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/*
* Copyright (c) 2009, Google Inc.
* All rights reserved.
*
* Copyright (c) 2009-2014, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of The Linux Foundation nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* NOTE:
* Although it is very similar, this license text is not identical
* to the "BSD-3-Clause", therefore, DO NOT MODIFY THIS LICENSE TEXT!
*/
void cmd_flash_mmc_sparse_img(const char *arg, void *data, unsigned sz)
{
unsigned int chunk;
unsigned int chunk_data_sz;
uint32_t *fill_buf = NULL;
uint32_t fill_val;
uint32_t chunk_blk_cnt = 0;
sparse_header_t *sparse_header;
chunk_header_t *chunk_header;
uint32_t total_blocks = 0;
unsigned long long ptn = 0;
unsigned long long size = 0;
int index = INVALID_PTN;
int i;
uint8_t lun = 0;
index = partition_get_index(arg);
ptn = partition_get_offset(index);
if(ptn == 0) {
fastboot_fail("partition table doesn't exist");
return;
}
size = partition_get_size(index);
if (ROUND_TO_PAGE(sz,511) > size) {
fastboot_fail("size too large");
return;
}
lun = partition_get_lun(index);
mmc_set_lun(lun);
/* Read and skip over sparse image header */
sparse_header = (sparse_header_t *) data;
if ((sparse_header->total_blks * sparse_header->blk_sz) > size) {
fastboot_fail("size too large");
return;
}
data += sparse_header->file_hdr_sz;
if (sparse_header->file_hdr_sz > sizeof(sparse_header_t))
{
/*
* Skip the remaining bytes in a header that is longer than
* we expected.
*/
data += (sparse_header->file_hdr_sz - sizeof(sparse_header_t));
}
debug("=== Sparse Image Header ===\n");
debug("magic: 0x%x\n", sparse_header->magic);
debug("major_version: 0x%x\n", sparse_header->major_version);
debug("minor_version: 0x%x\n", sparse_header->minor_version);
debug("file_hdr_sz: %d\n", sparse_header->file_hdr_sz);
debug("chunk_hdr_sz: %d\n", sparse_header->chunk_hdr_sz);
debug("blk_sz: %d\n", sparse_header->blk_sz);
debug("total_blks: %d\n", sparse_header->total_blks);
debug("total_chunks: %d\n", sparse_header->total_chunks);
/* Start processing chunks */
for (chunk=0; chunk<sparse_header->total_chunks; chunk++)
{
/* Read and skip over chunk header */
chunk_header = (chunk_header_t *) data;
data += sizeof(chunk_header_t);
debug("=== Chunk Header ===\n");
debug("chunk_type: 0x%x\n", chunk_header->chunk_type);
debug("chunk_data_sz: 0x%x\n", chunk_header->chunk_sz);
debug("total_size: 0x%x\n", chunk_header->total_sz);
if (sparse_header->chunk_hdr_sz > sizeof(chunk_header_t))
{
/*
* Skip the remaining bytes in a header that is longer
* than we expected.
*/
data += (sparse_header->chunk_hdr_sz -
sizeof(chunk_header_t));
}
chunk_data_sz = sparse_header->blk_sz * chunk_header->chunk_sz;
switch (chunk_header->chunk_type)
{
case CHUNK_TYPE_RAW:
if (chunk_header->total_sz !=
(sparse_header->chunk_hdr_sz + chunk_data_sz))
{
fastboot_fail(
"Bogus chunk size for chunk type Raw");
return;
}
if (mmc_write(ptn +
((uint64_t)total_blocks *
sparse_header->blk_sz),
chunk_data_sz, (unsigned int *)data))
{
fastboot_fail("flash write failure");
return;
}
total_blocks += chunk_header->chunk_sz;
data += chunk_data_sz;
break;
case CHUNK_TYPE_FILL:
if (chunk_header->total_sz !=
(sparse_header->chunk_hdr_sz + sizeof(uint32_t)))
{
fastboot_fail(
"Bogus chunk size for chunk type FILL");
return;
}
fill_buf = (uint32_t *)
memalign(CACHE_LINE,
ROUNDUP(sparse_header->blk_sz,
CACHE_LINE));
if (!fill_buf)
{
fastboot_fail(
"Malloc failed for: CHUNK_TYPE_FILL");
return;
}
fill_val = *(uint32_t *)data;
data = (char *) data + sizeof(uint32_t);
chunk_blk_cnt = chunk_data_sz / sparse_header->blk_sz;
for (i = 0; i < (sparse_header->blk_sz / sizeof(fill_val)); i++)
{
fill_buf[i] = fill_val;
}
for (i = 0; i < chunk_blk_cnt; i++)
{
if (mmc_write(ptn +
((uint64_t)total_blocks *
sparse_header->blk_sz),
sparse_header->blk_sz, fill_buf))
{
fastboot_fail("flash write failure");
free(fill_buf);
return;
}
total_blocks++;
}
free(fill_buf);
break;
case CHUNK_TYPE_DONT_CARE:
total_blocks += chunk_header->chunk_sz;
break;
case CHUNK_TYPE_CRC:
if (chunk_header->total_sz !=
sparse_header->chunk_hdr_sz)
{
fastboot_fail(
"Bogus chunk size for chunk type Dont Care");
return;
}
total_blocks += chunk_header->chunk_sz;
data += chunk_data_sz;
break;
default:
debug("Unkown chunk type: %x\n",
chunk_header->chunk_type);
fastboot_fail("Unknown chunk type");
return;
}
}
debug("Wrote %d blocks, expected to write %d blocks\n",
total_blocks, sparse_header->total_blks);
if (total_blocks != sparse_header->total_blks)
fastboot_fail("sparse image write failure");
fastboot_okay("");
return;
}
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