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/*
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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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|
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#include "hw/hw.h" |
46 |
#include "disas/disas.h" |
47 |
#include "monitor/monitor.h" |
48 |
#include "sysemu/sysemu.h" |
49 |
#include "hw/uboot_image.h" |
50 |
#include "hw/loader.h" |
51 |
#include "hw/nvram/fw_cfg.h" |
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#include "exec/memory.h" |
53 |
#include "exec/address-spaces.h" |
54 |
|
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#include <zlib.h> |
56 |
|
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static int roms_loaded; |
58 |
|
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/* return the size or -1 if error */
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int get_image_size(const char *filename) |
61 |
{ |
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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; |
66 |
size = lseek(fd, 0, SEEK_END);
|
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close(fd); |
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return size;
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} |
70 |
|
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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); |
77 |
if (fd < 0) |
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return -1; |
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size = lseek(fd, 0, SEEK_END);
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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; |
84 |
} |
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close(fd); |
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return size;
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} |
88 |
|
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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; |
95 |
|
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buf = g_malloc(nbytes); |
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did = read(fd, buf, nbytes); |
98 |
if (did > 0) |
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rom_add_blob_fixed("read", buf, did, dst_addr);
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g_free(buf); |
101 |
return did;
|
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} |
103 |
|
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/* return the size or -1 if error */
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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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int size;
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|
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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(filename, addr, -1);
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} |
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return size;
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} |
119 |
|
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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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|
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if (buf_size <= 0) return; |
127 |
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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} |
135 |
} |
136 |
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/* A.OUT loader */
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|
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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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}; |
150 |
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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); |
155 |
bswap32s(&e->a_data); |
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bswap32s(&e->a_bss); |
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bswap32s(&e->a_syms); |
158 |
bswap32s(&e->a_entry); |
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bswap32s(&e->a_trsize); |
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bswap32s(&e->a_drsize); |
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} |
162 |
|
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#define N_MAGIC(exec) ((exec).a_info & 0xffff) |
164 |
#define OMAGIC 0407 |
165 |
#define NMAGIC 0410 |
166 |
#define ZMAGIC 0413 |
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#define QMAGIC 0314 |
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#define _N_HDROFF(x) (1024 - sizeof (struct exec)) |
169 |
#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))) |
172 |
#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)) |
174 |
|
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#define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
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|
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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))) |
180 |
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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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{ |
185 |
int fd;
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ssize_t size, ret; |
187 |
struct exec e;
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uint32_t magic; |
189 |
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fd = open(filename, O_RDONLY | O_BINARY); |
191 |
if (fd < 0) |
192 |
return -1; |
193 |
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size = read(fd, &e, sizeof(e));
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if (size < 0) |
196 |
goto fail;
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if (bswap_needed) {
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bswap_ahdr(&e); |
200 |
} |
201 |
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magic = N_MAGIC(e); |
203 |
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); |
210 |
size = read_targphys(filename, fd, addr, e.a_text + e.a_data); |
211 |
if (size < 0) |
212 |
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); |
218 |
size = read_targphys(filename, fd, addr, e.a_text); |
219 |
if (size < 0) |
220 |
goto fail;
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ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size), |
222 |
e.a_data); |
223 |
if (ret < 0) |
224 |
goto fail;
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size += ret; |
226 |
break;
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default:
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goto fail;
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} |
230 |
close(fd); |
231 |
return size;
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fail:
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close(fd); |
234 |
return -1; |
235 |
} |
236 |
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/* ELF loader */
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238 |
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static void *load_at(int fd, int offset, int size) |
240 |
{ |
241 |
void *ptr;
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242 |
if (lseek(fd, offset, SEEK_SET) < 0) |
243 |
return NULL; |
244 |
ptr = g_malloc(size); |
245 |
if (read(fd, ptr, size) != size) {
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g_free(ptr); |
247 |
return NULL; |
248 |
} |
249 |
return ptr;
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} |
251 |
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#ifdef ELF_CLASS
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#undef ELF_CLASS
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#endif
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255 |
|
256 |
#define ELF_CLASS ELFCLASS32
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#include "elf.h" |
258 |
|
259 |
#define SZ 32 |
260 |
#define elf_word uint32_t
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261 |
#define elf_sword int32_t
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#define bswapSZs bswap32s
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#include "hw/elf_ops.h" |
264 |
|
265 |
#undef elfhdr
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266 |
#undef elf_phdr
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267 |
#undef elf_shdr
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268 |
#undef elf_sym
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269 |
#undef elf_note
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270 |
#undef elf_word
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271 |
#undef elf_sword
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272 |
#undef bswapSZs
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273 |
#undef SZ
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274 |
#define elfhdr elf64_hdr
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275 |
#define elf_phdr elf64_phdr
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276 |
#define elf_note elf64_note
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277 |
#define elf_shdr elf64_shdr
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278 |
#define elf_sym elf64_sym
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279 |
#define elf_word uint64_t
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280 |
#define elf_sword int64_t
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281 |
#define bswapSZs bswap64s
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282 |
#define SZ 64 |
283 |
#include "hw/elf_ops.h" |
284 |
|
285 |
/* return < 0 if error, otherwise the number of bytes loaded in memory */
|
286 |
int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t), |
287 |
void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
|
288 |
uint64_t *highaddr, int big_endian, int elf_machine, int clear_lsb) |
289 |
{ |
290 |
int fd, data_order, target_data_order, must_swab, ret;
|
291 |
uint8_t e_ident[EI_NIDENT]; |
292 |
|
293 |
fd = open(filename, O_RDONLY | O_BINARY); |
294 |
if (fd < 0) { |
295 |
perror(filename); |
296 |
return -1; |
297 |
} |
298 |
if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident)) |
299 |
goto fail;
|
300 |
if (e_ident[0] != ELFMAG0 || |
301 |
e_ident[1] != ELFMAG1 ||
|
302 |
e_ident[2] != ELFMAG2 ||
|
303 |
e_ident[3] != ELFMAG3)
|
304 |
goto fail;
|
305 |
#ifdef HOST_WORDS_BIGENDIAN
|
306 |
data_order = ELFDATA2MSB; |
307 |
#else
|
308 |
data_order = ELFDATA2LSB; |
309 |
#endif
|
310 |
must_swab = data_order != e_ident[EI_DATA]; |
311 |
if (big_endian) {
|
312 |
target_data_order = ELFDATA2MSB; |
313 |
} else {
|
314 |
target_data_order = ELFDATA2LSB; |
315 |
} |
316 |
|
317 |
if (target_data_order != e_ident[EI_DATA]) {
|
318 |
goto fail;
|
319 |
} |
320 |
|
321 |
lseek(fd, 0, SEEK_SET);
|
322 |
if (e_ident[EI_CLASS] == ELFCLASS64) {
|
323 |
ret = load_elf64(filename, fd, translate_fn, translate_opaque, must_swab, |
324 |
pentry, lowaddr, highaddr, elf_machine, clear_lsb); |
325 |
} else {
|
326 |
ret = load_elf32(filename, fd, translate_fn, translate_opaque, must_swab, |
327 |
pentry, lowaddr, highaddr, elf_machine, clear_lsb); |
328 |
} |
329 |
|
330 |
close(fd); |
331 |
return ret;
|
332 |
|
333 |
fail:
|
334 |
close(fd); |
335 |
return -1; |
336 |
} |
337 |
|
338 |
static void bswap_uboot_header(uboot_image_header_t *hdr) |
339 |
{ |
340 |
#ifndef HOST_WORDS_BIGENDIAN
|
341 |
bswap32s(&hdr->ih_magic); |
342 |
bswap32s(&hdr->ih_hcrc); |
343 |
bswap32s(&hdr->ih_time); |
344 |
bswap32s(&hdr->ih_size); |
345 |
bswap32s(&hdr->ih_load); |
346 |
bswap32s(&hdr->ih_ep); |
347 |
bswap32s(&hdr->ih_dcrc); |
348 |
#endif
|
349 |
} |
350 |
|
351 |
|
352 |
#define ZALLOC_ALIGNMENT 16 |
353 |
|
354 |
static void *zalloc(void *x, unsigned items, unsigned size) |
355 |
{ |
356 |
void *p;
|
357 |
|
358 |
size *= items; |
359 |
size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1); |
360 |
|
361 |
p = g_malloc(size); |
362 |
|
363 |
return (p);
|
364 |
} |
365 |
|
366 |
static void zfree(void *x, void *addr) |
367 |
{ |
368 |
g_free(addr); |
369 |
} |
370 |
|
371 |
|
372 |
#define HEAD_CRC 2 |
373 |
#define EXTRA_FIELD 4 |
374 |
#define ORIG_NAME 8 |
375 |
#define COMMENT 0x10 |
376 |
#define RESERVED 0xe0 |
377 |
|
378 |
#define DEFLATED 8 |
379 |
|
380 |
/* This is the usual maximum in uboot, so if a uImage overflows this, it would
|
381 |
* overflow on real hardware too. */
|
382 |
#define UBOOT_MAX_GUNZIP_BYTES (64 << 20) |
383 |
|
384 |
static ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, |
385 |
size_t srclen) |
386 |
{ |
387 |
z_stream s; |
388 |
ssize_t dstbytes; |
389 |
int r, i, flags;
|
390 |
|
391 |
/* skip header */
|
392 |
i = 10;
|
393 |
flags = src[3];
|
394 |
if (src[2] != DEFLATED || (flags & RESERVED) != 0) { |
395 |
puts ("Error: Bad gzipped data\n");
|
396 |
return -1; |
397 |
} |
398 |
if ((flags & EXTRA_FIELD) != 0) |
399 |
i = 12 + src[10] + (src[11] << 8); |
400 |
if ((flags & ORIG_NAME) != 0) |
401 |
while (src[i++] != 0) |
402 |
; |
403 |
if ((flags & COMMENT) != 0) |
404 |
while (src[i++] != 0) |
405 |
; |
406 |
if ((flags & HEAD_CRC) != 0) |
407 |
i += 2;
|
408 |
if (i >= srclen) {
|
409 |
puts ("Error: gunzip out of data in header\n");
|
410 |
return -1; |
411 |
} |
412 |
|
413 |
s.zalloc = zalloc; |
414 |
s.zfree = zfree; |
415 |
|
416 |
r = inflateInit2(&s, -MAX_WBITS); |
417 |
if (r != Z_OK) {
|
418 |
printf ("Error: inflateInit2() returned %d\n", r);
|
419 |
return (-1); |
420 |
} |
421 |
s.next_in = src + i; |
422 |
s.avail_in = srclen - i; |
423 |
s.next_out = dst; |
424 |
s.avail_out = dstlen; |
425 |
r = inflate(&s, Z_FINISH); |
426 |
if (r != Z_OK && r != Z_STREAM_END) {
|
427 |
printf ("Error: inflate() returned %d\n", r);
|
428 |
return -1; |
429 |
} |
430 |
dstbytes = s.next_out - (unsigned char *) dst; |
431 |
inflateEnd(&s); |
432 |
|
433 |
return dstbytes;
|
434 |
} |
435 |
|
436 |
/* Load a U-Boot image. */
|
437 |
int load_uimage(const char *filename, hwaddr *ep, |
438 |
hwaddr *loadaddr, int *is_linux)
|
439 |
{ |
440 |
int fd;
|
441 |
int size;
|
442 |
uboot_image_header_t h; |
443 |
uboot_image_header_t *hdr = &h; |
444 |
uint8_t *data = NULL;
|
445 |
int ret = -1; |
446 |
|
447 |
fd = open(filename, O_RDONLY | O_BINARY); |
448 |
if (fd < 0) |
449 |
return -1; |
450 |
|
451 |
size = read(fd, hdr, sizeof(uboot_image_header_t));
|
452 |
if (size < 0) |
453 |
goto out;
|
454 |
|
455 |
bswap_uboot_header(hdr); |
456 |
|
457 |
if (hdr->ih_magic != IH_MAGIC)
|
458 |
goto out;
|
459 |
|
460 |
/* TODO: Implement other image types. */
|
461 |
if (hdr->ih_type != IH_TYPE_KERNEL) {
|
462 |
fprintf(stderr, "Can only load u-boot image type \"kernel\"\n");
|
463 |
goto out;
|
464 |
} |
465 |
|
466 |
switch (hdr->ih_comp) {
|
467 |
case IH_COMP_NONE:
|
468 |
case IH_COMP_GZIP:
|
469 |
break;
|
470 |
default:
|
471 |
fprintf(stderr, |
472 |
"Unable to load u-boot images with compression type %d\n",
|
473 |
hdr->ih_comp); |
474 |
goto out;
|
475 |
} |
476 |
|
477 |
/* TODO: Check CPU type. */
|
478 |
if (is_linux) {
|
479 |
if (hdr->ih_os == IH_OS_LINUX)
|
480 |
*is_linux = 1;
|
481 |
else
|
482 |
*is_linux = 0;
|
483 |
} |
484 |
|
485 |
*ep = hdr->ih_ep; |
486 |
data = g_malloc(hdr->ih_size); |
487 |
|
488 |
if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
|
489 |
fprintf(stderr, "Error reading file\n");
|
490 |
goto out;
|
491 |
} |
492 |
|
493 |
if (hdr->ih_comp == IH_COMP_GZIP) {
|
494 |
uint8_t *compressed_data; |
495 |
size_t max_bytes; |
496 |
ssize_t bytes; |
497 |
|
498 |
compressed_data = data; |
499 |
max_bytes = UBOOT_MAX_GUNZIP_BYTES; |
500 |
data = g_malloc(max_bytes); |
501 |
|
502 |
bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size); |
503 |
g_free(compressed_data); |
504 |
if (bytes < 0) { |
505 |
fprintf(stderr, "Unable to decompress gzipped image!\n");
|
506 |
goto out;
|
507 |
} |
508 |
hdr->ih_size = bytes; |
509 |
} |
510 |
|
511 |
rom_add_blob_fixed(filename, data, hdr->ih_size, hdr->ih_load); |
512 |
|
513 |
if (loadaddr)
|
514 |
*loadaddr = hdr->ih_load; |
515 |
|
516 |
ret = hdr->ih_size; |
517 |
|
518 |
out:
|
519 |
if (data)
|
520 |
g_free(data); |
521 |
close(fd); |
522 |
return ret;
|
523 |
} |
524 |
|
525 |
/*
|
526 |
* Functions for reboot-persistent memory regions.
|
527 |
* - used for vga bios and option roms.
|
528 |
* - also linux kernel (-kernel / -initrd).
|
529 |
*/
|
530 |
|
531 |
typedef struct Rom Rom; |
532 |
|
533 |
struct Rom {
|
534 |
char *name;
|
535 |
char *path;
|
536 |
|
537 |
/* datasize is the amount of memory allocated in "data". If datasize is less
|
538 |
* than romsize, it means that the area from datasize to romsize is filled
|
539 |
* with zeros.
|
540 |
*/
|
541 |
size_t romsize; |
542 |
size_t datasize; |
543 |
|
544 |
uint8_t *data; |
545 |
int isrom;
|
546 |
char *fw_dir;
|
547 |
char *fw_file;
|
548 |
|
549 |
hwaddr addr; |
550 |
QTAILQ_ENTRY(Rom) next; |
551 |
}; |
552 |
|
553 |
static FWCfgState *fw_cfg;
|
554 |
static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
|
555 |
|
556 |
static void rom_insert(Rom *rom) |
557 |
{ |
558 |
Rom *item; |
559 |
|
560 |
if (roms_loaded) {
|
561 |
hw_error ("ROM images must be loaded at startup\n");
|
562 |
} |
563 |
|
564 |
/* list is ordered by load address */
|
565 |
QTAILQ_FOREACH(item, &roms, next) { |
566 |
if (rom->addr >= item->addr)
|
567 |
continue;
|
568 |
QTAILQ_INSERT_BEFORE(item, rom, next); |
569 |
return;
|
570 |
} |
571 |
QTAILQ_INSERT_TAIL(&roms, rom, next); |
572 |
} |
573 |
|
574 |
int rom_add_file(const char *file, const char *fw_dir, |
575 |
hwaddr addr, int32_t bootindex) |
576 |
{ |
577 |
Rom *rom; |
578 |
int rc, fd = -1; |
579 |
char devpath[100]; |
580 |
|
581 |
rom = g_malloc0(sizeof(*rom));
|
582 |
rom->name = g_strdup(file); |
583 |
rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name); |
584 |
if (rom->path == NULL) { |
585 |
rom->path = g_strdup(file); |
586 |
} |
587 |
|
588 |
fd = open(rom->path, O_RDONLY | O_BINARY); |
589 |
if (fd == -1) { |
590 |
fprintf(stderr, "Could not open option rom '%s': %s\n",
|
591 |
rom->path, strerror(errno)); |
592 |
goto err;
|
593 |
} |
594 |
|
595 |
if (fw_dir) {
|
596 |
rom->fw_dir = g_strdup(fw_dir); |
597 |
rom->fw_file = g_strdup(file); |
598 |
} |
599 |
rom->addr = addr; |
600 |
rom->romsize = lseek(fd, 0, SEEK_END);
|
601 |
rom->datasize = rom->romsize; |
602 |
rom->data = g_malloc0(rom->datasize); |
603 |
lseek(fd, 0, SEEK_SET);
|
604 |
rc = read(fd, rom->data, rom->datasize); |
605 |
if (rc != rom->datasize) {
|
606 |
fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
|
607 |
rom->name, rc, rom->datasize); |
608 |
goto err;
|
609 |
} |
610 |
close(fd); |
611 |
rom_insert(rom); |
612 |
if (rom->fw_file && fw_cfg) {
|
613 |
const char *basename; |
614 |
char fw_file_name[56]; |
615 |
|
616 |
basename = strrchr(rom->fw_file, '/');
|
617 |
if (basename) {
|
618 |
basename++; |
619 |
} else {
|
620 |
basename = rom->fw_file; |
621 |
} |
622 |
snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir, |
623 |
basename); |
624 |
fw_cfg_add_file(fw_cfg, fw_file_name, rom->data, rom->romsize); |
625 |
snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name); |
626 |
} else {
|
627 |
snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr); |
628 |
} |
629 |
|
630 |
add_boot_device_path(bootindex, NULL, devpath);
|
631 |
return 0; |
632 |
|
633 |
err:
|
634 |
if (fd != -1) |
635 |
close(fd); |
636 |
g_free(rom->data); |
637 |
g_free(rom->path); |
638 |
g_free(rom->name); |
639 |
g_free(rom); |
640 |
return -1; |
641 |
} |
642 |
|
643 |
int rom_add_blob(const char *name, const void *blob, size_t len, |
644 |
hwaddr addr) |
645 |
{ |
646 |
Rom *rom; |
647 |
|
648 |
rom = g_malloc0(sizeof(*rom));
|
649 |
rom->name = g_strdup(name); |
650 |
rom->addr = addr; |
651 |
rom->romsize = len; |
652 |
rom->datasize = len; |
653 |
rom->data = g_malloc0(rom->datasize); |
654 |
memcpy(rom->data, blob, len); |
655 |
rom_insert(rom); |
656 |
return 0; |
657 |
} |
658 |
|
659 |
/* This function is specific for elf program because we don't need to allocate
|
660 |
* all the rom. We just allocate the first part and the rest is just zeros. This
|
661 |
* is why romsize and datasize are different. Also, this function seize the
|
662 |
* memory ownership of "data", so we don't have to allocate and copy the buffer.
|
663 |
*/
|
664 |
int rom_add_elf_program(const char *name, void *data, size_t datasize, |
665 |
size_t romsize, hwaddr addr) |
666 |
{ |
667 |
Rom *rom; |
668 |
|
669 |
rom = g_malloc0(sizeof(*rom));
|
670 |
rom->name = g_strdup(name); |
671 |
rom->addr = addr; |
672 |
rom->datasize = datasize; |
673 |
rom->romsize = romsize; |
674 |
rom->data = data; |
675 |
rom_insert(rom); |
676 |
return 0; |
677 |
} |
678 |
|
679 |
int rom_add_vga(const char *file) |
680 |
{ |
681 |
return rom_add_file(file, "vgaroms", 0, -1); |
682 |
} |
683 |
|
684 |
int rom_add_option(const char *file, int32_t bootindex) |
685 |
{ |
686 |
return rom_add_file(file, "genroms", 0, bootindex); |
687 |
} |
688 |
|
689 |
static void rom_reset(void *unused) |
690 |
{ |
691 |
Rom *rom; |
692 |
|
693 |
QTAILQ_FOREACH(rom, &roms, next) { |
694 |
if (rom->fw_file) {
|
695 |
continue;
|
696 |
} |
697 |
if (rom->data == NULL) { |
698 |
continue;
|
699 |
} |
700 |
cpu_physical_memory_write_rom(rom->addr, rom->data, rom->datasize); |
701 |
if (rom->isrom) {
|
702 |
/* rom needs to be written only once */
|
703 |
g_free(rom->data); |
704 |
rom->data = NULL;
|
705 |
} |
706 |
} |
707 |
} |
708 |
|
709 |
int rom_load_all(void) |
710 |
{ |
711 |
hwaddr addr = 0;
|
712 |
MemoryRegionSection section; |
713 |
Rom *rom; |
714 |
|
715 |
QTAILQ_FOREACH(rom, &roms, next) { |
716 |
if (rom->fw_file) {
|
717 |
continue;
|
718 |
} |
719 |
if (addr > rom->addr) {
|
720 |
fprintf(stderr, "rom: requested regions overlap "
|
721 |
"(rom %s. free=0x" TARGET_FMT_plx
|
722 |
", addr=0x" TARGET_FMT_plx ")\n", |
723 |
rom->name, addr, rom->addr); |
724 |
return -1; |
725 |
} |
726 |
addr = rom->addr; |
727 |
addr += rom->romsize; |
728 |
section = memory_region_find(get_system_memory(), rom->addr, 1);
|
729 |
rom->isrom = section.size && memory_region_is_rom(section.mr); |
730 |
} |
731 |
qemu_register_reset(rom_reset, NULL);
|
732 |
roms_loaded = 1;
|
733 |
return 0; |
734 |
} |
735 |
|
736 |
void rom_set_fw(void *f) |
737 |
{ |
738 |
fw_cfg = f; |
739 |
} |
740 |
|
741 |
static Rom *find_rom(hwaddr addr)
|
742 |
{ |
743 |
Rom *rom; |
744 |
|
745 |
QTAILQ_FOREACH(rom, &roms, next) { |
746 |
if (rom->fw_file) {
|
747 |
continue;
|
748 |
} |
749 |
if (rom->addr > addr) {
|
750 |
continue;
|
751 |
} |
752 |
if (rom->addr + rom->romsize < addr) {
|
753 |
continue;
|
754 |
} |
755 |
return rom;
|
756 |
} |
757 |
return NULL; |
758 |
} |
759 |
|
760 |
/*
|
761 |
* Copies memory from registered ROMs to dest. Any memory that is contained in
|
762 |
* a ROM between addr and addr + size is copied. Note that this can involve
|
763 |
* multiple ROMs, which need not start at addr and need not end at addr + size.
|
764 |
*/
|
765 |
int rom_copy(uint8_t *dest, hwaddr addr, size_t size)
|
766 |
{ |
767 |
hwaddr end = addr + size; |
768 |
uint8_t *s, *d = dest; |
769 |
size_t l = 0;
|
770 |
Rom *rom; |
771 |
|
772 |
QTAILQ_FOREACH(rom, &roms, next) { |
773 |
if (rom->fw_file) {
|
774 |
continue;
|
775 |
} |
776 |
if (rom->addr + rom->romsize < addr) {
|
777 |
continue;
|
778 |
} |
779 |
if (rom->addr > end) {
|
780 |
break;
|
781 |
} |
782 |
if (!rom->data) {
|
783 |
continue;
|
784 |
} |
785 |
|
786 |
d = dest + (rom->addr - addr); |
787 |
s = rom->data; |
788 |
l = rom->datasize; |
789 |
|
790 |
if ((d + l) > (dest + size)) {
|
791 |
l = dest - d; |
792 |
} |
793 |
|
794 |
memcpy(d, s, l); |
795 |
|
796 |
if (rom->romsize > rom->datasize) {
|
797 |
/* If datasize is less than romsize, it means that we didn't
|
798 |
* allocate all the ROM because the trailing data are only zeros.
|
799 |
*/
|
800 |
|
801 |
d += l; |
802 |
l = rom->romsize - rom->datasize; |
803 |
|
804 |
if ((d + l) > (dest + size)) {
|
805 |
/* Rom size doesn't fit in the destination area. Adjust to avoid
|
806 |
* overflow.
|
807 |
*/
|
808 |
l = dest - d; |
809 |
} |
810 |
|
811 |
if (l > 0) { |
812 |
memset(d, 0x0, l);
|
813 |
} |
814 |
} |
815 |
} |
816 |
|
817 |
return (d + l) - dest;
|
818 |
} |
819 |
|
820 |
void *rom_ptr(hwaddr addr)
|
821 |
{ |
822 |
Rom *rom; |
823 |
|
824 |
rom = find_rom(addr); |
825 |
if (!rom || !rom->data)
|
826 |
return NULL; |
827 |
return rom->data + (addr - rom->addr);
|
828 |
} |
829 |
|
830 |
void do_info_roms(Monitor *mon, const QDict *qdict) |
831 |
{ |
832 |
Rom *rom; |
833 |
|
834 |
QTAILQ_FOREACH(rom, &roms, next) { |
835 |
if (!rom->fw_file) {
|
836 |
monitor_printf(mon, "addr=" TARGET_FMT_plx
|
837 |
" size=0x%06zx mem=%s name=\"%s\"\n",
|
838 |
rom->addr, rom->romsize, |
839 |
rom->isrom ? "rom" : "ram", |
840 |
rom->name); |
841 |
} else {
|
842 |
monitor_printf(mon, "fw=%s/%s"
|
843 |
" size=0x%06zx name=\"%s\"\n",
|
844 |
rom->fw_dir, |
845 |
rom->fw_file, |
846 |
rom->romsize, |
847 |
rom->name); |
848 |
} |
849 |
} |
850 |
} |