2 * (C) Copyright 2000-2009
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
11 #ifndef __ASSEMBLY__ /* put C only stuff in this section */
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;
18 /* Allow sharing constants with type modifiers between C and assembly. */
19 #define _AC(X, Y) (X##Y)
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>
32 #include <linux/kernel.h>
38 /* Bring in printf format macros if inttypes.h is included */
39 #define __STDC_FORMAT_MACROS
42 #define CONFIG_SYS_SUPPORT_64BIT_DATA
51 #ifdef CONFIG_SPL_BUILD
57 /* Define this at the top of a file to add a prefix to debug messages */
59 #define pr_fmt(fmt) fmt
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
67 #define debug_cond(cond, fmt, args...) \
70 printf(pr_fmt(fmt), ##args); \
73 /* Show a message if DEBUG is defined in a file */
74 #define debug(fmt, args...) \
75 debug_cond(_DEBUG, fmt, ##args)
77 /* Show a message if not in SPL */
78 #define warn_non_spl(fmt, args...) \
79 debug_cond(!_SPL_BUILD, fmt, ##args)
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).
90 void __assert_fail(const char *assertion, const char *file, unsigned line,
91 const char *function);
93 ({ if (!(x) && _DEBUG) \
94 __assert_fail(#x, __FILE__, __LINE__, __func__); })
96 #define error(fmt, args...) do { \
97 printf("ERROR: " pr_fmt(fmt) "\nat %s:%d/%s()\n", \
98 ##args, __FILE__, __LINE__, __func__); \
103 printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
106 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
109 typedef void (interrupt_handler_t)(void *);
111 #include <asm/u-boot.h> /* boot information for Linux kernel */
112 #include <asm/global_data.h> /* global data used for startup functions */
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)
121 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
125 * Function Prototypes
130 * dram_init_banksize() - Set up DRAM bank sizes
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()
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().
142 * @return 0 if OK, -ve on error
144 int dram_init_banksize(void);
146 void hang (void) __attribute__ ((noreturn));
148 int timer_init(void);
151 #include <display_options.h>
154 void main_loop (void);
155 int run_command(const char *cmd, int flag);
156 int run_command_repeatable(const char *cmd, int flag);
159 * Run a list of commands separated by ; or even \0
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.
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.
169 int run_command_list(const char *cmd, int len, int flag);
171 /* arch/$(ARCH)/lib/board.c */
172 void board_init_f(ulong);
173 void board_init_r(gd_t *, ulong) __attribute__ ((noreturn));
176 * ulong board_init_f_alloc_reserve - allocate reserved area
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.
182 * @top: top of the reserve area, growing down.
183 * @return: bottom of reserved area
185 ulong board_init_f_alloc_reserve(ulong top);
188 * board_init_f_init_reserve - initialize the reserved area(s)
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.
193 * @base: top from which reservation was done
195 void board_init_f_init_reserve(ulong base);
198 * arch_setup_gd() - Set up the global_data pointer
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:
207 * @gd_ptr: Pointer to global data
209 void arch_setup_gd(gd_t *gd_ptr);
211 int checkboard(void);
212 int show_board_info(void);
213 int checkflash(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);
221 int print_cpuinfo(void);
222 int update_flash_size(int flash_size);
223 int arch_early_init_r(void);
226 * setup_board_extra() - Fill in extra details in the bd_t structure
228 * @return 0 if OK, -ve on error
230 int setup_board_extra(void);
233 * arch_fsp_init() - perform firmware support package init
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
239 int arch_fsp_init(void);
242 * arch_cpu_init_dm() - init CPU after driver model is available
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
248 * @return 0 if OK, -ve on error
250 int arch_cpu_init_dm(void);
253 * Reserve all necessary stacks
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.
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.
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.
266 * @return 0 if no error
268 __weak int arch_reserve_stacks(void);
271 * Show the DRAM size in a board-specific way
273 * This is used by boards to display DRAM information in their own way.
275 * @param size Size of DRAM (which should be displayed along with other info)
277 void board_show_dram(phys_size_t size);
280 * arch_fixup_fdt() - Write arch-specific information to fdt
282 * Defined in arch/$(ARCH)/lib/bootm-fdt.c
284 * @blob: FDT blob to write to
285 * @return 0 if ok, or -ve FDT_ERR_... on failure
287 int arch_fixup_fdt(void *blob);
290 void flash_perror (int);
292 /* common/cmd_source.c */
293 int source (ulong addr, const char *fit_uname);
295 extern ulong load_addr; /* Default Load Address */
296 extern ulong save_addr; /* Default Save Address */
297 extern ulong save_size; /* Default Save Size */
299 /* common/cmd_net.c */
300 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
302 /* common/cmd_fat.c */
303 int do_fat_fsload(cmd_tbl_t *, int, int, char * const []);
305 /* common/cmd_ext2.c */
306 int do_ext2load(cmd_tbl_t *, int, int, char * const []);
308 /* common/cmd_nvedit.c */
310 void env_relocate (void);
311 int envmatch (uchar *, int);
313 /* Avoid unfortunate conflict with libc's getenv() */
314 #ifdef CONFIG_SANDBOX
315 #define getenv uboot_getenv
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);
322 * getenv_hex() - Return an environment variable as a hex value
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.
328 * @varname: Variable to decode
329 * @default_val: Value to return on error
331 ulong getenv_hex(const char *varname, ulong default_val);
334 * Read an environment variable as a boolean
335 * Return -1 if variable does not exist (default to true)
337 int getenv_yesno(const char *var);
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);
343 * setenv_addr - Set an environment variable to an address in hex
345 * @varname: Environment variable to set
346 * @addr: Value to set it to
347 * @return 0 if ok, 1 on error
349 static inline int setenv_addr(const char *varname, const void *addr)
351 return setenv_hex(varname, (ulong)addr);
354 #ifdef CONFIG_AUTO_COMPLETE
355 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
357 int get_env_id (void);
359 void pci_init (void);
360 void pci_init_board(void);
362 int misc_init_f (void);
363 int misc_init_r (void);
365 /* common/exports.c */
366 void jumptable_init(void);
368 /* common/kallsysm.c */
369 const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
371 /* common/memsize.c */
372 long get_ram_size (long *, long);
373 phys_size_t get_effective_memsize(void);
375 /* $(BOARD)/$(BOARD).c */
376 void reset_phy (void);
377 void fdc_hw_init (void);
379 /* $(BOARD)/eeprom.c */
380 #ifdef CONFIG_CMD_EEPROM
381 void eeprom_init (int bus);
382 int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
383 int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
386 * Some EEPROM code is depecated because it used the legacy I2C interface. Add
387 * some macros here so we don't have to touch every one of those uses
389 #define eeprom_init(bus)
390 #define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
391 #define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
395 * Set this up regardless of board
396 * type, to prevent errors.
398 #if defined(CONFIG_SPI) || !defined(CONFIG_SYS_I2C_EEPROM_ADDR)
399 # define CONFIG_SYS_DEF_EEPROM_ADDR 0
401 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
402 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR
404 #endif /* CONFIG_SPI || !defined(CONFIG_SYS_I2C_EEPROM_ADDR) */
406 #if defined(CONFIG_SPI)
407 extern void spi_init_f (void);
408 extern void spi_init_r (void);
409 extern ssize_t spi_read (uchar *, int, uchar *, int);
410 extern ssize_t spi_write (uchar *, int, uchar *, int);
413 /* $(BOARD)/$(BOARD).c */
414 int board_early_init_f (void);
415 int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */
416 int board_late_init (void);
417 int board_postclk_init (void); /* after clocks/timebase, before env/serial */
418 int board_early_init_r (void);
419 void board_poweroff (void);
421 #if defined(CONFIG_SYS_DRAM_TEST)
423 #endif /* CONFIG_SYS_DRAM_TEST */
426 int icache_status (void);
427 void icache_enable (void);
428 void icache_disable(void);
429 int dcache_status (void);
430 void dcache_enable (void);
431 void dcache_disable(void);
432 void mmu_disable(void);
433 #if defined(CONFIG_ARM)
434 void relocate_code(ulong);
436 void relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn));
438 ulong get_endaddr (void);
439 void trap_init (ulong);
442 static inline int cpumask_next(int cpu, unsigned int mask)
444 for (cpu++; !((1 << cpu) & mask); cpu++)
450 #define for_each_cpu(iter, cpu, num_cpus, mask) \
451 for (iter = 0, cpu = cpumask_next(-1, mask); \
453 iter++, cpu = cpumask_next(cpu, mask)) \
455 int cpu_numcores (void);
456 int cpu_num_dspcores(void);
458 u32 cpu_dsp_mask(void);
459 int is_core_valid (unsigned int);
462 * arch_cpu_init() - basic cpu-dependent setup for an architecture
464 * This is called after early malloc is available. It should handle any
465 * CPU- or SoC- specific init needed to continue the init sequence. See
466 * board_f.c for where it is called. If this is not provided, a default
467 * version (which does nothing) will be used.
469 int arch_cpu_init(void);
472 int checkicache (void);
473 int checkdcache (void);
474 void upmconfig (unsigned int, unsigned int *, unsigned int);
475 ulong get_tbclk (void);
476 void reset_misc (void);
477 void reset_cpu (ulong addr);
478 void ft_cpu_setup(void *blob, bd_t *bd);
479 void ft_pci_setup(void *blob, bd_t *bd);
481 void smp_set_core_boot_addr(unsigned long addr, int corenr);
482 void smp_kick_all_cpus(void);
484 /* $(CPU)/serial.c */
485 int serial_init (void);
486 void serial_setbrg (void);
487 void serial_putc (const char);
488 void serial_putc_raw(const char);
489 void serial_puts (const char *);
490 int serial_getc (void);
491 int serial_tstc (void);
493 /* These versions take a stdio_dev pointer */
495 int serial_stub_getc(struct stdio_dev *sdev);
496 int serial_stub_tstc(struct stdio_dev *sdev);
499 int get_clocks (void);
500 ulong get_bus_freq (ulong);
501 int get_serial_clock(void);
503 int cpu_init_r (void);
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);
513 /* Return value of monotonic microsecond timer */
514 unsigned long timer_get_us(void);
516 void enable_interrupts (void);
517 int disable_interrupts (void);
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
529 /* $(CPU)/.../<eth> */
530 void mii_init (void);
532 /* $(CPU)/.../lcd.c */
533 ulong lcd_setmem (ulong);
535 /* $(CPU)/.../video.c */
536 ulong video_setmem (ulong);
538 /* arch/$(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);
548 /* Disable caches (else flush caches but leave them active) */
549 CBL_DISABLE_CACHES = 1 << 0,
550 CBL_SHOW_BOOTSTAGE_REPORT = 1 << 1,
556 * Clean up ready for linux
558 * @param flags Flags to control what is done
560 int cleanup_before_linux_select(int flags);
562 /* arch/$(ARCH)/lib/ticks.S */
563 uint64_t get_ticks(void);
564 void wait_ticks (unsigned long);
566 /* arch/$(ARCH)/lib/time.c */
567 ulong usec2ticks (unsigned long usec);
568 ulong ticks2usec (unsigned long ticks);
571 int gunzip(void *, int, unsigned char *, unsigned long *);
572 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
573 int stoponerr, int offset);
576 * gzwrite progress indicators: defined weak to allow board-specific
579 * gzwrite_progress_init called on startup
580 * gzwrite_progress called during decompress/write loop
581 * gzwrite_progress_finish called at end of loop to
582 * indicate success (retcode=0) or failure
584 void gzwrite_progress_init(u64 expected_size);
586 void gzwrite_progress(int iteration,
590 void gzwrite_progress_finish(int retcode,
597 * decompress and write gzipped image from memory to block device
599 * @param src compressed image address
600 * @param len compressed image length in bytes
601 * @param dev block device descriptor
602 * @param szwritebuf bytes per write (pad to erase size)
603 * @param startoffs offset in bytes of first write
604 * @param szexpected expected uncompressed length
605 * may be zero to use gzip trailer
606 * for files under 4GiB
608 int gzwrite(unsigned char *src, int len,
609 struct blk_desc *dev,
610 unsigned long szwritebuf,
614 /* lib/lz4_wrapper.c */
615 int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn);
618 void qsort(void *base, size_t nmemb, size_t size,
619 int(*compar)(const void *, const void *));
620 int strcmp_compar(const void *, const void *);
626 #include <vsprintf.h>
629 char * strmhz(char *buf, unsigned long hz);
632 #include <u-boot/crc.h>
636 void srand(unsigned int seed);
637 unsigned int rand(void);
638 unsigned int rand_r(unsigned int *seedp);
641 * STDIO based functions (can always be used)
644 int serial_printf (const char *fmt, ...)
645 __attribute__ ((format (__printf__, 1, 2)));
651 #if !defined(CONFIG_SPL_BUILD) || \
652 (defined(CONFIG_TPL_BUILD) && defined(CONFIG_TPL_SERIAL_SUPPORT)) || \
653 (defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) && \
654 defined(CONFIG_SPL_SERIAL_SUPPORT))
655 void putc(const char c);
656 void puts(const char *s);
657 int printf(const char *fmt, ...)
658 __attribute__ ((format (__printf__, 1, 2)));
659 int vprintf(const char *fmt, va_list args);
661 #define putc(...) do { } while (0)
662 #define puts(...) do { } while (0)
663 #define printf(...) do { } while (0)
664 #define vprintf(...) do { } while (0)
668 #define eputc(c) fputc(stderr, c)
669 #define eputs(s) fputs(stderr, s)
670 #define eprintf(fmt,args...) fprintf(stderr,fmt ,##args)
673 * FILE based functions (can only be used AFTER relocation!)
680 int fprintf(int file, const char *fmt, ...)
681 __attribute__ ((format (__printf__, 2, 3)));
682 void fputs(int file, const char *s);
683 void fputc(int file, const char c);
688 int gzip(void *dst, unsigned long *lenp,
689 unsigned char *src, unsigned long srclen);
690 int zzip(void *dst, unsigned long *lenp, unsigned char *src,
691 unsigned long srclen, int stoponerr,
692 int (*func)(unsigned long, unsigned long));
694 /* lib/net_utils.c */
696 static inline struct in_addr getenv_ip(char *var)
698 return string_to_ip(getenv(var));
701 int pcmcia_init (void);
703 #ifdef CONFIG_LED_STATUS
704 # include <status_led.h>
707 #include <bootstage.h>
709 #ifdef CONFIG_SHOW_ACTIVITY
710 void show_activity(int arg);
713 /* Multicore arch functions */
715 int cpu_status(int nr);
716 int cpu_reset(int nr);
717 int cpu_disable(int nr);
718 int cpu_release(int nr, int argc, char * const argv[]);
721 #else /* __ASSEMBLY__ */
723 /* Drop a C type modifier (like in 3UL) for constants used in assembly. */
726 #endif /* __ASSEMBLY__ */
728 /* Put only stuff here that the assembler can digest */
730 /* Declare an unsigned long constant digestable both by C and an assembler. */
731 #define UL(x) _AC(x, UL)
734 #define CONFIG_HAS_POST
735 #ifndef CONFIG_POST_ALT_LIST
736 #define CONFIG_POST_STD_LIST
740 #ifdef CONFIG_INIT_CRITICAL
741 #error CONFIG_INIT_CRITICAL is deprecated!
742 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README.
745 #define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1))
748 * check_member() - Check the offset of a structure member
750 * @structure: Name of structure (e.g. global_data)
751 * @member: Name of member (e.g. baudrate)
752 * @offset: Expected offset in bytes
754 #define check_member(structure, member, offset) _Static_assert( \
755 offsetof(struct structure, member) == offset, \
756 "`struct " #structure "` offset for `" #member "` is not " #offset)
758 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */
759 #ifdef CONFIG_EFI_STUB
760 #define ll_boot_init() false
762 #define ll_boot_init() true
765 /* Pull in stuff for the build system */
767 # include <environment.h>
770 #endif /* __COMMON_H_ */