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https://xff.cz/git/u-boot/
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b2ea91ba57
Some of these have a space before the bracket. Drop it to fix the style. Add some missing function comments while here. Note that u32 and u8 cannot be used here since crc.h is included on the host side. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2001
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* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <linux/kconfig.h>
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#ifndef __ASSEMBLY__
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#define __ASSEMBLY__ /* Dirty trick to get only #defines */
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#endif
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#define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
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#include <config.h>
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#undef __ASSEMBLY__
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#if defined(CONFIG_ENV_IS_IN_FLASH)
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# ifndef CONFIG_ENV_ADDR
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# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
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# endif
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# ifndef CONFIG_ENV_OFFSET
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# define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
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# endif
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# if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
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# define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
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# endif
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# ifndef CONFIG_ENV_SIZE
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# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
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# endif
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# if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
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((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
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# define ENV_IS_EMBEDDED
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# endif
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#endif /* CONFIG_ENV_IS_IN_FLASH */
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#if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC)
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# define CONFIG_BUILD_ENVCRC
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#endif
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#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
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# define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
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#else
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# define ENV_HEADER_SIZE (sizeof(uint32_t))
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#endif
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#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
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#ifdef CONFIG_BUILD_ENVCRC
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# include <env_internal.h>
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extern unsigned int env_size;
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extern env_t embedded_environment;
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#endif /* CONFIG_BUILD_ENVCRC */
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extern uint32_t crc32(uint32_t, const unsigned char *, unsigned int);
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int main (int argc, char **argv)
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{
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#ifdef CONFIG_BUILD_ENVCRC
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unsigned char pad = 0x00;
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uint32_t crc;
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unsigned char *envptr = (unsigned char *)&embedded_environment,
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*dataptr = envptr + ENV_HEADER_SIZE;
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unsigned int datasize = ENV_SIZE;
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unsigned int eoe;
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if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
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int ipad = 0xff;
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if (argv[1][8] == '=')
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sscanf(argv[1] + 9, "%i", &ipad);
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pad = ipad;
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}
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if (pad) {
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/* find the end of env */
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for (eoe = 0; eoe < datasize - 1; ++eoe)
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if (!dataptr[eoe] && !dataptr[eoe+1]) {
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eoe += 2;
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break;
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}
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if (eoe < datasize - 1)
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memset(dataptr + eoe, pad, datasize - eoe);
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}
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crc = crc32(0, dataptr, datasize);
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/* Check if verbose mode is activated passing a parameter to the program */
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if (argc > 1) {
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if (!strncmp(argv[1], "--binary", 8)) {
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int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
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size_t i, start, end, step;
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if (le) {
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start = 0;
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end = ENV_HEADER_SIZE;
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step = 1;
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} else {
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start = ENV_HEADER_SIZE - 1;
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end = -1;
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step = -1;
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}
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for (i = start; i != end; i += step)
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printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
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if (fwrite(dataptr, 1, datasize, stdout) != datasize)
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fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
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} else {
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printf("CRC32 from offset %08X to %08X of environment = %08X\n",
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(unsigned int) (dataptr - envptr),
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(unsigned int) (dataptr - envptr) + datasize,
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crc);
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}
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} else {
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printf ("0x%08X\n", crc);
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}
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#else
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printf ("0\n");
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#endif
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return EXIT_SUCCESS;
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}
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