1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * (C) Copyright 2000-2009 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 */ 6 7 #ifndef __COMMON_H_ 8 #define __COMMON_H_ 1 9 10 #ifndef __ASSEMBLY__ /* put C only stuff in this section */ 11 12 typedef unsigned char uchar; 13 typedef volatile unsigned long vu_long; 14 typedef volatile unsigned short vu_short; 15 typedef volatile unsigned char vu_char; 16 17 /* Allow sharing constants with type modifiers between C and assembly. */ 18 #define _AC(X, Y) (X##Y) 19 20 #include <config.h> 21 #include <errno.h> 22 #include <time.h> 23 #include <asm-offsets.h> 24 #include <linux/bitops.h> 25 #include <linux/bug.h> 26 #include <linux/delay.h> 27 #include <linux/types.h> 28 #include <linux/printk.h> 29 #include <linux/string.h> 30 #include <linux/stringify.h> 31 #include <asm/ptrace.h> 32 #include <stdarg.h> 33 #include <stdio.h> 34 #include <linux/kernel.h> 35 36 #include <part.h> 37 #include <flash.h> 38 #include <image.h> 39 40 /* Bring in printf format macros if inttypes.h is included */ 41 #define __STDC_FORMAT_MACROS 42 43 #ifdef __LP64__ 44 #define CONFIG_SYS_SUPPORT_64BIT_DATA 45 #endif 46 47 #include <log.h> 48 49 typedef void (interrupt_handler_t)(void *); 50 51 #include <asm/u-boot.h> /* boot information for Linux kernel */ 52 #include <asm/global_data.h> /* global data used for startup functions */ 53 54 #if defined(CONFIG_ENV_IS_EMBEDDED) 55 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN 56 #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \ 57 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \ 58 defined(CONFIG_ENV_IS_IN_NVRAM) 59 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE) 60 #else 61 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN 62 #endif 63 64 /* startup functions, used in: 65 * common/board_f.c 66 * common/init/board_init.c 67 * common/board_r.c 68 * common/board_info.c 69 */ 70 #include <init.h> 71 72 /* 73 * Function Prototypes 74 */ 75 void hang (void) __attribute__ ((noreturn)); 76 77 int cpu_init(void); 78 79 #include <display_options.h> 80 81 /* common/main.c */ 82 void main_loop (void); 83 int run_command(const char *cmd, int flag); 84 int run_command_repeatable(const char *cmd, int flag); 85 86 /** 87 * Run a list of commands separated by ; or even \0 88 * 89 * Note that if 'len' is not -1, then the command does not need to be nul 90 * terminated, Memory will be allocated for the command in that case. 91 * 92 * @param cmd List of commands to run, each separated bu semicolon 93 * @param len Length of commands excluding terminator if known (-1 if not) 94 * @param flag Execution flags (CMD_FLAG_...) 95 * @return 0 on success, or != 0 on error. 96 */ 97 int run_command_list(const char *cmd, int len, int flag); 98 99 int checkflash(void); 100 int checkdram(void); 101 extern u8 __dtb_dt_begin[]; /* embedded device tree blob */ 102 extern u8 __dtb_dt_spl_begin[]; /* embedded device tree blob for SPL/TPL */ 103 int mdm_init(void); 104 105 /** 106 * Show the DRAM size in a board-specific way 107 * 108 * This is used by boards to display DRAM information in their own way. 109 * 110 * @param size Size of DRAM (which should be displayed along with other info) 111 */ 112 void board_show_dram(phys_size_t size); 113 114 /** 115 * arch_fixup_fdt() - Write arch-specific information to fdt 116 * 117 * Defined in arch/$(ARCH)/lib/bootm-fdt.c 118 * 119 * @blob: FDT blob to write to 120 * @return 0 if ok, or -ve FDT_ERR_... on failure 121 */ 122 int arch_fixup_fdt(void *blob); 123 124 /* common/flash.c */ 125 void flash_perror (int); 126 127 /* common/cmd_source.c */ 128 int source (ulong addr, const char *fit_uname); 129 130 extern ulong load_addr; /* Default Load Address */ 131 extern ulong save_addr; /* Default Save Address */ 132 extern ulong save_size; /* Default Save Size */ 133 134 /* common/cmd_net.c */ 135 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); 136 137 /* common/cmd_fat.c */ 138 int do_fat_fsload(cmd_tbl_t *, int, int, char * const []); 139 140 /* common/cmd_ext2.c */ 141 int do_ext2load(cmd_tbl_t *, int, int, char * const []); 142 143 /* common/cmd_nvedit.c */ 144 int env_init (void); 145 void env_relocate (void); 146 int envmatch (uchar *, int); 147 148 /** 149 * env_get() - Look up the value of an environment variable 150 * 151 * In U-Boot proper this can be called before relocation (which is when the 152 * environment is loaded from storage, i.e. GD_FLG_ENV_READY is 0). In that 153 * case this function calls env_get_f(). 154 * 155 * @varname: Variable to look up 156 * @return value of variable, or NULL if not found 157 */ 158 char *env_get(const char *varname); 159 160 /** 161 * env_get_f() - Look up the value of an environment variable (early) 162 * 163 * This function is called from env_get() if the environment has not been 164 * loaded yet (GD_FLG_ENV_READY flag is 0). Some environment locations will 165 * support reading the value (slowly) and some will not. 166 * 167 * @varname: Variable to look up 168 * @return value of variable, or NULL if not found 169 */ 170 int env_get_f(const char *name, char *buf, unsigned len); 171 172 /** 173 * env_get_ulong() - Return an environment variable as an integer value 174 * 175 * Most U-Boot environment variables store hex values. For those which store 176 * (e.g.) base-10 integers, this function can be used to read the value. 177 * 178 * @name: Variable to look up 179 * @base: Base to use (e.g. 10 for base 10, 2 for binary) 180 * @default_val: Default value to return if no value is found 181 * @return the value found, or @default_val if none 182 */ 183 ulong env_get_ulong(const char *name, int base, ulong default_val); 184 185 /** 186 * env_get_hex() - Return an environment variable as a hex value 187 * 188 * Decode an environment as a hex number (it may or may not have a 0x 189 * prefix). If the environment variable cannot be found, or does not start 190 * with hex digits, the default value is returned. 191 * 192 * @varname: Variable to decode 193 * @default_val: Value to return on error 194 */ 195 ulong env_get_hex(const char *varname, ulong default_val); 196 197 /* 198 * Read an environment variable as a boolean 199 * Return -1 if variable does not exist (default to true) 200 */ 201 int env_get_yesno(const char *var); 202 203 /** 204 * env_set() - set an environment variable 205 * 206 * This sets or deletes the value of an environment variable. For setting the 207 * value the variable is created if it does not already exist. 208 * 209 * @varname: Variable to adjust 210 * @value: Value to set for the variable, or NULL or "" to delete the variable 211 * @return 0 if OK, 1 on error 212 */ 213 int env_set(const char *varname, const char *value); 214 215 /** 216 * env_set_ulong() - set an environment variable to an integer 217 * 218 * @varname: Variable to adjust 219 * @value: Value to set for the variable (will be converted to a string) 220 * @return 0 if OK, 1 on error 221 */ 222 int env_set_ulong(const char *varname, ulong value); 223 224 /** 225 * env_set_hex() - set an environment variable to a hex value 226 * 227 * @varname: Variable to adjust 228 * @value: Value to set for the variable (will be converted to a hex string) 229 * @return 0 if OK, 1 on error 230 */ 231 int env_set_hex(const char *varname, ulong value); 232 233 /** 234 * env_set_addr - Set an environment variable to an address in hex 235 * 236 * @varname: Environment variable to set 237 * @addr: Value to set it to 238 * @return 0 if ok, 1 on error 239 */ 240 static inline int env_set_addr(const char *varname, const void *addr) 241 { 242 return env_set_hex(varname, (ulong)addr); 243 } 244 245 #ifdef CONFIG_AUTO_COMPLETE 246 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf); 247 #endif 248 int get_env_id (void); 249 250 void pci_init_board(void); 251 252 /* common/exports.c */ 253 void jumptable_init(void); 254 255 /* common/kallsysm.c */ 256 const char *symbol_lookup(unsigned long addr, unsigned long *caddr); 257 258 /* common/memsize.c */ 259 long get_ram_size (long *, long); 260 phys_size_t get_effective_memsize(void); 261 262 /* $(BOARD)/$(BOARD).c */ 263 void reset_phy (void); 264 void fdc_hw_init (void); 265 266 /* $(BOARD)/eeprom.c */ 267 #ifdef CONFIG_CMD_EEPROM 268 void eeprom_init (int bus); 269 int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt); 270 int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt); 271 #else 272 /* 273 * Some EEPROM code is depecated because it used the legacy I2C interface. Add 274 * some macros here so we don't have to touch every one of those uses 275 */ 276 #define eeprom_init(bus) 277 #define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS) 278 #define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS) 279 #endif 280 281 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C) && defined(CONFIG_SYS_I2C_EEPROM_ADDR) 282 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR 283 #endif 284 285 #if defined(CONFIG_MPC8XX_SPI) 286 extern void spi_init_f (void); 287 extern void spi_init_r (void); 288 extern ssize_t spi_read (uchar *, int, uchar *, int); 289 extern ssize_t spi_write (uchar *, int, uchar *, int); 290 #endif 291 292 /* $(BOARD)/$(BOARD).c */ 293 int board_early_init_f (void); 294 int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */ 295 int board_late_init (void); 296 int board_postclk_init (void); /* after clocks/timebase, before env/serial */ 297 int board_early_init_r (void); 298 299 #if defined(CONFIG_SYS_DRAM_TEST) 300 int testdram(void); 301 #endif /* CONFIG_SYS_DRAM_TEST */ 302 303 /* $(CPU)/start.S */ 304 int icache_status (void); 305 void icache_enable (void); 306 void icache_disable(void); 307 int dcache_status (void); 308 void dcache_enable (void); 309 void dcache_disable(void); 310 void mmu_disable(void); 311 #if defined(CONFIG_ARM) 312 void relocate_code(ulong); 313 #else 314 void relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn)); 315 #endif 316 ulong get_endaddr (void); 317 void trap_init (ulong); 318 319 /* $(CPU)/cpu.c */ 320 static inline int cpumask_next(int cpu, unsigned int mask) 321 { 322 for (cpu++; !((1 << cpu) & mask); cpu++) 323 ; 324 325 return cpu; 326 } 327 328 #define for_each_cpu(iter, cpu, num_cpus, mask) \ 329 for (iter = 0, cpu = cpumask_next(-1, mask); \ 330 iter < num_cpus; \ 331 iter++, cpu = cpumask_next(cpu, mask)) \ 332 333 int cpu_numcores (void); 334 int cpu_num_dspcores(void); 335 u32 cpu_mask (void); 336 u32 cpu_dsp_mask(void); 337 int is_core_valid (unsigned int); 338 339 void s_init(void); 340 341 int checkcpu (void); 342 int checkicache (void); 343 int checkdcache (void); 344 void upmconfig (unsigned int, unsigned int *, unsigned int); 345 ulong get_tbclk (void); 346 void reset_misc (void); 347 void reset_cpu (ulong addr); 348 void ft_cpu_setup(void *blob, bd_t *bd); 349 void ft_pci_setup(void *blob, bd_t *bd); 350 351 void smp_set_core_boot_addr(unsigned long addr, int corenr); 352 void smp_kick_all_cpus(void); 353 354 /* $(CPU)/serial.c */ 355 int serial_init (void); 356 void serial_setbrg (void); 357 void serial_putc (const char); 358 void serial_putc_raw(const char); 359 void serial_puts (const char *); 360 int serial_getc (void); 361 int serial_tstc (void); 362 363 /* $(CPU)/speed.c */ 364 int get_clocks (void); 365 ulong get_bus_freq (ulong); 366 int get_serial_clock(void); 367 368 /* $(CPU)/interrupts.c */ 369 int interrupt_init (void); 370 void timer_interrupt (struct pt_regs *); 371 void external_interrupt (struct pt_regs *); 372 void irq_install_handler(int, interrupt_handler_t *, void *); 373 void irq_free_handler (int); 374 void reset_timer (void); 375 376 /* Return value of monotonic microsecond timer */ 377 unsigned long timer_get_us(void); 378 379 void enable_interrupts (void); 380 int disable_interrupts (void); 381 382 /* $(CPU)/.../commproc.c */ 383 int dpram_init (void); 384 uint dpram_base(void); 385 uint dpram_base_align(uint align); 386 uint dpram_alloc(uint size); 387 uint dpram_alloc_align(uint size,uint align); 388 void bootcount_store (ulong); 389 ulong bootcount_load (void); 390 #define BOOTCOUNT_MAGIC 0xB001C041 391 392 /* $(CPU)/.../<eth> */ 393 void mii_init (void); 394 395 /* $(CPU)/.../lcd.c */ 396 ulong lcd_setmem (ulong); 397 398 /* $(CPU)/.../video.c */ 399 ulong video_setmem (ulong); 400 401 /* arch/$(ARCH)/lib/cache.c */ 402 void enable_caches(void); 403 void flush_cache (unsigned long, unsigned long); 404 void flush_dcache_all(void); 405 void flush_dcache_range(unsigned long start, unsigned long stop); 406 void invalidate_dcache_range(unsigned long start, unsigned long stop); 407 void invalidate_dcache_all(void); 408 void invalidate_icache_all(void); 409 410 enum { 411 /* Disable caches (else flush caches but leave them active) */ 412 CBL_DISABLE_CACHES = 1 << 0, 413 CBL_SHOW_BOOTSTAGE_REPORT = 1 << 1, 414 415 CBL_ALL = 3, 416 }; 417 418 /** 419 * Clean up ready for linux 420 * 421 * @param flags Flags to control what is done 422 */ 423 int cleanup_before_linux_select(int flags); 424 425 /* arch/$(ARCH)/lib/ticks.S */ 426 uint64_t get_ticks(void); 427 void wait_ticks (unsigned long); 428 429 /* arch/$(ARCH)/lib/time.c */ 430 ulong usec2ticks (unsigned long usec); 431 ulong ticks2usec (unsigned long ticks); 432 433 /* lib/gunzip.c */ 434 int gzip_parse_header(const unsigned char *src, unsigned long len); 435 int gunzip(void *, int, unsigned char *, unsigned long *); 436 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp, 437 int stoponerr, int offset); 438 439 /** 440 * gzwrite progress indicators: defined weak to allow board-specific 441 * overrides: 442 * 443 * gzwrite_progress_init called on startup 444 * gzwrite_progress called during decompress/write loop 445 * gzwrite_progress_finish called at end of loop to 446 * indicate success (retcode=0) or failure 447 */ 448 void gzwrite_progress_init(u64 expected_size); 449 450 void gzwrite_progress(int iteration, 451 u64 bytes_written, 452 u64 total_bytes); 453 454 void gzwrite_progress_finish(int retcode, 455 u64 totalwritten, 456 u64 totalsize, 457 u32 expected_crc, 458 u32 calculated_crc); 459 460 /** 461 * decompress and write gzipped image from memory to block device 462 * 463 * @param src compressed image address 464 * @param len compressed image length in bytes 465 * @param dev block device descriptor 466 * @param szwritebuf bytes per write (pad to erase size) 467 * @param startoffs offset in bytes of first write 468 * @param szexpected expected uncompressed length 469 * may be zero to use gzip trailer 470 * for files under 4GiB 471 */ 472 int gzwrite(unsigned char *src, int len, 473 struct blk_desc *dev, 474 unsigned long szwritebuf, 475 u64 startoffs, 476 u64 szexpected); 477 478 /* lib/lz4_wrapper.c */ 479 int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn); 480 481 /* lib/qsort.c */ 482 void qsort(void *base, size_t nmemb, size_t size, 483 int(*compar)(const void *, const void *)); 484 int strcmp_compar(const void *, const void *); 485 486 /* lib/uuid.c */ 487 #include <uuid.h> 488 489 /* lib/vsprintf.c */ 490 #include <vsprintf.h> 491 492 /* lib/strmhz.c */ 493 char * strmhz(char *buf, unsigned long hz); 494 495 /* lib/crc32.c */ 496 #include <u-boot/crc.h> 497 498 /* lib/rand.c */ 499 #define RAND_MAX -1U 500 void srand(unsigned int seed); 501 unsigned int rand(void); 502 unsigned int rand_r(unsigned int *seedp); 503 504 /* 505 * STDIO based functions (can always be used) 506 */ 507 /* serial stuff */ 508 int serial_printf (const char *fmt, ...) 509 __attribute__ ((format (__printf__, 1, 2))); 510 511 /* lib/gzip.c */ 512 int gzip(void *dst, unsigned long *lenp, 513 unsigned char *src, unsigned long srclen); 514 int zzip(void *dst, unsigned long *lenp, unsigned char *src, 515 unsigned long srclen, int stoponerr, 516 int (*func)(unsigned long, unsigned long)); 517 518 /* lib/net_utils.c */ 519 #include <net.h> 520 static inline struct in_addr env_get_ip(char *var) 521 { 522 return string_to_ip(env_get(var)); 523 } 524 525 int pcmcia_init (void); 526 527 #ifdef CONFIG_LED_STATUS 528 # include <status_led.h> 529 #endif 530 531 #include <bootstage.h> 532 533 #ifdef CONFIG_SHOW_ACTIVITY 534 void show_activity(int arg); 535 #endif 536 537 /* Multicore arch functions */ 538 #ifdef CONFIG_MP 539 int cpu_status(int nr); 540 int cpu_reset(int nr); 541 int cpu_disable(int nr); 542 int cpu_release(int nr, int argc, char * const argv[]); 543 #endif 544 545 #else /* __ASSEMBLY__ */ 546 547 /* Drop a C type modifier (like in 3UL) for constants used in assembly. */ 548 #define _AC(X, Y) X 549 550 #endif /* __ASSEMBLY__ */ 551 552 /* Put only stuff here that the assembler can digest */ 553 554 /* Declare an unsigned long constant digestable both by C and an assembler. */ 555 #define UL(x) _AC(x, UL) 556 557 #ifdef CONFIG_POST 558 #define CONFIG_HAS_POST 559 #ifndef CONFIG_POST_ALT_LIST 560 #define CONFIG_POST_STD_LIST 561 #endif 562 #endif 563 564 #ifdef CONFIG_INIT_CRITICAL 565 #error CONFIG_INIT_CRITICAL is deprecated! 566 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README. 567 #endif 568 569 #define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1)) 570 571 /* 572 * check_member() - Check the offset of a structure member 573 * 574 * @structure: Name of structure (e.g. global_data) 575 * @member: Name of member (e.g. baudrate) 576 * @offset: Expected offset in bytes 577 */ 578 #define check_member(structure, member, offset) _Static_assert( \ 579 offsetof(struct structure, member) == offset, \ 580 "`struct " #structure "` offset for `" #member "` is not " #offset) 581 582 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */ 583 #ifdef CONFIG_EFI_STUB 584 #define ll_boot_init() false 585 #else 586 #define ll_boot_init() true 587 #endif 588 589 /* Pull in stuff for the build system */ 590 #ifdef DO_DEPS_ONLY 591 # include <environment.h> 592 #endif 593 594 #endif /* __COMMON_H_ */ 595