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21 lines
919 B
Plaintext
21 lines
919 B
Plaintext
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FIRST... See the dedication in the decompress_bunzip2.c file as it applies
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here too. Donations to hospice in Toni's memory would be appreciated.
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As far as the code goes... the bzImage is just a bzip'd kernel image with
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a small gzip'd decompressor/loader stuck on front. CFE ungzip's the loader
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app which then relocates the bunzip decompressor into higher memory and
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bunzip's the compressed kernel directly from flash. Then the instruction
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cache is flushed (to remove traces of the loader) and the kernel is executed.
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Of course, a better approach would be to add bunzip decompression to CFE.
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Notes...
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1) Instruction cache size and linesize are hardcoded (see the #warning).
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2) Currently assumes at least 16M or ram.
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3) Thanks to Mike Baker mbm at alt dot org for bouncing ideas back
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and forth as well as diagnosing the last (icache) bug.
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Manuel Novoa III <mjn3@codepoet.org> May 30, 2004
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