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/* SPDX-License-Identifier: GPL-2.0+ */
* (C) Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering,
#ifndef __COMMON_H_
#define __COMMON_H_ 1
#ifndef __ASSEMBLY__ /* put C only stuff in this section */
typedef unsigned char uchar;
typedef volatile unsigned long vu_long;
typedef volatile unsigned short vu_short;
typedef volatile unsigned char vu_char;
/* Allow sharing constants with type modifiers between C and assembly. */
#define _AC(X, Y) (X##Y)
#include <config.h>
#include <errno.h>
#include <time.h>
#include <asm-offsets.h>
#include <linux/bitops.h>
#include <linux/bug.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/printk.h>
#include <linux/string.h>
#include <linux/stringify.h>
#include <asm/ptrace.h>
#include <stdarg.h>
#include <stdio.h>
#include <linux/kernel.h>
#include <part.h>
#include <flash.h>
#include <image.h>
/* Bring in printf format macros if inttypes.h is included */
#ifdef __LP64__
#include <log.h>
typedef void (interrupt_handler_t)(void *);
#include <asm/u-boot.h> /* boot information for Linux kernel */
#include <asm/global_data.h> /* global data used for startup functions */
/* startup functions, used in:
* common/board_f.c
* common/init/board_init.c
* common/board_r.c
* common/board_info.c
#include <init.h>
* Function Prototypes
void hang (void) __attribute__ ((noreturn));
int cpu_init(void);
#include <display_options.h>
/* common/main.c */
void main_loop (void);
int run_command(const char *cmd, int flag);
int run_command_repeatable(const char *cmd, int flag);
* Run a list of commands separated by ; or even \0
* Note that if 'len' is not -1, then the command does not need to be nul
* terminated, Memory will be allocated for the command in that case.
* @param cmd List of commands to run, each separated bu semicolon
* @param len Length of commands excluding terminator if known (-1 if not)
* @param flag Execution flags (CMD_FLAG_...)
* @return 0 on success, or != 0 on error.
int run_command_list(const char *cmd, int len, int flag);
int checkflash(void);
int checkdram(void);
extern u8 __dtb_dt_begin[]; /* embedded device tree blob */
extern u8 __dtb_dt_spl_begin[]; /* embedded device tree blob for SPL/TPL */
int mdm_init(void);
* Show the DRAM size in a board-specific way
* This is used by boards to display DRAM information in their own way.
* @param size Size of DRAM (which should be displayed along with other info)
void board_show_dram(phys_size_t size);
* arch_fixup_fdt() - Write arch-specific information to fdt
* Defined in arch/$(ARCH)/lib/bootm-fdt.c
* @blob: FDT blob to write to
* @return 0 if ok, or -ve FDT_ERR_... on failure
int arch_fixup_fdt(void *blob);
/* common/flash.c */
void flash_perror (int);
/* common/cmd_source.c */
int source (ulong addr, const char *fit_uname);
extern ulong load_addr; /* Default Load Address */
extern ulong save_addr; /* Default Save Address */
extern ulong save_size; /* Default Save Size */
/* common/cmd_net.c */
int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
/* common/cmd_fat.c */
int do_fat_fsload(cmd_tbl_t *, int, int, char * const []);
/* common/cmd_ext2.c */
int do_ext2load(cmd_tbl_t *, int, int, char * const []);
/* common/cmd_nvedit.c */
int env_init (void);
void env_relocate (void);
int envmatch (uchar *, int);
* env_get() - Look up the value of an environment variable
* In U-Boot proper this can be called before relocation (which is when the
* environment is loaded from storage, i.e. GD_FLG_ENV_READY is 0). In that
* case this function calls env_get_f().
* @varname: Variable to look up
* @return value of variable, or NULL if not found
char *env_get(const char *varname);
* env_get_f() - Look up the value of an environment variable (early)
* This function is called from env_get() if the environment has not been
* loaded yet (GD_FLG_ENV_READY flag is 0). Some environment locations will
* support reading the value (slowly) and some will not.
* @varname: Variable to look up
* @return value of variable, or NULL if not found
int env_get_f(const char *name, char *buf, unsigned len);
* env_get_ulong() - Return an environment variable as an integer value
* Most U-Boot environment variables store hex values. For those which store
* (e.g.) base-10 integers, this function can be used to read the value.
* @name: Variable to look up
* @base: Base to use (e.g. 10 for base 10, 2 for binary)
* @default_val: Default value to return if no value is found
* @return the value found, or @default_val if none
ulong env_get_ulong(const char *name, int base, ulong default_val);
* env_get_hex() - Return an environment variable as a hex value
* Decode an environment as a hex number (it may or may not have a 0x
* prefix). If the environment variable cannot be found, or does not start
* with hex digits, the default value is returned.
* @varname: Variable to decode
* @default_val: Value to return on error
ulong env_get_hex(const char *varname, ulong default_val);
* Read an environment variable as a boolean
* Return -1 if variable does not exist (default to true)
int env_get_yesno(const char *var);
* env_set() - set an environment variable
* This sets or deletes the value of an environment variable. For setting the
* value the variable is created if it does not already exist.
* @varname: Variable to adjust
* @value: Value to set for the variable, or NULL or "" to delete the variable
* @return 0 if OK, 1 on error
int env_set(const char *varname, const char *value);
* env_set_ulong() - set an environment variable to an integer
* @varname: Variable to adjust
* @value: Value to set for the variable (will be converted to a string)
* @return 0 if OK, 1 on error
int env_set_ulong(const char *varname, ulong value);
* env_set_hex() - set an environment variable to a hex value
* @varname: Variable to adjust
* @value: Value to set for the variable (will be converted to a hex string)
* @return 0 if OK, 1 on error
int env_set_hex(const char *varname, ulong value);
* env_set_addr - Set an environment variable to an address in hex
* @varname: Environment variable to set
* @addr: Value to set it to
* @return 0 if ok, 1 on error
static inline int env_set_addr(const char *varname, const void *addr)
return env_set_hex(varname, (ulong)addr);
int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
int get_env_id (void);
void pci_init_board(void);
/* common/exports.c */
void jumptable_init(void);
/* common/kallsysm.c */
const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
/* common/memsize.c */
long get_ram_size (long *, long);
phys_size_t get_effective_memsize(void);
/* $(BOARD)/$(BOARD).c */
void reset_phy (void);
void fdc_hw_init (void);
/* $(BOARD)/eeprom.c */
void eeprom_init (int bus);
int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
* Some EEPROM code is depecated because it used the legacy I2C interface. Add
* some macros here so we don't have to touch every one of those uses
#define eeprom_init(bus)
#define eeprom_read(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
#define eeprom_write(dev_addr, offset, buffer, cnt) ((void)-ENOSYS)
#if defined(CONFIG_MPC8XX_SPI)
extern void spi_init_f (void);
extern void spi_init_r (void);
extern ssize_t spi_read (uchar *, int, uchar *, int);
extern ssize_t spi_write (uchar *, int, uchar *, int);
/* $(BOARD)/$(BOARD).c */
int board_early_init_f (void);
int board_fix_fdt (void *rw_fdt_blob); /* manipulate the U-Boot fdt before its relocation */
int board_late_init (void);
int board_postclk_init (void); /* after clocks/timebase, before env/serial */
int board_early_init_r (void);
int testdram(void);
/* $(CPU)/start.S */
int icache_status (void);
void icache_enable (void);
void icache_disable(void);
int dcache_status (void);
void dcache_enable (void);
void dcache_disable(void);
void mmu_disable(void);
#if defined(CONFIG_ARM)
void relocate_code(ulong);
void relocate_code(ulong, gd_t *, ulong) __attribute__ ((noreturn));
ulong get_endaddr (void);
void trap_init (ulong);
/* $(CPU)/cpu.c */
static inline int cpumask_next(int cpu, unsigned int mask)
for (cpu++; !((1 << cpu) & mask); cpu++)
return cpu;
#define for_each_cpu(iter, cpu, num_cpus, mask) \
for (iter = 0, cpu = cpumask_next(-1, mask); \
iter < num_cpus; \
iter++, cpu = cpumask_next(cpu, mask)) \
int cpu_numcores (void);
int cpu_num_dspcores(void);
u32 cpu_mask (void);
u32 cpu_dsp_mask(void);
int is_core_valid (unsigned int);
void s_init(void);
int checkcpu (void);
int checkicache (void);
int checkdcache (void);
void upmconfig (unsigned int, unsigned int *, unsigned int);
ulong get_tbclk (void);
void reset_misc (void);
void reset_cpu (ulong addr);
void ft_cpu_setup(void *blob, bd_t *bd);
void ft_pci_setup(void *blob, bd_t *bd);
void smp_set_core_boot_addr(unsigned long addr, int corenr);
void smp_kick_all_cpus(void);
/* $(CPU)/serial.c */
int serial_init (void);
void serial_setbrg (void);
void serial_putc (const char);
void serial_putc_raw(const char);
void serial_puts (const char *);
int serial_getc (void);
int serial_tstc (void);
/* $(CPU)/speed.c */
int get_clocks (void);
ulong get_bus_freq (ulong);
int get_serial_clock(void);
/* $(CPU)/interrupts.c */
int interrupt_init (void);
void timer_interrupt (struct pt_regs *);
void external_interrupt (struct pt_regs *);
void irq_install_handler(int, interrupt_handler_t *, void *);
void irq_free_handler (int);
void reset_timer (void);
/* Return value of monotonic microsecond timer */
unsigned long timer_get_us(void);
void enable_interrupts (void);
int disable_interrupts (void);
/* $(CPU)/.../commproc.c */
int dpram_init (void);
uint dpram_base(void);
uint dpram_base_align(uint align);
uint dpram_alloc(uint size);
uint dpram_alloc_align(uint size,uint align);
void bootcount_store (ulong);
ulong bootcount_load (void);
#define BOOTCOUNT_MAGIC 0xB001C041
/* $(CPU)/.../<eth> */
void mii_init (void);
/* $(CPU)/.../lcd.c */
ulong lcd_setmem (ulong);
/* $(CPU)/.../video.c */
ulong video_setmem (ulong);
/* arch/$(ARCH)/lib/cache.c */
void enable_caches(void);
void flush_cache (unsigned long, unsigned long);
void flush_dcache_all(void);
void flush_dcache_range(unsigned long start, unsigned long stop);
void invalidate_dcache_range(unsigned long start, unsigned long stop);
void invalidate_dcache_all(void);
void invalidate_icache_all(void);
enum {
/* Disable caches (else flush caches but leave them active) */
CBL_ALL = 3,
* Clean up ready for linux
* @param flags Flags to control what is done
int cleanup_before_linux_select(int flags);
/* arch/$(ARCH)/lib/ticks.S */
uint64_t get_ticks(void);
void wait_ticks (unsigned long);
/* arch/$(ARCH)/lib/time.c */
ulong usec2ticks (unsigned long usec);
ulong ticks2usec (unsigned long ticks);
/* lib/gunzip.c */
int gzip_parse_header(const unsigned char *src, unsigned long len);
int gunzip(void *, int, unsigned char *, unsigned long *);
int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
int stoponerr, int offset);
* gzwrite progress indicators: defined weak to allow board-specific
* overrides:
* gzwrite_progress_init called on startup
* gzwrite_progress called during decompress/write loop
* gzwrite_progress_finish called at end of loop to
* indicate success (retcode=0) or failure
void gzwrite_progress_init(u64 expected_size);
void gzwrite_progress(int iteration,
u64 bytes_written,
u64 total_bytes);
void gzwrite_progress_finish(int retcode,
u64 totalwritten,
u64 totalsize,
u32 expected_crc,
u32 calculated_crc);
* decompress and write gzipped image from memory to block device
* @param src compressed image address
* @param len compressed image length in bytes
* @param dev block device descriptor
* @param szwritebuf bytes per write (pad to erase size)
* @param startoffs offset in bytes of first write
* @param szexpected expected uncompressed length
* may be zero to use gzip trailer
* for files under 4GiB
int gzwrite(unsigned char *src, int len,
struct blk_desc *dev,
unsigned long szwritebuf,
u64 startoffs,
u64 szexpected);
/* lib/lz4_wrapper.c */
int ulz4fn(const void *src, size_t srcn, void *dst, size_t *dstn);
/* lib/qsort.c */
void qsort(void *base, size_t nmemb, size_t size,
int(*compar)(const void *, const void *));
int strcmp_compar(const void *, const void *);
/* lib/uuid.c */
#include <uuid.h>
/* lib/vsprintf.c */
#include <vsprintf.h>
/* lib/strmhz.c */
char * strmhz(char *buf, unsigned long hz);
/* lib/crc32.c */
#include <u-boot/crc.h>
/* lib/rand.c */
#define RAND_MAX -1U
void srand(unsigned int seed);
unsigned int rand(void);
unsigned int rand_r(unsigned int *seedp);
* STDIO based functions (can always be used)
/* serial stuff */
int serial_printf (const char *fmt, ...)
__attribute__ ((format (__printf__, 1, 2)));
/* lib/gzip.c */
int gzip(void *dst, unsigned long *lenp,
unsigned char *src, unsigned long srclen);
int zzip(void *dst, unsigned long *lenp, unsigned char *src,
unsigned long srclen, int stoponerr,
int (*func)(unsigned long, unsigned long));
/* lib/net_utils.c */
#include <net.h>
static inline struct in_addr env_get_ip(char *var)
return string_to_ip(env_get(var));
int pcmcia_init (void);
# include <status_led.h>
#include <bootstage.h>
void show_activity(int arg);
/* Multicore arch functions */
#ifdef CONFIG_MP
int cpu_status(int nr);
int cpu_reset(int nr);
int cpu_disable(int nr);
int cpu_release(int nr, int argc, char * const argv[]);
#else /* __ASSEMBLY__ */
/* Drop a C type modifier (like in 3UL) for constants used in assembly. */
#define _AC(X, Y) X
#endif /* __ASSEMBLY__ */
/* Put only stuff here that the assembler can digest */
/* Declare an unsigned long constant digestable both by C and an assembler. */
#define UL(x) _AC(x, UL)
#error CONFIG_INIT_CRITICAL is deprecated!
#define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1))
* check_member() - Check the offset of a structure member
* @structure: Name of structure (e.g. global_data)
* @member: Name of member (e.g. baudrate)
* @offset: Expected offset in bytes
#define check_member(structure, member, offset) _Static_assert( \
offsetof(struct structure, member) == offset, \
"`struct " #structure "` offset for `" #member "` is not " #offset)
/* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */
#define ll_boot_init() false
#define ll_boot_init() true
/* Pull in stuff for the build system */
# include <environment.h>
#endif /* __COMMON_H_ */