| /* |
| * This file is part of the libpayload project. |
| * |
| * Copyright (C) 2011 secunet Security Networks AG |
| * Copyright (C) 2013 Google, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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. |
| */ |
| #define LIBPAYLOAD |
| |
| #ifdef LIBPAYLOAD |
| # include <libpayload-config.h> |
| # if CONFIG(LP_LZMA) |
| # include <lzma.h> |
| # define CBFS_CORE_WITH_LZMA |
| # endif |
| # if CONFIG(LP_LZ4) |
| # include <lz4.h> |
| # define CBFS_CORE_WITH_LZ4 |
| # endif |
| # define CBFS_MINI_BUILD |
| #elif defined(__SMM__) |
| # define CBFS_MINI_BUILD |
| #else |
| # define CBFS_CORE_WITH_LZMA |
| # define CBFS_CORE_WITH_LZ4 |
| # include <lib.h> |
| #endif |
| |
| #include <cbfs.h> |
| #include <string.h> |
| |
| #ifdef LIBPAYLOAD |
| # include <stdio.h> |
| # define DEBUG(x...) |
| # define LOG(x...) |
| # define ERROR(x...) printf(x) |
| #else |
| # include <console/console.h> |
| # define ERROR(x...) printk(BIOS_ERR, "CBFS: " x) |
| # define LOG(x...) printk(BIOS_INFO, "CBFS: " x) |
| # if CONFIG_LP_DEBUG_CBFS |
| # define DEBUG(x...) printk(BIOS_SPEW, "CBFS: " x) |
| # else |
| # define DEBUG(x...) |
| # endif |
| #endif |
| |
| #include "cbfs_core.c" |
| |
| #ifndef __SMM__ |
| static inline int tohex4(unsigned int c) |
| { |
| return (c <= 9) ? (c + '0') : (c - 10 + 'a'); |
| } |
| |
| static void tohex16(unsigned int val, char* dest) |
| { |
| dest[0] = tohex4(val>>12); |
| dest[1] = tohex4((val>>8) & 0xf); |
| dest[2] = tohex4((val>>4) & 0xf); |
| dest[3] = tohex4(val & 0xf); |
| } |
| |
| void *cbfs_load_optionrom(struct cbfs_media *media, uint16_t vendor, |
| uint16_t device) |
| { |
| char name[17] = "pciXXXX,XXXX.rom"; |
| |
| tohex16(vendor, name+3); |
| tohex16(device, name+8); |
| |
| return cbfs_get_file_content(media, name, CBFS_TYPE_OPTIONROM, NULL); |
| } |
| |
| void * cbfs_load_stage(struct cbfs_media *media, const char *name) |
| { |
| struct cbfs_stage *stage = (struct cbfs_stage *) |
| cbfs_get_file_content(media, name, CBFS_TYPE_STAGE, NULL); |
| /* this is a mess. There is no ntohll. */ |
| /* for now, assume compatible byte order until we solve this. */ |
| uintptr_t entry; |
| uint32_t final_size; |
| |
| if (stage == NULL) |
| return (void *) -1; |
| |
| LOG("loading stage %s @ %p (%d bytes), entry @ 0x%llx\n", |
| name, |
| (void*)(uintptr_t) stage->load, stage->memlen, |
| stage->entry); |
| |
| final_size = cbfs_decompress(stage->compression, |
| ((unsigned char *) stage) + |
| sizeof(struct cbfs_stage), |
| stage->len, |
| (void *) (uintptr_t) stage->load, |
| stage->memlen); |
| if (!final_size) { |
| entry = -1; |
| goto out; |
| } |
| |
| memset((void *)((uintptr_t)stage->load + final_size), 0, |
| stage->memlen - final_size); |
| |
| DEBUG("stage loaded.\n"); |
| |
| entry = stage->entry; |
| // entry = ntohll(stage->entry); |
| |
| out: |
| free(stage); |
| return (void *) entry; |
| } |
| |
| int cbfs_execute_stage(struct cbfs_media *media, const char *name) |
| { |
| struct cbfs_stage *stage = (struct cbfs_stage *) |
| cbfs_get_file_content(media, name, CBFS_TYPE_STAGE, NULL); |
| |
| if (stage == NULL) |
| return 1; |
| |
| if (ntohl(stage->compression) != CBFS_COMPRESS_NONE) { |
| LOG("Unable to run %s: Compressed file" |
| "Not supported for in-place execution\n", name); |
| free(stage); |
| return 1; |
| } |
| |
| LOG("run @ %p\n", (void *) (uintptr_t)ntohll(stage->entry)); |
| int result = run_address((void *)(uintptr_t)ntohll(stage->entry)); |
| free(stage); |
| return result; |
| } |
| |
| void *cbfs_load_payload(struct cbfs_media *media, const char *name) |
| { |
| return (struct cbfs_payload *)cbfs_get_file_content( |
| media, name, CBFS_TYPE_SELF, NULL); |
| } |
| |
| struct cbfs_file *cbfs_find(const char *name) { |
| struct cbfs_handle *handle = cbfs_get_handle(CBFS_DEFAULT_MEDIA, name); |
| struct cbfs_media *m = &handle->media; |
| void *ret; |
| |
| if (!handle) |
| return NULL; |
| |
| ret = m->map(m, handle->media_offset, |
| handle->content_offset + handle->content_size); |
| if (ret == CBFS_MEDIA_INVALID_MAP_ADDRESS) { |
| free(handle); |
| return NULL; |
| } |
| |
| free(handle); |
| return ret; |
| } |
| |
| void *cbfs_find_file(const char *name, int type) { |
| return cbfs_get_file_content(CBFS_DEFAULT_MEDIA, name, type, NULL); |
| } |
| |
| const struct cbfs_header *get_cbfs_header(void) { |
| return cbfs_get_header(CBFS_DEFAULT_MEDIA); |
| } |
| |
| /* Simple buffer */ |
| |
| void *cbfs_simple_buffer_map(struct cbfs_simple_buffer *buffer, |
| struct cbfs_media *media, |
| size_t offset, size_t count) { |
| void *address = buffer->buffer + buffer->allocated; |
| DEBUG("simple_buffer_map(offset=%zu, count=%zu): " |
| "allocated=%zu, size=%zu, last_allocate=%zu\n", |
| offset, count, buffer->allocated, buffer->size, |
| buffer->last_allocate); |
| if (buffer->allocated + count >= buffer->size) |
| return CBFS_MEDIA_INVALID_MAP_ADDRESS; |
| if (media->read(media, address, offset, count) != count) { |
| ERROR("simple_buffer: fail to read %zd bytes from 0x%zx\n", |
| count, offset); |
| return CBFS_MEDIA_INVALID_MAP_ADDRESS; |
| } |
| buffer->allocated += count; |
| buffer->last_allocate = count; |
| return address; |
| } |
| |
| void *cbfs_simple_buffer_unmap(struct cbfs_simple_buffer *buffer, |
| const void *address) { |
| // TODO Add simple buffer management so we can free more than last |
| // allocated one. |
| DEBUG("simple_buffer_unmap(address=%p): " |
| "allocated=%zu, size=%zu, last_allocate=%zu\n", |
| address, buffer->allocated, buffer->size, |
| buffer->last_allocate); |
| if ((buffer->buffer + buffer->allocated - buffer->last_allocate) == |
| address) { |
| buffer->allocated -= buffer->last_allocate; |
| buffer->last_allocate = 0; |
| } |
| return NULL; |
| } |
| |
| /** |
| * run_address is passed the address of a function taking no parameters and |
| * jumps to it, returning the result. |
| * @param f the address to call as a function. |
| * @return value returned by the function. |
| */ |
| |
| int run_address(void *f) |
| { |
| int (*v) (void); |
| v = f; |
| return v(); |
| } |
| |
| #endif |