1/***************************************************************************/ 2 3/* 4 * linux/arch/m68knommu/platform/5206/config.c 5 * 6 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) 7 * Copyright (C) 2000-2001, Lineo Inc. (www.lineo.com) 8 */ 9 10/***************************************************************************/ 11 12#include <linux/kernel.h> 13#include <linux/sched.h> 14#include <linux/param.h> 15#include <linux/init.h> 16#include <linux/interrupt.h> 17#include <asm/irq.h> 18#include <asm/dma.h> 19#include <asm/traps.h> 20#include <asm/machdep.h> 21#include <asm/coldfire.h> 22#include <asm/mcftimer.h> 23#include <asm/mcfsim.h> 24#include <asm/mcfdma.h> 25 26/***************************************************************************/ 27 28void coldfire_tick(void); 29void coldfire_timer_init(irq_handler_t handler); 30unsigned long coldfire_timer_offset(void); 31void coldfire_trap_init(void); 32void coldfire_reset(void); 33 34/***************************************************************************/ 35 36/* 37 * DMA channel base address table. 38 */ 39unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { 40 MCF_MBAR + MCFDMA_BASE0, 41 MCF_MBAR + MCFDMA_BASE1, 42}; 43 44unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS]; 45 46/***************************************************************************/ 47 48void mcf_autovector(unsigned int vec) 49{ 50 volatile unsigned char *mbar; 51 unsigned char icr; 52 53 if ((vec >= 25) && (vec <= 31)) { 54 vec -= 25; 55 mbar = (volatile unsigned char *) MCF_MBAR; 56 icr = MCFSIM_ICR_AUTOVEC | (vec << 3); 57 *(mbar + MCFSIM_ICR1 + vec) = icr; 58 vec = 0x1 << (vec + 1); 59 mcf_setimr(mcf_getimr() & ~vec); 60 } 61} 62 63/***************************************************************************/ 64 65void mcf_settimericr(unsigned int timer, unsigned int level) 66{ 67 volatile unsigned char *icrp; 68 unsigned int icr, imr; 69 70 if (timer <= 2) { 71 switch (timer) { 72 case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break; 73 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break; 74 } 75 76 icrp = (volatile unsigned char *) (MCF_MBAR + icr); 77 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3; 78 mcf_setimr(mcf_getimr() & ~imr); 79 } 80} 81 82/***************************************************************************/ 83 84int mcf_timerirqpending(int timer) 85{ 86 unsigned int imr = 0; 87 88 switch (timer) { 89 case 1: imr = MCFSIM_IMR_TIMER1; break; 90 case 2: imr = MCFSIM_IMR_TIMER2; break; 91 default: break; 92 } 93 return (mcf_getipr() & imr); 94} 95 96/***************************************************************************/ 97 98void config_BSP(char *commandp, int size) 99{ 100 mcf_setimr(MCFSIM_IMR_MASKALL); 101 102#if defined(CONFIG_BOOTPARAM) 103 strncpy(commandp, CONFIG_BOOTPARAM_STRING, size); 104 commandp[size-1] = 0; 105#else 106 memset(commandp, 0, size); 107#endif 108 109 mach_sched_init = coldfire_timer_init; 110 mach_tick = coldfire_tick; 111 mach_gettimeoffset = coldfire_timer_offset; 112 mach_trap_init = coldfire_trap_init; 113 mach_reset = coldfire_reset; 114} 115 116/***************************************************************************/ 117