1 /* 2 * (C) Copyright 2000-2009 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef __COMMON_H_ 9 #define __COMMON_H_ 1 10 11 #ifndef __ASSEMBLY__ /* put C only stuff in this section */ 12 13 typedef unsigned char uchar; 14 typedef volatile unsigned long vu_long; 15 typedef volatile unsigned short vu_short; 16 typedef volatile unsigned char vu_char; 17 18 /* Allow sharing constants with type modifiers between C and assembly. */ 19 #define _AC(X, Y) (X##Y) 20 21 #include <config.h> 22 #include <errno.h> 23 #include <time.h> 24 #include <asm-offsets.h> 25 #include <linux/bitops.h> 26 #include <linux/bug.h> 27 #include <linux/delay.h> 28 #include <linux/types.h> 29 #include <linux/printk.h> 30 #include <linux/string.h> 31 #include <linux/stringify.h> 32 #include <asm/ptrace.h> 33 #include <stdarg.h> 34 #include <stdio.h> 35 #include <linux/kernel.h> 36 37 #include <part.h> 38 #include <flash.h> 39 #include <image.h> 40 41 /* Bring in printf format macros if inttypes.h is included */ 42 #define __STDC_FORMAT_MACROS 43 44 #ifdef __LP64__ 45 #define CONFIG_SYS_SUPPORT_64BIT_DATA 46 #endif 47 48 #include <log.h> 49 50 typedef void (interrupt_handler_t)(void *); 51 52 #include <asm/u-boot.h> /* boot information for Linux kernel */ 53 #include <asm/global_data.h> /* global data used for startup functions */ 54 55 #if defined(CONFIG_ENV_IS_EMBEDDED) 56 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN 57 #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \ 58 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \ 59 defined(CONFIG_ENV_IS_IN_NVRAM) 60 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE) 61 #else 62 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN 63 #endif 64 65 /* 66 * Function Prototypes 67 */ 68 int dram_init(void); 69 70 /** 71 * dram_init_banksize() - Set up DRAM bank sizes 72 * 73 * This can be implemented by boards to set up the DRAM bank information in 74 * gd->bd->bi_dram(). It is called just before relocation, after dram_init() 75 * is called. 76 * 77 * If this is not provided, a default implementation will try to set up a 78 * single bank. It will do this if CONFIG_NR_DRAM_BANKS and 79 * CONFIG_SYS_SDRAM_BASE are set. The bank will have a start address of 80 * CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to 81 * get_effective_memsize(). 82 * 83 * @return 0 if OK, -ve on error 84 */ 85 int dram_init_banksize(void); 86 87 void hang (void) __attribute__ ((noreturn)); 88 89 int timer_init(void); 90 int cpu_init(void); 91 92 #include <display_options.h> 93 94 /* common/main.c */ 95 void main_loop (void); 96 int run_command(const char *cmd, int flag); 97 int run_command_repeatable(const char *cmd, int flag); 98 99 /** 100 * Run a list of commands separated by ; or even \0 101 * 102 * Note that if 'len' is not -1, then the command does not need to be nul 103 * terminated, Memory will be allocated for the command in that case. 104 * 105 * @param cmd List of commands to run, each separated bu semicolon 106 * @param len Length of commands excluding terminator if known (-1 if not) 107 * @param flag Execution flags (CMD_FLAG_...) 108 * @return 0 on success, or != 0 on error. 109 */ 110 int run_command_list(const char *cmd, int len, int flag); 111 112 /* arch/$(ARCH)/lib/board.c */ 113 void board_init_f(ulong); 114 void board_init_r(gd_t *, ulong) __attribute__ ((noreturn)); 115 116 /** 117 * ulong board_init_f_alloc_reserve - allocate reserved area 118 * 119 * This function is called by each architecture very early in the start-up 120 * code to allow the C runtime to reserve space on the stack for writable 121 * 'globals' such as GD and the malloc arena. 122 * 123 * @top: top of the reserve area, growing down. 124 * @return: bottom of reserved area 125 */ 126 ulong board_init_f_alloc_reserve(ulong top); 127 128 /** 129 * board_init_f_init_reserve - initialize the reserved area(s) 130 * 131 * This function is called once the C runtime has allocated the reserved 132 * area on the stack. It must initialize the GD at the base of that area. 133 * 134 * @base: top from which reservation was done 135 */ 136 void board_init_f_init_reserve(ulong base); 137 138 /** 139 * arch_setup_gd() - Set up the global_data pointer 140 * 141 * This pointer is special in some architectures and cannot easily be assigned 142 * to. For example on x86 it is implemented by adding a specific record to its 143 * Global Descriptor Table! So we we provide a function to carry out this task. 144 * For most architectures this can simply be: 145 * 146 * gd = gd_ptr; 147 * 148 * @gd_ptr: Pointer to global data 149 */ 150 void arch_setup_gd(gd_t *gd_ptr); 151 152 int checkboard(void); 153 int show_board_info(void); 154 int checkflash(void); 155 int checkdram(void); 156 int last_stage_init(void); 157 extern ulong monitor_flash_len; 158 int mac_read_from_eeprom(void); 159 extern u8 __dtb_dt_begin[]; /* embedded device tree blob */ 160 extern u8 __dtb_dt_spl_begin[]; /* embedded device tree blob for SPL/TPL */ 161 int set_cpu_clk_info(void); 162 int mdm_init(void); 163 int print_cpuinfo(void); 164 int update_flash_size(int flash_size); 165 int arch_early_init_r(void); 166 167 /* 168 * setup_board_extra() - Fill in extra details in the bd_t structure 169 * 170 * @return 0 if OK, -ve on error 171 */ 172 int setup_board_extra(void); 173 174 /** 175 * arch_fsp_init() - perform firmware support package init 176 * 177 * Where U-Boot relies on binary blobs to handle part of the system init, this 178 * function can be used to set up the blobs. This is used on some Intel 179 * platforms. 180 */ 181 int arch_fsp_init(void); 182 183 /** 184 * arch_cpu_init_dm() - init CPU after driver model is available 185 * 186 * This is called immediately after driver model is available before 187 * relocation. This is similar to arch_cpu_init() but is able to reference 188 * devices 189 * 190 * @return 0 if OK, -ve on error 191 */ 192 int arch_cpu_init_dm(void); 193 194 /** 195 * Reserve all necessary stacks 196 * 197 * This is used in generic board init sequence in common/board_f.c. Each 198 * architecture could provide this function to tailor the required stacks. 199 * 200 * On entry gd->start_addr_sp is pointing to the suggested top of the stack. 201 * The callee ensures gd->start_add_sp is 16-byte aligned, so architectures 202 * require only this can leave it untouched. 203 * 204 * On exit gd->start_addr_sp and gd->irq_sp should be set to the respective 205 * positions of the stack. The stack pointer(s) will be set to this later. 206 * gd->irq_sp is only required, if the architecture needs it. 207 * 208 * @return 0 if no error 209 */ 210 __weak int arch_reserve_stacks(void); 211 212 /** 213 * Show the DRAM size in a board-specific way 214 * 215 * This is used by boards to display DRAM information in their own way. 216 * 217 * @param size Size of DRAM (which should be displayed along with other info) 218 */ 219 void board_show_dram(phys_size_t size); 220 221 /** 222 * arch_fixup_fdt() - Write arch-specific information to fdt 223 * 224 * Defined in arch/$(ARCH)/lib/bootm-fdt.c 225 * 226 * @blob: FDT blob to write to 227 * @return 0 if ok, or -ve FDT_ERR_... on failure 228 */ 229 int arch_fixup_fdt(void *blob); 230 231 int reserve_mmu(void); 232 /* common/flash.c */ 233 void flash_perror (int); 234 235 /* common/cmd_source.c */ 236 int source (ulong addr, const char *fit_uname); 237 238 extern ulong load_addr; /* Default Load Address */ 239 extern ulong save_addr; /* Default Save Address */ 240 extern ulong save_size; /* Default Save Size */ 241 242 /* common/cmd_net.c */ 243 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); 244 245 /* common/cmd_fat.c */ 246 int do_fat_fsload(cmd_tbl_t *, int, int, char * const []); 247 248 /* common/cmd_ext2.c */ 249 int do_ext2load(cmd_tbl_t *, int, int, char * const []); 250 251 /* common/cmd_nvedit.c */ 252 int env_init (void); 253 void env_relocate (void); 254 int envmatch (uchar *, int); 255 256 /** 257 * env_get() - Look up the value of an environment variable 258 * 259 * In U-Boot proper this can be called before relocation (which is when the 260 * environment is loaded from storage, i.e. GD_FLG_ENV_READY is 0). In that 261 * case this function calls env_get_f(). 262 * 263 * @varname: Variable to look up 264 * @return value of variable, or NULL if not found 265 */ 266 char *env_get(const char *varname); 267 268 /** 269 * env_get_f() - Look up the value of an environment variable (early) 270 * 271 * This function is called from env_get() if the environment has not been 272 * loaded yet (GD_FLG_ENV_READY flag is 0). Some environment locations will 273 * support reading the value (slowly) and some will not. 274 * 275 * @varname: Variable to look up 276 * @return value of variable, or NULL if not found 277 */ 278 int env_get_f(const char *name, char *buf, unsigned len); 279 280 /** 281 * env_get_ulong() - Return an environment variable as an integer value 282 * 283 * Most U-Boot environment variables store hex values. For those which store 284 * (e.g.) base-10 integers, this function can be used to read the value. 285 * 286 * @name: Variable to look up 287 * @base: Base to use (e.g. 10 for base 10, 2 for binary) 288 * @default_val: Default value to return if no value is found 289 * @return the value found, or @default_val if none 290 */ 291 ulong env_get_ulong(const char *name, int base, ulong default_val); 292 293 /** 294 * env_get_hex() - Return an environment variable as a hex value 295 * 296 * Decode an environment as a hex number (it may or may not have a 0x 297 * prefix). If the environment variable cannot be found, or does not start 298 * with hex digits, the default value is returned. 299 * 300 * @varname: Variable to decode 301 * @default_val: Value to return on error 302 */ 303 ulong env_get_hex(const char *varname, ulong default_val); 304 305 /* 306 * Read an environment variable as a boolean 307 * Return -1 if variable does not exist (default to true) 308 */ 309 int env_get_yesno(const char *var); 310 311 /** 312 * env_set() - set an environment variable 313 * 314 * This sets or deletes the value of an environment variable. For setting the 315 * value the variable is created if it does not already exist. 316 * 317 * @varname: Variable to adjust 318 * @value: Value to set for the variable, or NULL or "" to delete the variable 319 * @return 0 if OK, 1 on error 320 */ 321 int env_set(const char *varname, const char *value); 322 323 /** 324 * env_set_ulong() - set an environment variable to an integer 325 * 326 * @varname: Variable to adjust 327 * @value: Value to set for the variable (will be converted to a string) 328 * @return 0 if OK, 1 on error 329 */ 330 int env_set_ulong(const char *varname, ulong value); 331 332 /** 333 * env_set_hex() - set an environment variable to a hex value 334 * 335 * @varname: Variable to adjust 336 * @value: Value to set for the variable (will be converted to a hex string) 337 * @return 0 if OK, 1 on error 338 */ 339 int env_set_hex(const char *varname, ulong value); 340 341 /** 342 * env_set_addr - Set an environment variable to an address in hex 343 * 344 * @varname: Environment variable to set 345 * @addr: Value to set it to 346 * @return 0 if ok, 1 on error 347 */ 348 static inline int env_set_addr(const char *varname, const void *addr) 349 { 350 return env_set_hex(varname, (ulong)addr); 351 } 352 353 #ifdef CONFIG_AUTO_COMPLETE 354 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf); 355 #endif 356 int get_env_id (void); 357 358 void pci_init (void); 359 void pci_init_board(void); 360 361 #if defined(CONFIG_DTB_RESELECT) 362 int embedded_dtb_select(void); 363 #endif 364 365 int misc_init_f (void); 366 int misc_init_r (void); 367 368 /* common/exports.c */ 369 void jumptable_init(void); 370 371 /* common/kallsysm.c */ 372 const char *symbol_lookup(unsigned long addr, unsigned long *caddr); 373 374 /* common/memsize.c */ 375 long get_ram_size (long *, long); 376 phys_size_t get_effective_memsize(void); 377 378 /* $(BOARD)/$(BOARD).c */ 379 void reset_phy (void); 380 void fdc_hw_init (void); 381 382 /* $(BOARD)/eeprom.c */ 383 #ifdef CONFIG_CMD_EEPROM 384 void eeprom_init (int bus); 385 int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt); 386 int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt); 387 #else 388 /* 389 * Some EEPROM code is depecated because it used the legacy I2C interface. Add 390 * some macros here so we don't have to touch every one of those uses 391 */ 392 #define eeprom_init(bus) 393 #define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS) 394 #define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS) 395 #endif 396 397 /* 398 * Set this up regardless of board 399 * type, to prevent errors. 400 */ 401 #if defined(CONFIG_SPI) || !defined(CONFIG_SYS_I2C_EEPROM_ADDR) 402 # define CONFIG_SYS_DEF_EEPROM_ADDR 0 403 #else 404 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C) 405 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR 406 #endif 407 #endif /* CONFIG_SPI || !defined(CONFIG_SYS_I2C_EEPROM_ADDR) */ 408 409 #if defined(CONFIG_SPI) 410 extern void spi_init_f (void); 411 extern void spi_init_r (void); 412 extern ssize_t spi_read (uchar *, int, uchar *, int); 413 extern ssize_t spi_write (uchar *, int, uchar *, int); 414 #endif 415 416 /* $(BOARD)/$(BOARD).c */ 417 int board_early_init_f (void); 418 int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */ 419 int board_late_init (void); 420 int board_postclk_init (void); /* after clocks/timebase, before env/serial */ 421 int board_early_init_r (void); 422 void board_poweroff (void); 423 424 #if defined(CONFIG_SYS_DRAM_TEST) 425 int testdram(void); 426 #endif /* CONFIG_SYS_DRAM_TEST */ 427 428 /* $(CPU)/start.S */ 429 int icache_status (void); 430 void icache_enable (void); 431 void icache_disable(void); 432 int dcache_status (void); 433 void dcache_enable (void); 434 void dcache_disable(void); 435 void mmu_disable(void); 436 #if defined(CONFIG_ARM) 437 void relocate_code(ulong); 438 #else 439 void relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn)); 440 #endif 441 ulong get_endaddr (void); 442 void trap_init (ulong); 443 444 /* $(CPU)/cpu.c */ 445 static inline int cpumask_next(int cpu, unsigned int mask) 446 { 447 for (cpu++; !((1 << cpu) & mask); cpu++) 448 ; 449 450 return cpu; 451 } 452 453 #define for_each_cpu(iter, cpu, num_cpus, mask) \ 454 for (iter = 0, cpu = cpumask_next(-1, mask); \ 455 iter < num_cpus; \ 456 iter++, cpu = cpumask_next(cpu, mask)) \ 457 458 int cpu_numcores (void); 459 int cpu_num_dspcores(void); 460 u32 cpu_mask (void); 461 u32 cpu_dsp_mask(void); 462 int is_core_valid (unsigned int); 463 464 /** 465 * arch_cpu_init() - basic cpu-dependent setup for an architecture 466 * 467 * This is called after early malloc is available. It should handle any 468 * CPU- or SoC- specific init needed to continue the init sequence. See 469 * board_f.c for where it is called. If this is not provided, a default 470 * version (which does nothing) will be used. 471 */ 472 int arch_cpu_init(void); 473 474 void s_init(void); 475 476 int checkcpu (void); 477 int checkicache (void); 478 int checkdcache (void); 479 void upmconfig (unsigned int, unsigned int *, unsigned int); 480 ulong get_tbclk (void); 481 void reset_misc (void); 482 void reset_cpu (ulong addr); 483 void ft_cpu_setup(void *blob, bd_t *bd); 484 void ft_pci_setup(void *blob, bd_t *bd); 485 486 void smp_set_core_boot_addr(unsigned long addr, int corenr); 487 void smp_kick_all_cpus(void); 488 489 /* $(CPU)/serial.c */ 490 int serial_init (void); 491 void serial_setbrg (void); 492 void serial_putc (const char); 493 void serial_putc_raw(const char); 494 void serial_puts (const char *); 495 int serial_getc (void); 496 int serial_tstc (void); 497 498 /* $(CPU)/speed.c */ 499 int get_clocks (void); 500 ulong get_bus_freq (ulong); 501 int get_serial_clock(void); 502 503 int cpu_init_r (void); 504 505 /* $(CPU)/interrupts.c */ 506 int interrupt_init (void); 507 void timer_interrupt (struct pt_regs *); 508 void external_interrupt (struct pt_regs *); 509 void irq_install_handler(int, interrupt_handler_t *, void *); 510 void irq_free_handler (int); 511 void reset_timer (void); 512 513 /* Return value of monotonic microsecond timer */ 514 unsigned long timer_get_us(void); 515 516 void enable_interrupts (void); 517 int disable_interrupts (void); 518 519 /* $(CPU)/.../commproc.c */ 520 int dpram_init (void); 521 uint dpram_base(void); 522 uint dpram_base_align(uint align); 523 uint dpram_alloc(uint size); 524 uint dpram_alloc_align(uint size,uint align); 525 void bootcount_store (ulong); 526 ulong bootcount_load (void); 527 #define BOOTCOUNT_MAGIC 0xB001C041 528 529 /* $(CPU)/.../<eth> */ 530 void mii_init (void); 531 532 /* $(CPU)/.../lcd.c */ 533 ulong lcd_setmem (ulong); 534 535 /* $(CPU)/.../video.c */ 536 ulong video_setmem (ulong); 537 538 /* arch/$(ARCH)/lib/cache.c */ 539 void enable_caches(void); 540 void flush_cache (unsigned long, unsigned long); 541 void flush_dcache_all(void); 542 void flush_dcache_range(unsigned long start, unsigned long stop); 543 void invalidate_dcache_range(unsigned long start, unsigned long stop); 544 void invalidate_dcache_all(void); 545 void invalidate_icache_all(void); 546 547 enum { 548 /* Disable caches (else flush caches but leave them active) */ 549 CBL_DISABLE_CACHES = 1 << 0, 550 CBL_SHOW_BOOTSTAGE_REPORT = 1 << 1, 551 552 CBL_ALL = 3, 553 }; 554 555 /** 556 * Clean up ready for linux 557 * 558 * @param flags Flags to control what is done 559 */ 560 int cleanup_before_linux_select(int flags); 561 562 /* arch/$(ARCH)/lib/ticks.S */ 563 uint64_t get_ticks(void); 564 void wait_ticks (unsigned long); 565 566 /* arch/$(ARCH)/lib/time.c */ 567 ulong usec2ticks (unsigned long usec); 568 ulong ticks2usec (unsigned long ticks); 569 570 /* lib/gunzip.c */ 571 int gzip_parse_header(const unsigned char *src, unsigned long len); 572 int gunzip(void *, int, unsigned char *, unsigned long *); 573 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp, 574 int stoponerr, int offset); 575 576 /** 577 * gzwrite progress indicators: defined weak to allow board-specific 578 * overrides: 579 * 580 * gzwrite_progress_init called on startup 581 * gzwrite_progress called during decompress/write loop 582 * gzwrite_progress_finish called at end of loop to 583 * indicate success (retcode=0) or failure 584 */ 585 void gzwrite_progress_init(u64 expected_size); 586 587 void gzwrite_progress(int iteration, 588 u64 bytes_written, 589 u64 total_bytes); 590 591 void gzwrite_progress_finish(int retcode, 592 u64 totalwritten, 593 u64 totalsize, 594 u32 expected_crc, 595 u32 calculated_crc); 596 597 /** 598 * decompress and write gzipped image from memory to block device 599 * 600 * @param src compressed image address 601 * @param len compressed image length in bytes 602 * @param dev block device descriptor 603 * @param szwritebuf bytes per write (pad to erase size) 604 * @param startoffs offset in bytes of first write 605 * @param szexpected expected uncompressed length 606 * may be zero to use gzip trailer 607 * for files under 4GiB 608 */ 609 int gzwrite(unsigned char *src, int len, 610 struct blk_desc *dev, 611 unsigned long szwritebuf, 612 u64 startoffs, 613 u64 szexpected); 614 615 /* lib/lz4_wrapper.c */ 616 int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn); 617 618 /* lib/qsort.c */ 619 void qsort(void *base, size_t nmemb, size_t size, 620 int(*compar)(const void *, const void *)); 621 int strcmp_compar(const void *, const void *); 622 623 /* lib/uuid.c */ 624 #include <uuid.h> 625 626 /* lib/vsprintf.c */ 627 #include <vsprintf.h> 628 629 /* lib/strmhz.c */ 630 char * strmhz(char *buf, unsigned long hz); 631 632 /* lib/crc32.c */ 633 #include <u-boot/crc.h> 634 635 /* lib/rand.c */ 636 #define RAND_MAX -1U 637 void srand(unsigned int seed); 638 unsigned int rand(void); 639 unsigned int rand_r(unsigned int *seedp); 640 641 /* 642 * STDIO based functions (can always be used) 643 */ 644 /* serial stuff */ 645 int serial_printf (const char *fmt, ...) 646 __attribute__ ((format (__printf__, 1, 2))); 647 648 /* lib/gzip.c */ 649 int gzip(void *dst, unsigned long *lenp, 650 unsigned char *src, unsigned long srclen); 651 int zzip(void *dst, unsigned long *lenp, unsigned char *src, 652 unsigned long srclen, int stoponerr, 653 int (*func)(unsigned long, unsigned long)); 654 655 /* lib/net_utils.c */ 656 #include <net.h> 657 static inline struct in_addr env_get_ip(char *var) 658 { 659 return string_to_ip(env_get(var)); 660 } 661 662 int pcmcia_init (void); 663 664 #ifdef CONFIG_LED_STATUS 665 # include <status_led.h> 666 #endif 667 668 #include <bootstage.h> 669 670 #ifdef CONFIG_SHOW_ACTIVITY 671 void show_activity(int arg); 672 #endif 673 674 /* Multicore arch functions */ 675 #ifdef CONFIG_MP 676 int cpu_status(int nr); 677 int cpu_reset(int nr); 678 int cpu_disable(int nr); 679 int cpu_release(int nr, int argc, char * const argv[]); 680 #endif 681 682 #else /* __ASSEMBLY__ */ 683 684 /* Drop a C type modifier (like in 3UL) for constants used in assembly. */ 685 #define _AC(X, Y) X 686 687 #endif /* __ASSEMBLY__ */ 688 689 /* Put only stuff here that the assembler can digest */ 690 691 /* Declare an unsigned long constant digestable both by C and an assembler. */ 692 #define UL(x) _AC(x, UL) 693 694 #ifdef CONFIG_POST 695 #define CONFIG_HAS_POST 696 #ifndef CONFIG_POST_ALT_LIST 697 #define CONFIG_POST_STD_LIST 698 #endif 699 #endif 700 701 #ifdef CONFIG_INIT_CRITICAL 702 #error CONFIG_INIT_CRITICAL is deprecated! 703 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README. 704 #endif 705 706 #define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1)) 707 708 /* 709 * check_member() - Check the offset of a structure member 710 * 711 * @structure: Name of structure (e.g. global_data) 712 * @member: Name of member (e.g. baudrate) 713 * @offset: Expected offset in bytes 714 */ 715 #define check_member(structure, member, offset) _Static_assert( \ 716 offsetof(struct structure, member) == offset, \ 717 "`struct " #structure "` offset for `" #member "` is not " #offset) 718 719 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */ 720 #ifdef CONFIG_EFI_STUB 721 #define ll_boot_init() false 722 #else 723 #define ll_boot_init() true 724 #endif 725 726 /* Pull in stuff for the build system */ 727 #ifdef DO_DEPS_ONLY 728 # include <environment.h> 729 #endif 730 731 #endif /* __COMMON_H_ */ 732