diff options
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/SOURCES | 3 | ||||
| -rw-r--r-- | firmware/common/crc32-mi4.c | 93 | ||||
| -rw-r--r-- | firmware/export/config-e200.h | 1 | ||||
| -rw-r--r-- | firmware/export/config-h10.h | 1 | ||||
| -rw-r--r-- | firmware/export/config-h10_5gb.h | 1 | ||||
| -rw-r--r-- | firmware/include/crc32-mi4.h | 25 | ||||
| -rw-r--r-- | firmware/rolo.c | 19 |
7 files changed, 143 insertions, 0 deletions
diff --git a/firmware/SOURCES b/firmware/SOURCES index ad802dabcb..fdb457cbed 100644 --- a/firmware/SOURCES +++ b/firmware/SOURCES @@ -23,6 +23,9 @@ debug.c /* Common */ common/atoi.c common/crc32.c +#ifdef MI4_FORMAT +common/crc32-mi4.c +#endif common/ctype.c #ifndef SIMULATOR common/dir.c diff --git a/firmware/common/crc32-mi4.c b/firmware/common/crc32-mi4.c new file mode 100644 index 0000000000..8956364f10 --- /dev/null +++ b/firmware/common/crc32-mi4.c @@ -0,0 +1,93 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id: crc32.c 10464 2006-08-05 20:19:10Z miipekk $ + * + * Copyright (C) 2007 Barry Wardell + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +/* + * We can't use the CRC32 implementation in the firmware library as it uses a + * different polynomial. The polynomial needed is 0xEDB88320L + * + * CRC32 implementation taken from: + * + * efone - Distributed internet phone system. + * + * (c) 1999,2000 Krzysztof Dabrowski + * (c) 1999,2000 ElysiuM deeZine + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +/* based on implementation by Finn Yannick Jacobs */ + + + +/* crc_tab[] -- this crcTable is being build by chksum_crc32GenTab(). + * so make sure, you call it before using the other + * functions! + */ +static unsigned int crc_tab[256]; + +/* chksum_crc() -- to a given block, this one calculates the + * crc32-checksum until the length is + * reached. the crc32-checksum will be + * the result. + */ +unsigned int chksum_crc32 (unsigned char *block, unsigned int length) +{ + register unsigned long crc; + unsigned long i; + + crc = 0; + for (i = 0; i < length; i++) + { + crc = ((crc >> 8) & 0x00FFFFFF) ^ crc_tab[(crc ^ *block++) & 0xFF]; + } + return (crc); +} + +/* chksum_crc32gentab() -- to a global crc_tab[256], this one will + * calculate the crcTable for crc32-checksums. + * it is generated to the polynom [..] + */ + +void chksum_crc32gentab (void) +{ + unsigned long crc, poly; + int i, j; + + poly = 0xEDB88320L; + for (i = 0; i < 256; i++) + { + crc = i; + for (j = 8; j > 0; j--) + { + if (crc & 1) + { + crc = (crc >> 1) ^ poly; + } + else + { + crc >>= 1; + } + } + crc_tab[i] = crc; + } +} diff --git a/firmware/export/config-e200.h b/firmware/export/config-e200.h index 73ff2e69ba..9d4fb1ccef 100644 --- a/firmware/export/config-e200.h +++ b/firmware/export/config-e200.h @@ -136,6 +136,7 @@ /* Define this if you have adjustable CPU frequency */ /*#define HAVE_ADJUSTABLE_CPU_FREQ*/ +#define MI4_FORMAT #define BOOTFILE_EXT "mi4" #define BOOTFILE "rockbox." BOOTFILE_EXT #define OLD_BOOTFILE "rockbox.e200" diff --git a/firmware/export/config-h10.h b/firmware/export/config-h10.h index a5d32ebeaa..b0617eb71e 100644 --- a/firmware/export/config-h10.h +++ b/firmware/export/config-h10.h @@ -158,6 +158,7 @@ /* Define this if you have adjustable CPU frequency */ /*#define HAVE_ADJUSTABLE_CPU_FREQ*/ +#define MI4_FORMAT #define BOOTFILE_EXT "mi4" #define BOOTFILE "rockbox." BOOTFILE_EXT #define OLD_BOOTFILE "rockbox.h10" diff --git a/firmware/export/config-h10_5gb.h b/firmware/export/config-h10_5gb.h index 48d73173ce..37a1a47c7f 100644 --- a/firmware/export/config-h10_5gb.h +++ b/firmware/export/config-h10_5gb.h @@ -141,6 +141,7 @@ /* Define this if you have adjustable CPU frequency */ /*#define HAVE_ADJUSTABLE_CPU_FREQ*/ +#define MI4_FORMAT #define BOOTFILE_EXT "mi4" #define BOOTFILE "rockbox." BOOTFILE_EXT #define OLD_BOOTFILE "rockbox.h10" diff --git a/firmware/include/crc32-mi4.h b/firmware/include/crc32-mi4.h new file mode 100644 index 0000000000..e7f3229d5b --- /dev/null +++ b/firmware/include/crc32-mi4.h @@ -0,0 +1,25 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id: crc32.h 10464 2006-08-05 20:19:10Z miipekk $ + * + * Copyright (C) 2007 Barry Wardell + * + * All files in this archive are subject to the GNU General Public License. + * See the file COPYING in the source tree root for full license agreement. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#ifndef _CRC32_MI4_H +#define _CRC32_MI4_H + +unsigned int chksum_crc32 (unsigned char *block, unsigned int length); +void chksum_crc32gentab (void); + +#endif diff --git a/firmware/rolo.c b/firmware/rolo.c index 0375a7ac82..0b8a4f28ba 100644 --- a/firmware/rolo.c +++ b/firmware/rolo.c @@ -30,6 +30,14 @@ #include "string.h" #include "buffer.h" +#ifdef MI4_FORMAT +#include "crc32-mi4.h" +#undef FIRMWARE_OFFSET_FILE_CRC +#undef FIRMWARE_OFFSET_FILE_DATA +#define FIRMWARE_OFFSET_FILE_CRC 0xC +#define FIRMWARE_OFFSET_FILE_DATA 0x200 +#endif + #if !defined(IRIVER_IFP7XX_SERIES) && \ (CONFIG_CPU != PP5002) && (CONFIG_CPU != S3C2440) /* FIX: this doesn't work on iFP, 3rd Gen ipods */ @@ -152,7 +160,9 @@ int rolo_load(const char* filename) int fd; long length; #if defined(CPU_COLDFIRE) || defined(CPU_PP) +#if !defined(MI4_FORMAT) int i; +#endif unsigned long checksum,file_checksum; #else long file_length; @@ -189,8 +199,11 @@ int rolo_load(const char* filename) return -1; } +#if !defined(MI4_FORMAT) /* Rockbox checksums are big-endian */ file_checksum = betoh32(file_checksum); +#endif + #ifdef CPU_PP cpu_message = COP_REBOOT; COP_CTL = PROC_WAKE; @@ -208,11 +221,17 @@ int rolo_load(const char* filename) return -1; } +#ifdef MI4_FORMAT + /* Check CRC32 to see if we have a valid file */ + chksum_crc32gentab(); + checksum = chksum_crc32 (audiobuf, length); +#else checksum = MODEL_NUMBER; for(i = 0;i < length;i++) { checksum += audiobuf[i]; } +#endif /* Verify checksum against file header */ if (checksum != file_checksum) { |