arch/m68knommu/platform/5407/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5407/config.c
   5  *
   6  *      Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
   7  *      Copyright (C) 2000, Lineo (www.lineo.com)
   8  */
   9
  10 /***************************************************************************/
  11
  12 #include <linux/config.h>
  13 #include <linux/kernel.h>
  14 #include <linux/sched.h>
  15 #include <linux/param.h>
  16 #include <linux/init.h>
  17 #include <linux/interrupt.h>
  18 #include <asm/irq.h>
  19 #include <asm/dma.h>
  20 #include <asm/traps.h>
  21 #include <asm/machdep.h>
  22 #include <asm/coldfire.h>
  23 #include <asm/mcftimer.h>
  24 #include <asm/mcfsim.h>
  25 #include <asm/mcfdma.h>
  26
  27 /***************************************************************************/
  28
  29 void coldfire_tick(void);
  30 void coldfire_timer_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
  31 unsigned long coldfire_timer_offset(void);
  32 void coldfire_trap_init(void);
  33 void coldfire_reset(void);
  34
  35 extern unsigned int mcf_timervector;
  36 extern unsigned int mcf_profilevector;
  37 extern unsigned int mcf_timerlevel;
  38
  39 /***************************************************************************/
  40
  41 /*
  42  *      DMA channel base address table.
  43  */
  44 unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
  45         MCF_MBAR + MCFDMA_BASE0,
  46         MCF_MBAR + MCFDMA_BASE1,
  47         MCF_MBAR + MCFDMA_BASE2,
  48         MCF_MBAR + MCFDMA_BASE3,
  49 };
  50
  51 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
  52
  53 /***************************************************************************/
  54
  55 void mcf_autovector(unsigned int vec)
  56 {
  57         volatile unsigned char  *mbar;
  58
  59         if ((vec >= 25) && (vec <= 31)) {
  60                 mbar = (volatile unsigned char *) MCF_MBAR;
  61                 vec = 0x1 << (vec - 24);
  62                 *(mbar + MCFSIM_AVR) |= vec;
  63                 mcf_setimr(mcf_getimr() & ~vec);
  64         }
  65 }
  66
  67 /***************************************************************************/
  68
  69 void mcf_settimericr(unsigned int timer, unsigned int level)
  70 {
  71         volatile unsigned char *icrp;
  72         unsigned int icr, imr;
  73
  74         if (timer <= 2) {
  75                 switch (timer) {
  76                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
  77                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
  78                 }
  79
  80                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
  81                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
  82                 mcf_setimr(mcf_getimr() & ~imr);
  83         }
  84 }
  85
  86 /***************************************************************************/
  87
  88 int mcf_timerirqpending(int timer)
  89 {
  90         unsigned int imr = 0;
  91
  92         switch (timer) {
  93         case 1:  imr = MCFSIM_IMR_TIMER1; break;
  94         case 2:  imr = MCFSIM_IMR_TIMER2; break;
  95         default: break;
  96         }
  97         return (mcf_getipr() & imr);
  98 }
  99
 100 /***************************************************************************/
 101
 102 void config_BSP(char *commandp, int size)
 103 {
 104         mcf_setimr(MCFSIM_IMR_MASKALL);
 105
 106 #if defined(CONFIG_BOOTPARAM)
 107         strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
 108         commandp[size-1] = 0;
 109 #else
 110         memset(commandp, 0, size);
 111 #endif
 112
 113 #if defined(CONFIG_CLEOPATRA)
 114         /* Different timer setup - to prevent device clash */
 115         mcf_timervector = 30;
 116         mcf_profilevector = 31;
 117         mcf_timerlevel = 6;
 118 #endif
 119
 120         mach_sched_init = coldfire_timer_init;
 121         mach_tick = coldfire_tick;
 122         mach_gettimeoffset = coldfire_timer_offset;
 123         mach_trap_init = coldfire_trap_init;
 124         mach_reset = coldfire_reset;
 125 }
 126
 127 /***************************************************************************/