release/src-rt-6.x/linux/linux-2.6/arch/m68knommu/platform/527x/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/527x/config.c
   5  *
   6  *      Sub-architcture dependant initialization code for the Freescale
   7  *      5270/5271 CPUs.
   8  *
   9  *      Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com)
  10  *      Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com)
  11  */
  12
  13 /***************************************************************************/
  14
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/param.h>
  18 #include <linux/init.h>
  19 #include <linux/interrupt.h>
  20 #include <asm/dma.h>
  21 #include <asm/traps.h>
  22 #include <asm/machdep.h>
  23 #include <asm/coldfire.h>
  24 #include <asm/mcfsim.h>
  25 #include <asm/mcfdma.h>
  26
  27 /***************************************************************************/
  28
  29 void coldfire_pit_tick(void);
  30 void coldfire_pit_init(irq_handler_t handler);
  31 unsigned long coldfire_pit_offset(void);
  32 void coldfire_trap_init(void);
  33 void coldfire_reset(void);
  34
  35 /***************************************************************************/
  36
  37 /*
  38  *      DMA channel base address table.
  39  */
  40 unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
  41         MCF_MBAR + MCFDMA_BASE0,
  42 };
  43
  44 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
  45
  46 /***************************************************************************/
  47
  48 void mcf_disableall(void)
  49 {
  50         *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH)) = 0xffffffff;
  51         *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL)) = 0xffffffff;
  52 }
  53
  54 /***************************************************************************/
  55
  56 void mcf_autovector(unsigned int vec)
  57 {
  58         /* Everything is auto-vectored on the 5272 */
  59 }
  60
  61 /***************************************************************************/
  62
  63 void config_BSP(char *commandp, int size)
  64 {
  65         mcf_disableall();
  66
  67 #ifdef CONFIG_BOOTPARAM
  68         strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
  69         commandp[size-1] = 0;
  70 #else
  71         memset(commandp, 0, size);
  72 #endif
  73
  74         mach_sched_init = coldfire_pit_init;
  75         mach_tick = coldfire_pit_tick;
  76         mach_gettimeoffset = coldfire_pit_offset;
  77         mach_trap_init = coldfire_trap_init;
  78         mach_reset = coldfire_reset;
  79 }
  80
  81 /***************************************************************************/