1 /* 2 * (C) Copyright 2001 3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <stdio.h> 25 #include <stdlib.h> 26 #include <unistd.h> 27 28 #ifndef __ASSEMBLY__ 29 #define __ASSEMBLY__ /* Dirty trick to get only #defines */ 30 #endif 31 #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */ 32 #include <config.h> 33 #undef __ASSEMBLY__ 34 35 #if defined(CFG_ENV_IS_IN_FLASH) 36 # ifndef CFG_ENV_ADDR 37 # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET) 38 # endif 39 # ifndef CFG_ENV_OFFSET 40 # define CFG_ENV_OFFSET (CFG_ENV_ADDR - CFG_FLASH_BASE) 41 # endif 42 # if !defined(CFG_ENV_ADDR_REDUND) && defined(CFG_ENV_OFFSET_REDUND) 43 # define CFG_ENV_ADDR_REDUND (CFG_FLASH_BASE + CFG_ENV_OFFSET_REDUND) 44 # endif 45 # ifndef CFG_ENV_SIZE 46 # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE 47 # endif 48 # if defined(CFG_ENV_ADDR_REDUND) && !defined(CFG_ENV_SIZE_REDUND) 49 # define CFG_ENV_SIZE_REDUND CFG_ENV_SIZE 50 # endif 51 # if (CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \ 52 ((CFG_ENV_ADDR + CFG_ENV_SIZE) <= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) 53 # define ENV_IS_EMBEDDED 1 54 # endif 55 # if defined(CFG_ENV_ADDR_REDUND) || defined(CFG_ENV_OFFSET_REDUND) 56 # define CFG_REDUNDAND_ENVIRONMENT 1 57 # endif 58 #endif /* CFG_ENV_IS_IN_FLASH */ 59 60 #ifdef CFG_REDUNDAND_ENVIRONMENT 61 # define ENV_HEADER_SIZE (sizeof(unsigned long) + 1) 62 #else 63 # define ENV_HEADER_SIZE (sizeof(unsigned long)) 64 #endif 65 66 #define ENV_SIZE (CFG_ENV_SIZE - ENV_HEADER_SIZE) 67 68 69 extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned int); 70 71 #ifdef ENV_IS_EMBEDDED 72 extern unsigned int env_size; 73 extern unsigned char environment; 74 #endif /* ENV_IS_EMBEDDED */ 75 76 int main (int argc, char **argv) 77 { 78 #ifdef ENV_IS_EMBEDDED 79 int crc; 80 unsigned char *envptr = &environment, 81 *dataptr = envptr + ENV_HEADER_SIZE; 82 unsigned int datasize = ENV_SIZE; 83 84 crc = crc32 (0, dataptr, datasize); 85 86 /* Check if verbose mode is activated passing a parameter to the program */ 87 if (argc > 1) { 88 printf ("CRC32 from offset %08X to %08X of environment = %08X\n", 89 (unsigned int) (dataptr - envptr), 90 (unsigned int) (dataptr - envptr) + datasize, 91 crc); 92 } else { 93 printf ("0x%08X\n", crc); 94 } 95 #else 96 printf ("0\n"); 97 #endif 98 return EXIT_SUCCESS; 99 } 100