/* * (C) Copyright 2001 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it * * See file CREDITS for list of people who contributed to this * project. * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <errno.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #ifndef __ASSEMBLY__ #define __ASSEMBLY__ /* Dirty trick to get only #defines */ #endif #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */ #include <config.h> #undef __ASSEMBLY__ #if defined(CONFIG_ENV_IS_IN_FLASH) # ifndef CONFIG_ENV_ADDR # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) # endif # ifndef CONFIG_ENV_OFFSET # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE) # endif # if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND) # define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND) # endif # ifndef CONFIG_ENV_SIZE # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE # endif # if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND) # define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE # endif # if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \ ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) # define ENV_IS_EMBEDDED 1 # endif # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) # define CONFIG_SYS_REDUNDAND_ENVIRONMENT 1 # endif #endif /* CONFIG_ENV_IS_IN_FLASH */ #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1) #else # define ENV_HEADER_SIZE (sizeof(uint32_t)) #endif #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE) extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int); #ifdef ENV_IS_EMBEDDED extern unsigned int env_size; extern unsigned char environment; #endif /* ENV_IS_EMBEDDED */ int main (int argc, char **argv) { #ifdef ENV_IS_EMBEDDED unsigned char pad = 0x00; uint32_t crc; unsigned char *envptr = &environment, *dataptr = envptr + ENV_HEADER_SIZE; unsigned int datasize = ENV_SIZE; unsigned int eoe; if (argv[1] && !strncmp(argv[1], "--binary", 8)) { int ipad = 0xff; if (argv[1][8] == '=') sscanf(argv[1] + 9, "%i", &ipad); pad = ipad; } if (pad) { /* find the end of env */ for (eoe = 0; eoe < datasize - 1; ++eoe) if (!dataptr[eoe] && !dataptr[eoe+1]) { eoe += 2; break; } if (eoe < datasize - 1) memset(dataptr + eoe, pad, datasize - eoe); } crc = crc32 (0, dataptr, datasize); /* Check if verbose mode is activated passing a parameter to the program */ if (argc > 1) { if (!strncmp(argv[1], "--binary", 8)) { int le = (argc > 2 ? !strcmp(argv[2], "le") : 1); size_t i, start, end, step; if (le) { start = 0; end = ENV_HEADER_SIZE; step = 1; } else { start = ENV_HEADER_SIZE - 1; end = -1; step = -1; } for (i = start; i != end; i += step) printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8)); if (fwrite(dataptr, 1, datasize, stdout) != datasize) fprintf(stderr, "fwrite() failed: %s\n", strerror(errno)); } else { printf("CRC32 from offset %08X to %08X of environment = %08X\n", (unsigned int) (dataptr - envptr), (unsigned int) (dataptr - envptr) + datasize, crc); } } else { printf ("0x%08X\n", crc); } #else printf ("0\n"); #endif return EXIT_SUCCESS; }