xref: /rk3399_rockchip-uboot/include/common.h (revision 14569d26731af93622d8fcf87429b06ece85047b)
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 #include <stacktrace.h>
41 
42 /* Bring in printf format macros if inttypes.h is included */
43 #define __STDC_FORMAT_MACROS
44 
45 #ifdef __LP64__
46 #define CONFIG_SYS_SUPPORT_64BIT_DATA
47 #endif
48 
49 #include <log.h>
50 
51 #if (__STDC_VERSION__ >= 201112L) || defined(__cplusplus)
52 # undef static_assert
53 # define static_assert _Static_assert
54 #endif
55 
56 #ifndef CONFIG_IRQ
57 typedef void (interrupt_handler_t)(void *);
58 #else
59 typedef void (interrupt_handler_t)(int, void *);
60 #endif
61 
62 #include <asm/u-boot.h> /* boot information for Linux kernel */
63 #include <asm/global_data.h>	/* global data used for startup functions */
64 
65 #if defined(CONFIG_ENV_IS_EMBEDDED)
66 #define TOTAL_MALLOC_LEN	CONFIG_SYS_MALLOC_LEN
67 #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
68 	(CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
69       defined(CONFIG_ENV_IS_IN_NVRAM)
70 #define	TOTAL_MALLOC_LEN	(CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
71 #else
72 #define	TOTAL_MALLOC_LEN	CONFIG_SYS_MALLOC_LEN
73 #endif
74 
75 /*
76  * Function Prototypes
77  */
78 int dram_init(void);
79 
80 /**
81  * dram_init_banksize() - Set up DRAM bank sizes
82  *
83  * This can be implemented by boards to set up the DRAM bank information in
84  * gd->bd->bi_dram(). It is called just before relocation, after dram_init()
85  * is called.
86  *
87  * If this is not provided, a default implementation will try to set up a
88  * single bank. It will do this if CONFIG_NR_DRAM_BANKS and
89  * CONFIG_SYS_SDRAM_BASE are set. The bank will have a start address of
90  * CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to
91  * get_effective_memsize().
92  *
93  * @return 0 if OK, -ve on error
94  */
95 int dram_init_banksize(void);
96 
97 void	hang		(void) __attribute__ ((noreturn));
98 
99 int	timer_init(void);
100 int	cpu_init(void);
101 
102 #include <display_options.h>
103 
104 /* common/main.c */
105 void	main_loop	(void);
106 int run_command(const char *cmd, int flag);
107 int run_command_repeatable(const char *cmd, int flag);
108 
109 /**
110  * Run a list of commands separated by ; or even \0
111  *
112  * Note that if 'len' is not -1, then the command does not need to be nul
113  * terminated, Memory will be allocated for the command in that case.
114  *
115  * @param cmd	List of commands to run, each separated bu semicolon
116  * @param len	Length of commands excluding terminator if known (-1 if not)
117  * @param flag	Execution flags (CMD_FLAG_...)
118  * @return 0 on success, or != 0 on error.
119  */
120 int run_command_list(const char *cmd, int len, int flag);
121 
122 /* arch/$(ARCH)/lib/board.c */
123 void board_init_f(ulong);
124 void board_init_r(gd_t *, ulong) __attribute__ ((noreturn));
125 
126 /**
127  * ulong board_init_f_alloc_reserve - allocate reserved area
128  *
129  * This function is called by each architecture very early in the start-up
130  * code to allow the C runtime to reserve space on the stack for writable
131  * 'globals' such as GD and the malloc arena.
132  *
133  * @top:	top of the reserve area, growing down.
134  * @return:	bottom of reserved area
135  */
136 ulong board_init_f_alloc_reserve(ulong top);
137 
138 /**
139  * board_init_f_init_reserve - initialize the reserved area(s)
140  *
141  * This function is called once the C runtime has allocated the reserved
142  * area on the stack. It must initialize the GD at the base of that area.
143  *
144  * @base:	top from which reservation was done
145  */
146 void board_init_f_init_reserve(ulong base);
147 
148 /*
149  * Board-specific Platform code can init serial earlier if needed
150  */
151 __weak int board_init_f_init_serial(void);
152 
153 /**
154  * arch_setup_gd() - Set up the global_data pointer
155  *
156  * This pointer is special in some architectures and cannot easily be assigned
157  * to. For example on x86 it is implemented by adding a specific record to its
158  * Global Descriptor Table! So we we provide a function to carry out this task.
159  * For most architectures this can simply be:
160  *
161  *    gd = gd_ptr;
162  *
163  * @gd_ptr:	Pointer to global data
164  */
165 void arch_setup_gd(gd_t *gd_ptr);
166 
167 int checkboard(void);
168 int show_board_info(void);
169 int checkflash(void);
170 int checkdram(void);
171 int last_stage_init(void);
172 extern ulong monitor_flash_len;
173 int mac_read_from_eeprom(void);
174 extern u8 __dtb_dt_begin[];	/* embedded device tree blob */
175 extern u8 __dtb_dt_spl_begin[];	/* embedded device tree blob for SPL/TPL */
176 int set_cpu_clk_info(void);
177 int mdm_init(void);
178 int print_cpuinfo(void);
179 int update_flash_size(int flash_size);
180 int arch_early_init_r(void);
181 
182 /*
183  * setup_board_extra() - Fill in extra details in the bd_t structure
184  *
185  * @return 0 if OK, -ve on error
186  */
187 int setup_board_extra(void);
188 
189 /**
190  * arch_fsp_init() - perform firmware support package init
191  *
192  * Where U-Boot relies on binary blobs to handle part of the system init, this
193  * function can be used to set up the blobs. This is used on some Intel
194  * platforms.
195  */
196 int arch_fsp_init(void);
197 
198 /**
199  * arch_cpu_init_dm() - init CPU after driver model is available
200  *
201  * This is called immediately after driver model is available before
202  * relocation. This is similar to arch_cpu_init() but is able to reference
203  * devices
204  *
205  * @return 0 if OK, -ve on error
206  */
207 int arch_cpu_init_dm(void);
208 
209 /**
210  * Reserve all necessary stacks
211  *
212  * This is used in generic board init sequence in common/board_f.c. Each
213  * architecture could provide this function to tailor the required stacks.
214  *
215  * On entry gd->start_addr_sp is pointing to the suggested top of the stack.
216  * The callee ensures gd->start_add_sp is 16-byte aligned, so architectures
217  * require only this can leave it untouched.
218  *
219  * On exit gd->start_addr_sp and gd->irq_sp should be set to the respective
220  * positions of the stack. The stack pointer(s) will be set to this later.
221  * gd->irq_sp is only required, if the architecture needs it.
222  *
223  * @return 0 if no error
224  */
225 __weak int arch_reserve_stacks(void);
226 
227 /**
228  * Show the DRAM size in a board-specific way
229  *
230  * This is used by boards to display DRAM information in their own way.
231  *
232  * @param size	Size of DRAM (which should be displayed along with other info)
233  */
234 void board_show_dram(phys_size_t size);
235 
236 /**
237  * arch_fixup_fdt() - Write arch-specific information to fdt
238  *
239  * Defined in arch/$(ARCH)/lib/bootm-fdt.c
240  *
241  * @blob:	FDT blob to write to
242  * @return 0 if ok, or -ve FDT_ERR_... on failure
243  */
244 int arch_fixup_fdt(void *blob);
245 
246 int reserve_mmu(void);
247 /* common/flash.c */
248 void flash_perror (int);
249 
250 /* common/cmd_source.c */
251 int	source (ulong addr, const char *fit_uname);
252 
253 extern ulong load_addr;		/* Default Load Address */
254 extern ulong save_addr;		/* Default Save Address */
255 extern ulong save_size;		/* Default Save Size */
256 
257 /* common/cmd_net.c */
258 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
259 
260 /* common/cmd_fat.c */
261 int do_fat_fsload(cmd_tbl_t *, int, int, char * const []);
262 
263 /* common/cmd_ext2.c */
264 int do_ext2load(cmd_tbl_t *, int, int, char * const []);
265 
266 /* common/cmd_nvedit.c */
267 int	env_init     (void);
268 void	env_relocate (void);
269 int	envmatch     (uchar *, int);
270 
271 /**
272  * env_get() - Look up the value of an environment variable
273  *
274  * In U-Boot proper this can be called before relocation (which is when the
275  * environment is loaded from storage, i.e. GD_FLG_ENV_READY is 0). In that
276  * case this function calls env_get_f().
277  *
278  * @varname:	Variable to look up
279  * @return value of variable, or NULL if not found
280  */
281 char *env_get(const char *varname);
282 
283 /**
284  * env_get_f() - Look up the value of an environment variable (early)
285  *
286  * This function is called from env_get() if the environment has not been
287  * loaded yet (GD_FLG_ENV_READY flag is 0). Some environment locations will
288  * support reading the value (slowly) and some will not.
289  *
290  * @varname:	Variable to look up
291  * @return value of variable, or NULL if not found
292  */
293 int env_get_f(const char *name, char *buf, unsigned len);
294 
295 /**
296  * env_get_ulong() - Return an environment variable as an integer value
297  *
298  * Most U-Boot environment variables store hex values. For those which store
299  * (e.g.) base-10 integers, this function can be used to read the value.
300  *
301  * @name:	Variable to look up
302  * @base:	Base to use (e.g. 10 for base 10, 2 for binary)
303  * @default_val: Default value to return if no value is found
304  * @return the value found, or @default_val if none
305  */
306 ulong env_get_ulong(const char *name, int base, ulong default_val);
307 
308 /**
309  * env_get_hex() - Return an environment variable as a hex value
310  *
311  * Decode an environment as a hex number (it may or may not have a 0x
312  * prefix). If the environment variable cannot be found, or does not start
313  * with hex digits, the default value is returned.
314  *
315  * @varname:		Variable to decode
316  * @default_val:	Value to return on error
317  */
318 ulong env_get_hex(const char *varname, ulong default_val);
319 
320 /*
321  * Read an environment variable as a boolean
322  * Return -1 if variable does not exist (default to true)
323  */
324 int env_get_yesno(const char *var);
325 
326 /**
327  * env_set() - set an environment variable
328  *
329  * This sets or deletes the value of an environment variable. For setting the
330  * value the variable is created if it does not already exist.
331  *
332  * @varname: Variable to adjust
333  * @value: Value to set for the variable, or NULL or "" to delete the variable
334  * @return 0 if OK, 1 on error
335  */
336 int env_set(const char *varname, const char *value);
337 
338 /**
339  * env_update() - update sub value of an environment variable
340  *
341  * This add/append/replace the sub value of an environment variable.
342  *
343  * @varname: Variable to adjust
344  * @valude: Value to append/replace
345  * @ignore: Value to be ignore if in varvalue
346  * @return 0 if OK, 1 on error
347  */
348 int env_update_filter(const char *varname, const char *varvalue,
349 		      const char *ignore);
350 
351 /**
352  * env_update() - update sub value of an environment variable
353  *
354  * This add/append/replace the sub value of an environment variable.
355  *
356  * @varname: Variable to adjust
357  * @valude: Value to append/replace
358  * @return 0 if OK, 1 on error
359  */
360 int env_update(const char *varname, const char *varvalue);
361 
362 /**
363  * env_exist() - check sub value of an environment variable is exist or not
364  *
365  * @varname: Variable to look up
366  * @value: Value to check
367  * @return posItion of varvalue if exist, otherwise NULL
368  */
369 char *env_exist(const char *varname, const char *varvalue);
370 
371 /**
372  * env_delete() - delete sub value of an environment variable
373  *
374  * @varname: Variable to look up
375  * @value: Item head of value to delete
376  * @complete_match: complete match whole words
377  * @return 0 if ok, 1 on error
378  */
379 int env_delete(const char *varname, const char *varvalue, int complete_match);
380 
381 /**
382  * env_set_ulong() - set an environment variable to an integer
383  *
384  * @varname: Variable to adjust
385  * @value: Value to set for the variable (will be converted to a string)
386  * @return 0 if OK, 1 on error
387  */
388 int env_set_ulong(const char *varname, ulong value);
389 
390 /**
391  * env_set_hex() - set an environment variable to a hex value
392  *
393  * @varname: Variable to adjust
394  * @value: Value to set for the variable (will be converted to a hex string)
395  * @return 0 if OK, 1 on error
396  */
397 int env_set_hex(const char *varname, ulong value);
398 
399 /**
400  * env_set_addr - Set an environment variable to an address in hex
401  *
402  * @varname:	Environment variable to set
403  * @addr:	Value to set it to
404  * @return 0 if ok, 1 on error
405  */
406 static inline int env_set_addr(const char *varname, const void *addr)
407 {
408 	return env_set_hex(varname, (ulong)addr);
409 }
410 
411 #ifdef CONFIG_AUTO_COMPLETE
412 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
413 #endif
414 int get_env_id (void);
415 
416 void	pci_init      (void);
417 void	pci_init_board(void);
418 
419 #if defined(CONFIG_DTB_RESELECT)
420 int	embedded_dtb_select(void);
421 #endif
422 
423 int	misc_init_f   (void);
424 int	misc_init_r   (void);
425 
426 /* common/exports.c */
427 void	jumptable_init(void);
428 
429 /* common/kallsysm.c */
430 const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
431 
432 /* common/memsize.c */
433 long	get_ram_size  (long *, long);
434 phys_size_t get_effective_memsize(void);
435 
436 /* $(BOARD)/$(BOARD).c */
437 void	reset_phy     (void);
438 void	fdc_hw_init   (void);
439 
440 /* $(BOARD)/eeprom.c */
441 #ifdef CONFIG_CMD_EEPROM
442 void eeprom_init  (int bus);
443 int  eeprom_read  (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
444 int  eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
445 #else
446 /*
447  * Some EEPROM code is depecated because it used the legacy I2C interface. Add
448  * some macros here so we don't have to touch every one of those uses
449  */
450 #define eeprom_init(bus)
451 #define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
452 #define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
453 #endif
454 
455 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C) && defined(CONFIG_SYS_I2C_EEPROM_ADDR)
456 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR
457 #endif
458 
459 #if defined(CONFIG_MPC8XX_SPI)
460 extern void spi_init_f (void);
461 extern void spi_init_r (void);
462 extern ssize_t spi_read	 (uchar *, int, uchar *, int);
463 extern ssize_t spi_write (uchar *, int, uchar *, int);
464 #endif
465 
466 /* $(BOARD)/$(BOARD).c */
467 int board_early_init_f (void);
468 int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */
469 int board_late_init (void);
470 int board_postclk_init (void); /* after clocks/timebase, before env/serial */
471 int board_early_init_r (void);
472 void board_poweroff (void);
473 void board_env_fixup(void);
474 
475 #if defined(CONFIG_SYS_DRAM_TEST)
476 int testdram(void);
477 #endif /* CONFIG_SYS_DRAM_TEST */
478 
479 /* $(CPU)/start.S */
480 int	icache_status (void);
481 void	icache_enable (void);
482 void	icache_disable(void);
483 int	dcache_status (void);
484 void	dcache_enable (void);
485 void	dcache_disable(void);
486 void	mmu_disable(void);
487 #if defined(CONFIG_ARM)
488 void	relocate_code(ulong);
489 #else
490 void	relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn));
491 #endif
492 ulong	get_endaddr   (void);
493 void	trap_init     (ulong);
494 
495 /* $(CPU)/cpu.c */
496 static inline int cpumask_next(int cpu, unsigned int mask)
497 {
498 	for (cpu++; !((1 << cpu) & mask); cpu++)
499 		;
500 
501 	return cpu;
502 }
503 
504 #define for_each_cpu(iter, cpu, num_cpus, mask) \
505 	for (iter = 0, cpu = cpumask_next(-1, mask); \
506 		iter < num_cpus; \
507 		iter++, cpu = cpumask_next(cpu, mask)) \
508 
509 int	cpu_numcores  (void);
510 int	cpu_num_dspcores(void);
511 u32	cpu_mask      (void);
512 u32	cpu_dsp_mask(void);
513 int	is_core_valid (unsigned int);
514 
515 /**
516  * arch_cpu_init() - basic cpu-dependent setup for an architecture
517  *
518  * This is called after early malloc is available. It should handle any
519  * CPU- or SoC- specific init needed to continue the init sequence. See
520  * board_f.c for where it is called. If this is not provided, a default
521  * version (which does nothing) will be used.
522  */
523 int arch_cpu_init(void);
524 
525 void s_init(void);
526 
527 int	checkcpu      (void);
528 int	checkicache   (void);
529 int	checkdcache   (void);
530 void	upmconfig     (unsigned int, unsigned int *, unsigned int);
531 ulong	get_tbclk     (void);
532 void	reset_misc    (void);
533 void	reset_cpu     (ulong addr);
534 void ft_cpu_setup(void *blob, bd_t *bd);
535 void ft_pci_setup(void *blob, bd_t *bd);
536 
537 void smp_set_core_boot_addr(unsigned long addr, int corenr);
538 void smp_kick_all_cpus(void);
539 
540 /* $(CPU)/serial.c */
541 int	serial_init   (void);
542 void	serial_setbrg (void);
543 void	serial_putc   (const char);
544 void	serial_clear  (void);
545 void	serial_putc_raw(const char);
546 void	serial_puts   (const char *);
547 int	serial_getc   (void);
548 int	serial_tstc   (void);
549 
550 /* $(CPU)/speed.c */
551 int	get_clocks (void);
552 ulong	get_bus_freq  (ulong);
553 int get_serial_clock(void);
554 
555 int	cpu_init_r    (void);
556 
557 /* $(CPU)/interrupts.c */
558 int	interrupt_init	   (void);
559 void	timer_interrupt	   (struct pt_regs *);
560 void	external_interrupt (struct pt_regs *);
561 void	irq_install_handler(int, interrupt_handler_t *, void *);
562 void	irq_free_handler   (int);
563 void	reset_timer	   (void);
564 
565 /* Return value of monotonic microsecond timer */
566 unsigned long timer_get_us(void);
567 
568 void	enable_interrupts  (void);
569 int	disable_interrupts (void);
570 
571 /* $(CPU)/.../commproc.c */
572 int	dpram_init (void);
573 uint	dpram_base(void);
574 uint	dpram_base_align(uint align);
575 uint	dpram_alloc(uint size);
576 uint	dpram_alloc_align(uint size,uint align);
577 void	bootcount_store (ulong);
578 ulong	bootcount_load (void);
579 #define BOOTCOUNT_MAGIC		0xB001C041
580 
581 /* $(CPU)/.../<eth> */
582 void mii_init (void);
583 
584 /* $(CPU)/.../lcd.c */
585 ulong	lcd_setmem (ulong);
586 
587 /* $(CPU)/.../video.c */
588 ulong	video_setmem (ulong);
589 
590 /* arch/$(ARCH)/lib/cache.c */
591 void	enable_caches(void);
592 void	flush_cache   (unsigned long, unsigned long);
593 void	flush_dcache_all(void);
594 void	flush_dcache_range(unsigned long start, unsigned long stop);
595 void	invalidate_dcache_range(unsigned long start, unsigned long stop);
596 void	invalidate_dcache_all(void);
597 void	invalidate_icache_all(void);
598 
599 enum {
600 	/* Disable caches (else flush caches but leave them active) */
601 	CBL_DISABLE_CACHES		= 1 << 0,
602 	CBL_SHOW_BOOTSTAGE_REPORT	= 1 << 1,
603 
604 	CBL_ALL				= 3,
605 };
606 
607 /**
608  * Clean up ready for linux
609  *
610  * @param flags		Flags to control what is done
611  */
612 int cleanup_before_linux_select(int flags);
613 
614 /* arch/$(ARCH)/lib/ticks.S */
615 uint64_t get_ticks(void);
616 void	wait_ticks    (unsigned long);
617 
618 /* arch/$(ARCH)/lib/time.c */
619 ulong	usec2ticks    (unsigned long usec);
620 ulong	ticks2usec    (unsigned long ticks);
621 
622 /* lib/gunzip.c */
623 int gzip_parse_header(const unsigned char *src, unsigned long len);
624 int gunzip(void *, int, unsigned char *, unsigned long *);
625 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
626 						int stoponerr, int offset);
627 
628 /**
629  * gzwrite progress indicators: defined weak to allow board-specific
630  * overrides:
631  *
632  *	gzwrite_progress_init called on startup
633  *	gzwrite_progress called during decompress/write loop
634  *	gzwrite_progress_finish called at end of loop to
635  *		indicate success (retcode=0) or failure
636  */
637 void gzwrite_progress_init(u64 expected_size);
638 
639 void gzwrite_progress(int iteration,
640 		     u64 bytes_written,
641 		     u64 total_bytes);
642 
643 void gzwrite_progress_finish(int retcode,
644 			     u64 totalwritten,
645 			     u64 totalsize,
646 			     u32 expected_crc,
647 			     u32 calculated_crc);
648 
649 /**
650  * decompress and write gzipped image from memory to block device
651  *
652  * @param	src		compressed image address
653  * @param	len		compressed image length in bytes
654  * @param	dev		block device descriptor
655  * @param	szwritebuf	bytes per write (pad to erase size)
656  * @param	startoffs	offset in bytes of first write
657  * @param	szexpected	expected uncompressed length
658  *				may be zero to use gzip trailer
659  *				for files under 4GiB
660  */
661 int gzwrite(unsigned char *src, int len,
662 	    struct blk_desc *dev,
663 	    unsigned long szwritebuf,
664 	    u64 startoffs,
665 	    u64 szexpected);
666 
667 /* lib/lz4_wrapper.c */
668 bool lz4_is_valid_header(const unsigned char *h);
669 int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn);
670 
671 /* lib/qsort.c */
672 void qsort(void *base, size_t nmemb, size_t size,
673 	   int(*compar)(const void *, const void *));
674 int strcmp_compar(const void *, const void *);
675 
676 /* lib/uuid.c */
677 #include <uuid.h>
678 
679 /* lib/vsprintf.c */
680 #include <vsprintf.h>
681 
682 /* lib/strmhz.c */
683 char *	strmhz(char *buf, unsigned long hz);
684 
685 /* lib/crc32.c */
686 #include <u-boot/crc.h>
687 
688 /* lib/rand.c */
689 #define RAND_MAX -1U
690 void srand(unsigned int seed);
691 unsigned int rand(void);
692 unsigned int rand_r(unsigned int *seedp);
693 
694 /*
695  * STDIO based functions (can always be used)
696  */
697 /* serial stuff */
698 int	serial_printf (const char *fmt, ...)
699 		__attribute__ ((format (__printf__, 1, 2)));
700 
701 /* lib/gzip.c */
702 int gzip(void *dst, unsigned long *lenp,
703 		unsigned char *src, unsigned long srclen);
704 int zzip(void *dst, unsigned long *lenp, unsigned char *src,
705 		unsigned long srclen, int stoponerr,
706 		int (*func)(unsigned long, unsigned long));
707 
708 /* lib/net_utils.c */
709 #include <net.h>
710 static inline struct in_addr env_get_ip(char *var)
711 {
712 	return string_to_ip(env_get(var));
713 }
714 
715 int	pcmcia_init (void);
716 
717 #ifdef CONFIG_LED_STATUS
718 # include <status_led.h>
719 #endif
720 
721 #include <bootstage.h>
722 
723 #ifdef CONFIG_SHOW_ACTIVITY
724 void show_activity(int arg);
725 #endif
726 
727 /* Multicore arch functions */
728 #ifdef CONFIG_MP
729 int cpu_status(int nr);
730 int cpu_reset(int nr);
731 int cpu_disable(int nr);
732 int cpu_release(int nr, int argc, char * const argv[]);
733 #endif
734 
735 #else	/* __ASSEMBLY__ */
736 
737 /* Drop a C type modifier (like in 3UL) for constants used in assembly. */
738 #define _AC(X, Y)       X
739 
740 #endif	/* __ASSEMBLY__ */
741 
742 /* Put only stuff here that the assembler can digest */
743 
744 /* Declare an unsigned long constant digestable both by C and an assembler. */
745 #define UL(x)           _AC(x, UL)
746 
747 #ifdef CONFIG_POST
748 #define CONFIG_HAS_POST
749 #ifndef CONFIG_POST_ALT_LIST
750 #define CONFIG_POST_STD_LIST
751 #endif
752 #endif
753 
754 #ifdef CONFIG_INIT_CRITICAL
755 #error CONFIG_INIT_CRITICAL is deprecated!
756 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README.
757 #endif
758 
759 #define ROUND(a,b)		(((a) + (b) - 1) & ~((b) - 1))
760 
761 /*
762  * check_member() - Check the offset of a structure member
763  *
764  * @structure:	Name of structure (e.g. global_data)
765  * @member:	Name of member (e.g. baudrate)
766  * @offset:	Expected offset in bytes
767  */
768 #define check_member(structure, member, offset) _Static_assert( \
769 	offsetof(struct structure, member) == offset, \
770 	"`struct " #structure "` offset for `" #member "` is not " #offset)
771 
772 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */
773 #ifdef CONFIG_EFI_STUB
774 #define ll_boot_init()	false
775 #else
776 #define ll_boot_init()	true
777 #endif
778 
779 /* Pull in stuff for the build system */
780 #ifdef DO_DEPS_ONLY
781 # include <environment.h>
782 #endif
783 
784 #endif	/* __COMMON_H_ */
785