diff options
Diffstat (limited to 'lib/image-sparse.c')
| -rw-r--r-- | lib/image-sparse.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/lib/image-sparse.c b/lib/image-sparse.c new file mode 100644 index 0000000000..036062139b --- /dev/null +++ b/lib/image-sparse.c @@ -0,0 +1,261 @@ +/* + * 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 <image-sparse.h> +#include <div64.h> +#include <malloc.h> +#include <part.h> +#include <sparse_format.h> + +#include <linux/math64.h> + +static void default_log(const char *ignored, char *response) {} + +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; + uint32_t bytes_written = 0; + unsigned int chunk; + unsigned int offset; + unsigned int 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 = sparse_header->blk_sz * chunk_header->chunk_sz; + blkcnt = 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 = info->write(info, blk, blkcnt, data); + /* blks might be > blkcnt (eg. NAND bad-blocks) */ + if (blks < blkcnt) { + printf("%s: %s" LBAFU " [" LBAFU "]\n", + __func__, "Write failed, block #", + blk, blks); + info->mssg("flash write failure", response); + return -1; + } + blk += blks; + bytes_written += 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 += blkcnt * info->blksz; + total_blocks += 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 %u 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; +} |