arch/m68knommu/platform/5206e/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5206e/config.c
   5  *
   6  *      Copyright (C) 1999-2002, 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/io.h>
  15 #include <asm/machdep.h>
  16 #include <asm/coldfire.h>
  17 #include <asm/mcfsim.h>
  18 #include <asm/mcfuart.h>
  19 #include <asm/mcfdma.h>
  20 #include <asm/mcfuart.h>
  21
  22 /***************************************************************************/
  23
  24 static struct mcf_platform_uart m5206e_uart_platform[] = {
  25         {
  26                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  27                 .irq            = 73,
  28         },
  29         {
  30                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  31                 .irq            = 74,
  32         },
  33         { },
  34 };
  35
  36 static struct platform_device m5206e_uart = {
  37         .name                   = "mcfuart",
  38         .id                     = 0,
  39         .dev.platform_data      = m5206e_uart_platform,
  40 };
  41
  42 static struct platform_device *m5206e_devices[] __initdata = {
  43         &m5206e_uart,
  44 };
  45
  46 /***************************************************************************/
  47
  48 static void __init m5206e_uart_init_line(int line, int irq)
  49 {
  50         if (line == 0) {
  51                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
  52                 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
  53                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
  54         } else if (line == 1) {
  55                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
  56                 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
  57                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
  58         }
  59 }
  60
  61 static void __init m5206e_uarts_init(void)
  62 {
  63         const int nrlines = ARRAY_SIZE(m5206e_uart_platform);
  64         int line;
  65
  66         for (line = 0; (line < nrlines); line++)
  67                 m5206e_uart_init_line(line, m5206e_uart_platform[line].irq);
  68 }
  69
  70 /***************************************************************************/
  71
  72 void mcf_settimericr(unsigned int timer, unsigned int level)
  73 {
  74         volatile unsigned char *icrp;
  75         unsigned int icr, imr;
  76
  77         if (timer <= 2) {
  78                 switch (timer) {
  79                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
  80                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
  81                 }
  82
  83                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
  84                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
  85                 mcf_setimr(mcf_getimr() & ~imr);
  86         }
  87 }
  88
  89 /***************************************************************************/
  90
  91 void m5206e_cpu_reset(void)
  92 {
  93         local_irq_disable();
  94         /* Set watchdog to soft reset, and enabled */
  95         __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR);
  96         for (;;)
  97                 /* wait for watchdog to timeout */;
  98 }
  99
 100 /***************************************************************************/
 101
 102 void __init config_BSP(char *commandp, int size)
 103 {
 104         mcf_setimr(MCFSIM_IMR_MASKALL);
 105
 106 #if defined(CONFIG_NETtel)
 107         /* Copy command line from FLASH to local buffer... */
 108         memcpy(commandp, (char *) 0xf0004000, size);
 109         commandp[size-1] = 0;
 110 #endif /* CONFIG_NETtel */
 111
 112         mach_reset = m5206e_cpu_reset;
 113 }
 114
 115 /***************************************************************************/
 116
 117 static int __init init_BSP(void)
 118 {
 119         m5206e_uarts_init();
 120         platform_add_devices(m5206e_devices, ARRAY_SIZE(m5206e_devices));
 121         return 0;
 122 }
 123
 124 arch_initcall(init_BSP);
 125
 126 /***************************************************************************/