arch/m68knommu/platform/5407/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5407/config.c
   5  *
   6  *      Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
   7  *      Copyright (C) 2000, Lineo (www.lineo.com)
   8  */
   9
  10 /***************************************************************************/
  11
  12 #include <linux/kernel.h>
  13 #include <linux/param.h>
  14 #include <linux/init.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/io.h>
  17 #include <asm/machdep.h>
  18 #include <asm/coldfire.h>
  19 #include <asm/mcfsim.h>
  20 #include <asm/mcfuart.h>
  21
  22 /***************************************************************************/
  23
  24 void coldfire_reset(void);
  25
  26 extern unsigned int mcf_timervector;
  27 extern unsigned int mcf_profilevector;
  28 extern unsigned int mcf_timerlevel;
  29
  30 /***************************************************************************/
  31
  32 static struct mcf_platform_uart m5407_uart_platform[] = {
  33         {
  34                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  35                 .irq            = 73,
  36         },
  37         {
  38                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  39                 .irq            = 74,
  40         },
  41         { },
  42 };
  43
  44 static struct platform_device m5407_uart = {
  45         .name                   = "mcfuart",
  46         .id                     = 0,
  47         .dev.platform_data      = m5407_uart_platform,
  48 };
  49
  50 static struct platform_device *m5407_devices[] __initdata = {
  51         &m5407_uart,
  52 };
  53
  54 /***************************************************************************/
  55
  56 static void __init m5407_uart_init_line(int line, int irq)
  57 {
  58         if (line == 0) {
  59                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
  60                 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
  61                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
  62         } else if (line == 1) {
  63                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
  64                 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
  65                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
  66         }
  67 }
  68
  69 static void __init m5407_uarts_init(void)
  70 {
  71         const int nrlines = ARRAY_SIZE(m5407_uart_platform);
  72         int line;
  73
  74         for (line = 0; (line < nrlines); line++)
  75                 m5407_uart_init_line(line, m5407_uart_platform[line].irq);
  76 }
  77
  78 /***************************************************************************/
  79
  80 void mcf_autovector(unsigned int vec)
  81 {
  82         volatile unsigned char  *mbar;
  83
  84         if ((vec >= 25) && (vec <= 31)) {
  85                 mbar = (volatile unsigned char *) MCF_MBAR;
  86                 vec = 0x1 << (vec - 24);
  87                 *(mbar + MCFSIM_AVR) |= vec;
  88                 mcf_setimr(mcf_getimr() & ~vec);
  89         }
  90 }
  91
  92 /***************************************************************************/
  93
  94 void mcf_settimericr(unsigned int timer, unsigned int level)
  95 {
  96         volatile unsigned char *icrp;
  97         unsigned int icr, imr;
  98
  99         if (timer <= 2) {
 100                 switch (timer) {
 101                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
 102                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
 103                 }
 104
 105                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
 106                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
 107                 mcf_setimr(mcf_getimr() & ~imr);
 108         }
 109 }
 110
 111 /***************************************************************************/
 112
 113 void __init config_BSP(char *commandp, int size)
 114 {
 115         mcf_setimr(MCFSIM_IMR_MASKALL);
 116
 117 #if defined(CONFIG_CLEOPATRA)
 118         /* Different timer setup - to prevent device clash */
 119         mcf_timervector = 30;
 120         mcf_profilevector = 31;
 121         mcf_timerlevel = 6;
 122 #endif
 123
 124         mach_reset = coldfire_reset;
 125 }
 126
 127 /***************************************************************************/
 128
 129 static int __init init_BSP(void)
 130 {
 131         m5407_uarts_init();
 132         platform_add_devices(m5407_devices, ARRAY_SIZE(m5407_devices));
 133         return 0;
 134 }
 135
 136 arch_initcall(init_BSP);
 137
 138 /***************************************************************************/