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99 lines
3.5 KiB
99 lines
3.5 KiB
#!/bin/sh |
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# Translate a Mu program to a bootable disk image. |
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# |
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# This script uses emulation, so it does not require x86 or Linux. However it |
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# is slow. |
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set -e |
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set -v |
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# Map of the Mu code disk |
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export DISK=20160 # 20*16*63 512-byte sectors = almost 10MB |
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dd if=/dev/zero of=code.img count=$DISK |
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# code: sectors 0-8999 |
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# font: sectors 9000-10079 (1080 sectors = space enough for 16k glyphs (1080 * 512 / 34 bytes per glyph)) |
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export FONT=9000 # keep this sync'd with boot.subx |
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# debug: sector 10080 onwards |
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export DEBUG=10080 # keep this sync'd with abort.subx |
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## Code |
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cat $* [0-9]*.mu |linux/bootstrap/bootstrap run linux/mu > a.subx |
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cat boot.subx mu-init.subx [0-9]*.subx a.subx |linux/bootstrap/bootstrap run linux/braces > a.braces |
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cat a.braces |linux/bootstrap/bootstrap run linux/calls > a.calls |
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cat a.calls |linux/bootstrap/bootstrap run linux/sigils > a.sigils |
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cat a.sigils |linux/bootstrap/bootstrap run linux/tests > a.tests |
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# no assort since baremetal SubX doesn't have segments yet |
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cat a.tests |linux/bootstrap/bootstrap run linux/dquotes > a.dquotes |
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cat a.dquotes |linux/bootstrap/bootstrap run linux/pack > a.pack |
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cat a.pack |linux/bootstrap/bootstrap run linux/survey_baremetal > labels |
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cat a.pack |linux/bootstrap/bootstrap run linux/labels_baremetal labels > a.survey |
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cat a.survey |linux/bootstrap/bootstrap run linux/hex > a.bin |
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dd if=a.bin of=code.img conv=notrunc |
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if [ `wc -c < a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector (keep this sync'd with boot.subx) |
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then |
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echo "a.bin won't all be loaded on boot" |
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exit 1 |
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fi |
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if [ `wc -c < a.bin` -ge 492544 ] # 15 tracks * 63 sectors per track * 512 bytes per sector |
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then |
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echo "a.bin will overwrite BIOS/Video memory; you'll need to adjust boot.subx to load code to some other non-contiguous area of memory" |
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exit 1 |
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fi |
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if [ `wc -c < a.bin` -ge $(($FONT*512)) ] |
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then |
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echo "a.bin will overwrite font in disk" |
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exit 1 |
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fi |
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## Latter half of disk is for debug info |
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if [ `wc -c < labels` -ge 1048576 ] # 8 reads * 256 sectors * 512 bytes per sector |
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then |
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echo "labels won't all be loaded on abort" |
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exit 1 |
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fi |
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if [ `wc -l < labels` -gt 20480 ] # 0x5000 stream capacity in abort.subx |
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then |
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echo "abort will go into infinite regress" |
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exit 1 |
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fi |
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dd if=labels of=code.img seek=$DEBUG conv=notrunc |
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## Font data at another well-defined location |
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cat font.subx |sed 's,/[^ ]*,,' |linux/bootstrap/bootstrap run linux/hex > a.font |
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if [ `wc -c < a.font` -ge 262144 ] # 0x200 sectors * 512 bytes per sector (keep this sync'd with boot.subx) |
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then |
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echo "font won't all be loaded on boot" |
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exit 1 |
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fi |
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if [ `wc -c < a.font` -ge 14680064 ] # 0x00e00000 = 0x00f00000 - 0x00100000 |
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then |
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echo "font is so large it overlaps the ISA memory hole; see https://wiki.osdev.org/Memory_Map_(x86)" |
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exit 1 |
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fi |
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if [ `wc -c < a.font` -ge $(( ($DEBUG - $FONT) * 512 )) ] |
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then |
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echo "font will overwrite debug info in disk" |
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exit 1 |
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fi |
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dd if=a.font of=code.img seek=$FONT conv=notrunc
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