release/src-rt-6.x/linux/linux-2.6/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/kernel.h>
  13 #include <linux/sched.h>
  14 #include <linux/param.h>
  15 #include <linux/init.h>
  16 #include <linux/interrupt.h>
  17 #include <asm/irq.h>
  18 #include <asm/dma.h>
  19 #include <asm/traps.h>
  20 #include <asm/machdep.h>
  21 #include <asm/coldfire.h>
  22 #include <asm/mcftimer.h>
  23 #include <asm/mcfsim.h>
  24 #include <asm/mcfdma.h>
  25
  26 /***************************************************************************/
  27
  28 void coldfire_tick(void);
  29 void coldfire_timer_init(irq_handler_t handler);
  30 unsigned long coldfire_timer_offset(void);
  31 void coldfire_trap_init(void);
  32 void coldfire_reset(void);
  33
  34 extern unsigned int mcf_timervector;
  35 extern unsigned int mcf_profilevector;
  36 extern unsigned int mcf_timerlevel;
  37
  38 /***************************************************************************/
  39
  40 /*
  41  *      Some platforms need software versions of the GPIO data registers.
  42  */
  43 unsigned short ppdata;
  44 unsigned char ledbank = 0xff;
  45
  46 /***************************************************************************/
  47
  48 /*
  49  *      DMA channel base address table.
  50  */
  51 unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
  52         MCF_MBAR + MCFDMA_BASE0,
  53 };
  54
  55 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
  56
  57 /***************************************************************************/
  58
  59 void mcf_disableall(void)
  60 {
  61         volatile unsigned long  *icrp;
  62
  63         icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
  64         icrp[0] = 0x88888888;
  65         icrp[1] = 0x88888888;
  66         icrp[2] = 0x88888888;
  67         icrp[3] = 0x88888888;
  68 }
  69
  70 /***************************************************************************/
  71
  72 void mcf_autovector(unsigned int vec)
  73 {
  74         /* Everything is auto-vectored on the 5272 */
  75 }
  76
  77 /***************************************************************************/
  78
  79 void mcf_settimericr(int timer, int level)
  80 {
  81         volatile unsigned long *icrp;
  82
  83         if ((timer >= 1 ) && (timer <= 4)) {
  84                 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
  85                 *icrp = (0x8 | level) << ((4 - timer) * 4);
  86         }
  87 }
  88
  89 /***************************************************************************/
  90
  91 int mcf_timerirqpending(int timer)
  92 {
  93         volatile unsigned long *icrp;
  94
  95         if ((timer >= 1 ) && (timer <= 4)) {
  96                 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
  97                 return (*icrp & (0x8 << ((4 - timer) * 4)));
  98         }
  99         return 0;
 100 }
 101
 102 /***************************************************************************/
 103
 104 void config_BSP(char *commandp, int size)
 105 {
 106 #if defined (CONFIG_MOD5272)
 107         volatile unsigned char  *pivrp;
 108
 109         /* Set base of device vectors to be 64 */
 110         pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
 111         *pivrp = 0x40;
 112 #endif
 113
 114         mcf_disableall();
 115
 116 #if defined(CONFIG_BOOTPARAM)
 117         strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
 118         commandp[size-1] = 0;
 119 #elif defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
 120         /* Copy command line from FLASH to local buffer... */
 121         memcpy(commandp, (char *) 0xf0004000, size);
 122         commandp[size-1] = 0;
 123 #elif defined(CONFIG_MTD_KeyTechnology)
 124         /* Copy command line from FLASH to local buffer... */
 125         memcpy(commandp, (char *) 0xffe06000, size);
 126         commandp[size-1] = 0;
 127 #elif defined(CONFIG_CANCam)
 128         /* Copy command line from FLASH to local buffer... */
 129         memcpy(commandp, (char *) 0xf0010000, size);
 130         commandp[size-1] = 0;
 131 #else
 132         memset(commandp, 0, size);
 133 #endif
 134
 135         mcf_timervector = 69;
 136         mcf_profilevector = 70;
 137         mach_sched_init = coldfire_timer_init;
 138         mach_tick = coldfire_tick;
 139         mach_gettimeoffset = coldfire_timer_offset;
 140         mach_trap_init = coldfire_trap_init;
 141         mach_reset = coldfire_reset;
 142 }
 143
 144 /***************************************************************************/