diff options
Diffstat (limited to 'hw/core/loader.c')
| -rw-r--r-- | hw/core/loader.c | 1760 |
1 files changed, 1760 insertions, 0 deletions
diff --git a/hw/core/loader.c b/hw/core/loader.c new file mode 100644 index 000000000..052a0fd71 --- /dev/null +++ b/hw/core/loader.c @@ -0,0 +1,1760 @@ +/* + * 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 "qemu/osdep.h" +#include "qemu-common.h" +#include "qemu/datadir.h" +#include "qapi/error.h" +#include "qapi/qapi-commands-machine.h" +#include "qapi/type-helpers.h" +#include "trace.h" +#include "hw/hw.h" +#include "disas/disas.h" +#include "migration/vmstate.h" +#include "monitor/monitor.h" +#include "sysemu/reset.h" +#include "sysemu/sysemu.h" +#include "uboot_image.h" +#include "hw/loader.h" +#include "hw/nvram/fw_cfg.h" +#include "exec/memory.h" +#include "hw/boards.h" +#include "qemu/cutils.h" +#include "sysemu/runstate.h" + +#include <zlib.h> + +static int roms_loaded; + +/* return the size or -1 if error */ +int64_t get_image_size(const char *filename) +{ + int fd; + int64_t 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 */ +ssize_t load_image_size(const char *filename, void *addr, size_t size) +{ + int fd; + ssize_t actsize, l = 0; + + fd = open(filename, O_RDONLY | O_BINARY); + if (fd < 0) { + return -1; + } + + while ((actsize = read(fd, addr + l, size - l)) > 0) { + l += actsize; + } + + close(fd); + + return actsize < 0 ? -1 : l; +} + +/* 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; +} + +int load_image_targphys(const char *filename, + hwaddr addr, uint64_t max_sz) +{ + return load_image_targphys_as(filename, addr, max_sz, NULL); +} + +/* return the size or -1 if error */ +int load_image_targphys_as(const char *filename, + hwaddr addr, uint64_t max_sz, AddressSpace *as) +{ + int size; + + size = get_image_size(filename); + if (size < 0 || size > max_sz) { + return -1; + } + if (size > 0) { + if (rom_add_file_fixed_as(filename, addr, -1, as) < 0) { + return -1; + } + } + return size; +} + +int load_image_mr(const char *filename, MemoryRegion *mr) +{ + int size; + + if (!memory_access_is_direct(mr, false)) { + /* Can only load an image into RAM or ROM */ + return -1; + } + + size = get_image_size(filename); + + if (size < 0 || size > memory_region_size(mr)) { + return -1; + } + if (size > 0) { + if (rom_add_file_mr(filename, mr, -1) < 0) { + return -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, sizeof(*ptr)); + *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, off_t offset, size_t 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_rela +#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_rela elf64_rela +#define elf_word uint64_t +#define elf_sword int64_t +#define bswapSZs bswap64s +#define SZ 64 +#include "hw/elf_ops.h" + +const char *load_elf_strerror(ssize_t error) +{ + switch (error) { + case 0: + return "No error"; + case ELF_LOAD_FAILED: + return "Failed to load ELF"; + case ELF_LOAD_NOT_ELF: + return "The image is not ELF"; + case ELF_LOAD_WRONG_ARCH: + return "The image is from incompatible architecture"; + case ELF_LOAD_WRONG_ENDIAN: + return "The image has incorrect endianness"; + case ELF_LOAD_TOO_BIG: + return "The image segments are too big to load"; + default: + return "Unknown error"; + } +} + +void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp) +{ + int fd; + uint8_t e_ident_local[EI_NIDENT]; + uint8_t *e_ident; + size_t hdr_size, off; + bool is64l; + + if (!hdr) { + hdr = e_ident_local; + } + e_ident = hdr; + + fd = open(filename, O_RDONLY | O_BINARY); + if (fd < 0) { + error_setg_errno(errp, errno, "Failed to open file: %s", filename); + return; + } + if (read(fd, hdr, EI_NIDENT) != EI_NIDENT) { + error_setg_errno(errp, errno, "Failed to read file: %s", filename); + goto fail; + } + if (e_ident[0] != ELFMAG0 || + e_ident[1] != ELFMAG1 || + e_ident[2] != ELFMAG2 || + e_ident[3] != ELFMAG3) { + error_setg(errp, "Bad ELF magic"); + goto fail; + } + + is64l = e_ident[EI_CLASS] == ELFCLASS64; + hdr_size = is64l ? sizeof(Elf64_Ehdr) : sizeof(Elf32_Ehdr); + if (is64) { + *is64 = is64l; + } + + off = EI_NIDENT; + while (hdr != e_ident_local && off < hdr_size) { + size_t br = read(fd, hdr + off, hdr_size - off); + switch (br) { + case 0: + error_setg(errp, "File too short: %s", filename); + goto fail; + case -1: + error_setg_errno(errp, errno, "Failed to read file: %s", + filename); + goto fail; + } + off += br; + } + +fail: + close(fd); +} + +/* return < 0 if error, otherwise the number of bytes loaded in memory */ +ssize_t load_elf(const char *filename, + uint64_t (*elf_note_fn)(void *, void *, bool), + uint64_t (*translate_fn)(void *, uint64_t), + void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, + uint64_t *highaddr, uint32_t *pflags, int big_endian, + int elf_machine, int clear_lsb, int data_swab) +{ + return load_elf_as(filename, elf_note_fn, translate_fn, translate_opaque, + pentry, lowaddr, highaddr, pflags, big_endian, + elf_machine, clear_lsb, data_swab, NULL); +} + +/* return < 0 if error, otherwise the number of bytes loaded in memory */ +ssize_t load_elf_as(const char *filename, + uint64_t (*elf_note_fn)(void *, void *, bool), + uint64_t (*translate_fn)(void *, uint64_t), + void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, + uint64_t *highaddr, uint32_t *pflags, int big_endian, + int elf_machine, int clear_lsb, int data_swab, + AddressSpace *as) +{ + return load_elf_ram(filename, elf_note_fn, translate_fn, translate_opaque, + pentry, lowaddr, highaddr, pflags, big_endian, + elf_machine, clear_lsb, data_swab, as, true); +} + +/* return < 0 if error, otherwise the number of bytes loaded in memory */ +ssize_t load_elf_ram(const char *filename, + uint64_t (*elf_note_fn)(void *, void *, bool), + uint64_t (*translate_fn)(void *, uint64_t), + void *translate_opaque, uint64_t *pentry, + uint64_t *lowaddr, uint64_t *highaddr, uint32_t *pflags, + int big_endian, int elf_machine, int clear_lsb, + int data_swab, AddressSpace *as, bool load_rom) +{ + return load_elf_ram_sym(filename, elf_note_fn, + translate_fn, translate_opaque, + pentry, lowaddr, highaddr, pflags, big_endian, + elf_machine, clear_lsb, data_swab, as, + load_rom, NULL); +} + +/* return < 0 if error, otherwise the number of bytes loaded in memory */ +ssize_t load_elf_ram_sym(const char *filename, + uint64_t (*elf_note_fn)(void *, void *, bool), + uint64_t (*translate_fn)(void *, uint64_t), + void *translate_opaque, uint64_t *pentry, + uint64_t *lowaddr, uint64_t *highaddr, + uint32_t *pflags, int big_endian, int elf_machine, + int clear_lsb, int data_swab, + AddressSpace *as, bool load_rom, symbol_fn_t sym_cb) +{ + int fd, data_order, target_data_order, must_swab; + ssize_t ret = ELF_LOAD_FAILED; + 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) { + ret = ELF_LOAD_NOT_ELF; + 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]) { + ret = ELF_LOAD_WRONG_ENDIAN; + goto fail; + } + + lseek(fd, 0, SEEK_SET); + if (e_ident[EI_CLASS] == ELFCLASS64) { + ret = load_elf64(filename, fd, elf_note_fn, + translate_fn, translate_opaque, must_swab, + pentry, lowaddr, highaddr, pflags, elf_machine, + clear_lsb, data_swab, as, load_rom, sym_cb); + } else { + ret = load_elf32(filename, fd, elf_note_fn, + translate_fn, translate_opaque, must_swab, + pentry, lowaddr, highaddr, pflags, elf_machine, + clear_lsb, data_swab, as, load_rom, sym_cb); + } + + fail: + close(fd); + return ret; +} + +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 + +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; + if (srclen < 4) { + goto toosmall; + } + flags = src[3]; + if (src[2] != DEFLATED || (flags & RESERVED) != 0) { + puts ("Error: Bad gzipped data\n"); + return -1; + } + if ((flags & EXTRA_FIELD) != 0) { + if (srclen < 12) { + goto toosmall; + } + i = 12 + src[10] + (src[11] << 8); + } + if ((flags & ORIG_NAME) != 0) { + while (i < srclen && src[i++] != 0) { + /* do nothing */ + } + } + if ((flags & COMMENT) != 0) { + while (i < srclen && src[i++] != 0) { + /* do nothing */ + } + } + if ((flags & HEAD_CRC) != 0) { + i += 2; + } + if (i >= srclen) { + goto toosmall; + } + + 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; + +toosmall: + puts("Error: gunzip out of data in header\n"); + return -1; +} + +/* Load a U-Boot image. */ +static int load_uboot_image(const char *filename, hwaddr *ep, hwaddr *loadaddr, + int *is_linux, uint8_t image_type, + uint64_t (*translate_fn)(void *, uint64_t), + void *translate_opaque, AddressSpace *as) +{ + 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 < sizeof(uboot_image_header_t)) { + goto out; + } + + bswap_uboot_header(hdr); + + if (hdr->ih_magic != IH_MAGIC) + goto out; + + if (hdr->ih_type != image_type) { + if (!(image_type == IH_TYPE_KERNEL && + hdr->ih_type == IH_TYPE_KERNEL_NOLOAD)) { + 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_NOLOAD: + if (!loadaddr || *loadaddr == LOAD_UIMAGE_LOADADDR_INVALID) { + fprintf(stderr, "this image format (kernel_noload) cannot be " + "loaded on this machine type"); + goto out; + } + + hdr->ih_load = *loadaddr + sizeof(*hdr); + hdr->ih_ep += hdr->ih_load; + /* fall through */ + case IH_TYPE_KERNEL: + address = hdr->ih_load; + if (translate_fn) { + address = translate_fn(translate_opaque, address); + } + 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_as(filename, data, hdr->ih_size, address, as); + + ret = hdr->ih_size; + +out: + g_free(data); + close(fd); + return ret; +} + +int load_uimage(const char *filename, hwaddr *ep, hwaddr *loadaddr, + int *is_linux, + uint64_t (*translate_fn)(void *, uint64_t), + void *translate_opaque) +{ + return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL, + translate_fn, translate_opaque, NULL); +} + +int load_uimage_as(const char *filename, hwaddr *ep, hwaddr *loadaddr, + int *is_linux, + uint64_t (*translate_fn)(void *, uint64_t), + void *translate_opaque, AddressSpace *as) +{ + return load_uboot_image(filename, ep, loadaddr, is_linux, IH_TYPE_KERNEL, + translate_fn, translate_opaque, as); +} + +/* Load a ramdisk. */ +int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz) +{ + return load_ramdisk_as(filename, addr, max_sz, NULL); +} + +int load_ramdisk_as(const char *filename, hwaddr addr, uint64_t max_sz, + AddressSpace *as) +{ + return load_uboot_image(filename, NULL, &addr, NULL, IH_TYPE_RAMDISK, + NULL, NULL, as); +} + +/* Load a gzip-compressed kernel to a dynamically allocated buffer. */ +int load_image_gzipped_buffer(const char *filename, uint64_t max_sz, + uint8_t **buffer) +{ + uint8_t *compressed_data = NULL; + uint8_t *data = NULL; + gsize len; + ssize_t bytes; + int ret = -1; + + if (!g_file_get_contents(filename, (char **) &compressed_data, &len, + NULL)) { + goto out; + } + + /* Is it a gzip-compressed file? */ + if (len < 2 || + compressed_data[0] != 0x1f || + compressed_data[1] != 0x8b) { + goto out; + } + + if (max_sz > LOAD_IMAGE_MAX_GUNZIP_BYTES) { + max_sz = LOAD_IMAGE_MAX_GUNZIP_BYTES; + } + + data = g_malloc(max_sz); + bytes = gunzip(data, max_sz, compressed_data, len); + if (bytes < 0) { + fprintf(stderr, "%s: unable to decompress gzipped kernel file\n", + filename); + goto out; + } + + /* trim to actual size and return to caller */ + *buffer = g_realloc(data, bytes); + ret = bytes; + /* ownership has been transferred to caller */ + data = NULL; + + out: + g_free(compressed_data); + g_free(data); + return ret; +} + +/* Load a gzip-compressed kernel. */ +int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz) +{ + int bytes; + uint8_t *data; + + bytes = load_image_gzipped_buffer(filename, max_sz, &data); + if (bytes != -1) { + rom_add_blob_fixed(filename, data, bytes, addr); + g_free(data); + } + return bytes; +} + +/* + * 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; + AddressSpace *as; + int isrom; + char *fw_dir; + char *fw_file; + GMappedFile *mapped_file; + + bool committed; + + hwaddr addr; + QTAILQ_ENTRY(Rom) next; +}; + +static FWCfgState *fw_cfg; +static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms); + +/* + * rom->data can be heap-allocated or memory-mapped (e.g. when added with + * rom_add_elf_program()) + */ +static void rom_free_data(Rom *rom) +{ + if (rom->mapped_file) { + g_mapped_file_unref(rom->mapped_file); + rom->mapped_file = NULL; + } else { + g_free(rom->data); + } + + rom->data = NULL; +} + +static void rom_free(Rom *rom) +{ + rom_free_data(rom); + g_free(rom->path); + g_free(rom->name); + g_free(rom->fw_dir); + g_free(rom->fw_file); + g_free(rom); +} + +static inline bool rom_order_compare(Rom *rom, Rom *item) +{ + return ((uintptr_t)(void *)rom->as > (uintptr_t)(void *)item->as) || + (rom->as == item->as && rom->addr >= item->addr); +} + +static void rom_insert(Rom *rom) +{ + Rom *item; + + if (roms_loaded) { + hw_error ("ROM images must be loaded at startup\n"); + } + + /* The user didn't specify an address space, this is the default */ + if (!rom->as) { + rom->as = &address_space_memory; + } + + rom->committed = false; + + /* List is ordered by load address in the same address space */ + QTAILQ_FOREACH(item, &roms, next) { + if (rom_order_compare(rom, item)) { + continue; + } + QTAILQ_INSERT_BEFORE(item, rom, next); + return; + } + QTAILQ_INSERT_TAIL(&roms, rom, next); +} + +static void fw_cfg_resized(const char *id, uint64_t length, void *host) +{ + if (fw_cfg) { + fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length); + } +} + +static void *rom_set_mr(Rom *rom, Object *owner, const char *name, bool ro) +{ + void *data; + + rom->mr = g_malloc(sizeof(*rom->mr)); + memory_region_init_resizeable_ram(rom->mr, owner, name, + rom->datasize, rom->romsize, + fw_cfg_resized, + &error_fatal); + memory_region_set_readonly(rom->mr, ro); + 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, + bool option_rom, MemoryRegion *mr, + AddressSpace *as) +{ + MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); + Rom *rom; + int rc, fd = -1; + char devpath[100]; + + if (as && mr) { + fprintf(stderr, "Specifying an Address Space and Memory Region is " \ + "not valid when loading a rom\n"); + /* We haven't allocated anything so we don't need any cleanup */ + return -1; + } + + rom = g_malloc0(sizeof(*rom)); + rom->name = g_strdup(file); + rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name); + rom->as = as; + 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); + if (rom->romsize == -1) { + fprintf(stderr, "rom: file %-20s: get size error: %s\n", + rom->name, strerror(errno)); + goto err; + } + + 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 ((!option_rom || mc->option_rom_has_mr) && mc->rom_file_has_mr) { + data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, true); + } else { + data = rom->data; + } + + fw_cfg_add_file(fw_cfg, fw_file_name, data, rom->romsize); + } else { + if (mr) { + rom->mr = mr; + snprintf(devpath, sizeof(devpath), "/rom@%s", file); + } 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); + + rom_free(rom); + return -1; +} + +MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len, + size_t max_len, hwaddr addr, const char *fw_file_name, + FWCfgCallback fw_callback, void *callback_opaque, + AddressSpace *as, bool read_only) +{ + MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); + Rom *rom; + MemoryRegion *mr = NULL; + + rom = g_malloc0(sizeof(*rom)); + rom->name = g_strdup(name); + rom->as = as; + rom->addr = addr; + rom->romsize = max_len ? max_len : len; + rom->datasize = len; + g_assert(rom->romsize >= rom->datasize); + rom->data = g_malloc0(rom->datasize); + memcpy(rom->data, blob, len); + rom_insert(rom); + if (fw_file_name && fw_cfg) { + char devpath[100]; + void *data; + + if (read_only) { + snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name); + } else { + snprintf(devpath, sizeof(devpath), "/ram@%s", fw_file_name); + } + + if (mc->rom_file_has_mr) { + data = rom_set_mr(rom, OBJECT(fw_cfg), devpath, read_only); + mr = rom->mr; + } else { + data = rom->data; + } + + fw_cfg_add_file_callback(fw_cfg, fw_file_name, + fw_callback, NULL, callback_opaque, + data, rom->datasize, read_only); + } + return mr; +} + +/* 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 takes its own + * reference to "mapped_file", so we don't have to allocate and copy the buffer. + */ +int rom_add_elf_program(const char *name, GMappedFile *mapped_file, void *data, + size_t datasize, size_t romsize, hwaddr addr, + AddressSpace *as) +{ + 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->as = as; + + if (mapped_file && data) { + g_mapped_file_ref(mapped_file); + rom->mapped_file = mapped_file; + } + + rom_insert(rom); + return 0; +} + +int rom_add_vga(const char *file) +{ + return rom_add_file(file, "vgaroms", 0, -1, true, NULL, NULL); +} + +int rom_add_option(const char *file, int32_t bootindex) +{ + return rom_add_file(file, "genroms", 0, bootindex, true, NULL, NULL); +} + +static void rom_reset(void *unused) +{ + Rom *rom; + + QTAILQ_FOREACH(rom, &roms, next) { + if (rom->fw_file) { + continue; + } + /* + * We don't need to fill in the RAM with ROM data because we'll fill + * the data in during the next incoming migration in all cases. Note + * that some of those RAMs can actually be modified by the guest. + */ + if (runstate_check(RUN_STATE_INMIGRATE)) { + if (rom->data && rom->isrom) { + /* + * Free it so that a rom_reset after migration doesn't + * overwrite a potentially modified 'rom'. + */ + rom_free_data(rom); + } + 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 { + address_space_write_rom(rom->as, rom->addr, MEMTXATTRS_UNSPECIFIED, + rom->data, rom->datasize); + } + if (rom->isrom) { + /* rom needs to be written only once */ + rom_free_data(rom); + } + /* + * 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); + + trace_loader_write_rom(rom->name, rom->addr, rom->datasize, rom->isrom); + } +} + +/* Return true if two consecutive ROMs in the ROM list overlap */ +static bool roms_overlap(Rom *last_rom, Rom *this_rom) +{ + if (!last_rom) { + return false; + } + return last_rom->as == this_rom->as && + last_rom->addr + last_rom->romsize > this_rom->addr; +} + +static const char *rom_as_name(Rom *rom) +{ + const char *name = rom->as ? rom->as->name : NULL; + return name ?: "anonymous"; +} + +static void rom_print_overlap_error_header(void) +{ + error_report("Some ROM regions are overlapping"); + error_printf( + "These ROM regions might have been loaded by " + "direct user request or by default.\n" + "They could be BIOS/firmware images, a guest kernel, " + "initrd or some other file loaded into guest memory.\n" + "Check whether you intended to load all this guest code, and " + "whether it has been built to load to the correct addresses.\n"); +} + +static void rom_print_one_overlap_error(Rom *last_rom, Rom *rom) +{ + error_printf( + "\nThe following two regions overlap (in the %s address space):\n", + rom_as_name(rom)); + error_printf( + " %s (addresses 0x" TARGET_FMT_plx " - 0x" TARGET_FMT_plx ")\n", + last_rom->name, last_rom->addr, last_rom->addr + last_rom->romsize); + error_printf( + " %s (addresses 0x" TARGET_FMT_plx " - 0x" TARGET_FMT_plx ")\n", + rom->name, rom->addr, rom->addr + rom->romsize); +} + +int rom_check_and_register_reset(void) +{ + MemoryRegionSection section; + Rom *rom, *last_rom = NULL; + bool found_overlap = false; + + QTAILQ_FOREACH(rom, &roms, next) { + if (rom->fw_file) { + continue; + } + if (!rom->mr) { + if (roms_overlap(last_rom, rom)) { + if (!found_overlap) { + found_overlap = true; + rom_print_overlap_error_header(); + } + rom_print_one_overlap_error(last_rom, rom); + /* Keep going through the list so we report all overlaps */ + } + last_rom = rom; + } + section = memory_region_find(rom->mr ? rom->mr : get_system_memory(), + rom->addr, 1); + rom->isrom = int128_nz(section.size) && memory_region_is_rom(section.mr); + memory_region_unref(section.mr); + } + if (found_overlap) { + return -1; + } + + qemu_register_reset(rom_reset, NULL); + roms_loaded = 1; + return 0; +} + +void rom_set_fw(FWCfgState *f) +{ + fw_cfg = f; +} + +void rom_set_order_override(int order) +{ + if (!fw_cfg) + return; + fw_cfg_set_order_override(fw_cfg, order); +} + +void rom_reset_order_override(void) +{ + if (!fw_cfg) + return; + fw_cfg_reset_order_override(fw_cfg); +} + +void rom_transaction_begin(void) +{ + Rom *rom; + + /* Ignore ROMs added without the transaction API */ + QTAILQ_FOREACH(rom, &roms, next) { + rom->committed = true; + } +} + +void rom_transaction_end(bool commit) +{ + Rom *rom; + Rom *tmp; + + QTAILQ_FOREACH_SAFE(rom, &roms, next, tmp) { + if (rom->committed) { + continue; + } + if (commit) { + rom->committed = true; + } else { + QTAILQ_REMOVE(&roms, rom, next); + rom_free(rom); + } + } +} + +static Rom *find_rom(hwaddr addr, size_t size) +{ + 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 + size) { + 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 || rom->addr < addr) { + 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, size_t size) +{ + Rom *rom; + + rom = find_rom(addr, size); + if (!rom || !rom->data) + return NULL; + return rom->data + (addr - rom->addr); +} + +typedef struct FindRomCBData { + size_t size; /* Amount of data we want from ROM, in bytes */ + MemoryRegion *mr; /* MR at the unaliased guest addr */ + hwaddr xlat; /* Offset of addr within mr */ + void *rom; /* Output: rom data pointer, if found */ +} FindRomCBData; + +static bool find_rom_cb(Int128 start, Int128 len, const MemoryRegion *mr, + hwaddr offset_in_region, void *opaque) +{ + FindRomCBData *cbdata = opaque; + hwaddr alias_addr; + + if (mr != cbdata->mr) { + return false; + } + + alias_addr = int128_get64(start) + cbdata->xlat - offset_in_region; + cbdata->rom = rom_ptr(alias_addr, cbdata->size); + if (!cbdata->rom) { + return false; + } + /* Found a match, stop iterating */ + return true; +} + +void *rom_ptr_for_as(AddressSpace *as, hwaddr addr, size_t size) +{ + /* + * Find any ROM data for the given guest address range. If there + * is a ROM blob then return a pointer to the host memory + * corresponding to 'addr'; otherwise return NULL. + * + * We look not only for ROM blobs that were loaded directly to + * addr, but also for ROM blobs that were loaded to aliases of + * that memory at other addresses within the AddressSpace. + * + * Note that we do not check @as against the 'as' member in the + * 'struct Rom' returned by rom_ptr(). The Rom::as is the + * AddressSpace which the rom blob should be written to, whereas + * our @as argument is the AddressSpace which we are (effectively) + * reading from, and the same underlying RAM will often be visible + * in multiple AddressSpaces. (A common example is a ROM blob + * written to the 'system' address space but then read back via a + * CPU's cpu->as pointer.) This does mean we might potentially + * return a false-positive match if a ROM blob was loaded into an + * AS which is entirely separate and distinct from the one we're + * querying, but this issue exists also for rom_ptr() and hasn't + * caused any problems in practice. + */ + FlatView *fv; + void *rom; + hwaddr len_unused; + FindRomCBData cbdata = {}; + + /* Easy case: there's data at the actual address */ + rom = rom_ptr(addr, size); + if (rom) { + return rom; + } + + RCU_READ_LOCK_GUARD(); + + fv = address_space_to_flatview(as); + cbdata.mr = flatview_translate(fv, addr, &cbdata.xlat, &len_unused, + false, MEMTXATTRS_UNSPECIFIED); + if (!cbdata.mr) { + /* Nothing at this address, so there can't be any aliasing */ + return NULL; + } + cbdata.size = size; + flatview_for_each_range(fv, find_rom_cb, &cbdata); + return cbdata.rom; +} + +HumanReadableText *qmp_x_query_roms(Error **errp) +{ + Rom *rom; + g_autoptr(GString) buf = g_string_new(""); + + QTAILQ_FOREACH(rom, &roms, next) { + if (rom->mr) { + g_string_append_printf(buf, "%s" + " size=0x%06zx name=\"%s\"\n", + memory_region_name(rom->mr), + rom->romsize, + rom->name); + } else if (!rom->fw_file) { + g_string_append_printf(buf, "addr=" TARGET_FMT_plx + " size=0x%06zx mem=%s name=\"%s\"\n", + rom->addr, rom->romsize, + rom->isrom ? "rom" : "ram", + rom->name); + } else { + g_string_append_printf(buf, "fw=%s/%s" + " size=0x%06zx name=\"%s\"\n", + rom->fw_dir, + rom->fw_file, + rom->romsize, + rom->name); + } + } + + return human_readable_text_from_str(buf); +} + +typedef enum HexRecord HexRecord; +enum HexRecord { + DATA_RECORD = 0, + EOF_RECORD, + EXT_SEG_ADDR_RECORD, + START_SEG_ADDR_RECORD, + EXT_LINEAR_ADDR_RECORD, + START_LINEAR_ADDR_RECORD, +}; + +/* Each record contains a 16-bit address which is combined with the upper 16 + * bits of the implicit "next address" to form a 32-bit address. + */ +#define NEXT_ADDR_MASK 0xffff0000 + +#define DATA_FIELD_MAX_LEN 0xff +#define LEN_EXCEPT_DATA 0x5 +/* 0x5 = sizeof(byte_count) + sizeof(address) + sizeof(record_type) + + * sizeof(checksum) */ +typedef struct { + uint8_t byte_count; + uint16_t address; + uint8_t record_type; + uint8_t data[DATA_FIELD_MAX_LEN]; + uint8_t checksum; +} HexLine; + +/* return 0 or -1 if error */ +static bool parse_record(HexLine *line, uint8_t *our_checksum, const uint8_t c, + uint32_t *index, const bool in_process) +{ + /* +-------+---------------+-------+---------------------+--------+ + * | byte | |record | | | + * | count | address | type | data |checksum| + * +-------+---------------+-------+---------------------+--------+ + * ^ ^ ^ ^ ^ ^ + * |1 byte | 2 bytes |1 byte | 0-255 bytes | 1 byte | + */ + uint8_t value = 0; + uint32_t idx = *index; + /* ignore space */ + if (g_ascii_isspace(c)) { + return true; + } + if (!g_ascii_isxdigit(c) || !in_process) { + return false; + } + value = g_ascii_xdigit_value(c); + value = (idx & 0x1) ? (value & 0xf) : (value << 4); + if (idx < 2) { + line->byte_count |= value; + } else if (2 <= idx && idx < 6) { + line->address <<= 4; + line->address += g_ascii_xdigit_value(c); + } else if (6 <= idx && idx < 8) { + line->record_type |= value; + } else if (8 <= idx && idx < 8 + 2 * line->byte_count) { + line->data[(idx - 8) >> 1] |= value; + } else if (8 + 2 * line->byte_count <= idx && + idx < 10 + 2 * line->byte_count) { + line->checksum |= value; + } else { + return false; + } + *our_checksum += value; + ++(*index); + return true; +} + +typedef struct { + const char *filename; + HexLine line; + uint8_t *bin_buf; + hwaddr *start_addr; + int total_size; + uint32_t next_address_to_write; + uint32_t current_address; + uint32_t current_rom_index; + uint32_t rom_start_address; + AddressSpace *as; + bool complete; +} HexParser; + +/* return size or -1 if error */ +static int handle_record_type(HexParser *parser) +{ + HexLine *line = &(parser->line); + switch (line->record_type) { + case DATA_RECORD: + parser->current_address = + (parser->next_address_to_write & NEXT_ADDR_MASK) | line->address; + /* verify this is a contiguous block of memory */ + if (parser->current_address != parser->next_address_to_write) { + if (parser->current_rom_index != 0) { + rom_add_blob_fixed_as(parser->filename, parser->bin_buf, + parser->current_rom_index, + parser->rom_start_address, parser->as); + } + parser->rom_start_address = parser->current_address; + parser->current_rom_index = 0; + } + + /* copy from line buffer to output bin_buf */ + memcpy(parser->bin_buf + parser->current_rom_index, line->data, + line->byte_count); + parser->current_rom_index += line->byte_count; + parser->total_size += line->byte_count; + /* save next address to write */ + parser->next_address_to_write = + parser->current_address + line->byte_count; + break; + + case EOF_RECORD: + if (parser->current_rom_index != 0) { + rom_add_blob_fixed_as(parser->filename, parser->bin_buf, + parser->current_rom_index, + parser->rom_start_address, parser->as); + } + parser->complete = true; + return parser->total_size; + case EXT_SEG_ADDR_RECORD: + case EXT_LINEAR_ADDR_RECORD: + if (line->byte_count != 2 && line->address != 0) { + return -1; + } + + if (parser->current_rom_index != 0) { + rom_add_blob_fixed_as(parser->filename, parser->bin_buf, + parser->current_rom_index, + parser->rom_start_address, parser->as); + } + + /* save next address to write, + * in case of non-contiguous block of memory */ + parser->next_address_to_write = (line->data[0] << 12) | + (line->data[1] << 4); + if (line->record_type == EXT_LINEAR_ADDR_RECORD) { + parser->next_address_to_write <<= 12; + } + + parser->rom_start_address = parser->next_address_to_write; + parser->current_rom_index = 0; + break; + + case START_SEG_ADDR_RECORD: + if (line->byte_count != 4 && line->address != 0) { + return -1; + } + + /* x86 16-bit CS:IP segmented addressing */ + *(parser->start_addr) = (((line->data[0] << 8) | line->data[1]) << 4) + + ((line->data[2] << 8) | line->data[3]); + break; + + case START_LINEAR_ADDR_RECORD: + if (line->byte_count != 4 && line->address != 0) { + return -1; + } + + *(parser->start_addr) = ldl_be_p(line->data); + break; + + default: + return -1; + } + + return parser->total_size; +} + +/* return size or -1 if error */ +static int parse_hex_blob(const char *filename, hwaddr *addr, uint8_t *hex_blob, + size_t hex_blob_size, AddressSpace *as) +{ + bool in_process = false; /* avoid re-enter and + * check whether record begin with ':' */ + uint8_t *end = hex_blob + hex_blob_size; + uint8_t our_checksum = 0; + uint32_t record_index = 0; + HexParser parser = { + .filename = filename, + .bin_buf = g_malloc(hex_blob_size), + .start_addr = addr, + .as = as, + .complete = false + }; + + rom_transaction_begin(); + + for (; hex_blob < end && !parser.complete; ++hex_blob) { + switch (*hex_blob) { + case '\r': + case '\n': + if (!in_process) { + break; + } + + in_process = false; + if ((LEN_EXCEPT_DATA + parser.line.byte_count) * 2 != + record_index || + our_checksum != 0) { + parser.total_size = -1; + goto out; + } + + if (handle_record_type(&parser) == -1) { + parser.total_size = -1; + goto out; + } + break; + + /* start of a new record. */ + case ':': + memset(&parser.line, 0, sizeof(HexLine)); + in_process = true; + record_index = 0; + break; + + /* decoding lines */ + default: + if (!parse_record(&parser.line, &our_checksum, *hex_blob, + &record_index, in_process)) { + parser.total_size = -1; + goto out; + } + break; + } + } + +out: + g_free(parser.bin_buf); + rom_transaction_end(parser.total_size != -1); + return parser.total_size; +} + +/* return size or -1 if error */ +int load_targphys_hex_as(const char *filename, hwaddr *entry, AddressSpace *as) +{ + gsize hex_blob_size; + gchar *hex_blob; + int total_size = 0; + + if (!g_file_get_contents(filename, &hex_blob, &hex_blob_size, NULL)) { + return -1; + } + + total_size = parse_hex_blob(filename, entry, (uint8_t *)hex_blob, + hex_blob_size, as); + + g_free(hex_blob); + return total_size; +} |