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/*
* (C) Copyright 2011
* Texas Instruments, <www.ti.com>
* Author: Vikram Pandita <vikram.pandita@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include <common.h>
#include <sparse.h>
#include <mmc.h>
//#define DEBUG
#define SPARSE_HEADER_MAJOR_VER 1
u8
do_unsparse(unsigned char *source, u32 sector, char *slot_no)
{
sparse_header_t *header = (void*) source;
unsigned mmcc;
u32 i, outlen = 0;
mmcc = simple_strtoul(slot_no, NULL, 16);
printf("sparse: write to mmc slot[%d] @ %d\n", mmcc, sector);
if (header->magic != SPARSE_HEADER_MAGIC) {
printf("sparse: bad magic\n");
return 1;
}
if ((header->major_version != SPARSE_HEADER_MAJOR_VER) ||
(header->file_hdr_sz != sizeof(sparse_header_t)) ||
(header->chunk_hdr_sz != sizeof(chunk_header_t))) {
printf("sparse: incompatible format\n");
return 1;
}
/* todo: ensure image will fit */
/* Skip the header now */
source += header->file_hdr_sz;
for (i=0; i < header->total_chunks; i++) {
unsigned int len = 0;
int r;
chunk_header_t *chunk = (void*) source;
/* move to next chunk */
source += sizeof(chunk_header_t);
switch (chunk->chunk_type) {
case CHUNK_TYPE_RAW:
len = chunk->chunk_sz * header->blk_sz;
if (chunk->total_sz != (len + sizeof(chunk_header_t))) {
printf("sparse: bad chunk size for chunk %d, type Raw\n", i);
return 1;
}
outlen += len;
#ifdef DEBUG
printf("sparse: RAW blk=%d bsz=%d: write(sector=%d,len=%d)\n",
chunk->chunk_sz, header->blk_sz, sector, len);
#endif
r = mmc_write(mmcc, source, sector, len);
if (r < 0) {
printf("sparse: mmc write failed\n");
return 1;
}
sector += (len / 512);
source += len;
break;
case CHUNK_TYPE_DONT_CARE:
if (chunk->total_sz != sizeof(chunk_header_t)) {
printf("sparse: bogus DONT CARE chunk\n");
return 1;
}
len = chunk->chunk_sz * header->blk_sz;
#ifdef DEBUG
printf("sparse: DONT_CARE blk=%d bsz=%d: skip(sector=%d,len=%d)\n",
chunk->chunk_sz, header->blk_sz, sector, len);
#endif
outlen += len;
sector += (len / 512);
break;
default:
printf("sparse: unknown chunk ID %04x\n", chunk->chunk_type);
return 1;
}
}
printf("\nsparse: out-length-0x%d MB\n", outlen/(1024*1024));
return 0;
}
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