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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
wdenkfe57bb12002-09-18 13:23:15 +00002/*
3 * (C) Copyright 2001
4 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
wdenkfe57bb12002-09-18 13:23:15 +00005 */
6
Mike Frysingerf67066b2009-10-18 20:43:14 -04007#include <errno.h>
wdenkfe57bb12002-09-18 13:23:15 +00008#include <stdio.h>
Mike Frysinger89cdab72008-03-31 11:02:01 -04009#include <stdint.h>
wdenkfe57bb12002-09-18 13:23:15 +000010#include <stdlib.h>
Mike Frysinger837db3d2009-05-06 08:41:45 -040011#include <string.h>
wdenkfe57bb12002-09-18 13:23:15 +000012#include <unistd.h>
13
York Sunf33f3e02016-11-15 17:02:31 -080014#include <linux/kconfig.h>
15
Wolfgang Denkdc17fb62005-08-03 22:32:02 +020016#ifndef __ASSEMBLY__
17#define __ASSEMBLY__ /* Dirty trick to get only #defines */
18#endif
19#define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
wdenkfe57bb12002-09-18 13:23:15 +000020#include <config.h>
21#undef __ASSEMBLY__
22
Jean-Christophe PLAGNIOL-VILLARD5a1aceb2008-09-10 22:48:04 +020023#if defined(CONFIG_ENV_IS_IN_FLASH)
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020024# ifndef CONFIG_ENV_ADDR
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020025# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
wdenkfe57bb12002-09-18 13:23:15 +000026# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020027# ifndef CONFIG_ENV_OFFSET
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020028# define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
wdenkfe57bb12002-09-18 13:23:15 +000029# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020030# if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020031# define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
wdenk43d96162003-03-06 00:02:04 +000032# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020033# ifndef CONFIG_ENV_SIZE
34# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
wdenkfe57bb12002-09-18 13:23:15 +000035# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020036# if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
37# define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
wdenk43d96162003-03-06 00:02:04 +000038# endif
Wolfgang Denka747a7f2009-10-27 00:03:32 +010039# if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
40 ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
Igor Grinberg6f403ba2011-12-25 01:42:57 +000041# define ENV_IS_EMBEDDED
Wolfgang Denka747a7f2009-10-27 00:03:32 +010042# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020043# if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
Igor Grinberg6f403ba2011-12-25 01:42:57 +000044# define CONFIG_SYS_REDUNDAND_ENVIRONMENT
wdenkfe57bb12002-09-18 13:23:15 +000045# endif
Jean-Christophe PLAGNIOL-VILLARD5a1aceb2008-09-10 22:48:04 +020046#endif /* CONFIG_ENV_IS_IN_FLASH */
wdenkfe57bb12002-09-18 13:23:15 +000047
Mike Frysingerc3eb3fe2011-07-08 10:44:25 +000048#if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC)
Igor Grinberg6f403ba2011-12-25 01:42:57 +000049# define CONFIG_BUILD_ENVCRC
Mike Frysingerc3eb3fe2011-07-08 10:44:25 +000050#endif
51
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020052#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
Mike Frysinger89cdab72008-03-31 11:02:01 -040053# define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
wdenk43d96162003-03-06 00:02:04 +000054#else
Mike Frysinger89cdab72008-03-31 11:02:01 -040055# define ENV_HEADER_SIZE (sizeof(uint32_t))
wdenk43d96162003-03-06 00:02:04 +000056#endif
57
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020058#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
wdenk43d96162003-03-06 00:02:04 +000059
60
Mike Frysingerc3eb3fe2011-07-08 10:44:25 +000061#ifdef CONFIG_BUILD_ENVCRC
Igor Grinberg73f94ed2011-11-27 21:57:38 +000062# include <environment.h>
wdenkfe57bb12002-09-18 13:23:15 +000063extern unsigned int env_size;
Igor Grinberg994bc672011-11-17 06:07:23 +000064extern env_t environment;
Mike Frysingerc3eb3fe2011-07-08 10:44:25 +000065#endif /* CONFIG_BUILD_ENVCRC */
wdenkfe57bb12002-09-18 13:23:15 +000066
Igor Grinberg73f94ed2011-11-27 21:57:38 +000067extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
68
wdenkfe57bb12002-09-18 13:23:15 +000069int main (int argc, char **argv)
70{
Mike Frysingerc3eb3fe2011-07-08 10:44:25 +000071#ifdef CONFIG_BUILD_ENVCRC
Mike Frysinger837db3d2009-05-06 08:41:45 -040072 unsigned char pad = 0x00;
Mike Frysinger89cdab72008-03-31 11:02:01 -040073 uint32_t crc;
Igor Grinberg994bc672011-11-17 06:07:23 +000074 unsigned char *envptr = (unsigned char *)&environment,
Wolfgang Denkdc17fb62005-08-03 22:32:02 +020075 *dataptr = envptr + ENV_HEADER_SIZE;
76 unsigned int datasize = ENV_SIZE;
Mike Frysinger837db3d2009-05-06 08:41:45 -040077 unsigned int eoe;
78
79 if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
80 int ipad = 0xff;
81 if (argv[1][8] == '=')
82 sscanf(argv[1] + 9, "%i", &ipad);
83 pad = ipad;
84 }
85
86 if (pad) {
87 /* find the end of env */
88 for (eoe = 0; eoe < datasize - 1; ++eoe)
89 if (!dataptr[eoe] && !dataptr[eoe+1]) {
90 eoe += 2;
91 break;
92 }
93 if (eoe < datasize - 1)
94 memset(dataptr + eoe, pad, datasize - eoe);
95 }
wdenkfe57bb12002-09-18 13:23:15 +000096
Wolfgang Denkdc17fb62005-08-03 22:32:02 +020097 crc = crc32 (0, dataptr, datasize);
wdenkfe57bb12002-09-18 13:23:15 +000098
Wolfgang Denkdc17fb62005-08-03 22:32:02 +020099 /* Check if verbose mode is activated passing a parameter to the program */
100 if (argc > 1) {
Mike Frysinger837db3d2009-05-06 08:41:45 -0400101 if (!strncmp(argv[1], "--binary", 8)) {
102 int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
103 size_t i, start, end, step;
104 if (le) {
105 start = 0;
106 end = ENV_HEADER_SIZE;
107 step = 1;
108 } else {
109 start = ENV_HEADER_SIZE - 1;
110 end = -1;
111 step = -1;
112 }
113 for (i = start; i != end; i += step)
114 printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
Mike Frysingerf67066b2009-10-18 20:43:14 -0400115 if (fwrite(dataptr, 1, datasize, stdout) != datasize)
116 fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
Mike Frysinger837db3d2009-05-06 08:41:45 -0400117 } else {
118 printf("CRC32 from offset %08X to %08X of environment = %08X\n",
119 (unsigned int) (dataptr - envptr),
120 (unsigned int) (dataptr - envptr) + datasize,
121 crc);
122 }
Wolfgang Denkdc17fb62005-08-03 22:32:02 +0200123 } else {
124 printf ("0x%08X\n", crc);
125 }
Wolfgang Denka747a7f2009-10-27 00:03:32 +0100126#else
127 printf ("0\n");
128#endif
Wolfgang Denkdc17fb62005-08-03 22:32:02 +0200129 return EXIT_SUCCESS;
wdenkfe57bb12002-09-18 13:23:15 +0000130}