arch/m68knommu/platform/5307/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5307/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 #include <asm/mcfwdebug.h>
  22
  23 /***************************************************************************/
  24
  25 void coldfire_reset(void);
  26
  27 extern unsigned int mcf_timervector;
  28 extern unsigned int mcf_profilevector;
  29 extern unsigned int mcf_timerlevel;
  30
  31 /***************************************************************************/
  32
  33 /*
  34  *      Some platforms need software versions of the GPIO data registers.
  35  */
  36 unsigned short ppdata;
  37 unsigned char ledbank = 0xff;
  38
  39 /***************************************************************************/
  40
  41 static struct mcf_platform_uart m5307_uart_platform[] = {
  42         {
  43                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  44                 .irq            = 73,
  45         },
  46         {
  47                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  48                 .irq            = 74,
  49         },
  50         { },
  51 };
  52
  53 static struct platform_device m5307_uart = {
  54         .name                   = "mcfuart",
  55         .id                     = 0,
  56         .dev.platform_data      = m5307_uart_platform,
  57 };
  58
  59 static struct platform_device *m5307_devices[] __initdata = {
  60         &m5307_uart,
  61 };
  62
  63 /***************************************************************************/
  64
  65 static void __init m5307_uart_init_line(int line, int irq)
  66 {
  67         if (line == 0) {
  68                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
  69                 writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
  70                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
  71         } else if (line == 1) {
  72                 writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
  73                 writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
  74                 mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
  75         }
  76 }
  77
  78 static void __init m5307_uarts_init(void)
  79 {
  80         const int nrlines = ARRAY_SIZE(m5307_uart_platform);
  81         int line;
  82
  83         for (line = 0; (line < nrlines); line++)
  84                 m5307_uart_init_line(line, m5307_uart_platform[line].irq);
  85 }
  86
  87 /***************************************************************************/
  88
  89 void mcf_autovector(unsigned int vec)
  90 {
  91         volatile unsigned char  *mbar;
  92
  93         if ((vec >= 25) && (vec <= 31)) {
  94                 mbar = (volatile unsigned char *) MCF_MBAR;
  95                 vec = 0x1 << (vec - 24);
  96                 *(mbar + MCFSIM_AVR) |= vec;
  97                 mcf_setimr(mcf_getimr() & ~vec);
  98         }
  99 }
 100
 101 /***************************************************************************/
 102
 103 void mcf_settimericr(unsigned int timer, unsigned int level)
 104 {
 105         volatile unsigned char *icrp;
 106         unsigned int icr, imr;
 107
 108         if (timer <= 2) {
 109                 switch (timer) {
 110                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
 111                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
 112                 }
 113
 114                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
 115                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
 116                 mcf_setimr(mcf_getimr() & ~imr);
 117         }
 118 }
 119
 120 /***************************************************************************/
 121
 122 void __init config_BSP(char *commandp, int size)
 123 {
 124         mcf_setimr(MCFSIM_IMR_MASKALL);
 125
 126 #if defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
 127       defined(CONFIG_DISKtel) || defined(CONFIG_SECUREEDGEMP3) || \
 128       defined(CONFIG_CLEOPATRA)
 129         /* Copy command line from FLASH to local buffer... */
 130         memcpy(commandp, (char *) 0xf0004000, size);
 131         commandp[size-1] = 0;
 132         /* Different timer setup - to prevent device clash */
 133         mcf_timervector = 30;
 134         mcf_profilevector = 31;
 135         mcf_timerlevel = 6;
 136 #endif
 137
 138         mach_reset = coldfire_reset;
 139
 140 #ifdef CONFIG_BDM_DISABLE
 141         /*
 142          * Disable the BDM clocking.  This also turns off most of the rest of
 143          * the BDM device.  This is good for EMC reasons. This option is not
 144          * incompatible with the memory protection option.
 145          */
 146         wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
 147 #endif
 148 }
 149
 150 /***************************************************************************/
 151
 152 static int __init init_BSP(void)
 153 {
 154         m5307_uarts_init();
 155         platform_add_devices(m5307_devices, ARRAY_SIZE(m5307_devices));
 156         return 0;
 157 }
 158
 159 arch_initcall(init_BSP);
 160
 161 /***************************************************************************/