2 * (C) Copyright 2000-2009
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #undef _LINUX_CONFIG_H
28 #define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
30 #ifndef __ASSEMBLY__ /* put C only stuff in this section */
32 typedef unsigned char uchar;
33 typedef volatile unsigned long vu_long;
34 typedef volatile unsigned short vu_short;
35 typedef volatile unsigned char vu_char;
38 #include <asm-offsets.h>
39 #include <linux/bitops.h>
40 #include <linux/types.h>
41 #include <linux/string.h>
42 #include <asm/ptrace.h>
44 #if defined(CONFIG_PCI) && (defined(CONFIG_4xx) && !defined(CONFIG_AP1000))
47 #if defined(CONFIG_8xx)
48 #include <asm/8xx_immap.h>
49 #if defined(CONFIG_MPC852) || defined(CONFIG_MPC852T) || \
50 defined(CONFIG_MPC859) || defined(CONFIG_MPC859T) || \
51 defined(CONFIG_MPC859DSL) || \
52 defined(CONFIG_MPC866) || defined(CONFIG_MPC866T) || \
53 defined(CONFIG_MPC866P)
54 # define CONFIG_MPC866_FAMILY 1
55 #elif defined(CONFIG_MPC870) \
56 || defined(CONFIG_MPC875) \
57 || defined(CONFIG_MPC880) \
58 || defined(CONFIG_MPC885)
59 # define CONFIG_MPC885_FAMILY 1
61 #if defined(CONFIG_MPC860) \
62 || defined(CONFIG_MPC860T) \
63 || defined(CONFIG_MPC866_FAMILY) \
64 || defined(CONFIG_MPC885_FAMILY)
65 # define CONFIG_MPC86x 1
67 #elif defined(CONFIG_5xx)
68 #include <asm/5xx_immap.h>
69 #elif defined(CONFIG_MPC5xxx)
71 #elif defined(CONFIG_MPC512X)
72 #include <asm/immap_512x.h>
73 #elif defined(CONFIG_MPC8220)
74 #include <asm/immap_8220.h>
75 #elif defined(CONFIG_8260)
76 #if defined(CONFIG_MPC8247) \
77 || defined(CONFIG_MPC8248) \
78 || defined(CONFIG_MPC8271) \
79 || defined(CONFIG_MPC8272)
80 #define CONFIG_MPC8272_FAMILY 1
82 #if defined(CONFIG_MPC8272_FAMILY)
83 #define CONFIG_MPC8260 1
85 #include <asm/immap_8260.h>
89 #include <asm/immap_86xx.h>
93 #include <asm/immap_85xx.h>
97 #include <asm/immap_83xx.h>
100 #include <asm/ppc4xx.h>
103 #include <board/hymod/hymod.h>
106 #define asmlinkage /* nothing */
108 #ifdef CONFIG_BLACKFIN
109 #include <asm/blackfin.h>
111 #ifdef CONFIG_SOC_DA8XX
112 #include <asm/arch/hardware.h>
120 #define debug(fmt,args...) printf (fmt ,##args)
121 #define debugX(level,fmt,args...) if (DEBUG>=level) printf(fmt,##args);
123 #define debug(fmt,args...)
124 #define debugX(level,fmt,args...)
127 #ifdef PERFORMANCE_TEST
128 #define performance_debug(fmt,args...) do { \
129 printf(fmt "++%lu \n", \
130 ##args, SCI_GetTickCount()); \
133 #define performance_debug(fmt,args...)
137 #define error(fmt, args...) do { \
138 printf("ERROR: " fmt "\nat %s:%d/%s()\n", \
139 ##args, __FILE__, __LINE__, __func__); \
144 printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
147 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
150 typedef void (interrupt_handler_t)(void *);
152 #include <asm/u-boot.h> /* boot information for Linux kernel */
153 #include <asm/global_data.h> /* global data used for startup functions */
156 * enable common handling for all TQM8xxL/M boards:
157 * - CONFIG_TQM8xxM will be defined for all TQM8xxM boards
158 * - CONFIG_TQM8xxL will be defined for all TQM8xxL _and_ TQM8xxM boards
159 * and for the TQM885D board
161 #if defined(CONFIG_TQM823M) || defined(CONFIG_TQM850M) || \
162 defined(CONFIG_TQM855M) || defined(CONFIG_TQM860M) || \
163 defined(CONFIG_TQM862M) || defined(CONFIG_TQM866M)
164 # ifndef CONFIG_TQM8xxM
165 # define CONFIG_TQM8xxM
168 #if defined(CONFIG_TQM823L) || defined(CONFIG_TQM850L) || \
169 defined(CONFIG_TQM855L) || defined(CONFIG_TQM860L) || \
170 defined(CONFIG_TQM862L) || defined(CONFIG_TQM8xxM) || \
171 defined(CONFIG_TQM885D)
172 # ifndef CONFIG_TQM8xxL
173 # define CONFIG_TQM8xxL
177 #ifndef CONFIG_SERIAL_MULTI
179 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2) \
180 || defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
181 || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
183 #define CONFIG_SERIAL_MULTI 1
187 #endif /* CONFIG_SERIAL_MULTI */
190 * General Purpose Utilities
193 ({ typeof (X) __x = (X), __y = (Y); \
194 (__x < __y) ? __x : __y; })
197 ({ typeof (X) __x = (X), __y = (Y); \
198 (__x > __y) ? __x : __y; })
200 #define MIN(x, y) min(x, y)
201 #define MAX(x, y) max(x, y)
203 #if defined(CONFIG_ENV_IS_EMBEDDED)
204 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
205 #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
206 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
207 defined(CONFIG_ENV_IS_IN_NVRAM)
208 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
210 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
214 * container_of - cast a member of a structure out to the containing structure
215 * @ptr: the pointer to the member.
216 * @type: the type of the container struct this is embedded in.
217 * @member: the name of the member within the struct.
220 #define container_of(ptr, type, member) ({ \
221 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
222 (type *)( (char *)__mptr - offsetof(type,member) );})
225 * Function Prototypes
228 void hang (void) __attribute__ ((noreturn));
231 phys_size_t initdram (int);
232 int display_options (void);
233 void print_size(unsigned long long, const char *);
234 int print_buffer (ulong addr, void* data, uint width, uint count, uint linelen);
237 void main_loop (void);
238 int run_command (const char *cmd, int flag);
239 int readline (const char *const prompt);
240 int readline_into_buffer (const char *const prompt, char * buffer);
241 int parse_line (char *, char *[]);
242 void init_cmd_timeout(void);
243 void reset_cmd_timeout(void);
245 /* arch/$(ARCH)/lib/board.c */
246 void board_init_f (ulong) __attribute__ ((noreturn));
247 void board_init_r (gd_t *, ulong) __attribute__ ((noreturn));
248 int checkboard (void);
249 int checkflash (void);
250 int checkdram (void);
251 int last_stage_init(void);
252 extern ulong monitor_flash_len;
253 int mac_read_from_eeprom(void);
256 void flash_perror (int);
258 /* common/cmd_source.c */
259 int source (ulong addr, const char *fit_uname);
261 extern ulong load_addr; /* Default Load Address */
263 /* common/cmd_doc.c */
264 void doc_probe(unsigned long physadr);
266 /* common/cmd_nvedit.c */
268 void env_relocate (void);
269 int envmatch (uchar *, int);
270 char *getenv (char *);
271 int getenv_f (char *name, char *buf, unsigned len);
273 #ifdef CONFIG_PPC /* ARM version to be fixed! */
274 int inline setenv (char *, char *);
276 int setenv (char *, char *);
277 #endif /* CONFIG_PPC */
279 # include <asm/mach-types.h>
280 # include <asm/setup.h>
281 # include <asm/u-boot-arm.h> /* ARM version to be fixed! */
282 #endif /* CONFIG_ARM */
283 #ifdef CONFIG_I386 /* x86 version to be fixed! */
284 # include <asm/u-boot-i386.h>
285 #endif /* CONFIG_I386 */
287 #ifdef CONFIG_AUTO_COMPLETE
288 int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
290 int get_env_id (void);
292 void pci_init (void);
293 void pci_init_board(void);
294 void pciinfo (int, int);
296 #if defined(CONFIG_PCI) && (defined(CONFIG_4xx) && !defined(CONFIG_AP1000))
297 int pci_pre_init (struct pci_controller *);
298 int is_pci_host (struct pci_controller *);
301 #if defined(CONFIG_PCI) && (defined(CONFIG_440) || defined(CONFIG_405EX))
302 # if defined(CONFIG_SYS_PCI_TARGET_INIT)
303 void pci_target_init (struct pci_controller *);
305 # if defined(CONFIG_SYS_PCI_MASTER_INIT)
306 void pci_master_init (struct pci_controller *);
308 #if defined(CONFIG_440SPE) || \
309 defined(CONFIG_460EX) || defined(CONFIG_460GT) || \
310 defined(CONFIG_405EX)
311 void pcie_setup_hoses(int busno);
315 int misc_init_f (void);
316 int misc_init_r (void);
318 /* common/exports.c */
319 void jumptable_init(void);
321 /* common/kallsysm.c */
322 const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
325 void api_init (void);
327 /* common/memsize.c */
328 long get_ram_size (volatile long *, long);
330 /* $(BOARD)/$(BOARD).c */
331 void reset_phy (void);
332 void fdc_hw_init (void);
334 /* $(BOARD)/eeprom.c */
335 void eeprom_init (void);
337 int eeprom_probe (unsigned dev_addr, unsigned offset);
339 int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
340 int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
342 extern uchar pic_read (uchar reg);
343 extern void pic_write (uchar reg, uchar val);
347 * Set this up regardless of board
348 * type, to prevent errors.
350 #if defined(CONFIG_SPI) || !defined(CONFIG_SYS_I2C_EEPROM_ADDR)
351 # define CONFIG_SYS_DEF_EEPROM_ADDR 0
353 #if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
354 # define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR
356 #endif /* CONFIG_SPI || !defined(CONFIG_SYS_I2C_EEPROM_ADDR) */
358 #if defined(CONFIG_SPI)
359 extern void spi_init_f (void);
360 extern void spi_init_r (void);
361 extern ssize_t spi_read (uchar *, int, uchar *, int);
362 extern ssize_t spi_write (uchar *, int, uchar *, int);
365 #ifdef CONFIG_RPXCLASSIC
366 void rpxclassic_init (void);
369 void rpxlite_init (void);
372 /* $(BOARD)/mbx8xx.c */
373 void mbx_init (void);
374 void board_serial_init (void);
375 void board_ether_init (void);
379 /* $(BOARD)/hermes.c */
380 void hermes_start_lxt980 (int speed);
383 #ifdef CONFIG_EVB64260
384 void evb64260_init(void);
385 void debug_led(int, int);
386 void display_mem_map(void);
387 void perform_soft_reset(void);
390 /* $(BOARD)/$(BOARD).c */
391 int board_early_init_f (void);
392 int board_late_init (void);
393 int board_postclk_init (void); /* after clocks/timebase, before env/serial */
394 int board_early_init_r (void);
395 void board_poweroff (void);
397 #if defined(CONFIG_SYS_DRAM_TEST)
399 #endif /* CONFIG_SYS_DRAM_TEST */
402 #if defined(CONFIG_5xx) || \
404 uint get_immr (uint);
407 #if defined(CONFIG_MPC5xxx)
412 uint rd_ic_cst (void);
413 void wr_ic_cst (uint);
414 void wr_ic_adr (uint);
415 uint rd_dc_cst (void);
416 void wr_dc_cst (uint);
417 void wr_dc_adr (uint);
418 int icache_status (void);
419 void icache_enable (void);
420 void icache_disable(void);
421 int dcache_status (void);
422 void dcache_enable (void);
423 void dcache_disable(void);
424 void relocate_code (ulong, gd_t *, ulong) __attribute__ ((noreturn));
425 ulong get_endaddr (void);
426 void trap_init (ulong);
427 #if defined (CONFIG_4xx) || \
428 defined (CONFIG_MPC5xxx) || \
429 defined (CONFIG_74xx_7xx) || \
430 defined (CONFIG_74x) || \
431 defined (CONFIG_75x) || \
432 defined (CONFIG_74xx) || \
433 defined (CONFIG_MPC8220) || \
434 defined (CONFIG_MPC85xx) || \
435 defined (CONFIG_MPC86xx) || \
436 defined (CONFIG_MPC83xx)
437 unsigned char in8(unsigned int);
438 void out8(unsigned int, unsigned char);
439 unsigned short in16(unsigned int);
440 unsigned short in16r(unsigned int);
441 void out16(unsigned int, unsigned short value);
442 void out16r(unsigned int, unsigned short value);
443 unsigned long in32(unsigned int);
444 unsigned long in32r(unsigned int);
445 void out32(unsigned int, unsigned long value);
446 void out32r(unsigned int, unsigned long value);
447 void ppcDcbf(unsigned long value);
448 void ppcDcbi(unsigned long value);
450 void ppcDcbz(unsigned long value);
452 #if defined (CONFIG_MICROBLAZE)
453 unsigned short in16(unsigned int);
454 void out16(unsigned int, unsigned short value);
457 #if defined (CONFIG_MPC83xx)
458 void ppcDWload(unsigned int *addr, unsigned int *ret);
459 void ppcDWstore(unsigned int *addr, unsigned int *value);
463 int cpu_numcores (void);
466 int checkicache (void);
467 int checkdcache (void);
468 void upmconfig (unsigned int, unsigned int *, unsigned int);
469 ulong get_tbclk (void);
470 void reset_cpu (ulong addr);
471 #if defined (CONFIG_OF_LIBFDT) && defined (CONFIG_OF_BOARD_SETUP)
472 void ft_cpu_setup(void *blob, bd_t *bd);
474 void ft_pci_setup(void *blob, bd_t *bd);
479 /* $(CPU)/serial.c */
480 int serial_init (void);
481 void serial_exit (void);
482 void serial_setbrg (void);
483 void serial_putc (const char);
484 void serial_putc_raw(const char);
485 void serial_puts (const char *);
486 int serial_getc (void);
487 int serial_tstc (void);
489 void _serial_setbrg (const int);
490 void _serial_putc (const char, const int);
491 void _serial_putc_raw(const char, const int);
492 void _serial_puts (const char *, const int);
493 int _serial_getc (const int);
494 int _serial_tstc (const int);
497 int get_clocks (void);
498 int get_clocks_866 (void);
499 int sdram_adjust_866 (void);
500 int adjust_sdram_tbs_8xx (void);
501 #if defined(CONFIG_8260)
502 int prt_8260_clks (void);
503 #elif defined(CONFIG_MPC5xxx)
504 int prt_mpc5xxx_clks (void);
506 #if defined(CONFIG_MPC512X)
507 int prt_mpc512xxx_clks (void);
509 #if defined(CONFIG_MPC8220)
510 int prt_mpc8220_clks (void);
513 ulong get_OPB_freq (void);
514 ulong get_PCI_freq (void);
516 #if defined(CONFIG_S3C24X0) || \
517 defined(CONFIG_LH7A40X) || \
518 defined(CONFIG_S3C6400) || \
519 defined(CONFIG_EP93XX)
520 ulong get_FCLK (void);
521 ulong get_HCLK (void);
522 ulong get_PCLK (void);
523 ulong get_UCLK (void);
525 #if defined(CONFIG_LH7A40X)
526 ulong get_PLLCLK (void);
528 #if defined CONFIG_INCA_IP
529 uint incaip_get_cpuclk (void);
531 #if defined(CONFIG_IMX)
532 ulong get_systemPLLCLK(void);
533 ulong get_FCLK(void);
534 ulong get_HCLK(void);
535 ulong get_BCLK(void);
536 ulong get_PERCLK1(void);
537 ulong get_PERCLK2(void);
538 ulong get_PERCLK3(void);
540 ulong get_bus_freq (ulong);
541 int get_serial_clock(void);
543 #if defined(CONFIG_MPC85xx)
544 typedef MPC85xx_SYS_INFO sys_info_t;
545 void get_sys_info ( sys_info_t * );
546 ulong get_ddr_freq (ulong);
548 #if defined(CONFIG_MPC86xx)
549 typedef MPC86xx_SYS_INFO sys_info_t;
550 void get_sys_info ( sys_info_t * );
553 #if defined(CONFIG_4xx) || defined(CONFIG_IOP480)
554 # if defined(CONFIG_440)
555 # if defined(CONFIG_440SPE)
556 unsigned long determine_sysper(void);
557 unsigned long determine_pci_clock_per(void);
560 typedef PPC4xx_SYS_INFO sys_info_t;
561 int ppc440spe_revB(void);
562 void get_sys_info ( sys_info_t * );
565 /* $(CPU)/cpu_init.c */
566 #if defined(CONFIG_8xx) || defined(CONFIG_8260)
567 void cpu_init_f (volatile immap_t *immr);
569 #if defined(CONFIG_4xx) || defined(CONFIG_MPC85xx) || defined(CONFIG_MCF52x2) ||defined(CONFIG_MPC86xx)
570 void cpu_init_f (void);
573 int cpu_init_r (void);
574 #if defined(CONFIG_8260)
575 int prt_8260_rsr (void);
576 #elif defined(CONFIG_MPC83xx)
577 int prt_83xx_rsr (void);
580 /* $(CPU)/interrupts.c */
581 int interrupt_init (void);
582 void timer_interrupt (struct pt_regs *);
583 void external_interrupt (struct pt_regs *);
584 void irq_install_handler(int, interrupt_handler_t *, void *);
585 void irq_free_handler (int);
586 void reset_timer (void);
587 ulong get_timer (ulong base);
588 void set_timer (ulong t);
589 void enable_interrupts (void);
590 int disable_interrupts (void);
592 /* $(CPU)/.../commproc.c */
593 int dpram_init (void);
594 uint dpram_base(void);
595 uint dpram_base_align(uint align);
596 uint dpram_alloc(uint size);
597 uint dpram_alloc_align(uint size,uint align);
598 void bootcount_store (ulong);
599 ulong bootcount_load (void);
600 #define BOOTCOUNT_MAGIC 0xB001C041
602 /* $(CPU)/.../<eth> */
603 void mii_init (void);
605 /* $(CPU)/.../lcd.c */
606 ulong lcd_setmem (ulong);
608 /* $(CPU)/.../vfd.c */
609 ulong vfd_setmem (ulong);
611 /* $(CPU)/.../video.c */
612 ulong video_setmem (ulong);
614 /* arch/$(ARCH)/lib/cache.c */
615 void flush_cache (unsigned long, unsigned long);
616 void flush_dcache_range(unsigned long start, unsigned long stop);
617 void invalidate_dcache_range(unsigned long start, unsigned long stop);
620 /* arch/$(ARCH)/lib/ticks.S */
621 unsigned long long get_ticks(void);
622 void wait_ticks (unsigned long);
624 /* arch/$(ARCH)/lib/time.c */
625 void __udelay (unsigned long);
626 ulong usec2ticks (unsigned long usec);
627 ulong ticks2usec (unsigned long ticks);
628 int init_timebase (void);
631 int gunzip(void *, int, unsigned char *, unsigned long *);
632 int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
633 int stoponerr, int offset);
635 /* lib/net_utils.c */
637 static inline IPaddr_t getenv_IPaddr (char *var)
639 return (string_to_ip(getenv(var)));
643 void qsort(void *base, size_t nmemb, size_t size,
644 int(*compar)(const void *, const void *));
647 void udelay (unsigned long);
650 ulong simple_strtoul(const char *cp,char **endp,unsigned int base);
651 unsigned long long simple_strtoull(const char *cp,char **endp,unsigned int base);
652 long simple_strtol(const char *cp,char **endp,unsigned int base);
653 void panic(const char *fmt, ...)
654 __attribute__ ((format (__printf__, 1, 2)));
655 int sprintf(char * buf, const char *fmt, ...)
656 __attribute__ ((format (__printf__, 2, 3)));
657 int vsprintf(char *buf, const char *fmt, va_list args);
660 char * strmhz(char *buf, long hz);
663 #include <u-boot/crc.h>
665 /* common/console.c */
666 int console_init_f(void); /* Before relocation; uses the serial stuff */
667 int console_init_r(void); /* After relocation; uses the console stuff */
668 int console_assign (int file, char *devname); /* Assign the console */
670 int had_ctrlc (void); /* have we had a Control-C since last clear? */
671 void clear_ctrlc (void); /* clear the Control-C condition */
672 int disable_ctrlc (int); /* 1 to disable, 0 to enable Control-C detect */
675 * STDIO based functions (can always be used)
678 int serial_printf (const char *fmt, ...)
679 __attribute__ ((format (__printf__, 1, 2)));
685 void putc(const char c);
686 void puts(const char *s);
687 int printf(const char *fmt, ...)
688 __attribute__ ((format (__printf__, 1, 2)));
689 int vprintf(const char *fmt, va_list args);
692 #define eputc(c) fputc(stderr, c)
693 #define eputs(s) fputs(stderr, s)
694 #define eprintf(fmt,args...) fprintf(stderr,fmt ,##args)
697 * FILE based functions (can only be used AFTER relocation!)
704 int fprintf(int file, const char *fmt, ...)
705 __attribute__ ((format (__printf__, 2, 3)));
706 void fputs(int file, const char *s);
707 void fputc(int file, const char c);
712 * CONSOLE multiplexing.
714 #ifdef CONFIG_CONSOLE_MUX
718 int pcmcia_init (void);
720 #ifdef CONFIG_STATUS_LED
721 # include <status_led.h>
724 * Board-specific Platform code can reimplement show_boot_progress () if needed
726 void show_boot_progress(int val);
728 /* Multicore arch functions */
730 int cpu_status(int nr);
731 int cpu_reset(int nr);
732 int cpu_disable(int nr);
733 int cpu_release(int nr, int argc, char * const argv[]);
736 #endif /* __ASSEMBLY__ */
738 /* Put only stuff here that the assembler can digest */
741 #define CONFIG_HAS_POST
742 #ifndef CONFIG_POST_ALT_LIST
743 #define CONFIG_POST_STD_LIST
747 #ifdef CONFIG_INIT_CRITICAL
748 #error CONFIG_INIT_CRITICAL is deprecated!
749 #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README.
752 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
754 #define ROUND(a,b) (((a) + (b)) & ~((b) - 1))
755 #define DIV_ROUND(n,d) (((n) + ((d)/2)) / (d))
756 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
757 #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
759 #define ALIGN(x,a) __ALIGN_MASK((x),(typeof(x))(a)-1)
760 #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
762 #endif /* __COMMON_H_ */