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 ssize_t 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 ssize_t load_targphys_hex_as(const char *filename, hwaddr *entry, 57 AddressSpace *as); 58 59 /** load_image_targphys: 60 * Same as load_image_targphys_as(), but doesn't allow the caller to specify 61 * an AddressSpace. 62 */ 63 ssize_t load_image_targphys(const char *filename, hwaddr, 64 uint64_t max_sz); 65 66 /** 67 * load_image_mr: load an image into a memory region 68 * @filename: Path to the image file 69 * @mr: Memory Region to load into 70 * 71 * Load the specified file into the memory region. 72 * The file loaded is registered as a ROM, so its contents will be 73 * reinstated whenever the system is reset. 74 * If the file is larger than the memory region's size the call will fail. 75 * Returns -1 on failure, or the size of the file. 76 */ 77 ssize_t load_image_mr(const char *filename, MemoryRegion *mr); 78 79 /* This is the limit on the maximum uncompressed image size that 80 * load_image_gzipped_buffer() and load_image_gzipped() will read. It prevents 81 * g_malloc() in those functions from allocating a huge amount of memory. 82 */ 83 #define LOAD_IMAGE_MAX_GUNZIP_BYTES (256 << 20) 84 85 ssize_t load_image_gzipped_buffer(const char *filename, uint64_t max_sz, 86 uint8_t **buffer); 87 ssize_t load_image_gzipped(const char *filename, hwaddr addr, uint64_t max_sz); 88 89 /** 90 * unpack_efi_zboot_image: 91 * @buffer: pointer to a variable holding the address of a buffer containing the 92 * image 93 * @size: pointer to a variable holding the size of the buffer 94 * 95 * Check whether the buffer contains a EFI zboot image, and if it does, extract 96 * the compressed payload and decompress it into a new buffer. If successful, 97 * the old buffer is freed, and the *buffer and size variables pointed to by the 98 * function arguments are updated to refer to the newly populated buffer. 99 * 100 * Returns 0 if the image could not be identified as a EFI zboot image. 101 * Returns -1 if the buffer contents were identified as a EFI zboot image, but 102 * unpacking failed for any reason. 103 * Returns the size of the decompressed payload if decompression was performed 104 * successfully. 105 */ 106 ssize_t unpack_efi_zboot_image(uint8_t **buffer, int *size); 107 108 #define ELF_LOAD_FAILED -1 109 #define ELF_LOAD_NOT_ELF -2 110 #define ELF_LOAD_WRONG_ARCH -3 111 #define ELF_LOAD_WRONG_ENDIAN -4 112 #define ELF_LOAD_TOO_BIG -5 113 const char *load_elf_strerror(ssize_t error); 114 115 /** load_elf_ram_sym: 116 * @filename: Path of ELF file 117 * @elf_note_fn: optional function to parse ELF Note type 118 * passed via @translate_opaque 119 * @translate_fn: optional function to translate load addresses 120 * @translate_opaque: opaque data passed to @translate_fn 121 * @pentry: Populated with program entry point. Ignored if NULL. 122 * @lowaddr: Populated with lowest loaded address. Ignored if NULL. 123 * @highaddr: Populated with highest loaded address. Ignored if NULL. 124 * @pflags: Populated with ELF processor-specific flags. Ignore if NULL. 125 * @bigendian: Expected ELF endianness. 0 for LE otherwise BE 126 * @elf_machine: Expected ELF machine type 127 * @clear_lsb: Set to mask off LSB of addresses (Some architectures use 128 * this for non-address data) 129 * @data_swab: Set to order of byte swapping for data. 0 for no swap, 1 130 * for swapping bytes within halfwords, 2 for bytes within 131 * words and 3 for within doublewords. 132 * @as: The AddressSpace to load the ELF to. The value of address_space_memory 133 * is used if nothing is supplied here. 134 * @load_rom : Load ELF binary as ROM 135 * @sym_cb: Callback function for symbol table entries 136 * 137 * Load an ELF file's contents to the emulated system's address space. 138 * Clients may optionally specify a callback to perform address 139 * translations. @pentry, @lowaddr and @highaddr are optional pointers 140 * which will be populated with various load information. @bigendian and 141 * @elf_machine give the expected endianness and machine for the ELF the 142 * load will fail if the target ELF does not match. Some architectures 143 * have some architecture-specific behaviours that come into effect when 144 * their particular values for @elf_machine are set. 145 * If @elf_machine is EM_NONE then the machine type will be read from the 146 * ELF header and no checks will be carried out against the machine type. 147 */ 148 typedef void (*symbol_fn_t)(const char *st_name, int st_info, 149 uint64_t st_value, uint64_t st_size); 150 151 ssize_t load_elf_ram_sym(const char *filename, 152 uint64_t (*elf_note_fn)(void *, void *, bool), 153 uint64_t (*translate_fn)(void *, uint64_t), 154 void *translate_opaque, uint64_t *pentry, 155 uint64_t *lowaddr, uint64_t *highaddr, 156 uint32_t *pflags, int big_endian, int elf_machine, 157 int clear_lsb, int data_swab, 158 AddressSpace *as, bool load_rom, symbol_fn_t sym_cb); 159 160 /** load_elf_ram: 161 * Same as load_elf_ram_sym(), but doesn't allow the caller to specify a 162 * symbol callback function 163 */ 164 ssize_t load_elf_ram(const char *filename, 165 uint64_t (*elf_note_fn)(void *, void *, bool), 166 uint64_t (*translate_fn)(void *, uint64_t), 167 void *translate_opaque, uint64_t *pentry, 168 uint64_t *lowaddr, uint64_t *highaddr, uint32_t *pflags, 169 int big_endian, int elf_machine, int clear_lsb, 170 int data_swab, AddressSpace *as, bool load_rom); 171 172 /** load_elf_as: 173 * Same as load_elf_ram(), but always loads the elf as ROM 174 */ 175 ssize_t load_elf_as(const char *filename, 176 uint64_t (*elf_note_fn)(void *, void *, bool), 177 uint64_t (*translate_fn)(void *, uint64_t), 178 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, 179 uint64_t *highaddr, uint32_t *pflags, int big_endian, 180 int elf_machine, int clear_lsb, int data_swab, 181 AddressSpace *as); 182 183 /** load_elf: 184 * Same as load_elf_as(), but doesn't allow the caller to specify an 185 * AddressSpace. 186 */ 187 ssize_t load_elf(const char *filename, 188 uint64_t (*elf_note_fn)(void *, void *, bool), 189 uint64_t (*translate_fn)(void *, uint64_t), 190 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr, 191 uint64_t *highaddr, uint32_t *pflags, int big_endian, 192 int elf_machine, int clear_lsb, int data_swab); 193 194 /** load_elf_hdr: 195 * @filename: Path of ELF file 196 * @hdr: Buffer to populate with header data. Header data will not be 197 * filled if set to NULL. 198 * @is64: Set to true if the ELF is 64bit. Ignored if set to NULL 199 * @errp: Populated with an error in failure cases 200 * 201 * Inspect an ELF file's header. Read its full header contents into a 202 * buffer and/or determine if the ELF is 64bit. 203 */ 204 void load_elf_hdr(const char *filename, void *hdr, bool *is64, Error **errp); 205 206 ssize_t load_aout(const char *filename, hwaddr addr, int max_sz, 207 int bswap_needed, hwaddr target_page_size); 208 209 #define LOAD_UIMAGE_LOADADDR_INVALID (-1) 210 211 /** load_uimage_as: 212 * @filename: Path of uimage file 213 * @ep: Populated with program entry point. Ignored if NULL. 214 * @loadaddr: load address if none specified in the image or when loading a 215 * ramdisk. Populated with the load address. Ignored if NULL or 216 * LOAD_UIMAGE_LOADADDR_INVALID (images which do not specify a load 217 * address will not be loadable). 218 * @is_linux: Is set to true if the image loaded is Linux. Ignored if NULL. 219 * @translate_fn: optional function to translate load addresses 220 * @translate_opaque: opaque data passed to @translate_fn 221 * @as: The AddressSpace to load the ELF to. The value of address_space_memory 222 * is used if nothing is supplied here. 223 * 224 * Loads a u-boot image into memory. 225 * 226 * Returns the size of the loaded image on success, -1 otherwise. 227 */ 228 ssize_t load_uimage_as(const char *filename, hwaddr *ep, 229 hwaddr *loadaddr, int *is_linux, 230 uint64_t (*translate_fn)(void *, uint64_t), 231 void *translate_opaque, AddressSpace *as); 232 233 /** load_uimage: 234 * Same as load_uimage_as(), but doesn't allow the caller to specify an 235 * AddressSpace. 236 */ 237 ssize_t load_uimage(const char *filename, hwaddr *ep, 238 hwaddr *loadaddr, int *is_linux, 239 uint64_t (*translate_fn)(void *, uint64_t), 240 void *translate_opaque); 241 242 /** 243 * load_ramdisk_as: 244 * @filename: Path to the ramdisk image 245 * @addr: Memory address to load the ramdisk to 246 * @max_sz: Maximum allowed ramdisk size (for non-u-boot ramdisks) 247 * @as: The AddressSpace to load the ELF to. The value of address_space_memory 248 * is used if nothing is supplied here. 249 * 250 * Load a ramdisk image with U-Boot header to the specified memory 251 * address. 252 * 253 * Returns the size of the loaded image on success, -1 otherwise. 254 */ 255 ssize_t load_ramdisk_as(const char *filename, hwaddr addr, uint64_t max_sz, 256 AddressSpace *as); 257 258 /** 259 * load_ramdisk: 260 * Same as load_ramdisk_as(), but doesn't allow the caller to specify 261 * an AddressSpace. 262 */ 263 ssize_t load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz); 264 265 ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen); 266 267 ssize_t read_targphys(const char *name, 268 int fd, hwaddr dst_addr, size_t nbytes); 269 void pstrcpy_targphys(const char *name, 270 hwaddr dest, int buf_size, 271 const char *source); 272 273 ssize_t rom_add_file(const char *file, const char *fw_dir, 274 hwaddr addr, int32_t bootindex, 275 bool has_option_rom, MemoryRegion *mr, AddressSpace *as); 276 MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len, 277 size_t max_len, hwaddr addr, 278 const char *fw_file_name, 279 FWCfgCallback fw_callback, 280 void *callback_opaque, AddressSpace *as, 281 bool read_only); 282 int rom_add_elf_program(const char *name, GMappedFile *mapped_file, void *data, 283 size_t datasize, size_t romsize, hwaddr addr, 284 AddressSpace *as); 285 int rom_check_and_register_reset(void); 286 void rom_set_fw(FWCfgState *f); 287 void rom_set_order_override(int order); 288 void rom_reset_order_override(void); 289 290 /** 291 * rom_transaction_begin: 292 * 293 * Call this before of a series of rom_add_*() calls. Call 294 * rom_transaction_end() afterwards to commit or abort. These functions are 295 * useful for undoing a series of rom_add_*() calls if image file loading fails 296 * partway through. 297 */ 298 void rom_transaction_begin(void); 299 300 /** 301 * rom_transaction_end: 302 * @commit: true to commit added roms, false to drop added roms 303 * 304 * Call this after a series of rom_add_*() calls. See rom_transaction_begin(). 305 */ 306 void rom_transaction_end(bool commit); 307 308 int rom_copy(uint8_t *dest, hwaddr addr, size_t size); 309 void *rom_ptr(hwaddr addr, size_t size); 310 /** 311 * rom_ptr_for_as: Return a pointer to ROM blob data for the address 312 * @as: AddressSpace to look for the ROM blob in 313 * @addr: Address within @as 314 * @size: size of data required in bytes 315 * 316 * Returns: pointer into the data which backs the matching ROM blob, 317 * or NULL if no blob covers the address range. 318 * 319 * This function looks for a ROM blob which covers the specified range 320 * of bytes of length @size starting at @addr within the address space 321 * @as. This is useful for code which runs as part of board 322 * initialization or CPU reset which wants to read data that is part 323 * of a user-supplied guest image or other guest memory contents, but 324 * which runs before the ROM loader's reset function has copied the 325 * blobs into guest memory. 326 * 327 * rom_ptr_for_as() will look not just for blobs loaded directly to 328 * the specified address, but also for blobs which were loaded to an 329 * alias of the region at a different location in the AddressSpace. 330 * In other words, if a machine model has RAM at address 0x0000_0000 331 * which is aliased to also appear at 0x1000_0000, rom_ptr_for_as() 332 * will return the correct data whether the guest image was linked and 333 * loaded at 0x0000_0000 or 0x1000_0000. Contrast rom_ptr(), which 334 * will only return data if the image load address is an exact match 335 * with the queried address. 336 * 337 * New code should prefer to use rom_ptr_for_as() instead of 338 * rom_ptr(). 339 */ 340 void *rom_ptr_for_as(AddressSpace *as, hwaddr addr, size_t size); 341 void hmp_info_roms(Monitor *mon, const QDict *qdict); 342 343 #define rom_add_file_fixed(_f, _a, _i) \ 344 rom_add_file(_f, NULL, _a, _i, false, NULL, NULL) 345 #define rom_add_blob_fixed(_f, _b, _l, _a) \ 346 rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, NULL, true) 347 #define rom_add_file_mr(_f, _mr, _i) \ 348 rom_add_file(_f, NULL, 0, _i, false, _mr, NULL) 349 #define rom_add_file_as(_f, _as, _i) \ 350 rom_add_file(_f, NULL, 0, _i, false, NULL, _as) 351 #define rom_add_file_fixed_as(_f, _a, _i, _as) \ 352 rom_add_file(_f, NULL, _a, _i, false, NULL, _as) 353 #define rom_add_blob_fixed_as(_f, _b, _l, _a, _as) \ 354 rom_add_blob(_f, _b, _l, _l, _a, NULL, NULL, NULL, _as, true) 355 356 ssize_t rom_add_vga(const char *file); 357 ssize_t rom_add_option(const char *file, int32_t bootindex); 358 359 /* This is the usual maximum in uboot, so if a uImage overflows this, it would 360 * overflow on real hardware too. */ 361 #define UBOOT_MAX_GUNZIP_BYTES (64 << 20) 362 363 typedef struct RomGap { 364 hwaddr base; 365 size_t size; 366 } RomGap; 367 368 /** 369 * rom_find_largest_gap_between: return largest gap between ROMs in given range 370 * 371 * Given a range of addresses, this function finds the largest 372 * contiguous subrange which has no ROMs loaded to it. That is, 373 * it finds the biggest gap which is free for use for other things. 374 */ 375 RomGap rom_find_largest_gap_between(hwaddr base, size_t size); 376 377 #endif 378