arch/m68knommu/platform/5206e/config.c

   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/config.h>
  12 #include <linux/kernel.h>
  13 #include <linux/sched.h>
  14 #include <linux/param.h>
  15 #include <linux/interrupt.h>
  16 #include <asm/irq.h>
  17 #include <asm/dma.h>
  18 #include <asm/traps.h>
  19 #include <asm/machdep.h>
  20 #include <asm/coldfire.h>
  21 #include <asm/mcftimer.h>
  22 #include <asm/mcfsim.h>
  23 #include <asm/mcfdma.h>
  24 #include <asm/irq.h>
  25
  26 /***************************************************************************/
  27
  28 void coldfire_tick(void);
  29 void coldfire_timer_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
  30 unsigned long coldfire_timer_offset(void);
  31 void coldfire_trap_init(void);
  32 void coldfire_reset(void);
  33
  34 /***************************************************************************/
  35
  36 /*
  37  *      DMA channel base address table.
  38  */
  39 unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
  40         MCF_MBAR + MCFDMA_BASE0,
  41         MCF_MBAR + MCFDMA_BASE1,
  42 };
  43
  44 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
  45
  46 /***************************************************************************/
  47
  48 void 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
  65 void 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
  84 int 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
  98 void 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 #elif defined(CONFIG_NETtel)
 106         /* Copy command line from FLASH to local buffer... */
 107         memcpy(commandp, (char *) 0xf0004000, size);
 108         commandp[size-1] = 0;
 109 #else
 110         memset(commandp, 0, size);
 111 #endif /* CONFIG_NETtel */
 112
 113         mach_sched_init = coldfire_timer_init;
 114         mach_tick = coldfire_tick;
 115         mach_gettimeoffset = coldfire_timer_offset;
 116         mach_trap_init = coldfire_trap_init;
 117         mach_reset = coldfire_reset;
 118 }
 119
 120 /***************************************************************************/