file +.SH DESCRIPTION +.PP +\fBunubi\fR reads an image file containing blocks of UBI headers and data +(such as produced from \fBnand2bin\fR) and rebuilds the volumes within. +The default operation (when no flags are given) is to rebuild all valid +volumes found in the image. \fBunubi\fR can also read straight from the +onboard MTD device (ex. /dev/mtdblock/NAND). +.SH OPTIONS +.IP "\-a, \-\-analyze" +When flagged, analysis files are generated within the output directory. These +may include tables and or graphs detailing statistics gathered from the +eraseblock data. Files are prefixed `analysis_'. + +See \fBANALYSIS\fR. +.IP "\-b, \-\-blocksize \fIblock\-size\fR" +Specify in bytes the \fIimage\-file\fR eraseblock size. Sizes may be +postfixed with `KiB' or `MiB' to indicate mebibytes or kibibytes +respectively. Default is 128KiB. +.IP "\-d, \-\-dir \fIoutput\-dir\fR" +Specify the output directory. If no directory is specified, the default +is `unubi_\fIimage\-file\fR' within the curent working directory. If the +attempt to create the output directory fails, +.B unubi +will try to create it in /tmp before aborting. +.IP "\-e, \-\-eb\-split" +When flagged, images are created for each eraseblock in \fIimage\-file\fR +regardless of its validity. Each image is the complete eraseblock, including +headers and any space to the end of the eraseblock after where the data may +end. + +Invalid images are named `ebEEEE', where EEEE is the physical index of the +eraseblock in the image. Valid images are named `ebEEEE_VVV_NNN_RRR' where +VVV is the known volume ID, NNN is the logical number and RRR is the version +of the eraseblock data. Note that the version number is in hexadecimal. + +Invalid images may also contain this postfix, if the data in the header +could be valid (ie. the header contains a resonable volume ID, but the +header and/or data CRCs are not valid). If this is the case, images are named +`ebEEEE_VVV_NNN_RRR.reason', so as to distinguish known values from +non\-definite ones. + +See \fBREASON SUFFIXES\fR. +.IP "\-r, \-\-rebuild \fIvolume\-id\fR" +Specify a volume to rebuild. Can be used successively to specify +several volumes to be rebuilt. + +Images are named `volumeVVV' where VVV is the volume ID. For each missing +eraseblock, an error message will be printed. +.IP "\-v, \-\-vol\-split" +When flagged, images are created for each valid eraseblock in +\fIimage\-file\fR. Since a vaild eraseblock will have a defined data start and +data length, only this range will make up the image. + +Images are named `volVVV_NNN_RRR_EEEE', where, for the data in the eraseblock, +VVV is the volume ID, NNN is the logical number, RRR is the version and EEEE +is the phyisical index of the eraseblock in the image. +.IP "\-V, \-\-vol\-split!" +Same as above, only all images are the complete eraseblock (including headers, +and raw data, even past the point where the data is supposed to end). +Overrides \-v when both \-v and \-V are flagged. +.SH ANALYSIS +The following files will be generated during the analysis: +.IP "analysis_ec_hdr.data" +A space delimited table with these two columns for each eraseblock: the +eraseblock's index or physical position in the image, and the eraseblock's +erase count. The third column contains the erase count data sorted. +.IP "analysis_vid_hdr.data" +A space delimited table with these four colums for each eraseblock: the +volume ID, the volume logical number, the leb version, and the data size. +In addition there are a normalized column representing the volume ID and +volume logical number, a normalized column representing the leb version, and +a normalized column representing the data_size. These normalized columns are +used to better draw the the gnuplot image. +.IP "analysis_ec_hdr.plot" +A gnuplot script for quickly viewing a sample output from the respective .data +file. +.IP "analysis_vid_hdr.plot" +A gnuplot script for quickly viewing a sample output from the respective .data +file. +.SH REASONS SUFFIXES +When \-\-eb\-split produces possibly invalid, though usable, eraseblocks, the +known reason suffixes are: +.IP ".ec_magic" +The erase counter header did not contain a valid magic field. +.IP ".ec_hdr_crc" +The erase counter header did not contain a vaild header CRC field. +.IP ".vid_magic" +The volume ID header did not contain a valid magic field. +.IP ".vid_hdr_crc" +The volume ID header did not contain a valid header CRC field. +.IP ".data_crc" +The volume ID header did not contain a valid data CRC field. +.SH EXAMPLES +To extract and rebuild all valid volumes from demo.img (note the output +directory will be /home/user/unubi_demo.img): +.sp 1 +.RS +.B /home/user# unubi demo.img +.sp 1 +.RE +To analyze demo.img as well as extract and rebuild volume 7: +.sp 1 +.RS +.B /home/user# unubi \-a \-r 7 demo.img +.sp 1 +.RE +To split demo.img into raw images for each eraseblock into the folder +/var/eraseblocks: +.sp 1 +.RS +.B /home/user# unubi \-e \-d /var/eraseblocks demo.img +.SH AUTHORS +Frank Haverkamp <haver@vnet.ibm.com> +.sp 0 +Drake Dowsett <dowsett@de.ibm.com> +.SH CONTACT +Andreas Arnez <arnez@de.ibm.com> |