1/***************************************************************************/ 2 3/* 4 * linux/arch/m68knommu/platform/5206e/config.c 5 * 6 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) 7 */ 8 9/***************************************************************************/ 10 11#include <linux/kernel.h> 12#include <linux/sched.h> 13#include <linux/param.h> 14#include <linux/interrupt.h> 15#include <asm/irq.h> 16#include <asm/dma.h> 17#include <asm/traps.h> 18#include <asm/machdep.h> 19#include <asm/coldfire.h> 20#include <asm/mcftimer.h> 21#include <asm/mcfsim.h> 22#include <asm/mcfdma.h> 23#include <asm/irq.h> 24 25/***************************************************************************/ 26 27void coldfire_tick(void); 28void coldfire_timer_init(irq_handler_t handler); 29unsigned long coldfire_timer_offset(void); 30void coldfire_trap_init(void); 31void coldfire_reset(void); 32 33/***************************************************************************/ 34 35/* 36 * DMA channel base address table. 37 */ 38unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { 39 MCF_MBAR + MCFDMA_BASE0, 40 MCF_MBAR + MCFDMA_BASE1, 41}; 42 43unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS]; 44 45/***************************************************************************/ 46 47void mcf_autovector(unsigned int vec) 48{ 49 volatile unsigned char *mbar; 50 unsigned char icr; 51 52 if ((vec >= 25) && (vec <= 31)) { 53 vec -= 25; 54 mbar = (volatile unsigned char *) MCF_MBAR; 55 icr = MCFSIM_ICR_AUTOVEC | (vec << 3); 56 *(mbar + MCFSIM_ICR1 + vec) = icr; 57 vec = 0x1 << (vec + 1); 58 mcf_setimr(mcf_getimr() & ~vec); 59 } 60} 61 62/***************************************************************************/ 63 64void mcf_settimericr(unsigned int timer, unsigned int level) 65{ 66 volatile unsigned char *icrp; 67 unsigned int icr, imr; 68 69 if (timer <= 2) { 70 switch (timer) { 71 case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break; 72 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break; 73 } 74 75 icrp = (volatile unsigned char *) (MCF_MBAR + icr); 76 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3; 77 mcf_setimr(mcf_getimr() & ~imr); 78 } 79} 80 81/***************************************************************************/ 82 83int mcf_timerirqpending(int timer) 84{ 85 unsigned int imr = 0; 86 87 switch (timer) { 88 case 1: imr = MCFSIM_IMR_TIMER1; break; 89 case 2: imr = MCFSIM_IMR_TIMER2; break; 90 default: break; 91 } 92 return (mcf_getipr() & imr); 93} 94 95/***************************************************************************/ 96 97void config_BSP(char *commandp, int size) 98{ 99 mcf_setimr(MCFSIM_IMR_MASKALL); 100 101#if defined(CONFIG_BOOTPARAM) 102 strncpy(commandp, CONFIG_BOOTPARAM_STRING, size); 103 commandp[size-1] = 0; 104#elif defined(CONFIG_NETtel) 105 /* Copy command line from FLASH to local buffer... */ 106 memcpy(commandp, (char *) 0xf0004000, size); 107 commandp[size-1] = 0; 108#else 109 memset(commandp, 0, size); 110#endif /* CONFIG_NETtel */ 111 112 mach_sched_init = coldfire_timer_init; 113 mach_tick = coldfire_tick; 114 mach_gettimeoffset = coldfire_timer_offset; 115 mach_trap_init = coldfire_trap_init; 116 mach_reset = coldfire_reset; 117} 118 119/***************************************************************************/ 120