arch/m68knommu/platform/5272/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5272/config.c
   5  *
   6  *      Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
   7  *      Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.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  *      Some platforms need software versions of the GPIO data registers.
  43  */
  44 unsigned short ppdata;
  45 unsigned char ledbank = 0xff;
  46
  47 /***************************************************************************/
  48
  49 /*
  50  *      DMA channel base address table.
  51  */
  52 unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
  53         MCF_MBAR + MCFDMA_BASE0,
  54 };
  55
  56 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
  57
  58 /***************************************************************************/
  59
  60 void mcf_disableall(void)
  61 {
  62         volatile unsigned long  *icrp;
  63
  64         icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
  65         icrp[0] = 0x88888888;
  66         icrp[1] = 0x88888888;
  67         icrp[2] = 0x88888888;
  68         icrp[3] = 0x88888888;
  69 }
  70
  71 /***************************************************************************/
  72
  73 void mcf_autovector(unsigned int vec)
  74 {
  75         /* Everything is auto-vectored on the 5272 */
  76 }
  77
  78 /***************************************************************************/
  79
  80 void mcf_settimericr(int timer, int level)
  81 {
  82         volatile unsigned long *icrp;
  83
  84         if ((timer >= 1 ) && (timer <= 4)) {
  85                 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
  86                 *icrp = (0x8 | level) << ((4 - timer) * 4);
  87         }
  88 }
  89
  90 /***************************************************************************/
  91
  92 int mcf_timerirqpending(int timer)
  93 {
  94         volatile unsigned long *icrp;
  95
  96         if ((timer >= 1 ) && (timer <= 4)) {
  97                 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
  98                 return (*icrp & (0x8 << ((4 - timer) * 4)));
  99         }
 100         return 0;
 101 }
 102
 103 /***************************************************************************/
 104
 105 void config_BSP(char *commandp, int size)
 106 {
 107 #if 0
 108         volatile unsigned long  *pivrp;
 109
 110         /* Set base of device vectors to be 64 */
 111         pivrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_PIVR);
 112         *pivrp = 0x40;
 113 #endif
 114
 115         mcf_disableall();
 116
 117 #if defined(CONFIG_BOOTPARAM)
 118         strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
 119         commandp[size-1] = 0;
 120 #elif defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
 121         /* Copy command line from FLASH to local buffer... */
 122         memcpy(commandp, (char *) 0xf0004000, size);
 123         commandp[size-1] = 0;
 124 #elif defined(CONFIG_MTD_KeyTechnology)
 125         /* Copy command line from FLASH to local buffer... */
 126         memcpy(commandp, (char *) 0xffe06000, size);
 127         commandp[size-1] = 0;
 128 #elif defined(CONFIG_CANCam)
 129         /* Copy command line from FLASH to local buffer... */
 130         memcpy(commandp, (char *) 0xf0010000, size);
 131         commandp[size-1] = 0;
 132 #else
 133         memset(commandp, 0, size);
 134 #endif
 135
 136         mcf_timervector = 69;
 137         mcf_profilevector = 70;
 138         mach_sched_init = coldfire_timer_init;
 139         mach_tick = coldfire_tick;
 140         mach_gettimeoffset = coldfire_timer_offset;
 141         mach_trap_init = coldfire_trap_init;
 142         mach_reset = coldfire_reset;
 143 }
 144
 145 /***************************************************************************/