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https://github.com/AsahiLinux/u-boot
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b97a2a0a21
- Add inline helper macros for basic header processing - Move common non inline code common/image.c - Replace direct header access with the API routines - Rename IH_CPU_* to IH_ARCH_* Signed-off-by: Marian Balakowicz <m8@semihalf.com>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* (C) Copyright 2008 Semihalf
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*
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* (C) Copyright 2000-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef USE_HOSTCC
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# include <common.h>
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# include <watchdog.h>
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#else
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# include "mkimage.h"
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#endif
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#include <image.h>
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unsigned long crc32 (unsigned long, const unsigned char *, unsigned int);
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int image_check_hcrc (image_header_t *hdr)
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{
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ulong hcrc;
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ulong len = image_get_header_size ();
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image_header_t header;
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/* Copy header so we can blank CRC field for re-calculation */
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memmove (&header, (char *)hdr, image_get_header_size ());
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image_set_hcrc (&header, 0);
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hcrc = crc32 (0, (unsigned char *)&header, len);
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return (hcrc == image_get_hcrc (hdr));
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}
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int image_check_dcrc (image_header_t *hdr)
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{
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ulong data = image_get_data (hdr);
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ulong len = image_get_data_size (hdr);
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ulong dcrc = crc32 (0, (unsigned char *)data, len);
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return (dcrc == image_get_dcrc (hdr));
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}
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int image_check_dcrc_wd (image_header_t *hdr, ulong chunksz)
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{
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ulong dcrc = 0;
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ulong len = image_get_data_size (hdr);
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ulong data = image_get_data (hdr);
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#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
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ulong cdata = data;
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ulong edata = cdata + len;
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while (cdata < edata) {
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ulong chunk = edata - cdata;
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if (chunk > chunksz)
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chunk = chunksz;
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dcrc = crc32 (dcrc, (unsigned char *)cdata, chunk);
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cdata += chunk;
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WATCHDOG_RESET ();
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}
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#else
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dcrc = crc32 (0, (unsigned char *)data, len);
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#endif
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return (dcrc == image_get_dcrc (hdr));
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}
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int getenv_verify (void)
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{
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char *s = getenv ("verify");
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return (s && (*s == 'n')) ? 0 : 1;
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}
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