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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2001 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it */ #include <errno.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <linux/kconfig.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 # endif # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) # define CONFIG_SYS_REDUNDAND_ENVIRONMENT # endif #endif /* CONFIG_ENV_IS_IN_FLASH */ #if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC) # define CONFIG_BUILD_ENVCRC #endif #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) #ifdef CONFIG_BUILD_ENVCRC # include <env_internal.h> extern unsigned int env_size; extern env_t embedded_environment; #endif /* CONFIG_BUILD_ENVCRC */ extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int); int main (int argc, char **argv) { #ifdef CONFIG_BUILD_ENVCRC unsigned char pad = 0x00; uint32_t crc; unsigned char *envptr = (unsigned char *)&embedded_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; } |