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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/*
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* uncompress.c
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*
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* Copyright (C) 1999 Linus Torvalds
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* Copyright (C) 2000-2002 Transmeta Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* cramfs interfaces to the uncompression library. There's really just
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* three entrypoints:
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*
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* - cramfs_uncompress_init() - called to initialize the thing.
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* - cramfs_uncompress_exit() - tell me when you're done
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* - cramfs_uncompress_block() - uncompress a block.
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*
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* NOTE NOTE NOTE! The uncompression is entirely single-threaded. We
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* only have one stream, and we'll initialize it only once even if it
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* then is used by multiple filesystems.
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*/
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#include <common.h>
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#include <cyclic.h>
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#include <malloc.h>
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#include <watchdog.h>
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#include <u-boot/zlib.h>
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static z_stream stream;
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/* Returns length of decompressed data. */
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int cramfs_uncompress_block (void *dst, void *src, int srclen)
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{
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int err;
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inflateReset (&stream);
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stream.next_in = src;
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stream.avail_in = srclen;
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stream.next_out = dst;
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stream.avail_out = 4096 * 2;
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err = inflate (&stream, Z_FINISH);
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if (err != Z_STREAM_END)
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goto err;
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return stream.total_out;
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err:
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/*printf ("Error %d while decompressing!\n", err); */
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/*printf ("%p(%d)->%p\n", src, srclen, dst); */
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return -1;
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}
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int cramfs_uncompress_init (void)
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{
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int err;
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stream.zalloc = gzalloc;
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stream.zfree = gzfree;
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stream.next_in = 0;
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stream.avail_in = 0;
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#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
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stream.outcb = (cb_func)cyclic_run;
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#else
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stream.outcb = Z_NULL;
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#endif /* CONFIG_HW_WATCHDOG */
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err = inflateInit (&stream);
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if (err != Z_OK) {
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printf ("Error: inflateInit2() returned %d\n", err);
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return -1;
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}
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return 0;
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}
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int cramfs_uncompress_exit (void)
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{
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inflateEnd (&stream);
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return 0;
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}
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