Tom Rini | 83d290c | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Lei Wen | 88d52c6 | 2012-09-28 04:26:46 +0000 | [diff] [blame] | 2 | /* |
| 3 | * (C) Copyright 2012 |
| 4 | * Lei Wen <leiwen@marvell.com>, Marvell Inc. |
Lei Wen | 88d52c6 | 2012-09-28 04:26:46 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <watchdog.h> |
| 9 | #include <command.h> |
Simon Glass | 0c670fc | 2019-08-01 09:46:36 -0600 | [diff] [blame^] | 10 | #include <gzip.h> |
Lei Wen | 88d52c6 | 2012-09-28 04:26:46 +0000 | [diff] [blame] | 11 | #include <image.h> |
| 12 | #include <malloc.h> |
Simon Glass | 6e29518 | 2015-09-02 17:24:57 -0600 | [diff] [blame] | 13 | #include <memalign.h> |
Lei Wen | 88d52c6 | 2012-09-28 04:26:46 +0000 | [diff] [blame] | 14 | #include <u-boot/zlib.h> |
| 15 | #include "zlib/zutil.h" |
| 16 | |
| 17 | #ifndef CONFIG_GZIP_COMPRESS_DEF_SZ |
| 18 | #define CONFIG_GZIP_COMPRESS_DEF_SZ 0x200 |
| 19 | #endif |
| 20 | #define ZALLOC_ALIGNMENT 16 |
| 21 | |
| 22 | static void *zalloc(void *x, unsigned items, unsigned size) |
| 23 | { |
| 24 | void *p; |
| 25 | |
| 26 | size *= items; |
| 27 | size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1); |
| 28 | |
Marcel Ziswiler | 4519668 | 2015-08-18 13:06:37 +0200 | [diff] [blame] | 29 | p = malloc_cache_aligned(size); |
Lei Wen | 88d52c6 | 2012-09-28 04:26:46 +0000 | [diff] [blame] | 30 | |
| 31 | return (p); |
| 32 | } |
| 33 | |
| 34 | static void zfree(void *x, void *addr, unsigned nb) |
| 35 | { |
| 36 | free (addr); |
| 37 | } |
| 38 | |
| 39 | int gzip(void *dst, unsigned long *lenp, |
| 40 | unsigned char *src, unsigned long srclen) |
| 41 | { |
| 42 | return zzip(dst, lenp, src, srclen, 1, NULL); |
| 43 | } |
| 44 | |
| 45 | /* |
| 46 | * Compress blocks with zlib |
| 47 | */ |
| 48 | int zzip(void *dst, unsigned long *lenp, unsigned char *src, |
| 49 | unsigned long srclen, int stoponerr, |
| 50 | int (*func)(unsigned long, unsigned long)) |
| 51 | { |
| 52 | z_stream s; |
| 53 | int r, flush, orig, window; |
| 54 | unsigned long comp_len, left_len; |
| 55 | |
| 56 | if (!srclen) |
| 57 | return 0; |
| 58 | |
| 59 | #ifndef CONFIG_GZIP |
| 60 | window = MAX_WBITS; |
| 61 | #else |
| 62 | window = 2 * MAX_WBITS; |
| 63 | #endif |
| 64 | orig = *lenp; |
| 65 | s.zalloc = zalloc; |
| 66 | s.zfree = zfree; |
| 67 | s.opaque = Z_NULL; |
| 68 | |
| 69 | r = deflateInit2_(&s, Z_BEST_SPEED, Z_DEFLATED, window, |
| 70 | DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, |
| 71 | ZLIB_VERSION, sizeof(z_stream)); |
| 72 | if (r != Z_OK) { |
| 73 | printf ("Error: deflateInit2_() returned %d\n", r); |
| 74 | return -1; |
| 75 | } |
| 76 | |
| 77 | while (srclen > 0) { |
| 78 | comp_len = (srclen > CONFIG_GZIP_COMPRESS_DEF_SZ) ? |
| 79 | CONFIG_GZIP_COMPRESS_DEF_SZ : srclen; |
| 80 | |
| 81 | s.next_in = src; |
| 82 | s.avail_in = comp_len; |
| 83 | flush = (srclen > CONFIG_GZIP_COMPRESS_DEF_SZ)? |
| 84 | Z_NO_FLUSH : Z_FINISH; |
| 85 | |
| 86 | do { |
| 87 | left_len = (*lenp > CONFIG_GZIP_COMPRESS_DEF_SZ) ? |
| 88 | CONFIG_GZIP_COMPRESS_DEF_SZ : *lenp; |
| 89 | s.next_out = dst; |
| 90 | s.avail_out = left_len; |
| 91 | r = deflate(&s, flush); |
| 92 | if (r == Z_STREAM_ERROR && stoponerr == 1) { |
| 93 | printf("Error: deflate() returned %d\n", r); |
| 94 | r = -1; |
| 95 | goto bail; |
| 96 | } |
| 97 | if (!func) { |
| 98 | dst += (left_len - s.avail_out); |
| 99 | *lenp -= (left_len - s.avail_out); |
| 100 | } else if (left_len - s.avail_out > 0) { |
| 101 | r = func((unsigned long)dst, |
| 102 | left_len - s.avail_out); |
| 103 | if (r < 0) |
| 104 | goto bail; |
| 105 | } |
| 106 | } while (s.avail_out == 0 && (*lenp > 0)); |
| 107 | if (s.avail_in) { |
| 108 | printf("Deflate failed to consume %u bytes", s.avail_in); |
| 109 | r = -1; |
| 110 | goto bail; |
| 111 | } |
| 112 | if (*lenp == 0) { |
| 113 | printf("Deflate need more space to compress " |
| 114 | "left %lu bytes\n", srclen); |
| 115 | r = -1; |
| 116 | goto bail; |
| 117 | } |
| 118 | srclen -= comp_len; |
| 119 | src += comp_len; |
| 120 | } |
| 121 | |
| 122 | r = 0; |
| 123 | bail: |
| 124 | deflateEnd(&s); |
| 125 | *lenp = orig - *lenp; |
| 126 | return r; |
| 127 | } |