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Diffstat (limited to 'include/common.h')
| -rwxr-xr-x | include/common.h | 757 |
1 files changed, 757 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h new file mode 100755 index 0000000..e0b8281 --- /dev/null +++ b/include/common.h @@ -0,0 +1,757 @@ +/* + * (C) Copyright 2000-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __COMMON_H_ +#define __COMMON_H_ 1 + +#undef _LINUX_CONFIG_H +#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */ + +typedef unsigned char uchar; +typedef volatile unsigned long vu_long; +typedef volatile unsigned short vu_short; +typedef volatile unsigned char vu_char; + +#include <config.h> +#include <linux/bitops.h> +#include <linux/types.h> +#include <linux/string.h> +#include <asm/ptrace.h> +#include <stdarg.h> +#if defined(CONFIG_PCI) && defined(CONFIG_440) +#include <pci.h> +#endif +#if defined(CONFIG_8xx) +#include <asm/8xx_immap.h> +#if defined(CONFIG_MPC852) || defined(CONFIG_MPC852T) || \ + defined(CONFIG_MPC859) || defined(CONFIG_MPC859T) || \ + defined(CONFIG_MPC859DSL) || \ + defined(CONFIG_MPC866) || defined(CONFIG_MPC866T) || \ + defined(CONFIG_MPC866P) +# define CONFIG_MPC866_FAMILY 1 +#elif defined(CONFIG_MPC870) \ + || defined(CONFIG_MPC875) \ + || defined(CONFIG_MPC880) \ + || defined(CONFIG_MPC885) +# define CONFIG_MPC885_FAMILY 1 +#endif +#if defined(CONFIG_MPC860) \ + || defined(CONFIG_MPC860T) \ + || defined(CONFIG_MPC866_FAMILY) \ + || defined(CONFIG_MPC885_FAMILY) +# define CONFIG_MPC86x 1 +#endif +#elif defined(CONFIG_5xx) +#include <asm/5xx_immap.h> +#elif defined(CONFIG_MPC5xxx) +#include <mpc5xxx.h> +#elif defined(CONFIG_MPC8220) +#include <asm/immap_8220.h> +#elif defined(CONFIG_8260) +#if defined(CONFIG_MPC8247) \ + || defined(CONFIG_MPC8248) \ + || defined(CONFIG_MPC8271) \ + || defined(CONFIG_MPC8272) +#define CONFIG_MPC8272_FAMILY 1 +#endif +#if defined(CONFIG_MPC8272_FAMILY) +#define CONFIG_MPC8260 1 +#endif +#include <asm/immap_8260.h> +#endif +#ifdef CONFIG_MPC85xx +#include <mpc85xx.h> +#include <asm/immap_85xx.h> +#endif +#ifdef CONFIG_MPC83XX +#include <mpc83xx.h> +#include <asm/immap_83xx.h> +#endif +#ifdef CONFIG_4xx +#include <ppc4xx.h> +#endif +#ifdef CONFIG_HYMOD +#include <board/hymod/hymod.h> +#endif +#ifdef CONFIG_ARM +#define asmlinkage /* nothing */ +#endif + +#include <part.h> +#include <flash.h> +#include <image.h> +//#define DEBUG 1 //Charles +#undef DEBUG +#ifdef DEBUG +#define debug(fmt,args...) printf (fmt ,##args) +#define debugX(level,fmt,args...) if (DEBUG>=level) printf(fmt,##args); +#else +#define debug(fmt,args...) +#define debugX(level,fmt,args...) +#endif /* DEBUG */ + + + + +/*======rockpzhang======*/ + +#ifdef DEBUG +#define _DEBUG 1 +#else +#define _DEBUG 0 +#endif + + +/* + * An assertion is run-time check done in debug mode only. If DEBUG is not + * defined then it is skipped. If DEBUG is defined and the assertion fails, + * then it calls panic*( which may or may not reset/halt U-Boot (see + * CONFIG_PANIC_HANG), It is hoped that all failing assertions are found + * before release, and after release it is hoped that they don't matter. But + * in any case these failing assertions cannot be fixed with a reset (which + * may just do the same assertion again). + */ +void __assert_fail(const char *assertion, const char *file, unsigned line, + const char *function); +#define assert(x) \ + ({ if (!(x) && _DEBUG) \ + __assert_fail(#x, __FILE__, __LINE__, __func__); }) + +#define error(fmt, args...) do { \ + printf("ERROR: " fmt "\nat %s:%d/%s()\n", \ + ##args, __FILE__, __LINE__, __func__); \ +} while (0) + +int strcmp_compar(const void *, const void *); +/*======*/ + + + + + + + +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 */ + +/* + * enable common handling for all TQM8xxL/M boards: + * - CONFIG_TQM8xxM will be defined for all TQM8xxM boards + * - CONFIG_TQM8xxL will be defined for all TQM8xxL _and_ TQM8xxM boards + */ +#if defined(CONFIG_TQM823M) || defined(CONFIG_TQM850M) || \ + defined(CONFIG_TQM855M) || defined(CONFIG_TQM860M) || \ + defined(CONFIG_TQM862M) || defined(CONFIG_TQM866M) +# ifndef CONFIG_TQM8xxM +# define CONFIG_TQM8xxM +# endif +#endif +#if defined(CONFIG_TQM823L) || defined(CONFIG_TQM850L) || \ + defined(CONFIG_TQM855L) || defined(CONFIG_TQM860L) || \ + defined(CONFIG_TQM862L) || defined(CONFIG_TQM8xxM) +# ifndef CONFIG_TQM8xxL +# define CONFIG_TQM8xxL +# endif +#endif + +#ifndef CONFIG_SERIAL_MULTI + +#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2) \ + || defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \ + || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4) + +#define CONFIG_SERIAL_MULTI 1 + +#endif + +#endif /* CONFIG_SERIAL_MULTI */ + +/* + * General Purpose Utilities + */ +#define min(X, Y) \ + ({ typeof (X) __x = (X), __y = (Y); \ + (__x < __y) ? __x : __y; }) + +#define max(X, Y) \ + ({ typeof (X) __x = (X), __y = (Y); \ + (__x > __y) ? __x : __y; }) + + +/** + * container_of - cast a member of a structure out to the containing structure + * @ptr: the pointer to the member. + * @type: the type of the container struct this is embedded in. + * @member: the name of the member within the struct. + * + */ +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );}) +/* + * Function Prototypes + */ + +#ifdef CONFIG_SERIAL_SOFTWARE_FIFO +void serial_buffered_init (void); +void serial_buffered_putc (const char); +void serial_buffered_puts (const char *); +int serial_buffered_getc (void); +int serial_buffered_tstc (void); +#endif /* CONFIG_SERIAL_SOFTWARE_FIFO */ + +void hang (void) __attribute__ ((noreturn)); + +/* */ +long int initdram (int); +int display_options (void); +void print_size (ulong, const char *); + +/* common/main.c */ +void main_loop (void); +int run_command (const char *cmd, int flag); +int readline (const char *const prompt); +void init_cmd_timeout(void); +void reset_cmd_timeout(void); + +/* lib_$(ARCH)/board.c */ +void board_init_f (ulong); +void board_init_r (gd_t *, ulong); +int checkboard (void); +int checkflash (void); +int checkdram (void); +char * strmhz(char *buf, long hz); +int last_stage_init(void); +extern ulong monitor_flash_len; + +/* common/flash.c */ +void flash_perror (int); + +/* common/cmd_autoscript.c */ +int autoscript (ulong addr); + +/* common/cmd_bootm.c */ +void print_image_hdr (image_header_t *hdr); + +extern ulong load_addr; /* Default Load Address */ + +/* common/cmd_nvedit.c */ +int env_init (void); +void env_relocate (void); +char *getenv (char *); +int getenv_r (char *name, char *buf, unsigned len); +int saveenv (void); +#ifdef CONFIG_PPC /* ARM version to be fixed! */ +int inline setenv (char *, char *); +#else +int setenv (char *, char *); +#endif /* CONFIG_PPC */ +#ifdef CONFIG_ARM +# include <asm/mach-types.h> +# include <asm/setup.h> +# include <asm/u-boot-arm.h> /* ARM version to be fixed! */ +#endif /* CONFIG_ARM */ +#ifdef CONFIG_I386 /* x86 version to be fixed! */ +# include <asm/u-boot-i386.h> +#endif /* CONFIG_I386 */ + +#ifdef CONFIG_AUTO_COMPLETE +int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf); +#endif + +void pci_init (void); +void pci_init_board(void); +void pciinfo (int, int); + +#if defined(CONFIG_PCI) && defined(CONFIG_440) +# if defined(CFG_PCI_PRE_INIT) + int pci_pre_init (struct pci_controller * ); +# endif +# if defined(CFG_PCI_TARGET_INIT) + void pci_target_init (struct pci_controller *); +# endif +# if defined(CFG_PCI_MASTER_INIT) + void pci_master_init (struct pci_controller *); +# endif + int is_pci_host (struct pci_controller *); +#endif + +int misc_init_f (void); +int misc_init_r (void); + +/* common/exports.c */ +void jumptable_init(void); + +/* common/memsize.c */ +int get_ram_size (volatile long *, long); + +/* $(BOARD)/$(BOARD).c */ +void reset_phy (void); +void fdc_hw_init (void); + +/* $(BOARD)/eeprom.c */ +void eeprom_init (void); +#ifndef CONFIG_SPI +int eeprom_probe (unsigned dev_addr, unsigned offset); +#endif +int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt); +int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt); +#ifdef CONFIG_LWMON +extern uchar pic_read (uchar reg); +extern void pic_write (uchar reg, uchar val); +#endif + +/* + * Set this up regardless of board + * type, to prevent errors. + */ +#if defined(CONFIG_SPI) || !defined(CFG_I2C_EEPROM_ADDR) +# define CFG_DEF_EEPROM_ADDR 0 +#else +# define CFG_DEF_EEPROM_ADDR CFG_I2C_EEPROM_ADDR +#endif /* CONFIG_SPI || !defined(CFG_I2C_EEPROM_ADDR) */ + +#if defined(CONFIG_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); +#endif + +#ifdef CONFIG_RPXCLASSIC +void rpxclassic_init (void); +#endif + +void rpxlite_init (void); + +#ifdef CONFIG_MBX +/* $(BOARD)/mbx8xx.c */ +void mbx_init (void); +void board_serial_init (void); +void board_ether_init (void); +#endif + +#if defined(CONFIG_RPXCLASSIC) || defined(CONFIG_MBX) || \ + defined(CONFIG_IAD210) || defined(CONFIG_XPEDITE1K) || \ + defined(CONFIG_METROBOX) || defined(CONFIG_KAREF) +void board_get_enetaddr (uchar *addr); +#endif + +#ifdef CONFIG_HERMES +/* $(BOARD)/hermes.c */ +void hermes_start_lxt980 (int speed); +#endif + +#ifdef CONFIG_EVB64260 +void evb64260_init(void); +void debug_led(int, int); +void display_mem_map(void); +void perform_soft_reset(void); +#endif + +void load_sernum_ethaddr (void); + +/* $(BOARD)/$(BOARD).c */ +int board_early_init_f (void); +int board_late_init (void); +int board_postclk_init (void); /* after clocks/timebase, before env/serial */ +int board_early_init_r (void); +void board_poweroff (void); + +#if defined(CFG_DRAM_TEST) +int testdram(void); +#endif /* CFG_DRAM_TEST */ + +/* $(CPU)/start.S */ +#if defined(CONFIG_5xx) || \ + defined(CONFIG_8xx) +uint get_immr (uint); +#endif +uint get_pir (void); +#if defined(CONFIG_MPC5xxx) +uint get_svr (void); +#endif +uint get_pvr (void); +uint get_svr (void); +uint rd_ic_cst (void); +void wr_ic_cst (uint); +void wr_ic_adr (uint); +uint rd_dc_cst (void); +void wr_dc_cst (uint); +void wr_dc_adr (uint); +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 relocate_code (ulong, gd_t *, ulong); +ulong get_endaddr (void); +void trap_init (ulong); +#if defined (CONFIG_4xx) || \ + defined (CONFIG_MPC5xxx) || \ + defined (CONFIG_74xx_7xx) || \ + defined (CONFIG_74x) || \ + defined (CONFIG_75x) || \ + defined (CONFIG_74xx) || \ + defined (CONFIG_MPC8220) || \ + defined(CONFIG_MPC85xx) +unsigned char in8(unsigned int); +void out8(unsigned int, unsigned char); +unsigned short in16(unsigned int); +unsigned short in16r(unsigned int); +void out16(unsigned int, unsigned short value); +void out16r(unsigned int, unsigned short value); +unsigned long in32(unsigned int); +unsigned long in32r(unsigned int); +void out32(unsigned int, unsigned long value); +void out32r(unsigned int, unsigned long value); +void ppcDcbf(unsigned long value); +void ppcDcbi(unsigned long value); +void ppcSync(void); +void ppcDcbz(unsigned long value); +#endif + +#define out32r(addr, val) (*(volatile unsigned int *)(addr)) = val +//#define REG_GET32(addr) (*(volatile unsigned int *)(addr)) +//#define REG_VAL32(addr) (*(volatile unsigned int *)(addr)) +#define out16r(addr, val) (*(volatile unsigned short *)(addr)) = val +#define in16r(addr) (*(volatile unsigned short *)(addr)) +//#define REG_VAL16(addr) (*(volatile unsigned short *)(addr)) +//#define REG_SET8(addr, val) (*(volatile unsigned char *)(addr)) = val +//#define REG_GET8(addr) (*(volatile unsigned char *)(addr)) +//#define REG_VAL8(addr) (*(volatile unsigned char *)(addr)) +/* $(CPU)/cpu.c */ +int checkcpu (void); +int checkicache (void); +int checkdcache (void); +void upmconfig (unsigned int, unsigned int *, unsigned int); +ulong get_tbclk (void); +void reset_cpu (ulong addr); + +/* $(CPU)/serial.c */ +int serial_init (void); +void serial_addr (unsigned int); +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); + +void _serial_setbrg (const int); +void _serial_putc (const char, const int); +void _serial_putc_raw(const char, const int); +void _serial_puts (const char *, const int); +int _serial_getc (const int); +int _serial_tstc (const int); + +/* $(CPU)/speed.c */ +int get_clocks (void); +int get_clocks_866 (void); +int sdram_adjust_866 (void); +int adjust_sdram_tbs_8xx (void); +#if defined(CONFIG_8260) +int prt_8260_clks (void); +#elif defined(CONFIG_MPC83XX) +int print_clock_conf(void); +#elif defined(CONFIG_MPC5xxx) +int prt_mpc5xxx_clks (void); +#endif +#if defined(CONFIG_MPC8220) +int prt_mpc8220_clks (void); +#endif +#ifdef CONFIG_4xx +ulong get_OPB_freq (void); +ulong get_PCI_freq (void); +#endif +#if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) || defined(CONFIG_LH7A40X) +ulong get_FCLK (void); +ulong get_HCLK (void); +ulong get_PCLK (void); +ulong get_UCLK (void); +#endif +#if defined(CONFIG_LH7A40X) +ulong get_PLLCLK (void); +#endif +#if defined CONFIG_INCA_IP +uint incaip_get_cpuclk (void); +#endif +#if defined(CONFIG_IMX) +ulong get_systemPLLCLK(void); +ulong get_FCLK(void); +ulong get_HCLK(void); +ulong get_BCLK(void); +ulong get_PERCLK1(void); +ulong get_PERCLK2(void); +ulong get_PERCLK3(void); +#endif +ulong get_bus_freq (ulong); + +#if defined(CONFIG_MPC85xx) +typedef MPC85xx_SYS_INFO sys_info_t; +void get_sys_info ( sys_info_t * ); +#endif + +#if defined(CONFIG_4xx) || defined(CONFIG_IOP480) +# if defined(CONFIG_440) + typedef PPC440_SYS_INFO sys_info_t; +# else + typedef PPC405_SYS_INFO sys_info_t; +# endif +void get_sys_info ( sys_info_t * ); +#endif + +/* $(CPU)/cpu_init.c */ +#if defined(CONFIG_8xx) || defined(CONFIG_8260) +void cpu_init_f (volatile immap_t *immr); +#endif +#if defined(CONFIG_4xx) || defined(CONFIG_MPC85xx) || defined(CONFIG_MCF52x2) +void cpu_init_f (void); +#endif + +int cpu_init_r (void); +#if defined(CONFIG_8260) +int prt_8260_rsr (void); +#endif + +/* $(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); +ulong get_timer (ulong base); +void set_timer (ulong t); +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 post_word_store (ulong); +ulong post_word_load (void); +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)/.../vfd.c */ +ulong vfd_setmem (ulong); + +/* $(CPU)/.../video.c */ +ulong video_setmem (ulong); + +/* lib_$(ARCH)/cache.c */ +void flush_cache (unsigned long, unsigned long); + + +/* lib_$(ARCH)/ticks.S */ +unsigned long long get_ticks(void); +void wait_ticks (unsigned long); + +/* lib_$(ARCH)/time.c */ +void udelay (unsigned long); +ulong usec2ticks (unsigned long usec); +ulong ticks2usec (unsigned long ticks); +int init_timebase (void); + +/* lib_generic/vsprintf.c */ +ulong simple_strtoul(const char *cp,char **endp,unsigned int base); +#ifdef CFG_64BIT_VSPRINTF +unsigned long long simple_strtoull(const char *cp,char **endp,unsigned int base); +#endif +long simple_strtol(const char *cp,char **endp,unsigned int base); +void panic(const char *fmt, ...); +int sprintf(char * buf, const char *fmt, ...); +int vsprintf(char *buf, const char *fmt, va_list args); + +/* lib_generic/crc32.c */ + +ulong crc32_no_comp (ulong, const unsigned char *, uint); + +/* common/console.c */ +int console_init_f(void); /* Before relocation; uses the serial stuff */ +int console_init_r(void); /* After relocation; uses the console stuff */ +int console_assign (int file, char *devname); /* Assign the console */ +int ctrlc (void); +int had_ctrlc (void); /* have we had a Control-C since last clear? */ +void clear_ctrlc (void); /* clear the Control-C condition */ +int disable_ctrlc (int); /* 1 to disable, 0 to enable Control-C detect */ + +/* + * STDIO based functions (can always be used) + */ + +/* serial stuff */ +void serial_printf (const char *fmt, ...); + +/* stdin */ +int getc(void); +int tstc(void); + +/* stdout */ +void putc(const char c); +void puts(const char *s); +int printf(const char *fmt, ...); +void vprintf(const char *fmt, va_list args); + +/* stderr */ +#define eputc(c) fputc(stderr, c) +#define eputs(s) fputs(stderr, s) +#define eprintf(fmt,args...) fprintf(stderr,fmt ,##args) + +/* + * FILE based functions (can only be used AFTER relocation!) + */ + +#define stdin 0 +#define stdout 1 +#define stderr 2 +#define MAX_FILES 3 +#define NAND_WRITE 1 +#define NAND_READ 0 + +void fprintf(int file, const char *fmt, ...); +void fputs(int file, const char *s); +void fputc(int file, const char c); +int ftstc(int file); +int fgetc(int file); + +int pcmcia_init (void); + +#ifdef CONFIG_SHOW_BOOT_PROGRESS +void show_boot_progress (int status); +#endif + +#ifdef CONFIG_INIT_CRITICAL +#error CONFIG_INIT_CRITICAL is depracted! +#error Read section CONFIG_SKIP_LOWLEVEL_INIT in README. +#endif + +/* + * ARCH_DMA_MINALIGN is defined in asm/cache.h for each architecture. It + * is used to align DMA buffers. + */ +#ifndef __ASSEMBLY__ +#include <asm/cache.h> +#endif + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +#define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1)) +#define DIV_ROUND(n,d) (((n) + ((d)/2)) / (d)) +#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) +#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) + +#define ALIGN(x,a) __ALIGN_MASK((x),(typeof(x))(a)-1) +#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) + + +/* + * The ALLOC_CACHE_ALIGN_BUFFER macro is used to allocate a buffer on the + * stack that meets the minimum architecture alignment requirements for DMA. + * Such a buffer is useful for DMA operations where flushing and invalidating + * the cache before and after a read and/or write operation is required for + * correct operations. + * + * When called the macro creates an array on the stack that is sized such + * that: + * + * 1) The beginning of the array can be advanced enough to be aligned. + * + * 2) The size of the aligned portion of the array is a multiple of the minimum + * architecture alignment required for DMA. + * + * 3) The aligned portion contains enough space for the original number of + * elements requested. + * + * The macro then creates a pointer to the aligned portion of this array and + * assigns to the pointer the address of the first element in the aligned + * portion of the array. + * + * Calling the macro as: + * + * ALLOC_CACHE_ALIGN_BUFFER(uint32_t, buffer, 1024); + * + * Will result in something similar to saying: + * + * uint32_t buffer[1024]; + * + * The following differences exist: + * + * 1) The resulting buffer is guaranteed to be aligned to the value of + * ARCH_DMA_MINALIGN. + * + * 2) The buffer variable created by the macro is a pointer to the specified + * type, and NOT an array of the specified type. This can be very important + * if you want the address of the buffer, which you probably do, to pass it + * to the DMA hardware. The value of &buffer is different in the two cases. + * In the macro case it will be the address of the pointer, not the address + * of the space reserved for the buffer. However, in the second case it + * would be the address of the buffer. So if you are replacing hard coded + * stack buffers with this macro you need to make sure you remove the & from + * the locations where you are taking the address of the buffer. + * + * Note that the size parameter is the number of array elements to allocate, + * not the number of bytes. + * + * This macro can not be used outside of function scope, or for the creation + * of a function scoped static buffer. It can not be used to create a cache + * line aligned global buffer. + */ + + +#define ALLOC_ALIGN_BUFFER(type, name, size, align) \ + char __##name[ROUND(size * sizeof(type), align) + (align - 1)]; \ + \ + type *name = (type *) ALIGN((unsigned long int)__##name, align) +#define ALLOC_CACHE_ALIGN_BUFFER(type, name, size) \ + ALLOC_ALIGN_BUFFER(type, name, size, ARCH_DMA_MINALIGN) + +/* + * DEFINE_CACHE_ALIGN_BUFFER() is similar to ALLOC_CACHE_ALIGN_BUFFER, but it's + * purpose is to allow allocating aligned buffers outside of function scope. + * Usage of this macro shall be avoided or used with extreme care! + */ +#define DEFINE_ALIGN_BUFFER(type, name, size, align) \ + static char __##name[roundup(size * sizeof(type), align)] \ + __attribute__((aligned(align))); \ + \ + static type *name = (type *)__##name +#define DEFINE_CACHE_ALIGN_BUFFER(type, name, size) \ + DEFINE_ALIGN_BUFFER(type, name, size, ARCH_DMA_MINALIGN) + + +#endif /* __COMMON_H_ */ |