u-boot/lib/image-sparse.c
qianfan Zhao 62649165cb lib: sparse: Make CHUNK_TYPE_RAW buffer aligned
CHUNK_TYPE_RAW buffer is not aligned, and flash sparse images by
fastboot will report "Misaligned operation" if DCACHE is enabled.

Flashing Sparse Image
CACHE: Misaligned operation at range [84000028, 84001028]
CACHE: Misaligned operation at range [84001034, 84002034]
CACHE: Misaligned operation at range [8401104c, 8401304c]

Fix it

Signed-off-by: qianfan Zhao <qianfanguijin@163.com>
Reviewed-by: Sean Anderson <sean.anderson@seco.com>
2022-01-14 12:26:30 -05:00

319 lines
9.2 KiB
C

/*
* Copyright (c) 2009, Google Inc.
* All rights reserved.
*
* Copyright (c) 2009-2014, The Linux Foundation. All rights reserved.
* Portions Copyright 2014 Broadcom Corporation.
*
* 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!
*/
#include <config.h>
#include <common.h>
#include <blk.h>
#include <image-sparse.h>
#include <div64.h>
#include <log.h>
#include <malloc.h>
#include <part.h>
#include <sparse_format.h>
#include <asm/cache.h>
#include <linux/math64.h>
#include <linux/err.h>
static void default_log(const char *ignored, char *response) {}
static lbaint_t write_sparse_chunk_raw(struct sparse_storage *info,
lbaint_t blk, lbaint_t blkcnt,
void *data,
char *response)
{
lbaint_t n = blkcnt, write_blks, blks = 0, aligned_buf_blks = 100;
uint32_t *aligned_buf = NULL;
if (CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) {
write_blks = info->write(info, blk, n, data);
if (write_blks < n)
goto write_fail;
return write_blks;
}
aligned_buf = memalign(ARCH_DMA_MINALIGN, info->blksz * aligned_buf_blks);
if (!aligned_buf) {
info->mssg("Malloc failed for: CHUNK_TYPE_RAW", response);
return -ENOMEM;
}
while (blkcnt > 0) {
n = min(aligned_buf_blks, blkcnt);
memcpy(aligned_buf, data, n * info->blksz);
/* write_blks might be > n due to NAND bad-blocks */
write_blks = info->write(info, blk + blks, n, aligned_buf);
if (write_blks < n) {
free(aligned_buf);
goto write_fail;
}
blks += write_blks;
data += n * info->blksz;
blkcnt -= n;
}
free(aligned_buf);
return blks;
write_fail:
if (IS_ERR_VALUE(write_blks)) {
printf("%s: Write failed, block #" LBAFU " [" LBAFU "] (%lld)\n",
__func__, blk + blks, n, (long long)write_blks);
info->mssg("flash write failure", response);
return write_blks;
}
/* write_blks < n */
printf("%s: Write failed, block #" LBAFU " [" LBAFU "]\n",
__func__, blk + blks, n);
info->mssg("flash write failure(incomplete)", response);
return -1;
}
int write_sparse_image(struct sparse_storage *info,
const char *part_name, void *data, char *response)
{
lbaint_t blk;
lbaint_t blkcnt;
lbaint_t blks;
uint64_t bytes_written = 0;
unsigned int chunk;
unsigned int offset;
uint64_t chunk_data_sz;
uint32_t *fill_buf = NULL;
uint32_t fill_val;
sparse_header_t *sparse_header;
chunk_header_t *chunk_header;
uint32_t total_blocks = 0;
int fill_buf_num_blks;
int i;
int j;
fill_buf_num_blks = CONFIG_IMAGE_SPARSE_FILLBUF_SIZE / info->blksz;
/* Read and skip over sparse image header */
sparse_header = (sparse_header_t *)data;
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));
}
if (!info->mssg)
info->mssg = default_log;
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);
/*
* Verify that the sparse block size is a multiple of our
* storage backend block size
*/
div_u64_rem(sparse_header->blk_sz, info->blksz, &offset);
if (offset) {
printf("%s: Sparse image block size issue [%u]\n",
__func__, sparse_header->blk_sz);
info->mssg("sparse image block size issue", response);
return -1;
}
puts("Flashing Sparse Image\n");
/* Start processing chunks */
blk = info->start;
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);
if (chunk_header->chunk_type != CHUNK_TYPE_RAW) {
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 = ((u64)sparse_header->blk_sz) * chunk_header->chunk_sz;
blkcnt = DIV_ROUND_UP_ULL(chunk_data_sz, info->blksz);
switch (chunk_header->chunk_type) {
case CHUNK_TYPE_RAW:
if (chunk_header->total_sz !=
(sparse_header->chunk_hdr_sz + chunk_data_sz)) {
info->mssg("Bogus chunk size for chunk type Raw",
response);
return -1;
}
if (blk + blkcnt > info->start + info->size) {
printf(
"%s: Request would exceed partition size!\n",
__func__);
info->mssg("Request would exceed partition size!",
response);
return -1;
}
blks = write_sparse_chunk_raw(info, blk, blkcnt,
data, response);
if (blks < 0)
return -1;
blk += blks;
bytes_written += ((u64)blkcnt) * info->blksz;
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))) {
info->mssg("Bogus chunk size for chunk type FILL", response);
return -1;
}
fill_buf = (uint32_t *)
memalign(ARCH_DMA_MINALIGN,
ROUNDUP(
info->blksz * fill_buf_num_blks,
ARCH_DMA_MINALIGN));
if (!fill_buf) {
info->mssg("Malloc failed for: CHUNK_TYPE_FILL",
response);
return -1;
}
fill_val = *(uint32_t *)data;
data = (char *)data + sizeof(uint32_t);
for (i = 0;
i < (info->blksz * fill_buf_num_blks /
sizeof(fill_val));
i++)
fill_buf[i] = fill_val;
if (blk + blkcnt > info->start + info->size) {
printf(
"%s: Request would exceed partition size!\n",
__func__);
info->mssg("Request would exceed partition size!",
response);
return -1;
}
for (i = 0; i < blkcnt;) {
j = blkcnt - i;
if (j > fill_buf_num_blks)
j = fill_buf_num_blks;
blks = info->write(info, blk, j, fill_buf);
/* blks might be > j (eg. NAND bad-blocks) */
if (blks < j) {
printf("%s: %s " LBAFU " [%d]\n",
__func__,
"Write failed, block #",
blk, j);
info->mssg("flash write failure",
response);
free(fill_buf);
return -1;
}
blk += blks;
i += j;
}
bytes_written += ((u64)blkcnt) * info->blksz;
total_blocks += DIV_ROUND_UP_ULL(chunk_data_sz,
sparse_header->blk_sz);
free(fill_buf);
break;
case CHUNK_TYPE_DONT_CARE:
blk += info->reserve(info, blk, blkcnt);
total_blocks += chunk_header->chunk_sz;
break;
case CHUNK_TYPE_CRC32:
if (chunk_header->total_sz !=
sparse_header->chunk_hdr_sz) {
info->mssg("Bogus chunk size for chunk type Dont Care",
response);
return -1;
}
total_blocks += chunk_header->chunk_sz;
data += chunk_data_sz;
break;
default:
printf("%s: Unknown chunk type: %x\n", __func__,
chunk_header->chunk_type);
info->mssg("Unknown chunk type", response);
return -1;
}
}
debug("Wrote %d blocks, expected to write %d blocks\n",
total_blocks, sparse_header->total_blks);
printf("........ wrote %llu bytes to '%s'\n", bytes_written, part_name);
if (total_blocks != sparse_header->total_blks) {
info->mssg("sparse image write failure", response);
return -1;
}
return 0;
}