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 int get_image_size(const char *filename)
67 fd = open(filename, O_RDONLY | O_BINARY);
70 size = lseek(fd, 0, SEEK_END);
75 /* return the size or -1 if error */
76 /* deprecated, because caller does not specify buffer size! */
77 int load_image(const char *filename, uint8_t *addr)
80 fd = open(filename, O_RDONLY | O_BINARY);
83 size = lseek(fd, 0, SEEK_END);
85 fprintf(stderr, "file %-20s: get size error: %s\n",
86 filename, strerror(errno));
91 lseek(fd, 0, SEEK_SET);
92 if (read(fd, addr, size) != size) {
100 /* return the size or -1 if error */
101 ssize_t load_image_size(const char *filename, void *addr, size_t size)
106 fd = open(filename, O_RDONLY | O_BINARY);
111 actsize = read(fd, addr, size);
121 /* read()-like version */
122 ssize_t read_targphys(const char *name,
123 int fd, hwaddr dst_addr, size_t nbytes)
128 buf = g_malloc(nbytes);
129 did = read(fd, buf, nbytes);
131 rom_add_blob_fixed("read", buf, did, dst_addr);
136 int load_image_targphys(const char *filename,
137 hwaddr addr, uint64_t max_sz)
139 return load_image_targphys_as(filename, addr, max_sz, NULL);
142 /* return the size or -1 if error */
143 int load_image_targphys_as(const char *filename,
144 hwaddr addr, uint64_t max_sz, AddressSpace *as)
148 size = get_image_size(filename);
149 if (size < 0 || size > max_sz) {
153 if (rom_add_file_fixed_as(filename, addr, -1, as) < 0) {
160 int load_image_mr(const char *filename, MemoryRegion *mr)
164 if (!memory_access_is_direct(mr, false)) {
165 /* Can only load an image into RAM or ROM */
169 size = get_image_size(filename);
171 if (size < 0 || size > memory_region_size(mr)) {
175 if (rom_add_file_mr(filename, mr, -1) < 0) {
182 void pstrcpy_targphys(const char *name, hwaddr dest, int buf_size,
188 if (buf_size <= 0) return;
189 nulp = memchr(source, 0, buf_size);
191 rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
193 rom_add_blob_fixed(name, source, buf_size, dest);
194 ptr = rom_ptr(dest + buf_size - 1);
203 uint32_t a_info; /* Use macros N_MAGIC, etc for access */
204 uint32_t a_text; /* length of text, in bytes */
205 uint32_t a_data; /* length of data, in bytes */
206 uint32_t a_bss; /* length of uninitialized data area, in bytes */
207 uint32_t a_syms; /* length of symbol table data in file, in bytes */
208 uint32_t a_entry; /* start address */
209 uint32_t a_trsize; /* length of relocation info for text, in bytes */
210 uint32_t a_drsize; /* length of relocation info for data, in bytes */
213 static void bswap_ahdr(struct exec *e)
215 bswap32s(&e->a_info);
216 bswap32s(&e->a_text);
217 bswap32s(&e->a_data);
219 bswap32s(&e->a_syms);
220 bswap32s(&e->a_entry);
221 bswap32s(&e->a_trsize);
222 bswap32s(&e->a_drsize);
225 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
230 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
231 #define N_TXTOFF(x) \
232 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
233 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
234 #define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
235 #define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
237 #define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
239 #define N_DATADDR(x, target_page_size) \
240 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
241 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
244 int load_aout(const char *filename, hwaddr addr, int max_sz,
245 int bswap_needed, hwaddr target_page_size)
252 fd = open(filename, O_RDONLY | O_BINARY);
256 size = read(fd, &e, sizeof(e));
269 if (e.a_text + e.a_data > max_sz)
271 lseek(fd, N_TXTOFF(e), SEEK_SET);
272 size = read_targphys(filename, fd, addr, e.a_text + e.a_data);
277 if (N_DATADDR(e, target_page_size) + e.a_data > max_sz)
279 lseek(fd, N_TXTOFF(e), SEEK_SET);
280 size = read_targphys(filename, fd, addr, e.a_text);
283 ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size),
301 static void *load_at(int fd, off_t offset, size_t size)
304 if (lseek(fd, offset, SEEK_SET) < 0)
306 ptr = g_malloc(size);
307 if (read(fd, ptr, size) != size) {
318 #define ELF_CLASS ELFCLASS32
322 #define elf_word uint32_t
323 #define elf_sword int32_t
324 #define bswapSZs bswap32s
325 #include "hw/elf_ops.h"
337 #define elfhdr elf64_hdr
338 #define elf_phdr elf64_phdr
339 #define elf_note elf64_note
340 #define elf_shdr elf64_shdr
341 #define elf_sym elf64_sym
342 #define elf_rela elf64_rela
343 #define elf_word uint64_t
344 #define elf_sword int64_t
345 #define bswapSZs bswap64s
347 #include "hw/elf_ops.h"
349 const char *load_elf_strerror(int error)
354 case ELF_LOAD_FAILED:
355 return "Failed to load ELF";
356 case ELF_LOAD_NOT_ELF:
357 return "The image is not ELF";
358 case ELF_LOAD_WRONG_ARCH:
359 return "The image is from incompatible architecture";
360 case ELF_LOAD_WRONG_ENDIAN:
361 return "The image has incorrect endianness";
363 return "Unknown error";
367 void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp)
370 uint8_t e_ident_local[EI_NIDENT];
372 size_t hdr_size, off;
380 fd = open(filename, O_RDONLY | O_BINARY);
382 error_setg_errno(errp, errno, "Failed to open file: %s", filename);
385 if (read(fd, hdr, EI_NIDENT) != EI_NIDENT) {
386 error_setg_errno(errp, errno, "Failed to read file: %s", filename);
389 if (e_ident[0] != ELFMAG0 ||
390 e_ident[1] != ELFMAG1 ||
391 e_ident[2] != ELFMAG2 ||
392 e_ident[3] != ELFMAG3) {
393 error_setg(errp, "Bad ELF magic");
397 is64l = e_ident[EI_CLASS] == ELFCLASS64;
398 hdr_size = is64l ? sizeof(Elf64_Ehdr) : sizeof(Elf32_Ehdr);
404 while (hdr != e_ident_local && off < hdr_size) {
405 size_t br = read(fd, hdr + off, hdr_size - off);
408 error_setg(errp, "File too short: %s", filename);
411 error_setg_errno(errp, errno, "Failed to read file: %s",
422 /* return < 0 if error, otherwise the number of bytes loaded in memory */
423 int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
424 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
425 uint64_t *highaddr, int big_endian, int elf_machine,
426 int clear_lsb, int data_swab)
428 return load_elf_as(filename, translate_fn, translate_opaque, pentry,
429 lowaddr, highaddr, big_endian, elf_machine, clear_lsb,
433 /* return < 0 if error, otherwise the number of bytes loaded in memory */
434 int load_elf_as(const char *filename,
435 uint64_t (*translate_fn)(void *, uint64_t),
436 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
437 uint64_t *highaddr, int big_endian, int elf_machine,
438 int clear_lsb, int data_swab, AddressSpace *as)
440 return load_elf_ram(filename, translate_fn, translate_opaque,
441 pentry, lowaddr, highaddr, big_endian, elf_machine,
442 clear_lsb, data_swab, as, true);
445 /* return < 0 if error, otherwise the number of bytes loaded in memory */
446 int load_elf_ram(const char *filename,
447 uint64_t (*translate_fn)(void *, uint64_t),
448 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
449 uint64_t *highaddr, int big_endian, int elf_machine,
450 int clear_lsb, int data_swab, AddressSpace *as,
453 int fd, data_order, target_data_order, must_swab, ret = ELF_LOAD_FAILED;
454 uint8_t e_ident[EI_NIDENT];
456 fd = open(filename, O_RDONLY | O_BINARY);
461 if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
463 if (e_ident[0] != ELFMAG0 ||
464 e_ident[1] != ELFMAG1 ||
465 e_ident[2] != ELFMAG2 ||
466 e_ident[3] != ELFMAG3) {
467 ret = ELF_LOAD_NOT_ELF;
470 #ifdef HOST_WORDS_BIGENDIAN
471 data_order = ELFDATA2MSB;
473 data_order = ELFDATA2LSB;
475 must_swab = data_order != e_ident[EI_DATA];
477 target_data_order = ELFDATA2MSB;
479 target_data_order = ELFDATA2LSB;
482 if (target_data_order != e_ident[EI_DATA]) {
483 ret = ELF_LOAD_WRONG_ENDIAN;
487 lseek(fd, 0, SEEK_SET);
488 if (e_ident[EI_CLASS] == ELFCLASS64) {
489 ret = load_elf64(filename, fd, translate_fn, translate_opaque, must_swab,
490 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
491 data_swab, as, load_rom);
493 ret = load_elf32(filename, fd, translate_fn, translate_opaque, must_swab,
494 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
495 data_swab, as, load_rom);
503 static void bswap_uboot_header(uboot_image_header_t *hdr)
505 #ifndef HOST_WORDS_BIGENDIAN
506 bswap32s(&hdr->ih_magic);
507 bswap32s(&hdr->ih_hcrc);
508 bswap32s(&hdr->ih_time);
509 bswap32s(&hdr->ih_size);
510 bswap32s(&hdr->ih_load);
511 bswap32s(&hdr->ih_ep);
512 bswap32s(&hdr->ih_dcrc);
517 #define ZALLOC_ALIGNMENT 16
519 static void *zalloc(void *x, unsigned items, unsigned size)
524 size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
531 static void zfree(void *x, void *addr)
538 #define EXTRA_FIELD 4
541 #define RESERVED 0xe0
545 ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen)
554 if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
555 puts ("Error: Bad gzipped data\n");
558 if ((flags & EXTRA_FIELD) != 0)
559 i = 12 + src[10] + (src[11] << 8);
560 if ((flags & ORIG_NAME) != 0)
561 while (src[i++] != 0)
563 if ((flags & COMMENT) != 0)
564 while (src[i++] != 0)
566 if ((flags & HEAD_CRC) != 0)
569 puts ("Error: gunzip out of data in header\n");
576 r = inflateInit2(&s, -MAX_WBITS);
578 printf ("Error: inflateInit2() returned %d\n", r);
582 s.avail_in = srclen - i;
584 s.avail_out = dstlen;
585 r = inflate(&s, Z_FINISH);
586 if (r != Z_OK && r != Z_STREAM_END) {
587 printf ("Error: inflate() returned %d\n", r);
590 dstbytes = s.next_out - (unsigned char *) dst;
596 /* Load a U-Boot image. */
597 static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
598 int *is_linux, uint8_t image_type,
599 uint64_t (*translate_fn)(void *, uint64_t),
600 void *translate_opaque, AddressSpace *as)
605 uboot_image_header_t h;
606 uboot_image_header_t *hdr = &h;
607 uint8_t *data = NULL;
609 int do_uncompress = 0;
611 fd = open(filename, O_RDONLY | O_BINARY);
615 size = read(fd, hdr, sizeof(uboot_image_header_t));
616 if (size < sizeof(uboot_image_header_t)) {
620 bswap_uboot_header(hdr);
622 if (hdr->ih_magic != IH_MAGIC)
625 if (hdr->ih_type != image_type) {
626 fprintf(stderr, "Wrong image type %d, expected %d\n", hdr->ih_type,
631 /* TODO: Implement other image types. */
632 switch (hdr->ih_type) {
634 address = hdr->ih_load;
636 address = translate_fn(translate_opaque, address);
639 *loadaddr = hdr->ih_load;
642 switch (hdr->ih_comp) {
650 "Unable to load u-boot images with compression type %d\n",
659 /* TODO: Check CPU type. */
661 if (hdr->ih_os == IH_OS_LINUX) {
669 case IH_TYPE_RAMDISK:
673 fprintf(stderr, "Unsupported u-boot image type %d\n", hdr->ih_type);
677 data = g_malloc(hdr->ih_size);
679 if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
680 fprintf(stderr, "Error reading file\n");
685 uint8_t *compressed_data;
689 compressed_data = data;
690 max_bytes = UBOOT_MAX_GUNZIP_BYTES;
691 data = g_malloc(max_bytes);
693 bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
694 g_free(compressed_data);
696 fprintf(stderr, "Unable to decompress gzipped image!\n");
699 hdr->ih_size = bytes;
702 rom_add_blob_fixed_as(filename, data, hdr->ih_size, address, as);
712 int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr,
714 uint64_t (*translate_fn)(void *, uint64_t),
715 void *translate_opaque)
717 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
718 translate_fn, translate_opaque, NULL);
721 int load_uimage_as(const char *filename, hwaddr *ep, hwaddr *loadaddr,
723 uint64_t (*translate_fn)(void *, uint64_t),
724 void *translate_opaque, AddressSpace *as)
726 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
727 translate_fn, translate_opaque, as);
730 /* Load a ramdisk. */
731 int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz)
733 return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK,
737 /* Load a gzip-compressed kernel to a dynamically allocated buffer. */
738 int load_image_gzipped_buffer(const char *filename, uint64_t max_sz,
741 uint8_t *compressed_data = NULL;
742 uint8_t *data = NULL;
747 if (!g_file_get_contents(filename, (char **) &compressed_data, &len,
752 /* Is it a gzip-compressed file? */
754 compressed_data[0] != 0x1f ||
755 compressed_data[1] != 0x8b) {
759 if (max_sz > LOAD_IMAGE_MAX_GUNZIP_BYTES) {
760 max_sz = LOAD_IMAGE_MAX_GUNZIP_BYTES;
763 data = g_malloc(max_sz);
764 bytes = gunzip(data, max_sz, compressed_data, len);
766 fprintf(stderr, "%s: unable to decompress gzipped kernel file\n",
771 /* trim to actual size and return to caller */
772 *buffer = g_realloc(data, bytes);
774 /* ownership has been transferred to caller */
778 g_free(compressed_data);
783 /* Load a gzip-compressed kernel. */
784 int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz)
789 bytes = load_image_gzipped_buffer(filename, max_sz, &data);
791 rom_add_blob_fixed(filename, data, bytes, addr);
798 * Functions for reboot-persistent memory regions.
799 * - used for vga bios and option roms.
800 * - also linux kernel (-kernel / -initrd).
803 typedef struct Rom Rom;
809 /* datasize is the amount of memory allocated in "data". If datasize is less
810 * than romsize, it means that the area from datasize to romsize is filled
824 QTAILQ_ENTRY(Rom) next;
827 static FWCfgState *fw_cfg;
828 static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
830 static inline bool rom_order_compare(Rom *rom, Rom *item)
832 return ((uintptr_t)(void *)rom->as > (uintptr_t)(void *)item->as) ||
833 (rom->as == item->as && rom->addr >= item->addr);
836 static void rom_insert(Rom *rom)
841 hw_error ("ROM images must be loaded at startup\n");
844 /* The user didn't specify an address space, this is the default */
846 rom->as = &address_space_memory;
849 /* List is ordered by load address in the same address space */
850 QTAILQ_FOREACH(item, &roms, next) {
851 if (rom_order_compare(rom, item)) {
854 QTAILQ_INSERT_BEFORE(item, rom, next);
857 QTAILQ_INSERT_TAIL(&roms, rom, next);
860 static void fw_cfg_resized(const char *id, uint64_t length, void *host)
863 fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length);
867 static void *rom_set_mr(Rom *rom, Object *owner, const char *name, bool ro)
871 rom->mr = g_malloc(sizeof(*rom->mr));
872 memory_region_init_resizeable_ram(rom->mr, owner, name,
873 rom->datasize, rom->romsize,
876 memory_region_set_readonly(rom->mr, ro);
877 vmstate_register_ram_global(rom->mr);
879 data = memory_region_get_ram_ptr(rom->mr);
880 memcpy(data, rom->data, rom->datasize);
885 int rom_add_file(const char *file, const char *fw_dir,
886 hwaddr addr, int32_t bootindex,
887 bool option_rom, MemoryRegion *mr,
890 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
896 fprintf(stderr, "Specifying an Address Space and Memory Region is " \
897 "not valid when loading a rom\n");
898 /* We haven't allocated anything so we don't need any cleanup */
902 rom = g_malloc0(sizeof(*rom));
903 rom->name = g_strdup(file);
904 rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
906 if (rom->path == NULL) {
907 rom->path = g_strdup(file);
910 fd = open(rom->path, O_RDONLY | O_BINARY);
912 fprintf(stderr, "Could not open option rom '%s': %s\n",
913 rom->path, strerror(errno));
918 rom->fw_dir = g_strdup(fw_dir);
919 rom->fw_file = g_strdup(file);
922 rom->romsize = lseek(fd, 0, SEEK_END);
923 if (rom->romsize == -1) {
924 fprintf(stderr, "rom: file %-20s: get size error: %s\n",
925 rom->name, strerror(errno));
929 rom->datasize = rom->romsize;
930 rom->data = g_malloc0(rom->datasize);
931 lseek(fd, 0, SEEK_SET);
932 rc = read(fd, rom->data, rom->datasize);
933 if (rc != rom->datasize) {
934 fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
935 rom->name, rc, rom->datasize);
940 if (rom->fw_file && fw_cfg) {
941 const char *basename;
942 char fw_file_name[FW_CFG_MAX_FILE_PATH];
945 basename = strrchr(rom->fw_file, '/');
949 basename = rom->fw_file;
951 snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir,
953 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
955 if ((!option_rom || mc->option_rom_has_mr) && mc->rom_file_has_mr) {
956 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, true);
961 fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize);
965 snprintf(devpath, sizeof(devpath), "/rom@%s", file);
967 snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr);
971 add_boot_device_path(bootindex, NULL, devpath);
983 g_free(rom->fw_file);
990 MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
991 size_t max_len, hwaddr addr, const char *fw_file_name,
992 FWCfgCallback fw_callback, void *callback_opaque,
993 AddressSpace *as, bool read_only)
995 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
997 MemoryRegion *mr = NULL;
999 rom = g_malloc0(sizeof(*rom));
1000 rom->name = g_strdup(name);
1003 rom->romsize = max_len ? max_len : len;
1004 rom->datasize = len;
1005 rom->data = g_malloc0(rom->datasize);
1006 memcpy(rom->data, blob, len);
1008 if (fw_file_name && fw_cfg) {
1013 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
1015 snprintf(devpath, sizeof(devpath), "/ram@%s", fw_file_name);
1018 if (mc->rom_file_has_mr) {
1019 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, read_only);
1025 fw_cfg_add_file_callback(fw_cfg, fw_file_name,
1026 fw_callback, NULL, callback_opaque,
1027 data, rom->datasize, read_only);
1032 /* This function is specific for elf program because we don't need to allocate
1033 * all the rom. We just allocate the first part and the rest is just zeros. This
1034 * is why romsize and datasize are different. Also, this function seize the
1035 * memory ownership of "data", so we don't have to allocate and copy the buffer.
1037 int rom_add_elf_program(const char *name, void *data, size_t datasize,
1038 size_t romsize, hwaddr addr, AddressSpace *as)
1042 rom = g_malloc0(sizeof(*rom));
1043 rom->name = g_strdup(name);
1045 rom->datasize = datasize;
1046 rom->romsize = romsize;
1053 int rom_add_vga(const char *file)
1055 return rom_add_file(file, "vgaroms", 0, -1, true, NULL, NULL);
1058 int rom_add_option(const char *file, int32_t bootindex)
1060 return rom_add_file(file, "genroms", 0, bootindex, true, NULL, NULL);
1063 static void rom_reset(void *unused)
1067 QTAILQ_FOREACH(rom, &roms, next) {
1071 if (rom->data == NULL) {
1075 void *host = memory_region_get_ram_ptr(rom->mr);
1076 memcpy(host, rom->data, rom->datasize);
1078 cpu_physical_memory_write_rom(rom->as, rom->addr, rom->data,
1082 /* rom needs to be written only once */
1087 * The rom loader is really on the same level as firmware in the guest
1088 * shadowing a ROM into RAM. Such a shadowing mechanism needs to ensure
1089 * that the instruction cache for that new region is clear, so that the
1090 * CPU definitely fetches its instructions from the just written data.
1092 cpu_flush_icache_range(rom->addr, rom->datasize);
1096 int rom_check_and_register_reset(void)
1099 MemoryRegionSection section;
1101 AddressSpace *as = NULL;
1103 QTAILQ_FOREACH(rom, &roms, next) {
1108 if ((addr > rom->addr) && (as == rom->as)) {
1109 fprintf(stderr, "rom: requested regions overlap "
1110 "(rom %s. free=0x" TARGET_FMT_plx
1111 ", addr=0x" TARGET_FMT_plx ")\n",
1112 rom->name, addr, rom->addr);
1116 addr += rom->romsize;
1119 section = memory_region_find(rom->mr ? rom->mr : get_system_memory(),
1121 rom->isrom = int128_nz(section.size) && memory_region_is_rom(section.mr);
1122 memory_region_unref(section.mr);
1124 qemu_register_reset(rom_reset, NULL);
1129 void rom_set_fw(FWCfgState *f)
1134 void rom_set_order_override(int order)
1138 fw_cfg_set_order_override(fw_cfg, order);
1141 void rom_reset_order_override(void)
1145 fw_cfg_reset_order_override(fw_cfg);
1148 static Rom *find_rom(hwaddr addr)
1152 QTAILQ_FOREACH(rom, &roms, next) {
1159 if (rom->addr > addr) {
1162 if (rom->addr + rom->romsize < addr) {
1171 * Copies memory from registered ROMs to dest. Any memory that is contained in
1172 * a ROM between addr and addr + size is copied. Note that this can involve
1173 * multiple ROMs, which need not start at addr and need not end at addr + size.
1175 int rom_copy(uint8_t *dest, hwaddr addr, size_t size)
1177 hwaddr end = addr + size;
1178 uint8_t *s, *d = dest;
1182 QTAILQ_FOREACH(rom, &roms, next) {
1189 if (rom->addr + rom->romsize < addr) {
1192 if (rom->addr > end) {
1196 d = dest + (rom->addr - addr);
1200 if ((d + l) > (dest + size)) {
1208 if (rom->romsize > rom->datasize) {
1209 /* If datasize is less than romsize, it means that we didn't
1210 * allocate all the ROM because the trailing data are only zeros.
1214 l = rom->romsize - rom->datasize;
1216 if ((d + l) > (dest + size)) {
1217 /* Rom size doesn't fit in the destination area. Adjust to avoid
1229 return (d + l) - dest;
1232 void *rom_ptr(hwaddr addr)
1236 rom = find_rom(addr);
1237 if (!rom || !rom->data)
1239 return rom->data + (addr - rom->addr);
1242 void hmp_info_roms(Monitor *mon, const QDict *qdict)
1246 QTAILQ_FOREACH(rom, &roms, next) {
1248 monitor_printf(mon, "%s"
1249 " size=0x%06zx name=\"%s\"\n",
1250 memory_region_name(rom->mr),
1253 } else if (!rom->fw_file) {
1254 monitor_printf(mon, "addr=" TARGET_FMT_plx
1255 " size=0x%06zx mem=%s name=\"%s\"\n",
1256 rom->addr, rom->romsize,
1257 rom->isrom ? "rom" : "ram",
1260 monitor_printf(mon, "fw=%s/%s"
1261 " size=0x%06zx name=\"%s\"\n",