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 <stdint.h> 26 #include <stdlib.h> 27 #include <unistd.h> 28 29 #ifndef __ASSEMBLY__ 30 #define __ASSEMBLY__ /* Dirty trick to get only #defines */ 31 #endif 32 #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */ 33 #include <config.h> 34 #undef __ASSEMBLY__ 35 36 #if defined(CONFIG_ENV_IS_IN_FLASH) 37 # ifndef CONFIG_ENV_ADDR 38 # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) 39 # endif 40 # ifndef CONFIG_ENV_OFFSET 41 # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE) 42 # endif 43 # if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND) 44 # define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND) 45 # endif 46 # ifndef CONFIG_ENV_SIZE 47 # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE 48 # endif 49 # if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND) 50 # define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE 51 # endif 52 # if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \ 53 ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) 54 # define ENV_IS_EMBEDDED 1 55 # endif 56 # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) 57 # define CONFIG_SYS_REDUNDAND_ENVIRONMENT 1 58 # endif 59 #endif /* CONFIG_ENV_IS_IN_FLASH */ 60 61 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT 62 # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1) 63 #else 64 # define ENV_HEADER_SIZE (sizeof(uint32_t)) 65 #endif 66 67 #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE) 68 69 70 extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int); 71 72 #ifdef ENV_IS_EMBEDDED 73 extern unsigned int env_size; 74 extern unsigned char environment; 75 #endif /* ENV_IS_EMBEDDED */ 76 77 int main (int argc, char **argv) 78 { 79 #ifdef ENV_IS_EMBEDDED 80 uint32_t crc; 81 unsigned char *envptr = &environment, 82 *dataptr = envptr + ENV_HEADER_SIZE; 83 unsigned int datasize = ENV_SIZE; 84 85 crc = crc32 (0, dataptr, datasize); 86 87 /* Check if verbose mode is activated passing a parameter to the program */ 88 if (argc > 1) { 89 printf ("CRC32 from offset %08X to %08X of environment = %08X\n", 90 (unsigned int) (dataptr - envptr), 91 (unsigned int) (dataptr - envptr) + datasize, 92 crc); 93 } else { 94 printf ("0x%08X\n", crc); 95 } 96 #else 97 printf ("0\n"); 98 #endif 99 return EXIT_SUCCESS; 100 } 101