2 * QEMU Executable loader
4 * Copyright (c) 2006 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * Gunzip functionality in this file is derived from u-boot:
26 * (C) Copyright 2008 Semihalf
28 * (C) Copyright 2000-2005
29 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
31 * This program is free software; you can redistribute it and/or
32 * modify it under the terms of the GNU General Public License as
33 * published by the Free Software Foundation; either version 2 of
34 * the License, or (at your option) any later version.
36 * This program is distributed in the hope that it will be useful,
37 * but WITHOUT ANY WARRANTY; without even the implied warranty of
38 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
39 * GNU General Public License for more details.
41 * You should have received a copy of the GNU General Public License
42 * along with this program; if not, write to the Free Software
43 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
47 #include "qemu-common.h"
50 #include "uboot_image.h"
54 /* return the size or -1 if error */
55 int get_image_size(const char *filename)
58 fd = open(filename, O_RDONLY | O_BINARY);
61 size = lseek(fd, 0, SEEK_END);
66 /* return the size or -1 if error */
67 /* deprecated, because caller does not specify buffer size! */
68 int load_image(const char *filename, uint8_t *addr)
71 fd = open(filename, O_RDONLY | O_BINARY);
74 size = lseek(fd, 0, SEEK_END);
75 lseek(fd, 0, SEEK_SET);
76 if (read(fd, addr, size) != size) {
84 /* return the amount read, just like fread. 0 may mean error or eof */
85 int fread_targphys(target_phys_addr_t dst_addr, size_t nbytes, FILE *f)
88 target_phys_addr_t dst_begin = dst_addr;
92 want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes;
93 did = fread(buf, 1, want, f);
94 if (did != want) break;
96 cpu_physical_memory_write_rom(dst_addr, buf, did);
100 return dst_addr - dst_begin;
103 /* returns 0 on error, 1 if ok */
104 int fread_targphys_ok(target_phys_addr_t dst_addr, size_t nbytes, FILE *f)
106 return fread_targphys(dst_addr, nbytes, f) == nbytes;
109 /* read()-like version */
110 int read_targphys(int fd, target_phys_addr_t dst_addr, size_t nbytes)
113 target_phys_addr_t dst_begin = dst_addr;
117 want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes;
118 did = read(fd, buf, want);
119 if (did != want) break;
121 cpu_physical_memory_write_rom(dst_addr, buf, did);
125 return dst_addr - dst_begin;
128 /* return the size or -1 if error */
129 int load_image_targphys(const char *filename,
130 target_phys_addr_t addr, int max_sz)
135 f = fopen(filename, "rb");
138 got = fread_targphys(addr, max_sz, f);
139 if (ferror(f)) { fclose(f); return -1; }
145 void pstrcpy_targphys(target_phys_addr_t dest, int buf_size,
148 static const uint8_t nul_byte = 0;
151 if (buf_size <= 0) return;
152 nulp = memchr(source, 0, buf_size);
154 cpu_physical_memory_write_rom(dest, (uint8_t *)source,
155 (nulp - source) + 1);
157 cpu_physical_memory_write_rom(dest, (uint8_t *)source, buf_size - 1);
158 cpu_physical_memory_write_rom(dest, &nul_byte, 1);
166 uint32_t a_info; /* Use macros N_MAGIC, etc for access */
167 uint32_t a_text; /* length of text, in bytes */
168 uint32_t a_data; /* length of data, in bytes */
169 uint32_t a_bss; /* length of uninitialized data area, in bytes */
170 uint32_t a_syms; /* length of symbol table data in file, in bytes */
171 uint32_t a_entry; /* start address */
172 uint32_t a_trsize; /* length of relocation info for text, in bytes */
173 uint32_t a_drsize; /* length of relocation info for data, in bytes */
177 static void bswap_ahdr(struct exec *e)
179 bswap32s(&e->a_info);
180 bswap32s(&e->a_text);
181 bswap32s(&e->a_data);
183 bswap32s(&e->a_syms);
184 bswap32s(&e->a_entry);
185 bswap32s(&e->a_trsize);
186 bswap32s(&e->a_drsize);
189 #define bswap_ahdr(x) do { } while (0)
192 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
197 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
198 #define N_TXTOFF(x) \
199 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
200 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
201 #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? TARGET_PAGE_SIZE : 0)
202 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
203 #define _N_SEGMENT_ROUND(x) (((x) + TARGET_PAGE_SIZE - 1) & ~(TARGET_PAGE_SIZE - 1))
205 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
207 #define N_DATADDR(x) \
208 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
209 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
212 int load_aout(const char *filename, target_phys_addr_t addr, int max_sz)
218 fd = open(filename, O_RDONLY | O_BINARY);
222 size = read(fd, &e, sizeof(e));
233 if (e.a_text + e.a_data > max_sz)
235 lseek(fd, N_TXTOFF(e), SEEK_SET);
236 size = read_targphys(fd, addr, e.a_text + e.a_data);
241 if (N_DATADDR(e) + e.a_data > max_sz)
243 lseek(fd, N_TXTOFF(e), SEEK_SET);
244 size = read_targphys(fd, addr, e.a_text);
247 ret = read_targphys(fd, addr + N_DATADDR(e), e.a_data);
264 static void *load_at(int fd, int offset, int size)
267 if (lseek(fd, offset, SEEK_SET) < 0)
269 ptr = qemu_malloc(size);
272 if (read(fd, ptr, size) != size) {
280 #define ELF_CLASS ELFCLASS32
284 #define elf_word uint32_t
285 #define elf_sword int32_t
286 #define bswapSZs bswap32s
298 #define elfhdr elf64_hdr
299 #define elf_phdr elf64_phdr
300 #define elf_note elf64_note
301 #define elf_shdr elf64_shdr
302 #define elf_sym elf64_sym
303 #define elf_word uint64_t
304 #define elf_sword int64_t
305 #define bswapSZs bswap64s
309 /* return < 0 if error, otherwise the number of bytes loaded in memory */
310 int load_elf(const char *filename, int64_t address_offset,
311 uint64_t *pentry, uint64_t *lowaddr, uint64_t *highaddr)
313 int fd, data_order, host_data_order, must_swab, ret;
314 uint8_t e_ident[EI_NIDENT];
316 fd = open(filename, O_RDONLY | O_BINARY);
321 if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
323 if (e_ident[0] != ELFMAG0 ||
324 e_ident[1] != ELFMAG1 ||
325 e_ident[2] != ELFMAG2 ||
326 e_ident[3] != ELFMAG3)
328 #ifdef WORDS_BIGENDIAN
329 data_order = ELFDATA2MSB;
331 data_order = ELFDATA2LSB;
333 must_swab = data_order != e_ident[EI_DATA];
335 #ifdef TARGET_WORDS_BIGENDIAN
336 host_data_order = ELFDATA2MSB;
338 host_data_order = ELFDATA2LSB;
340 if (host_data_order != e_ident[EI_DATA])
343 lseek(fd, 0, SEEK_SET);
344 if (e_ident[EI_CLASS] == ELFCLASS64) {
345 ret = load_elf64(fd, address_offset, must_swab, pentry,
348 ret = load_elf32(fd, address_offset, must_swab, pentry,
360 static void bswap_uboot_header(uboot_image_header_t *hdr)
362 #ifndef WORDS_BIGENDIAN
363 bswap32s(&hdr->ih_magic);
364 bswap32s(&hdr->ih_hcrc);
365 bswap32s(&hdr->ih_time);
366 bswap32s(&hdr->ih_size);
367 bswap32s(&hdr->ih_load);
368 bswap32s(&hdr->ih_ep);
369 bswap32s(&hdr->ih_dcrc);
374 #define ZALLOC_ALIGNMENT 16
376 static void *zalloc(void *x, unsigned items, unsigned size)
381 size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
383 p = qemu_malloc(size);
388 static void zfree(void *x, void *addr, unsigned nb)
395 #define EXTRA_FIELD 4
398 #define RESERVED 0xe0
402 /* This is the maximum in uboot, so if a uImage overflows this, it would
403 * overflow on real hardware too. */
404 #define UBOOT_MAX_GUNZIP_BYTES 0x800000
406 static ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src,
416 if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
417 puts ("Error: Bad gzipped data\n");
420 if ((flags & EXTRA_FIELD) != 0)
421 i = 12 + src[10] + (src[11] << 8);
422 if ((flags & ORIG_NAME) != 0)
423 while (src[i++] != 0)
425 if ((flags & COMMENT) != 0)
426 while (src[i++] != 0)
428 if ((flags & HEAD_CRC) != 0)
431 puts ("Error: gunzip out of data in header\n");
436 s.zfree = (free_func)zfree;
438 r = inflateInit2(&s, -MAX_WBITS);
440 printf ("Error: inflateInit2() returned %d\n", r);
444 s.avail_in = srclen - i;
446 s.avail_out = dstlen;
447 r = inflate(&s, Z_FINISH);
448 if (r != Z_OK && r != Z_STREAM_END) {
449 printf ("Error: inflate() returned %d\n", r);
452 dstbytes = s.next_out - (unsigned char *) dst;
458 /* Load a U-Boot image. */
459 int load_uimage(const char *filename, target_ulong *ep, target_ulong *loadaddr,
464 uboot_image_header_t h;
465 uboot_image_header_t *hdr = &h;
466 uint8_t *data = NULL;
469 fd = open(filename, O_RDONLY | O_BINARY);
473 size = read(fd, hdr, sizeof(uboot_image_header_t));
477 bswap_uboot_header(hdr);
479 if (hdr->ih_magic != IH_MAGIC)
482 /* TODO: Implement other image types. */
483 if (hdr->ih_type != IH_TYPE_KERNEL) {
484 fprintf(stderr, "Can only load u-boot image type \"kernel\"\n");
488 switch (hdr->ih_comp) {
494 "Unable to load u-boot images with compression type %d\n",
499 /* TODO: Check CPU type. */
501 if (hdr->ih_os == IH_OS_LINUX)
508 data = qemu_malloc(hdr->ih_size);
512 if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
513 fprintf(stderr, "Error reading file\n");
517 if (hdr->ih_comp == IH_COMP_GZIP) {
518 uint8_t *compressed_data;
522 compressed_data = data;
523 max_bytes = UBOOT_MAX_GUNZIP_BYTES;
524 data = qemu_malloc(max_bytes);
526 bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
527 qemu_free(compressed_data);
529 fprintf(stderr, "Unable to decompress gzipped image!\n");
532 hdr->ih_size = bytes;
535 cpu_physical_memory_write_rom(hdr->ih_load, data, hdr->ih_size);
538 *loadaddr = hdr->ih_load;