/* * 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 #include #include #include #include #include void write_sparse_image(block_dev_desc_t *dev_desc, disk_partition_t *info, const char *part_name, void *data, unsigned sz) { lbaint_t blk; lbaint_t blkcnt; lbaint_t blks; uint32_t bytes_written = 0; unsigned int chunk; 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 i; /* 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)); } 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 sparse_header->blk_sz is an exact multiple of info->blksz */ if (sparse_header->blk_sz != (sparse_header->blk_sz & ~(info->blksz - 1))) { printf("%s: Sparse image block size issue [%u]\n", __func__, sparse_header->blk_sz); fastboot_fail("sparse image block size issue"); return; } puts("Flashing Sparse Image\n"); /* Start processing chunks */ blk = info->start; for (chunk=0; chunktotal_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)) { fastboot_fail( "Bogus chunk size for chunk type Raw"); return; } if (blk + blkcnt > info->start + info->size) { printf( "%s: Request would exceed partition size!\n", __func__); fastboot_fail( "Request would exceed partition size!"); return; } blks = dev_desc->block_write(dev_desc->dev, blk, blkcnt, data); if (blks != blkcnt) { printf("%s: Write failed " LBAFU "\n", __func__, blks); fastboot_fail("flash write failure"); return; } blk += blkcnt; 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))) { fastboot_fail( "Bogus chunk size for chunk type FILL"); return; } fill_buf = (uint32_t *) memalign(ARCH_DMA_MINALIGN, ROUNDUP(info->blksz, ARCH_DMA_MINALIGN)); if (!fill_buf) { fastboot_fail( "Malloc failed for: CHUNK_TYPE_FILL"); return; } fill_val = *(uint32_t *)data; data = (char *) data + sizeof(uint32_t); for (i = 0; i < (info->blksz / 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__); fastboot_fail( "Request would exceed partition size!"); return; } for (i = 0; i < blkcnt; i++) { blks = dev_desc->block_write(dev_desc->dev, blk, 1, fill_buf); if (blks != 1) { printf( "%s: Write failed, block # " LBAFU "\n", __func__, blkcnt); fastboot_fail("flash write failure"); free(fill_buf); return; } blk++; } bytes_written += blkcnt * info->blksz; total_blocks += chunk_data_sz / sparse_header->blk_sz; free(fill_buf); break; case CHUNK_TYPE_DONT_CARE: blk += blkcnt; total_blocks += chunk_header->chunk_sz; break; case CHUNK_TYPE_CRC32: 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: printf("%s: Unknown chunk type: %x\n", __func__, 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); printf("........ wrote %u bytes to '%s'\n", bytes_written, part_name); if (total_blocks != sparse_header->total_blks) fastboot_fail("sparse image write failure"); fastboot_okay(""); return; }