include/hw/loader.h

   1 #ifndef LOADER_H
   2 #define LOADER_H
   3 #include "hw/nvram/fw_cfg.h"
   4
   5 /* loader.c */
   6 /**
   7  * get_image_size: retrieve size of an image file
   8  * @filename: Path to the image file
   9  *
  10  * Returns the size of the image file on success, -1 otherwise.
  11  * On error, errno is also set as appropriate.
  12  */
  13 int64_t get_image_size(const char *filename);
  14 /**
  15  * load_image_size: load an image file into specified buffer
  16  * @filename: Path to the image file
  17  * @addr: Buffer to load image into
  18  * @size: Size of buffer in bytes
  19  *
  20  * Load an image file from disk into the specified buffer.
  21  * If the image is larger than the specified buffer, only
  22  * @size bytes are read (this is not considered an error).
  23  *
  24  * Prefer to use the GLib function g_file_get_contents() rather
  25  * than a "get_image_size()/g_malloc()/load_image_size()" sequence.
  26  *
  27  * Returns the number of bytes read, or -1 on error. On error,
  28  * errno is also set as appropriate.
  29  */
  30 ssize_t load_image_size(const char *filename, void *addr, size_t size);
  31
  32 /**load_image_targphys_as:
  33  * @filename: Path to the image file
  34  * @addr: Address to load the image to
  35  * @max_sz: The maximum size of the image to load
  36  * @as: The AddressSpace to load the ELF to. The value of address_space_memory
  37  *      is used if nothing is supplied here.
  38  *
  39  * Load a fixed image into memory.
  40  *
  41  * Returns the size of the loaded image on success, -1 otherwise.
  42  */
  43 int load_image_targphys_as(const char *filename,
  44                            hwaddr addr, uint64_t max_sz, AddressSpace *as);
  45
  46 /**load_targphys_hex_as:
  47  * @filename: Path to the .hex file
  48  * @entry: Store the entry point given by the .hex file
  49  * @as: The AddressSpace to load the .hex file to. The value of
  50  *      address_space_memory is used if nothing is supplied here.
  51  *
  52  * Load a fixed .hex file into memory.
  53  *
  54  * Returns the size of the loaded .hex file on success, -1 otherwise.
  55  */
  56 int load_targphys_hex_as(const char *filename, hwaddr *entry, AddressSpace *as);
  57
  58 /** load_image_targphys:
  59  * Same as load_image_targphys_as(), but doesn't allow the caller to specify
  60  * an AddressSpace.
  61  */
  62 int load_image_targphys(const char *filename, hwaddr,
  63                         uint64_t max_sz);
  64
  65 /**
  66  * load_image_mr: load an image into a memory region
  67  * @filename: Path to the image file
  68  * @mr: Memory Region to load into
  69  *
  70  * Load the specified file into the memory region.
  71  * The file loaded is registered as a ROM, so its contents will be
  72  * reinstated whenever the system is reset.
  73  * If the file is larger than the memory region's size the call will fail.
  74  * Returns -1 on failure, or the size of the file.
  75  */
  76 int load_image_mr(const char *filename, MemoryRegion *mr);
  77
  78 /* This is the limit on the maximum uncompressed image size that
  79  * load_image_gzipped_buffer() and load_image_gzipped() will read. It prevents
  80  * g_malloc() in those functions from allocating a huge amount of memory.
  81  */
  82 #define LOAD_IMAGE_MAX_GUNZIP_BYTES (256 << 20)
  83
  84 int load_image_gzipped_buffer(const char *filename, uint64_t max_sz,
  85                               uint8_t **buffer);
  86 int load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz);
  87
  88 #define ELF_LOAD_FAILED       -1
  89 #define ELF_LOAD_NOT_ELF      -2
  90 #define ELF_LOAD_WRONG_ARCH   -3
  91 #define ELF_LOAD_WRONG_ENDIAN -4
  92 #define ELF_LOAD_TOO_BIG      -5
  93 const char *load_elf_strerror(int error);
  94
  95 /** load_elf_ram_sym:
  96  * @filename: Path of ELF file
  97  * @elf_note_fn: optional function to parse ELF Note type
  98  *               passed via @translate_opaque
  99  * @translate_fn: optional function to translate load addresses
 100  * @translate_opaque: opaque data passed to @translate_fn
 101  * @pentry: Populated with program entry point. Ignored if NULL.
 102  * @lowaddr: Populated with lowest loaded address. Ignored if NULL.
 103  * @highaddr: Populated with highest loaded address. Ignored if NULL.
 104  * @pflags: Populated with ELF processor-specific flags. Ignore if NULL.
 105  * @bigendian: Expected ELF endianness. 0 for LE otherwise BE
 106  * @elf_machine: Expected ELF machine type
 107  * @clear_lsb: Set to mask off LSB of addresses (Some architectures use
 108  *             this for non-address data)
 109  * @data_swab: Set to order of byte swapping for data. 0 for no swap, 1
 110  *             for swapping bytes within halfwords, 2 for bytes within
 111  *             words and 3 for within doublewords.
 112  * @as: The AddressSpace to load the ELF to. The value of address_space_memory
 113  *      is used if nothing is supplied here.
 114  * @load_rom : Load ELF binary as ROM
 115  * @sym_cb: Callback function for symbol table entries
 116  *
 117  * Load an ELF file's contents to the emulated system's address space.
 118  * Clients may optionally specify a callback to perform address
 119  * translations. @pentry, @lowaddr and @highaddr are optional pointers
 120  * which will be populated with various load information. @bigendian and
 121  * @elf_machine give the expected endianness and machine for the ELF the
 122  * load will fail if the target ELF does not match. Some architectures
 123  * have some architecture-specific behaviours that come into effect when
 124  * their particular values for @elf_machine are set.
 125  * If @elf_machine is EM_NONE then the machine type will be read from the
 126  * ELF header and no checks will be carried out against the machine type.
 127  */
 128 typedef void (*symbol_fn_t)(const char *st_name, int st_info,
 129                             uint64_t st_value, uint64_t st_size);
 130
 131 int load_elf_ram_sym(const char *filename,
 132                      uint64_t (*elf_note_fn)(void *, void *, bool),
 133                      uint64_t (*translate_fn)(void *, uint64_t),
 134                      void *translate_opaque, uint64_t *pentry,
 135                      uint64_t *lowaddr, uint64_t *highaddr, uint32_t *pflags,
 136                      int big_endian, int elf_machine,
 137                      int clear_lsb, int data_swab,
 138                      AddressSpace *as, bool load_rom, symbol_fn_t sym_cb);
 139
 140 /** load_elf_ram:
 141  * Same as load_elf_ram_sym(), but doesn't allow the caller to specify a
 142  * symbol callback function
 143  */
 144 int load_elf_ram(const char *filename,
 145                  uint64_t (*elf_note_fn)(void *, void *, bool),
 146                  uint64_t (*translate_fn)(void *, uint64_t),
 147                  void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
 148                  uint64_t *highaddr, uint32_t *pflags, int big_endian,
 149                  int elf_machine, int clear_lsb, int data_swab,
 150                  AddressSpace *as, bool load_rom);
 151
 152 /** load_elf_as:
 153  * Same as load_elf_ram(), but always loads the elf as ROM
 154  */
 155 int load_elf_as(const char *filename,
 156                 uint64_t (*elf_note_fn)(void *, void *, bool),
 157                 uint64_t (*translate_fn)(void *, uint64_t),
 158                 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
 159                 uint64_t *highaddr, uint32_t *pflags, int big_endian,
 160                 int elf_machine, int clear_lsb, int data_swab,
 161                 AddressSpace *as);
 162
 163 /** load_elf:
 164  * Same as load_elf_as(), but doesn't allow the caller to specify an
 165  * AddressSpace.
 166  */
 167 int load_elf(const char *filename,
 168              uint64_t (*elf_note_fn)(void *, void *, bool),
 169              uint64_t (*translate_fn)(void *, uint64_t),
 170              void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
 171              uint64_t *highaddr, uint32_t *pflags, int big_endian,
 172              int elf_machine, int clear_lsb, int data_swab);
 173
 174 /** load_elf_hdr:
 175  * @filename: Path of ELF file
 176  * @hdr: Buffer to populate with header data. Header data will not be
 177  * filled if set to NULL.
 178  * @is64: Set to true if the ELF is 64bit. Ignored if set to NULL
 179  * @errp: Populated with an error in failure cases
 180  *
 181  * Inspect an ELF file's header. Read its full header contents into a
 182  * buffer and/or determine if the ELF is 64bit.
 183  */
 184 void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp);
 185
 186 int load_aout(const char *filename, hwaddr addr, int max_sz,
 187               int bswap_needed, hwaddr target_page_size);
 188
 189 #define LOAD_UIMAGE_LOADADDR_INVALID (-1)
 190
 191 /** load_uimage_as:
 192  * @filename: Path of uimage file
 193  * @ep: Populated with program entry point. Ignored if NULL.
 194  * @loadaddr: load address if none specified in the image or when loading a
 195  *            ramdisk. Populated with the load address. Ignored if NULL or
 196  *            LOAD_UIMAGE_LOADADDR_INVALID (images which do not specify a load
 197  *            address will not be loadable).
 198  * @is_linux: Is set to true if the image loaded is Linux. Ignored if NULL.
 199  * @translate_fn: optional function to translate load addresses
 200  * @translate_opaque: opaque data passed to @translate_fn
 201  * @as: The AddressSpace to load the ELF to. The value of address_space_memory
 202  *      is used if nothing is supplied here.
 203  *
 204  * Loads a u-boot image into memory.
 205  *
 206  * Returns the size of the loaded image on success, -1 otherwise.
 207  */
 208 int load_uimage_as(const char *filename, hwaddr *ep,
 209                    hwaddr *loadaddr, int *is_linux,
 210                    uint64_t (*translate_fn)(void *, uint64_t),
 211                    void *translate_opaque, AddressSpace *as);
 212
 213 /** load_uimage:
 214  * Same as load_uimage_as(), but doesn't allow the caller to specify an
 215  * AddressSpace.
 216  */
 217 int load_uimage(const char *filename, hwaddr *ep,
 218                 hwaddr *loadaddr, int *is_linux,
 219                 uint64_t (*translate_fn)(void *, uint64_t),
 220                 void *translate_opaque);
 221
 222 /**
 223  * load_ramdisk_as:
 224  * @filename: Path to the ramdisk image
 225  * @addr: Memory address to load the ramdisk to
 226  * @max_sz: Maximum allowed ramdisk size (for non-u-boot ramdisks)
 227  * @as: The AddressSpace to load the ELF to. The value of address_space_memory
 228  *      is used if nothing is supplied here.
 229  *
 230  * Load a ramdisk image with U-Boot header to the specified memory
 231  * address.
 232  *
 233  * Returns the size of the loaded image on success, -1 otherwise.
 234  */
 235 int load_ramdisk_as(const char *filename, hwaddr addr, uint64_t max_sz,
 236                     AddressSpace *as);
 237
 238 /**
 239  * load_ramdisk:
 240  * Same as load_ramdisk_as(), but doesn't allow the caller to specify
 241  * an AddressSpace.
 242  */
 243 int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz);
 244
 245 ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen);
 246
 247 ssize_t read_targphys(const char *name,
 248                       int fd, hwaddr dst_addr, size_t nbytes);
 249 void pstrcpy_targphys(const char *name,
 250                       hwaddr dest, int buf_size,
 251                       const char *source);
 252
 253 extern bool option_rom_has_mr;
 254 extern bool rom_file_has_mr;
 255
 256 int rom_add_file(const char *file, const char *fw_dir,
 257                  hwaddr addr, int32_t bootindex,
 258                  bool option_rom, MemoryRegion *mr, AddressSpace *as);
 259 MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
 260                            size_t max_len, hwaddr addr,
 261                            const char *fw_file_name,
 262                            FWCfgCallback fw_callback,
 263                            void *callback_opaque, AddressSpace *as,
 264                            bool read_only);
 265 int rom_add_elf_program(const char *name, GMappedFile *mapped_file, void *data,
 266                         size_t datasize, size_t romsize, hwaddr addr,
 267                         AddressSpace *as);
 268 int rom_check_and_register_reset(void);
 269 void rom_set_fw(FWCfgState *f);
 270 void rom_set_order_override(int order);
 271 void rom_reset_order_override(void);
 272
 273 /**
 274  * rom_transaction_begin:
 275  *
 276  * Call this before of a series of rom_add_*() calls.  Call
 277  * rom_transaction_end() afterwards to commit or abort.  These functions are
 278  * useful for undoing a series of rom_add_*() calls if image file loading fails
 279  * partway through.
 280  */
 281 void rom_transaction_begin(void);
 282
 283 /**
 284  * rom_transaction_end:
 285  * @commit: true to commit added roms, false to drop added roms
 286  *
 287  * Call this after a series of rom_add_*() calls.  See rom_transaction_begin().
 288  */
 289 void rom_transaction_end(bool commit);
 290
 291 int rom_copy(uint8_t *dest, hwaddr addr, size_t size);
 292 void *rom_ptr(hwaddr addr, size_t size);
 293 void hmp_info_roms(Monitor *mon, const QDict *qdict);
 294
 295 #define rom_add_file_fixed(_f, _a, _i)          \
 296     rom_add_file(_f, NULL, _a, _i, false, NULL, NULL)
 297 #define rom_add_blob_fixed(_f, _b, _l, _a)      \
 298     rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, NULL, true)
 299 #define rom_add_file_mr(_f, _mr, _i)            \
 300     rom_add_file(_f, NULL, 0, _i, false, _mr, NULL)
 301 #define rom_add_file_as(_f, _as, _i)            \
 302     rom_add_file(_f, NULL, 0, _i, false, NULL, _as)
 303 #define rom_add_file_fixed_as(_f, _a, _i, _as)          \
 304     rom_add_file(_f, NULL, _a, _i, false, NULL, _as)
 305 #define rom_add_blob_fixed_as(_f, _b, _l, _a, _as)      \
 306     rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, _as, true)
 307
 308 #define PC_ROM_MIN_VGA     0xc0000
 309 #define PC_ROM_MIN_OPTION  0xc8000
 310 #define PC_ROM_MAX         0xe0000
 311 #define PC_ROM_ALIGN       0x800
 312 #define PC_ROM_SIZE        (PC_ROM_MAX - PC_ROM_MIN_VGA)
 313
 314 int rom_add_vga(const char *file);
 315 int rom_add_option(const char *file, int32_t bootindex);
 316
 317 /* This is the usual maximum in uboot, so if a uImage overflows this, it would
 318  * overflow on real hardware too. */
 319 #define UBOOT_MAX_GUNZIP_BYTES (64 << 20)
 320
 321 #endif