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/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
  27 void coldfire_tick(void);
  28 void coldfire_timer_init(irq_handler_t handler);
  29 unsigned long coldfire_timer_offset(void);
  30 void coldfire_reset(void);
  31
  32 /***************************************************************************/
  33
  34 /*
  35  *      DMA channel base address table.
  36  */
  37 unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
  38         MCF_MBAR + MCFDMA_BASE0,
  39         MCF_MBAR + MCFDMA_BASE1,
  40 };
  41
  42 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
  43
  44 /***************************************************************************/
  45
  46 void mcf_autovector(unsigned int vec)
  47 {
  48         volatile unsigned char  *mbar;
  49         unsigned char           icr;
  50
  51         if ((vec >= 25) && (vec <= 31)) {
  52                 vec -= 25;
  53                 mbar = (volatile unsigned char *) MCF_MBAR;
  54                 icr = MCFSIM_ICR_AUTOVEC | (vec << 3);
  55                 *(mbar + MCFSIM_ICR1 + vec) = icr;
  56                 vec = 0x1 << (vec + 1);
  57                 mcf_setimr(mcf_getimr() & ~vec);
  58         }
  59 }
  60
  61 /***************************************************************************/
  62
  63 void mcf_settimericr(unsigned int timer, unsigned int level)
  64 {
  65         volatile unsigned char *icrp;
  66         unsigned int icr, imr;
  67
  68         if (timer <= 2) {
  69                 switch (timer) {
  70                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
  71                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
  72                 }
  73
  74                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
  75                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
  76                 mcf_setimr(mcf_getimr() & ~imr);
  77         }
  78 }
  79
  80 /***************************************************************************/
  81
  82 int mcf_timerirqpending(int timer)
  83 {
  84         unsigned int imr = 0;
  85
  86         switch (timer) {
  87         case 1:  imr = MCFSIM_IMR_TIMER1; break;
  88         case 2:  imr = MCFSIM_IMR_TIMER2; break;
  89         default: break;
  90         }
  91         return (mcf_getipr() & imr);
  92 }
  93
  94 /***************************************************************************/
  95
  96 void config_BSP(char *commandp, int size)
  97 {
  98         mcf_setimr(MCFSIM_IMR_MASKALL);
  99
 100 #if defined(CONFIG_NETtel)
 101         /* Copy command line from FLASH to local buffer... */
 102         memcpy(commandp, (char *) 0xf0004000, size);
 103         commandp[size-1] = 0;
 104 #endif /* CONFIG_NETtel */
 105
 106         mach_sched_init = coldfire_timer_init;
 107         mach_tick = coldfire_tick;
 108         mach_gettimeoffset = coldfire_timer_offset;
 109         mach_reset = coldfire_reset;
 110 }
 111
 112 /***************************************************************************/