arch/m68knommu/platform/5249/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5249/config.c
   5  *
   6  *      Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
   7  */
   8
   9 /***************************************************************************/
  10
  11 #include <linux/kernel.h>
  12 #include <linux/param.h>
  13 #include <linux/init.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/io.h>
  16 #include <asm/machdep.h>
  17 #include <asm/coldfire.h>
  18 #include <asm/mcfsim.h>
  19 #include <asm/mcfuart.h>
  20
  21 /***************************************************************************/
  22
  23 void coldfire_reset(void);
  24
  25 /***************************************************************************/
  26
  27 static struct mcf_platform_uart m5249_uart_platform[] = {
  28         {
  29                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  30                 .irq            = 73,
  31         },
  32         {
  33                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  34                 .irq            = 74,
  35         }
  36 };
  37
  38 static struct platform_device m5249_uart = {
  39         .name                   = "mcfuart",
  40         .id                     = 0,
  41         .dev.platform_data      = m5249_uart_platform,
  42 };
  43
  44 static struct platform_device *m5249_devices[] __initdata = {
  45         &m5249_uart,
  46 };
  47
  48 /***************************************************************************/
  49
  50 static void __init m5249_uart_init_line(int line, int irq)
  51 {
  52         if (line == 0) {
  53                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
  54                 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
  55                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
  56         } else if (line == 1) {
  57                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
  58                 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
  59                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
  60         }
  61 }
  62
  63 static void __init m5249_uarts_init(void)
  64 {
  65         const int nrlines = ARRAY_SIZE(m5249_uart_platform);
  66         int line;
  67
  68         for (line = 0; (line < nrlines); line++)
  69                 m5249_uart_init_line(line, m5249_uart_platform[line].irq);
  70 }
  71
  72
  73 /***************************************************************************/
  74
  75 void mcf_autovector(unsigned int vec)
  76 {
  77         volatile unsigned char  *mbar;
  78
  79         if ((vec >= 25) && (vec <= 31)) {
  80                 mbar = (volatile unsigned char *) MCF_MBAR;
  81                 vec = 0x1 << (vec - 24);
  82                 *(mbar + MCFSIM_AVR) |= vec;
  83                 mcf_setimr(mcf_getimr() & ~vec);
  84         }
  85 }
  86
  87 /***************************************************************************/
  88
  89 void mcf_settimericr(unsigned int timer, unsigned int level)
  90 {
  91         volatile unsigned char *icrp;
  92         unsigned int icr, imr;
  93
  94         if (timer <= 2) {
  95                 switch (timer) {
  96                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
  97                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
  98                 }
  99
 100                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
 101                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
 102                 mcf_setimr(mcf_getimr() & ~imr);
 103         }
 104 }
 105
 106 /***************************************************************************/
 107
 108 void __init config_BSP(char *commandp, int size)
 109 {
 110         mcf_setimr(MCFSIM_IMR_MASKALL);
 111         mach_reset = coldfire_reset;
 112 }
 113
 114 /***************************************************************************/
 115
 116 static int __init init_BSP(void)
 117 {
 118         m5249_uarts_init();
 119         platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
 120         return 0;
 121 }
 122
 123 arch_initcall(init_BSP);
 124
 125 /***************************************************************************/