/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2002 by Alan Korr * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #ifndef __SYSTEM_H__ #define __SYSTEM_H__ #include "cpu.h" #include "config.h" #include "stdbool.h" extern void system_reboot (void); extern void system_init(void); extern long cpu_frequency; #ifdef HAVE_ADJUSTABLE_CPU_FREQ #define FREQ cpu_frequency void set_cpu_frequency(long frequency); void cpu_boost(bool on_off); #else #define FREQ CPU_FREQ #endif #define BAUDRATE 9600 #ifndef NULL #define NULL ((void*)0) #endif #ifndef MIN #define MIN(a, b) (((a)<(b))?(a):(b)) #endif #ifndef MAX #define MAX(a, b) (((a)>(b))?(a):(b)) #endif #ifdef LITTLE_ENDIAN #define SWAB16(x) (x) #define SWAB32(x) (x) #endif #define nop \ asm volatile ("nop") /* gcc 3.4 changed the format of the constraints */ #if (__GNUC__ >= 3) && (__GNUC_MINOR__ > 3) #define I_CONSTRAINT "I08" #else #define I_CONSTRAINT "I" #endif /* Utilize the user break controller to catch invalid memory accesses. */ int system_memory_guard(int newmode); enum { MEMGUARD_KEEP = -1, /* don't change the mode; for reading */ MEMGUARD_NONE = 0, /* catch nothing */ MEMGUARD_FLASH_WRITES, /* catch writes to area 02 (flash ROM) */ MEMGUARD_ZERO_AREA, /* catch all accesses to areas 00 and 01 */ MAXMEMGUARD }; #if CONFIG_CPU == SH7034 #define or_b(mask, address) \ asm \ ("or.b\t%0,@(r0,gbr)" \ : \ : /* %0 */ I_CONSTRAINT((char)(mask)), \ /* %1 */ "z"(address-GBR)) #define and_b(mask, address) \ asm \ ("and.b\t%0,@(r0,gbr)" \ : \ : /* %0 */ I_CONSTRAINT((char)(mask)), \ /* %1 */ "z"(address-GBR)) #define xor_b(mask, address) \ asm \ ("xor.b\t%0,@(r0,gbr)" \ : \ : /* %0 */ I_CONSTRAINT((char)(mask)), \ /* %1 */ "z"(address-GBR)) #endif #ifndef SIMULATOR /**************************************************************************** * Interrupt level setting * The level is left shifted 4 bits ****************************************************************************/ #if CONFIG_CPU == SH7034 #define HIGHEST_IRQ_LEVEL (15<<4) static inline int set_irq_level(int level) { int i; /* Read the old level and set the new one */ asm volatile ("stc sr, %0" : "=r" (i)); asm volatile ("ldc %0, sr" : : "r" (level)); return i; } static inline unsigned short SWAB16(unsigned short value) /* result[15..8] = value[ 7..0]; result[ 7..0] = value[15..8]; */ { short result; asm volatile ("swap.b\t%1,%0" : "=r"(result) : "r"(value)); return result; } static inline unsigned long SWAW32(unsigned long value) /* result[31..16] = value[15.. 0]; result[15.. 0] = value[31..16]; */ { long result; asm volatile ("swap.w\t%1,%0" : "=r"(result) : "r"(value)); return result; } static inline unsigned long SWAB32(unsigned long value) /* result[31..24] = value[ 7.. 0]; result[23..16] = value[15.. 8]; result[15.. 8] = value[23..16]; result[ 7.. 0] = value[31..24]; */ { asm volatile ("swap.b\t%0,%0\n" "swap.w\t%0,%0\n" "swap.b\t%0,%0\n" : "+r"(value)); return value; } #define invalidate_icache() #elif CONFIG_CPU == MCF5249 #define HIGHEST_IRQ_LEVEL (7<<8) static inline int set_irq_level(int level) { int oldlevel; /* Read the old level and set the new one */ asm volatile ("move.w %%sr,%0\n" "or.l #0x2000,%1\n" "move.w %1,%%sr\n" : "=r" (oldlevel), "+r" (level) : ); return oldlevel; } static inline unsigned short SWAB16(unsigned short value) /* result[15..8] = value[ 7..0]; result[ 7..0] = value[15..8]; */ { return (value >> 8) | (value << 8); } static inline unsigned long SWAB32(unsigned long value) /* result[31..24] = value[ 7.. 0]; result[23..16] = value[15.. 8]; result[15.. 8] = value[23..16]; result[ 7.. 0] = value[31..24]; */ { unsigned short hi = SWAB16(value >> 16); unsigned short lo = SWAB16(value & 0xffff); return (lo << 16) | hi; } static inline void invalidate_icache(void) { asm volatile ("move.l #0x01000000,%d0\n" "movec.l %d0,%cacr\n" "move.l #0x80000000,%d0\n" "movec.l %d0,%cacr"); } #define CPUFREQ_DEFAULT CPU_FREQ #define CPUFREQ_NORMAL 47980800 #define CPUFREQ_MAX 119952000 #elif CONFIG_CPU == TCC730 extern int smsc_version(void); extern void smsc_delay(void); extern void set_pll_freq(int pll_index, long freq_out); extern void* volatile interrupt_vector[16] __attribute__ ((section(".idata"))); extern void ddma_transfer(int dir, int mem, void* intAddr, long extAddr, int num); #define HIGHEST_IRQ_LEVEL (1) static inline int set_irq_level(int level) { int result; __asm__ ("ld %0, 0\n\t" "tstsr ie\n\t" "incc %0" : "=r"(result)); if (level > 0) __asm__ volatile ("clrsr ie"); else __asm__ volatile ("setsr ie"); return result; } static inline unsigned short SWAB16(unsigned short value) /* result[15..8] = value[ 7..0]; result[ 7..0] = value[15..8]; */ { return (value >> 8) | (value << 8); } static inline unsigned long SWAB32(unsigned long value) /* result[31..24] = value[ 7.. 0]; result[23..16] = value[15.. 8]; result[15.. 8] = value[23..16]; result[ 7.. 0] = value[31..24]; */ { unsigned long hi = SWAB16(value >> 16); unsigned long lo = SWAB16(value & 0xffff); return (lo << 16) | hi; } /* Archos uses: 22MHz: busy wait on dma 32MHz: normal 80Mhz: heavy load */ #define CPUFREQ_DEFAULT CPU_FREQ #define CPUFREQ_NORMAL (32000000) #define CPUFREQ_MAX (80000000) #define invalidate_icache() #endif #else #define invalidate_icache() #endif #endif