From b21da18bdfb267447b54107d3cca9da89055b608 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Fri, 11 Mar 2011 17:35:59 +0000 Subject: 2011-03-11 Joel Sherrill * Makefile: Add new example of untar to load initial contents of IMFS. * crc/.cvsignore, crc/LICENSE, crc/Makefile, crc/README, crc/crc.h, crc/crc_32.c, crc/init.c, crc/sniptype.h, crc/rootfs/image.img: New files. --- file_io/ChangeLog | 7 ++ file_io/Makefile | 2 +- file_io/crc/.cvsignore | 4 + file_io/crc/LICENSE | 11 +++ file_io/crc/Makefile | 41 ++++++++++ file_io/crc/README | 9 +++ file_io/crc/crc.h | 57 ++++++++++++++ file_io/crc/crc_32.c | 173 +++++++++++++++++++++++++++++++++++++++++++ file_io/crc/init.c | 69 +++++++++++++++++ file_io/crc/rootfs/image.img | Bin 0 -> 91605 bytes file_io/crc/sniptype.h | 37 +++++++++ 11 files changed, 409 insertions(+), 1 deletion(-) create mode 100644 file_io/crc/.cvsignore create mode 100755 file_io/crc/LICENSE create mode 100644 file_io/crc/Makefile create mode 100644 file_io/crc/README create mode 100644 file_io/crc/crc.h create mode 100644 file_io/crc/crc_32.c create mode 100644 file_io/crc/init.c create mode 100644 file_io/crc/rootfs/image.img create mode 100644 file_io/crc/sniptype.h (limited to 'file_io') diff --git a/file_io/ChangeLog b/file_io/ChangeLog index 5eff6a7..5172e2c 100644 --- a/file_io/ChangeLog +++ b/file_io/ChangeLog @@ -1,3 +1,10 @@ +2011-03-11 Joel Sherrill + + * Makefile: Add new example of untar to load initial contents of IMFS. + * crc/.cvsignore, crc/LICENSE, crc/Makefile, crc/README, crc/crc.h, + crc/crc_32.c, crc/init.c, crc/sniptype.h, crc/rootfs/image.img: New + files. + 2010-04-12 Joel Sherrill * fdopen/test.c: Add include of unistd.h for close(). diff --git a/file_io/Makefile b/file_io/Makefile index 1a3f6ea..fd0fb96 100644 --- a/file_io/Makefile +++ b/file_io/Makefile @@ -6,4 +6,4 @@ include $(RTEMS_MAKEFILE_PATH)/Makefile.inc include $(RTEMS_CUSTOM) include $(RTEMS_ROOT)/make/directory.cfg -SUBDIRS = fdopen filerdback repeated_opens +SUBDIRS = fdopen filerdback repeated_opens crc diff --git a/file_io/crc/.cvsignore b/file_io/crc/.cvsignore new file mode 100644 index 0000000..e1e4b63 --- /dev/null +++ b/file_io/crc/.cvsignore @@ -0,0 +1,4 @@ +o-optimize +FilesystemImage +FilesystemImage.c +FilesystemImage.h diff --git a/file_io/crc/LICENSE b/file_io/crc/LICENSE new file mode 100755 index 0000000..deb9009 --- /dev/null +++ b/file_io/crc/LICENSE @@ -0,0 +1,11 @@ +# +# $Id$ +# + +The CRC32 code is from http://www.snippets.org/. This is the following files: + +crc_32.c +crc.h +sniptype.h + +This code is FREE with no restrictions. diff --git a/file_io/crc/Makefile b/file_io/crc/Makefile new file mode 100644 index 0000000..10153b3 --- /dev/null +++ b/file_io/crc/Makefile @@ -0,0 +1,41 @@ +# +# $Id$ +# + +# +# RTEMS_MAKEFILE_PATH is typically set in an environment variable +# + +PGM=${ARCH}/crc.exe + +# optional managers required +MANAGERS=all + +# C source names +CSRCS = crc_32.c init.c FilesystemImage.c +COBJS = $(CSRCS:%.c=${ARCH}/%.o) + +CLEAN_ADDITIONS += stamp-fs-image +CLEAN_ADDITIONS += FilesystemImage FilesystemImage.c FilesystemImage.h + +include $(RTEMS_MAKEFILE_PATH)/Makefile.inc +include $(RTEMS_CUSTOM) +include $(PROJECT_ROOT)/make/leaf.cfg + +OBJS= $(COBJS) $(CXXOBJS) $(ASOBJS) + +all: ${ARCH} $(OBJS) $(PGM) + +$(ARCH)/init.o: init.c stamp-fs-image + +FilesystemImage: $(ARCH) rootfs/image.img + cd rootfs ; \ + tar cf ../FilesystemImage --exclude CVS --exclude .cvsignore . + +stamp-fs-image: $(ARCH) FilesystemImage + $(PROJECT_ROOT)/bin/rtems-bin2c FilesystemImage FilesystemImage + ls -l Filesystem* + touch stamp-fs-image + +$(PGM): $(OBJS) + $(make-exe) diff --git a/file_io/crc/README b/file_io/crc/README new file mode 100644 index 0000000..e29b5a5 --- /dev/null +++ b/file_io/crc/README @@ -0,0 +1,9 @@ +# +# $Id$ +# + +This is a simple example which illustrates how to use the +In-Memory File System (IMFS) in conjunction with "untar" to +load the initial contents. + +Thanks to Gedare Bloom for the code this is based upon. diff --git a/file_io/crc/crc.h b/file_io/crc/crc.h new file mode 100644 index 0000000..e6f7a3d --- /dev/null +++ b/file_io/crc/crc.h @@ -0,0 +1,57 @@ +/* +++Date last modified: 05-Jul-1997 */ + +/* +** CRC.H - header file for SNIPPETS CRC and checksum functions +*/ + +#ifndef CRC__H +#define CRC__H + +#include /* For size_t */ +#include "sniptype.h" /* For BYTE, WORD, DWORD */ + +/* +** File: ARCCRC16.C +*/ + +void init_crc_table(void); +WORD crc_calc(WORD crc, char *buf, unsigned nbytes); +void do_file(char *fn); + +/* +** File: CRC-16.C +*/ + +WORD crc16(char *data_p, WORD length); + +/* +** File: CRC-16F.C +*/ + +WORD updcrc(WORD icrc, BYTE *icp, size_t icnt); + +/* +** File: CRC_32.C +*/ + +#define UPDC32(octet,crc) (crc_32_tab[((crc)^((BYTE)octet)) & 0xff] ^ ((crc) >> 8)) + +DWORD updateCRC32(unsigned char ch, DWORD crc); +Boolean_T crc32file(char *name, DWORD *crc, long *charcnt); +DWORD crc32buf(char *buf, size_t len); + +/* +** File: CHECKSUM.C +*/ + +unsigned checksum(void *buffer, size_t len, unsigned int seed); + +/* +** File: CHECKEXE.C +*/ + +void checkexe(char *fname); + + + +#endif /* CRC__H */ diff --git a/file_io/crc/crc_32.c b/file_io/crc/crc_32.c new file mode 100644 index 0000000..ebeb5e0 --- /dev/null +++ b/file_io/crc/crc_32.c @@ -0,0 +1,173 @@ +/* +++Date last modified: 05-Jul-1997 */ + +/* Crc - 32 BIT ANSI X3.66 CRC checksum files */ + +#include +#include "crc.h" + +#ifdef __TURBOC__ + #pragma warn -cln +#endif + +/**********************************************************************\ +|* Demonstration program to compute the 32-bit CRC used as the frame *| +|* check sequence in ADCCP (ANSI X3.66, also known as FIPS PUB 71 *| +|* and FED-STD-1003, the U.S. versions of CCITT's X.25 link-level *| +|* protocol). The 32-bit FCS was added via the Federal Register, *| +|* 1 June 1982, p.23798. I presume but don't know for certain that *| +|* this polynomial is or will be included in CCITT V.41, which *| +|* defines the 16-bit CRC (often called CRC-CCITT) polynomial. FIPS *| +|* PUB 78 says that the 32-bit FCS reduces otherwise undetected *| +|* errors by a factor of 10^-5 over 16-bit FCS. *| +\**********************************************************************/ + +/* Need an unsigned type capable of holding 32 bits; */ + +typedef DWORD UNS_32_BITS; + +/* Copyright (C) 1986 Gary S. Brown. You may use this program, or + code or tables extracted from it, as desired without restriction.*/ + +/* First, the polynomial itself and its table of feedback terms. The */ +/* polynomial is */ +/* X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 */ +/* Note that we take it "backwards" and put the highest-order term in */ +/* the lowest-order bit. The X^32 term is "implied"; the LSB is the */ +/* X^31 term, etc. The X^0 term (usually shown as "+1") results in */ +/* the MSB being 1. */ + +/* Note that the usual hardware shift register implementation, which */ +/* is what we're using (we're merely optimizing it by doing eight-bit */ +/* chunks at a time) shifts bits into the lowest-order term. In our */ +/* implementation, that means shifting towards the right. Why do we */ +/* do it this way? Because the calculated CRC must be transmitted in */ +/* order from highest-order term to lowest-order term. UARTs transmit */ +/* characters in order from LSB to MSB. By storing the CRC this way, */ +/* we hand it to the UART in the order low-byte to high-byte; the UART */ +/* sends each low-bit to hight-bit; and the result is transmission bit */ +/* by bit from highest- to lowest-order term without requiring any bit */ +/* shuffling on our part. Reception works similarly. */ + +/* The feedback terms table consists of 256, 32-bit entries. Notes: */ +/* */ +/* 1. The table can be generated at runtime if desired; code to do so */ +/* is shown later. It might not be obvious, but the feedback */ +/* terms simply represent the results of eight shift/xor opera- */ +/* tions for all combinations of data and CRC register values. */ +/* */ +/* 2. The CRC accumulation logic is the same for all CRC polynomials, */ +/* be they sixteen or thirty-two bits wide. You simply choose the */ +/* appropriate table. Alternatively, because the table can be */ +/* generated at runtime, you can start by generating the table for */ +/* the polynomial in question and use exactly the same "updcrc", */ +/* if your application needn't simultaneously handle two CRC */ +/* polynomials. (Note, however, that XMODEM is strange.) */ +/* */ +/* 3. For 16-bit CRCs, the table entries need be only 16 bits wide; */ +/* of course, 32-bit entries work OK if the high 16 bits are zero. */ +/* */ +/* 4. The values must be right-shifted by eight bits by the "updcrc" */ +/* logic; the shift must be unsigned (bring in zeroes). On some */ +/* hardware you could probably optimize the shift in assembler by */ +/* using byte-swap instructions. */ + +static UNS_32_BITS crc_32_tab[] = { /* CRC polynomial 0xedb88320 */ +0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, +0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, +0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, +0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, +0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, +0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, +0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, +0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, +0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, +0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, +0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, +0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, +0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, +0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, +0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, +0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, +0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, +0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, +0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, +0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, +0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, +0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, +0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, +0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, +0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, +0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, +0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, +0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, +0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, +0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, +0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, +0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, +0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, +0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, +0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, +0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, +0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, +0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, +0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, +0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, +0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, +0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, +0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d +}; + +DWORD updateCRC32(unsigned char ch, DWORD crc) +{ + return UPDC32(ch, crc); +} + +Boolean_T crc32file(char *name, DWORD *crc, long *charcnt) +{ + register FILE *fin; + register DWORD oldcrc32; + register int c; + + oldcrc32 = 0xFFFFFFFF; *charcnt = 0; +#ifdef MSDOS + if ((fin=fopen(name, "rb"))==NULL) +#else + if ((fin=fopen(name, "r"))==NULL) +#endif + { + perror(name); + return Error_; + } + while ((c=getc(fin))!=EOF) + { + ++*charcnt; + oldcrc32 = UPDC32(c, oldcrc32); + } + + if (ferror(fin)) + { + perror(name); + *charcnt = -1; + } + fclose(fin); + + *crc = oldcrc32 = ~oldcrc32; + return Success_; +} + +DWORD crc32buf(char *buf, size_t len) +{ + register DWORD oldcrc32; + + oldcrc32 = 0xFFFFFFFF; + + for ( ; len; --len, ++buf) + { + oldcrc32 = UPDC32(*buf, oldcrc32); + } + + return ~oldcrc32; + +} + + diff --git a/file_io/crc/init.c b/file_io/crc/init.c new file mode 100644 index 0000000..99e0fe9 --- /dev/null +++ b/file_io/crc/init.c @@ -0,0 +1,69 @@ +/* + * COPYRIGHT (c) 1989-2011. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + + + +#include +#include + +#include +#include + +#include "FilesystemImage.h" +#include + +/* sha-specific includes */ +#include +#include +#include "crc.h" +#include + +rtems_task Init( + rtems_task_argument ignored +) +{ + char in_file[20] = "/image.img"; + DWORD crc; + long charcnt; + + puts( "\n\n*** untar/imfs/crc example ***" ); + + printf("Unpacking tar filesystem\nThis may take awhile...\n"); + if(Untar_FromMemory(FilesystemImage, FilesystemImage_size) != 0) { + printf("Can't unpack tar filesystem\n"); + exit(1); + } + + crc32file(in_file,&crc, &charcnt); + printf("%08lX %7ld %s\n", crc, charcnt, in_file); + + printf( "*** end of demonstration ***\n" ); + exit( 0 ); +} + +/* configuration */ +/* drivers */ +#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER + +/* filesystem */ +#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM +#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 40 +#define CONFIGURE_IMFS_MEMFILE_BYTES_PER_BLOCK 512 + +/* tasks */ +#define CONFIGURE_MAXIMUM_TASKS 4 +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE +#define CONFIGURE_EXTRA_TASK_STACKS (3 * RTEMS_MINIMUM_STACK_SIZE) + +#define CONFIGURE_INIT +#include +/* end of file */ diff --git a/file_io/crc/rootfs/image.img b/file_io/crc/rootfs/image.img new file mode 100644 index 0000000..a755f62 Binary files /dev/null and b/file_io/crc/rootfs/image.img differ diff --git a/file_io/crc/sniptype.h b/file_io/crc/sniptype.h new file mode 100644 index 0000000..899ee5b --- /dev/null +++ b/file_io/crc/sniptype.h @@ -0,0 +1,37 @@ +/* +++Date last modified: 05-Jul-1997 */ + +/* +** SNIPTYPE.H - Include file for SNIPPETS data types and commonly used macros +*/ + +#ifndef SNIPTYPE__H +#define SNIPTYPE__H + +#include /* For free() */ +#include /* For NULL & strlen() */ + +typedef enum {Error_ = -1, Success_, False_ = 0, True_} Boolean_T; + +/*#if !defined(WIN32) && !defined(_WIN32) && !defined(__NT__) \ + && !defined(_WINDOWS) + #if !defined(OS2)*/ + typedef unsigned char BYTE; + typedef unsigned long DWORD; +/* #endif*/ + typedef unsigned short WORD; +/*#else + #define WIN32_LEAN_AND_MEAN + #define NOGDI + #define NOSERVICE + #undef INC_OLE1 + #undef INC_OLE2 + #include + #define HUGE + #endif*/ + +#define NUL '\0' +#define LAST_CHAR(s) (((char *)s)[strlen(s) - 1]) +#define TOBOOL(x) (!(!(x))) +#define FREE(p) (free(p),(p)=NULL) + +#endif /* SNIPTYPE__H */ -- cgit v1.2.3