mirror of https://gitee.com/openkylin/qemu.git
1251 lines
33 KiB
C
1251 lines
33 KiB
C
/*
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* QEMU Executable loader
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* Gunzip functionality in this file is derived from u-boot:
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*
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* (C) Copyright 2008 Semihalf
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*
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* (C) Copyright 2000-2005
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/hw.h"
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#include "disas/disas.h"
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#include "monitor/monitor.h"
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#include "sysemu/sysemu.h"
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#include "uboot_image.h"
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#include "hw/loader.h"
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#include "hw/nvram/fw_cfg.h"
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#include "exec/memory.h"
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#include "exec/address-spaces.h"
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#include "hw/boards.h"
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#include "qemu/cutils.h"
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#include <zlib.h>
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static int roms_loaded;
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/* return the size or -1 if error */
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int get_image_size(const char *filename)
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{
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int fd, size;
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fd = open(filename, O_RDONLY | O_BINARY);
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if (fd < 0)
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return -1;
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size = lseek(fd, 0, SEEK_END);
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close(fd);
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return size;
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}
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/* return the size or -1 if error */
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/* deprecated, because caller does not specify buffer size! */
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int load_image(const char *filename, uint8_t *addr)
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{
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int fd, size;
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fd = open(filename, O_RDONLY | O_BINARY);
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if (fd < 0)
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return -1;
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size = lseek(fd, 0, SEEK_END);
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if (size == -1) {
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fprintf(stderr, "file %-20s: get size error: %s\n",
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filename, strerror(errno));
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close(fd);
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return -1;
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}
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lseek(fd, 0, SEEK_SET);
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if (read(fd, addr, size) != size) {
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close(fd);
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return -1;
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}
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close(fd);
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return size;
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}
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/* return the size or -1 if error */
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ssize_t load_image_size(const char *filename, void *addr, size_t size)
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{
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int fd;
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ssize_t actsize;
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fd = open(filename, O_RDONLY | O_BINARY);
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if (fd < 0) {
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return -1;
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}
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actsize = read(fd, addr, size);
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if (actsize < 0) {
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close(fd);
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return -1;
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}
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close(fd);
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return actsize;
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}
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/* read()-like version */
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ssize_t read_targphys(const char *name,
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int fd, hwaddr dst_addr, size_t nbytes)
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{
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uint8_t *buf;
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ssize_t did;
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buf = g_malloc(nbytes);
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did = read(fd, buf, nbytes);
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if (did > 0)
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rom_add_blob_fixed("read", buf, did, dst_addr);
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g_free(buf);
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return did;
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}
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int load_image_targphys(const char *filename,
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hwaddr addr, uint64_t max_sz)
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{
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return load_image_targphys_as(filename, addr, max_sz, NULL);
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}
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/* return the size or -1 if error */
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int load_image_targphys_as(const char *filename,
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hwaddr addr, uint64_t max_sz, AddressSpace *as)
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{
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int size;
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size = get_image_size(filename);
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if (size > max_sz) {
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return -1;
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}
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if (size > 0) {
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rom_add_file_fixed_as(filename, addr, -1, as);
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}
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return size;
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}
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int load_image_mr(const char *filename, MemoryRegion *mr)
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{
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int size;
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if (!memory_access_is_direct(mr, false)) {
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/* Can only load an image into RAM or ROM */
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return -1;
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}
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size = get_image_size(filename);
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if (size > memory_region_size(mr)) {
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return -1;
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}
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if (size > 0) {
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if (rom_add_file_mr(filename, mr, -1) < 0) {
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return -1;
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}
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}
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return size;
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}
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void pstrcpy_targphys(const char *name, hwaddr dest, int buf_size,
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const char *source)
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{
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const char *nulp;
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char *ptr;
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if (buf_size <= 0) return;
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nulp = memchr(source, 0, buf_size);
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if (nulp) {
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rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
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} else {
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rom_add_blob_fixed(name, source, buf_size, dest);
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ptr = rom_ptr(dest + buf_size - 1);
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*ptr = 0;
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}
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}
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/* A.OUT loader */
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struct exec
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{
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uint32_t a_info; /* Use macros N_MAGIC, etc for access */
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uint32_t a_text; /* length of text, in bytes */
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uint32_t a_data; /* length of data, in bytes */
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uint32_t a_bss; /* length of uninitialized data area, in bytes */
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uint32_t a_syms; /* length of symbol table data in file, in bytes */
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uint32_t a_entry; /* start address */
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uint32_t a_trsize; /* length of relocation info for text, in bytes */
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uint32_t a_drsize; /* length of relocation info for data, in bytes */
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};
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static void bswap_ahdr(struct exec *e)
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{
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bswap32s(&e->a_info);
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bswap32s(&e->a_text);
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bswap32s(&e->a_data);
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bswap32s(&e->a_bss);
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bswap32s(&e->a_syms);
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bswap32s(&e->a_entry);
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bswap32s(&e->a_trsize);
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bswap32s(&e->a_drsize);
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}
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#define N_MAGIC(exec) ((exec).a_info & 0xffff)
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#define OMAGIC 0407
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#define NMAGIC 0410
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#define ZMAGIC 0413
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#define QMAGIC 0314
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#define _N_HDROFF(x) (1024 - sizeof (struct exec))
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#define N_TXTOFF(x) \
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(N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
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(N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
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#define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
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#define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
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#define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
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#define N_DATADDR(x, target_page_size) \
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(N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
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: (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
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int load_aout(const char *filename, hwaddr addr, int max_sz,
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int bswap_needed, hwaddr target_page_size)
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{
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int fd;
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ssize_t size, ret;
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struct exec e;
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uint32_t magic;
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fd = open(filename, O_RDONLY | O_BINARY);
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if (fd < 0)
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return -1;
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size = read(fd, &e, sizeof(e));
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if (size < 0)
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goto fail;
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if (bswap_needed) {
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bswap_ahdr(&e);
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}
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magic = N_MAGIC(e);
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switch (magic) {
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case ZMAGIC:
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case QMAGIC:
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case OMAGIC:
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if (e.a_text + e.a_data > max_sz)
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goto fail;
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lseek(fd, N_TXTOFF(e), SEEK_SET);
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size = read_targphys(filename, fd, addr, e.a_text + e.a_data);
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if (size < 0)
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goto fail;
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break;
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case NMAGIC:
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if (N_DATADDR(e, target_page_size) + e.a_data > max_sz)
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goto fail;
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lseek(fd, N_TXTOFF(e), SEEK_SET);
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size = read_targphys(filename, fd, addr, e.a_text);
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if (size < 0)
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goto fail;
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ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size),
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e.a_data);
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if (ret < 0)
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goto fail;
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size += ret;
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break;
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default:
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goto fail;
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}
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close(fd);
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return size;
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fail:
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close(fd);
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return -1;
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}
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/* ELF loader */
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static void *load_at(int fd, off_t offset, size_t size)
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{
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void *ptr;
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if (lseek(fd, offset, SEEK_SET) < 0)
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return NULL;
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ptr = g_malloc(size);
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if (read(fd, ptr, size) != size) {
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g_free(ptr);
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return NULL;
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}
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return ptr;
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}
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#ifdef ELF_CLASS
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#undef ELF_CLASS
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#endif
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#define ELF_CLASS ELFCLASS32
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#include "elf.h"
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#define SZ 32
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#define elf_word uint32_t
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#define elf_sword int32_t
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#define bswapSZs bswap32s
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#include "hw/elf_ops.h"
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#undef elfhdr
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#undef elf_phdr
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#undef elf_shdr
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#undef elf_sym
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#undef elf_rela
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#undef elf_note
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#undef elf_word
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#undef elf_sword
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#undef bswapSZs
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#undef SZ
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#define elfhdr elf64_hdr
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#define elf_phdr elf64_phdr
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#define elf_note elf64_note
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#define elf_shdr elf64_shdr
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#define elf_sym elf64_sym
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#define elf_rela elf64_rela
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#define elf_word uint64_t
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#define elf_sword int64_t
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#define bswapSZs bswap64s
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#define SZ 64
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#include "hw/elf_ops.h"
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const char *load_elf_strerror(int error)
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{
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switch (error) {
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case 0:
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return "No error";
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case ELF_LOAD_FAILED:
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return "Failed to load ELF";
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case ELF_LOAD_NOT_ELF:
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return "The image is not ELF";
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case ELF_LOAD_WRONG_ARCH:
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return "The image is from incompatible architecture";
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case ELF_LOAD_WRONG_ENDIAN:
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return "The image has incorrect endianness";
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default:
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return "Unknown error";
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}
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}
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|
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void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp)
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{
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int fd;
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uint8_t e_ident_local[EI_NIDENT];
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uint8_t *e_ident;
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size_t hdr_size, off;
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bool is64l;
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if (!hdr) {
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hdr = e_ident_local;
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}
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e_ident = hdr;
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fd = open(filename, O_RDONLY | O_BINARY);
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if (fd < 0) {
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error_setg_errno(errp, errno, "Failed to open file: %s", filename);
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return;
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}
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if (read(fd, hdr, EI_NIDENT) != EI_NIDENT) {
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error_setg_errno(errp, errno, "Failed to read file: %s", filename);
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goto fail;
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}
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if (e_ident[0] != ELFMAG0 ||
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e_ident[1] != ELFMAG1 ||
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e_ident[2] != ELFMAG2 ||
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e_ident[3] != ELFMAG3) {
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error_setg(errp, "Bad ELF magic");
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goto fail;
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}
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|
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is64l = e_ident[EI_CLASS] == ELFCLASS64;
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hdr_size = is64l ? sizeof(Elf64_Ehdr) : sizeof(Elf32_Ehdr);
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if (is64) {
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*is64 = is64l;
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}
|
|
|
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off = EI_NIDENT;
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while (hdr != e_ident_local && off < hdr_size) {
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size_t br = read(fd, hdr + off, hdr_size - off);
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switch (br) {
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case 0:
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error_setg(errp, "File too short: %s", filename);
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goto fail;
|
|
case -1:
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error_setg_errno(errp, errno, "Failed to read file: %s",
|
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filename);
|
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goto fail;
|
|
}
|
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off += br;
|
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}
|
|
|
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fail:
|
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close(fd);
|
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}
|
|
|
|
/* return < 0 if error, otherwise the number of bytes loaded in memory */
|
|
int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
|
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void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
|
|
uint64_t *highaddr, int big_endian, int elf_machine,
|
|
int clear_lsb, int data_swab)
|
|
{
|
|
return load_elf_as(filename, translate_fn, translate_opaque, pentry,
|
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lowaddr, highaddr, big_endian, elf_machine, clear_lsb,
|
|
data_swab, NULL);
|
|
}
|
|
|
|
/* return < 0 if error, otherwise the number of bytes loaded in memory */
|
|
int load_elf_as(const char *filename,
|
|
uint64_t (*translate_fn)(void *, uint64_t),
|
|
void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
|
|
uint64_t *highaddr, int big_endian, int elf_machine,
|
|
int clear_lsb, int data_swab, AddressSpace *as)
|
|
{
|
|
int fd, data_order, target_data_order, must_swab, ret = ELF_LOAD_FAILED;
|
|
uint8_t e_ident[EI_NIDENT];
|
|
|
|
fd = open(filename, O_RDONLY | O_BINARY);
|
|
if (fd < 0) {
|
|
perror(filename);
|
|
return -1;
|
|
}
|
|
if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
|
|
goto fail;
|
|
if (e_ident[0] != ELFMAG0 ||
|
|
e_ident[1] != ELFMAG1 ||
|
|
e_ident[2] != ELFMAG2 ||
|
|
e_ident[3] != ELFMAG3) {
|
|
ret = ELF_LOAD_NOT_ELF;
|
|
goto fail;
|
|
}
|
|
#ifdef HOST_WORDS_BIGENDIAN
|
|
data_order = ELFDATA2MSB;
|
|
#else
|
|
data_order = ELFDATA2LSB;
|
|
#endif
|
|
must_swab = data_order != e_ident[EI_DATA];
|
|
if (big_endian) {
|
|
target_data_order = ELFDATA2MSB;
|
|
} else {
|
|
target_data_order = ELFDATA2LSB;
|
|
}
|
|
|
|
if (target_data_order != e_ident[EI_DATA]) {
|
|
ret = ELF_LOAD_WRONG_ENDIAN;
|
|
goto fail;
|
|
}
|
|
|
|
lseek(fd, 0, SEEK_SET);
|
|
if (e_ident[EI_CLASS] == ELFCLASS64) {
|
|
ret = load_elf64(filename, fd, translate_fn, translate_opaque, must_swab,
|
|
pentry, lowaddr, highaddr, elf_machine, clear_lsb,
|
|
data_swab, as);
|
|
} else {
|
|
ret = load_elf32(filename, fd, translate_fn, translate_opaque, must_swab,
|
|
pentry, lowaddr, highaddr, elf_machine, clear_lsb,
|
|
data_swab, as);
|
|
}
|
|
|
|
fail:
|
|
close(fd);
|
|
return ret;
|
|
}
|
|
|
|
static void bswap_uboot_header(uboot_image_header_t *hdr)
|
|
{
|
|
#ifndef HOST_WORDS_BIGENDIAN
|
|
bswap32s(&hdr->ih_magic);
|
|
bswap32s(&hdr->ih_hcrc);
|
|
bswap32s(&hdr->ih_time);
|
|
bswap32s(&hdr->ih_size);
|
|
bswap32s(&hdr->ih_load);
|
|
bswap32s(&hdr->ih_ep);
|
|
bswap32s(&hdr->ih_dcrc);
|
|
#endif
|
|
}
|
|
|
|
|
|
#define ZALLOC_ALIGNMENT 16
|
|
|
|
static void *zalloc(void *x, unsigned items, unsigned size)
|
|
{
|
|
void *p;
|
|
|
|
size *= items;
|
|
size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
|
|
|
|
p = g_malloc(size);
|
|
|
|
return (p);
|
|
}
|
|
|
|
static void zfree(void *x, void *addr)
|
|
{
|
|
g_free(addr);
|
|
}
|
|
|
|
|
|
#define HEAD_CRC 2
|
|
#define EXTRA_FIELD 4
|
|
#define ORIG_NAME 8
|
|
#define COMMENT 0x10
|
|
#define RESERVED 0xe0
|
|
|
|
#define DEFLATED 8
|
|
|
|
ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen)
|
|
{
|
|
z_stream s;
|
|
ssize_t dstbytes;
|
|
int r, i, flags;
|
|
|
|
/* skip header */
|
|
i = 10;
|
|
flags = src[3];
|
|
if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
|
|
puts ("Error: Bad gzipped data\n");
|
|
return -1;
|
|
}
|
|
if ((flags & EXTRA_FIELD) != 0)
|
|
i = 12 + src[10] + (src[11] << 8);
|
|
if ((flags & ORIG_NAME) != 0)
|
|
while (src[i++] != 0)
|
|
;
|
|
if ((flags & COMMENT) != 0)
|
|
while (src[i++] != 0)
|
|
;
|
|
if ((flags & HEAD_CRC) != 0)
|
|
i += 2;
|
|
if (i >= srclen) {
|
|
puts ("Error: gunzip out of data in header\n");
|
|
return -1;
|
|
}
|
|
|
|
s.zalloc = zalloc;
|
|
s.zfree = zfree;
|
|
|
|
r = inflateInit2(&s, -MAX_WBITS);
|
|
if (r != Z_OK) {
|
|
printf ("Error: inflateInit2() returned %d\n", r);
|
|
return (-1);
|
|
}
|
|
s.next_in = src + i;
|
|
s.avail_in = srclen - i;
|
|
s.next_out = dst;
|
|
s.avail_out = dstlen;
|
|
r = inflate(&s, Z_FINISH);
|
|
if (r != Z_OK && r != Z_STREAM_END) {
|
|
printf ("Error: inflate() returned %d\n", r);
|
|
return -1;
|
|
}
|
|
dstbytes = s.next_out - (unsigned char *) dst;
|
|
inflateEnd(&s);
|
|
|
|
return dstbytes;
|
|
}
|
|
|
|
/* Load a U-Boot image. */
|
|
static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
|
|
int *is_linux, uint8_t image_type,
|
|
uint64_t (*translate_fn)(void *, uint64_t),
|
|
void *translate_opaque, AddressSpace *as)
|
|
{
|
|
int fd;
|
|
int size;
|
|
hwaddr address;
|
|
uboot_image_header_t h;
|
|
uboot_image_header_t *hdr = &h;
|
|
uint8_t *data = NULL;
|
|
int ret = -1;
|
|
int do_uncompress = 0;
|
|
|
|
fd = open(filename, O_RDONLY | O_BINARY);
|
|
if (fd < 0)
|
|
return -1;
|
|
|
|
size = read(fd, hdr, sizeof(uboot_image_header_t));
|
|
if (size < 0)
|
|
goto out;
|
|
|
|
bswap_uboot_header(hdr);
|
|
|
|
if (hdr->ih_magic != IH_MAGIC)
|
|
goto out;
|
|
|
|
if (hdr->ih_type != image_type) {
|
|
fprintf(stderr, "Wrong image type %d, expected %d\n", hdr->ih_type,
|
|
image_type);
|
|
goto out;
|
|
}
|
|
|
|
/* TODO: Implement other image types. */
|
|
switch (hdr->ih_type) {
|
|
case IH_TYPE_KERNEL:
|
|
address = hdr->ih_load;
|
|
if (translate_fn) {
|
|
address = translate_fn(translate_opaque, address);
|
|
}
|
|
if (loadaddr) {
|
|
*loadaddr = hdr->ih_load;
|
|
}
|
|
|
|
switch (hdr->ih_comp) {
|
|
case IH_COMP_NONE:
|
|
break;
|
|
case IH_COMP_GZIP:
|
|
do_uncompress = 1;
|
|
break;
|
|
default:
|
|
fprintf(stderr,
|
|
"Unable to load u-boot images with compression type %d\n",
|
|
hdr->ih_comp);
|
|
goto out;
|
|
}
|
|
|
|
if (ep) {
|
|
*ep = hdr->ih_ep;
|
|
}
|
|
|
|
/* TODO: Check CPU type. */
|
|
if (is_linux) {
|
|
if (hdr->ih_os == IH_OS_LINUX) {
|
|
*is_linux = 1;
|
|
} else {
|
|
*is_linux = 0;
|
|
}
|
|
}
|
|
|
|
break;
|
|
case IH_TYPE_RAMDISK:
|
|
address = *loadaddr;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unsupported u-boot image type %d\n", hdr->ih_type);
|
|
goto out;
|
|
}
|
|
|
|
data = g_malloc(hdr->ih_size);
|
|
|
|
if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
|
|
fprintf(stderr, "Error reading file\n");
|
|
goto out;
|
|
}
|
|
|
|
if (do_uncompress) {
|
|
uint8_t *compressed_data;
|
|
size_t max_bytes;
|
|
ssize_t bytes;
|
|
|
|
compressed_data = data;
|
|
max_bytes = UBOOT_MAX_GUNZIP_BYTES;
|
|
data = g_malloc(max_bytes);
|
|
|
|
bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
|
|
g_free(compressed_data);
|
|
if (bytes < 0) {
|
|
fprintf(stderr, "Unable to decompress gzipped image!\n");
|
|
goto out;
|
|
}
|
|
hdr->ih_size = bytes;
|
|
}
|
|
|
|
rom_add_blob_fixed_as(filename, data, hdr->ih_size, address, as);
|
|
|
|
ret = hdr->ih_size;
|
|
|
|
out:
|
|
g_free(data);
|
|
close(fd);
|
|
return ret;
|
|
}
|
|
|
|
int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr,
|
|
int *is_linux,
|
|
uint64_t (*translate_fn)(void *, uint64_t),
|
|
void *translate_opaque)
|
|
{
|
|
return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
|
|
translate_fn, translate_opaque, NULL);
|
|
}
|
|
|
|
int load_uimage_as(const char *filename, hwaddr *ep, hwaddr *loadaddr,
|
|
int *is_linux,
|
|
uint64_t (*translate_fn)(void *, uint64_t),
|
|
void *translate_opaque, AddressSpace *as)
|
|
{
|
|
return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
|
|
translate_fn, translate_opaque, as);
|
|
}
|
|
|
|
/* Load a ramdisk. */
|
|
int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz)
|
|
{
|
|
return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK,
|
|
NULL, NULL, NULL);
|
|
}
|
|
|
|
/* Load a gzip-compressed kernel to a dynamically allocated buffer. */
|
|
int load_image_gzipped_buffer(const char *filename, uint64_t max_sz,
|
|
uint8_t **buffer)
|
|
{
|
|
uint8_t *compressed_data = NULL;
|
|
uint8_t *data = NULL;
|
|
gsize len;
|
|
ssize_t bytes;
|
|
int ret = -1;
|
|
|
|
if (!g_file_get_contents(filename, (char **) &compressed_data, &len,
|
|
NULL)) {
|
|
goto out;
|
|
}
|
|
|
|
/* Is it a gzip-compressed file? */
|
|
if (len < 2 ||
|
|
compressed_data[0] != 0x1f ||
|
|
compressed_data[1] != 0x8b) {
|
|
goto out;
|
|
}
|
|
|
|
if (max_sz > LOAD_IMAGE_MAX_GUNZIP_BYTES) {
|
|
max_sz = LOAD_IMAGE_MAX_GUNZIP_BYTES;
|
|
}
|
|
|
|
data = g_malloc(max_sz);
|
|
bytes = gunzip(data, max_sz, compressed_data, len);
|
|
if (bytes < 0) {
|
|
fprintf(stderr, "%s: unable to decompress gzipped kernel file\n",
|
|
filename);
|
|
goto out;
|
|
}
|
|
|
|
/* trim to actual size and return to caller */
|
|
*buffer = g_realloc(data, bytes);
|
|
ret = bytes;
|
|
/* ownership has been transferred to caller */
|
|
data = NULL;
|
|
|
|
out:
|
|
g_free(compressed_data);
|
|
g_free(data);
|
|
return ret;
|
|
}
|
|
|
|
/* Load a gzip-compressed kernel. */
|
|
int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz)
|
|
{
|
|
int bytes;
|
|
uint8_t *data;
|
|
|
|
bytes = load_image_gzipped_buffer(filename, max_sz, &data);
|
|
if (bytes != -1) {
|
|
rom_add_blob_fixed(filename, data, bytes, addr);
|
|
g_free(data);
|
|
}
|
|
return bytes;
|
|
}
|
|
|
|
/*
|
|
* Functions for reboot-persistent memory regions.
|
|
* - used for vga bios and option roms.
|
|
* - also linux kernel (-kernel / -initrd).
|
|
*/
|
|
|
|
typedef struct Rom Rom;
|
|
|
|
struct Rom {
|
|
char *name;
|
|
char *path;
|
|
|
|
/* datasize is the amount of memory allocated in "data". If datasize is less
|
|
* than romsize, it means that the area from datasize to romsize is filled
|
|
* with zeros.
|
|
*/
|
|
size_t romsize;
|
|
size_t datasize;
|
|
|
|
uint8_t *data;
|
|
MemoryRegion *mr;
|
|
AddressSpace *as;
|
|
int isrom;
|
|
char *fw_dir;
|
|
char *fw_file;
|
|
|
|
hwaddr addr;
|
|
QTAILQ_ENTRY(Rom) next;
|
|
};
|
|
|
|
static FWCfgState *fw_cfg;
|
|
static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
|
|
|
|
static inline bool rom_order_compare(Rom *rom, Rom *item)
|
|
{
|
|
return ((uintptr_t)(void *)rom->as > (uintptr_t)(void *)item->as) ||
|
|
(rom->as == item->as && rom->addr >= item->addr);
|
|
}
|
|
|
|
static void rom_insert(Rom *rom)
|
|
{
|
|
Rom *item;
|
|
|
|
if (roms_loaded) {
|
|
hw_error ("ROM images must be loaded at startup\n");
|
|
}
|
|
|
|
/* The user didn't specify an address space, this is the default */
|
|
if (!rom->as) {
|
|
rom->as = &address_space_memory;
|
|
}
|
|
|
|
/* List is ordered by load address in the same address space */
|
|
QTAILQ_FOREACH(item, &roms, next) {
|
|
if (rom_order_compare(rom, item)) {
|
|
continue;
|
|
}
|
|
QTAILQ_INSERT_BEFORE(item, rom, next);
|
|
return;
|
|
}
|
|
QTAILQ_INSERT_TAIL(&roms, rom, next);
|
|
}
|
|
|
|
static void fw_cfg_resized(const char *id, uint64_t length, void *host)
|
|
{
|
|
if (fw_cfg) {
|
|
fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length);
|
|
}
|
|
}
|
|
|
|
static void *rom_set_mr(Rom *rom, Object *owner, const char *name, bool ro)
|
|
{
|
|
void *data;
|
|
|
|
rom->mr = g_malloc(sizeof(*rom->mr));
|
|
memory_region_init_resizeable_ram(rom->mr, owner, name,
|
|
rom->datasize, rom->romsize,
|
|
fw_cfg_resized,
|
|
&error_fatal);
|
|
memory_region_set_readonly(rom->mr, ro);
|
|
vmstate_register_ram_global(rom->mr);
|
|
|
|
data = memory_region_get_ram_ptr(rom->mr);
|
|
memcpy(data, rom->data, rom->datasize);
|
|
|
|
return data;
|
|
}
|
|
|
|
int rom_add_file(const char *file, const char *fw_dir,
|
|
hwaddr addr, int32_t bootindex,
|
|
bool option_rom, MemoryRegion *mr,
|
|
AddressSpace *as)
|
|
{
|
|
MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
|
|
Rom *rom;
|
|
int rc, fd = -1;
|
|
char devpath[100];
|
|
|
|
if (as && mr) {
|
|
fprintf(stderr, "Specifying an Address Space and Memory Region is " \
|
|
"not valid when loading a rom\n");
|
|
/* We haven't allocated anything so we don't need any cleanup */
|
|
return -1;
|
|
}
|
|
|
|
rom = g_malloc0(sizeof(*rom));
|
|
rom->name = g_strdup(file);
|
|
rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
|
|
rom->as = as;
|
|
if (rom->path == NULL) {
|
|
rom->path = g_strdup(file);
|
|
}
|
|
|
|
fd = open(rom->path, O_RDONLY | O_BINARY);
|
|
if (fd == -1) {
|
|
fprintf(stderr, "Could not open option rom '%s': %s\n",
|
|
rom->path, strerror(errno));
|
|
goto err;
|
|
}
|
|
|
|
if (fw_dir) {
|
|
rom->fw_dir = g_strdup(fw_dir);
|
|
rom->fw_file = g_strdup(file);
|
|
}
|
|
rom->addr = addr;
|
|
rom->romsize = lseek(fd, 0, SEEK_END);
|
|
if (rom->romsize == -1) {
|
|
fprintf(stderr, "rom: file %-20s: get size error: %s\n",
|
|
rom->name, strerror(errno));
|
|
goto err;
|
|
}
|
|
|
|
rom->datasize = rom->romsize;
|
|
rom->data = g_malloc0(rom->datasize);
|
|
lseek(fd, 0, SEEK_SET);
|
|
rc = read(fd, rom->data, rom->datasize);
|
|
if (rc != rom->datasize) {
|
|
fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
|
|
rom->name, rc, rom->datasize);
|
|
goto err;
|
|
}
|
|
close(fd);
|
|
rom_insert(rom);
|
|
if (rom->fw_file && fw_cfg) {
|
|
const char *basename;
|
|
char fw_file_name[FW_CFG_MAX_FILE_PATH];
|
|
void *data;
|
|
|
|
basename = strrchr(rom->fw_file, '/');
|
|
if (basename) {
|
|
basename++;
|
|
} else {
|
|
basename = rom->fw_file;
|
|
}
|
|
snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir,
|
|
basename);
|
|
snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
|
|
|
|
if ((!option_rom || mc->option_rom_has_mr) && mc->rom_file_has_mr) {
|
|
data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, true);
|
|
} else {
|
|
data = rom->data;
|
|
}
|
|
|
|
fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize);
|
|
} else {
|
|
if (mr) {
|
|
rom->mr = mr;
|
|
snprintf(devpath, sizeof(devpath), "/rom@%s", file);
|
|
} else {
|
|
snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr);
|
|
}
|
|
}
|
|
|
|
add_boot_device_path(bootindex, NULL, devpath);
|
|
return 0;
|
|
|
|
err:
|
|
if (fd != -1)
|
|
close(fd);
|
|
|
|
g_free(rom->data);
|
|
g_free(rom->path);
|
|
g_free(rom->name);
|
|
if (fw_dir) {
|
|
g_free(rom->fw_dir);
|
|
g_free(rom->fw_file);
|
|
}
|
|
g_free(rom);
|
|
|
|
return -1;
|
|
}
|
|
|
|
MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
|
|
size_t max_len, hwaddr addr, const char *fw_file_name,
|
|
FWCfgReadCallback fw_callback, void *callback_opaque,
|
|
AddressSpace *as, bool read_only)
|
|
{
|
|
MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
|
|
Rom *rom;
|
|
MemoryRegion *mr = NULL;
|
|
|
|
rom = g_malloc0(sizeof(*rom));
|
|
rom->name = g_strdup(name);
|
|
rom->as = as;
|
|
rom->addr = addr;
|
|
rom->romsize = max_len ? max_len : len;
|
|
rom->datasize = len;
|
|
rom->data = g_malloc0(rom->datasize);
|
|
memcpy(rom->data, blob, len);
|
|
rom_insert(rom);
|
|
if (fw_file_name && fw_cfg) {
|
|
char devpath[100];
|
|
void *data;
|
|
|
|
if (read_only) {
|
|
snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
|
|
} else {
|
|
snprintf(devpath, sizeof(devpath), "/ram@%s", fw_file_name);
|
|
}
|
|
|
|
if (mc->rom_file_has_mr) {
|
|
data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, read_only);
|
|
mr = rom->mr;
|
|
} else {
|
|
data = rom->data;
|
|
}
|
|
|
|
fw_cfg_add_file_callback(fw_cfg, fw_file_name,
|
|
fw_callback, callback_opaque,
|
|
data, rom->datasize, read_only);
|
|
}
|
|
return mr;
|
|
}
|
|
|
|
/* This function is specific for elf program because we don't need to allocate
|
|
* all the rom. We just allocate the first part and the rest is just zeros. This
|
|
* is why romsize and datasize are different. Also, this function seize the
|
|
* memory ownership of "data", so we don't have to allocate and copy the buffer.
|
|
*/
|
|
int rom_add_elf_program(const char *name, void *data, size_t datasize,
|
|
size_t romsize, hwaddr addr, AddressSpace *as)
|
|
{
|
|
Rom *rom;
|
|
|
|
rom = g_malloc0(sizeof(*rom));
|
|
rom->name = g_strdup(name);
|
|
rom->addr = addr;
|
|
rom->datasize = datasize;
|
|
rom->romsize = romsize;
|
|
rom->data = data;
|
|
rom->as = as;
|
|
rom_insert(rom);
|
|
return 0;
|
|
}
|
|
|
|
int rom_add_vga(const char *file)
|
|
{
|
|
return rom_add_file(file, "vgaroms", 0, -1, true, NULL, NULL);
|
|
}
|
|
|
|
int rom_add_option(const char *file, int32_t bootindex)
|
|
{
|
|
return rom_add_file(file, "genroms", 0, bootindex, true, NULL, NULL);
|
|
}
|
|
|
|
static void rom_reset(void *unused)
|
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{
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Rom *rom;
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QTAILQ_FOREACH(rom, &roms, next) {
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if (rom->fw_file) {
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continue;
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}
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if (rom->data == NULL) {
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continue;
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}
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if (rom->mr) {
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void *host = memory_region_get_ram_ptr(rom->mr);
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memcpy(host, rom->data, rom->datasize);
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} else {
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cpu_physical_memory_write_rom(rom->as, rom->addr, rom->data,
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rom->datasize);
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}
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if (rom->isrom) {
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/* rom needs to be written only once */
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g_free(rom->data);
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rom->data = NULL;
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}
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/*
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* The rom loader is really on the same level as firmware in the guest
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* shadowing a ROM into RAM. Such a shadowing mechanism needs to ensure
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* that the instruction cache for that new region is clear, so that the
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* CPU definitely fetches its instructions from the just written data.
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*/
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cpu_flush_icache_range(rom->addr, rom->datasize);
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}
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}
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int rom_check_and_register_reset(void)
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{
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hwaddr addr = 0;
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MemoryRegionSection section;
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Rom *rom;
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AddressSpace *as = NULL;
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QTAILQ_FOREACH(rom, &roms, next) {
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if (rom->fw_file) {
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continue;
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}
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if ((addr > rom->addr) && (as == rom->as)) {
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fprintf(stderr, "rom: requested regions overlap "
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"(rom %s. free=0x" TARGET_FMT_plx
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", addr=0x" TARGET_FMT_plx ")\n",
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rom->name, addr, rom->addr);
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return -1;
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}
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addr = rom->addr;
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addr += rom->romsize;
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section = memory_region_find(rom->mr ? rom->mr : get_system_memory(),
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rom->addr, 1);
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rom->isrom = int128_nz(section.size) && memory_region_is_rom(section.mr);
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memory_region_unref(section.mr);
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as = rom->as;
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}
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qemu_register_reset(rom_reset, NULL);
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roms_loaded = 1;
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return 0;
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}
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void rom_set_fw(FWCfgState *f)
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{
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fw_cfg = f;
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}
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void rom_set_order_override(int order)
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{
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if (!fw_cfg)
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return;
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fw_cfg_set_order_override(fw_cfg, order);
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}
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void rom_reset_order_override(void)
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{
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if (!fw_cfg)
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return;
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fw_cfg_reset_order_override(fw_cfg);
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}
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static Rom *find_rom(hwaddr addr)
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{
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Rom *rom;
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QTAILQ_FOREACH(rom, &roms, next) {
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if (rom->fw_file) {
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continue;
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}
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if (rom->mr) {
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continue;
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}
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if (rom->addr > addr) {
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continue;
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}
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if (rom->addr + rom->romsize < addr) {
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continue;
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}
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return rom;
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}
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return NULL;
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}
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/*
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* Copies memory from registered ROMs to dest. Any memory that is contained in
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* a ROM between addr and addr + size is copied. Note that this can involve
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* multiple ROMs, which need not start at addr and need not end at addr + size.
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*/
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int rom_copy(uint8_t *dest, hwaddr addr, size_t size)
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{
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hwaddr end = addr + size;
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uint8_t *s, *d = dest;
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size_t l = 0;
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Rom *rom;
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QTAILQ_FOREACH(rom, &roms, next) {
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if (rom->fw_file) {
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continue;
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}
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if (rom->mr) {
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continue;
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}
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if (rom->addr + rom->romsize < addr) {
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continue;
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}
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if (rom->addr > end) {
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break;
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}
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d = dest + (rom->addr - addr);
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s = rom->data;
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l = rom->datasize;
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if ((d + l) > (dest + size)) {
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l = dest - d;
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}
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if (l > 0) {
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memcpy(d, s, l);
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}
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if (rom->romsize > rom->datasize) {
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/* If datasize is less than romsize, it means that we didn't
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* allocate all the ROM because the trailing data are only zeros.
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*/
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d += l;
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l = rom->romsize - rom->datasize;
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if ((d + l) > (dest + size)) {
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/* Rom size doesn't fit in the destination area. Adjust to avoid
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* overflow.
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*/
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l = dest - d;
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}
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if (l > 0) {
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memset(d, 0x0, l);
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}
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}
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}
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return (d + l) - dest;
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}
|
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void *rom_ptr(hwaddr addr)
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{
|
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Rom *rom;
|
|
|
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rom = find_rom(addr);
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if (!rom || !rom->data)
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return NULL;
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return rom->data + (addr - rom->addr);
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}
|
|
|
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void hmp_info_roms(Monitor *mon, const QDict *qdict)
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|
{
|
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Rom *rom;
|
|
|
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QTAILQ_FOREACH(rom, &roms, next) {
|
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if (rom->mr) {
|
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monitor_printf(mon, "%s"
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" size=0x%06zx name=\"%s\"\n",
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memory_region_name(rom->mr),
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rom->romsize,
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rom->name);
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} else if (!rom->fw_file) {
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monitor_printf(mon, "addr=" TARGET_FMT_plx
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" size=0x%06zx mem=%s name=\"%s\"\n",
|
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rom->addr, rom->romsize,
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rom->isrom ? "rom" : "ram",
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|
rom->name);
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} else {
|
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monitor_printf(mon, "fw=%s/%s"
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" size=0x%06zx name=\"%s\"\n",
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rom->fw_dir,
|
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rom->fw_file,
|
|
rom->romsize,
|
|
rom->name);
|
|
}
|
|
}
|
|
}
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