diff options
Diffstat (limited to 'hw/loader.c')
| -rw-r--r-- | hw/loader.c | 850 |
1 files changed, 0 insertions, 850 deletions
diff --git a/hw/loader.c b/hw/loader.c deleted file mode 100644 index 6ce66fb5bb..0000000000 --- a/hw/loader.c +++ /dev/null @@ -1,850 +0,0 @@ -/* - * 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 "hw/uboot_image.h" -#include "hw/loader.h" -#include "hw/fw_cfg.h" -#include "exec/memory.h" -#include "exec/address-spaces.h" - -#include <zlib.h> - -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. */ -int load_uimage(const char *filename, hwaddr *ep, - hwaddr *loadaddr, int *is_linux) -{ - int fd; - int size; - uboot_image_header_t h; - uboot_image_header_t *hdr = &h; - uint8_t *data = NULL; - int ret = -1; - - 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; - - /* TODO: Implement other image types. */ - if (hdr->ih_type != IH_TYPE_KERNEL) { - fprintf(stderr, "Can only load u-boot image type \"kernel\"\n"); - goto out; - } - - switch (hdr->ih_comp) { - case IH_COMP_NONE: - case IH_COMP_GZIP: - break; - default: - fprintf(stderr, - "Unable to load u-boot images with compression type %d\n", - hdr->ih_comp); - goto out; - } - - /* TODO: Check CPU type. */ - if (is_linux) { - if (hdr->ih_os == IH_OS_LINUX) - *is_linux = 1; - else - *is_linux = 0; - } - - *ep = hdr->ih_ep; - 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 (hdr->ih_comp == IH_COMP_GZIP) { - 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, hdr->ih_load); - - if (loadaddr) - *loadaddr = hdr->ih_load; - - ret = hdr->ih_size; - -out: - if (data) - g_free(data); - close(fd); - return ret; -} - -/* - * 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; - 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); -} - -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[56]; - - 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); - fw_cfg_add_file(fw_cfg, fw_file_name, rom->data, rom->romsize); - snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name); - } 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; -} - -int rom_add_blob(const char *name, const void *blob, size_t len, - hwaddr addr) -{ - Rom *rom; - - 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); - return 0; -} - -/* 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; - } - 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; - } - } -} - -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 = section.size && memory_region_is_rom(section.mr); - } - qemu_register_reset(rom_reset, NULL); - roms_loaded = 1; - return 0; -} - -void rom_set_fw(void *f) -{ - fw_cfg = f; -} - -static Rom *find_rom(hwaddr addr) -{ - Rom *rom; - - QTAILQ_FOREACH(rom, &roms, next) { - if (rom->fw_file) { - 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->addr + rom->romsize < addr) { - continue; - } - if (rom->addr > end) { - break; - } - if (!rom->data) { - continue; - } - - d = dest + (rom->addr - addr); - s = rom->data; - l = rom->datasize; - - if ((d + l) > (dest + size)) { - l = dest - d; - } - - 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->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); - } - } -} |