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 "qapi/error.h"
48 #include "disas/disas.h"
49 #include "monitor/monitor.h"
50 #include "sysemu/sysemu.h"
51 #include "uboot_image.h"
52 #include "hw/loader.h"
53 #include "hw/nvram/fw_cfg.h"
54 #include "exec/memory.h"
55 #include "exec/address-spaces.h"
56 #include "hw/boards.h"
57 #include "qemu/cutils.h"
61 static int roms_loaded;
63 /* return the size or -1 if error */
64 int64_t get_image_size(const char *filename)
68 fd = open(filename, O_RDONLY | O_BINARY);
71 size = lseek(fd, 0, SEEK_END);
76 /* return the size or -1 if error */
77 ssize_t load_image_size(const char *filename, void *addr, size_t size)
80 ssize_t actsize, l = 0;
82 fd = open(filename, O_RDONLY | O_BINARY);
87 while ((actsize = read(fd, addr + l, size - l)) > 0) {
93 return actsize < 0 ? -1 : l;
96 /* read()-like version */
97 ssize_t read_targphys(const char *name,
98 int fd, hwaddr dst_addr, size_t nbytes)
103 buf = g_malloc(nbytes);
104 did = read(fd, buf, nbytes);
106 rom_add_blob_fixed("read", buf, did, dst_addr);
111 int load_image_targphys(const char *filename,
112 hwaddr addr, uint64_t max_sz)
114 return load_image_targphys_as(filename, addr, max_sz, NULL);
117 /* return the size or -1 if error */
118 int load_image_targphys_as(const char *filename,
119 hwaddr addr, uint64_t max_sz, AddressSpace *as)
123 size = get_image_size(filename);
124 if (size < 0 || size > max_sz) {
128 if (rom_add_file_fixed_as(filename, addr, -1, as) < 0) {
135 int load_image_mr(const char *filename, MemoryRegion *mr)
139 if (!memory_access_is_direct(mr, false)) {
140 /* Can only load an image into RAM or ROM */
144 size = get_image_size(filename);
146 if (size < 0 || size > memory_region_size(mr)) {
150 if (rom_add_file_mr(filename, mr, -1) < 0) {
157 void pstrcpy_targphys(const char *name, hwaddr dest, int buf_size,
163 if (buf_size <= 0) return;
164 nulp = memchr(source, 0, buf_size);
166 rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
168 rom_add_blob_fixed(name, source, buf_size, dest);
169 ptr = rom_ptr(dest + buf_size - 1, sizeof(*ptr));
178 uint32_t a_info; /* Use macros N_MAGIC, etc for access */
179 uint32_t a_text; /* length of text, in bytes */
180 uint32_t a_data; /* length of data, in bytes */
181 uint32_t a_bss; /* length of uninitialized data area, in bytes */
182 uint32_t a_syms; /* length of symbol table data in file, in bytes */
183 uint32_t a_entry; /* start address */
184 uint32_t a_trsize; /* length of relocation info for text, in bytes */
185 uint32_t a_drsize; /* length of relocation info for data, in bytes */
188 static void bswap_ahdr(struct exec *e)
190 bswap32s(&e->a_info);
191 bswap32s(&e->a_text);
192 bswap32s(&e->a_data);
194 bswap32s(&e->a_syms);
195 bswap32s(&e->a_entry);
196 bswap32s(&e->a_trsize);
197 bswap32s(&e->a_drsize);
200 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
205 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
206 #define N_TXTOFF(x) \
207 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
208 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
209 #define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
210 #define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
212 #define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
214 #define N_DATADDR(x, target_page_size) \
215 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
216 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
219 int load_aout(const char *filename, hwaddr addr, int max_sz,
220 int bswap_needed, hwaddr target_page_size)
227 fd = open(filename, O_RDONLY | O_BINARY);
231 size = read(fd, &e, sizeof(e));
244 if (e.a_text + e.a_data > max_sz)
246 lseek(fd, N_TXTOFF(e), SEEK_SET);
247 size = read_targphys(filename, fd, addr, e.a_text + e.a_data);
252 if (N_DATADDR(e, target_page_size) + e.a_data > max_sz)
254 lseek(fd, N_TXTOFF(e), SEEK_SET);
255 size = read_targphys(filename, fd, addr, e.a_text);
258 ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size),
276 static void *load_at(int fd, off_t offset, size_t size)
279 if (lseek(fd, offset, SEEK_SET) < 0)
281 ptr = g_malloc(size);
282 if (read(fd, ptr, size) != size) {
293 #define ELF_CLASS ELFCLASS32
297 #define elf_word uint32_t
298 #define elf_sword int32_t
299 #define bswapSZs bswap32s
300 #include "hw/elf_ops.h"
312 #define elfhdr elf64_hdr
313 #define elf_phdr elf64_phdr
314 #define elf_note elf64_note
315 #define elf_shdr elf64_shdr
316 #define elf_sym elf64_sym
317 #define elf_rela elf64_rela
318 #define elf_word uint64_t
319 #define elf_sword int64_t
320 #define bswapSZs bswap64s
322 #include "hw/elf_ops.h"
324 const char *load_elf_strerror(int error)
329 case ELF_LOAD_FAILED:
330 return "Failed to load ELF";
331 case ELF_LOAD_NOT_ELF:
332 return "The image is not ELF";
333 case ELF_LOAD_WRONG_ARCH:
334 return "The image is from incompatible architecture";
335 case ELF_LOAD_WRONG_ENDIAN:
336 return "The image has incorrect endianness";
338 return "Unknown error";
342 void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp)
345 uint8_t e_ident_local[EI_NIDENT];
347 size_t hdr_size, off;
355 fd = open(filename, O_RDONLY | O_BINARY);
357 error_setg_errno(errp, errno, "Failed to open file: %s", filename);
360 if (read(fd, hdr, EI_NIDENT) != EI_NIDENT) {
361 error_setg_errno(errp, errno, "Failed to read file: %s", filename);
364 if (e_ident[0] != ELFMAG0 ||
365 e_ident[1] != ELFMAG1 ||
366 e_ident[2] != ELFMAG2 ||
367 e_ident[3] != ELFMAG3) {
368 error_setg(errp, "Bad ELF magic");
372 is64l = e_ident[EI_CLASS] == ELFCLASS64;
373 hdr_size = is64l ? sizeof(Elf64_Ehdr) : sizeof(Elf32_Ehdr);
379 while (hdr != e_ident_local && off < hdr_size) {
380 size_t br = read(fd, hdr + off, hdr_size - off);
383 error_setg(errp, "File too short: %s", filename);
386 error_setg_errno(errp, errno, "Failed to read file: %s",
397 /* return < 0 if error, otherwise the number of bytes loaded in memory */
398 int load_elf(const char *filename,
399 uint64_t (*elf_note_fn)(void *, void *, bool),
400 uint64_t (*translate_fn)(void *, uint64_t),
401 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
402 uint64_t *highaddr, int big_endian, int elf_machine,
403 int clear_lsb, int data_swab)
405 return load_elf_as(filename, elf_note_fn, translate_fn, translate_opaque,
406 pentry, lowaddr, highaddr, big_endian, elf_machine,
407 clear_lsb, data_swab, NULL);
410 /* return < 0 if error, otherwise the number of bytes loaded in memory */
411 int load_elf_as(const char *filename,
412 uint64_t (*elf_note_fn)(void *, void *, bool),
413 uint64_t (*translate_fn)(void *, uint64_t),
414 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
415 uint64_t *highaddr, int big_endian, int elf_machine,
416 int clear_lsb, int data_swab, AddressSpace *as)
418 return load_elf_ram(filename, elf_note_fn, translate_fn, translate_opaque,
419 pentry, lowaddr, highaddr, big_endian, elf_machine,
420 clear_lsb, data_swab, as, true);
423 /* return < 0 if error, otherwise the number of bytes loaded in memory */
424 int load_elf_ram(const char *filename,
425 uint64_t (*elf_note_fn)(void *, void *, bool),
426 uint64_t (*translate_fn)(void *, uint64_t),
427 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
428 uint64_t *highaddr, int big_endian, int elf_machine,
429 int clear_lsb, int data_swab, AddressSpace *as,
432 return load_elf_ram_sym(filename, elf_note_fn,
433 translate_fn, translate_opaque,
434 pentry, lowaddr, highaddr, big_endian,
435 elf_machine, clear_lsb, data_swab, as,
439 /* return < 0 if error, otherwise the number of bytes loaded in memory */
440 int load_elf_ram_sym(const char *filename,
441 uint64_t (*elf_note_fn)(void *, void *, bool),
442 uint64_t (*translate_fn)(void *, uint64_t),
443 void *translate_opaque, uint64_t *pentry,
444 uint64_t *lowaddr, uint64_t *highaddr, int big_endian,
445 int elf_machine, int clear_lsb, int data_swab,
446 AddressSpace *as, bool load_rom, symbol_fn_t sym_cb)
448 int fd, data_order, target_data_order, must_swab, ret = ELF_LOAD_FAILED;
449 uint8_t e_ident[EI_NIDENT];
451 fd = open(filename, O_RDONLY | O_BINARY);
456 if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
458 if (e_ident[0] != ELFMAG0 ||
459 e_ident[1] != ELFMAG1 ||
460 e_ident[2] != ELFMAG2 ||
461 e_ident[3] != ELFMAG3) {
462 ret = ELF_LOAD_NOT_ELF;
465 #ifdef HOST_WORDS_BIGENDIAN
466 data_order = ELFDATA2MSB;
468 data_order = ELFDATA2LSB;
470 must_swab = data_order != e_ident[EI_DATA];
472 target_data_order = ELFDATA2MSB;
474 target_data_order = ELFDATA2LSB;
477 if (target_data_order != e_ident[EI_DATA]) {
478 ret = ELF_LOAD_WRONG_ENDIAN;
482 lseek(fd, 0, SEEK_SET);
483 if (e_ident[EI_CLASS] == ELFCLASS64) {
484 ret = load_elf64(filename, fd, elf_note_fn,
485 translate_fn, translate_opaque, must_swab,
486 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
487 data_swab, as, load_rom, sym_cb);
489 ret = load_elf32(filename, fd, elf_note_fn,
490 translate_fn, translate_opaque, must_swab,
491 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
492 data_swab, as, load_rom, sym_cb);
500 static void bswap_uboot_header(uboot_image_header_t *hdr)
502 #ifndef HOST_WORDS_BIGENDIAN
503 bswap32s(&hdr->ih_magic);
504 bswap32s(&hdr->ih_hcrc);
505 bswap32s(&hdr->ih_time);
506 bswap32s(&hdr->ih_size);
507 bswap32s(&hdr->ih_load);
508 bswap32s(&hdr->ih_ep);
509 bswap32s(&hdr->ih_dcrc);
514 #define ZALLOC_ALIGNMENT 16
516 static void *zalloc(void *x, unsigned items, unsigned size)
521 size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
528 static void zfree(void *x, void *addr)
535 #define EXTRA_FIELD 4
538 #define RESERVED 0xe0
542 ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen)
551 if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
552 puts ("Error: Bad gzipped data\n");
555 if ((flags & EXTRA_FIELD) != 0)
556 i = 12 + src[10] + (src[11] << 8);
557 if ((flags & ORIG_NAME) != 0)
558 while (src[i++] != 0)
560 if ((flags & COMMENT) != 0)
561 while (src[i++] != 0)
563 if ((flags & HEAD_CRC) != 0)
566 puts ("Error: gunzip out of data in header\n");
573 r = inflateInit2(&s, -MAX_WBITS);
575 printf ("Error: inflateInit2() returned %d\n", r);
579 s.avail_in = srclen - i;
581 s.avail_out = dstlen;
582 r = inflate(&s, Z_FINISH);
583 if (r != Z_OK && r != Z_STREAM_END) {
584 printf ("Error: inflate() returned %d\n", r);
587 dstbytes = s.next_out - (unsigned char *) dst;
593 /* Load a U-Boot image. */
594 static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
595 int *is_linux, uint8_t image_type,
596 uint64_t (*translate_fn)(void *, uint64_t),
597 void *translate_opaque, AddressSpace *as)
602 uboot_image_header_t h;
603 uboot_image_header_t *hdr = &h;
604 uint8_t *data = NULL;
606 int do_uncompress = 0;
608 fd = open(filename, O_RDONLY | O_BINARY);
612 size = read(fd, hdr, sizeof(uboot_image_header_t));
613 if (size < sizeof(uboot_image_header_t)) {
617 bswap_uboot_header(hdr);
619 if (hdr->ih_magic != IH_MAGIC)
622 if (hdr->ih_type != image_type) {
623 if (!(image_type == IH_TYPE_KERNEL &&
624 hdr->ih_type == IH_TYPE_KERNEL_NOLOAD)) {
625 fprintf(stderr, "Wrong image type %d, expected %d\n", hdr->ih_type,
631 /* TODO: Implement other image types. */
632 switch (hdr->ih_type) {
633 case IH_TYPE_KERNEL_NOLOAD:
634 if (!loadaddr || *loadaddr == LOAD_UIMAGE_LOADADDR_INVALID) {
635 fprintf(stderr, "this image format (kernel_noload) cannot be "
636 "loaded on this machine type");
640 hdr->ih_load = *loadaddr + sizeof(*hdr);
641 hdr->ih_ep += hdr->ih_load;
644 address = hdr->ih_load;
646 address = translate_fn(translate_opaque, address);
649 *loadaddr = hdr->ih_load;
652 switch (hdr->ih_comp) {
660 "Unable to load u-boot images with compression type %d\n",
669 /* TODO: Check CPU type. */
671 if (hdr->ih_os == IH_OS_LINUX) {
679 case IH_TYPE_RAMDISK:
683 fprintf(stderr, "Unsupported u-boot image type %d\n", hdr->ih_type);
687 data = g_malloc(hdr->ih_size);
689 if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
690 fprintf(stderr, "Error reading file\n");
695 uint8_t *compressed_data;
699 compressed_data = data;
700 max_bytes = UBOOT_MAX_GUNZIP_BYTES;
701 data = g_malloc(max_bytes);
703 bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
704 g_free(compressed_data);
706 fprintf(stderr, "Unable to decompress gzipped image!\n");
709 hdr->ih_size = bytes;
712 rom_add_blob_fixed_as(filename, data, hdr->ih_size, address, as);
722 int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr,
724 uint64_t (*translate_fn)(void *, uint64_t),
725 void *translate_opaque)
727 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
728 translate_fn, translate_opaque, NULL);
731 int load_uimage_as(const char *filename, hwaddr *ep, hwaddr *loadaddr,
733 uint64_t (*translate_fn)(void *, uint64_t),
734 void *translate_opaque, AddressSpace *as)
736 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
737 translate_fn, translate_opaque, as);
740 /* Load a ramdisk. */
741 int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz)
743 return load_ramdisk_as(filename, addr, max_sz, NULL);
746 int load_ramdisk_as(const char *filename, hwaddr addr, uint64_t max_sz,
749 return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK,
753 /* Load a gzip-compressed kernel to a dynamically allocated buffer. */
754 int load_image_gzipped_buffer(const char *filename, uint64_t max_sz,
757 uint8_t *compressed_data = NULL;
758 uint8_t *data = NULL;
763 if (!g_file_get_contents(filename, (char **) &compressed_data, &len,
768 /* Is it a gzip-compressed file? */
770 compressed_data[0] != 0x1f ||
771 compressed_data[1] != 0x8b) {
775 if (max_sz > LOAD_IMAGE_MAX_GUNZIP_BYTES) {
776 max_sz = LOAD_IMAGE_MAX_GUNZIP_BYTES;
779 data = g_malloc(max_sz);
780 bytes = gunzip(data, max_sz, compressed_data, len);
782 fprintf(stderr, "%s: unable to decompress gzipped kernel file\n",
787 /* trim to actual size and return to caller */
788 *buffer = g_realloc(data, bytes);
790 /* ownership has been transferred to caller */
794 g_free(compressed_data);
799 /* Load a gzip-compressed kernel. */
800 int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz)
805 bytes = load_image_gzipped_buffer(filename, max_sz, &data);
807 rom_add_blob_fixed(filename, data, bytes, addr);
814 * Functions for reboot-persistent memory regions.
815 * - used for vga bios and option roms.
816 * - also linux kernel (-kernel / -initrd).
819 typedef struct Rom Rom;
825 /* datasize is the amount of memory allocated in "data". If datasize is less
826 * than romsize, it means that the area from datasize to romsize is filled
842 QTAILQ_ENTRY(Rom) next;
845 static FWCfgState *fw_cfg;
846 static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
848 /* rom->data must be heap-allocated (do not use with rom_add_elf_program()) */
849 static void rom_free(Rom *rom)
855 g_free(rom->fw_file);
859 static inline bool rom_order_compare(Rom *rom, Rom *item)
861 return ((uintptr_t)(void *)rom->as > (uintptr_t)(void *)item->as) ||
862 (rom->as == item->as && rom->addr >= item->addr);
865 static void rom_insert(Rom *rom)
870 hw_error ("ROM images must be loaded at startup\n");
873 /* The user didn't specify an address space, this is the default */
875 rom->as = &address_space_memory;
878 rom->committed = false;
880 /* List is ordered by load address in the same address space */
881 QTAILQ_FOREACH(item, &roms, next) {
882 if (rom_order_compare(rom, item)) {
885 QTAILQ_INSERT_BEFORE(item, rom, next);
888 QTAILQ_INSERT_TAIL(&roms, rom, next);
891 static void fw_cfg_resized(const char *id, uint64_t length, void *host)
894 fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length);
898 static void *rom_set_mr(Rom *rom, Object *owner, const char *name, bool ro)
902 rom->mr = g_malloc(sizeof(*rom->mr));
903 memory_region_init_resizeable_ram(rom->mr, owner, name,
904 rom->datasize, rom->romsize,
907 memory_region_set_readonly(rom->mr, ro);
908 vmstate_register_ram_global(rom->mr);
910 data = memory_region_get_ram_ptr(rom->mr);
911 memcpy(data, rom->data, rom->datasize);
916 int rom_add_file(const char *file, const char *fw_dir,
917 hwaddr addr, int32_t bootindex,
918 bool option_rom, MemoryRegion *mr,
921 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
927 fprintf(stderr, "Specifying an Address Space and Memory Region is " \
928 "not valid when loading a rom\n");
929 /* We haven't allocated anything so we don't need any cleanup */
933 rom = g_malloc0(sizeof(*rom));
934 rom->name = g_strdup(file);
935 rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
937 if (rom->path == NULL) {
938 rom->path = g_strdup(file);
941 fd = open(rom->path, O_RDONLY | O_BINARY);
943 fprintf(stderr, "Could not open option rom '%s': %s\n",
944 rom->path, strerror(errno));
949 rom->fw_dir = g_strdup(fw_dir);
950 rom->fw_file = g_strdup(file);
953 rom->romsize = lseek(fd, 0, SEEK_END);
954 if (rom->romsize == -1) {
955 fprintf(stderr, "rom: file %-20s: get size error: %s\n",
956 rom->name, strerror(errno));
960 rom->datasize = rom->romsize;
961 rom->data = g_malloc0(rom->datasize);
962 lseek(fd, 0, SEEK_SET);
963 rc = read(fd, rom->data, rom->datasize);
964 if (rc != rom->datasize) {
965 fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
966 rom->name, rc, rom->datasize);
971 if (rom->fw_file && fw_cfg) {
972 const char *basename;
973 char fw_file_name[FW_CFG_MAX_FILE_PATH];
976 basename = strrchr(rom->fw_file, '/');
980 basename = rom->fw_file;
982 snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir,
984 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
986 if ((!option_rom || mc->option_rom_has_mr) && mc->rom_file_has_mr) {
987 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, true);
992 fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize);
996 snprintf(devpath, sizeof(devpath), "/rom@%s", file);
998 snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr);
1002 add_boot_device_path(bootindex, NULL, devpath);
1013 MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
1014 size_t max_len, hwaddr addr, const char *fw_file_name,
1015 FWCfgCallback fw_callback, void *callback_opaque,
1016 AddressSpace *as, bool read_only)
1018 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
1020 MemoryRegion *mr = NULL;
1022 rom = g_malloc0(sizeof(*rom));
1023 rom->name = g_strdup(name);
1026 rom->romsize = max_len ? max_len : len;
1027 rom->datasize = len;
1028 rom->data = g_malloc0(rom->datasize);
1029 memcpy(rom->data, blob, len);
1031 if (fw_file_name && fw_cfg) {
1036 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
1038 snprintf(devpath, sizeof(devpath), "/ram@%s", fw_file_name);
1041 if (mc->rom_file_has_mr) {
1042 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, read_only);
1048 fw_cfg_add_file_callback(fw_cfg, fw_file_name,
1049 fw_callback, NULL, callback_opaque,
1050 data, rom->datasize, read_only);
1055 /* This function is specific for elf program because we don't need to allocate
1056 * all the rom. We just allocate the first part and the rest is just zeros. This
1057 * is why romsize and datasize are different. Also, this function seize the
1058 * memory ownership of "data", so we don't have to allocate and copy the buffer.
1060 int rom_add_elf_program(const char *name, void *data, size_t datasize,
1061 size_t romsize, hwaddr addr, AddressSpace *as)
1065 rom = g_malloc0(sizeof(*rom));
1066 rom->name = g_strdup(name);
1068 rom->datasize = datasize;
1069 rom->romsize = romsize;
1076 int rom_add_vga(const char *file)
1078 return rom_add_file(file, "vgaroms", 0, -1, true, NULL, NULL);
1081 int rom_add_option(const char *file, int32_t bootindex)
1083 return rom_add_file(file, "genroms", 0, bootindex, true, NULL, NULL);
1086 static void rom_reset(void *unused)
1090 QTAILQ_FOREACH(rom, &roms, next) {
1094 if (rom->data == NULL) {
1098 void *host = memory_region_get_ram_ptr(rom->mr);
1099 memcpy(host, rom->data, rom->datasize);
1101 address_space_write_rom(rom->as, rom->addr, MEMTXATTRS_UNSPECIFIED,
1102 rom->data, rom->datasize);
1105 /* rom needs to be written only once */
1110 * The rom loader is really on the same level as firmware in the guest
1111 * shadowing a ROM into RAM. Such a shadowing mechanism needs to ensure
1112 * that the instruction cache for that new region is clear, so that the
1113 * CPU definitely fetches its instructions from the just written data.
1115 cpu_flush_icache_range(rom->addr, rom->datasize);
1119 int rom_check_and_register_reset(void)
1122 MemoryRegionSection section;
1124 AddressSpace *as = NULL;
1126 QTAILQ_FOREACH(rom, &roms, next) {
1131 if ((addr > rom->addr) && (as == rom->as)) {
1132 fprintf(stderr, "rom: requested regions overlap "
1133 "(rom %s. free=0x" TARGET_FMT_plx
1134 ", addr=0x" TARGET_FMT_plx ")\n",
1135 rom->name, addr, rom->addr);
1139 addr += rom->romsize;
1142 section = memory_region_find(rom->mr ? rom->mr : get_system_memory(),
1144 rom->isrom = int128_nz(section.size) && memory_region_is_rom(section.mr);
1145 memory_region_unref(section.mr);
1147 qemu_register_reset(rom_reset, NULL);
1152 void rom_set_fw(FWCfgState *f)
1157 void rom_set_order_override(int order)
1161 fw_cfg_set_order_override(fw_cfg, order);
1164 void rom_reset_order_override(void)
1168 fw_cfg_reset_order_override(fw_cfg);
1171 void rom_transaction_begin(void)
1175 /* Ignore ROMs added without the transaction API */
1176 QTAILQ_FOREACH(rom, &roms, next) {
1177 rom->committed = true;
1181 void rom_transaction_end(bool commit)
1186 QTAILQ_FOREACH_SAFE(rom, &roms, next, tmp) {
1187 if (rom->committed) {
1191 rom->committed = true;
1193 QTAILQ_REMOVE(&roms, rom, next);
1199 static Rom *find_rom(hwaddr addr, size_t size)
1203 QTAILQ_FOREACH(rom, &roms, next) {
1210 if (rom->addr > addr) {
1213 if (rom->addr + rom->romsize < addr + size) {
1222 * Copies memory from registered ROMs to dest. Any memory that is contained in
1223 * a ROM between addr and addr + size is copied. Note that this can involve
1224 * multiple ROMs, which need not start at addr and need not end at addr + size.
1226 int rom_copy(uint8_t *dest, hwaddr addr, size_t size)
1228 hwaddr end = addr + size;
1229 uint8_t *s, *d = dest;
1233 QTAILQ_FOREACH(rom, &roms, next) {
1240 if (rom->addr + rom->romsize < addr) {
1243 if (rom->addr > end) {
1247 d = dest + (rom->addr - addr);
1251 if ((d + l) > (dest + size)) {
1259 if (rom->romsize > rom->datasize) {
1260 /* If datasize is less than romsize, it means that we didn't
1261 * allocate all the ROM because the trailing data are only zeros.
1265 l = rom->romsize - rom->datasize;
1267 if ((d + l) > (dest + size)) {
1268 /* Rom size doesn't fit in the destination area. Adjust to avoid
1280 return (d + l) - dest;
1283 void *rom_ptr(hwaddr addr, size_t size)
1287 rom = find_rom(addr, size);
1288 if (!rom || !rom->data)
1290 return rom->data + (addr - rom->addr);
1293 void hmp_info_roms(Monitor *mon, const QDict *qdict)
1297 QTAILQ_FOREACH(rom, &roms, next) {
1299 monitor_printf(mon, "%s"
1300 " size=0x%06zx name=\"%s\"\n",
1301 memory_region_name(rom->mr),
1304 } else if (!rom->fw_file) {
1305 monitor_printf(mon, "addr=" TARGET_FMT_plx
1306 " size=0x%06zx mem=%s name=\"%s\"\n",
1307 rom->addr, rom->romsize,
1308 rom->isrom ? "rom" : "ram",
1311 monitor_printf(mon, "fw=%s/%s"
1312 " size=0x%06zx name=\"%s\"\n",
1321 typedef enum HexRecord HexRecord;
1325 EXT_SEG_ADDR_RECORD,
1326 START_SEG_ADDR_RECORD,
1327 EXT_LINEAR_ADDR_RECORD,
1328 START_LINEAR_ADDR_RECORD,
1331 /* Each record contains a 16-bit address which is combined with the upper 16
1332 * bits of the implicit "next address" to form a 32-bit address.
1334 #define NEXT_ADDR_MASK 0xffff0000
1336 #define DATA_FIELD_MAX_LEN 0xff
1337 #define LEN_EXCEPT_DATA 0x5
1338 /* 0x5 = sizeof(byte_count) + sizeof(address) + sizeof(record_type) +
1339 * sizeof(checksum) */
1343 uint8_t record_type;
1344 uint8_t data[DATA_FIELD_MAX_LEN];
1348 /* return 0 or -1 if error */
1349 static bool parse_record(HexLine *line, uint8_t *our_checksum, const uint8_t c,
1350 uint32_t *index, const bool in_process)
1352 /* +-------+---------------+-------+---------------------+--------+
1353 * | byte | |record | | |
1354 * | count | address | type | data |checksum|
1355 * +-------+---------------+-------+---------------------+--------+
1357 * |1 byte | 2 bytes |1 byte | 0-255 bytes | 1 byte |
1360 uint32_t idx = *index;
1362 if (g_ascii_isspace(c)) {
1365 if (!g_ascii_isxdigit(c) || !in_process) {
1368 value = g_ascii_xdigit_value(c);
1369 value = (idx & 0x1) ? (value & 0xf) : (value << 4);
1371 line->byte_count |= value;
1372 } else if (2 <= idx && idx < 6) {
1373 line->address <<= 4;
1374 line->address += g_ascii_xdigit_value(c);
1375 } else if (6 <= idx && idx < 8) {
1376 line->record_type |= value;
1377 } else if (8 <= idx && idx < 8 + 2 * line->byte_count) {
1378 line->data[(idx - 8) >> 1] |= value;
1379 } else if (8 + 2 * line->byte_count <= idx &&
1380 idx < 10 + 2 * line->byte_count) {
1381 line->checksum |= value;
1385 *our_checksum += value;
1391 const char *filename;
1396 uint32_t next_address_to_write;
1397 uint32_t current_address;
1398 uint32_t current_rom_index;
1399 uint32_t rom_start_address;
1403 /* return size or -1 if error */
1404 static int handle_record_type(HexParser *parser)
1406 HexLine *line = &(parser->line);
1407 switch (line->record_type) {
1409 parser->current_address =
1410 (parser->next_address_to_write & NEXT_ADDR_MASK) | line->address;
1411 /* verify this is a contiguous block of memory */
1412 if (parser->current_address != parser->next_address_to_write) {
1413 if (parser->current_rom_index != 0) {
1414 rom_add_blob_fixed_as(parser->filename, parser->bin_buf,
1415 parser->current_rom_index,
1416 parser->rom_start_address, parser->as);
1418 parser->rom_start_address = parser->current_address;
1419 parser->current_rom_index = 0;
1422 /* copy from line buffer to output bin_buf */
1423 memcpy(parser->bin_buf + parser->current_rom_index, line->data,
1425 parser->current_rom_index += line->byte_count;
1426 parser->total_size += line->byte_count;
1427 /* save next address to write */
1428 parser->next_address_to_write =
1429 parser->current_address + line->byte_count;
1433 if (parser->current_rom_index != 0) {
1434 rom_add_blob_fixed_as(parser->filename, parser->bin_buf,
1435 parser->current_rom_index,
1436 parser->rom_start_address, parser->as);
1438 return parser->total_size;
1439 case EXT_SEG_ADDR_RECORD:
1440 case EXT_LINEAR_ADDR_RECORD:
1441 if (line->byte_count != 2 && line->address != 0) {
1445 if (parser->current_rom_index != 0) {
1446 rom_add_blob_fixed_as(parser->filename, parser->bin_buf,
1447 parser->current_rom_index,
1448 parser->rom_start_address, parser->as);
1451 /* save next address to write,
1452 * in case of non-contiguous block of memory */
1453 parser->next_address_to_write = (line->data[0] << 12) |
1454 (line->data[1] << 4);
1455 if (line->record_type == EXT_LINEAR_ADDR_RECORD) {
1456 parser->next_address_to_write <<= 12;
1459 parser->rom_start_address = parser->next_address_to_write;
1460 parser->current_rom_index = 0;
1463 case START_SEG_ADDR_RECORD:
1464 if (line->byte_count != 4 && line->address != 0) {
1468 /* x86 16-bit CS:IP segmented addressing */
1469 *(parser->start_addr) = (((line->data[0] << 8) | line->data[1]) << 4) +
1470 ((line->data[2] << 8) | line->data[3]);
1473 case START_LINEAR_ADDR_RECORD:
1474 if (line->byte_count != 4 && line->address != 0) {
1478 *(parser->start_addr) = ldl_be_p(line->data);
1485 return parser->total_size;
1488 /* return size or -1 if error */
1489 static int parse_hex_blob(const char *filename, hwaddr *addr, uint8_t *hex_blob,
1490 size_t hex_blob_size, AddressSpace *as)
1492 bool in_process = false; /* avoid re-enter and
1493 * check whether record begin with ':' */
1494 uint8_t *end = hex_blob + hex_blob_size;
1495 uint8_t our_checksum = 0;
1496 uint32_t record_index = 0;
1497 HexParser parser = {
1498 .filename = filename,
1499 .bin_buf = g_malloc(hex_blob_size),
1504 rom_transaction_begin();
1506 for (; hex_blob < end; ++hex_blob) {
1507 switch (*hex_blob) {
1515 if ((LEN_EXCEPT_DATA + parser.line.byte_count) * 2 !=
1517 our_checksum != 0) {
1518 parser.total_size = -1;
1522 if (handle_record_type(&parser) == -1) {
1523 parser.total_size = -1;
1528 /* start of a new record. */
1530 memset(&parser.line, 0, sizeof(HexLine));
1535 /* decoding lines */
1537 if (!parse_record(&parser.line, &our_checksum, *hex_blob,
1538 &record_index, in_process)) {
1539 parser.total_size = -1;
1547 g_free(parser.bin_buf);
1548 rom_transaction_end(parser.total_size != -1);
1549 return parser.total_size;
1552 /* return size or -1 if error */
1553 int load_targphys_hex_as(const char *filename, hwaddr *entry, AddressSpace *as)
1555 gsize hex_blob_size;
1559 if (!g_file_get_contents(filename, &hex_blob, &hex_blob_size, NULL)) {
1563 total_size = parse_hex_blob(filename, entry, (uint8_t *)hex_blob,