/arch/m68knommu/platform/68328/config.c

  1/*
  2 *  linux/arch/$(ARCH)/platform/$(PLATFORM)/config.c
  3 *
  4 *  Copyright (C) 1993 Hamish Macdonald
  5 *  Copyright (C) 1999 D. Jeff Dionne
  6 *
  7 * This file is subject to the terms and conditions of the GNU General Public
  8 * License.  See the file COPYING in the main directory of this archive
  9 * for more details.
 10 *
 11 * VZ Support/Fixes             Evan Stawnyczy <e@lineo.ca>
 12 */
 13
 14#include <asm/dbg.h>
 15#include <stdarg.h>
 16#include <linux/config.h>
 17#include <linux/types.h>
 18#include <linux/kernel.h>
 19#include <linux/mm.h>
 20#include <linux/tty.h>
 21#include <linux/console.h>
 22#include <linux/interrupt.h>
 23#include <asm/current.h>
 24
 25#include <asm/setup.h>
 26#include <asm/system.h>
 27#include <asm/pgtable.h>
 28#include <asm/irq.h>
 29#include <asm/machdep.h>
 30#include <asm/MC68328.h>
 31
 32
 33void BSP_sched_init(irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
 34{
 35
 36#ifdef CONFIG_XCOPILOT_BUGS
 37  /*
 38   * The only thing I know is that CLK32 is not available on Xcopilot
 39   * I have little idea about what frequency SYSCLK has on Xcopilot. 
 40   * The values for prescaler and compare registers were simply 
 41   * taken from the original source
 42   */
 43
 44  /* Restart mode, Enable int, SYSCLK, Enable timer */
 45  TCTL2 = TCTL_OM | TCTL_IRQEN | TCTL_CLKSOURCE_SYSCLK | TCTL_TEN;
 46  /* Set prescaler */
 47  TPRER2 = 2;
 48  /* Set compare register */
 49  TCMP2 = 0xd7e4;
 50#else
 51  /* Restart mode, Enable int, 32KHz, Enable timer */
 52  TCTL2 = TCTL_OM | TCTL_IRQEN | TCTL_CLKSOURCE_32KHZ | TCTL_TEN;
 53  /* Set prescaler (Divide 32KHz by 32)*/
 54  TPRER2 = 31;
 55  /* Set compare register  32Khz / 32 / 10 = 100 */
 56  TCMP2 = 10;
 57#endif
 58                                                                    
 59  request_irq(TMR2_IRQ_NUM, timer_routine, IRQ_FLG_LOCK, "timer", NULL);
 60}
 61
 62void BSP_tick(void)
 63{
 64  /* Reset Timer2 */
 65  TSTAT2 &= 0;
 66}
 67
 68unsigned long BSP_gettimeoffset (void)
 69{
 70  return 0;
 71}
 72
 73void BSP_gettod (int *yearp, int *monp, int *dayp,
 74		   int *hourp, int *minp, int *secp)
 75{
 76}
 77
 78int BSP_hwclk(int op, struct hwclk_time *t)
 79{
 80  if (!op) {
 81    /* read */
 82  } else {
 83    /* write */
 84  }
 85  return 0;
 86}
 87
 88int BSP_set_clock_mmss (unsigned long nowtime)
 89{
 90#if 0
 91  short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
 92
 93  tod->second1 = real_seconds / 10;
 94  tod->second2 = real_seconds % 10;
 95  tod->minute1 = real_minutes / 10;
 96  tod->minute2 = real_minutes % 10;
 97#endif
 98  return 0;
 99}
100
101void BSP_reset (void)
102{
103  local_irq_disable();
104  asm volatile ("moveal #0x10c00000, %a0;\n\t"
105		"moveb #0, 0xFFFFF300;\n\t"
106		"moveal 0(%a0), %sp;\n\t"
107		"moveal 4(%a0), %a0;\n\t"
108		"jmp (%a0);");
109}
110
111void config_BSP(char *command, int len)
112{
113  printk(KERN_INFO "\n68328 support D. Jeff Dionne <jeff@uclinux.org>\n");
114  printk(KERN_INFO "68328 support Kenneth Albanowski <kjahds@kjshds.com>\n");
115  printk(KERN_INFO "68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n");
116
117  mach_sched_init      = BSP_sched_init;
118  mach_tick            = BSP_tick;
119  mach_gettimeoffset   = BSP_gettimeoffset;
120  mach_gettod          = BSP_gettod;
121  mach_hwclk           = NULL;
122  mach_set_clock_mmss  = NULL;
123  mach_reset           = BSP_reset;
124  *command = '\0';
125}