From 36dab07f0226e36856a777f2b8510d865ad642e2 Mon Sep 17 00:00:00 2001 From: patacongo Date: Sat, 16 Jan 2010 02:12:48 +0000 Subject: [PATCH] Add CRC32 to lib/; add tool to make lpc313x bootloader images git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2506 42af7a65-404d-4744-a932-0658087f49c3 --- ChangeLog | 4 + Documentation/NuttX.html | 4 +- configs/ea3131/tools/Makefile | 53 +++++++ configs/ea3131/tools/crc32.c | 123 ++++++++++++++++ configs/ea3131/tools/lpchdr.c | 262 ++++++++++++++++++++++++++++++++++ configs/ea3131/tools/lpchdr.h | 105 ++++++++++++++ include/crc32.h | 82 +++++++++++ lib/Makefile | 4 +- lib/lib_crc32.c | 123 ++++++++++++++++ 9 files changed, 758 insertions(+), 2 deletions(-) create mode 100755 configs/ea3131/tools/Makefile create mode 100755 configs/ea3131/tools/crc32.c create mode 100755 configs/ea3131/tools/lpchdr.c create mode 100755 configs/ea3131/tools/lpchdr.h create mode 100755 include/crc32.h create mode 100755 lib/lib_crc32.c diff --git a/ChangeLog b/ChangeLog index e2dfce0269..fe65af5449 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1039,3 +1039,7 @@ * arch/arm/src/sam3u, arch/arm/include/sam3u, and configs/sam3u-ek - Added the basic framework needed to begin a port for the SAM3U-EK development board. + * lib/lib_crc32.c: Add CRC32 logic by Gary S. Brown to lib/. This is + the larger (but faster) table look-up version of the CRC32 algorithm. + * confgs/ea3131/tools: Added a tool to create a image suitable for + use with the LPC313x bootloader. diff --git a/Documentation/NuttX.html b/Documentation/NuttX.html index 8f9bfd2a99..200a65597b 100644 --- a/Documentation/NuttX.html +++ b/Documentation/NuttX.html @@ -8,7 +8,7 @@

NuttX RTOS

-

Last Updated: December 31, 2009

+

Last Updated: January 15, 2010

@@ -1676,6 +1676,8 @@ nuttx-5.1 2010-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr> * arch/arm/src/sam3u, arch/arm/include/sam3u, and configs/sam3u-ek - Added the basic framework needed to begin a port for the SAM3U-EK development board. + * confgs/ea3131/tools: Added a tool to create a image suitable for + use with the LPC313x bootloader. pascal-2.1 2010-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr> diff --git a/configs/ea3131/tools/Makefile b/configs/ea3131/tools/Makefile new file mode 100755 index 0000000000..6c3362d8c1 --- /dev/null +++ b/configs/ea3131/tools/Makefile @@ -0,0 +1,53 @@ +############################################################################ +# configs/ea3131/tools/Makefile +# +# Copyright (C) 2010 Gregory Nutt. All rights reserved. +# Author: Gregory Nutt +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name NuttX nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +OBJS = lpchdr.o crc32.o +BIN = lpchdr + +CFLAGS += -Wall -g + +all: $(BIN) +.PHONY: clean + +$(OBJS): %.o: %.c + $(CC) -c $(CFLAGS) $< -o $@ + +lpchdr: $(OBJS) + $(CC) -o $@ $^ + +clean: + @rm -f $(BIN) *.o *~ + + diff --git a/configs/ea3131/tools/crc32.c b/configs/ea3131/tools/crc32.c new file mode 100755 index 0000000000..6e98e47244 --- /dev/null +++ b/configs/ea3131/tools/crc32.c @@ -0,0 +1,123 @@ +/************************************************************************************************ + * configs/ea3131/tools/crc32.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * + * The logic in this file was developed by Gary S. Brown: + * + * 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 + * + * - 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 operations for all combinations of data and CRC register values + * + * - The values must be right-shifted by eight bits by the updcrc logic; the shift must + * be u_(bring in zeroes). On some hardware you could probably optimize the shift in + * assembler by using byte-swap instructions polynomial $edb88320 + ************************************************************************************************/ + +/************************************************************************************************ + * Included Files + ************************************************************************************************/ + +#include +#include +#include "lpchdr.h" + +/************************************************************************************************ + * Private Data + ************************************************************************************************/ + +static const uint32_t crc32_tab[] = +{ + 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 +}; + +/************************************************************************************************ + * Public Functions + ************************************************************************************************/ +/************************************************************************************************ + * Name: crc32part + * + * Description: + * Continue CRC calculation on a part of the buffer. + * + ************************************************************************************************/ + +uint32_t crc32part(const uint8_t *src, size_t len, uint32_t crc32val) +{ + size_t i; + + for (i = 0; i < len; i++) + { + crc32val = crc32_tab[(crc32val ^ src[i]) & 0xff] ^ (crc32val >> 8); + } + return crc32val; +} + +/************************************************************************************************ + * Name: crc32 + * + * Description: + * Return a 32-bit CRC of the contents of the 'src' buffer, length 'len' + * + ************************************************************************************************/ + +uint32_t crc32(const uint8_t *src, size_t len) +{ + return crc32part(src, len, 0); +} diff --git a/configs/ea3131/tools/lpchdr.c b/configs/ea3131/tools/lpchdr.c new file mode 100755 index 0000000000..919c16865a --- /dev/null +++ b/configs/ea3131/tools/lpchdr.c @@ -0,0 +1,262 @@ +/************************************************************************************ + * configs/ea3131/tools/lpchdr.c + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************************/ + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "lpchdr.h" + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/************************************************************************************ + * Private Data + ************************************************************************************/ + +static const char *g_infile; +static const char *g_outfile; + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +static void show_usage(const char *progname, int exitcode) +{ + fprintf(stderr, "%s -o \n", progname); + exit(exitcode); +} + +static void parse_args(int argc, char **argv) +{ + int ch; + + while ((ch = getopt(argc, argv, ":o:")) >= 0) + { + switch (ch) + { + case 'o': + g_outfile = optarg; + break; + + case ':': + fprintf(stderr, "Missing option argumen\n"); + show_usage(argv[0], 1); + + case '?': + default: + fprintf(stderr, "Unrecognized option\n"); + show_usage(argv[0], 1); + } + } + + if (optind >= argc) + { + fprintf(stderr, "Missing binary input file name\n"); + show_usage(argv[0], 1); + } + + g_infile = argv[optind]; + optind++; + + if (optind < argc) + { + fprintf(stderr, "Garbage at the end of the command line\n"); + show_usage(argv[0], 1); + } +} + +static uint32_t infilecrc32(int infd, size_t len) +{ + off_t offset; + uint8_t buffer[1024]; + ssize_t nbytes; + size_t bytesread; + uint32_t crc; + + offset = lseek(infd, 0, SEEK_SET); + if (offset == (off_t)-1) + { + fprintf(stderr, "lseek failed: %s\n", strerror(errno)); + exit(4); + } + + crc = 0; + for (bytesread = 0; bytesread < len; bytesread += nbytes) + { + nbytes = read(infd, buffer, 1024); + if (nbytes < 0) + { + fprintf(stderr, "read failed: %s\n", strerror(errno)); + exit(4); + } + else if (nbytes == 0) + { + fprintf(stderr, "Unexpected end-of-file: %s\n", strerror(errno)); + exit(4); + } + else + { + crc = crc32part(buffer, nbytes, crc); + } + } + return crc; +} + +static void writefile(int infd, int outfd, size_t len) +{ + off_t offset; + uint8_t buffer[1024]; + ssize_t nbytesread; + ssize_t nbyteswritten; + size_t totalread; + + offset = lseek(infd, 0, SEEK_SET); + if (offset == (off_t)-1) + { + fprintf(stderr, "lseek failed: %s\n", strerror(errno)); + exit(4); + } + + for (totalread = 0; totalread < len; totalread += nbytesread) + { + nbytesread = read(infd, buffer, 1024); + if (nbytesread < 0) + { + fprintf(stderr, "read failed: %s\n", strerror(errno)); + exit(4); + } + else if (nbytesread == 0) + { + fprintf(stderr, "Unexpected end-of-file: %s\n", strerror(errno)); + exit(4); + } + else + { + nbyteswritten = write(outfd, buffer, nbytesread); + if (nbyteswritten < 0) + { + fprintf(stderr, "write failed: %s\n", strerror(errno)); + exit(4); + } + else if (nbyteswritten != nbytesread) + { + fprintf(stderr, "Short writes not handled\n"); + exit(4); + } + } + } +} + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +int main(int argc, char **argv, char **envp) +{ + struct lpc313x_header_s g_hdr; + struct stat buf; + ssize_t nbytes; + int infd; + int outfd; + int ret; + + /* Parse arguments */ + + parse_args(argc, argv); + + /* Open files */ + + infd = open(g_infile, O_RDONLY); + if (infd < 0) + { + fprintf(stderr, "Failed to open %s for reading: %s\n", g_infile, strerror(errno)); + exit(2); + } + + outfd = open(g_outfile, O_WRONLY|O_CREAT|O_TRUNC, 0644); + if (outfd < 0) + { + fprintf(stderr, "Failed to open %s for writing: %s\n", g_outfile, strerror(errno)); + exit(2); + } + + /* Get the size of the binary file */ + + ret = fstat(infd, &buf); + if (ret < 0) + { + fprintf(stderr, "stat of %s failed: %s\n", g_infile, strerror(errno)); + exit(3); + } + + /* Initialize the header */ + + memset(&g_hdr, 0, sizeof(struct lpc313x_header_s)); + g_hdr.vector = 0xea00001e; /* b 0x11029080 */ + g_hdr.magic = 0x41676d69; + g_hdr.imageType = 0x0000000b; + g_hdr.imageLength = (buf.st_size + sizeof(struct lpc313x_header_s) + 511) & ~0x1ff; + g_hdr.execution_crc32 = infilecrc32(infd, buf.st_size); + g_hdr.header_crc32 = crc32((const uint8_t*)&g_hdr, 0x6c); + + /* Write the header */ + + nbytes = write(outfd, &g_hdr, 0x80); + if (nbytes != 0x80) + { + fprintf(stderr, "write of header to of %s failed: %s\n", g_outfile, strerror(errno)); + exit(4); + } + + /* Copy the input file to the output */ + + writefile(infd, outfd, buf.st_size); + close(infd); + close(outfd); + return 0; +} + + diff --git a/configs/ea3131/tools/lpchdr.h b/configs/ea3131/tools/lpchdr.h new file mode 100755 index 0000000000..036dc8728a --- /dev/null +++ b/configs/ea3131/tools/lpchdr.h @@ -0,0 +1,105 @@ +/************************************************************************************ + * configs/ea3131/tools/lpchdr.h + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************************/ + +#ifndef __CONFIGS_EA3131_TOOLS_BINFMT_H +#define __CONFIGS_EA3131_TOOLS_BINFMT_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/************************************************************************************ + * Public Types + ************************************************************************************/ + +struct lpc313x_header_s +{ + /* OFFS DESCRIPTION */ + uint32_t vector; /* 0x00 Valid ARM instruction. Usually this will be + * a branch instruction to entry point of the + * image. */ + uint32_t magic; /* 0x04 This field is used by boot ROM to detect a + * valid image header. This field should always + * be set to 0x41676d69. */ + uint32_t execution_crc32; /* 0x08 CRC32 value of execution part of the image. If + * the ‘image_type’ is set to ‘0xA’, this field + * is ignored by boot ROM. */ + uint32_t Reserved0[4]; /* 0x0c-0x18: Should be zero. */ + uint32_t imageType; /* 0x1c Specifies whether CRC check should be done + * on the image or not: + * 0xA – No CRC check required. + * 0xB – Do CRC32 check on both header and + * execution part of the image. */ + uint32_t imageLength; /* 0x20 Total image length including header rounded + * up to the nearest 512 byte boundary. In C + * language the field can be computed as: + * imageLength = (Actual length + 511) & ~0x1FF; */ + uint32_t releaseID; /* 0x24 Release or version number of the image. Note, + * this field is not used by boot ROM but is + * provided to track the image versions. */ + uint32_t buildTime; /* 0x28 Time (expressed in EPOC time format) at which + * image is built. Note, this field is not used + * by boot ROM but is provided to track the image + * versions. */ + uint32_t sbzBootParameter; /* 0x2c hould be zero. */ + uint32_t cust_reserved[15]; /* 0x30-0x68: Reserved for customer use (60 bytes) */ + uint32_t header_crc32; /* 0x6c CRC32 value of the header (bytes 0x00 to 0x6C + * of the image). If the ‘image_type’ is set + * to ‘0xA’, this field is ignored by boot ROM. */ + uint32_t Reserved1[4]; /* 0x70-0x7c: Should be zero. */ + /* 0x80 Start of program code (128Kb max). The final + * image has to be padded to the nearest 512 + * byte boundary */ +}; + +/************************************************************************************ + * Public data + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +extern uint32_t crc32part(const uint8_t *src, size_t len, uint32_t crc32val); +extern uint32_t crc32(const uint8_t *src, size_t len); + +#endif /* __CONFIGS_EA3131_TOOLS_BINFMT_H */ + diff --git a/include/crc32.h b/include/crc32.h new file mode 100755 index 0000000000..7c463fb8c4 --- /dev/null +++ b/include/crc32.h @@ -0,0 +1,82 @@ +/**************************************************************************** + * include/crc.h + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +#ifndef __INCLUDE_CRC32_H +#define __INCLUDE_CRC32_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/************************************************************************************ + * Name: crc32part + * + * Description: + * Continue CRC calculation on a part of the buffer. + * + ************************************************************************************/ + +EXTERN uint32_t crc32part(FAR const uint8_t *src, size_t len, uint32_t crc32val); + +/************************************************************************************ + * Name: crc32 + * + * Description: + * Return a 32-bit CRC of the contents of the 'src' buffer, length 'len' + * + ************************************************************************************/ + +EXTERN uint32_t crc32(FAR const uint8_t *src, size_t len); + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __INCLUDE_CRC32_H */ diff --git a/lib/Makefile b/lib/Makefile index 221d242666..f59aa33278 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -92,6 +92,8 @@ LIBGEN_SRCS = lib_basename.c lib_dirname.c REGEX_SRCS = lib_match.c +CRC_SRCS = lib_crc32.c + SQ_SRCS = sq_addlast.c sq_addfirst.c sq_addafter.c \ sq_rem.c sq_remlast.c sq_remfirst.c sq_remafter.c @@ -102,7 +104,7 @@ DBG_SRCS = lib_dbg.c lib_dumpbuffer.c CSRCS = $(MISC_SRCS) $(STRING_SRCS) $(CTYPE_SRCS) $(STDIO_SRCS) $(STDLIB_SRCS) \ $(MATH_SRCS) $(UNISTD_SRCS) $(TIME_SRCS) $(NET_SRCS) $(LIBGEN_SRCS) \ - $(REGEX_SRCS) $(SQ_SRCS) $(DQ_SRCS) $(DBG_SRCS) + $(REGEX_SRCS) $(CRC_SRCS) $(SQ_SRCS) $(DQ_SRCS) $(DBG_SRCS) COBJS = $(CSRCS:.c=$(OBJEXT)) SRCS = $(ASRCS) $(CSRCS) diff --git a/lib/lib_crc32.c b/lib/lib_crc32.c new file mode 100755 index 0000000000..e819145d57 --- /dev/null +++ b/lib/lib_crc32.c @@ -0,0 +1,123 @@ +/************************************************************************************************ + * lib/lib_crc32.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * + * The logic in this file was developed by Gary S. Brown: + * + * 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 + * + * - 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 operations for all combinations of data and CRC register values + * + * - The values must be right-shifted by eight bits by the updcrc logic; the shift must + * be u_(bring in zeroes). On some hardware you could probably optimize the shift in + * assembler by using byte-swap instructions polynomial $edb88320 + ************************************************************************************************/ + +/************************************************************************************************ + * Included Files + ************************************************************************************************/ + +#include +#include +#include + +/************************************************************************************************ + * Private Data + ************************************************************************************************/ + +static const uint32_t crc32_tab[] = +{ + 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 +}; + +/************************************************************************************************ + * Public Functions + ************************************************************************************************/ +/************************************************************************************************ + * Name: crc32part + * + * Description: + * Continue CRC calculation on a part of the buffer. + * + ************************************************************************************************/ + +uint32_t crc32part(FAR const uint8_t *src, size_t len, uint32_t crc32val) +{ + size_t i; + + for (i = 0; i < len; i++) + { + crc32val = crc32_tab[(crc32val ^ src[i]) & 0xff] ^ (crc32val >> 8); + } + return crc32val; +} + +/************************************************************************************************ + * Name: crc32 + * + * Description: + * Return a 32-bit CRC of the contents of the 'src' buffer, length 'len' + * + ************************************************************************************************/ + +uint32_t crc32(FAR const uint8_t *src, size_t len) +{ + return crc32part(src, len, 0); +}