1 // SPDX-License-Identifier: GPL-2.0+
4 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
12 #include <u-boot/crc.h>
15 #include <linux/kconfig.h>
18 #define __ASSEMBLY__ /* Dirty trick to get only #defines */
20 #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
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)
28 # ifndef CONFIG_ENV_OFFSET
29 # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
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)
34 # ifndef CONFIG_ENV_SIZE
35 # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
37 # if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
38 ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
39 # define ENV_IS_EMBEDDED
41 #endif /* CONFIG_ENV_IS_IN_FLASH */
43 #if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC)
44 # define CONFIG_BUILD_ENVCRC
47 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
48 # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
50 # define ENV_HEADER_SIZE (sizeof(uint32_t))
53 #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
56 #ifdef CONFIG_BUILD_ENVCRC
57 # include <env_internal.h>
58 extern unsigned int env_size;
59 extern env_t embedded_environment;
60 #endif /* CONFIG_BUILD_ENVCRC */
62 extern uint32_t crc32(uint32_t, const unsigned char *, unsigned int);
64 int main (int argc, char **argv)
66 #ifdef CONFIG_BUILD_ENVCRC
67 unsigned char pad = 0x00;
69 unsigned char *envptr = (unsigned char *)&embedded_environment,
70 *dataptr = envptr + ENV_HEADER_SIZE;
71 unsigned int datasize = ENV_SIZE;
74 if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
76 if (argv[1][8] == '=')
77 sscanf(argv[1] + 9, "%i", &ipad);
82 /* find the end of env */
83 for (eoe = 0; eoe < datasize - 1; ++eoe)
84 if (!dataptr[eoe] && !dataptr[eoe+1]) {
88 if (eoe < datasize - 1)
89 memset(dataptr + eoe, pad, datasize - eoe);
92 crc = crc32(0, dataptr, datasize);
94 /* Check if verbose mode is activated passing a parameter to the program */
96 if (!strncmp(argv[1], "--binary", 8)) {
97 int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
98 size_t i, start, end, step;
101 end = ENV_HEADER_SIZE;
104 start = ENV_HEADER_SIZE - 1;
108 for (i = start; i != end; i += step)
109 printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
110 if (fwrite(dataptr, 1, datasize, stdout) != datasize)
111 fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
113 printf("CRC32 from offset %08X to %08X of environment = %08X\n",
114 (unsigned int) (dataptr - envptr),
115 (unsigned int) (dataptr - envptr) + datasize,
119 printf ("0x%08X\n", crc);