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
29 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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 /* return the size or -1 if error */
137 int load_image_targphys(const char *filename
,
138 hwaddr addr
, uint64_t max_sz
)
142 size
= get_image_size(filename
);
147 rom_add_file_fixed(filename
, addr
, -1);
152 int load_image_mr(const char *filename
, MemoryRegion
*mr
)
156 if (!memory_access_is_direct(mr
, false)) {
157 /* Can only load an image into RAM or ROM */
161 size
= get_image_size(filename
);
163 if (size
> memory_region_size(mr
)) {
167 if (rom_add_file_mr(filename
, mr
, -1) < 0) {
174 void pstrcpy_targphys(const char *name
, hwaddr dest
, int buf_size
,
180 if (buf_size
<= 0) return;
181 nulp
= memchr(source
, 0, buf_size
);
183 rom_add_blob_fixed(name
, source
, (nulp
- source
) + 1, dest
);
185 rom_add_blob_fixed(name
, source
, buf_size
, dest
);
186 ptr
= rom_ptr(dest
+ buf_size
- 1);
195 uint32_t a_info
; /* Use macros N_MAGIC, etc for access */
196 uint32_t a_text
; /* length of text, in bytes */
197 uint32_t a_data
; /* length of data, in bytes */
198 uint32_t a_bss
; /* length of uninitialized data area, in bytes */
199 uint32_t a_syms
; /* length of symbol table data in file, in bytes */
200 uint32_t a_entry
; /* start address */
201 uint32_t a_trsize
; /* length of relocation info for text, in bytes */
202 uint32_t a_drsize
; /* length of relocation info for data, in bytes */
205 static void bswap_ahdr(struct exec
*e
)
207 bswap32s(&e
->a_info
);
208 bswap32s(&e
->a_text
);
209 bswap32s(&e
->a_data
);
211 bswap32s(&e
->a_syms
);
212 bswap32s(&e
->a_entry
);
213 bswap32s(&e
->a_trsize
);
214 bswap32s(&e
->a_drsize
);
217 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
222 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
223 #define N_TXTOFF(x) \
224 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
225 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
226 #define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
227 #define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
229 #define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
231 #define N_DATADDR(x, target_page_size) \
232 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
233 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
236 int load_aout(const char *filename
, hwaddr addr
, int max_sz
,
237 int bswap_needed
, hwaddr target_page_size
)
244 fd
= open(filename
, O_RDONLY
| O_BINARY
);
248 size
= read(fd
, &e
, sizeof(e
));
261 if (e
.a_text
+ e
.a_data
> max_sz
)
263 lseek(fd
, N_TXTOFF(e
), SEEK_SET
);
264 size
= read_targphys(filename
, fd
, addr
, e
.a_text
+ e
.a_data
);
269 if (N_DATADDR(e
, target_page_size
) + e
.a_data
> max_sz
)
271 lseek(fd
, N_TXTOFF(e
), SEEK_SET
);
272 size
= read_targphys(filename
, fd
, addr
, e
.a_text
);
275 ret
= read_targphys(filename
, fd
, addr
+ N_DATADDR(e
, target_page_size
),
293 static void *load_at(int fd
, off_t offset
, size_t size
)
296 if (lseek(fd
, offset
, SEEK_SET
) < 0)
298 ptr
= g_malloc(size
);
299 if (read(fd
, ptr
, size
) != size
) {
310 #define ELF_CLASS ELFCLASS32
314 #define elf_word uint32_t
315 #define elf_sword int32_t
316 #define bswapSZs bswap32s
317 #include "hw/elf_ops.h"
329 #define elfhdr elf64_hdr
330 #define elf_phdr elf64_phdr
331 #define elf_note elf64_note
332 #define elf_shdr elf64_shdr
333 #define elf_sym elf64_sym
334 #define elf_rela elf64_rela
335 #define elf_word uint64_t
336 #define elf_sword int64_t
337 #define bswapSZs bswap64s
339 #include "hw/elf_ops.h"
341 const char *load_elf_strerror(int error
)
346 case ELF_LOAD_FAILED
:
347 return "Failed to load ELF";
348 case ELF_LOAD_NOT_ELF
:
349 return "The image is not ELF";
350 case ELF_LOAD_WRONG_ARCH
:
351 return "The image is from incompatible architecture";
352 case ELF_LOAD_WRONG_ENDIAN
:
353 return "The image has incorrect endianness";
355 return "Unknown error";
359 void load_elf_hdr(const char *filename
, void *hdr
, bool *is64
, Error
**errp
)
362 uint8_t e_ident_local
[EI_NIDENT
];
364 size_t hdr_size
, off
;
372 fd
= open(filename
, O_RDONLY
| O_BINARY
);
374 error_setg_errno(errp
, errno
, "Failed to open file: %s", filename
);
377 if (read(fd
, hdr
, EI_NIDENT
) != EI_NIDENT
) {
378 error_setg_errno(errp
, errno
, "Failed to read file: %s", filename
);
381 if (e_ident
[0] != ELFMAG0
||
382 e_ident
[1] != ELFMAG1
||
383 e_ident
[2] != ELFMAG2
||
384 e_ident
[3] != ELFMAG3
) {
385 error_setg(errp
, "Bad ELF magic");
389 is64l
= e_ident
[EI_CLASS
] == ELFCLASS64
;
390 hdr_size
= is64l
? sizeof(Elf64_Ehdr
) : sizeof(Elf32_Ehdr
);
396 while (hdr
!= e_ident_local
&& off
< hdr_size
) {
397 size_t br
= read(fd
, hdr
+ off
, hdr_size
- off
);
400 error_setg(errp
, "File too short: %s", filename
);
403 error_setg_errno(errp
, errno
, "Failed to read file: %s",
414 /* return < 0 if error, otherwise the number of bytes loaded in memory */
415 int load_elf(const char *filename
, uint64_t (*translate_fn
)(void *, uint64_t),
416 void *translate_opaque
, uint64_t *pentry
, uint64_t *lowaddr
,
417 uint64_t *highaddr
, int big_endian
, int elf_machine
,
418 int clear_lsb
, int data_swab
)
420 int fd
, data_order
, target_data_order
, must_swab
, ret
= ELF_LOAD_FAILED
;
421 uint8_t e_ident
[EI_NIDENT
];
423 fd
= open(filename
, O_RDONLY
| O_BINARY
);
428 if (read(fd
, e_ident
, sizeof(e_ident
)) != sizeof(e_ident
))
430 if (e_ident
[0] != ELFMAG0
||
431 e_ident
[1] != ELFMAG1
||
432 e_ident
[2] != ELFMAG2
||
433 e_ident
[3] != ELFMAG3
) {
434 ret
= ELF_LOAD_NOT_ELF
;
437 #ifdef HOST_WORDS_BIGENDIAN
438 data_order
= ELFDATA2MSB
;
440 data_order
= ELFDATA2LSB
;
442 must_swab
= data_order
!= e_ident
[EI_DATA
];
444 target_data_order
= ELFDATA2MSB
;
446 target_data_order
= ELFDATA2LSB
;
449 if (target_data_order
!= e_ident
[EI_DATA
]) {
450 ret
= ELF_LOAD_WRONG_ENDIAN
;
454 lseek(fd
, 0, SEEK_SET
);
455 if (e_ident
[EI_CLASS
] == ELFCLASS64
) {
456 ret
= load_elf64(filename
, fd
, translate_fn
, translate_opaque
, must_swab
,
457 pentry
, lowaddr
, highaddr
, elf_machine
, clear_lsb
,
460 ret
= load_elf32(filename
, fd
, translate_fn
, translate_opaque
, must_swab
,
461 pentry
, lowaddr
, highaddr
, elf_machine
, clear_lsb
,
470 static void bswap_uboot_header(uboot_image_header_t
*hdr
)
472 #ifndef HOST_WORDS_BIGENDIAN
473 bswap32s(&hdr
->ih_magic
);
474 bswap32s(&hdr
->ih_hcrc
);
475 bswap32s(&hdr
->ih_time
);
476 bswap32s(&hdr
->ih_size
);
477 bswap32s(&hdr
->ih_load
);
478 bswap32s(&hdr
->ih_ep
);
479 bswap32s(&hdr
->ih_dcrc
);
484 #define ZALLOC_ALIGNMENT 16
486 static void *zalloc(void *x
, unsigned items
, unsigned size
)
491 size
= (size
+ ZALLOC_ALIGNMENT
- 1) & ~(ZALLOC_ALIGNMENT
- 1);
498 static void zfree(void *x
, void *addr
)
505 #define EXTRA_FIELD 4
508 #define RESERVED 0xe0
512 /* This is the usual maximum in uboot, so if a uImage overflows this, it would
513 * overflow on real hardware too. */
514 #define UBOOT_MAX_GUNZIP_BYTES (64 << 20)
516 static ssize_t
gunzip(void *dst
, size_t dstlen
, uint8_t *src
,
526 if (src
[2] != DEFLATED
|| (flags
& RESERVED
) != 0) {
527 puts ("Error: Bad gzipped data\n");
530 if ((flags
& EXTRA_FIELD
) != 0)
531 i
= 12 + src
[10] + (src
[11] << 8);
532 if ((flags
& ORIG_NAME
) != 0)
533 while (src
[i
++] != 0)
535 if ((flags
& COMMENT
) != 0)
536 while (src
[i
++] != 0)
538 if ((flags
& HEAD_CRC
) != 0)
541 puts ("Error: gunzip out of data in header\n");
548 r
= inflateInit2(&s
, -MAX_WBITS
);
550 printf ("Error: inflateInit2() returned %d\n", r
);
554 s
.avail_in
= srclen
- i
;
556 s
.avail_out
= dstlen
;
557 r
= inflate(&s
, Z_FINISH
);
558 if (r
!= Z_OK
&& r
!= Z_STREAM_END
) {
559 printf ("Error: inflate() returned %d\n", r
);
562 dstbytes
= s
.next_out
- (unsigned char *) dst
;
568 /* Load a U-Boot image. */
569 static int load_uboot_image(const char *filename
, hwaddr
*ep
, hwaddr
*loadaddr
,
570 int *is_linux
, uint8_t image_type
,
571 uint64_t (*translate_fn
)(void *, uint64_t),
572 void *translate_opaque
)
577 uboot_image_header_t h
;
578 uboot_image_header_t
*hdr
= &h
;
579 uint8_t *data
= NULL
;
581 int do_uncompress
= 0;
583 fd
= open(filename
, O_RDONLY
| O_BINARY
);
587 size
= read(fd
, hdr
, sizeof(uboot_image_header_t
));
591 bswap_uboot_header(hdr
);
593 if (hdr
->ih_magic
!= IH_MAGIC
)
596 if (hdr
->ih_type
!= image_type
) {
597 fprintf(stderr
, "Wrong image type %d, expected %d\n", hdr
->ih_type
,
602 /* TODO: Implement other image types. */
603 switch (hdr
->ih_type
) {
605 address
= hdr
->ih_load
;
607 address
= translate_fn(translate_opaque
, address
);
610 *loadaddr
= hdr
->ih_load
;
613 switch (hdr
->ih_comp
) {
621 "Unable to load u-boot images with compression type %d\n",
630 /* TODO: Check CPU type. */
632 if (hdr
->ih_os
== IH_OS_LINUX
) {
640 case IH_TYPE_RAMDISK
:
644 fprintf(stderr
, "Unsupported u-boot image type %d\n", hdr
->ih_type
);
648 data
= g_malloc(hdr
->ih_size
);
650 if (read(fd
, data
, hdr
->ih_size
) != hdr
->ih_size
) {
651 fprintf(stderr
, "Error reading file\n");
656 uint8_t *compressed_data
;
660 compressed_data
= data
;
661 max_bytes
= UBOOT_MAX_GUNZIP_BYTES
;
662 data
= g_malloc(max_bytes
);
664 bytes
= gunzip(data
, max_bytes
, compressed_data
, hdr
->ih_size
);
665 g_free(compressed_data
);
667 fprintf(stderr
, "Unable to decompress gzipped image!\n");
670 hdr
->ih_size
= bytes
;
673 rom_add_blob_fixed(filename
, data
, hdr
->ih_size
, address
);
683 int load_uimage(const char *filename
, hwaddr
*ep
, hwaddr
*loadaddr
,
685 uint64_t (*translate_fn
)(void *, uint64_t),
686 void *translate_opaque
)
688 return load_uboot_image(filename
, ep
, loadaddr
, is_linux
, IH_TYPE_KERNEL
,
689 translate_fn
, translate_opaque
);
692 /* Load a ramdisk. */
693 int load_ramdisk(const char *filename
, hwaddr addr
, uint64_t max_sz
)
695 return load_uboot_image(filename
, NULL
, &addr
, NULL
, IH_TYPE_RAMDISK
,
699 /* Load a gzip-compressed kernel to a dynamically allocated buffer. */
700 int load_image_gzipped_buffer(const char *filename
, uint64_t max_sz
,
703 uint8_t *compressed_data
= NULL
;
704 uint8_t *data
= NULL
;
709 if (!g_file_get_contents(filename
, (char **) &compressed_data
, &len
,
714 /* Is it a gzip-compressed file? */
716 compressed_data
[0] != 0x1f ||
717 compressed_data
[1] != 0x8b) {
721 if (max_sz
> LOAD_IMAGE_MAX_GUNZIP_BYTES
) {
722 max_sz
= LOAD_IMAGE_MAX_GUNZIP_BYTES
;
725 data
= g_malloc(max_sz
);
726 bytes
= gunzip(data
, max_sz
, compressed_data
, len
);
728 fprintf(stderr
, "%s: unable to decompress gzipped kernel file\n",
733 /* trim to actual size and return to caller */
734 *buffer
= g_realloc(data
, bytes
);
736 /* ownership has been transferred to caller */
740 g_free(compressed_data
);
745 /* Load a gzip-compressed kernel. */
746 int load_image_gzipped(const char *filename
, hwaddr addr
, uint64_t max_sz
)
751 bytes
= load_image_gzipped_buffer(filename
, max_sz
, &data
);
753 rom_add_blob_fixed(filename
, data
, bytes
, addr
);
760 * Functions for reboot-persistent memory regions.
761 * - used for vga bios and option roms.
762 * - also linux kernel (-kernel / -initrd).
765 typedef struct Rom Rom
;
771 /* datasize is the amount of memory allocated in "data". If datasize is less
772 * than romsize, it means that the area from datasize to romsize is filled
785 QTAILQ_ENTRY(Rom
) next
;
788 static FWCfgState
*fw_cfg
;
789 static QTAILQ_HEAD(, Rom
) roms
= QTAILQ_HEAD_INITIALIZER(roms
);
791 static void rom_insert(Rom
*rom
)
796 hw_error ("ROM images must be loaded at startup\n");
799 /* list is ordered by load address */
800 QTAILQ_FOREACH(item
, &roms
, next
) {
801 if (rom
->addr
>= item
->addr
)
803 QTAILQ_INSERT_BEFORE(item
, rom
, next
);
806 QTAILQ_INSERT_TAIL(&roms
, rom
, next
);
809 static void fw_cfg_resized(const char *id
, uint64_t length
, void *host
)
812 fw_cfg_modify_file(fw_cfg
, id
+ strlen("/rom@"), host
, length
);
816 static void *rom_set_mr(Rom
*rom
, Object
*owner
, const char *name
)
820 rom
->mr
= g_malloc(sizeof(*rom
->mr
));
821 memory_region_init_resizeable_ram(rom
->mr
, owner
, name
,
822 rom
->datasize
, rom
->romsize
,
825 memory_region_set_readonly(rom
->mr
, true);
826 vmstate_register_ram_global(rom
->mr
);
828 data
= memory_region_get_ram_ptr(rom
->mr
);
829 memcpy(data
, rom
->data
, rom
->datasize
);
834 int rom_add_file(const char *file
, const char *fw_dir
,
835 hwaddr addr
, int32_t bootindex
,
836 bool option_rom
, MemoryRegion
*mr
)
838 MachineClass
*mc
= MACHINE_GET_CLASS(qdev_get_machine());
843 rom
= g_malloc0(sizeof(*rom
));
844 rom
->name
= g_strdup(file
);
845 rom
->path
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, rom
->name
);
846 if (rom
->path
== NULL
) {
847 rom
->path
= g_strdup(file
);
850 fd
= open(rom
->path
, O_RDONLY
| O_BINARY
);
852 fprintf(stderr
, "Could not open option rom '%s': %s\n",
853 rom
->path
, strerror(errno
));
858 rom
->fw_dir
= g_strdup(fw_dir
);
859 rom
->fw_file
= g_strdup(file
);
862 rom
->romsize
= lseek(fd
, 0, SEEK_END
);
863 if (rom
->romsize
== -1) {
864 fprintf(stderr
, "rom: file %-20s: get size error: %s\n",
865 rom
->name
, strerror(errno
));
869 rom
->datasize
= rom
->romsize
;
870 rom
->data
= g_malloc0(rom
->datasize
);
871 lseek(fd
, 0, SEEK_SET
);
872 rc
= read(fd
, rom
->data
, rom
->datasize
);
873 if (rc
!= rom
->datasize
) {
874 fprintf(stderr
, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
875 rom
->name
, rc
, rom
->datasize
);
880 if (rom
->fw_file
&& fw_cfg
) {
881 const char *basename
;
882 char fw_file_name
[FW_CFG_MAX_FILE_PATH
];
885 basename
= strrchr(rom
->fw_file
, '/');
889 basename
= rom
->fw_file
;
891 snprintf(fw_file_name
, sizeof(fw_file_name
), "%s/%s", rom
->fw_dir
,
893 snprintf(devpath
, sizeof(devpath
), "/rom@%s", fw_file_name
);
895 if ((!option_rom
|| mc
->option_rom_has_mr
) && mc
->rom_file_has_mr
) {
896 data
= rom_set_mr(rom
, OBJECT(fw_cfg
), devpath
);
901 fw_cfg_add_file(fw_cfg
, fw_file_name
, data
, rom
->romsize
);
905 snprintf(devpath
, sizeof(devpath
), "/rom@%s", file
);
907 snprintf(devpath
, sizeof(devpath
), "/rom@" TARGET_FMT_plx
, addr
);
911 add_boot_device_path(bootindex
, NULL
, devpath
);
924 MemoryRegion
*rom_add_blob(const char *name
, const void *blob
, size_t len
,
925 size_t max_len
, hwaddr addr
, const char *fw_file_name
,
926 FWCfgReadCallback fw_callback
, void *callback_opaque
)
928 MachineClass
*mc
= MACHINE_GET_CLASS(qdev_get_machine());
930 MemoryRegion
*mr
= NULL
;
932 rom
= g_malloc0(sizeof(*rom
));
933 rom
->name
= g_strdup(name
);
935 rom
->romsize
= max_len
? max_len
: len
;
937 rom
->data
= g_malloc0(rom
->datasize
);
938 memcpy(rom
->data
, blob
, len
);
940 if (fw_file_name
&& fw_cfg
) {
944 snprintf(devpath
, sizeof(devpath
), "/rom@%s", fw_file_name
);
946 if (mc
->rom_file_has_mr
) {
947 data
= rom_set_mr(rom
, OBJECT(fw_cfg
), devpath
);
953 fw_cfg_add_file_callback(fw_cfg
, fw_file_name
,
954 fw_callback
, callback_opaque
,
955 data
, rom
->datasize
);
960 /* This function is specific for elf program because we don't need to allocate
961 * all the rom. We just allocate the first part and the rest is just zeros. This
962 * is why romsize and datasize are different. Also, this function seize the
963 * memory ownership of "data", so we don't have to allocate and copy the buffer.
965 int rom_add_elf_program(const char *name
, void *data
, size_t datasize
,
966 size_t romsize
, hwaddr addr
)
970 rom
= g_malloc0(sizeof(*rom
));
971 rom
->name
= g_strdup(name
);
973 rom
->datasize
= datasize
;
974 rom
->romsize
= romsize
;
980 int rom_add_vga(const char *file
)
982 return rom_add_file(file
, "vgaroms", 0, -1, true, NULL
);
985 int rom_add_option(const char *file
, int32_t bootindex
)
987 return rom_add_file(file
, "genroms", 0, bootindex
, true, NULL
);
990 static void rom_reset(void *unused
)
994 QTAILQ_FOREACH(rom
, &roms
, next
) {
998 if (rom
->data
== NULL
) {
1002 void *host
= memory_region_get_ram_ptr(rom
->mr
);
1003 memcpy(host
, rom
->data
, rom
->datasize
);
1005 cpu_physical_memory_write_rom(&address_space_memory
,
1006 rom
->addr
, rom
->data
, rom
->datasize
);
1009 /* rom needs to be written only once */
1014 * The rom loader is really on the same level as firmware in the guest
1015 * shadowing a ROM into RAM. Such a shadowing mechanism needs to ensure
1016 * that the instruction cache for that new region is clear, so that the
1017 * CPU definitely fetches its instructions from the just written data.
1019 cpu_flush_icache_range(rom
->addr
, rom
->datasize
);
1023 int rom_check_and_register_reset(void)
1026 MemoryRegionSection section
;
1029 QTAILQ_FOREACH(rom
, &roms
, next
) {
1033 if (addr
> rom
->addr
) {
1034 fprintf(stderr
, "rom: requested regions overlap "
1035 "(rom %s. free=0x" TARGET_FMT_plx
1036 ", addr=0x" TARGET_FMT_plx
")\n",
1037 rom
->name
, addr
, rom
->addr
);
1041 addr
+= rom
->romsize
;
1042 section
= memory_region_find(get_system_memory(), rom
->addr
, 1);
1043 rom
->isrom
= int128_nz(section
.size
) && memory_region_is_rom(section
.mr
);
1044 memory_region_unref(section
.mr
);
1046 qemu_register_reset(rom_reset
, NULL
);
1051 void rom_set_fw(FWCfgState
*f
)
1056 void rom_set_order_override(int order
)
1060 fw_cfg_set_order_override(fw_cfg
, order
);
1063 void rom_reset_order_override(void)
1067 fw_cfg_reset_order_override(fw_cfg
);
1070 static Rom
*find_rom(hwaddr addr
)
1074 QTAILQ_FOREACH(rom
, &roms
, next
) {
1081 if (rom
->addr
> addr
) {
1084 if (rom
->addr
+ rom
->romsize
< addr
) {
1093 * Copies memory from registered ROMs to dest. Any memory that is contained in
1094 * a ROM between addr and addr + size is copied. Note that this can involve
1095 * multiple ROMs, which need not start at addr and need not end at addr + size.
1097 int rom_copy(uint8_t *dest
, hwaddr addr
, size_t size
)
1099 hwaddr end
= addr
+ size
;
1100 uint8_t *s
, *d
= dest
;
1104 QTAILQ_FOREACH(rom
, &roms
, next
) {
1111 if (rom
->addr
+ rom
->romsize
< addr
) {
1114 if (rom
->addr
> end
) {
1118 d
= dest
+ (rom
->addr
- addr
);
1122 if ((d
+ l
) > (dest
+ size
)) {
1130 if (rom
->romsize
> rom
->datasize
) {
1131 /* If datasize is less than romsize, it means that we didn't
1132 * allocate all the ROM because the trailing data are only zeros.
1136 l
= rom
->romsize
- rom
->datasize
;
1138 if ((d
+ l
) > (dest
+ size
)) {
1139 /* Rom size doesn't fit in the destination area. Adjust to avoid
1151 return (d
+ l
) - dest
;
1154 void *rom_ptr(hwaddr addr
)
1158 rom
= find_rom(addr
);
1159 if (!rom
|| !rom
->data
)
1161 return rom
->data
+ (addr
- rom
->addr
);
1164 void hmp_info_roms(Monitor
*mon
, const QDict
*qdict
)
1168 QTAILQ_FOREACH(rom
, &roms
, next
) {
1170 monitor_printf(mon
, "%s"
1171 " size=0x%06zx name=\"%s\"\n",
1172 memory_region_name(rom
->mr
),
1175 } else if (!rom
->fw_file
) {
1176 monitor_printf(mon
, "addr=" TARGET_FMT_plx
1177 " size=0x%06zx mem=%s name=\"%s\"\n",
1178 rom
->addr
, rom
->romsize
,
1179 rom
->isrom
? "rom" : "ram",
1182 monitor_printf(mon
, "fw=%s/%s"
1183 " size=0x%06zx name=\"%s\"\n",