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>
33 #include <linux/kernel.h>
39 /* Bring in printf format macros if inttypes.h is included */
40 #define __STDC_FORMAT_MACROS
43 #define CONFIG_SYS_SUPPORT_64BIT_DATA
52 #ifdef CONFIG_SPL_BUILD
58 /* Define this at the top of a file to add a prefix to debug messages */
60 #define pr_fmt(fmt) fmt
64 * Output a debug text when condition "cond" is met. The "cond" should be
65 * computed by a preprocessor in the best case, allowing for the best
68 #define debug_cond(cond, fmt, args...) \
71 printf(pr_fmt(fmt), ##args); \
74 /* Show a message if DEBUG is defined in a file */
75 #define debug(fmt, args...) \
76 debug_cond(_DEBUG, fmt, ##args)
78 /* Show a message if not in SPL */
79 #define warn_non_spl(fmt, args...) \
80 debug_cond(!_SPL_BUILD, fmt, ##args)
83 * An assertion is run-time check done in debug mode only. If DEBUG is not
84 * defined then it is skipped. If DEBUG is defined and the assertion fails,
85 * then it calls panic*( which may or may not reset/halt U-Boot (see
86 * CONFIG_PANIC_HANG), It is hoped that all failing assertions are found
87 * before release, and after release it is hoped that they don't matter. But
88 * in any case these failing assertions cannot be fixed with a reset (which
89 * may just do the same assertion again).
91 void __assert_fail(const char *assertion, const char *file, unsigned line,
92 const char *function);
94 ({ if (!(x) && _DEBUG) \
95 __assert_fail(#x, __FILE__, __LINE__, __func__); })
97 #define error(fmt, args...) do { \
98 printf("ERROR: " pr_fmt(fmt) "\nat %s:%d/%s()\n", \
99 ##args, __FILE__, __LINE__, __func__); \
104 printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
107 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
110 typedef void (interrupt_handler_t)(void *);
112 #include <asm/u-boot.h> /* boot information for Linux kernel */
113 #include <asm/global_data.h> /* global data used for startup functions */
115 #if defined(CONFIG_ENV_IS_EMBEDDED)
116 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
117 #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
118 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
119 defined(CONFIG_ENV_IS_IN_NVRAM)
120 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
122 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
126 * Function Prototypes
131 * dram_init_banksize() - Set up DRAM bank sizes
133 * This can be implemented by boards to set up the DRAM bank information in
134 * gd->bd->bi_dram(). It is called just before relocation, after dram_init()
137 * If this is not provided, a default implementation will try to set up a
138 * single bank. It will do this if CONFIG_NR_DRAM_BANKS and
139 * CONFIG_SYS_SDRAM_BASE are set. The bank will have a start address of
140 * CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to
141 * get_effective_memsize().
143 * @return 0 if OK, -ve on error
145 int dram_init_banksize(void);
147 void hang (void) __attribute__ ((noreturn));
149 int timer_init(void);
152 #include <display_options.h>
155 void main_loop (void);
156 int run_command(const char *cmd, int flag);
157 int run_command_repeatable(const char *cmd, int flag);
160 * Run a list of commands separated by ; or even \0
162 * Note that if 'len' is not -1, then the command does not need to be nul
163 * terminated, Memory will be allocated for the command in that case.
165 * @param cmd List of commands to run, each separated bu semicolon
166 * @param len Length of commands excluding terminator if known (-1 if not)
167 * @param flag Execution flags (CMD_FLAG_...)
168 * @return 0 on success, or != 0 on error.
170 int run_command_list(const char *cmd, int len, int flag);
172 /* arch/$(ARCH)/lib/board.c */
173 void board_init_f(ulong);
174 void board_init_r(gd_t *, ulong) __attribute__ ((noreturn));
177 * ulong board_init_f_alloc_reserve - allocate reserved area
179 * This function is called by each architecture very early in the start-up
180 * code to allow the C runtime to reserve space on the stack for writable
181 * 'globals' such as GD and the malloc arena.
183 * @top: top of the reserve area, growing down.
184 * @return: bottom of reserved area
186 ulong board_init_f_alloc_reserve(ulong top);
189 * board_init_f_init_reserve - initialize the reserved area(s)
191 * This function is called once the C runtime has allocated the reserved
192 * area on the stack. It must initialize the GD at the base of that area.
194 * @base: top from which reservation was done
196 void board_init_f_init_reserve(ulong base);
199 * arch_setup_gd() - Set up the global_data pointer
201 * This pointer is special in some architectures and cannot easily be assigned
202 * to. For example on x86 it is implemented by adding a specific record to its
203 * Global Descriptor Table! So we we provide a function to carry out this task.
204 * For most architectures this can simply be:
208 * @gd_ptr: Pointer to global data
210 void arch_setup_gd(gd_t *gd_ptr);
212 int checkboard(void);
213 int show_board_info(void);
214 int checkflash(void);
216 int last_stage_init(void);
217 extern ulong monitor_flash_len;
218 int mac_read_from_eeprom(void);
219 extern u8 __dtb_dt_begin[]; /* embedded device tree blob */
220 int set_cpu_clk_info(void);
222 int print_cpuinfo(void);
223 int update_flash_size(int flash_size);
224 int arch_early_init_r(void);
227 * setup_board_extra() - Fill in extra details in the bd_t structure
229 * @return 0 if OK, -ve on error
231 int setup_board_extra(void);
234 * arch_fsp_init() - perform firmware support package init
236 * Where U-Boot relies on binary blobs to handle part of the system init, this
237 * function can be used to set up the blobs. This is used on some Intel
240 int arch_fsp_init(void);
243 * arch_cpu_init_dm() - init CPU after driver model is available
245 * This is called immediately after driver model is available before
246 * relocation. This is similar to arch_cpu_init() but is able to reference
249 * @return 0 if OK, -ve on error
251 int arch_cpu_init_dm(void);
254 * Reserve all necessary stacks
256 * This is used in generic board init sequence in common/board_f.c. Each
257 * architecture could provide this function to tailor the required stacks.
259 * On entry gd->start_addr_sp is pointing to the suggested top of the stack.
260 * The callee ensures gd->start_add_sp is 16-byte aligned, so architectures
261 * require only this can leave it untouched.
263 * On exit gd->start_addr_sp and gd->irq_sp should be set to the respective
264 * positions of the stack. The stack pointer(s) will be set to this later.
265 * gd->irq_sp is only required, if the architecture needs it.
267 * @return 0 if no error
269 __weak int arch_reserve_stacks(void);
272 * Show the DRAM size in a board-specific way
274 * This is used by boards to display DRAM information in their own way.
276 * @param size Size of DRAM (which should be displayed along with other info)
278 void board_show_dram(phys_size_t size);
281 * arch_fixup_fdt() - Write arch-specific information to fdt
283 * Defined in arch/$(ARCH)/lib/bootm-fdt.c
285 * @blob: FDT blob to write to
286 * @return 0 if ok, or -ve FDT_ERR_... on failure
288 int arch_fixup_fdt(void *blob);
290 int reserve_mmu(void);
292 void flash_perror (int);
294 /* common/cmd_source.c */
295 int source (ulong addr, const char *fit_uname);
297 extern ulong load_addr; /* Default Load Address */
298 extern ulong save_addr; /* Default Save Address */
299 extern ulong save_size; /* Default Save Size */
301 /* common/cmd_net.c */
302 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
304 /* common/cmd_fat.c */
305 int do_fat_fsload(cmd_tbl_t *, int, int, char * const []);
307 /* common/cmd_ext2.c */
308 int do_ext2load(cmd_tbl_t *, int, int, char * const []);
310 /* common/cmd_nvedit.c */
312 void env_relocate (void);
313 int envmatch (uchar *, int);
316 * env_get() - Look up the value of an environment variable
318 * In U-Boot proper this can be called before relocation (which is when the
319 * environment is loaded from storage, i.e. GD_FLG_ENV_READY is 0). In that
320 * case this function calls env_get_f().
322 * @varname: Variable to look up
323 * @return value of variable, or NULL if not found
325 char *env_get(const char *varname);
328 * env_get_f() - Look up the value of an environment variable (early)
330 * This function is called from env_get() if the environment has not been
331 * loaded yet (GD_FLG_ENV_READY flag is 0). Some environment locations will
332 * support reading the value (slowly) and some will not.
334 * @varname: Variable to look up
335 * @return value of variable, or NULL if not found
337 int env_get_f(const char *name, char *buf, unsigned len);
340 * env_get_ulong() - Return an environment variable as an integer value
342 * Most U-Boot environment variables store hex values. For those which store
343 * (e.g.) base-10 integers, this function can be used to read the value.
345 * @name: Variable to look up
346 * @base: Base to use (e.g. 10 for base 10, 2 for binary)
347 * @default_val: Default value to return if no value is found
348 * @return the value found, or @default_val if none
350 ulong env_get_ulong(const char *name, int base, ulong default_val);
353 * env_get_hex() - Return an environment variable as a hex value
355 * Decode an environment as a hex number (it may or may not have a 0x
356 * prefix). If the environment variable cannot be found, or does not start
357 * with hex digits, the default value is returned.
359 * @varname: Variable to decode
360 * @default_val: Value to return on error
362 ulong env_get_hex(const char *varname, ulong default_val);
365 * Read an environment variable as a boolean
366 * Return -1 if variable does not exist (default to true)
368 int env_get_yesno(const char *var);
371 * env_set() - set an environment variable
373 * This sets or deletes the value of an environment variable. For setting the
374 * value the variable is created if it does not already exist.
376 * @varname: Variable to adjust
377 * @value: Value to set for the variable, or NULL or "" to delete the variable
378 * @return 0 if OK, 1 on error
380 int env_set(const char *varname, const char *value);
383 * env_set_ulong() - set an environment variable to an integer
385 * @varname: Variable to adjust
386 * @value: Value to set for the variable (will be converted to a string)
387 * @return 0 if OK, 1 on error
389 int env_set_ulong(const char *varname, ulong value);
392 * env_set_hex() - set an environment variable to a hex value
394 * @varname: Variable to adjust
395 * @value: Value to set for the variable (will be converted to a hex string)
396 * @return 0 if OK, 1 on error
398 int env_set_hex(const char *varname, ulong value);
401 * env_set_addr - Set an environment variable to an address in hex
403 * @varname: Environment variable to set
404 * @addr: Value to set it to
405 * @return 0 if ok, 1 on error
407 static inline int env_set_addr(const char *varname, const void *addr)
409 return env_set_hex(varname, (ulong)addr);
412 #ifdef CONFIG_AUTO_COMPLETE
413 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
415 int get_env_id (void);
417 void pci_init (void);
418 void pci_init_board(void);
420 #if defined(CONFIG_DTB_RESELECT)
421 int embedded_dtb_select(void);
424 int misc_init_f (void);
425 int misc_init_r (void);
427 /* common/exports.c */
428 void jumptable_init(void);
430 /* common/kallsysm.c */
431 const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
433 /* common/memsize.c */
434 long get_ram_size (long *, long);
435 phys_size_t get_effective_memsize(void);
437 /* $(BOARD)/$(BOARD).c */
438 void reset_phy (void);
439 void fdc_hw_init (void);
441 /* $(BOARD)/eeprom.c */
442 #ifdef CONFIG_CMD_EEPROM
443 void eeprom_init (int bus);
444 int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
445 int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
448 * Some EEPROM code is depecated because it used the legacy I2C interface. Add
449 * some macros here so we don't have to touch every one of those uses
451 #define eeprom_init(bus)
452 #define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
453 #define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
457 * Set this up regardless of board
458 * type, to prevent errors.
460 #if defined(CONFIG_SPI) || !defined(CONFIG_SYS_I2C_EEPROM_ADDR)
461 # define CONFIG_SYS_DEF_EEPROM_ADDR 0
463 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
464 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR
466 #endif /* CONFIG_SPI || !defined(CONFIG_SYS_I2C_EEPROM_ADDR) */
468 #if defined(CONFIG_SPI)
469 extern void spi_init_f (void);
470 extern void spi_init_r (void);
471 extern ssize_t spi_read (uchar *, int, uchar *, int);
472 extern ssize_t spi_write (uchar *, int, uchar *, int);
475 /* $(BOARD)/$(BOARD).c */
476 int board_early_init_f (void);
477 int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */
478 int board_late_init (void);
479 int board_postclk_init (void); /* after clocks/timebase, before env/serial */
480 int board_early_init_r (void);
481 void board_poweroff (void);
483 #if defined(CONFIG_SYS_DRAM_TEST)
485 #endif /* CONFIG_SYS_DRAM_TEST */
488 int icache_status (void);
489 void icache_enable (void);
490 void icache_disable(void);
491 int dcache_status (void);
492 void dcache_enable (void);
493 void dcache_disable(void);
494 void mmu_disable(void);
495 #if defined(CONFIG_ARM)
496 void relocate_code(ulong);
498 void relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn));
500 ulong get_endaddr (void);
501 void trap_init (ulong);
504 static inline int cpumask_next(int cpu, unsigned int mask)
506 for (cpu++; !((1 << cpu) & mask); cpu++)
512 #define for_each_cpu(iter, cpu, num_cpus, mask) \
513 for (iter = 0, cpu = cpumask_next(-1, mask); \
515 iter++, cpu = cpumask_next(cpu, mask)) \
517 int cpu_numcores (void);
518 int cpu_num_dspcores(void);
520 u32 cpu_dsp_mask(void);
521 int is_core_valid (unsigned int);
524 * arch_cpu_init() - basic cpu-dependent setup for an architecture
526 * This is called after early malloc is available. It should handle any
527 * CPU- or SoC- specific init needed to continue the init sequence. See
528 * board_f.c for where it is called. If this is not provided, a default
529 * version (which does nothing) will be used.
531 int arch_cpu_init(void);
534 int checkicache (void);
535 int checkdcache (void);
536 void upmconfig (unsigned int, unsigned int *, unsigned int);
537 ulong get_tbclk (void);
538 void reset_misc (void);
539 void reset_cpu (ulong addr);
540 void ft_cpu_setup(void *blob, bd_t *bd);
541 void ft_pci_setup(void *blob, bd_t *bd);
543 void smp_set_core_boot_addr(unsigned long addr, int corenr);
544 void smp_kick_all_cpus(void);
546 /* $(CPU)/serial.c */
547 int serial_init (void);
548 void serial_setbrg (void);
549 void serial_putc (const char);
550 void serial_putc_raw(const char);
551 void serial_puts (const char *);
552 int serial_getc (void);
553 int serial_tstc (void);
556 int get_clocks (void);
557 ulong get_bus_freq (ulong);
558 int get_serial_clock(void);
560 int cpu_init_r (void);
562 /* $(CPU)/interrupts.c */
563 int interrupt_init (void);
564 void timer_interrupt (struct pt_regs *);
565 void external_interrupt (struct pt_regs *);
566 void irq_install_handler(int, interrupt_handler_t *, void *);
567 void irq_free_handler (int);
568 void reset_timer (void);
570 /* Return value of monotonic microsecond timer */
571 unsigned long timer_get_us(void);
573 void enable_interrupts (void);
574 int disable_interrupts (void);
576 /* $(CPU)/.../commproc.c */
577 int dpram_init (void);
578 uint dpram_base(void);
579 uint dpram_base_align(uint align);
580 uint dpram_alloc(uint size);
581 uint dpram_alloc_align(uint size,uint align);
582 void bootcount_store (ulong);
583 ulong bootcount_load (void);
584 #define BOOTCOUNT_MAGIC 0xB001C041
586 /* $(CPU)/.../<eth> */
587 void mii_init (void);
589 /* $(CPU)/.../lcd.c */
590 ulong lcd_setmem (ulong);
592 /* $(CPU)/.../video.c */
593 ulong video_setmem (ulong);
595 /* arch/$(ARCH)/lib/cache.c */
596 void enable_caches(void);
597 void flush_cache (unsigned long, unsigned long);
598 void flush_dcache_all(void);
599 void flush_dcache_range(unsigned long start, unsigned long stop);
600 void invalidate_dcache_range(unsigned long start, unsigned long stop);
601 void invalidate_dcache_all(void);
602 void invalidate_icache_all(void);
605 /* Disable caches (else flush caches but leave them active) */
606 CBL_DISABLE_CACHES = 1 << 0,
607 CBL_SHOW_BOOTSTAGE_REPORT = 1 << 1,
613 * Clean up ready for linux
615 * @param flags Flags to control what is done
617 int cleanup_before_linux_select(int flags);
619 /* arch/$(ARCH)/lib/ticks.S */
620 uint64_t get_ticks(void);
621 void wait_ticks (unsigned long);
623 /* arch/$(ARCH)/lib/time.c */
624 ulong usec2ticks (unsigned long usec);
625 ulong ticks2usec (unsigned long ticks);
628 int gunzip(void *, int, unsigned char *, unsigned long *);
629 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
630 int stoponerr, int offset);
633 * gzwrite progress indicators: defined weak to allow board-specific
636 * gzwrite_progress_init called on startup
637 * gzwrite_progress called during decompress/write loop
638 * gzwrite_progress_finish called at end of loop to
639 * indicate success (retcode=0) or failure
641 void gzwrite_progress_init(u64 expected_size);
643 void gzwrite_progress(int iteration,
647 void gzwrite_progress_finish(int retcode,
654 * decompress and write gzipped image from memory to block device
656 * @param src compressed image address
657 * @param len compressed image length in bytes
658 * @param dev block device descriptor
659 * @param szwritebuf bytes per write (pad to erase size)
660 * @param startoffs offset in bytes of first write
661 * @param szexpected expected uncompressed length
662 * may be zero to use gzip trailer
663 * for files under 4GiB
665 int gzwrite(unsigned char *src, int len,
666 struct blk_desc *dev,
667 unsigned long szwritebuf,
671 /* lib/lz4_wrapper.c */
672 int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn);
675 void qsort(void *base, size_t nmemb, size_t size,
676 int(*compar)(const void *, const void *));
677 int strcmp_compar(const void *, const void *);
683 #include <vsprintf.h>
686 char * strmhz(char *buf, unsigned long hz);
689 #include <u-boot/crc.h>
693 void srand(unsigned int seed);
694 unsigned int rand(void);
695 unsigned int rand_r(unsigned int *seedp);
698 * STDIO based functions (can always be used)
701 int serial_printf (const char *fmt, ...)
702 __attribute__ ((format (__printf__, 1, 2)));
705 int gzip(void *dst, unsigned long *lenp,
706 unsigned char *src, unsigned long srclen);
707 int zzip(void *dst, unsigned long *lenp, unsigned char *src,
708 unsigned long srclen, int stoponerr,
709 int (*func)(unsigned long, unsigned long));
711 /* lib/net_utils.c */
713 static inline struct in_addr env_get_ip(char *var)
715 return string_to_ip(env_get(var));
718 int pcmcia_init (void);
720 #ifdef CONFIG_LED_STATUS
721 # include <status_led.h>
724 #include <bootstage.h>
726 #ifdef CONFIG_SHOW_ACTIVITY
727 void show_activity(int arg);
730 /* Multicore arch functions */
732 int cpu_status(int nr);
733 int cpu_reset(int nr);
734 int cpu_disable(int nr);
735 int cpu_release(int nr, int argc, char * const argv[]);
738 #else /* __ASSEMBLY__ */
740 /* Drop a C type modifier (like in 3UL) for constants used in assembly. */
743 #endif /* __ASSEMBLY__ */
745 /* Put only stuff here that the assembler can digest */
747 /* Declare an unsigned long constant digestable both by C and an assembler. */
748 #define UL(x) _AC(x, UL)
751 #define CONFIG_HAS_POST
752 #ifndef CONFIG_POST_ALT_LIST
753 #define CONFIG_POST_STD_LIST
757 #ifdef CONFIG_INIT_CRITICAL
758 #error CONFIG_INIT_CRITICAL is deprecated!
759 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README.
762 #define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1))
765 * check_member() - Check the offset of a structure member
767 * @structure: Name of structure (e.g. global_data)
768 * @member: Name of member (e.g. baudrate)
769 * @offset: Expected offset in bytes
771 #define check_member(structure, member, offset) _Static_assert( \
772 offsetof(struct structure, member) == offset, \
773 "`struct " #structure "` offset for `" #member "` is not " #offset)
775 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */
776 #ifdef CONFIG_EFI_STUB
777 #define ll_boot_init() false
779 #define ll_boot_init() true
782 /* Pull in stuff for the build system */
784 # include <environment.h>
787 #endif /* __COMMON_H_ */