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/>.
45 #include "qemu/osdep.h"
46 #include "qemu-common.h"
47 #include "qapi/error.h"
49 #include "disas/disas.h"
50 #include "migration/vmstate.h"
51 #include "monitor/monitor.h"
52 #include "sysemu/reset.h"
53 #include "sysemu/sysemu.h"
54 #include "uboot_image.h"
55 #include "hw/loader.h"
56 #include "hw/nvram/fw_cfg.h"
57 #include "exec/memory.h"
58 #include "exec/address-spaces.h"
59 #include "hw/boards.h"
60 #include "qemu/cutils.h"
61 #include "sysemu/runstate.h"
65 static int roms_loaded;
67 /* return the size or -1 if error */
68 int64_t get_image_size(const char *filename)
72 fd = open(filename, O_RDONLY | O_BINARY);
75 size = lseek(fd, 0, SEEK_END);
80 /* return the size or -1 if error */
81 ssize_t load_image_size(const char *filename, void *addr, size_t size)
84 ssize_t actsize, l = 0;
86 fd = open(filename, O_RDONLY | O_BINARY);
91 while ((actsize = read(fd, addr + l, size - l)) > 0) {
97 return actsize < 0 ? -1 : l;
100 /* read()-like version */
101 ssize_t read_targphys(const char *name,
102 int fd, hwaddr dst_addr, size_t nbytes)
107 buf = g_malloc(nbytes);
108 did = read(fd, buf, nbytes);
110 rom_add_blob_fixed("read", buf, did, dst_addr);
115 int load_image_targphys(const char *filename,
116 hwaddr addr, uint64_t max_sz)
118 return load_image_targphys_as(filename, addr, max_sz, NULL);
121 /* return the size or -1 if error */
122 int load_image_targphys_as(const char *filename,
123 hwaddr addr, uint64_t max_sz, AddressSpace *as)
127 size = get_image_size(filename);
128 if (size < 0 || size > max_sz) {
132 if (rom_add_file_fixed_as(filename, addr, -1, as) < 0) {
139 int load_image_mr(const char *filename, MemoryRegion *mr)
143 if (!memory_access_is_direct(mr, false)) {
144 /* Can only load an image into RAM or ROM */
148 size = get_image_size(filename);
150 if (size < 0 || size > memory_region_size(mr)) {
154 if (rom_add_file_mr(filename, mr, -1) < 0) {
161 void pstrcpy_targphys(const char *name, hwaddr dest, int buf_size,
167 if (buf_size <= 0) return;
168 nulp = memchr(source, 0, buf_size);
170 rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
172 rom_add_blob_fixed(name, source, buf_size, dest);
173 ptr = rom_ptr(dest + buf_size - 1, sizeof(*ptr));
182 uint32_t a_info; /* Use macros N_MAGIC, etc for access */
183 uint32_t a_text; /* length of text, in bytes */
184 uint32_t a_data; /* length of data, in bytes */
185 uint32_t a_bss; /* length of uninitialized data area, in bytes */
186 uint32_t a_syms; /* length of symbol table data in file, in bytes */
187 uint32_t a_entry; /* start address */
188 uint32_t a_trsize; /* length of relocation info for text, in bytes */
189 uint32_t a_drsize; /* length of relocation info for data, in bytes */
192 static void bswap_ahdr(struct exec *e)
194 bswap32s(&e->a_info);
195 bswap32s(&e->a_text);
196 bswap32s(&e->a_data);
198 bswap32s(&e->a_syms);
199 bswap32s(&e->a_entry);
200 bswap32s(&e->a_trsize);
201 bswap32s(&e->a_drsize);
204 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
209 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
210 #define N_TXTOFF(x) \
211 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
212 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
213 #define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
214 #define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
216 #define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
218 #define N_DATADDR(x, target_page_size) \
219 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
220 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
223 int load_aout(const char *filename, hwaddr addr, int max_sz,
224 int bswap_needed, hwaddr target_page_size)
231 fd = open(filename, O_RDONLY | O_BINARY);
235 size = read(fd, &e, sizeof(e));
248 if (e.a_text + e.a_data > max_sz)
250 lseek(fd, N_TXTOFF(e), SEEK_SET);
251 size = read_targphys(filename, fd, addr, e.a_text + e.a_data);
256 if (N_DATADDR(e, target_page_size) + e.a_data > max_sz)
258 lseek(fd, N_TXTOFF(e), SEEK_SET);
259 size = read_targphys(filename, fd, addr, e.a_text);
262 ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size),
280 static void *load_at(int fd, off_t offset, size_t size)
283 if (lseek(fd, offset, SEEK_SET) < 0)
285 ptr = g_malloc(size);
286 if (read(fd, ptr, size) != size) {
297 #define ELF_CLASS ELFCLASS32
301 #define elf_word uint32_t
302 #define elf_sword int32_t
303 #define bswapSZs bswap32s
304 #include "hw/elf_ops.h"
316 #define elfhdr elf64_hdr
317 #define elf_phdr elf64_phdr
318 #define elf_note elf64_note
319 #define elf_shdr elf64_shdr
320 #define elf_sym elf64_sym
321 #define elf_rela elf64_rela
322 #define elf_word uint64_t
323 #define elf_sword int64_t
324 #define bswapSZs bswap64s
326 #include "hw/elf_ops.h"
328 const char *load_elf_strerror(int error)
333 case ELF_LOAD_FAILED:
334 return "Failed to load ELF";
335 case ELF_LOAD_NOT_ELF:
336 return "The image is not ELF";
337 case ELF_LOAD_WRONG_ARCH:
338 return "The image is from incompatible architecture";
339 case ELF_LOAD_WRONG_ENDIAN:
340 return "The image has incorrect endianness";
342 return "Unknown error";
346 void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp)
349 uint8_t e_ident_local[EI_NIDENT];
351 size_t hdr_size, off;
359 fd = open(filename, O_RDONLY | O_BINARY);
361 error_setg_errno(errp, errno, "Failed to open file: %s", filename);
364 if (read(fd, hdr, EI_NIDENT) != EI_NIDENT) {
365 error_setg_errno(errp, errno, "Failed to read file: %s", filename);
368 if (e_ident[0] != ELFMAG0 ||
369 e_ident[1] != ELFMAG1 ||
370 e_ident[2] != ELFMAG2 ||
371 e_ident[3] != ELFMAG3) {
372 error_setg(errp, "Bad ELF magic");
376 is64l = e_ident[EI_CLASS] == ELFCLASS64;
377 hdr_size = is64l ? sizeof(Elf64_Ehdr) : sizeof(Elf32_Ehdr);
383 while (hdr != e_ident_local && off < hdr_size) {
384 size_t br = read(fd, hdr + off, hdr_size - off);
387 error_setg(errp, "File too short: %s", filename);
390 error_setg_errno(errp, errno, "Failed to read file: %s",
401 /* return < 0 if error, otherwise the number of bytes loaded in memory */
402 int load_elf(const char *filename,
403 uint64_t (*elf_note_fn)(void *, void *, bool),
404 uint64_t (*translate_fn)(void *, uint64_t),
405 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
406 uint64_t *highaddr, int big_endian, int elf_machine,
407 int clear_lsb, int data_swab)
409 return load_elf_as(filename, elf_note_fn, translate_fn, translate_opaque,
410 pentry, lowaddr, highaddr, big_endian, elf_machine,
411 clear_lsb, data_swab, NULL);
414 /* return < 0 if error, otherwise the number of bytes loaded in memory */
415 int load_elf_as(const char *filename,
416 uint64_t (*elf_note_fn)(void *, void *, bool),
417 uint64_t (*translate_fn)(void *, uint64_t),
418 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
419 uint64_t *highaddr, int big_endian, int elf_machine,
420 int clear_lsb, int data_swab, AddressSpace *as)
422 return load_elf_ram(filename, elf_note_fn, translate_fn, translate_opaque,
423 pentry, lowaddr, highaddr, big_endian, elf_machine,
424 clear_lsb, data_swab, as, true);
427 /* return < 0 if error, otherwise the number of bytes loaded in memory */
428 int load_elf_ram(const char *filename,
429 uint64_t (*elf_note_fn)(void *, void *, bool),
430 uint64_t (*translate_fn)(void *, uint64_t),
431 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
432 uint64_t *highaddr, int big_endian, int elf_machine,
433 int clear_lsb, int data_swab, AddressSpace *as,
436 return load_elf_ram_sym(filename, elf_note_fn,
437 translate_fn, translate_opaque,
438 pentry, lowaddr, highaddr, big_endian,
439 elf_machine, clear_lsb, data_swab, as,
443 /* return < 0 if error, otherwise the number of bytes loaded in memory */
444 int load_elf_ram_sym(const char *filename,
445 uint64_t (*elf_note_fn)(void *, void *, bool),
446 uint64_t (*translate_fn)(void *, uint64_t),
447 void *translate_opaque, uint64_t *pentry,
448 uint64_t *lowaddr, uint64_t *highaddr, int big_endian,
449 int elf_machine, int clear_lsb, int data_swab,
450 AddressSpace *as, bool load_rom, symbol_fn_t sym_cb)
452 int fd, data_order, target_data_order, must_swab, ret = ELF_LOAD_FAILED;
453 uint8_t e_ident[EI_NIDENT];
455 fd = open(filename, O_RDONLY | O_BINARY);
460 if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
462 if (e_ident[0] != ELFMAG0 ||
463 e_ident[1] != ELFMAG1 ||
464 e_ident[2] != ELFMAG2 ||
465 e_ident[3] != ELFMAG3) {
466 ret = ELF_LOAD_NOT_ELF;
469 #ifdef HOST_WORDS_BIGENDIAN
470 data_order = ELFDATA2MSB;
472 data_order = ELFDATA2LSB;
474 must_swab = data_order != e_ident[EI_DATA];
476 target_data_order = ELFDATA2MSB;
478 target_data_order = ELFDATA2LSB;
481 if (target_data_order != e_ident[EI_DATA]) {
482 ret = ELF_LOAD_WRONG_ENDIAN;
486 lseek(fd, 0, SEEK_SET);
487 if (e_ident[EI_CLASS] == ELFCLASS64) {
488 ret = load_elf64(filename, fd, elf_note_fn,
489 translate_fn, translate_opaque, must_swab,
490 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
491 data_swab, as, load_rom, sym_cb);
493 ret = load_elf32(filename, fd, elf_note_fn,
494 translate_fn, translate_opaque, must_swab,
495 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
496 data_swab, as, load_rom, sym_cb);
504 static void bswap_uboot_header(uboot_image_header_t *hdr)
506 #ifndef HOST_WORDS_BIGENDIAN
507 bswap32s(&hdr->ih_magic);
508 bswap32s(&hdr->ih_hcrc);
509 bswap32s(&hdr->ih_time);
510 bswap32s(&hdr->ih_size);
511 bswap32s(&hdr->ih_load);
512 bswap32s(&hdr->ih_ep);
513 bswap32s(&hdr->ih_dcrc);
518 #define ZALLOC_ALIGNMENT 16
520 static void *zalloc(void *x, unsigned items, unsigned size)
525 size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
532 static void zfree(void *x, void *addr)
539 #define EXTRA_FIELD 4
542 #define RESERVED 0xe0
546 ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen)
555 if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
556 puts ("Error: Bad gzipped data\n");
559 if ((flags & EXTRA_FIELD) != 0)
560 i = 12 + src[10] + (src[11] << 8);
561 if ((flags & ORIG_NAME) != 0)
562 while (src[i++] != 0)
564 if ((flags & COMMENT) != 0)
565 while (src[i++] != 0)
567 if ((flags & HEAD_CRC) != 0)
570 puts ("Error: gunzip out of data in header\n");
577 r = inflateInit2(&s, -MAX_WBITS);
579 printf ("Error: inflateInit2() returned %d\n", r);
583 s.avail_in = srclen - i;
585 s.avail_out = dstlen;
586 r = inflate(&s, Z_FINISH);
587 if (r != Z_OK && r != Z_STREAM_END) {
588 printf ("Error: inflate() returned %d\n", r);
591 dstbytes = s.next_out - (unsigned char *) dst;
597 /* Load a U-Boot image. */
598 static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
599 int *is_linux, uint8_t image_type,
600 uint64_t (*translate_fn)(void *, uint64_t),
601 void *translate_opaque, AddressSpace *as)
606 uboot_image_header_t h;
607 uboot_image_header_t *hdr = &h;
608 uint8_t *data = NULL;
610 int do_uncompress = 0;
612 fd = open(filename, O_RDONLY | O_BINARY);
616 size = read(fd, hdr, sizeof(uboot_image_header_t));
617 if (size < sizeof(uboot_image_header_t)) {
621 bswap_uboot_header(hdr);
623 if (hdr->ih_magic != IH_MAGIC)
626 if (hdr->ih_type != image_type) {
627 if (!(image_type == IH_TYPE_KERNEL &&
628 hdr->ih_type == IH_TYPE_KERNEL_NOLOAD)) {
629 fprintf(stderr, "Wrong image type %d, expected %d\n", hdr->ih_type,
635 /* TODO: Implement other image types. */
636 switch (hdr->ih_type) {
637 case IH_TYPE_KERNEL_NOLOAD:
638 if (!loadaddr || *loadaddr == LOAD_UIMAGE_LOADADDR_INVALID) {
639 fprintf(stderr, "this image format (kernel_noload) cannot be "
640 "loaded on this machine type");
644 hdr->ih_load = *loadaddr + sizeof(*hdr);
645 hdr->ih_ep += hdr->ih_load;
648 address = hdr->ih_load;
650 address = translate_fn(translate_opaque, address);
653 *loadaddr = hdr->ih_load;
656 switch (hdr->ih_comp) {
664 "Unable to load u-boot images with compression type %d\n",
673 /* TODO: Check CPU type. */
675 if (hdr->ih_os == IH_OS_LINUX) {
683 case IH_TYPE_RAMDISK:
687 fprintf(stderr, "Unsupported u-boot image type %d\n", hdr->ih_type);
691 data = g_malloc(hdr->ih_size);
693 if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
694 fprintf(stderr, "Error reading file\n");
699 uint8_t *compressed_data;
703 compressed_data = data;
704 max_bytes = UBOOT_MAX_GUNZIP_BYTES;
705 data = g_malloc(max_bytes);
707 bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
708 g_free(compressed_data);
710 fprintf(stderr, "Unable to decompress gzipped image!\n");
713 hdr->ih_size = bytes;
716 rom_add_blob_fixed_as(filename, data, hdr->ih_size, address, as);
726 int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr,
728 uint64_t (*translate_fn)(void *, uint64_t),
729 void *translate_opaque)
731 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
732 translate_fn, translate_opaque, NULL);
735 int load_uimage_as(const char *filename, hwaddr *ep, hwaddr *loadaddr,
737 uint64_t (*translate_fn)(void *, uint64_t),
738 void *translate_opaque, AddressSpace *as)
740 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
741 translate_fn, translate_opaque, as);
744 /* Load a ramdisk. */
745 int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz)
747 return load_ramdisk_as(filename, addr, max_sz, NULL);
750 int load_ramdisk_as(const char *filename, hwaddr addr, uint64_t max_sz,
753 return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK,
757 /* Load a gzip-compressed kernel to a dynamically allocated buffer. */
758 int load_image_gzipped_buffer(const char *filename, uint64_t max_sz,
761 uint8_t *compressed_data = NULL;
762 uint8_t *data = NULL;
767 if (!g_file_get_contents(filename, (char **) &compressed_data, &len,
772 /* Is it a gzip-compressed file? */
774 compressed_data[0] != 0x1f ||
775 compressed_data[1] != 0x8b) {
779 if (max_sz > LOAD_IMAGE_MAX_GUNZIP_BYTES) {
780 max_sz = LOAD_IMAGE_MAX_GUNZIP_BYTES;
783 data = g_malloc(max_sz);
784 bytes = gunzip(data, max_sz, compressed_data, len);
786 fprintf(stderr, "%s: unable to decompress gzipped kernel file\n",
791 /* trim to actual size and return to caller */
792 *buffer = g_realloc(data, bytes);
794 /* ownership has been transferred to caller */
798 g_free(compressed_data);
803 /* Load a gzip-compressed kernel. */
804 int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz)
809 bytes = load_image_gzipped_buffer(filename, max_sz, &data);
811 rom_add_blob_fixed(filename, data, bytes, addr);
818 * Functions for reboot-persistent memory regions.
819 * - used for vga bios and option roms.
820 * - also linux kernel (-kernel / -initrd).
823 typedef struct Rom Rom;
829 /* datasize is the amount of memory allocated in "data". If datasize is less
830 * than romsize, it means that the area from datasize to romsize is filled
842 GMappedFile *mapped_file;
847 QTAILQ_ENTRY(Rom) next;
850 static FWCfgState *fw_cfg;
851 static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
854 * rom->data can be heap-allocated or memory-mapped (e.g. when added with
855 * rom_add_elf_program())
857 static void rom_free_data(Rom *rom)
859 if (rom->mapped_file) {
860 g_mapped_file_unref(rom->mapped_file);
861 rom->mapped_file = NULL;
869 static void rom_free(Rom *rom)
875 g_free(rom->fw_file);
879 static inline bool rom_order_compare(Rom *rom, Rom *item)
881 return ((uintptr_t)(void *)rom->as > (uintptr_t)(void *)item->as) ||
882 (rom->as == item->as && rom->addr >= item->addr);
885 static void rom_insert(Rom *rom)
890 hw_error ("ROM images must be loaded at startup\n");
893 /* The user didn't specify an address space, this is the default */
895 rom->as = &address_space_memory;
898 rom->committed = false;
900 /* List is ordered by load address in the same address space */
901 QTAILQ_FOREACH(item, &roms, next) {
902 if (rom_order_compare(rom, item)) {
905 QTAILQ_INSERT_BEFORE(item, rom, next);
908 QTAILQ_INSERT_TAIL(&roms, rom, next);
911 static void fw_cfg_resized(const char *id, uint64_t length, void *host)
914 fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length);
918 static void *rom_set_mr(Rom *rom, Object *owner, const char *name, bool ro)
922 rom->mr = g_malloc(sizeof(*rom->mr));
923 memory_region_init_resizeable_ram(rom->mr, owner, name,
924 rom->datasize, rom->romsize,
927 memory_region_set_readonly(rom->mr, ro);
928 vmstate_register_ram_global(rom->mr);
930 data = memory_region_get_ram_ptr(rom->mr);
931 memcpy(data, rom->data, rom->datasize);
936 int rom_add_file(const char *file, const char *fw_dir,
937 hwaddr addr, int32_t bootindex,
938 bool option_rom, MemoryRegion *mr,
941 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
947 fprintf(stderr, "Specifying an Address Space and Memory Region is " \
948 "not valid when loading a rom\n");
949 /* We haven't allocated anything so we don't need any cleanup */
953 rom = g_malloc0(sizeof(*rom));
954 rom->name = g_strdup(file);
955 rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
957 if (rom->path == NULL) {
958 rom->path = g_strdup(file);
961 fd = open(rom->path, O_RDONLY | O_BINARY);
963 fprintf(stderr, "Could not open option rom '%s': %s\n",
964 rom->path, strerror(errno));
969 rom->fw_dir = g_strdup(fw_dir);
970 rom->fw_file = g_strdup(file);
973 rom->romsize = lseek(fd, 0, SEEK_END);
974 if (rom->romsize == -1) {
975 fprintf(stderr, "rom: file %-20s: get size error: %s\n",
976 rom->name, strerror(errno));
980 rom->datasize = rom->romsize;
981 rom->data = g_malloc0(rom->datasize);
982 lseek(fd, 0, SEEK_SET);
983 rc = read(fd, rom->data, rom->datasize);
984 if (rc != rom->datasize) {
985 fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
986 rom->name, rc, rom->datasize);
991 if (rom->fw_file && fw_cfg) {
992 const char *basename;
993 char fw_file_name[FW_CFG_MAX_FILE_PATH];
996 basename = strrchr(rom->fw_file, '/');
1000 basename = rom->fw_file;
1002 snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir,
1004 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
1006 if ((!option_rom || mc->option_rom_has_mr) && mc->rom_file_has_mr) {
1007 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, true);
1012 fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize);
1016 snprintf(devpath, sizeof(devpath), "/rom@%s", file);
1018 snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr);
1022 add_boot_device_path(bootindex, NULL, devpath);
1033 MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
1034 size_t max_len, hwaddr addr, const char *fw_file_name,
1035 FWCfgCallback fw_callback, void *callback_opaque,
1036 AddressSpace *as, bool read_only)
1038 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
1040 MemoryRegion *mr = NULL;
1042 rom = g_malloc0(sizeof(*rom));
1043 rom->name = g_strdup(name);
1046 rom->romsize = max_len ? max_len : len;
1047 rom->datasize = len;
1048 g_assert(rom->romsize >= rom->datasize);
1049 rom->data = g_malloc0(rom->datasize);
1050 memcpy(rom->data, blob, len);
1052 if (fw_file_name && fw_cfg) {
1057 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
1059 snprintf(devpath, sizeof(devpath), "/ram@%s", fw_file_name);
1062 if (mc->rom_file_has_mr) {
1063 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, read_only);
1069 fw_cfg_add_file_callback(fw_cfg, fw_file_name,
1070 fw_callback, NULL, callback_opaque,
1071 data, rom->datasize, read_only);
1076 /* This function is specific for elf program because we don't need to allocate
1077 * all the rom. We just allocate the first part and the rest is just zeros. This
1078 * is why romsize and datasize are different. Also, this function takes its own
1079 * reference to "mapped_file", so we don't have to allocate and copy the buffer.
1081 int rom_add_elf_program(const char *name, GMappedFile *mapped_file, void *data,
1082 size_t datasize, size_t romsize, hwaddr addr,
1087 rom = g_malloc0(sizeof(*rom));
1088 rom->name = g_strdup(name);
1090 rom->datasize = datasize;
1091 rom->romsize = romsize;
1095 if (mapped_file && data) {
1096 g_mapped_file_ref(mapped_file);
1097 rom->mapped_file = mapped_file;
1104 int rom_add_vga(const char *file)
1106 return rom_add_file(file, "vgaroms", 0, -1, true, NULL, NULL);
1109 int rom_add_option(const char *file, int32_t bootindex)
1111 return rom_add_file(file, "genroms", 0, bootindex, true, NULL, NULL);
1114 static void rom_reset(void *unused)
1119 * We don't need to fill in the RAM with ROM data because we'll fill
1120 * the data in during the next incoming migration in all cases. Note
1121 * that some of those RAMs can actually be modified by the guest on ARM
1122 * so this is probably the only right thing to do here.
1124 if (runstate_check(RUN_STATE_INMIGRATE))
1127 QTAILQ_FOREACH(rom, &roms, next) {
1131 if (rom->data == NULL) {
1135 void *host = memory_region_get_ram_ptr(rom->mr);
1136 memcpy(host, rom->data, rom->datasize);
1138 address_space_write_rom(rom->as, rom->addr, MEMTXATTRS_UNSPECIFIED,
1139 rom->data, rom->datasize);
1142 /* rom needs to be written only once */
1146 * The rom loader is really on the same level as firmware in the guest
1147 * shadowing a ROM into RAM. Such a shadowing mechanism needs to ensure
1148 * that the instruction cache for that new region is clear, so that the
1149 * CPU definitely fetches its instructions from the just written data.
1151 cpu_flush_icache_range(rom->addr, rom->datasize);
1155 int rom_check_and_register_reset(void)
1158 MemoryRegionSection section;
1160 AddressSpace *as = NULL;
1162 QTAILQ_FOREACH(rom, &roms, next) {
1167 if ((addr > rom->addr) && (as == rom->as)) {
1168 fprintf(stderr, "rom: requested regions overlap "
1169 "(rom %s. free=0x" TARGET_FMT_plx
1170 ", addr=0x" TARGET_FMT_plx ")\n",
1171 rom->name, addr, rom->addr);
1175 addr += rom->romsize;
1178 section = memory_region_find(rom->mr ? rom->mr : get_system_memory(),
1180 rom->isrom = int128_nz(section.size) && memory_region_is_rom(section.mr);
1181 memory_region_unref(section.mr);
1183 qemu_register_reset(rom_reset, NULL);
1188 void rom_set_fw(FWCfgState *f)
1193 void rom_set_order_override(int order)
1197 fw_cfg_set_order_override(fw_cfg, order);
1200 void rom_reset_order_override(void)
1204 fw_cfg_reset_order_override(fw_cfg);
1207 void rom_transaction_begin(void)
1211 /* Ignore ROMs added without the transaction API */
1212 QTAILQ_FOREACH(rom, &roms, next) {
1213 rom->committed = true;
1217 void rom_transaction_end(bool commit)
1222 QTAILQ_FOREACH_SAFE(rom, &roms, next, tmp) {
1223 if (rom->committed) {
1227 rom->committed = true;
1229 QTAILQ_REMOVE(&roms, rom, next);
1235 static Rom *find_rom(hwaddr addr, size_t size)
1239 QTAILQ_FOREACH(rom, &roms, next) {
1246 if (rom->addr > addr) {
1249 if (rom->addr + rom->romsize < addr + size) {
1258 * Copies memory from registered ROMs to dest. Any memory that is contained in
1259 * a ROM between addr and addr + size is copied. Note that this can involve
1260 * multiple ROMs, which need not start at addr and need not end at addr + size.
1262 int rom_copy(uint8_t *dest, hwaddr addr, size_t size)
1264 hwaddr end = addr + size;
1265 uint8_t *s, *d = dest;
1269 QTAILQ_FOREACH(rom, &roms, next) {
1276 if (rom->addr + rom->romsize < addr) {
1279 if (rom->addr > end) {
1283 d = dest + (rom->addr - addr);
1287 if ((d + l) > (dest + size)) {
1295 if (rom->romsize > rom->datasize) {
1296 /* If datasize is less than romsize, it means that we didn't
1297 * allocate all the ROM because the trailing data are only zeros.
1301 l = rom->romsize - rom->datasize;
1303 if ((d + l) > (dest + size)) {
1304 /* Rom size doesn't fit in the destination area. Adjust to avoid
1316 return (d + l) - dest;
1319 void *rom_ptr(hwaddr addr, size_t size)
1323 rom = find_rom(addr, size);
1324 if (!rom || !rom->data)
1326 return rom->data + (addr - rom->addr);
1329 void hmp_info_roms(Monitor *mon, const QDict *qdict)
1333 QTAILQ_FOREACH(rom, &roms, next) {
1335 monitor_printf(mon, "%s"
1336 " size=0x%06zx name=\"%s\"\n",
1337 memory_region_name(rom->mr),
1340 } else if (!rom->fw_file) {
1341 monitor_printf(mon, "addr=" TARGET_FMT_plx
1342 " size=0x%06zx mem=%s name=\"%s\"\n",
1343 rom->addr, rom->romsize,
1344 rom->isrom ? "rom" : "ram",
1347 monitor_printf(mon, "fw=%s/%s"
1348 " size=0x%06zx name=\"%s\"\n",
1357 typedef enum HexRecord HexRecord;
1361 EXT_SEG_ADDR_RECORD,
1362 START_SEG_ADDR_RECORD,
1363 EXT_LINEAR_ADDR_RECORD,
1364 START_LINEAR_ADDR_RECORD,
1367 /* Each record contains a 16-bit address which is combined with the upper 16
1368 * bits of the implicit "next address" to form a 32-bit address.
1370 #define NEXT_ADDR_MASK 0xffff0000
1372 #define DATA_FIELD_MAX_LEN 0xff
1373 #define LEN_EXCEPT_DATA 0x5
1374 /* 0x5 = sizeof(byte_count) + sizeof(address) + sizeof(record_type) +
1375 * sizeof(checksum) */
1379 uint8_t record_type;
1380 uint8_t data[DATA_FIELD_MAX_LEN];
1384 /* return 0 or -1 if error */
1385 static bool parse_record(HexLine *line, uint8_t *our_checksum, const uint8_t c,
1386 uint32_t *index, const bool in_process)
1388 /* +-------+---------------+-------+---------------------+--------+
1389 * | byte | |record | | |
1390 * | count | address | type | data |checksum|
1391 * +-------+---------------+-------+---------------------+--------+
1393 * |1 byte | 2 bytes |1 byte | 0-255 bytes | 1 byte |
1396 uint32_t idx = *index;
1398 if (g_ascii_isspace(c)) {
1401 if (!g_ascii_isxdigit(c) || !in_process) {
1404 value = g_ascii_xdigit_value(c);
1405 value = (idx & 0x1) ? (value & 0xf) : (value << 4);
1407 line->byte_count |= value;
1408 } else if (2 <= idx && idx < 6) {
1409 line->address <<= 4;
1410 line->address += g_ascii_xdigit_value(c);
1411 } else if (6 <= idx && idx < 8) {
1412 line->record_type |= value;
1413 } else if (8 <= idx && idx < 8 + 2 * line->byte_count) {
1414 line->data[(idx - 8) >> 1] |= value;
1415 } else if (8 + 2 * line->byte_count <= idx &&
1416 idx < 10 + 2 * line->byte_count) {
1417 line->checksum |= value;
1421 *our_checksum += value;
1427 const char *filename;
1432 uint32_t next_address_to_write;
1433 uint32_t current_address;
1434 uint32_t current_rom_index;
1435 uint32_t rom_start_address;
1439 /* return size or -1 if error */
1440 static int handle_record_type(HexParser *parser)
1442 HexLine *line = &(parser->line);
1443 switch (line->record_type) {
1445 parser->current_address =
1446 (parser->next_address_to_write & NEXT_ADDR_MASK) | line->address;
1447 /* verify this is a contiguous block of memory */
1448 if (parser->current_address != parser->next_address_to_write) {
1449 if (parser->current_rom_index != 0) {
1450 rom_add_blob_fixed_as(parser->filename, parser->bin_buf,
1451 parser->current_rom_index,
1452 parser->rom_start_address, parser->as);
1454 parser->rom_start_address = parser->current_address;
1455 parser->current_rom_index = 0;
1458 /* copy from line buffer to output bin_buf */
1459 memcpy(parser->bin_buf + parser->current_rom_index, line->data,
1461 parser->current_rom_index += line->byte_count;
1462 parser->total_size += line->byte_count;
1463 /* save next address to write */
1464 parser->next_address_to_write =
1465 parser->current_address + line->byte_count;
1469 if (parser->current_rom_index != 0) {
1470 rom_add_blob_fixed_as(parser->filename, parser->bin_buf,
1471 parser->current_rom_index,
1472 parser->rom_start_address, parser->as);
1474 return parser->total_size;
1475 case EXT_SEG_ADDR_RECORD:
1476 case EXT_LINEAR_ADDR_RECORD:
1477 if (line->byte_count != 2 && line->address != 0) {
1481 if (parser->current_rom_index != 0) {
1482 rom_add_blob_fixed_as(parser->filename, parser->bin_buf,
1483 parser->current_rom_index,
1484 parser->rom_start_address, parser->as);
1487 /* save next address to write,
1488 * in case of non-contiguous block of memory */
1489 parser->next_address_to_write = (line->data[0] << 12) |
1490 (line->data[1] << 4);
1491 if (line->record_type == EXT_LINEAR_ADDR_RECORD) {
1492 parser->next_address_to_write <<= 12;
1495 parser->rom_start_address = parser->next_address_to_write;
1496 parser->current_rom_index = 0;
1499 case START_SEG_ADDR_RECORD:
1500 if (line->byte_count != 4 && line->address != 0) {
1504 /* x86 16-bit CS:IP segmented addressing */
1505 *(parser->start_addr) = (((line->data[0] << 8) | line->data[1]) << 4) +
1506 ((line->data[2] << 8) | line->data[3]);
1509 case START_LINEAR_ADDR_RECORD:
1510 if (line->byte_count != 4 && line->address != 0) {
1514 *(parser->start_addr) = ldl_be_p(line->data);
1521 return parser->total_size;
1524 /* return size or -1 if error */
1525 static int parse_hex_blob(const char *filename, hwaddr *addr, uint8_t *hex_blob,
1526 size_t hex_blob_size, AddressSpace *as)
1528 bool in_process = false; /* avoid re-enter and
1529 * check whether record begin with ':' */
1530 uint8_t *end = hex_blob + hex_blob_size;
1531 uint8_t our_checksum = 0;
1532 uint32_t record_index = 0;
1533 HexParser parser = {
1534 .filename = filename,
1535 .bin_buf = g_malloc(hex_blob_size),
1540 rom_transaction_begin();
1542 for (; hex_blob < end; ++hex_blob) {
1543 switch (*hex_blob) {
1551 if ((LEN_EXCEPT_DATA + parser.line.byte_count) * 2 !=
1553 our_checksum != 0) {
1554 parser.total_size = -1;
1558 if (handle_record_type(&parser) == -1) {
1559 parser.total_size = -1;
1564 /* start of a new record. */
1566 memset(&parser.line, 0, sizeof(HexLine));
1571 /* decoding lines */
1573 if (!parse_record(&parser.line, &our_checksum, *hex_blob,
1574 &record_index, in_process)) {
1575 parser.total_size = -1;
1583 g_free(parser.bin_buf);
1584 rom_transaction_end(parser.total_size != -1);
1585 return parser.total_size;
1588 /* return size or -1 if error */
1589 int load_targphys_hex_as(const char *filename, hwaddr *entry, AddressSpace *as)
1591 gsize hex_blob_size;
1595 if (!g_file_get_contents(filename, &hex_blob, &hex_blob_size, NULL)) {
1599 total_size = parse_hex_blob(filename, entry, (uint8_t *)hex_blob,