diff options
Diffstat (limited to 'u-boot/tools/envcrc.c')
| -rw-r--r-- | u-boot/tools/envcrc.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/u-boot/tools/envcrc.c b/u-boot/tools/envcrc.c new file mode 100644 index 0000000..c8c50d7 --- /dev/null +++ b/u-boot/tools/envcrc.c @@ -0,0 +1,140 @@ +/* + * (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; +} |