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);
153 rom_add_file_fixed_as(filename, addr, -1, as);
158 int load_image_mr(const char *filename, MemoryRegion *mr)
162 if (!memory_access_is_direct(mr, false)) {
163 /* Can only load an image into RAM or ROM */
167 size = get_image_size(filename);
169 if (size > memory_region_size(mr)) {
173 if (rom_add_file_mr(filename, mr, -1) < 0) {
180 void pstrcpy_targphys(const char *name, hwaddr dest, int buf_size,
186 if (buf_size <= 0) return;
187 nulp = memchr(source, 0, buf_size);
189 rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
191 rom_add_blob_fixed(name, source, buf_size, dest);
192 ptr = rom_ptr(dest + buf_size - 1);
201 uint32_t a_info; /* Use macros N_MAGIC, etc for access */
202 uint32_t a_text; /* length of text, in bytes */
203 uint32_t a_data; /* length of data, in bytes */
204 uint32_t a_bss; /* length of uninitialized data area, in bytes */
205 uint32_t a_syms; /* length of symbol table data in file, in bytes */
206 uint32_t a_entry; /* start address */
207 uint32_t a_trsize; /* length of relocation info for text, in bytes */
208 uint32_t a_drsize; /* length of relocation info for data, in bytes */
211 static void bswap_ahdr(struct exec *e)
213 bswap32s(&e->a_info);
214 bswap32s(&e->a_text);
215 bswap32s(&e->a_data);
217 bswap32s(&e->a_syms);
218 bswap32s(&e->a_entry);
219 bswap32s(&e->a_trsize);
220 bswap32s(&e->a_drsize);
223 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
228 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
229 #define N_TXTOFF(x) \
230 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
231 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
232 #define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
233 #define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
235 #define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
237 #define N_DATADDR(x, target_page_size) \
238 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
239 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
242 int load_aout(const char *filename, hwaddr addr, int max_sz,
243 int bswap_needed, hwaddr target_page_size)
250 fd = open(filename, O_RDONLY | O_BINARY);
254 size = read(fd, &e, sizeof(e));
267 if (e.a_text + e.a_data > max_sz)
269 lseek(fd, N_TXTOFF(e), SEEK_SET);
270 size = read_targphys(filename, fd, addr, e.a_text + e.a_data);
275 if (N_DATADDR(e, target_page_size) + e.a_data > max_sz)
277 lseek(fd, N_TXTOFF(e), SEEK_SET);
278 size = read_targphys(filename, fd, addr, e.a_text);
281 ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size),
299 static void *load_at(int fd, off_t offset, size_t size)
302 if (lseek(fd, offset, SEEK_SET) < 0)
304 ptr = g_malloc(size);
305 if (read(fd, ptr, size) != size) {
316 #define ELF_CLASS ELFCLASS32
320 #define elf_word uint32_t
321 #define elf_sword int32_t
322 #define bswapSZs bswap32s
323 #include "hw/elf_ops.h"
335 #define elfhdr elf64_hdr
336 #define elf_phdr elf64_phdr
337 #define elf_note elf64_note
338 #define elf_shdr elf64_shdr
339 #define elf_sym elf64_sym
340 #define elf_rela elf64_rela
341 #define elf_word uint64_t
342 #define elf_sword int64_t
343 #define bswapSZs bswap64s
345 #include "hw/elf_ops.h"
347 const char *load_elf_strerror(int error)
352 case ELF_LOAD_FAILED:
353 return "Failed to load ELF";
354 case ELF_LOAD_NOT_ELF:
355 return "The image is not ELF";
356 case ELF_LOAD_WRONG_ARCH:
357 return "The image is from incompatible architecture";
358 case ELF_LOAD_WRONG_ENDIAN:
359 return "The image has incorrect endianness";
361 return "Unknown error";
365 void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp)
368 uint8_t e_ident_local[EI_NIDENT];
370 size_t hdr_size, off;
378 fd = open(filename, O_RDONLY | O_BINARY);
380 error_setg_errno(errp, errno, "Failed to open file: %s", filename);
383 if (read(fd, hdr, EI_NIDENT) != EI_NIDENT) {
384 error_setg_errno(errp, errno, "Failed to read file: %s", filename);
387 if (e_ident[0] != ELFMAG0 ||
388 e_ident[1] != ELFMAG1 ||
389 e_ident[2] != ELFMAG2 ||
390 e_ident[3] != ELFMAG3) {
391 error_setg(errp, "Bad ELF magic");
395 is64l = e_ident[EI_CLASS] == ELFCLASS64;
396 hdr_size = is64l ? sizeof(Elf64_Ehdr) : sizeof(Elf32_Ehdr);
402 while (hdr != e_ident_local && off < hdr_size) {
403 size_t br = read(fd, hdr + off, hdr_size - off);
406 error_setg(errp, "File too short: %s", filename);
409 error_setg_errno(errp, errno, "Failed to read file: %s",
420 /* return < 0 if error, otherwise the number of bytes loaded in memory */
421 int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t),
422 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
423 uint64_t *highaddr, int big_endian, int elf_machine,
424 int clear_lsb, int data_swab)
426 return load_elf_as(filename, translate_fn, translate_opaque, pentry,
427 lowaddr, highaddr, big_endian, elf_machine, clear_lsb,
431 /* return < 0 if error, otherwise the number of bytes loaded in memory */
432 int load_elf_as(const char *filename,
433 uint64_t (*translate_fn)(void *, uint64_t),
434 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
435 uint64_t *highaddr, int big_endian, int elf_machine,
436 int clear_lsb, int data_swab, AddressSpace *as)
438 return load_elf_ram(filename, translate_fn, translate_opaque,
439 pentry, lowaddr, highaddr, big_endian, elf_machine,
440 clear_lsb, data_swab, as, true);
443 /* return < 0 if error, otherwise the number of bytes loaded in memory */
444 int load_elf_ram(const char *filename,
445 uint64_t (*translate_fn)(void *, uint64_t),
446 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
447 uint64_t *highaddr, int big_endian, int elf_machine,
448 int clear_lsb, int data_swab, AddressSpace *as,
451 int fd, data_order, target_data_order, must_swab, ret = ELF_LOAD_FAILED;
452 uint8_t e_ident[EI_NIDENT];
454 fd = open(filename, O_RDONLY | O_BINARY);
459 if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
461 if (e_ident[0] != ELFMAG0 ||
462 e_ident[1] != ELFMAG1 ||
463 e_ident[2] != ELFMAG2 ||
464 e_ident[3] != ELFMAG3) {
465 ret = ELF_LOAD_NOT_ELF;
468 #ifdef HOST_WORDS_BIGENDIAN
469 data_order = ELFDATA2MSB;
471 data_order = ELFDATA2LSB;
473 must_swab = data_order != e_ident[EI_DATA];
475 target_data_order = ELFDATA2MSB;
477 target_data_order = ELFDATA2LSB;
480 if (target_data_order != e_ident[EI_DATA]) {
481 ret = ELF_LOAD_WRONG_ENDIAN;
485 lseek(fd, 0, SEEK_SET);
486 if (e_ident[EI_CLASS] == ELFCLASS64) {
487 ret = load_elf64(filename, fd, translate_fn, translate_opaque, must_swab,
488 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
489 data_swab, as, load_rom);
491 ret = load_elf32(filename, fd, translate_fn, translate_opaque, must_swab,
492 pentry, lowaddr, highaddr, elf_machine, clear_lsb,
493 data_swab, as, load_rom);
501 static void bswap_uboot_header(uboot_image_header_t *hdr)
503 #ifndef HOST_WORDS_BIGENDIAN
504 bswap32s(&hdr->ih_magic);
505 bswap32s(&hdr->ih_hcrc);
506 bswap32s(&hdr->ih_time);
507 bswap32s(&hdr->ih_size);
508 bswap32s(&hdr->ih_load);
509 bswap32s(&hdr->ih_ep);
510 bswap32s(&hdr->ih_dcrc);
515 #define ZALLOC_ALIGNMENT 16
517 static void *zalloc(void *x, unsigned items, unsigned size)
522 size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
529 static void zfree(void *x, void *addr)
536 #define EXTRA_FIELD 4
539 #define RESERVED 0xe0
543 ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen)
552 if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
553 puts ("Error: Bad gzipped data\n");
556 if ((flags & EXTRA_FIELD) != 0)
557 i = 12 + src[10] + (src[11] << 8);
558 if ((flags & ORIG_NAME) != 0)
559 while (src[i++] != 0)
561 if ((flags & COMMENT) != 0)
562 while (src[i++] != 0)
564 if ((flags & HEAD_CRC) != 0)
567 puts ("Error: gunzip out of data in header\n");
574 r = inflateInit2(&s, -MAX_WBITS);
576 printf ("Error: inflateInit2() returned %d\n", r);
580 s.avail_in = srclen - i;
582 s.avail_out = dstlen;
583 r = inflate(&s, Z_FINISH);
584 if (r != Z_OK && r != Z_STREAM_END) {
585 printf ("Error: inflate() returned %d\n", r);
588 dstbytes = s.next_out - (unsigned char *) dst;
594 /* Load a U-Boot image. */
595 static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr,
596 int *is_linux, uint8_t image_type,
597 uint64_t (*translate_fn)(void *, uint64_t),
598 void *translate_opaque, AddressSpace *as)
603 uboot_image_header_t h;
604 uboot_image_header_t *hdr = &h;
605 uint8_t *data = NULL;
607 int do_uncompress = 0;
609 fd = open(filename, O_RDONLY | O_BINARY);
613 size = read(fd, hdr, 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 fprintf(stderr, "Wrong image type %d, expected %d\n", hdr->ih_type,
628 /* TODO: Implement other image types. */
629 switch (hdr->ih_type) {
631 address = hdr->ih_load;
633 address = translate_fn(translate_opaque, address);
636 *loadaddr = hdr->ih_load;
639 switch (hdr->ih_comp) {
647 "Unable to load u-boot images with compression type %d\n",
656 /* TODO: Check CPU type. */
658 if (hdr->ih_os == IH_OS_LINUX) {
666 case IH_TYPE_RAMDISK:
670 fprintf(stderr, "Unsupported u-boot image type %d\n", hdr->ih_type);
674 data = g_malloc(hdr->ih_size);
676 if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
677 fprintf(stderr, "Error reading file\n");
682 uint8_t *compressed_data;
686 compressed_data = data;
687 max_bytes = UBOOT_MAX_GUNZIP_BYTES;
688 data = g_malloc(max_bytes);
690 bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
691 g_free(compressed_data);
693 fprintf(stderr, "Unable to decompress gzipped image!\n");
696 hdr->ih_size = bytes;
699 rom_add_blob_fixed_as(filename, data, hdr->ih_size, address, as);
709 int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr,
711 uint64_t (*translate_fn)(void *, uint64_t),
712 void *translate_opaque)
714 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
715 translate_fn, translate_opaque, NULL);
718 int load_uimage_as(const char *filename, hwaddr *ep, hwaddr *loadaddr,
720 uint64_t (*translate_fn)(void *, uint64_t),
721 void *translate_opaque, AddressSpace *as)
723 return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL,
724 translate_fn, translate_opaque, as);
727 /* Load a ramdisk. */
728 int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz)
730 return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK,
734 /* Load a gzip-compressed kernel to a dynamically allocated buffer. */
735 int load_image_gzipped_buffer(const char *filename, uint64_t max_sz,
738 uint8_t *compressed_data = NULL;
739 uint8_t *data = NULL;
744 if (!g_file_get_contents(filename, (char **) &compressed_data, &len,
749 /* Is it a gzip-compressed file? */
751 compressed_data[0] != 0x1f ||
752 compressed_data[1] != 0x8b) {
756 if (max_sz > LOAD_IMAGE_MAX_GUNZIP_BYTES) {
757 max_sz = LOAD_IMAGE_MAX_GUNZIP_BYTES;
760 data = g_malloc(max_sz);
761 bytes = gunzip(data, max_sz, compressed_data, len);
763 fprintf(stderr, "%s: unable to decompress gzipped kernel file\n",
768 /* trim to actual size and return to caller */
769 *buffer = g_realloc(data, bytes);
771 /* ownership has been transferred to caller */
775 g_free(compressed_data);
780 /* Load a gzip-compressed kernel. */
781 int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz)
786 bytes = load_image_gzipped_buffer(filename, max_sz, &data);
788 rom_add_blob_fixed(filename, data, bytes, addr);
795 * Functions for reboot-persistent memory regions.
796 * - used for vga bios and option roms.
797 * - also linux kernel (-kernel / -initrd).
800 typedef struct Rom Rom;
806 /* datasize is the amount of memory allocated in "data". If datasize is less
807 * than romsize, it means that the area from datasize to romsize is filled
821 QTAILQ_ENTRY(Rom) next;
824 static FWCfgState *fw_cfg;
825 static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
827 static inline bool rom_order_compare(Rom *rom, Rom *item)
829 return ((uintptr_t)(void *)rom->as > (uintptr_t)(void *)item->as) ||
830 (rom->as == item->as && rom->addr >= item->addr);
833 static void rom_insert(Rom *rom)
838 hw_error ("ROM images must be loaded at startup\n");
841 /* The user didn't specify an address space, this is the default */
843 rom->as = &address_space_memory;
846 /* List is ordered by load address in the same address space */
847 QTAILQ_FOREACH(item, &roms, next) {
848 if (rom_order_compare(rom, item)) {
851 QTAILQ_INSERT_BEFORE(item, rom, next);
854 QTAILQ_INSERT_TAIL(&roms, rom, next);
857 static void fw_cfg_resized(const char *id, uint64_t length, void *host)
860 fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length);
864 static void *rom_set_mr(Rom *rom, Object *owner, const char *name, bool ro)
868 rom->mr = g_malloc(sizeof(*rom->mr));
869 memory_region_init_resizeable_ram(rom->mr, owner, name,
870 rom->datasize, rom->romsize,
873 memory_region_set_readonly(rom->mr, ro);
874 vmstate_register_ram_global(rom->mr);
876 data = memory_region_get_ram_ptr(rom->mr);
877 memcpy(data, rom->data, rom->datasize);
882 int rom_add_file(const char *file, const char *fw_dir,
883 hwaddr addr, int32_t bootindex,
884 bool option_rom, MemoryRegion *mr,
887 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
893 fprintf(stderr, "Specifying an Address Space and Memory Region is " \
894 "not valid when loading a rom\n");
895 /* We haven't allocated anything so we don't need any cleanup */
899 rom = g_malloc0(sizeof(*rom));
900 rom->name = g_strdup(file);
901 rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
903 if (rom->path == NULL) {
904 rom->path = g_strdup(file);
907 fd = open(rom->path, O_RDONLY | O_BINARY);
909 fprintf(stderr, "Could not open option rom '%s': %s\n",
910 rom->path, strerror(errno));
915 rom->fw_dir = g_strdup(fw_dir);
916 rom->fw_file = g_strdup(file);
919 rom->romsize = lseek(fd, 0, SEEK_END);
920 if (rom->romsize == -1) {
921 fprintf(stderr, "rom: file %-20s: get size error: %s\n",
922 rom->name, strerror(errno));
926 rom->datasize = rom->romsize;
927 rom->data = g_malloc0(rom->datasize);
928 lseek(fd, 0, SEEK_SET);
929 rc = read(fd, rom->data, rom->datasize);
930 if (rc != rom->datasize) {
931 fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
932 rom->name, rc, rom->datasize);
937 if (rom->fw_file && fw_cfg) {
938 const char *basename;
939 char fw_file_name[FW_CFG_MAX_FILE_PATH];
942 basename = strrchr(rom->fw_file, '/');
946 basename = rom->fw_file;
948 snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir,
950 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
952 if ((!option_rom || mc->option_rom_has_mr) && mc->rom_file_has_mr) {
953 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, true);
958 fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize);
962 snprintf(devpath, sizeof(devpath), "/rom@%s", file);
964 snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr);
968 add_boot_device_path(bootindex, NULL, devpath);
980 g_free(rom->fw_file);
987 MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
988 size_t max_len, hwaddr addr, const char *fw_file_name,
989 FWCfgReadCallback fw_callback, void *callback_opaque,
990 AddressSpace *as, bool read_only)
992 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
994 MemoryRegion *mr = NULL;
996 rom = g_malloc0(sizeof(*rom));
997 rom->name = g_strdup(name);
1000 rom->romsize = max_len ? max_len : len;
1001 rom->datasize = len;
1002 rom->data = g_malloc0(rom->datasize);
1003 memcpy(rom->data, blob, len);
1005 if (fw_file_name && fw_cfg) {
1010 snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name);
1012 snprintf(devpath, sizeof(devpath), "/ram@%s", fw_file_name);
1015 if (mc->rom_file_has_mr) {
1016 data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, read_only);
1022 fw_cfg_add_file_callback(fw_cfg, fw_file_name,
1023 fw_callback, callback_opaque,
1024 data, rom->datasize, read_only);
1029 /* This function is specific for elf program because we don't need to allocate
1030 * all the rom. We just allocate the first part and the rest is just zeros. This
1031 * is why romsize and datasize are different. Also, this function seize the
1032 * memory ownership of "data", so we don't have to allocate and copy the buffer.
1034 int rom_add_elf_program(const char *name, void *data, size_t datasize,
1035 size_t romsize, hwaddr addr, AddressSpace *as)
1039 rom = g_malloc0(sizeof(*rom));
1040 rom->name = g_strdup(name);
1042 rom->datasize = datasize;
1043 rom->romsize = romsize;
1050 int rom_add_vga(const char *file)
1052 return rom_add_file(file, "vgaroms", 0, -1, true, NULL, NULL);
1055 int rom_add_option(const char *file, int32_t bootindex)
1057 return rom_add_file(file, "genroms", 0, bootindex, true, NULL, NULL);
1060 static void rom_reset(void *unused)
1064 QTAILQ_FOREACH(rom, &roms, next) {
1068 if (rom->data == NULL) {
1072 void *host = memory_region_get_ram_ptr(rom->mr);
1073 memcpy(host, rom->data, rom->datasize);
1075 cpu_physical_memory_write_rom(rom->as, rom->addr, rom->data,
1079 /* rom needs to be written only once */
1084 * The rom loader is really on the same level as firmware in the guest
1085 * shadowing a ROM into RAM. Such a shadowing mechanism needs to ensure
1086 * that the instruction cache for that new region is clear, so that the
1087 * CPU definitely fetches its instructions from the just written data.
1089 cpu_flush_icache_range(rom->addr, rom->datasize);
1093 int rom_check_and_register_reset(void)
1096 MemoryRegionSection section;
1098 AddressSpace *as = NULL;
1100 QTAILQ_FOREACH(rom, &roms, next) {
1104 if ((addr > rom->addr) && (as == rom->as)) {
1105 fprintf(stderr, "rom: requested regions overlap "
1106 "(rom %s. free=0x" TARGET_FMT_plx
1107 ", addr=0x" TARGET_FMT_plx ")\n",
1108 rom->name, addr, rom->addr);
1112 addr += rom->romsize;
1113 section = memory_region_find(rom->mr ? rom->mr : get_system_memory(),
1115 rom->isrom = int128_nz(section.size) && memory_region_is_rom(section.mr);
1116 memory_region_unref(section.mr);
1119 qemu_register_reset(rom_reset, NULL);
1124 void rom_set_fw(FWCfgState *f)
1129 void rom_set_order_override(int order)
1133 fw_cfg_set_order_override(fw_cfg, order);
1136 void rom_reset_order_override(void)
1140 fw_cfg_reset_order_override(fw_cfg);
1143 static Rom *find_rom(hwaddr addr)
1147 QTAILQ_FOREACH(rom, &roms, next) {
1154 if (rom->addr > addr) {
1157 if (rom->addr + rom->romsize < addr) {
1166 * Copies memory from registered ROMs to dest. Any memory that is contained in
1167 * a ROM between addr and addr + size is copied. Note that this can involve
1168 * multiple ROMs, which need not start at addr and need not end at addr + size.
1170 int rom_copy(uint8_t *dest, hwaddr addr, size_t size)
1172 hwaddr end = addr + size;
1173 uint8_t *s, *d = dest;
1177 QTAILQ_FOREACH(rom, &roms, next) {
1184 if (rom->addr + rom->romsize < addr) {
1187 if (rom->addr > end) {
1191 d = dest + (rom->addr - addr);
1195 if ((d + l) > (dest + size)) {
1203 if (rom->romsize > rom->datasize) {
1204 /* If datasize is less than romsize, it means that we didn't
1205 * allocate all the ROM because the trailing data are only zeros.
1209 l = rom->romsize - rom->datasize;
1211 if ((d + l) > (dest + size)) {
1212 /* Rom size doesn't fit in the destination area. Adjust to avoid
1224 return (d + l) - dest;
1227 void *rom_ptr(hwaddr addr)
1231 rom = find_rom(addr);
1232 if (!rom || !rom->data)
1234 return rom->data + (addr - rom->addr);
1237 void hmp_info_roms(Monitor *mon, const QDict *qdict)
1241 QTAILQ_FOREACH(rom, &roms, next) {
1243 monitor_printf(mon, "%s"
1244 " size=0x%06zx name=\"%s\"\n",
1245 memory_region_name(rom->mr),
1248 } else if (!rom->fw_file) {
1249 monitor_printf(mon, "addr=" TARGET_FMT_plx
1250 " size=0x%06zx mem=%s name=\"%s\"\n",
1251 rom->addr, rom->romsize,
1252 rom->isrom ? "rom" : "ram",
1255 monitor_printf(mon, "fw=%s/%s"
1256 " size=0x%06zx name=\"%s\"\n",