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rockbox/firmware/system.c
Jörg Hohensohn 81e309dd1a We had a few set_irq_level(15) left in the code, instead of the new set_irq_level(HIGHEST_IRQ_LEVEL). Only one was really used, in system_reboot(), creating a (unlikely) race condition. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4374 a1c6a512-1295-4272-9138-f99709370657
2004-03-13 16:45:18 +00:00

501 lines
15 KiB
C
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/***************************************************************************
* __________ __ ___.
* 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 <stdio.h>
#include "config.h"
#include "lcd.h"
#include "font.h"
#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)
extern void reset_pc (void);
extern void reset_sp (void);
static const char* 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"))) =
{
/*** 4 General Illegal Instruction ***/
GII,
/*** 5 Reserved ***/
UIE5,
/*** 6 Illegal Slot Instruction ***/
ISI,
/*** 7-8 Reserved ***/
UIE7,UIE8,
/*** 9 CPU Address Error ***/
CPUAE,
/*** 10 DMA Address Error ***/
DMAAE,
/*** 11 NMI ***/
NMI,
/*** 12 User Break ***/
UB,
/*** 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,
/*** 72 DMAC0 ***/
DEI0,
/*** 73 Reserved ***/
UIE73,
/*** 74 DMAC1 ***/
DEI1,
/*** 75 Reserved ***/
UIE75,
/*** 76 DMAC2 ***/
DEI2,
/*** 77 Reserved ***/
UIE77,
/*** 78 DMAC3 ***/
DEI3,
/*** 79 Reserved ***/
UIE79,
/*** 80-82 ITU0 ***/
IMIA0,IMIB0,OVI0,
/*** 83 Reserved ***/
UIE83,
/*** 84-86 ITU1 ***/
IMIA1,IMIB1,OVI1,
/*** 87 Reserved ***/
UIE87,
/*** 88-90 ITU2 ***/
IMIA2,IMIB2,OVI2,
/*** 91 Reserved ***/
UIE91,
/*** 92-94 ITU3 ***/
IMIA3,IMIB3,OVI3,
/*** 95 Reserved ***/
UIE95,
/*** 96-98 ITU4 ***/
IMIA4,IMIB4,OVI4,
/*** 99 Reserved ***/
UIE99,
/*** 100-103 SCI0 ***/
REI0,RXI0,TXI0,TEI0,
/*** 104-107 SCI1 ***/
REI1,RXI1,TXI1,TEI1,
/*** 108 Parity Control Unit ***/
UIE108,
/*** 109 AD Converter ***/
ADITI
};
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));
}
void UIE (unsigned int pc) /* Unexpected Interrupt or Exception */
{
bool state = true;
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)
{
volatile int i;
led (state);
state = state?false:true;
for (i = 0; i < 240000; ++i);
/* try to restart firmware if ON is pressed */
#ifdef HAVE_LCD_CHARCELLS
if (!(PADR & 0x20))
rolo_load("/archos.mod");
#else
if (!(PBDR & PBDR_BTN_ON))
rolo_load("/ajbrec.ajz");
#endif
}
}
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. The correct settings for player models are not
verified, so we only do this for the recorder. */
#ifdef HAVE_RECORDING
WCR1 = 0x4000; /* Long wait states for CS6 (ATA), short for the rest. */
WCR3 = 0x8000; /* WAIT is pulled up, 1 state inserted for CS6 */
#endif
}
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