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
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 along
42 * with this program; if not, see <http://www.gnu.org/licenses/>.
49 #include "uboot_image.h"
55 static int roms_loaded;
57 /* return the size or -1 if error */
58 int get_image_size(const char *filename)
61 fd = open(filename, O_RDONLY | O_BINARY);
64 size = lseek(fd, 0, SEEK_END);
69 /* return the size or -1 if error */
70 /* deprecated, because caller does not specify buffer size! */
71 int load_image(const char *filename, uint8_t *addr)
74 fd = open(filename, O_RDONLY | O_BINARY);
77 size = lseek(fd, 0, SEEK_END);
78 lseek(fd, 0, SEEK_SET);
79 if (read(fd, addr, size) != size) {
87 /* read()-like version */
88 int read_targphys(const char *name,
89 int fd, target_phys_addr_t dst_addr, size_t nbytes)
94 buf = qemu_malloc(nbytes);
95 did = read(fd, buf, nbytes);
97 rom_add_blob_fixed("read", buf, did, dst_addr);
102 /* return the size or -1 if error */
103 int load_image_targphys(const char *filename,
104 target_phys_addr_t addr, int max_sz)
108 size = get_image_size(filename);
110 rom_add_file_fixed(filename, addr);
114 void pstrcpy_targphys(const char *name, target_phys_addr_t dest, int buf_size,
120 if (buf_size <= 0) return;
121 nulp = memchr(source, 0, buf_size);
123 rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
125 rom_add_blob_fixed(name, source, buf_size, dest);
126 ptr = rom_ptr(dest + buf_size - 1);
135 uint32_t a_info; /* Use macros N_MAGIC, etc for access */
136 uint32_t a_text; /* length of text, in bytes */
137 uint32_t a_data; /* length of data, in bytes */
138 uint32_t a_bss; /* length of uninitialized data area, in bytes */
139 uint32_t a_syms; /* length of symbol table data in file, in bytes */
140 uint32_t a_entry; /* start address */
141 uint32_t a_trsize; /* length of relocation info for text, in bytes */
142 uint32_t a_drsize; /* length of relocation info for data, in bytes */
145 static void bswap_ahdr(struct exec *e)
147 bswap32s(&e->a_info);
148 bswap32s(&e->a_text);
149 bswap32s(&e->a_data);
151 bswap32s(&e->a_syms);
152 bswap32s(&e->a_entry);
153 bswap32s(&e->a_trsize);
154 bswap32s(&e->a_drsize);
157 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
162 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
163 #define N_TXTOFF(x) \
164 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
165 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
166 #define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
167 #define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
169 #define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
171 #define N_DATADDR(x, target_page_size) \
172 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
173 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
176 int load_aout(const char *filename, target_phys_addr_t addr, int max_sz,
177 int bswap_needed, target_phys_addr_t target_page_size)
183 fd = open(filename, O_RDONLY | O_BINARY);
187 size = read(fd, &e, sizeof(e));
200 if (e.a_text + e.a_data > max_sz)
202 lseek(fd, N_TXTOFF(e), SEEK_SET);
203 size = read_targphys(filename, fd, addr, e.a_text + e.a_data);
208 if (N_DATADDR(e, target_page_size) + e.a_data > max_sz)
210 lseek(fd, N_TXTOFF(e), SEEK_SET);
211 size = read_targphys(filename, fd, addr, e.a_text);
214 ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size),
232 static void *load_at(int fd, int offset, int size)
235 if (lseek(fd, offset, SEEK_SET) < 0)
237 ptr = qemu_malloc(size);
238 if (read(fd, ptr, size) != size) {
249 #define ELF_CLASS ELFCLASS32
253 #define elf_word uint32_t
254 #define elf_sword int32_t
255 #define bswapSZs bswap32s
267 #define elfhdr elf64_hdr
268 #define elf_phdr elf64_phdr
269 #define elf_note elf64_note
270 #define elf_shdr elf64_shdr
271 #define elf_sym elf64_sym
272 #define elf_word uint64_t
273 #define elf_sword int64_t
274 #define bswapSZs bswap64s
278 /* return < 0 if error, otherwise the number of bytes loaded in memory */
279 int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
280 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
281 uint64_t *highaddr, int big_endian, int elf_machine, int clear_lsb)
283 int fd, data_order, target_data_order, must_swab, ret;
284 uint8_t e_ident[EI_NIDENT];
286 fd = open(filename, O_RDONLY | O_BINARY);
291 if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
293 if (e_ident[0] != ELFMAG0 ||
294 e_ident[1] != ELFMAG1 ||
295 e_ident[2] != ELFMAG2 ||
296 e_ident[3] != ELFMAG3)
298 #ifdef HOST_WORDS_BIGENDIAN
299 data_order = ELFDATA2MSB;
301 data_order = ELFDATA2LSB;
303 must_swab = data_order != e_ident[EI_DATA];
305 target_data_order = ELFDATA2MSB;
307 target_data_order = ELFDATA2LSB;
310 if (target_data_order != e_ident[EI_DATA])
313 lseek(fd, 0, SEEK_SET);
314 if (e_ident[EI_CLASS] == ELFCLASS64) {
315 ret = load_elf64(filename, fd, translate_fn, translate_opaque, must_swab,
316 pentry, lowaddr, highaddr, elf_machine, clear_lsb);
318 ret = load_elf32(filename, fd, translate_fn, translate_opaque, must_swab,
319 pentry, lowaddr, highaddr, elf_machine, clear_lsb);
330 static void bswap_uboot_header(uboot_image_header_t *hdr)
332 #ifndef HOST_WORDS_BIGENDIAN
333 bswap32s(&hdr->ih_magic);
334 bswap32s(&hdr->ih_hcrc);
335 bswap32s(&hdr->ih_time);
336 bswap32s(&hdr->ih_size);
337 bswap32s(&hdr->ih_load);
338 bswap32s(&hdr->ih_ep);
339 bswap32s(&hdr->ih_dcrc);
344 #define ZALLOC_ALIGNMENT 16
346 static void *zalloc(void *x, unsigned items, unsigned size)
351 size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
353 p = qemu_malloc(size);
358 static void zfree(void *x, void *addr)
365 #define EXTRA_FIELD 4
368 #define RESERVED 0xe0
372 /* This is the maximum in uboot, so if a uImage overflows this, it would
373 * overflow on real hardware too. */
374 #define UBOOT_MAX_GUNZIP_BYTES 0x800000
376 static ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src,
386 if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
387 puts ("Error: Bad gzipped data\n");
390 if ((flags & EXTRA_FIELD) != 0)
391 i = 12 + src[10] + (src[11] << 8);
392 if ((flags & ORIG_NAME) != 0)
393 while (src[i++] != 0)
395 if ((flags & COMMENT) != 0)
396 while (src[i++] != 0)
398 if ((flags & HEAD_CRC) != 0)
401 puts ("Error: gunzip out of data in header\n");
408 r = inflateInit2(&s, -MAX_WBITS);
410 printf ("Error: inflateInit2() returned %d\n", r);
414 s.avail_in = srclen - i;
416 s.avail_out = dstlen;
417 r = inflate(&s, Z_FINISH);
418 if (r != Z_OK && r != Z_STREAM_END) {
419 printf ("Error: inflate() returned %d\n", r);
422 dstbytes = s.next_out - (unsigned char *) dst;
428 /* Load a U-Boot image. */
429 int load_uimage(const char *filename, target_phys_addr_t *ep,
430 target_phys_addr_t *loadaddr, int *is_linux)
434 uboot_image_header_t h;
435 uboot_image_header_t *hdr = &h;
436 uint8_t *data = NULL;
439 fd = open(filename, O_RDONLY | O_BINARY);
443 size = read(fd, hdr, sizeof(uboot_image_header_t));
447 bswap_uboot_header(hdr);
449 if (hdr->ih_magic != IH_MAGIC)
452 /* TODO: Implement other image types. */
453 if (hdr->ih_type != IH_TYPE_KERNEL) {
454 fprintf(stderr, "Can only load u-boot image type \"kernel\"\n");
458 switch (hdr->ih_comp) {
464 "Unable to load u-boot images with compression type %d\n",
469 /* TODO: Check CPU type. */
471 if (hdr->ih_os == IH_OS_LINUX)
478 data = qemu_malloc(hdr->ih_size);
480 if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
481 fprintf(stderr, "Error reading file\n");
485 if (hdr->ih_comp == IH_COMP_GZIP) {
486 uint8_t *compressed_data;
490 compressed_data = data;
491 max_bytes = UBOOT_MAX_GUNZIP_BYTES;
492 data = qemu_malloc(max_bytes);
494 bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
495 qemu_free(compressed_data);
497 fprintf(stderr, "Unable to decompress gzipped image!\n");
500 hdr->ih_size = bytes;
503 rom_add_blob_fixed(filename, data, hdr->ih_size, hdr->ih_load);
506 *loadaddr = hdr->ih_load;
518 * Functions for reboot-persistent memory regions.
519 * - used for vga bios and option roms.
520 * - also linux kernel (-kernel / -initrd).
523 typedef struct Rom Rom;
534 target_phys_addr_t addr;
535 QTAILQ_ENTRY(Rom) next;
538 static FWCfgState *fw_cfg;
539 static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
541 static void rom_insert(Rom *rom)
546 hw_error ("ROM images must be loaded at startup\n");
549 /* list is ordered by load address */
550 QTAILQ_FOREACH(item, &roms, next) {
551 if (rom->addr >= item->addr)
553 QTAILQ_INSERT_BEFORE(item, rom, next);
556 QTAILQ_INSERT_TAIL(&roms, rom, next);
559 int rom_add_file(const char *file, const char *fw_dir,
560 target_phys_addr_t addr)
565 rom = qemu_mallocz(sizeof(*rom));
566 rom->name = qemu_strdup(file);
567 rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
568 if (rom->path == NULL) {
569 rom->path = qemu_strdup(file);
572 fd = open(rom->path, O_RDONLY | O_BINARY);
574 fprintf(stderr, "Could not open option rom '%s': %s\n",
575 rom->path, strerror(errno));
580 rom->fw_dir = qemu_strdup(fw_dir);
581 rom->fw_file = qemu_strdup(file);
584 rom->romsize = lseek(fd, 0, SEEK_END);
585 rom->data = qemu_mallocz(rom->romsize);
586 lseek(fd, 0, SEEK_SET);
587 rc = read(fd, rom->data, rom->romsize);
588 if (rc != rom->romsize) {
589 fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
590 rom->name, rc, rom->romsize);
595 if (rom->fw_file && fw_cfg)
596 fw_cfg_add_file(fw_cfg, rom->fw_dir, rom->fw_file, rom->data, rom->romsize);
602 qemu_free(rom->data);
603 qemu_free(rom->path);
604 qemu_free(rom->name);
609 int rom_add_blob(const char *name, const void *blob, size_t len,
610 target_phys_addr_t addr)
614 rom = qemu_mallocz(sizeof(*rom));
615 rom->name = qemu_strdup(name);
618 rom->data = qemu_mallocz(rom->romsize);
619 memcpy(rom->data, blob, len);
624 int rom_add_vga(const char *file)
626 return rom_add_file(file, "vgaroms", 0);
629 int rom_add_option(const char *file)
631 return rom_add_file(file, "genroms", 0);
634 static void rom_reset(void *unused)
638 QTAILQ_FOREACH(rom, &roms, next) {
642 if (rom->data == NULL) {
645 cpu_physical_memory_write_rom(rom->addr, rom->data, rom->romsize);
647 /* rom needs to be written only once */
648 qemu_free(rom->data);
654 int rom_load_all(void)
656 target_phys_addr_t addr = 0;
660 QTAILQ_FOREACH(rom, &roms, next) {
664 if (addr > rom->addr) {
665 fprintf(stderr, "rom: requested regions overlap "
666 "(rom %s. free=0x" TARGET_FMT_plx
667 ", addr=0x" TARGET_FMT_plx ")\n",
668 rom->name, addr, rom->addr);
672 addr += rom->romsize;
673 memtype = cpu_get_physical_page_desc(rom->addr) & (3 << IO_MEM_SHIFT);
674 if (memtype == IO_MEM_ROM)
677 qemu_register_reset(rom_reset, NULL);
682 void rom_set_fw(void *f)
687 static Rom *find_rom(target_phys_addr_t addr)
691 QTAILQ_FOREACH(rom, &roms, next) {
695 if (rom->addr > addr) {
698 if (rom->addr + rom->romsize < addr) {
707 * Copies memory from registered ROMs to dest. Any memory that is contained in
708 * a ROM between addr and addr + size is copied. Note that this can involve
709 * multiple ROMs, which need not start at addr and need not end at addr + size.
711 int rom_copy(uint8_t *dest, target_phys_addr_t addr, size_t size)
713 target_phys_addr_t end = addr + size;
714 uint8_t *s, *d = dest;
718 QTAILQ_FOREACH(rom, &roms, next) {
722 if (rom->addr + rom->romsize < addr) {
725 if (rom->addr > end) {
732 d = dest + (rom->addr - addr);
736 if ((d + l) > (dest + size)) {
743 return (d + l) - dest;
746 void *rom_ptr(target_phys_addr_t addr)
750 rom = find_rom(addr);
751 if (!rom || !rom->data)
753 return rom->data + (addr - rom->addr);
756 void do_info_roms(Monitor *mon)
760 QTAILQ_FOREACH(rom, &roms, next) {
762 monitor_printf(mon, "addr=" TARGET_FMT_plx
763 " size=0x%06zx mem=%s name=\"%s\" \n",
764 rom->addr, rom->romsize,
765 rom->isrom ? "rom" : "ram",
768 monitor_printf(mon, "fw=%s/%s"
769 " size=0x%06zx name=\"%s\" \n",