xref: /openbmc/u-boot/include/common.h (revision 2ecba112)
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/delay.h>
27 #include <linux/types.h>
28 #include <linux/string.h>
29 #include <linux/stringify.h>
30 #include <asm/ptrace.h>
31 #include <stdarg.h>
32 #include <linux/kernel.h>
33 
34 #include <part.h>
35 #include <flash.h>
36 #include <image.h>
37 
38 /* Bring in printf format macros if inttypes.h is included */
39 #define __STDC_FORMAT_MACROS
40 
41 #ifdef __LP64__
42 #define CONFIG_SYS_SUPPORT_64BIT_DATA
43 #endif
44 
45 #ifdef DEBUG
46 #define _DEBUG	1
47 #else
48 #define _DEBUG	0
49 #endif
50 
51 #ifdef CONFIG_SPL_BUILD
52 #define _SPL_BUILD	1
53 #else
54 #define _SPL_BUILD	0
55 #endif
56 
57 /* Define this at the top of a file to add a prefix to debug messages */
58 #ifndef pr_fmt
59 #define pr_fmt(fmt) fmt
60 #endif
61 
62 /*
63  * Output a debug text when condition "cond" is met. The "cond" should be
64  * computed by a preprocessor in the best case, allowing for the best
65  * optimization.
66  */
67 #define debug_cond(cond, fmt, args...)			\
68 	do {						\
69 		if (cond)				\
70 			printf(pr_fmt(fmt), ##args);	\
71 	} while (0)
72 
73 /* Show a message if DEBUG is defined in a file */
74 #define debug(fmt, args...)			\
75 	debug_cond(_DEBUG, fmt, ##args)
76 
77 /* Show a message if not in SPL */
78 #define warn_non_spl(fmt, args...)			\
79 	debug_cond(!_SPL_BUILD, fmt, ##args)
80 
81 /*
82  * An assertion is run-time check done in debug mode only. If DEBUG is not
83  * defined then it is skipped. If DEBUG is defined and the assertion fails,
84  * then it calls panic*( which may or may not reset/halt U-Boot (see
85  * CONFIG_PANIC_HANG), It is hoped that all failing assertions are found
86  * before release, and after release it is hoped that they don't matter. But
87  * in any case these failing assertions cannot be fixed with a reset (which
88  * may just do the same assertion again).
89  */
90 void __assert_fail(const char *assertion, const char *file, unsigned line,
91 		   const char *function);
92 #define assert(x) \
93 	({ if (!(x) && _DEBUG) \
94 		__assert_fail(#x, __FILE__, __LINE__, __func__); })
95 
96 #define error(fmt, args...) do {					\
97 		printf("ERROR: " pr_fmt(fmt) "\nat %s:%d/%s()\n",	\
98 			##args, __FILE__, __LINE__, __func__);		\
99 } while (0)
100 
101 #ifndef BUG
102 #define BUG() do { \
103 	printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
104 	panic("BUG!"); \
105 } while (0)
106 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
107 #endif /* BUG */
108 
109 typedef void (interrupt_handler_t)(void *);
110 
111 #include <asm/u-boot.h> /* boot information for Linux kernel */
112 #include <asm/global_data.h>	/* global data used for startup functions */
113 
114 #if defined(CONFIG_ENV_IS_EMBEDDED)
115 #define TOTAL_MALLOC_LEN	CONFIG_SYS_MALLOC_LEN
116 #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
117 	(CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
118       defined(CONFIG_ENV_IS_IN_NVRAM)
119 #define	TOTAL_MALLOC_LEN	(CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
120 #else
121 #define	TOTAL_MALLOC_LEN	CONFIG_SYS_MALLOC_LEN
122 #endif
123 
124 /*
125  * Function Prototypes
126  */
127 int dram_init(void);
128 
129 /**
130  * dram_init_banksize() - Set up DRAM bank sizes
131  *
132  * This can be implemented by boards to set up the DRAM bank information in
133  * gd->bd->bi_dram(). It is called just before relocation, after dram_init()
134  * is called.
135  *
136  * If this is not provided, a default implementation will try to set up a
137  * single bank. It will do this if CONFIG_NR_DRAM_BANKS and
138  * CONFIG_SYS_SDRAM_BASE are set. The bank will have a start address of
139  * CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to
140  * get_effective_memsize().
141  *
142  * @return 0 if OK, -ve on error
143  */
144 int dram_init_banksize(void);
145 
146 void	hang		(void) __attribute__ ((noreturn));
147 
148 int	timer_init(void);
149 int	cpu_init(void);
150 
151 #include <display_options.h>
152 
153 /* common/main.c */
154 void	main_loop	(void);
155 int run_command(const char *cmd, int flag);
156 int run_command_repeatable(const char *cmd, int flag);
157 
158 /**
159  * Run a list of commands separated by ; or even \0
160  *
161  * Note that if 'len' is not -1, then the command does not need to be nul
162  * terminated, Memory will be allocated for the command in that case.
163  *
164  * @param cmd	List of commands to run, each separated bu semicolon
165  * @param len	Length of commands excluding terminator if known (-1 if not)
166  * @param flag	Execution flags (CMD_FLAG_...)
167  * @return 0 on success, or != 0 on error.
168  */
169 int run_command_list(const char *cmd, int len, int flag);
170 
171 /* arch/$(ARCH)/lib/board.c */
172 void board_init_f(ulong);
173 void board_init_r(gd_t *, ulong) __attribute__ ((noreturn));
174 
175 /**
176  * ulong board_init_f_alloc_reserve - allocate reserved area
177  *
178  * This function is called by each architecture very early in the start-up
179  * code to allow the C runtime to reserve space on the stack for writable
180  * 'globals' such as GD and the malloc arena.
181  *
182  * @top:	top of the reserve area, growing down.
183  * @return:	bottom of reserved area
184  */
185 ulong board_init_f_alloc_reserve(ulong top);
186 
187 /**
188  * board_init_f_init_reserve - initialize the reserved area(s)
189  *
190  * This function is called once the C runtime has allocated the reserved
191  * area on the stack. It must initialize the GD at the base of that area.
192  *
193  * @base:	top from which reservation was done
194  */
195 void board_init_f_init_reserve(ulong base);
196 
197 /**
198  * arch_setup_gd() - Set up the global_data pointer
199  *
200  * This pointer is special in some architectures and cannot easily be assigned
201  * to. For example on x86 it is implemented by adding a specific record to its
202  * Global Descriptor Table! So we we provide a function to carry out this task.
203  * For most architectures this can simply be:
204  *
205  *    gd = gd_ptr;
206  *
207  * @gd_ptr:	Pointer to global data
208  */
209 void arch_setup_gd(gd_t *gd_ptr);
210 
211 int checkboard(void);
212 int show_board_info(void);
213 int checkflash(void);
214 int checkdram(void);
215 int last_stage_init(void);
216 extern ulong monitor_flash_len;
217 int mac_read_from_eeprom(void);
218 extern u8 __dtb_dt_begin[];	/* embedded device tree blob */
219 int set_cpu_clk_info(void);
220 int mdm_init(void);
221 int print_cpuinfo(void);
222 int update_flash_size(int flash_size);
223 int arch_early_init_r(void);
224 
225 /*
226  * setup_board_extra() - Fill in extra details in the bd_t structure
227  *
228  * @return 0 if OK, -ve on error
229  */
230 int setup_board_extra(void);
231 
232 /**
233  * arch_fsp_init() - perform firmware support package init
234  *
235  * Where U-Boot relies on binary blobs to handle part of the system init, this
236  * function can be used to set up the blobs. This is used on some Intel
237  * platforms.
238  */
239 int arch_fsp_init(void);
240 
241 /**
242  * arch_cpu_init_dm() - init CPU after driver model is available
243  *
244  * This is called immediately after driver model is available before
245  * relocation. This is similar to arch_cpu_init() but is able to reference
246  * devices
247  *
248  * @return 0 if OK, -ve on error
249  */
250 int arch_cpu_init_dm(void);
251 
252 /**
253  * Reserve all necessary stacks
254  *
255  * This is used in generic board init sequence in common/board_f.c. Each
256  * architecture could provide this function to tailor the required stacks.
257  *
258  * On entry gd->start_addr_sp is pointing to the suggested top of the stack.
259  * The callee ensures gd->start_add_sp is 16-byte aligned, so architectures
260  * require only this can leave it untouched.
261  *
262  * On exit gd->start_addr_sp and gd->irq_sp should be set to the respective
263  * positions of the stack. The stack pointer(s) will be set to this later.
264  * gd->irq_sp is only required, if the architecture needs it.
265  *
266  * @return 0 if no error
267  */
268 __weak int arch_reserve_stacks(void);
269 
270 /**
271  * Show the DRAM size in a board-specific way
272  *
273  * This is used by boards to display DRAM information in their own way.
274  *
275  * @param size	Size of DRAM (which should be displayed along with other info)
276  */
277 void board_show_dram(phys_size_t size);
278 
279 /**
280  * arch_fixup_fdt() - Write arch-specific information to fdt
281  *
282  * Defined in arch/$(ARCH)/lib/bootm-fdt.c
283  *
284  * @blob:	FDT blob to write to
285  * @return 0 if ok, or -ve FDT_ERR_... on failure
286  */
287 int arch_fixup_fdt(void *blob);
288 
289 /* common/flash.c */
290 void flash_perror (int);
291 
292 /* common/cmd_source.c */
293 int	source (ulong addr, const char *fit_uname);
294 
295 extern ulong load_addr;		/* Default Load Address */
296 extern ulong save_addr;		/* Default Save Address */
297 extern ulong save_size;		/* Default Save Size */
298 
299 /* common/cmd_net.c */
300 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
301 
302 /* common/cmd_fat.c */
303 int do_fat_fsload(cmd_tbl_t *, int, int, char * const []);
304 
305 /* common/cmd_ext2.c */
306 int do_ext2load(cmd_tbl_t *, int, int, char * const []);
307 
308 /* common/cmd_nvedit.c */
309 int	env_init     (void);
310 void	env_relocate (void);
311 int	envmatch     (uchar *, int);
312 
313 /* Avoid unfortunate conflict with libc's getenv() */
314 #ifdef CONFIG_SANDBOX
315 #define getenv uboot_getenv
316 #endif
317 char	*getenv	     (const char *);
318 int	getenv_f     (const char *name, char *buf, unsigned len);
319 ulong getenv_ulong(const char *name, int base, ulong default_val);
320 
321 /**
322  * getenv_hex() - Return an environment variable as a hex value
323  *
324  * Decode an environment as a hex number (it may or may not have a 0x
325  * prefix). If the environment variable cannot be found, or does not start
326  * with hex digits, the default value is returned.
327  *
328  * @varname:		Variable to decode
329  * @default_val:	Value to return on error
330  */
331 ulong getenv_hex(const char *varname, ulong default_val);
332 
333 /*
334  * Read an environment variable as a boolean
335  * Return -1 if variable does not exist (default to true)
336  */
337 int getenv_yesno(const char *var);
338 int	saveenv	     (void);
339 int	setenv	     (const char *, const char *);
340 int setenv_ulong(const char *varname, ulong value);
341 int setenv_hex(const char *varname, ulong value);
342 /**
343  * setenv_addr - Set an environment variable to an address in hex
344  *
345  * @varname:	Environment variable to set
346  * @addr:	Value to set it to
347  * @return 0 if ok, 1 on error
348  */
349 static inline int setenv_addr(const char *varname, const void *addr)
350 {
351 	return setenv_hex(varname, (ulong)addr);
352 }
353 
354 #ifdef CONFIG_AUTO_COMPLETE
355 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
356 #endif
357 int get_env_id (void);
358 
359 void	pci_init      (void);
360 void	pci_init_board(void);
361 
362 #if defined(CONFIG_DTB_RESELECT)
363 int	embedded_dtb_select(void);
364 #endif
365 
366 int	misc_init_f   (void);
367 int	misc_init_r   (void);
368 
369 /* common/exports.c */
370 void	jumptable_init(void);
371 
372 /* common/kallsysm.c */
373 const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
374 
375 /* common/memsize.c */
376 long	get_ram_size  (long *, long);
377 phys_size_t get_effective_memsize(void);
378 
379 /* $(BOARD)/$(BOARD).c */
380 void	reset_phy     (void);
381 void	fdc_hw_init   (void);
382 
383 /* $(BOARD)/eeprom.c */
384 #ifdef CONFIG_CMD_EEPROM
385 void eeprom_init  (int bus);
386 int  eeprom_read  (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
387 int  eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
388 #else
389 /*
390  * Some EEPROM code is depecated because it used the legacy I2C interface. Add
391  * some macros here so we don't have to touch every one of those uses
392  */
393 #define eeprom_init(bus)
394 #define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
395 #define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
396 #endif
397 
398 /*
399  * Set this up regardless of board
400  * type, to prevent errors.
401  */
402 #if defined(CONFIG_SPI) || !defined(CONFIG_SYS_I2C_EEPROM_ADDR)
403 # define CONFIG_SYS_DEF_EEPROM_ADDR 0
404 #else
405 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
406 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR
407 #endif
408 #endif /* CONFIG_SPI || !defined(CONFIG_SYS_I2C_EEPROM_ADDR) */
409 
410 #if defined(CONFIG_SPI)
411 extern void spi_init_f (void);
412 extern void spi_init_r (void);
413 extern ssize_t spi_read	 (uchar *, int, uchar *, int);
414 extern ssize_t spi_write (uchar *, int, uchar *, int);
415 #endif
416 
417 /* $(BOARD)/$(BOARD).c */
418 int board_early_init_f (void);
419 int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */
420 int board_late_init (void);
421 int board_postclk_init (void); /* after clocks/timebase, before env/serial */
422 int board_early_init_r (void);
423 void board_poweroff (void);
424 
425 #if defined(CONFIG_SYS_DRAM_TEST)
426 int testdram(void);
427 #endif /* CONFIG_SYS_DRAM_TEST */
428 
429 /* $(CPU)/start.S */
430 int	icache_status (void);
431 void	icache_enable (void);
432 void	icache_disable(void);
433 int	dcache_status (void);
434 void	dcache_enable (void);
435 void	dcache_disable(void);
436 void	mmu_disable(void);
437 #if defined(CONFIG_ARM)
438 void	relocate_code(ulong);
439 #else
440 void	relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn));
441 #endif
442 ulong	get_endaddr   (void);
443 void	trap_init     (ulong);
444 
445 /* $(CPU)/cpu.c */
446 static inline int cpumask_next(int cpu, unsigned int mask)
447 {
448 	for (cpu++; !((1 << cpu) & mask); cpu++)
449 		;
450 
451 	return cpu;
452 }
453 
454 #define for_each_cpu(iter, cpu, num_cpus, mask) \
455 	for (iter = 0, cpu = cpumask_next(-1, mask); \
456 		iter < num_cpus; \
457 		iter++, cpu = cpumask_next(cpu, mask)) \
458 
459 int	cpu_numcores  (void);
460 int	cpu_num_dspcores(void);
461 u32	cpu_mask      (void);
462 u32	cpu_dsp_mask(void);
463 int	is_core_valid (unsigned int);
464 
465 /**
466  * arch_cpu_init() - basic cpu-dependent setup for an architecture
467  *
468  * This is called after early malloc is available. It should handle any
469  * CPU- or SoC- specific init needed to continue the init sequence. See
470  * board_f.c for where it is called. If this is not provided, a default
471  * version (which does nothing) will be used.
472  */
473 int arch_cpu_init(void);
474 
475 int	checkcpu      (void);
476 int	checkicache   (void);
477 int	checkdcache   (void);
478 void	upmconfig     (unsigned int, unsigned int *, unsigned int);
479 ulong	get_tbclk     (void);
480 void	reset_misc    (void);
481 void	reset_cpu     (ulong addr);
482 void ft_cpu_setup(void *blob, bd_t *bd);
483 void ft_pci_setup(void *blob, bd_t *bd);
484 
485 void smp_set_core_boot_addr(unsigned long addr, int corenr);
486 void smp_kick_all_cpus(void);
487 
488 /* $(CPU)/serial.c */
489 int	serial_init   (void);
490 void	serial_setbrg (void);
491 void	serial_putc   (const char);
492 void	serial_putc_raw(const char);
493 void	serial_puts   (const char *);
494 int	serial_getc   (void);
495 int	serial_tstc   (void);
496 
497 /* $(CPU)/speed.c */
498 int	get_clocks (void);
499 ulong	get_bus_freq  (ulong);
500 int get_serial_clock(void);
501 
502 int	cpu_init_r    (void);
503 
504 /* $(CPU)/interrupts.c */
505 int	interrupt_init	   (void);
506 void	timer_interrupt	   (struct pt_regs *);
507 void	external_interrupt (struct pt_regs *);
508 void	irq_install_handler(int, interrupt_handler_t *, void *);
509 void	irq_free_handler   (int);
510 void	reset_timer	   (void);
511 
512 /* Return value of monotonic microsecond timer */
513 unsigned long timer_get_us(void);
514 
515 void	enable_interrupts  (void);
516 int	disable_interrupts (void);
517 
518 /* $(CPU)/.../commproc.c */
519 int	dpram_init (void);
520 uint	dpram_base(void);
521 uint	dpram_base_align(uint align);
522 uint	dpram_alloc(uint size);
523 uint	dpram_alloc_align(uint size,uint align);
524 void	bootcount_store (ulong);
525 ulong	bootcount_load (void);
526 #define BOOTCOUNT_MAGIC		0xB001C041
527 
528 /* $(CPU)/.../<eth> */
529 void mii_init (void);
530 
531 /* $(CPU)/.../lcd.c */
532 ulong	lcd_setmem (ulong);
533 
534 /* $(CPU)/.../video.c */
535 ulong	video_setmem (ulong);
536 
537 /* arch/$(ARCH)/lib/cache.c */
538 void	enable_caches(void);
539 void	flush_cache   (unsigned long, unsigned long);
540 void	flush_dcache_all(void);
541 void	flush_dcache_range(unsigned long start, unsigned long stop);
542 void	invalidate_dcache_range(unsigned long start, unsigned long stop);
543 void	invalidate_dcache_all(void);
544 void	invalidate_icache_all(void);
545 
546 enum {
547 	/* Disable caches (else flush caches but leave them active) */
548 	CBL_DISABLE_CACHES		= 1 << 0,
549 	CBL_SHOW_BOOTSTAGE_REPORT	= 1 << 1,
550 
551 	CBL_ALL				= 3,
552 };
553 
554 /**
555  * Clean up ready for linux
556  *
557  * @param flags		Flags to control what is done
558  */
559 int cleanup_before_linux_select(int flags);
560 
561 /* arch/$(ARCH)/lib/ticks.S */
562 uint64_t get_ticks(void);
563 void	wait_ticks    (unsigned long);
564 
565 /* arch/$(ARCH)/lib/time.c */
566 ulong	usec2ticks    (unsigned long usec);
567 ulong	ticks2usec    (unsigned long ticks);
568 
569 /* lib/gunzip.c */
570 int gunzip(void *, int, unsigned char *, unsigned long *);
571 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
572 						int stoponerr, int offset);
573 
574 /**
575  * gzwrite progress indicators: defined weak to allow board-specific
576  * overrides:
577  *
578  *	gzwrite_progress_init called on startup
579  *	gzwrite_progress called during decompress/write loop
580  *	gzwrite_progress_finish called at end of loop to
581  *		indicate success (retcode=0) or failure
582  */
583 void gzwrite_progress_init(u64 expected_size);
584 
585 void gzwrite_progress(int iteration,
586 		     u64 bytes_written,
587 		     u64 total_bytes);
588 
589 void gzwrite_progress_finish(int retcode,
590 			     u64 totalwritten,
591 			     u64 totalsize,
592 			     u32 expected_crc,
593 			     u32 calculated_crc);
594 
595 /**
596  * decompress and write gzipped image from memory to block device
597  *
598  * @param	src		compressed image address
599  * @param	len		compressed image length in bytes
600  * @param	dev		block device descriptor
601  * @param	szwritebuf	bytes per write (pad to erase size)
602  * @param	startoffs	offset in bytes of first write
603  * @param	szexpected	expected uncompressed length
604  *				may be zero to use gzip trailer
605  *				for files under 4GiB
606  */
607 int gzwrite(unsigned char *src, int len,
608 	    struct blk_desc *dev,
609 	    unsigned long szwritebuf,
610 	    u64 startoffs,
611 	    u64 szexpected);
612 
613 /* lib/lz4_wrapper.c */
614 int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn);
615 
616 /* lib/qsort.c */
617 void qsort(void *base, size_t nmemb, size_t size,
618 	   int(*compar)(const void *, const void *));
619 int strcmp_compar(const void *, const void *);
620 
621 /* lib/uuid.c */
622 #include <uuid.h>
623 
624 /* lib/vsprintf.c */
625 #include <vsprintf.h>
626 
627 /* lib/strmhz.c */
628 char *	strmhz(char *buf, unsigned long hz);
629 
630 /* lib/crc32.c */
631 #include <u-boot/crc.h>
632 
633 /* lib/rand.c */
634 #define RAND_MAX -1U
635 void srand(unsigned int seed);
636 unsigned int rand(void);
637 unsigned int rand_r(unsigned int *seedp);
638 
639 /*
640  * STDIO based functions (can always be used)
641  */
642 /* serial stuff */
643 int	serial_printf (const char *fmt, ...)
644 		__attribute__ ((format (__printf__, 1, 2)));
645 /* stdin */
646 int	getc(void);
647 int	tstc(void);
648 
649 /* stdout */
650 #if !defined(CONFIG_SPL_BUILD) || \
651 	(defined(CONFIG_TPL_BUILD) && defined(CONFIG_TPL_SERIAL_SUPPORT)) || \
652 	(defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) && \
653 		defined(CONFIG_SPL_SERIAL_SUPPORT))
654 void	putc(const char c);
655 void	puts(const char *s);
656 int	printf(const char *fmt, ...)
657 		__attribute__ ((format (__printf__, 1, 2)));
658 int	vprintf(const char *fmt, va_list args);
659 #else
660 #define	putc(...) do { } while (0)
661 #define puts(...) do { } while (0)
662 #define printf(...) do { } while (0)
663 #define vprintf(...) do { } while (0)
664 #endif
665 
666 /* stderr */
667 #define eputc(c)		fputc(stderr, c)
668 #define eputs(s)		fputs(stderr, s)
669 #define eprintf(fmt,args...)	fprintf(stderr,fmt ,##args)
670 
671 /*
672  * FILE based functions (can only be used AFTER relocation!)
673  */
674 #define stdin		0
675 #define stdout		1
676 #define stderr		2
677 #define MAX_FILES	3
678 
679 int	fprintf(int file, const char *fmt, ...)
680 		__attribute__ ((format (__printf__, 2, 3)));
681 void	fputs(int file, const char *s);
682 void	fputc(int file, const char c);
683 int	ftstc(int file);
684 int	fgetc(int file);
685 
686 /* lib/gzip.c */
687 int gzip(void *dst, unsigned long *lenp,
688 		unsigned char *src, unsigned long srclen);
689 int zzip(void *dst, unsigned long *lenp, unsigned char *src,
690 		unsigned long srclen, int stoponerr,
691 		int (*func)(unsigned long, unsigned long));
692 
693 /* lib/net_utils.c */
694 #include <net.h>
695 static inline struct in_addr getenv_ip(char *var)
696 {
697 	return string_to_ip(getenv(var));
698 }
699 
700 int	pcmcia_init (void);
701 
702 #ifdef CONFIG_LED_STATUS
703 # include <status_led.h>
704 #endif
705 
706 #include <bootstage.h>
707 
708 #ifdef CONFIG_SHOW_ACTIVITY
709 void show_activity(int arg);
710 #endif
711 
712 /* Multicore arch functions */
713 #ifdef CONFIG_MP
714 int cpu_status(int nr);
715 int cpu_reset(int nr);
716 int cpu_disable(int nr);
717 int cpu_release(int nr, int argc, char * const argv[]);
718 #endif
719 
720 #else	/* __ASSEMBLY__ */
721 
722 /* Drop a C type modifier (like in 3UL) for constants used in assembly. */
723 #define _AC(X, Y)       X
724 
725 #endif	/* __ASSEMBLY__ */
726 
727 /* Put only stuff here that the assembler can digest */
728 
729 /* Declare an unsigned long constant digestable both by C and an assembler. */
730 #define UL(x)           _AC(x, UL)
731 
732 #ifdef CONFIG_POST
733 #define CONFIG_HAS_POST
734 #ifndef CONFIG_POST_ALT_LIST
735 #define CONFIG_POST_STD_LIST
736 #endif
737 #endif
738 
739 #ifdef CONFIG_INIT_CRITICAL
740 #error CONFIG_INIT_CRITICAL is deprecated!
741 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README.
742 #endif
743 
744 #define ROUND(a,b)		(((a) + (b) - 1) & ~((b) - 1))
745 
746 /*
747  * check_member() - Check the offset of a structure member
748  *
749  * @structure:	Name of structure (e.g. global_data)
750  * @member:	Name of member (e.g. baudrate)
751  * @offset:	Expected offset in bytes
752  */
753 #define check_member(structure, member, offset) _Static_assert( \
754 	offsetof(struct structure, member) == offset, \
755 	"`struct " #structure "` offset for `" #member "` is not " #offset)
756 
757 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */
758 #ifdef CONFIG_EFI_STUB
759 #define ll_boot_init()	false
760 #else
761 #define ll_boot_init()	true
762 #endif
763 
764 /* Pull in stuff for the build system */
765 #ifdef DO_DEPS_ONLY
766 # include <environment.h>
767 #endif
768 
769 #endif	/* __COMMON_H_ */
770