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Add 'generic' flash images. This is for projects producing generic

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images that are of a certain size.  The geometery is bogus, but that
doesn't matter since the new packet mode onviates the need to get the
geometry right.
This commit is contained in:
imp 2011-02-10 23:36:39 +00:00
parent 6bdddc88cd
commit 32d5960531
1 changed files with 43 additions and 1 deletions
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44
tools/tools/nanobsd/FlashDevice.sub
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@ -203,10 +203,52 @@ sub_FlashDevice () {
;;
esac
;;
# Generic flash media. It assumes that we're booting using packet
# mode so the HEADS and SECTS don't matter. The truncation of the
# size to a slightly lower number is intentional to be conservative
# (eg, 1 sector smaller than N GB is always smaller than any flash
# claiming to be N GB, but wastes a little space sometimes when 1GB
# really means 1GiB). This is intended to be used when producing
# generic images for anybody to boot. Media sizes are specified 'Xg'
# for X GB (10^9 bytes) flash or Xm for X MB (10^6 bytes) flash.
# Power of 2 variants can be specified with gi or mi for GiB and MiB
# sizeed flash and don't try to be conservative (use with caution).
generic)
case $a2 in
*.*) # Catch unsupported 1.5g case, since expr can't
# cope with floats.
echo "Unsupported generic size $a2"
exit 2
;;
*m)
NANO_HEADS=16
NANO_SECTS=63
NANO_MEDIASIZE=`expr -e ${a2%m} \* 1000000 / 512`
;;
*g)
NANO_HEADS=16
NANO_SECTS=63
NANO_MEDIASIZE=`expr -e ${a2%g} \* 1000000000 / 512`
;;
*mi)
NANO_HEADS=16
NANO_SECTS=63
NANO_MEDIASIZE=`expr -e ${a2%mi} \* 1024 \* 1024 / 512`
;;
*gi)
NANO_HEADS=16
NANO_SECTS=63
NANO_MEDIASIZE=`expr -e ${a2%gi} \* 1024 \* 1024 \* 1024 / 512`
;;
*)
echo "Unsupported generic size $a2"
exit 2
;;
esac
;;
*)
echo "Unknown Flash manufacturer"
exit 2
;;
esac
}