/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2007 by Jens Arnold * Based on the work of Alan Korr and others * * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include #include "config.h" #include "system.h" #include "lcd.h" #include "font.h" #include "led.h" 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" }; #define RESERVE_INTERRUPT(number) "\t.long\t_UIE" #number "\n" #define DEFAULT_INTERRUPT(name, number) "\t.weak\t_" #name \ "\n\t.set\t_" #name ",_UIE" #number \ "\n\t.long\t_" #name "\n" asm ( /* Vector table. * Handled in asm because gcc 4.x doesn't allow weak aliases to symbols * defined in an asm block -- silly. * Reset vectors (0..3) are handled in crt0.S */ ".section\t.vectors,\"aw\",@progbits\n" 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) /* UIE# block. * Must go into the same section as the UIE() handler */ "\t.text\n" "_UIE4:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE5:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE6:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE7:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE8:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE9:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE10:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE11:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE12:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE13:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE14:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE15:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE16:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE17:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE18:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE19:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE20:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE21:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE22:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE23:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE24:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE25:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE26:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE27:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE28:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE29:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE30:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE31:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE32:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE33:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE34:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE35:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE36:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE37:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE38:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE39:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE40:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE41:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE42:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE43:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE44:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE45:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE46:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE47:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE48:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE49:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE50:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE51:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE52:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE53:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE54:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE55:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE56:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE57:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE58:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE59:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE60:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE61:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE62:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE63:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE64:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE65:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE66:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE67:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE68:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE69:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE70:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE71:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE72:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE73:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE74:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE75:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE76:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE77:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE78:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE79:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE80:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE81:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE82:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE83:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE84:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE85:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE86:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE87:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE88:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE89:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE90:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE91:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE92:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE93:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE94:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE95:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE96:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE97:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE98:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE99:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE100:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE101:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE102:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE103:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE104:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE105:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE106:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE107:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE108:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" "_UIE109:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n" ); extern void UIE4(void); /* needed for calculating the UIE number */ void UIE (unsigned int pc) __attribute__((section(".text"))); void UIE (unsigned int pc) /* Unexpected Interrupt or Exception */ { 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)UIE4 + 12)>>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); lcd_update (); /* try to restart firmware if ON is pressed */ system_exception_wait(); /* 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 */ while (1); } 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) { disable_irq(); 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)); } void system_exception_wait(void) { #if (CONFIG_LED == LED_REAL) bool state = false; int i = 0; #endif while (1) { #if (CONFIG_LED == LED_REAL) if (--i <= 0) { state = !state; led(state); i = 240000; } #endif #if CONFIG_KEYPAD == PLAYER_PAD /* Player */ if (!(PADRL & 0x20)) #elif CONFIG_KEYPAD == RECORDER_PAD /* Recorder */ #ifdef HAVE_FMADC if (!(PCDR & 0x0008)) #else if (!(PBDRH & 0x01)) #endif #elif CONFIG_KEYPAD == ONDIO_PAD /* Ondio */ if (!(PCDR & 0x0008)) #endif /* CONFIG_KEYPAD */ return; } } /* 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; }