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/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/mcfdma.h>
  20 #include <asm/mcfuart.h>
  21
  22 /***************************************************************************/
  23
  24 void coldfire_reset(void);
  25
  26 /***************************************************************************/
  27
  28 static struct mcf_platform_uart m5206e_uart_platform[] = {
  29         {
  30                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  31                 .irq            = 73,
  32         },
  33         {
  34                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  35                 .irq            = 74,
  36         },
  37         { },
  38 };
  39
  40 static struct platform_device m5206e_uart = {
  41         .name                   = "mcfuart",
  42         .id                     = 0,
  43         .dev.platform_data      = m5206e_uart_platform,
  44 };
  45
  46 static struct platform_device *m5206e_devices[] __initdata = {
  47         &m5206e_uart,
  48 };
  49
  50 /***************************************************************************/
  51
  52 static void __init m5206e_uart_init_line(int line, int irq)
  53 {
  54         if (line == 0) {
  55                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
  56                 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
  57                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
  58         } else if (line == 1) {
  59                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
  60                 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
  61                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
  62         }
  63 }
  64
  65 static void __init m5206e_uarts_init(void)
  66 {
  67         const int nrlines = ARRAY_SIZE(m5206e_uart_platform);
  68         int line;
  69
  70         for (line = 0; (line < nrlines); line++)
  71                 m5206e_uart_init_line(line, m5206e_uart_platform[line].irq);
  72 }
  73
  74 /***************************************************************************/
  75
  76 void mcf_autovector(unsigned int vec)
  77 {
  78         volatile unsigned char  *mbar;
  79         unsigned char           icr;
  80
  81         if ((vec >= 25) && (vec <= 31)) {
  82                 vec -= 25;
  83                 mbar = (volatile unsigned char *) MCF_MBAR;
  84                 icr = MCFSIM_ICR_AUTOVEC | (vec << 3);
  85                 *(mbar + MCFSIM_ICR1 + vec) = icr;
  86                 vec = 0x1 << (vec + 1);
  87                 mcf_setimr(mcf_getimr() & ~vec);
  88         }
  89 }
  90
  91 /***************************************************************************/
  92
  93 void mcf_settimericr(unsigned int timer, unsigned int level)
  94 {
  95         volatile unsigned char *icrp;
  96         unsigned int icr, imr;
  97
  98         if (timer <= 2) {
  99                 switch (timer) {
 100                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
 101                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
 102                 }
 103
 104                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
 105                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
 106                 mcf_setimr(mcf_getimr() & ~imr);
 107         }
 108 }
 109
 110 /***************************************************************************/
 111
 112 void __init config_BSP(char *commandp, int size)
 113 {
 114         mcf_setimr(MCFSIM_IMR_MASKALL);
 115
 116 #if defined(CONFIG_NETtel)
 117         /* Copy command line from FLASH to local buffer... */
 118         memcpy(commandp, (char *) 0xf0004000, size);
 119         commandp[size-1] = 0;
 120 #endif /* CONFIG_NETtel */
 121
 122         mach_reset = coldfire_reset;
 123 }
 124
 125 /***************************************************************************/
 126
 127 static int __init init_BSP(void)
 128 {
 129         m5206e_uarts_init();
 130         platform_add_devices(m5206e_devices, ARRAY_SIZE(m5206e_devices));
 131         return 0;
 132 }
 133
 134 arch_initcall(init_BSP);
 135
 136 /***************************************************************************/