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
  21 /***************************************************************************/
  22
  23 void coldfire_reset(void);
  24
  25 /***************************************************************************/
  26
  27 static struct mcf_platform_uart m5206e_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
  39 static struct platform_device m5206e_uart = {
  40         .name                   = "mcfuart",
  41         .id                     = 0,
  42         .dev.platform_data      = m5206e_uart_platform,
  43 };
  44
  45 static struct platform_device *m5206e_devices[] __initdata = {
  46         &m5206e_uart,
  47 };
  48
  49 /***************************************************************************/
  50
  51 static void __init m5206e_uart_init_line(int line, int irq)
  52 {
  53         if (line == 0) {
  54                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
  55                 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
  56                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
  57         } else if (line == 1) {
  58                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
  59                 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
  60                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
  61         }
  62 }
  63
  64 static void __init m5206e_uarts_init(void)
  65 {
  66         const int nrlines = ARRAY_SIZE(m5206e_uart_platform);
  67         int line;
  68
  69         for (line = 0; (line < nrlines); line++)
  70                 m5206e_uart_init_line(line, m5206e_uart_platform[line].irq);
  71 }
  72
  73 /***************************************************************************/
  74
  75 void mcf_autovector(unsigned int vec)
  76 {
  77         volatile unsigned char  *mbar;
  78         unsigned char           icr;
  79
  80         if ((vec >= 25) && (vec <= 31)) {
  81                 vec -= 25;
  82                 mbar = (volatile unsigned char *) MCF_MBAR;
  83                 icr = MCFSIM_ICR_AUTOVEC | (vec << 3);
  84                 *(mbar + MCFSIM_ICR1 + vec) = icr;
  85                 vec = 0x1 << (vec + 1);
  86                 mcf_setimr(mcf_getimr() & ~vec);
  87         }
  88 }
  89
  90 /***************************************************************************/
  91
  92 void mcf_settimericr(unsigned int timer, unsigned int level)
  93 {
  94         volatile unsigned char *icrp;
  95         unsigned int icr, imr;
  96
  97         if (timer <= 2) {
  98                 switch (timer) {
  99                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
 100                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
 101                 }
 102
 103                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
 104                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
 105                 mcf_setimr(mcf_getimr() & ~imr);
 106         }
 107 }
 108
 109 /***************************************************************************/
 110
 111 void __init config_BSP(char *commandp, int size)
 112 {
 113         mcf_setimr(MCFSIM_IMR_MASKALL);
 114
 115 #if defined(CONFIG_NETtel)
 116         /* Copy command line from FLASH to local buffer... */
 117         memcpy(commandp, (char *) 0xf0004000, size);
 118         commandp[size-1] = 0;
 119 #endif /* CONFIG_NETtel */
 120
 121         mach_reset = coldfire_reset;
 122 }
 123
 124 /***************************************************************************/
 125
 126 static int __init init_BSP(void)
 127 {
 128         m5206e_uarts_init();
 129         platform_add_devices(m5206e_devices, ARRAY_SIZE(m5206e_devices));
 130         return 0;
 131 }
 132
 133 arch_initcall(init_BSP);
 134
 135 /***************************************************************************/