| /* |
| * QEMU Executable loader |
| * |
| * Copyright (c) 2006 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| * |
| * Gunzip functionality in this file is derived from u-boot: |
| * |
| * (C) Copyright 2008 Semihalf |
| * |
| * (C) Copyright 2000-2005 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "hw/hw.h" |
| #include "disas/disas.h" |
| #include "monitor/monitor.h" |
| #include "sysemu/sysemu.h" |
| #include "uboot_image.h" |
| #include "hw/loader.h" |
| #include "hw/nvram/fw_cfg.h" |
| #include "exec/memory.h" |
| #include "exec/address-spaces.h" |
| |
| #include <zlib.h> |
| |
| bool rom_file_in_ram = true; |
| |
| static int roms_loaded; |
| |
| /* return the size or -1 if error */ |
| int get_image_size(const char *filename) |
| { |
| int fd, size; |
| fd = open(filename, O_RDONLY | O_BINARY); |
| if (fd < 0) |
| return -1; |
| size = lseek(fd, 0, SEEK_END); |
| close(fd); |
| return size; |
| } |
| |
| /* return the size or -1 if error */ |
| /* deprecated, because caller does not specify buffer size! */ |
| int load_image(const char *filename, uint8_t *addr) |
| { |
| int fd, size; |
| fd = open(filename, O_RDONLY | O_BINARY); |
| if (fd < 0) |
| return -1; |
| size = lseek(fd, 0, SEEK_END); |
| lseek(fd, 0, SEEK_SET); |
| if (read(fd, addr, size) != size) { |
| close(fd); |
| return -1; |
| } |
| close(fd); |
| return size; |
| } |
| |
| /* read()-like version */ |
| ssize_t read_targphys(const char *name, |
| int fd, hwaddr dst_addr, size_t nbytes) |
| { |
| uint8_t *buf; |
| ssize_t did; |
| |
| buf = g_malloc(nbytes); |
| did = read(fd, buf, nbytes); |
| if (did > 0) |
| rom_add_blob_fixed("read", buf, did, dst_addr); |
| g_free(buf); |
| return did; |
| } |
| |
| /* return the size or -1 if error */ |
| int load_image_targphys(const char *filename, |
| hwaddr addr, uint64_t max_sz) |
| { |
| int size; |
| |
| size = get_image_size(filename); |
| if (size > max_sz) { |
| return -1; |
| } |
| if (size > 0) { |
| rom_add_file_fixed(filename, addr, -1); |
| } |
| return size; |
| } |
| |
| void pstrcpy_targphys(const char *name, hwaddr dest, int buf_size, |
| const char *source) |
| { |
| const char *nulp; |
| char *ptr; |
| |
| if (buf_size <= 0) return; |
| nulp = memchr(source, 0, buf_size); |
| if (nulp) { |
| rom_add_blob_fixed(name, source, (nulp - source) + 1, dest); |
| } else { |
| rom_add_blob_fixed(name, source, buf_size, dest); |
| ptr = rom_ptr(dest + buf_size - 1); |
| *ptr = 0; |
| } |
| } |
| |
| /* A.OUT loader */ |
| |
| struct exec |
| { |
| uint32_t a_info; /* Use macros N_MAGIC, etc for access */ |
| uint32_t a_text; /* length of text, in bytes */ |
| uint32_t a_data; /* length of data, in bytes */ |
| uint32_t a_bss; /* length of uninitialized data area, in bytes */ |
| uint32_t a_syms; /* length of symbol table data in file, in bytes */ |
| uint32_t a_entry; /* start address */ |
| uint32_t a_trsize; /* length of relocation info for text, in bytes */ |
| uint32_t a_drsize; /* length of relocation info for data, in bytes */ |
| }; |
| |
| static void bswap_ahdr(struct exec *e) |
| { |
| bswap32s(&e->a_info); |
| bswap32s(&e->a_text); |
| bswap32s(&e->a_data); |
| bswap32s(&e->a_bss); |
| bswap32s(&e->a_syms); |
| bswap32s(&e->a_entry); |
| bswap32s(&e->a_trsize); |
| bswap32s(&e->a_drsize); |
| } |
| |
| #define N_MAGIC(exec) ((exec).a_info & 0xffff) |
| #define OMAGIC 0407 |
| #define NMAGIC 0410 |
| #define ZMAGIC 0413 |
| #define QMAGIC 0314 |
| #define _N_HDROFF(x) (1024 - sizeof (struct exec)) |
| #define N_TXTOFF(x) \ |
| (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ |
| (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) |
| #define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0) |
| #define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1)) |
| |
| #define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text) |
| |
| #define N_DATADDR(x, target_page_size) \ |
| (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \ |
| : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size))) |
| |
| |
| int load_aout(const char *filename, hwaddr addr, int max_sz, |
| int bswap_needed, hwaddr target_page_size) |
| { |
| int fd; |
| ssize_t size, ret; |
| struct exec e; |
| uint32_t magic; |
| |
| fd = open(filename, O_RDONLY | O_BINARY); |
| if (fd < 0) |
| return -1; |
| |
| size = read(fd, &e, sizeof(e)); |
| if (size < 0) |
| goto fail; |
| |
| if (bswap_needed) { |
| bswap_ahdr(&e); |
| } |
| |
| magic = N_MAGIC(e); |
| switch (magic) { |
| case ZMAGIC: |
| case QMAGIC: |
| case OMAGIC: |
| if (e.a_text + e.a_data > max_sz) |
| goto fail; |
| lseek(fd, N_TXTOFF(e), SEEK_SET); |
| size = read_targphys(filename, fd, addr, e.a_text + e.a_data); |
| if (size < 0) |
| goto fail; |
| break; |
| case NMAGIC: |
| if (N_DATADDR(e, target_page_size) + e.a_data > max_sz) |
| goto fail; |
| lseek(fd, N_TXTOFF(e), SEEK_SET); |
| size = read_targphys(filename, fd, addr, e.a_text); |
| if (size < 0) |
| goto fail; |
| ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size), |
| e.a_data); |
| if (ret < 0) |
| goto fail; |
| size += ret; |
| break; |
| default: |
| goto fail; |
| } |
| close(fd); |
| return size; |
| fail: |
| close(fd); |
| return -1; |
| } |
| |
| /* ELF loader */ |
| |
| static void *load_at(int fd, int offset, int size) |
| { |
| void *ptr; |
| if (lseek(fd, offset, SEEK_SET) < 0) |
| return NULL; |
| ptr = g_malloc(size); |
| if (read(fd, ptr, size) != size) { |
| g_free(ptr); |
| return NULL; |
| } |
| return ptr; |
| } |
| |
| #ifdef ELF_CLASS |
| #undef ELF_CLASS |
| #endif |
| |
| #define ELF_CLASS ELFCLASS32 |
| #include "elf.h" |
| |
| #define SZ 32 |
| #define elf_word uint32_t |
| #define elf_sword int32_t |
| #define bswapSZs bswap32s |
| #include "hw/elf_ops.h" |
| |
| #undef elfhdr |
| #undef elf_phdr |
| #undef elf_shdr |
| #undef elf_sym |
| #undef elf_note |
| #undef elf_word |
| #undef elf_sword |
| #undef bswapSZs |
| #undef SZ |
| #define elfhdr elf64_hdr |
| #define elf_phdr elf64_phdr |
| #define elf_note elf64_note |
| #define elf_shdr elf64_shdr |
| #define elf_sym elf64_sym |
| #define elf_word uint64_t |
| #define elf_sword int64_t |
| #define bswapSZs bswap64s |
| #define SZ 64 |
| #include "hw/elf_ops.h" |
| |
| /* return < 0 if error, otherwise the number of bytes loaded in memory */ |
| int load_elf(const char *filename, uint64_t (*translate_fn)(void *, uint64_t), |
| void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, |
| uint64_t *highaddr, int big_endian, int elf_machine, int clear_lsb) |
| { |
| int fd, data_order, target_data_order, must_swab, ret; |
| uint8_t e_ident[EI_NIDENT]; |
| |
| fd = open(filename, O_RDONLY | O_BINARY); |
| if (fd < 0) { |
| perror(filename); |
| return -1; |
| } |
| if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident)) |
| goto fail; |
| if (e_ident[0] != ELFMAG0 || |
| e_ident[1] != ELFMAG1 || |
| e_ident[2] != ELFMAG2 || |
| e_ident[3] != ELFMAG3) |
| goto fail; |
| #ifdef HOST_WORDS_BIGENDIAN |
| data_order = ELFDATA2MSB; |
| #else |
| data_order = ELFDATA2LSB; |
| #endif |
| must_swab = data_order != e_ident[EI_DATA]; |
| if (big_endian) { |
| target_data_order = ELFDATA2MSB; |
| } else { |
| target_data_order = ELFDATA2LSB; |
| } |
| |
| if (target_data_order != e_ident[EI_DATA]) { |
| goto fail; |
| } |
| |
| lseek(fd, 0, SEEK_SET); |
| if (e_ident[EI_CLASS] == ELFCLASS64) { |
| ret = load_elf64(filename, fd, translate_fn, translate_opaque, must_swab, |
| pentry, lowaddr, highaddr, elf_machine, clear_lsb); |
| } else { |
| ret = load_elf32(filename, fd, translate_fn, translate_opaque, must_swab, |
| pentry, lowaddr, highaddr, elf_machine, clear_lsb); |
| } |
| |
| close(fd); |
| return ret; |
| |
| fail: |
| close(fd); |
| return -1; |
| } |
| |
| static void bswap_uboot_header(uboot_image_header_t *hdr) |
| { |
| #ifndef HOST_WORDS_BIGENDIAN |
| bswap32s(&hdr->ih_magic); |
| bswap32s(&hdr->ih_hcrc); |
| bswap32s(&hdr->ih_time); |
| bswap32s(&hdr->ih_size); |
| bswap32s(&hdr->ih_load); |
| bswap32s(&hdr->ih_ep); |
| bswap32s(&hdr->ih_dcrc); |
| #endif |
| } |
| |
| |
| #define ZALLOC_ALIGNMENT 16 |
| |
| static void *zalloc(void *x, unsigned items, unsigned size) |
| { |
| void *p; |
| |
| size *= items; |
| size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1); |
| |
| p = g_malloc(size); |
| |
| return (p); |
| } |
| |
| static void zfree(void *x, void *addr) |
| { |
| g_free(addr); |
| } |
| |
| |
| #define HEAD_CRC 2 |
| #define EXTRA_FIELD 4 |
| #define ORIG_NAME 8 |
| #define COMMENT 0x10 |
| #define RESERVED 0xe0 |
| |
| #define DEFLATED 8 |
| |
| /* This is the usual maximum in uboot, so if a uImage overflows this, it would |
| * overflow on real hardware too. */ |
| #define UBOOT_MAX_GUNZIP_BYTES (64 << 20) |
| |
| static ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, |
| size_t srclen) |
| { |
| z_stream s; |
| ssize_t dstbytes; |
| int r, i, flags; |
| |
| /* skip header */ |
| i = 10; |
| flags = src[3]; |
| if (src[2] != DEFLATED || (flags & RESERVED) != 0) { |
| puts ("Error: Bad gzipped data\n"); |
| return -1; |
| } |
| if ((flags & EXTRA_FIELD) != 0) |
| i = 12 + src[10] + (src[11] << 8); |
| if ((flags & ORIG_NAME) != 0) |
| while (src[i++] != 0) |
| ; |
| if ((flags & COMMENT) != 0) |
| while (src[i++] != 0) |
| ; |
| if ((flags & HEAD_CRC) != 0) |
| i += 2; |
| if (i >= srclen) { |
| puts ("Error: gunzip out of data in header\n"); |
| return -1; |
| } |
| |
| s.zalloc = zalloc; |
| s.zfree = zfree; |
| |
| r = inflateInit2(&s, -MAX_WBITS); |
| if (r != Z_OK) { |
| printf ("Error: inflateInit2() returned %d\n", r); |
| return (-1); |
| } |
| s.next_in = src + i; |
| s.avail_in = srclen - i; |
| s.next_out = dst; |
| s.avail_out = dstlen; |
| r = inflate(&s, Z_FINISH); |
| if (r != Z_OK && r != Z_STREAM_END) { |
| printf ("Error: inflate() returned %d\n", r); |
| return -1; |
| } |
| dstbytes = s.next_out - (unsigned char *) dst; |
| inflateEnd(&s); |
| |
| return dstbytes; |
| } |
| |
| /* Load a U-Boot image. */ |
| static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr, |
| int *is_linux, uint8_t image_type) |
| { |
| int fd; |
| int size; |
| hwaddr address; |
| uboot_image_header_t h; |
| uboot_image_header_t *hdr = &h; |
| uint8_t *data = NULL; |
| int ret = -1; |
| int do_uncompress = 0; |
| |
| fd = open(filename, O_RDONLY | O_BINARY); |
| if (fd < 0) |
| return -1; |
| |
| size = read(fd, hdr, sizeof(uboot_image_header_t)); |
| if (size < 0) |
| goto out; |
| |
| bswap_uboot_header(hdr); |
| |
| if (hdr->ih_magic != IH_MAGIC) |
| goto out; |
| |
| if (hdr->ih_type != image_type) { |
| fprintf(stderr, "Wrong image type %d, expected %d\n", hdr->ih_type, |
| image_type); |
| goto out; |
| } |
| |
| /* TODO: Implement other image types. */ |
| switch (hdr->ih_type) { |
| case IH_TYPE_KERNEL: |
| address = hdr->ih_load; |
| if (loadaddr) { |
| *loadaddr = hdr->ih_load; |
| } |
| |
| switch (hdr->ih_comp) { |
| case IH_COMP_NONE: |
| break; |
| case IH_COMP_GZIP: |
| do_uncompress = 1; |
| break; |
| default: |
| fprintf(stderr, |
| "Unable to load u-boot images with compression type %d\n", |
| hdr->ih_comp); |
| goto out; |
| } |
| |
| if (ep) { |
| *ep = hdr->ih_ep; |
| } |
| |
| /* TODO: Check CPU type. */ |
| if (is_linux) { |
| if (hdr->ih_os == IH_OS_LINUX) { |
| *is_linux = 1; |
| } else { |
| *is_linux = 0; |
| } |
| } |
| |
| break; |
| case IH_TYPE_RAMDISK: |
| address = *loadaddr; |
| break; |
| default: |
| fprintf(stderr, "Unsupported u-boot image type %d\n", hdr->ih_type); |
| goto out; |
| } |
| |
| data = g_malloc(hdr->ih_size); |
| |
| if (read(fd, data, hdr->ih_size) != hdr->ih_size) { |
| fprintf(stderr, "Error reading file\n"); |
| goto out; |
| } |
| |
| if (do_uncompress) { |
| uint8_t *compressed_data; |
| size_t max_bytes; |
| ssize_t bytes; |
| |
| compressed_data = data; |
| max_bytes = UBOOT_MAX_GUNZIP_BYTES; |
| data = g_malloc(max_bytes); |
| |
| bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size); |
| g_free(compressed_data); |
| if (bytes < 0) { |
| fprintf(stderr, "Unable to decompress gzipped image!\n"); |
| goto out; |
| } |
| hdr->ih_size = bytes; |
| } |
| |
| rom_add_blob_fixed(filename, data, hdr->ih_size, address); |
| |
| ret = hdr->ih_size; |
| |
| out: |
| if (data) |
| g_free(data); |
| close(fd); |
| return ret; |
| } |
| |
| int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr, |
| int *is_linux) |
| { |
| return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL); |
| } |
| |
| /* Load a ramdisk. */ |
| int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz) |
| { |
| return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK); |
| } |
| |
| /* |
| * Functions for reboot-persistent memory regions. |
| * - used for vga bios and option roms. |
| * - also linux kernel (-kernel / -initrd). |
| */ |
| |
| typedef struct Rom Rom; |
| |
| struct Rom { |
| char *name; |
| char *path; |
| |
| /* datasize is the amount of memory allocated in "data". If datasize is less |
| * than romsize, it means that the area from datasize to romsize is filled |
| * with zeros. |
| */ |
| size_t romsize; |
| size_t datasize; |
| |
| uint8_t *data; |
| MemoryRegion *mr; |
| int isrom; |
| char *fw_dir; |
| char *fw_file; |
| |
| hwaddr addr; |
| QTAILQ_ENTRY(Rom) next; |
| }; |
| |
| static FWCfgState *fw_cfg; |
| static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms); |
| |
| static void rom_insert(Rom *rom) |
| { |
| Rom *item; |
| |
| if (roms_loaded) { |
| hw_error ("ROM images must be loaded at startup\n"); |
| } |
| |
| /* list is ordered by load address */ |
| QTAILQ_FOREACH(item, &roms, next) { |
| if (rom->addr >= item->addr) |
| continue; |
| QTAILQ_INSERT_BEFORE(item, rom, next); |
| return; |
| } |
| QTAILQ_INSERT_TAIL(&roms, rom, next); |
| } |
| |
| static void *rom_set_mr(Rom *rom, Object *owner, const char *name) |
| { |
| void *data; |
| |
| rom->mr = g_malloc(sizeof(*rom->mr)); |
| memory_region_init_ram(rom->mr, owner, name, rom->datasize); |
| memory_region_set_readonly(rom->mr, true); |
| vmstate_register_ram_global(rom->mr); |
| |
| data = memory_region_get_ram_ptr(rom->mr); |
| memcpy(data, rom->data, rom->datasize); |
| |
| return data; |
| } |
| |
| int rom_add_file(const char *file, const char *fw_dir, |
| hwaddr addr, int32_t bootindex) |
| { |
| Rom *rom; |
| int rc, fd = -1; |
| char devpath[100]; |
| |
| rom = g_malloc0(sizeof(*rom)); |
| rom->name = g_strdup(file); |
| rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name); |
| if (rom->path == NULL) { |
| rom->path = g_strdup(file); |
| } |
| |
| fd = open(rom->path, O_RDONLY | O_BINARY); |
| if (fd == -1) { |
| fprintf(stderr, "Could not open option rom '%s': %s\n", |
| rom->path, strerror(errno)); |
| goto err; |
| } |
| |
| if (fw_dir) { |
| rom->fw_dir = g_strdup(fw_dir); |
| rom->fw_file = g_strdup(file); |
| } |
| rom->addr = addr; |
| rom->romsize = lseek(fd, 0, SEEK_END); |
| rom->datasize = rom->romsize; |
| rom->data = g_malloc0(rom->datasize); |
| lseek(fd, 0, SEEK_SET); |
| rc = read(fd, rom->data, rom->datasize); |
| if (rc != rom->datasize) { |
| fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n", |
| rom->name, rc, rom->datasize); |
| goto err; |
| } |
| close(fd); |
| rom_insert(rom); |
| if (rom->fw_file && fw_cfg) { |
| const char *basename; |
| char fw_file_name[FW_CFG_MAX_FILE_PATH]; |
| void *data; |
| |
| basename = strrchr(rom->fw_file, '/'); |
| if (basename) { |
| basename++; |
| } else { |
| basename = rom->fw_file; |
| } |
| snprintf(fw_file_name, sizeof(fw_file_name), "%s/%s", rom->fw_dir, |
| basename); |
| snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name); |
| |
| if (rom_file_in_ram) { |
| data = rom_set_mr(rom, OBJECT(fw_cfg), devpath); |
| } else { |
| data = rom->data; |
| } |
| |
| fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize); |
| } else { |
| snprintf(devpath, sizeof(devpath), "/rom@" TARGET_FMT_plx, addr); |
| } |
| |
| add_boot_device_path(bootindex, NULL, devpath); |
| return 0; |
| |
| err: |
| if (fd != -1) |
| close(fd); |
| g_free(rom->data); |
| g_free(rom->path); |
| g_free(rom->name); |
| g_free(rom); |
| return -1; |
| } |
| |
| void *rom_add_blob(const char *name, const void *blob, size_t len, |
| hwaddr addr, const char *fw_file_name, |
| FWCfgReadCallback fw_callback, void *callback_opaque) |
| { |
| Rom *rom; |
| void *data = NULL; |
| |
| rom = g_malloc0(sizeof(*rom)); |
| rom->name = g_strdup(name); |
| rom->addr = addr; |
| rom->romsize = len; |
| rom->datasize = len; |
| rom->data = g_malloc0(rom->datasize); |
| memcpy(rom->data, blob, len); |
| rom_insert(rom); |
| if (fw_file_name && fw_cfg) { |
| char devpath[100]; |
| |
| snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name); |
| |
| if (rom_file_in_ram) { |
| data = rom_set_mr(rom, OBJECT(fw_cfg), devpath); |
| } else { |
| data = rom->data; |
| } |
| |
| fw_cfg_add_file_callback(fw_cfg, fw_file_name, |
| fw_callback, callback_opaque, |
| data, rom->romsize); |
| } |
| return data; |
| } |
| |
| /* This function is specific for elf program because we don't need to allocate |
| * all the rom. We just allocate the first part and the rest is just zeros. This |
| * is why romsize and datasize are different. Also, this function seize the |
| * memory ownership of "data", so we don't have to allocate and copy the buffer. |
| */ |
| int rom_add_elf_program(const char *name, void *data, size_t datasize, |
| size_t romsize, hwaddr addr) |
| { |
| Rom *rom; |
| |
| rom = g_malloc0(sizeof(*rom)); |
| rom->name = g_strdup(name); |
| rom->addr = addr; |
| rom->datasize = datasize; |
| rom->romsize = romsize; |
| rom->data = data; |
| rom_insert(rom); |
| return 0; |
| } |
| |
| int rom_add_vga(const char *file) |
| { |
| return rom_add_file(file, "vgaroms", 0, -1); |
| } |
| |
| int rom_add_option(const char *file, int32_t bootindex) |
| { |
| return rom_add_file(file, "genroms", 0, bootindex); |
| } |
| |
| static void rom_reset(void *unused) |
| { |
| Rom *rom; |
| |
| QTAILQ_FOREACH(rom, &roms, next) { |
| if (rom->fw_file) { |
| continue; |
| } |
| if (rom->data == NULL) { |
| continue; |
| } |
| if (rom->mr) { |
| void *host = memory_region_get_ram_ptr(rom->mr); |
| memcpy(host, rom->data, rom->datasize); |
| } else { |
| cpu_physical_memory_write_rom(rom->addr, rom->data, rom->datasize); |
| } |
| if (rom->isrom) { |
| /* rom needs to be written only once */ |
| g_free(rom->data); |
| rom->data = NULL; |
| } |
| /* |
| * The rom loader is really on the same level as firmware in the guest |
| * shadowing a ROM into RAM. Such a shadowing mechanism needs to ensure |
| * that the instruction cache for that new region is clear, so that the |
| * CPU definitely fetches its instructions from the just written data. |
| */ |
| cpu_flush_icache_range(rom->addr, rom->datasize); |
| } |
| } |
| |
| int rom_load_all(void) |
| { |
| hwaddr addr = 0; |
| MemoryRegionSection section; |
| Rom *rom; |
| |
| QTAILQ_FOREACH(rom, &roms, next) { |
| if (rom->fw_file) { |
| continue; |
| } |
| if (addr > rom->addr) { |
| fprintf(stderr, "rom: requested regions overlap " |
| "(rom %s. free=0x" TARGET_FMT_plx |
| ", addr=0x" TARGET_FMT_plx ")\n", |
| rom->name, addr, rom->addr); |
| return -1; |
| } |
| addr = rom->addr; |
| addr += rom->romsize; |
| section = memory_region_find(get_system_memory(), rom->addr, 1); |
| rom->isrom = int128_nz(section.size) && memory_region_is_rom(section.mr); |
| memory_region_unref(section.mr); |
| } |
| qemu_register_reset(rom_reset, NULL); |
| return 0; |
| } |
| |
| void rom_load_done(void) |
| { |
| roms_loaded = 1; |
| } |
| |
| void rom_set_fw(FWCfgState *f) |
| { |
| fw_cfg = f; |
| } |
| |
| static Rom *find_rom(hwaddr addr) |
| { |
| Rom *rom; |
| |
| QTAILQ_FOREACH(rom, &roms, next) { |
| if (rom->fw_file) { |
| continue; |
| } |
| if (rom->mr) { |
| continue; |
| } |
| if (rom->addr > addr) { |
| continue; |
| } |
| if (rom->addr + rom->romsize < addr) { |
| continue; |
| } |
| return rom; |
| } |
| return NULL; |
| } |
| |
| /* |
| * Copies memory from registered ROMs to dest. Any memory that is contained in |
| * a ROM between addr and addr + size is copied. Note that this can involve |
| * multiple ROMs, which need not start at addr and need not end at addr + size. |
| */ |
| int rom_copy(uint8_t *dest, hwaddr addr, size_t size) |
| { |
| hwaddr end = addr + size; |
| uint8_t *s, *d = dest; |
| size_t l = 0; |
| Rom *rom; |
| |
| QTAILQ_FOREACH(rom, &roms, next) { |
| if (rom->fw_file) { |
| continue; |
| } |
| if (rom->mr) { |
| continue; |
| } |
| if (rom->addr + rom->romsize < addr) { |
| continue; |
| } |
| if (rom->addr > end) { |
| break; |
| } |
| |
| d = dest + (rom->addr - addr); |
| s = rom->data; |
| l = rom->datasize; |
| |
| if ((d + l) > (dest + size)) { |
| l = dest - d; |
| } |
| |
| if (l > 0) { |
| memcpy(d, s, l); |
| } |
| |
| if (rom->romsize > rom->datasize) { |
| /* If datasize is less than romsize, it means that we didn't |
| * allocate all the ROM because the trailing data are only zeros. |
| */ |
| |
| d += l; |
| l = rom->romsize - rom->datasize; |
| |
| if ((d + l) > (dest + size)) { |
| /* Rom size doesn't fit in the destination area. Adjust to avoid |
| * overflow. |
| */ |
| l = dest - d; |
| } |
| |
| if (l > 0) { |
| memset(d, 0x0, l); |
| } |
| } |
| } |
| |
| return (d + l) - dest; |
| } |
| |
| void *rom_ptr(hwaddr addr) |
| { |
| Rom *rom; |
| |
| rom = find_rom(addr); |
| if (!rom || !rom->data) |
| return NULL; |
| return rom->data + (addr - rom->addr); |
| } |
| |
| void do_info_roms(Monitor *mon, const QDict *qdict) |
| { |
| Rom *rom; |
| |
| QTAILQ_FOREACH(rom, &roms, next) { |
| if (rom->mr) { |
| monitor_printf(mon, "%s" |
| " size=0x%06zx name=\"%s\"\n", |
| rom->mr->name, |
| rom->romsize, |
| rom->name); |
| } else if (!rom->fw_file) { |
| monitor_printf(mon, "addr=" TARGET_FMT_plx |
| " size=0x%06zx mem=%s name=\"%s\"\n", |
| rom->addr, rom->romsize, |
| rom->isrom ? "rom" : "ram", |
| rom->name); |
| } else { |
| monitor_printf(mon, "fw=%s/%s" |
| " size=0x%06zx name=\"%s\"\n", |
| rom->fw_dir, |
| rom->fw_file, |
| rom->romsize, |
| rom->name); |
| } |
| } |
| } |
