| | 1 | /* |
| | 2 | * (C) Copyright 2001 |
| | 3 | * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it |
| | 4 | * |
| | 5 | * SPDX-License-Identifier: GPL-2.0+ |
| | 6 | */ |
| | 7 | |
| | 8 | #include <errno.h> |
| | 9 | #include <stdio.h> |
| | 10 | #include <stdint.h> |
| | 11 | #include <stdlib.h> |
| | 12 | #include <string.h> |
| | 13 | #include <unistd.h> |
| | 14 | |
| | 15 | #include <linux/kconfig.h> |
| | 16 | |
| | 17 | #ifndef __ASSEMBLY__ |
| | 18 | #define __ASSEMBLY__ /* Dirty trick to get only #defines */ |
| | 19 | #endif |
| | 20 | #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */ |
| | 21 | #include <config.h> |
| | 22 | #undef __ASSEMBLY__ |
| | 23 | |
| | 24 | #if defined(CONFIG_ENV_IS_IN_FLASH) |
| | 25 | # ifndef CONFIG_ENV_ADDR |
| | 26 | # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) |
| | 27 | # endif |
| | 28 | # ifndef CONFIG_ENV_OFFSET |
| | 29 | # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE) |
| | 30 | # endif |
| | 31 | # if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND) |
| | 32 | # define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND) |
| | 33 | # endif |
| | 34 | # ifndef CONFIG_ENV_SIZE |
| | 35 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE |
| | 36 | # endif |
| | 37 | # if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND) |
| | 38 | # define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE |
| | 39 | # endif |
| | 40 | # if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \ |
| | 41 | ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) |
| | 42 | # define ENV_IS_EMBEDDED |
| | 43 | # endif |
| | 44 | # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) |
| | 45 | # define CONFIG_SYS_REDUNDAND_ENVIRONMENT |
| | 46 | # endif |
| | 47 | #endif /* CONFIG_ENV_IS_IN_FLASH */ |
| | 48 | |
| | 49 | #if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC) |
| | 50 | # define CONFIG_BUILD_ENVCRC |
| | 51 | #endif |
| | 52 | |
| | 53 | #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT |
| | 54 | # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1) |
| | 55 | #else |
| | 56 | # define ENV_HEADER_SIZE (sizeof(uint32_t)) |
| | 57 | #endif |
| | 58 | |
| | 59 | #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE) |
| | 60 | |
| | 61 | |
| | 62 | #ifdef CONFIG_BUILD_ENVCRC |
| | 63 | # include <environment.h> |
| | 64 | extern unsigned int env_size; |
| | 65 | extern env_t environment; |
| | 66 | #endif /* CONFIG_BUILD_ENVCRC */ |
| | 67 | |
| | 68 | extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int); |
| | 69 | |
| | 70 | int main (int argc, char **argv) |
| | 71 | { |
| | 72 | #ifdef CONFIG_BUILD_ENVCRC |
| | 73 | unsigned char pad = 0x00; |
| | 74 | uint32_t crc; |
| | 75 | unsigned char *envptr = (unsigned char *)&environment, |
| | 76 | *dataptr = envptr + ENV_HEADER_SIZE; |
| | 77 | unsigned int datasize = ENV_SIZE; |
| | 78 | unsigned int eoe; |
| | 79 | |
| | 80 | if (argv[1] && !strncmp(argv[1], "--binary", 8)) { |
| | 81 | int ipad = 0xff; |
| | 82 | if (argv[1][8] == '=') |
| | 83 | sscanf(argv[1] + 9, "%i", &ipad); |
| | 84 | pad = ipad; |
| | 85 | } |
| | 86 | |
| | 87 | if (pad) { |
| | 88 | /* find the end of env */ |
| | 89 | for (eoe = 0; eoe < datasize - 1; ++eoe) |
| | 90 | if (!dataptr[eoe] && !dataptr[eoe+1]) { |
| | 91 | eoe += 2; |
| | 92 | break; |
| | 93 | } |
| | 94 | if (eoe < datasize - 1) |
| | 95 | memset(dataptr + eoe, pad, datasize - eoe); |
| | 96 | } |
| | 97 | |
| | 98 | crc = crc32 (0, dataptr, datasize); |
| | 99 | |
| | 100 | /* Check if verbose mode is activated passing a parameter to the program */ |
| | 101 | if (argc > 1) { |
| | 102 | if (!strncmp(argv[1], "--binary", 8)) { |
| | 103 | int le = (argc > 2 ? !strcmp(argv[2], "le") : 1); |
| | 104 | size_t i, start, end, step; |
| | 105 | if (le) { |
| | 106 | start = 0; |
| | 107 | end = ENV_HEADER_SIZE; |
| | 108 | step = 1; |
| | 109 | } else { |
| | 110 | start = ENV_HEADER_SIZE - 1; |
| | 111 | end = -1; |
| | 112 | step = -1; |
| | 113 | } |
| | 114 | for (i = start; i != end; i += step) |
| | 115 | printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8)); |
| | 116 | if (fwrite(dataptr, 1, datasize, stdout) != datasize) |
| | 117 | fprintf(stderr, "fwrite() failed: %s\n", strerror(errno)); |
| | 118 | } else { |
| | 119 | printf("CRC32 from offset %08X to %08X of environment = %08X\n", |
| | 120 | (unsigned int) (dataptr - envptr), |
| | 121 | (unsigned int) (dataptr - envptr) + datasize, |
| | 122 | crc); |
| | 123 | } |
| | 124 | } else { |
| | 125 | printf ("0x%08X\n", crc); |
| | 126 | } |
| | 127 | #else |
| | 128 | printf ("0\n"); |
| | 129 | #endif |
| | 130 | return EXIT_SUCCESS; |
| | 131 | } |
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