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57 lines
1.2 KiB
Bash
Executable File
57 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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# tested on Ubuntu 18.04 & macOS 10.14
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# To run on macOS, first:
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# brew install gptfdisk
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set -e
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if [ "x$2" == "x" ]; then
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echo Usage: $0 in out
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exit 1
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fi
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# Parameters
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RAW=$1
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IMG=$2
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BS=512
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RAW_START=2048
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# Relevant partition type codes
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BBL=2E54B353-1271-4842-806F-E436D6AF6985
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FSBL=5B193300-FC78-40CD-8002-E86C45580B47
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if [[ `uname` == "Darwin" ]]; then
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M=m
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RAW_SIZE=`stat -f%z ${RAW}`
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type sgdisk || { echo "Try: brew install gptfdisk"; exit 1; }
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else
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M=M
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RAW_SIZE=`du -b ${RAW} | cut -d " " -f1`
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fi
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echo Input file is ${RAW_SIZE} bytes.
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RAW_BLOCKS=$(((${RAW_SIZE} + ${BS} - 1) / ${BS}))
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RAW_END=$((${RAW_START} + ${RAW_BLOCKS} - 1))
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echo Start=${RAW_START}
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echo Blocks=${RAW_BLOCKS}
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echo End=${RAW_END}
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echo Creating an image file...
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dd if=/dev/zero of=${IMG} bs=${BS} count=$((${RAW_END} + 128))
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echo Partitioning the image...
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sgdisk --clear \
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--new=1:${RAW_START}:${RAW_END} \
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--change-name=1:bootloader \
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--typecode=1:${BBL} \
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-p ${IMG}
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echo Writing bootloader into the image...
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dd if=${RAW} of=${IMG} conv=notrunc bs=${BS} seek=${RAW_START} count=${RAW_BLOCKS}
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echo Done.
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echo Use \"dd if=${IMG} of=/dev/XXX\" to write the image to a real SD card.
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