/*************************************************************************** * __________ __ ___. * 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. * ****************************************************************************/ #include #include "config.h" #include #include "lcd.h" #include "font.h" #include "system.h" #include "kernel.h" #include "timer.h" #ifndef SIMULATOR long cpu_frequency = CPU_FREQ; #endif #ifdef HAVE_ADJUSTABLE_CPU_FREQ int boost_counter = 0; bool cpu_idle = false; void cpu_boost(bool on_off) { if(on_off) { /* Boost the frequency if not already boosted */ if(boost_counter++ == 0) { set_cpu_frequency(CPUFREQ_MAX); } } else { /* Lower the frequency if the counter reaches 0 */ if(--boost_counter == 0) { if(cpu_idle) set_cpu_frequency(CPUFREQ_DEFAULT); else set_cpu_frequency(CPUFREQ_NORMAL); } /* Safety measure */ if(boost_counter < 0) boost_counter = 0; } } void cpu_idle_mode(bool on_off) { cpu_idle = on_off; /* We need to adjust the frequency immediately if the CPU isn't boosted */ if(boost_counter == 0) { if(cpu_idle) set_cpu_frequency(CPUFREQ_DEFAULT); else set_cpu_frequency(CPUFREQ_NORMAL); } } #endif #if CONFIG_CPU == TCC730 void* volatile interrupt_vector[16] __attribute__ ((section(".idata"))); static void ddma_wait_idle(void) __attribute__ ((section (".icode"))); static void ddma_wait_idle(void) { /* TODO: power saving trick: set the CPU freq to 22MHz while doing the busy wait after a disk dma access. (Used by Archos) */ do { } while ((DDMACOM & 3) != 0); } void ddma_transfer(int dir, int mem, void* intAddr, long extAddr, int num) __attribute__ ((section (".icode"))); void ddma_transfer(int dir, int mem, void* intAddr, long extAddr, int num) { int irq = set_irq_level(1); ddma_wait_idle(); long externalAddress = (long) extAddr; long internalAddress = ((long) intAddr) & 0xFFFF; /* HW wants those two in word units. */ num /= 2; externalAddress /= 2; DDMACFG = (dir << 1) | (mem << 2); DDMAIADR = internalAddress; DDMAEADR = externalAddress; DDMANUM = num; DDMACOM |= 0x4; /* start */ ddma_wait_idle(); /* wait for completion */ set_irq_level(irq); } static void ddma_wait_idle_noicode(void) { do { } while ((DDMACOM & 3) != 0); } static void ddma_transfer_noicode(int dir, int mem, long intAddr, long extAddr, int num) { int irq = set_irq_level(1); ddma_wait_idle_noicode(); long externalAddress = (long) extAddr; long internalAddress = (long) intAddr; /* HW wants those two in word units. */ num /= 2; externalAddress /= 2; DDMACFG = (dir << 1) | (mem << 2); DDMAIADR = internalAddress; DDMAEADR = externalAddress; DDMANUM = num; DDMACOM |= 0x4; /* start */ ddma_wait_idle_noicode(); /* wait for completion */ set_irq_level(irq); } /* Some linker-defined symbols */ extern int icodecopy; extern int icodesize; extern int icodestart; /* change the a PLL frequency */ void set_pll_freq(int pll_index, long freq_out) { volatile unsigned int* plldata; volatile unsigned char* pllcon; if (pll_index == 0) { plldata = &PLL0DATA; pllcon = &PLL0CON; } else { plldata = &PLL1DATA; pllcon = &PLL1CON; } /* VC0 is 32768 Hz */ #define VC0FREQ (32768L) unsigned m = (freq_out / VC0FREQ) - 2; /* TODO: if m is too small here, use the divider bits [0,1] */ *plldata = m << 2; *pllcon |= 0x1; /* activate */ do { } while ((*pllcon & 0x2) == 0); /* wait for stabilization */ } int smsc_version(void) { int v; int* smsc_ver_addr = (int*)0x4C20; __asm__ ("ldc %0, @%1" : "=r"(v) : "a"(smsc_ver_addr)); v &= 0xFF; if (v < 4 || v == 0xFF) { return 3; } return v; } void smsc_delay() { int i; /* FIXME: tune the delay. Delay doesn't depend on CPU speed in Archos' firmware. */ for (i = 0; i < 100; i++) { } } static void extra_init(void) { /* Power on stuff */ P1 |= 0x07; P1CON |= 0x1f; /* P5 conf * lines 0, 1 & 4 are digital, other analog. : */ P5CON = 0xec; P6CON = 0x19; /* P7 conf nothing to do: all are inputs (reset value of the register is good) */ /* SMSC chip config (?) */ P10CON |= 0x20; P6 &= 0xF7; P10 &= 0x20; smsc_delay(); if (smsc_version() < 4) { P6 |= 0x08; P10 |= 0x20; } } void set_cpu_frequency(long frequency) { /* Enable SDRAM refresh, at least 15MHz */ if (frequency < cpu_frequency) MIUDCNT = 0x800 | (frequency * 15/1000000L - 1); set_pll_freq(0, frequency); PLL0CON |= 0x4; /* use as CPU clock */ cpu_frequency = frequency; /* wait states and such not changed by Archos. (!?) */ /* Enable SDRAM refresh, 15MHz. */ MIUDCNT = 0x800 | (frequency * 15/1000000L - 1); tick_start(1000/HZ); /* TODO: when uart is done; sync uart freq */ } /* called by crt0 */ void system_init(void) { /* Disable watchdog */ WDTEN = 0xA5; /**************** * GPIO ports */ /* keep alive (?) -- clear the bit to prevent crash at start (??) */ P8 = 0x00; P8CON = 0x01; /* smsc chip init (?) */ P10 = 0x20; P6 = 0x08; P10CON = 0x20; P6CON = 0x08; /******** * CPU */ /* PLL0 (cpu osc. frequency) */ /* set_cpu_frequency(CPU_FREQ); */ /******************* * configure S(D)RAM */ /************************ * Copy .icode section to icram */ ddma_transfer_noicode(0, 0, 0x40, (long)&icodecopy, (int)&icodesize); /*************************** * Interrupts */ /* priorities ? */ /* mask */ IMR0 = 0; IMR1 = 0; /* IRQ0 BT INT */ /* IRQ1 RTC INT */ /* IRQ2 TA INT */ /* IRQ3 TAOV INT */ /* IRQ4 TB INT */ /* IRQ5 TBOV INT */ /* IRQ6 TC INT */ /* IRQ7 TCOV INT */ /* IRQ8 USB INT */ /* IRQ9 PPIC INT */ /* IRQ10 UART_Rx/UART_Err/ UART_tx INT */ /* IRQ11 IIC INT */ /* IRQ12 SIO INT */ /* IRQ13 IIS0 INT */ /* IRQ14 IIS1 INT */ /* IRQ15 ­ */ extra_init(); } void system_reboot (void) { } int system_memory_guard(int newmode) { (void)newmode; return 0; } #elif defined(CPU_COLDFIRE) #define default_interrupt(name) \ extern __attribute__((weak,alias("UIE"))) void name (void) static const char* const irqname[] = { "", "", "AccessErr","AddrErr","IllInstr", "", "","", "PrivVio","Trace","Line-A", "Line-F","Debug","","FormErr","Uninit", "","","","","","","","", "Spurious","Level1","Level2","Level3","Level4","Level5","Level6","Level7", "Trap0","Trap1","Trap2","Trap3","Trap4","Trap5","Trap6","Trap7", "Trap8","Trap9","Trap10","Trap11","Trap12","Trap13","Trap14","Trap15", "SWT","Timer0","Timer1","I2C","UART1","UART2","DMA0","DMA1", "DMA2","DMA3","QSPI","","","","","", "PDIR1FULL","PDIR2FULL","EBUTXEMPTY","IIS2TXEMPTY", "IIS1TXEMPTY","PDIR3FULL","PDIR3RESYN","UQ2CHANERR", "AUDIOTICK","PDIR2RESYN","PDIR2UNOV","PDIR1RESYN", "PDIR1UNOV","UQ1CHANERR","IEC2BUFATTEN","IEC2PARERR", "IEC2VALNOGOOD","IEC2CNEW","IEC1BUFATTEN","UCHANTXNF", "UCHANTXUNDER","UCHANTXEMPTY","PDIR3UNOV","IEC1PARERR", "IEC1VALNOGOOD","IEC1CNEW","EBUTXRESYN","EBUTXUNOV", "IIS2TXRESYN","IIS2TXUNOV","IIS1TXRESYN","IIS1TXUNOV", "GPIO0","GPI1","GPI2","GPI3","GPI4","GPI5","GPI6","GPI7", "","","","","","","","SOFTINT0", "SOFTINT1","SOFTINT2","SOFTINT3","", "","CDROMCRCERR","CDROMNOSYNC","CDROMILSYNC", "CDROMNEWBLK","","","","","","","", "","","","","","","","", "","","","","","","","", "","","","","","","","", "","","","","","","","", "","","","","","","","", "","","","","","","","", "","","","","","","","", "","","","","","","","" }; default_interrupt (TRAP0); /* Trap #0 */ default_interrupt (TRAP1); /* Trap #1 */ default_interrupt (TRAP2); /* Trap #2 */ default_interrupt (TRAP3); /* Trap #3 */ default_interrupt (TRAP4); /* Trap #4 */ default_interrupt (TRAP5); /* Trap #5 */ default_interrupt (TRAP6); /* Trap #6 */ default_interrupt (TRAP7); /* Trap #7 */ default_interrupt (TRAP8); /* Trap #8 */ default_interrupt (TRAP9); /* Trap #9 */ default_interrupt (TRAP10); /* Trap #10 */ default_interrupt (TRAP11); /* Trap #11 */ default_interrupt (TRAP12); /* Trap #12 */ default_interrupt (TRAP13); /* Trap #13 */ default_interrupt (TRAP14); /* Trap #14 */ default_interrupt (TRAP15); /* Trap #15 */ default_interrupt (SWT); /* Software Watchdog Timer */ default_interrupt (TIMER0); /* Timer 0 */ default_interrupt (TIMER1); /* Timer 1 */ default_interrupt (I2C); /* I2C */ default_interrupt (UART1); /* UART 1 */ default_interrupt (UART2); /* UART 2 */ default_interrupt (DMA0); /* DMA 0 */ default_interrupt (DMA1); /* DMA 1 */ default_interrupt (DMA2); /* DMA 2 */ default_interrupt (DMA3); /* DMA 3 */ default_interrupt (QSPI); /* QSPI */ default_interrupt (PDIR1FULL); /* Processor data in 1 full */ default_interrupt (PDIR2FULL); /* Processor data in 2 full */ default_interrupt (EBUTXEMPTY); /* EBU transmit FIFO empty */ default_interrupt (IIS2TXEMPTY); /* IIS2 transmit FIFO empty */ default_interrupt (IIS1TXEMPTY); /* IIS1 transmit FIFO empty */ default_interrupt (PDIR3FULL); /* Processor data in 3 full */ default_interrupt (PDIR3RESYN); /* Processor data in 3 resync */ default_interrupt (UQ2CHANERR); /* IEC958-2 Rx U/Q channel error */ default_interrupt (AUDIOTICK); /* "tick" interrupt */ default_interrupt (PDIR2RESYN); /* Processor data in 2 resync */ default_interrupt (PDIR2UNOV); /* Processor data in 2 under/overrun */ default_interrupt (PDIR1RESYN); /* Processor data in 1 resync */ default_interrupt (PDIR1UNOV); /* Processor data in 1 under/overrun */ default_interrupt (UQ1CHANERR); /* IEC958-1 Rx U/Q channel error */ default_interrupt (IEC2BUFATTEN);/* IEC958-2 channel buffer full */ default_interrupt (IEC2PARERR); /* IEC958-2 Rx parity or symbol error */ default_interrupt (IEC2VALNOGOOD);/* IEC958-2 flag not good */ default_interrupt (IEC2CNEW); /* IEC958-2 New C-channel received */ default_interrupt (IEC1BUFATTEN);/* IEC958-1 channel buffer full */ default_interrupt (UCHANTXNF); /* U channel Tx reg next byte is first */ default_interrupt (UCHANTXUNDER);/* U channel Tx reg underrun */ default_interrupt (UCHANTXEMPTY);/* U channel Tx reg is empty */ default_interrupt (PDIR3UNOV); /* Processor data in 3 under/overrun */ default_interrupt (IEC1PARERR); /* IEC958-1 Rx parity or symbol error */ default_interrupt (IEC1VALNOGOOD);/* IEC958-1 flag not good */ default_interrupt (IEC1CNEW); /* IEC958-1 New C-channel received */ default_interrupt (EBUTXRESYN); /* EBU Tx FIFO resync */ default_interrupt (EBUTXUNOV); /* EBU Tx FIFO under/overrun */ default_interrupt (IIS2TXRESYN); /* IIS2 Tx FIFO resync */ default_interrupt (IIS2TXUNOV); /* IIS2 Tx FIFO under/overrun */ default_interrupt (IIS1TXRESYN); /* IIS1 Tx FIFO resync */ default_interrupt (IIS1TXUNOV); /* IIS1 Tx FIFO under/overrun */ default_interrupt (GPI0); /* GPIO interrupt 0 */ default_interrupt (GPI1); /* GPIO interrupt 1 */ default_interrupt (GPI2); /* GPIO interrupt 2 */ default_interrupt (GPI3); /* GPIO interrupt 3 */ default_interrupt (GPI4); /* GPIO interrupt 4 */ default_interrupt (GPI5); /* GPIO interrupt 5 */ default_interrupt (GPI6); /* GPIO interrupt 6 */ default_interrupt (GPI7); /* GPIO interrupt 7 */ default_interrupt (SOFTINT0); /* Software interrupt 0 */ default_interrupt (SOFTINT1); /* Software interrupt 1 */ default_interrupt (SOFTINT2); /* Software interrupt 2 */ default_interrupt (SOFTINT3); /* Software interrupt 3 */ default_interrupt (CDROMCRCERR); /* CD-ROM CRC error */ default_interrupt (CDROMNOSYNC); /* CD-ROM No sync */ default_interrupt (CDROMILSYNC); /* CD-ROM Illegal sync */ default_interrupt (CDROMNEWBLK); /* CD-ROM New block */ void UIE (void) /* Unexpected Interrupt or Exception */ { unsigned int format_vector, pc; int vector; char str[32]; asm volatile ("move.l (52,%%sp),%0": "=r"(format_vector)); asm volatile ("move.l (56,%%sp),%0": "=r"(pc)); vector = (format_vector >> 18) & 0xff; /* clear screen */ lcd_clear_display (); #ifdef HAVE_LCD_BITMAP lcd_setfont(FONT_SYSFIXED); #endif snprintf(str,sizeof(str),"I%02x:%s",vector,irqname[vector]); lcd_puts(0,0,str); snprintf(str,sizeof(str),"at %08x",pc); lcd_puts(0,1,str); lcd_update(); /* set cpu frequency to 11mhz (to prevent overheating) */ DCR = (DCR & ~0x01ff) | 1; PLLCR = 0x10800000; while (1) { /* check for the ON button (and !hold) */ if ((GPIO1_READ & 0x22) == 0) SYPCR = 0xc0; /* Start watchdog timer with 512 cycles timeout. Don't service it. */ /* We need a reset method that works in all cases. Calling system_reboot() doesn't work when we're called from the debug interrupt, because then the CPU is in emulator mode and the only ways leaving it are exexcuting an rte instruction or performing a reset. Even disabling the breakpoint logic and performing special rte magic doesn't make system_reboot() reliable. The system restarts, but boot often fails with ata error -42. */ } } /* reset vectors are handled in crt0.S */ void (* const vbr[]) (void) __attribute__ ((section (".vectors"))) = { UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,TIMER0,TIMER1,UIE,UIE,UIE, /* lvl 3 lvl 4 */ TRAP0,TRAP1,TRAP2,TRAP3,TRAP4,TRAP5,TRAP6,TRAP7, TRAP8,TRAP9,TRAP10,TRAP11,TRAP12,TRAP13,TRAP14,TRAP15, SWT,UIE,UIE,I2C,UART1,UART2,DMA0,DMA1, DMA2,DMA3,QSPI,UIE,UIE,UIE,UIE,UIE, PDIR1FULL,PDIR2FULL,EBUTXEMPTY,IIS2TXEMPTY, IIS1TXEMPTY,PDIR3FULL,PDIR3RESYN,UQ2CHANERR, AUDIOTICK,PDIR2RESYN,PDIR2UNOV,PDIR1RESYN, PDIR1UNOV,UQ1CHANERR,IEC2BUFATTEN,IEC2PARERR, IEC2VALNOGOOD,IEC2CNEW,IEC1BUFATTEN,UCHANTXNF, UCHANTXUNDER,UCHANTXEMPTY,PDIR3UNOV,IEC1PARERR, IEC1VALNOGOOD,IEC1CNEW,EBUTXRESYN,EBUTXUNOV, IIS2TXRESYN,IIS2TXUNOV,IIS1TXRESYN,IIS1TXUNOV, GPI0,GPI1,GPI2,GPI3,GPI4,GPI5,GPI6,GPI7, UIE,UIE,UIE,UIE,UIE,UIE,UIE,SOFTINT0, SOFTINT1,SOFTINT2,SOFTINT3,UIE, UIE,CDROMCRCERR,CDROMNOSYNC,CDROMILSYNC, CDROMNEWBLK,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE, UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE,UIE }; void system_init(void) { /* Clear the accumulators. From here on it's the responsibility of whoever uses them to clear them after use (use movclr instruction). */ asm volatile ("movclr.l %%acc0, %%d0\n\t" "movclr.l %%acc1, %%d0\n\t" "movclr.l %%acc2, %%d0\n\t" "movclr.l %%acc3, %%d0\n\t" : : : "d0"); } void system_reboot (void) { set_cpu_frequency(0); asm(" move.w #0x2700,%sr"); /* Reset the cookie for the crt0 crash check */ asm(" move.l #0,%d0"); asm(" move.l %d0,0x10017ffc"); asm(" movec.l %d0,%vbr"); asm(" move.l 0,%sp"); asm(" move.l 4,%a0"); asm(" jmp (%a0)"); } /* Utilise the breakpoint hardware to catch invalid memory accesses. */ int system_memory_guard(int newmode) { static const unsigned long modes[MAXMEMGUARD][8] = { { /* catch nothing */ 0x2C870000, 0x00000000, /* TDR = 0x00000000 */ 0x2C8D0000, 0x00000000, /* ABLR = 0x00000000 */ 0x2C8C0000, 0x00000000, /* ABHR = 0x00000000 */ 0x2C860000, 0x00050000, /* AATR = 0x0005 */ }, { /* catch flash ROM writes */ 0x2C8D0000, 0x00000000, /* ABLR = 0x00000000 */ 0x2C8C0FFF, 0xFFFF0000, /* ABHR = 0x0FFFFFFF */ 0x2C860000, 0x6F050000, /* AATR = 0x6F05 */ 0x2C878000, 0x20080000, /* TDR = 0x80002008 */ }, { /* catch all accesses to zero area */ 0x2C8D0000, 0x00000000, /* ABLR = 0x00000000 */ 0x2C8C0FFF, 0xFFFF0000, /* ABHR = 0x0FFFFFFF */ 0x2C860000, 0xEF050000, /* AATR = 0xEF05 */ 0x2C878000, 0x20080000, /* TDR = 0x80002008 */ } /* Note: CPU space accesses (movec instruction), interrupt acknowledges and emulator mode accesses are never caught. */ }; static int cur_mode = MEMGUARD_NONE; int oldmode = cur_mode; const unsigned long *ptr; int i; if (newmode == MEMGUARD_KEEP) newmode = oldmode; /* Always set the new mode, we don't know the old settings as we cannot read back */ ptr = modes[newmode]; for (i = 0; i < 4; i++) { asm ( "wdebug (%0) \n" : : "a"(ptr)); ptr += 2; } cur_mode = newmode; return oldmode; } #ifndef TARGET_TREE #ifdef IRIVER_H100 #define MAX_REFRESH_TIMER 59 #define NORMAL_REFRESH_TIMER 21 #define DEFAULT_REFRESH_TIMER 4 #else #define MAX_REFRESH_TIMER 29 #define NORMAL_REFRESH_TIMER 10 #define DEFAULT_REFRESH_TIMER 1 #endif void set_cpu_frequency (long) __attribute__ ((section (".icode"))); void set_cpu_frequency(long frequency) { switch(frequency) { case CPUFREQ_MAX: DCR = (0x8200 | DEFAULT_REFRESH_TIMER); /* Refresh timer for bypass frequency */ PLLCR &= ~1; /* Bypass mode */ timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, false); PLLCR = 0x11856005; CSCR0 = 0x00001180; /* Flash: 4 wait states */ CSCR1 = 0x00000980; /* LCD: 2 wait states */ while(!(PLLCR & 0x80000000)) {}; /* Wait until the PLL has locked. This may take up to 10ms! */ timers_adjust_prescale(CPUFREQ_MAX_MULT, true); DCR = (0x8200 | MAX_REFRESH_TIMER); /* Refresh timer */ cpu_frequency = CPUFREQ_MAX; IDECONFIG1 = 0x106000 | (5 << 10); /* BUFEN2 enable + CS2Pre/CS2Post */ IDECONFIG2 = 0x40000 | (1 << 8); /* TA enable + CS2wait */ break; case CPUFREQ_NORMAL: DCR = (DCR & ~0x01ff) | DEFAULT_REFRESH_TIMER; /* Refresh timer for bypass frequency */ PLLCR &= ~1; /* Bypass mode */ timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, false); PLLCR = 0x1385e005; CSCR0 = 0x00000580; /* Flash: 1 wait state */ CSCR1 = 0x00000180; /* LCD: 0 wait states */ while(!(PLLCR & 0x80000000)) {}; /* Wait until the PLL has locked. This may take up to 10ms! */ timers_adjust_prescale(CPUFREQ_NORMAL_MULT, true); DCR = (0x8000 | NORMAL_REFRESH_TIMER); /* Refresh timer */ cpu_frequency = CPUFREQ_NORMAL; IDECONFIG1 = 0x106000 | (5 << 10); /* BUFEN2 enable + CS2Pre/CS2Post */ IDECONFIG2 = 0x40000 | (0 << 8); /* TA enable + CS2wait */ break; default: DCR = (DCR & ~0x01ff) | DEFAULT_REFRESH_TIMER; /* Refresh timer for bypass frequency */ PLLCR &= ~1; /* Bypass mode */ timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, true); PLLCR = 0x10800200; /* Power down PLL, but keep CLSEL and CRSEL */ CSCR0 = 0x00000180; /* Flash: 0 wait states */ CSCR1 = 0x00000180; /* LCD: 0 wait states */ DCR = (0x8000 | DEFAULT_REFRESH_TIMER); /* Refresh timer */ cpu_frequency = CPUFREQ_DEFAULT; IDECONFIG1 = 0x106000 | (1 << 10); /* BUFEN2 enable + CS2Pre/CS2Post */ IDECONFIG2 = 0x40000 | (0 << 8); /* TA enable + CS2wait */ break; } } #endif #elif CONFIG_CPU == SH7034 #include "led.h" #include "system.h" #include "rolo.h" #define default_interrupt(name,number) \ extern __attribute__((weak,alias("UIE" #number))) void name (void); void UIE##number (void) #define reserve_interrupt(number) \ void UIE##number (void) static const char* const irqname[] = { "", "", "", "", "IllInstr", "", "IllSltIn","","", "CPUAdrEr", "DMAAdrEr", "NMI", "UserBrk", "","","","","","","","","","","","","","","","","","","", "Trap32","Trap33","Trap34","Trap35","Trap36","Trap37","Trap38","Trap39", "Trap40","Trap41","Trap42","Trap43","Trap44","Trap45","Trap46","Trap47", "Trap48","Trap49","Trap50","Trap51","Trap52","Trap53","Trap54","Trap55", "Trap56","Trap57","Trap58","Trap59","Trap60","Trap61","Trap62","Trap63", "Irq0","Irq1","Irq2","Irq3","Irq4","Irq5","Irq6","Irq7", "Dma0","","Dma1","","Dma2","","Dma3","", "IMIA0","IMIB0","OVI0","", "IMIA1","IMIB1","OVI1","", "IMIA2","IMIB2","OVI2","", "IMIA3","IMIB3","OVI3","", "IMIA4","IMIB4","OVI4","", "Ser0Err","Ser0Rx","Ser0Tx","Ser0TE", "Ser1Err","Ser1Rx","Ser1Tx","Ser1TE", "ParityEr","A/D conv","","","Watchdog","DRAMRefr" }; reserve_interrupt ( 0); reserve_interrupt ( 1); reserve_interrupt ( 2); reserve_interrupt ( 3); default_interrupt (GII, 4); reserve_interrupt ( 5); default_interrupt (ISI, 6); reserve_interrupt ( 7); reserve_interrupt ( 8); default_interrupt (CPUAE, 9); default_interrupt (DMAAE, 10); default_interrupt (NMI, 11); default_interrupt (UB, 12); reserve_interrupt ( 13); reserve_interrupt ( 14); reserve_interrupt ( 15); reserve_interrupt ( 16); /* TCB #0 */ reserve_interrupt ( 17); /* TCB #1 */ reserve_interrupt ( 18); /* TCB #2 */ reserve_interrupt ( 19); /* TCB #3 */ reserve_interrupt ( 20); /* TCB #4 */ reserve_interrupt ( 21); /* TCB #5 */ reserve_interrupt ( 22); /* TCB #6 */ reserve_interrupt ( 23); /* TCB #7 */ reserve_interrupt ( 24); /* TCB #8 */ reserve_interrupt ( 25); /* TCB #9 */ reserve_interrupt ( 26); /* TCB #10 */ reserve_interrupt ( 27); /* TCB #11 */ reserve_interrupt ( 28); /* TCB #12 */ reserve_interrupt ( 29); /* TCB #13 */ reserve_interrupt ( 30); /* TCB #14 */ reserve_interrupt ( 31); /* TCB #15 */ default_interrupt (TRAPA32, 32); default_interrupt (TRAPA33, 33); default_interrupt (TRAPA34, 34); default_interrupt (TRAPA35, 35); default_interrupt (TRAPA36, 36); default_interrupt (TRAPA37, 37); default_interrupt (TRAPA38, 38); default_interrupt (TRAPA39, 39); default_interrupt (TRAPA40, 40); default_interrupt (TRAPA41, 41); default_interrupt (TRAPA42, 42); default_interrupt (TRAPA43, 43); default_interrupt (TRAPA44, 44); default_interrupt (TRAPA45, 45); default_interrupt (TRAPA46, 46); default_interrupt (TRAPA47, 47); default_interrupt (TRAPA48, 48); default_interrupt (TRAPA49, 49); default_interrupt (TRAPA50, 50); default_interrupt (TRAPA51, 51); default_interrupt (TRAPA52, 52); default_interrupt (TRAPA53, 53); default_interrupt (TRAPA54, 54); default_interrupt (TRAPA55, 55); default_interrupt (TRAPA56, 56); default_interrupt (TRAPA57, 57); default_interrupt (TRAPA58, 58); default_interrupt (TRAPA59, 59); default_interrupt (TRAPA60, 60); default_interrupt (TRAPA61, 61); default_interrupt (TRAPA62, 62); default_interrupt (TRAPA63, 63); default_interrupt (IRQ0, 64); default_interrupt (IRQ1, 65); default_interrupt (IRQ2, 66); default_interrupt (IRQ3, 67); default_interrupt (IRQ4, 68); default_interrupt (IRQ5, 69); default_interrupt (IRQ6, 70); default_interrupt (IRQ7, 71); default_interrupt (DEI0, 72); reserve_interrupt ( 73); default_interrupt (DEI1, 74); reserve_interrupt ( 75); default_interrupt (DEI2, 76); reserve_interrupt ( 77); default_interrupt (DEI3, 78); reserve_interrupt ( 79); default_interrupt (IMIA0, 80); default_interrupt (IMIB0, 81); default_interrupt (OVI0, 82); reserve_interrupt ( 83); default_interrupt (IMIA1, 84); default_interrupt (IMIB1, 85); default_interrupt (OVI1, 86); reserve_interrupt ( 87); default_interrupt (IMIA2, 88); default_interrupt (IMIB2, 89); default_interrupt (OVI2, 90); reserve_interrupt ( 91); default_interrupt (IMIA3, 92); default_interrupt (IMIB3, 93); default_interrupt (OVI3, 94); reserve_interrupt ( 95); default_interrupt (IMIA4, 96); default_interrupt (IMIB4, 97); default_interrupt (OVI4, 98); reserve_interrupt ( 99); default_interrupt (REI0, 100); default_interrupt (RXI0, 101); default_interrupt (TXI0, 102); default_interrupt (TEI0, 103); default_interrupt (REI1, 104); default_interrupt (RXI1, 105); default_interrupt (TXI1, 106); default_interrupt (TEI1, 107); reserve_interrupt ( 108); default_interrupt (ADITI, 109); /* reset vectors are handled in crt0.S */ void (*vbr[]) (void) __attribute__ ((section (".vectors"))) = { GII, /*** 4 General Illegal Instruction ***/ UIE5, /*** 5 Reserved ***/ ISI, /*** 6 Illegal Slot Instruction ***/ UIE7, /*** 7-8 Reserved ***/ UIE8, CPUAE, /*** 9 CPU Address Error ***/ DMAAE, /*** 10 DMA Address Error ***/ NMI, /*** 11 NMI ***/ UB, /*** 12 User Break ***/ /*** 13-31 Reserved ***/ UIE13,UIE14,UIE15,UIE16,UIE17,UIE18,UIE19,UIE20, UIE21,UIE22,UIE23,UIE24,UIE25,UIE26,UIE27,UIE28, UIE29,UIE30,UIE31, /*** 32-63 TRAPA #20...#3F ***/ TRAPA32,TRAPA33,TRAPA34,TRAPA35,TRAPA36,TRAPA37,TRAPA38,TRAPA39, TRAPA40,TRAPA41,TRAPA42,TRAPA43,TRAPA44,TRAPA45,TRAPA46,TRAPA47, TRAPA48,TRAPA49,TRAPA50,TRAPA51,TRAPA52,TRAPA53,TRAPA54,TRAPA55, TRAPA56,TRAPA57,TRAPA58,TRAPA59,TRAPA60,TRAPA61,TRAPA62,TRAPA63, /*** 64-71 IRQ0-7 ***/ IRQ0,IRQ1,IRQ2,IRQ3,IRQ4,IRQ5,IRQ6,IRQ7, DEI0, /*** 72 DMAC0 ***/ UIE73, /*** 73 Reserved ***/ DEI1, /*** 74 DMAC1 ***/ UIE75, /*** 75 Reserved ***/ DEI2, /*** 76 DMAC2 ***/ UIE77, /*** 77 Reserved ***/ DEI3, /*** 78 DMAC3 ***/ UIE79, /*** 79 Reserved ***/ IMIA0, /*** 80-82 ITU0 ***/ IMIB0, OVI0, UIE83, /*** 83 Reserved ***/ IMIA1, /*** 84-86 ITU1 ***/ IMIB1, OVI1, UIE87, /*** 87 Reserved ***/ IMIA2, /*** 88-90 ITU2 ***/ IMIB2, OVI2, UIE91, /*** 91 Reserved ***/ IMIA3, /*** 92-94 ITU3 ***/ IMIB3, OVI3, UIE95, /*** 95 Reserved ***/ IMIA4, /*** 96-98 ITU4 ***/ IMIB4, OVI4, UIE99, /*** 99 Reserved ***/ /*** 100-103 SCI0 ***/ REI0,RXI0,TXI0,TEI0, /*** 104-107 SCI1 ***/ REI1,RXI1,TXI1,TEI1, UIE108, /*** 108 Parity Control Unit ***/ ADITI /*** 109 AD Converter ***/ }; void UIE (unsigned int pc) /* Unexpected Interrupt or Exception */ { #if CONFIG_LED == LED_REAL bool state = true; #endif unsigned int n; char str[32]; asm volatile ("sts\tpr,%0" : "=r"(n)); /* clear screen */ lcd_clear_display (); #ifdef HAVE_LCD_BITMAP lcd_setfont(FONT_SYSFIXED); #endif /* output exception */ n = (n - (unsigned)UIE0 - 4)>>2; /* get exception or interrupt number */ snprintf(str,sizeof(str),"I%02x:%s",n,irqname[n]); lcd_puts(0,0,str); snprintf(str,sizeof(str),"at %08x",pc); lcd_puts(0,1,str); #ifdef HAVE_LCD_BITMAP lcd_update (); #endif while (1) { #if CONFIG_LED == LED_REAL volatile int i; led (state); state = !state; for (i = 0; i < 240000; ++i); #endif /* try to restart firmware if ON is pressed */ #if CONFIG_KEYPAD == PLAYER_PAD if (!(PADRL & 0x20)) #elif CONFIG_KEYPAD == RECORDER_PAD #ifdef HAVE_FMADC if (!(PCDR & 0x0008)) #else if (!(PBDRH & 0x01)) #endif #elif CONFIG_KEYPAD == ONDIO_PAD if (!(PCDR & 0x0008)) #endif { /* enable the watchguard timer, but don't service it */ RSTCSR_W = 0x5a40; /* Reset enabled, power-on reset */ TCSR_W = 0xa560; /* Watchdog timer mode, timer enabled, sysclk/2 */ } } } asm ( "_UIE0:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE1:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE2:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE3:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE4:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE5:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE6:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE7:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE8:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE9:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE10:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE11:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE12:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE13:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE14:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE15:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE16:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE17:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE18:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE19:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE20:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE21:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE22:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE23:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE24:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE25:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE26:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE27:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE28:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE29:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE30:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE31:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE32:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE33:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE34:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE35:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE36:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE37:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE38:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE39:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE40:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE41:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE42:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE43:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE44:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE45:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE46:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE47:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE48:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE49:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE50:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE51:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE52:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE53:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE54:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE55:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE56:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE57:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE58:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE59:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE60:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE61:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE62:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE63:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE64:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE65:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE66:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE67:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE68:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE69:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE70:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE71:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE72:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE73:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE74:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE75:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE76:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE77:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE78:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE79:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE80:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE81:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE82:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE83:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE84:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE85:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE86:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE87:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE88:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE89:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE90:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE91:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE92:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE93:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE94:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE95:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE96:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE97:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE98:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE99:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE100:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE101:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE102:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE103:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE104:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE105:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE106:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE107:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE108:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\t\n" "_UIE109:\tbsr\t_UIE\n\tmov.l\t@r15+,r4"); void system_init(void) { /* Disable all interrupts */ IPRA = 0; IPRB = 0; IPRC = 0; IPRD = 0; IPRE = 0; /* NMI level low, falling edge on all interrupts */ ICR = 0; /* Enable burst and RAS down mode on DRAM */ DCR |= 0x5000; /* Activate Warp mode (simultaneous internal and external mem access) */ BCR |= 0x2000; /* Bus state controller initializations. These are only necessary when running from flash. */ WCR1 = 0x40FD; /* Long wait states for CS6 (ATA), short for the rest. */ WCR3 = 0x8000; /* WAIT is pulled up, 1 state inserted for CS6 */ } void system_reboot (void) { set_irq_level(HIGHEST_IRQ_LEVEL); asm volatile ("ldc\t%0,vbr" : : "r"(0)); PACR2 |= 0x4000; /* for coldstart detection */ IPRA = 0; IPRB = 0; IPRC = 0; IPRD = 0; IPRE = 0; ICR = 0; asm volatile ("jmp @%0; mov.l @%1,r15" : : "r"(*(int*)0),"r"(4)); } /* Utilise the user break controller to catch invalid memory accesses. */ int system_memory_guard(int newmode) { static const struct { unsigned long addr; unsigned long mask; unsigned short bbr; } modes[MAXMEMGUARD] = { /* catch nothing */ { 0x00000000, 0x00000000, 0x0000 }, /* catch writes to area 02 (flash ROM) */ { 0x02000000, 0x00FFFFFF, 0x00F8 }, /* catch all accesses to areas 00 (internal ROM) and 01 (free) */ { 0x00000000, 0x01FFFFFF, 0x00FC } }; int oldmode = MEMGUARD_NONE; int i; /* figure out the old mode from what is in the UBC regs. If the register values don't match any mode, assume MEMGUARD_NONE */ for (i = MEMGUARD_NONE; i < MAXMEMGUARD; i++) { if (BAR == modes[i].addr && BAMR == modes[i].mask && BBR == modes[i].bbr) { oldmode = i; break; } } if (newmode == MEMGUARD_KEEP) newmode = oldmode; BBR = 0; /* switch off everything first */ /* always set the UBC according to the mode, in case the old settings didn't match any valid mode */ BAR = modes[newmode].addr; BAMR = modes[newmode].mask; BBR = modes[newmode].bbr; return oldmode; } #elif defined(CPU_ARM) static const char* const uiename[] = { "Undefined instruction", "Prefetch abort", "Data abort" }; /* Unexpected Interrupt or Exception handler. Currently only deals with exceptions, but will deal with interrupts later. */ void UIE(unsigned int pc, unsigned int num) { char str[32]; lcd_clear_display(); #ifdef HAVE_LCD_BITMAP lcd_setfont(FONT_SYSFIXED); #endif lcd_puts(0, 0, uiename[num]); snprintf(str, sizeof(str), "at %08x", pc); lcd_puts(0, 1, str); lcd_update(); while (1) { /* TODO: perhaps add button handling in here when we get a polling driver some day. */ } } #if CONFIG_CPU==PP5020 unsigned int ipod_hw_rev; #ifndef BOOTLOADER extern void TIMER1(void); extern void TIMER2(void); #if defined(APPLE_IPODMINI) extern void ipod_mini_button_int(void); void irq(void) { if (CPU_INT_STAT & TIMER1_MASK) TIMER1(); else if (CPU_INT_STAT & TIMER2_MASK) TIMER2(); else if (CPU_HI_INT_STAT & GPIO_MASK) ipod_mini_button_int(); } #else extern void ipod_4g_button_int(void); void irq(void) { if (CPU_INT_STAT & TIMER1_MASK) TIMER1(); else if (CPU_INT_STAT & TIMER2_MASK) TIMER2(); else if (CPU_HI_INT_STAT & I2C_MASK) ipod_4g_button_int(); } #endif #endif /* BOOTLOADER */ /* TODO: The following two function have been lifted straight from IPL, and hence have a lot of numeric addresses used straight. I'd like to use #defines for these, but don't know what most of them are for or even what they should be named. Because of this I also have no way of knowing how to extend the funtions to do alternate cache configurations and/or some other CPU frequency scaling. */ #ifndef BOOTLOADER static void ipod_init_cache(void) { /* Initialising the cache in the iPod bootloader prevents Rockbox from starting */ unsigned i; /* cache init mode? */ outl(0x4, 0x6000C000); /* PP5002 has 8KB cache */ for (i = 0xf0004000; i < 0xf0006000; i += 16) { outl(0x0, i); } outl(0x0, 0xf000f040); outl(0x3fc0, 0xf000f044); /* enable cache */ outl(0x1, 0x6000C000); for (i = 0x10000000; i < 0x10002000; i += 16) inb(i); } #endif /* Not all iPod targets support CPU freq. boosting yet */ #ifdef HAVE_ADJUSTABLE_CPU_FREQ void set_cpu_frequency(long frequency) { unsigned long postmult; if (frequency == CPUFREQ_NORMAL) postmult = CPUFREQ_NORMAL_MULT; else if (frequency == CPUFREQ_MAX) postmult = CPUFREQ_MAX_MULT; else postmult = CPUFREQ_DEFAULT_MULT; cpu_frequency = frequency; /* Enable PLL? */ outl(inl(0x70000020) | (1<<30), 0x70000020); /* Select 24MHz crystal as clock source? */ outl((inl(0x60006020) & 0x0fffff0f) | 0x20000020, 0x60006020); /* Clock frequency = (24/8)*postmult */ outl(0xaa020000 | 8 | (postmult << 8), 0x60006034); /* Wait for PLL relock? */ udelay(2000); /* Select PLL as clock source? */ outl((inl(0x60006020) & 0x0fffff0f) | 0x20000070, 0x60006020); } #elif !defined(BOOTLOADER) void ipod_set_cpu_frequency(void) { /* Enable PLL? */ outl(inl(0x70000020) | (1<<30), 0x70000020); /* Select 24MHz crystal as clock source? */ outl((inl(0x60006020) & 0x0fffff0f) | 0x20000020, 0x60006020); /* Clock frequency = (24/8)*25 = 75MHz */ outl(0xaa020000 | 8 | (25 << 8), 0x60006034); /* Wait for PLL relock? */ udelay(2000); /* Select PLL as clock source? */ outl((inl(0x60006020) & 0x0fffff0f) | 0x20000070, 0x60006020); } #endif void system_init(void) { #ifndef BOOTLOADER /* The hw revision is written to the last 4 bytes of SDRAM by the bootloader - we save it before Rockbox overwrites it. */ ipod_hw_rev = (*((volatile unsigned long*)(0x01fffffc))); /* disable all irqs */ outl(-1, 0x60001138); outl(-1, 0x60001128); outl(-1, 0x6000111c); outl(-1, 0x60001038); outl(-1, 0x60001028); outl(-1, 0x6000101c); #ifndef HAVE_ADJUSTABLE_CPU_FREQ ipod_set_cpu_frequency(); #endif ipod_init_cache(); #endif } void system_reboot(void) { } int system_memory_guard(int newmode) { (void)newmode; return 0; } #elif CONFIG_CPU==PP5002 unsigned int ipod_hw_rev; #ifndef BOOTLOADER extern void TIMER1(void); extern void TIMER2(void); void irq(void) { if (CPU_INT_STAT & TIMER1_MASK) TIMER1(); else if (CPU_INT_STAT & TIMER2_MASK) TIMER2(); } #endif /* TODO: The following two function have been lifted straight from IPL, and hence have a lot of numeric addresses used straight. I'd like to use #defines for these, but don't know what most of them are for or even what they should be named. Because of this I also have no way of knowing how to extend the funtions to do alternate cache configurations and/or some other CPU frequency scaling. */ #ifndef BOOTLOADER static void ipod_init_cache(void) { int i =0; /* Initialising the cache in the iPod bootloader prevents Rockbox from starting */ outl(inl(0xcf004050) & ~0x700, 0xcf004050); outl(0x4000, 0xcf004020); outl(0x2, 0xcf004024); /* PP5002 has 8KB cache */ for (i = 0xf0004000; i < (int)(0xf0006000); i += 16) { outl(0x0, i); } outl(0x0, 0xf000f020); outl(0x3fc0, 0xf000f024); outl(0x3, 0xcf004024); } static void ipod_set_cpu_speed(void) { outl(0x02, 0xcf005008); outl(0x55, 0xcf00500c); outl(0x6000, 0xcf005010); #if 1 // 75 MHz (24/24 * 75) (default) outl(24, 0xcf005018); outl(75, 0xcf00501c); #endif #if 0 // 66 MHz (24/3 * 8) outl(3, 0xcf005018); outl(8, 0xcf00501c); #endif outl(0xe000, 0xcf005010); udelay(2000); outl(0xa8, 0xcf00500c); } #endif void system_init(void) { #ifndef BOOTLOADER ipod_hw_rev = (*((volatile unsigned long*)(0x01fffffc))); outl(-1, 0xcf00101c); outl(-1, 0xcf001028); outl(-1, 0xcf001038); ipod_set_cpu_speed(); ipod_init_cache(); #endif } void system_reboot(void) { outl(inl(0xcf005030) | 0x4, 0xcf005030); } int system_memory_guard(int newmode) { (void)newmode; return 0; } #elif CONFIG_CPU==PNX0101 interrupt_handler_t interrupt_vector[0x1d] __attribute__ ((section(".idata"))); #define IRQ_REG(reg) (*(volatile unsigned long *)(0x80300000 + (reg))) static inline unsigned long irq_read(int reg) { unsigned long v, v2; do { v = IRQ_REG(reg); v2 = IRQ_REG(reg); } while (v != v2); return v; } #define IRQ_WRITE_WAIT(reg, val, cond) \ do { unsigned long v, v2; \ do { \ IRQ_REG(reg) = (val); \ v = IRQ_REG(reg); \ v2 = IRQ_REG(reg); \ } while ((v != v2) || !(cond)); \ } while (0); static void undefined_int(void) { } void irq(void) { int n = irq_read(0x100) >> 3; (*(interrupt_vector[n]))(); } void fiq(void) { } void irq_enable_int(int n) { IRQ_WRITE_WAIT(0x404 + n * 4, 0x4010000, v & 0x10000); } void irq_set_int_handler(int n, interrupt_handler_t handler) { interrupt_vector[n + 1] = handler; } void system_init(void) { int i; /* turn off watchdog */ (*(volatile unsigned long *)0x80002804) = 0; /* IRQ_WRITE_WAIT(0x100, 0, v == 0); IRQ_WRITE_WAIT(0x104, 0, v == 0); IRQ_WRITE_WAIT(0, 0, v == 0); IRQ_WRITE_WAIT(4, 0, v == 0); */ for (i = 0; i < 0x1c; i++) { IRQ_WRITE_WAIT(0x404 + i * 4, 0x1e000001, (v & 0x3010f) == 1); IRQ_WRITE_WAIT(0x404 + i * 4, 0x4000000, (v & 0x10000) == 0); IRQ_WRITE_WAIT(0x404 + i * 4, 0x10000001, (v & 0xf) == 1); interrupt_vector[i + 1] = undefined_int; } interrupt_vector[0] = undefined_int; } void system_reboot(void) { (*(volatile unsigned long *)0x80002804) = 1; while (1); } int system_memory_guard(int newmode) { (void)newmode; return 0; } #endif /* CPU_ARM */ #endif /* CONFIG_CPU */