/*************************************************************************** * __________ __ ___. * 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 "stdbool.h" #include "kernel.h" extern void system_reboot (void); extern void system_init(void); extern long cpu_frequency; #ifdef CPU_PP #define inl(a) (*(volatile unsigned long *) (a)) #define outl(a,b) (*(volatile unsigned long *) (b) = (a)) #define inb(a) (*(volatile unsigned char *) (a)) #define outb(a,b) (*(volatile unsigned char *) (b) = (a)) #define inw(a) (*(volatile unsigned short *) (a)) #define outw(a,b) (*(volatile unsigned short *) (b) = (a)) extern unsigned int ipod_hw_rev; static inline void udelay(unsigned usecs) { unsigned stop = USEC_TIMER + usecs; while (TIME_BEFORE(USEC_TIMER, stop)); } unsigned int current_core(void); #endif struct flash_header { unsigned long magic; unsigned long length; char version[32]; }; bool detect_flashed_romimage(void); bool detect_flashed_ramimage(void); bool detect_original_firmware(void); #if defined(HAVE_ADJUSTABLE_CPU_FREQ) \ && defined(ROCKBOX_HAS_LOGF) && (NUM_CORES == 1) #define CPU_BOOST_LOGGING #endif #ifdef HAVE_ADJUSTABLE_CPU_FREQ #define FREQ cpu_frequency void set_cpu_frequency(long frequency); #ifdef CPU_BOOST_LOGGING char * cpu_boost_log_getlog_first(void); char * cpu_boost_log_getlog_next(void); int cpu_boost_log_getcount(void); void cpu_boost_(bool on_off, char* location, int line); #else void cpu_boost(bool on_off); #endif void cpu_idle_mode(bool on_off); int get_cpu_boost_counter(void); #else #define FREQ CPU_FREQ #define set_cpu_frequency(frequency) #define cpu_boost(on_off) #define cpu_boost_id(on_off, id) #define cpu_idle_mode(on_off) #define get_cpu_boost_counter() #define get_cpu_boost_tracker() #endif #ifdef CPU_BOOST_LOGGING #define cpu_boost(on_off) cpu_boost_(on_off,__FILE__, __LINE__) #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 /* return number of elements in array a */ #define ARRAYLEN(a) (sizeof(a)/sizeof((a)[0])) /* return p incremented by specified number of bytes */ #define SKIPBYTES(p, count) ((typeof (p))((char *)(p) + (count))) #define P2_M1(p2) ((1 << (p2))-1) /* align up or down to nearest 2^p2 */ #define ALIGN_DOWN_P2(n, p2) ((n) & ~P2_M1(p2)) #define ALIGN_UP_P2(n, p2) ALIGN_DOWN_P2((n) + P2_M1(p2),p2) /* align up or down to nearest integer multiple of a */ #define ALIGN_DOWN(n, a) ((n)/(a)*(a)) #define ALIGN_UP(n, a) ALIGN_DOWN((n)+((a)-1),a) /* live endianness conversion */ #ifdef ROCKBOX_LITTLE_ENDIAN #define letoh16(x) (x) #define letoh32(x) (x) #define htole16(x) (x) #define htole32(x) (x) #define betoh16(x) swap16(x) #define betoh32(x) swap32(x) #define htobe16(x) swap16(x) #define htobe32(x) swap32(x) #define swap_odd_even_be32(x) (x) #define swap_odd_even_le32(x) swap_odd_even32(x) #else #define letoh16(x) swap16(x) #define letoh32(x) swap32(x) #define htole16(x) swap16(x) #define htole32(x) swap32(x) #define betoh16(x) (x) #define betoh32(x) (x) #define htobe16(x) (x) #define htobe32(x) (x) #define swap_odd_even_be32(x) swap_odd_even32(x) #define swap_odd_even_le32(x) (x) #endif /* static endianness conversion */ #define SWAP_16(x) ((typeof(x))(unsigned short)(((unsigned short)(x) >> 8) | \ ((unsigned short)(x) << 8))) #define SWAP_32(x) ((typeof(x))(unsigned long)( ((unsigned long)(x) >> 24) | \ (((unsigned long)(x) & 0xff0000ul) >> 8) | \ (((unsigned long)(x) & 0xff00ul) << 8) | \ ((unsigned long)(x) << 24))) #ifdef ROCKBOX_LITTLE_ENDIAN #define LE_TO_H16(x) (x) #define LE_TO_H32(x) (x) #define H_TO_LE16(x) (x) #define H_TO_LE32(x) (x) #define BE_TO_H16(x) SWAP_16(x) #define BE_TO_H32(x) SWAP_32(x) #define H_TO_BE16(x) SWAP_16(x) #define H_TO_BE32(x) SWAP_32(x) #else #define LE_TO_H16(x) SWAP_16(x) #define LE_TO_H32(x) SWAP_32(x) #define H_TO_LE16(x) SWAP_16(x) #define H_TO_LE32(x) SWAP_32(x) #define BE_TO_H16(x) (x) #define BE_TO_H32(x) (x) #define H_TO_BE16(x) (x) #define H_TO_BE32(x) (x) #endif #define nop \ asm volatile ("nop") /* gcc 3.4 changed the format of the constraints */ #if (__GNUC__ >= 3) && (__GNUC_MINOR__ > 3) || (__GNUC__ >= 4) #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 }; #ifndef SIMULATOR #ifdef CPU_COLDFIRE #include "system-target.h" #endif #endif #ifndef SIMULATOR #if CONFIG_CPU == S3C2440 #include "system-target.h" #endif #endif #if CONFIG_CPU == SH7034 #define or_b(mask, address) \ asm \ ("or.b %0,@(r0,gbr)" \ : \ : /* %0 */ I_CONSTRAINT((char)(mask)), \ /* %1 */ "z"(address-GBR)) #define and_b(mask, address) \ asm \ ("and.b %0,@(r0,gbr)" \ : \ : /* %0 */ I_CONSTRAINT((char)(mask)), \ /* %1 */ "z"(address-GBR)) #define xor_b(mask, address) \ asm \ ("xor.b %0,@(r0,gbr)" \ : \ : /* %0 */ I_CONSTRAINT((char)(mask)), \ /* %1 */ "z"(address-GBR)) #endif /* CONFIG_CPU == SH7034 */ #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 swap16(unsigned short value) /* result[15..8] = value[ 7..0]; result[ 7..0] = value[15..8]; */ { unsigned 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]; */ { unsigned long result; asm volatile ("swap.w\t%1,%0" : "=r"(result) : "r"(value)); return result; } static inline unsigned long swap32(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 defined(CPU_ARM) /* TODO: Implement set_irq_level and check CPU frequencies */ #if CONFIG_CPU == S3C2440 #define CPUFREQ_DEFAULT 98784000 #define CPUFREQ_NORMAL 98784000 #define CPUFREQ_MAX 296352000 #elif CONFIG_CPU == PNX0101 #define CPUFREQ_DEFAULT 12000000 #define CPUFREQ_NORMAL 48000000 #define CPUFREQ_MAX 60000000 #else #define CPUFREQ_DEFAULT_MULT 8 #define CPUFREQ_DEFAULT 24000000 #define CPUFREQ_NORMAL_MULT 10 #define CPUFREQ_NORMAL 30000000 #define CPUFREQ_MAX_MULT 25 #define CPUFREQ_MAX 75000000 #endif static inline unsigned short swap16(unsigned short value) /* result[15..8] = value[ 7..0]; result[ 7..0] = value[15..8]; */ { return (value >> 8) | (value << 8); } static inline unsigned long swap32(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 int tmp; asm volatile ( "eor %1, %0, %0, ror #16 \n\t" "bic %1, %1, #0xff0000 \n\t" "mov %0, %0, ror #8 \n\t" "eor %0, %0, %1, lsr #8 \n\t" : "+r" (value), "=r" (tmp) ); return value; } #define HIGHEST_IRQ_LEVEL (1) static inline int set_irq_level(int level) { unsigned long cpsr; /* Read the old level and set the new one */ asm volatile ("mrs %0,cpsr" : "=r" (cpsr)); asm volatile ("msr cpsr_c,%0" : : "r" ((cpsr & ~0x80) | (level << 7))); return (cpsr >> 7) & 1; } static inline void set_fiq_handler(void(*fiq_handler)(void)) { /* Install the FIQ handler */ *((unsigned int*)(15*4)) = (unsigned int)fiq_handler; } static inline void enable_fiq(void) { /* Clear FIQ disable bit */ asm volatile ( "mrs r0, cpsr \n"\ "bic r0, r0, #0x40 \n"\ "msr cpsr_c, r0 " : : : "r0" ); } static inline void disable_fiq(void) { /* Set FIQ disable bit */ asm volatile ( "mrs r0, cpsr \n"\ "orr r0, r0, #0x40 \n"\ "msr cpsr_c, r0 " : : : "r0" ); } #if CONFIG_CPU != S3C2440 #define invalidate_icache() #endif #if CONFIG_CPU == PNX0101 typedef void (*interrupt_handler_t)(void); void irq_set_int_handler(int n, interrupt_handler_t handler); void irq_enable_int(int n); void irq_disable_int(int n); #endif #endif #ifndef CPU_COLDFIRE static inline unsigned long swap_odd_even32(unsigned long value) { /* result[31..24],[15.. 8] = value[23..16],[ 7.. 0] result[23..16],[ 7.. 0] = value[31..24],[15.. 8] */ unsigned long t = value & 0xff00ff00; return (t >> 8) | ((t ^ value) << 8); } #endif #else /* SIMULATOR */ static inline unsigned short swap16(unsigned short value) /* result[15..8] = value[ 7..0]; result[ 7..0] = value[15..8]; */ { return (value >> 8) | (value << 8); } static inline unsigned long swap32(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 = swap16(value >> 16); unsigned long lo = swap16(value & 0xffff); return (lo << 16) | hi; } static inline unsigned long swap_odd_even32(unsigned long value) { /* result[31..24],[15.. 8] = value[23..16],[ 7.. 0] result[23..16],[ 7.. 0] = value[31..24],[15.. 8] */ unsigned long t = value & 0xff00ff00; return (t >> 8) | ((t ^ value) << 8); } #define invalidate_icache() #endif /* !SIMULATOR */ #endif /* __SYSTEM_H__ */