1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * (C) Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
10 #ifndef __ASSEMBLY__ /* put C only stuff in this section */
12 typedef unsigned char uchar;
13 typedef volatile unsigned long vu_long;
14 typedef volatile unsigned short vu_short;
15 typedef volatile unsigned char vu_char;
17 /* Allow sharing constants with type modifiers between C and assembly. */
18 #define _AC(X, Y) (X##Y)
23 #include <asm-offsets.h>
24 #include <linux/bitops.h>
25 #include <linux/bug.h>
26 #include <linux/delay.h>
27 #include <linux/types.h>
28 #include <linux/printk.h>
29 #include <linux/string.h>
30 #include <linux/stringify.h>
31 #include <asm/ptrace.h>
34 #include <linux/kernel.h>
41 #define CONFIG_SYS_SUPPORT_64BIT_DATA
46 typedef void (interrupt_handler_t)(void *);
48 #include <asm/u-boot.h> /* boot information for Linux kernel */
49 #include <asm/global_data.h> /* global data used for startup functions */
51 #if defined(CONFIG_ENV_IS_EMBEDDED)
52 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
53 #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
54 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
55 defined(CONFIG_ENV_IS_IN_NVRAM)
56 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
58 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
61 /* startup functions, used in:
63 * common/init/board_init.c
72 void hang (void) __attribute__ ((noreturn));
76 #include <display_options.h>
79 void main_loop (void);
80 int run_command(const char *cmd, int flag);
81 int run_command_repeatable(const char *cmd, int flag);
84 * Run a list of commands separated by ; or even \0
86 * Note that if 'len' is not -1, then the command does not need to be nul
87 * terminated, Memory will be allocated for the command in that case.
89 * @param cmd List of commands to run, each separated bu semicolon
90 * @param len Length of commands excluding terminator if known (-1 if not)
91 * @param flag Execution flags (CMD_FLAG_...)
92 * @return 0 on success, or != 0 on error.
94 int run_command_list(const char *cmd, int len, int flag);
98 extern u8 __dtb_dt_begin[]; /* embedded device tree blob */
99 extern u8 __dtb_dt_spl_begin[]; /* embedded device tree blob for SPL/TPL */
103 * Show the DRAM size in a board-specific way
105 * This is used by boards to display DRAM information in their own way.
107 * @param size Size of DRAM (which should be displayed along with other info)
109 void board_show_dram(phys_size_t size);
112 * arch_fixup_fdt() - Write arch-specific information to fdt
114 * Defined in arch/$(ARCH)/lib/bootm-fdt.c
116 * @blob: FDT blob to write to
117 * @return 0 if ok, or -ve FDT_ERR_... on failure
119 int arch_fixup_fdt(void *blob);
122 void flash_perror (int);
124 /* common/cmd_source.c */
125 int source (ulong addr, const char *fit_uname);
127 extern ulong load_addr; /* Default Load Address */
128 extern ulong save_addr; /* Default Save Address */
129 extern ulong save_size; /* Default Save Size */
131 /* common/cmd_net.c */
132 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
134 /* common/cmd_fat.c */
135 int do_fat_fsload(cmd_tbl_t *, int, int, char * const []);
137 /* common/cmd_ext2.c */
138 int do_ext2load(cmd_tbl_t *, int, int, char * const []);
140 /* common/cmd_nvedit.c */
142 void env_relocate (void);
143 int envmatch (uchar *, int);
146 * env_get() - Look up the value of an environment variable
148 * In U-Boot proper this can be called before relocation (which is when the
149 * environment is loaded from storage, i.e. GD_FLG_ENV_READY is 0). In that
150 * case this function calls env_get_f().
152 * @varname: Variable to look up
153 * @return value of variable, or NULL if not found
155 char *env_get(const char *varname);
158 * env_get_f() - Look up the value of an environment variable (early)
160 * This function is called from env_get() if the environment has not been
161 * loaded yet (GD_FLG_ENV_READY flag is 0). Some environment locations will
162 * support reading the value (slowly) and some will not.
164 * @varname: Variable to look up
165 * @return value of variable, or NULL if not found
167 int env_get_f(const char *name, char *buf, unsigned len);
170 * env_get_ulong() - Return an environment variable as an integer value
172 * Most U-Boot environment variables store hex values. For those which store
173 * (e.g.) base-10 integers, this function can be used to read the value.
175 * @name: Variable to look up
176 * @base: Base to use (e.g. 10 for base 10, 2 for binary)
177 * @default_val: Default value to return if no value is found
178 * @return the value found, or @default_val if none
180 ulong env_get_ulong(const char *name, int base, ulong default_val);
183 * env_get_hex() - Return an environment variable as a hex value
185 * Decode an environment as a hex number (it may or may not have a 0x
186 * prefix). If the environment variable cannot be found, or does not start
187 * with hex digits, the default value is returned.
189 * @varname: Variable to decode
190 * @default_val: Value to return on error
192 ulong env_get_hex(const char *varname, ulong default_val);
195 * Read an environment variable as a boolean
196 * Return -1 if variable does not exist (default to true)
198 int env_get_yesno(const char *var);
201 * env_set() - set an environment variable
203 * This sets or deletes the value of an environment variable. For setting the
204 * value the variable is created if it does not already exist.
206 * @varname: Variable to adjust
207 * @value: Value to set for the variable, or NULL or "" to delete the variable
208 * @return 0 if OK, 1 on error
210 int env_set(const char *varname, const char *value);
213 * env_set_ulong() - set an environment variable to an integer
215 * @varname: Variable to adjust
216 * @value: Value to set for the variable (will be converted to a string)
217 * @return 0 if OK, 1 on error
219 int env_set_ulong(const char *varname, ulong value);
222 * env_set_hex() - set an environment variable to a hex value
224 * @varname: Variable to adjust
225 * @value: Value to set for the variable (will be converted to a hex string)
226 * @return 0 if OK, 1 on error
228 int env_set_hex(const char *varname, ulong value);
231 * env_set_addr - Set an environment variable to an address in hex
233 * @varname: Environment variable to set
234 * @addr: Value to set it to
235 * @return 0 if ok, 1 on error
237 static inline int env_set_addr(const char *varname, const void *addr)
239 return env_set_hex(varname, (ulong)addr);
242 #ifdef CONFIG_AUTO_COMPLETE
243 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
245 int get_env_id (void);
247 void pci_init_board(void);
249 /* common/exports.c */
250 void jumptable_init(void);
252 /* common/kallsysm.c */
253 const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
255 /* common/memsize.c */
256 long get_ram_size (long *, long);
257 phys_size_t get_effective_memsize(void);
259 /* $(BOARD)/$(BOARD).c */
260 void reset_phy (void);
261 void fdc_hw_init (void);
263 /* $(BOARD)/eeprom.c */
264 #ifdef CONFIG_CMD_EEPROM
265 void eeprom_init (int bus);
266 int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
267 int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
270 * Some EEPROM code is depecated because it used the legacy I2C interface. Add
271 * some macros here so we don't have to touch every one of those uses
273 #define eeprom_init(bus)
274 #define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
275 #define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
278 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C) && defined(CONFIG_SYS_I2C_EEPROM_ADDR)
279 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR
282 #if defined(CONFIG_MPC8XX_SPI)
283 extern void spi_init_f (void);
284 extern void spi_init_r (void);
285 extern ssize_t spi_read (uchar *, int, uchar *, int);
286 extern ssize_t spi_write (uchar *, int, uchar *, int);
289 /* $(BOARD)/$(BOARD).c */
290 int board_early_init_f (void);
291 int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */
292 int board_late_init (void);
293 int board_postclk_init (void); /* after clocks/timebase, before env/serial */
294 int board_early_init_r (void);
296 #if defined(CONFIG_SYS_DRAM_TEST)
298 #endif /* CONFIG_SYS_DRAM_TEST */
301 int icache_status (void);
302 void icache_enable (void);
303 void icache_disable(void);
304 int dcache_status (void);
305 void dcache_enable (void);
306 void dcache_disable(void);
307 void mmu_disable(void);
308 #if defined(CONFIG_ARM)
309 void relocate_code(ulong);
311 void relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn));
313 ulong get_endaddr (void);
314 void trap_init (ulong);
317 static inline int cpumask_next(int cpu, unsigned int mask)
319 for (cpu++; !((1 << cpu) & mask); cpu++)
325 #define for_each_cpu(iter, cpu, num_cpus, mask) \
326 for (iter = 0, cpu = cpumask_next(-1, mask); \
328 iter++, cpu = cpumask_next(cpu, mask)) \
330 int cpu_numcores (void);
331 int cpu_num_dspcores(void);
333 u32 cpu_dsp_mask(void);
334 int is_core_valid (unsigned int);
339 int checkicache (void);
340 int checkdcache (void);
341 void upmconfig (unsigned int, unsigned int *, unsigned int);
342 ulong get_tbclk (void);
343 void reset_misc (void);
344 void reset_cpu (ulong addr);
345 void ft_cpu_setup(void *blob, bd_t *bd);
346 void ft_pci_setup(void *blob, bd_t *bd);
348 void smp_set_core_boot_addr(unsigned long addr, int corenr);
349 void smp_kick_all_cpus(void);
351 /* $(CPU)/serial.c */
352 int serial_init (void);
353 void serial_setbrg (void);
354 void serial_putc (const char);
355 void serial_putc_raw(const char);
356 void serial_puts (const char *);
357 int serial_getc (void);
358 int serial_tstc (void);
359 int serial_setconfig(uint config);
362 int get_clocks (void);
363 ulong get_bus_freq (ulong);
364 int get_serial_clock(void);
366 /* $(CPU)/interrupts.c */
367 int interrupt_init (void);
368 void timer_interrupt (struct pt_regs *);
369 void external_interrupt (struct pt_regs *);
370 void irq_install_handler(int, interrupt_handler_t *, void *);
371 void irq_free_handler (int);
372 void reset_timer (void);
374 /* Return value of monotonic microsecond timer */
375 unsigned long timer_get_us(void);
377 void enable_interrupts (void);
378 int disable_interrupts (void);
380 /* $(CPU)/.../commproc.c */
381 int dpram_init (void);
382 uint dpram_base(void);
383 uint dpram_base_align(uint align);
384 uint dpram_alloc(uint size);
385 uint dpram_alloc_align(uint size,uint align);
386 void bootcount_store (ulong);
387 ulong bootcount_load (void);
388 #define BOOTCOUNT_MAGIC 0xB001C041
390 /* $(CPU)/.../<eth> */
391 void mii_init (void);
393 /* $(CPU)/.../lcd.c */
394 ulong lcd_setmem (ulong);
396 /* $(CPU)/.../video.c */
397 ulong video_setmem (ulong);
399 /* arch/$(ARCH)/lib/cache.c */
400 void enable_caches(void);
401 void flush_cache (unsigned long, unsigned long);
402 void flush_dcache_all(void);
403 void flush_dcache_range(unsigned long start, unsigned long stop);
404 void invalidate_dcache_range(unsigned long start, unsigned long stop);
405 void invalidate_dcache_all(void);
406 void invalidate_icache_all(void);
409 /* Disable caches (else flush caches but leave them active) */
410 CBL_DISABLE_CACHES = 1 << 0,
411 CBL_SHOW_BOOTSTAGE_REPORT = 1 << 1,
417 * Clean up ready for linux
419 * @param flags Flags to control what is done
421 int cleanup_before_linux_select(int flags);
423 /* arch/$(ARCH)/lib/ticks.S */
424 uint64_t get_ticks(void);
425 void wait_ticks (unsigned long);
427 /* arch/$(ARCH)/lib/time.c */
428 ulong usec2ticks (unsigned long usec);
429 ulong ticks2usec (unsigned long ticks);
432 int gzip_parse_header(const unsigned char *src, unsigned long len);
433 int gunzip(void *, int, unsigned char *, unsigned long *);
434 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
435 int stoponerr, int offset);
438 * gzwrite progress indicators: defined weak to allow board-specific
441 * gzwrite_progress_init called on startup
442 * gzwrite_progress called during decompress/write loop
443 * gzwrite_progress_finish called at end of loop to
444 * indicate success (retcode=0) or failure
446 void gzwrite_progress_init(u64 expected_size);
448 void gzwrite_progress(int iteration,
452 void gzwrite_progress_finish(int retcode,
459 * decompress and write gzipped image from memory to block device
461 * @param src compressed image address
462 * @param len compressed image length in bytes
463 * @param dev block device descriptor
464 * @param szwritebuf bytes per write (pad to erase size)
465 * @param startoffs offset in bytes of first write
466 * @param szexpected expected uncompressed length
467 * may be zero to use gzip trailer
468 * for files under 4GiB
470 int gzwrite(unsigned char *src, int len,
471 struct blk_desc *dev,
472 unsigned long szwritebuf,
476 /* lib/lz4_wrapper.c */
477 int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn);
480 void qsort(void *base, size_t nmemb, size_t size,
481 int(*compar)(const void *, const void *));
482 int strcmp_compar(const void *, const void *);
488 #include <vsprintf.h>
491 char * strmhz(char *buf, unsigned long hz);
494 #include <u-boot/crc.h>
498 void srand(unsigned int seed);
499 unsigned int rand(void);
500 unsigned int rand_r(unsigned int *seedp);
503 * STDIO based functions (can always be used)
506 int serial_printf (const char *fmt, ...)
507 __attribute__ ((format (__printf__, 1, 2)));
510 int gzip(void *dst, unsigned long *lenp,
511 unsigned char *src, unsigned long srclen);
512 int zzip(void *dst, unsigned long *lenp, unsigned char *src,
513 unsigned long srclen, int stoponerr,
514 int (*func)(unsigned long, unsigned long));
516 /* lib/net_utils.c */
518 static inline struct in_addr env_get_ip(char *var)
520 return string_to_ip(env_get(var));
523 int pcmcia_init (void);
525 #ifdef CONFIG_LED_STATUS
526 # include <status_led.h>
529 #include <bootstage.h>
531 #ifdef CONFIG_SHOW_ACTIVITY
532 void show_activity(int arg);
535 /* Multicore arch functions */
537 int cpu_status(u32 nr);
538 int cpu_reset(u32 nr);
539 int cpu_disable(u32 nr);
540 int cpu_release(u32 nr, int argc, char * const argv[]);
543 #else /* __ASSEMBLY__ */
545 /* Drop a C type modifier (like in 3UL) for constants used in assembly. */
548 #endif /* __ASSEMBLY__ */
550 /* Put only stuff here that the assembler can digest */
552 /* Declare an unsigned long constant digestable both by C and an assembler. */
553 #define UL(x) _AC(x, UL)
556 #define CONFIG_HAS_POST
557 #ifndef CONFIG_POST_ALT_LIST
558 #define CONFIG_POST_STD_LIST
562 #ifdef CONFIG_INIT_CRITICAL
563 #error CONFIG_INIT_CRITICAL is deprecated!
564 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README.
567 #define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1))
570 * check_member() - Check the offset of a structure member
572 * @structure: Name of structure (e.g. global_data)
573 * @member: Name of member (e.g. baudrate)
574 * @offset: Expected offset in bytes
576 #define check_member(structure, member, offset) _Static_assert( \
577 offsetof(struct structure, member) == offset, \
578 "`struct " #structure "` offset for `" #member "` is not " #offset)
580 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */
581 #ifdef CONFIG_EFI_STUB
582 #define ll_boot_init() false
584 #define ll_boot_init() true
587 /* Pull in stuff for the build system */
589 # include <environment.h>
592 #endif /* __COMMON_H_ */