arch/m68knommu/platform/5272/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5272/config.c
   5  *
   6  *      Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
   7  *      Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
   8  */
   9
  10 /***************************************************************************/
  11
  12 #include <linux/kernel.h>
  13 #include <linux/param.h>
  14 #include <linux/init.h>
  15 #include <linux/io.h>
  16 #include <asm/machdep.h>
  17 #include <asm/coldfire.h>
  18 #include <asm/mcfsim.h>
  19 #include <asm/mcfuart.h>
  20
  21 /***************************************************************************/
  22
  23 /*
  24  *      Some platforms need software versions of the GPIO data registers.
  25  */
  26 unsigned short ppdata;
  27 unsigned char ledbank = 0xff;
  28
  29 /***************************************************************************/
  30
  31 static struct mcf_platform_uart m5272_uart_platform[] = {
  32         {
  33                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  34                 .irq            = MCF_IRQ_UART1,
  35         },
  36         {
  37                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  38                 .irq            = MCF_IRQ_UART2,
  39         },
  40         { },
  41 };
  42
  43 static struct platform_device m5272_uart = {
  44         .name                   = "mcfuart",
  45         .id                     = 0,
  46         .dev.platform_data      = m5272_uart_platform,
  47 };
  48
  49 static struct resource m5272_fec_resources[] = {
  50         {
  51                 .start          = MCF_MBAR + 0x840,
  52                 .end            = MCF_MBAR + 0x840 + 0x1cf,
  53                 .flags          = IORESOURCE_MEM,
  54         },
  55         {
  56                 .start          = MCF_IRQ_ERX,
  57                 .end            = MCF_IRQ_ERX,
  58                 .flags          = IORESOURCE_IRQ,
  59         },
  60         {
  61                 .start          = MCF_IRQ_ETX,
  62                 .end            = MCF_IRQ_ETX,
  63                 .flags          = IORESOURCE_IRQ,
  64         },
  65         {
  66                 .start          = MCF_IRQ_ENTC,
  67                 .end            = MCF_IRQ_ENTC,
  68                 .flags          = IORESOURCE_IRQ,
  69         },
  70 };
  71
  72 static struct platform_device m5272_fec = {
  73         .name                   = "fec",
  74         .id                     = 0,
  75         .num_resources          = ARRAY_SIZE(m5272_fec_resources),
  76         .resource               = m5272_fec_resources,
  77 };
  78
  79 static struct platform_device *m5272_devices[] __initdata = {
  80         &m5272_uart,
  81         &m5272_fec,
  82 };
  83
  84 /***************************************************************************/
  85
  86 static void __init m5272_uart_init_line(int line, int irq)
  87 {
  88         u32 v;
  89
  90         if ((line >= 0) && (line < 2)) {
  91                 /* Enable the output lines for the serial ports */
  92                 v = readl(MCF_MBAR + MCFSIM_PBCNT);
  93                 v = (v & ~0x000000ff) | 0x00000055;
  94                 writel(v, MCF_MBAR + MCFSIM_PBCNT);
  95
  96                 v = readl(MCF_MBAR + MCFSIM_PDCNT);
  97                 v = (v & ~0x000003fc) | 0x000002a8;
  98                 writel(v, MCF_MBAR + MCFSIM_PDCNT);
  99         }
 100 }
 101
 102 static void __init m5272_uarts_init(void)
 103 {
 104         const int nrlines = ARRAY_SIZE(m5272_uart_platform);
 105         int line;
 106
 107         for (line = 0; (line < nrlines); line++)
 108                 m5272_uart_init_line(line, m5272_uart_platform[line].irq);
 109 }
 110
 111 /***************************************************************************/
 112
 113 static void m5272_cpu_reset(void)
 114 {
 115         local_irq_disable();
 116         /* Set watchdog to reset, and enabled */
 117         __raw_writew(0, MCF_MBAR + MCFSIM_WIRR);
 118         __raw_writew(1, MCF_MBAR + MCFSIM_WRRR);
 119         __raw_writew(0, MCF_MBAR + MCFSIM_WCR);
 120         for (;;)
 121                 /* wait for watchdog to timeout */;
 122 }
 123
 124 /***************************************************************************/
 125
 126 void __init config_BSP(char *commandp, int size)
 127 {
 128 #if defined (CONFIG_MOD5272)
 129         volatile unsigned char  *pivrp;
 130
 131         /* Set base of device vectors to be 64 */
 132         pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
 133         *pivrp = 0x40;
 134 #endif
 135
 136 #if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
 137         /* Copy command line from FLASH to local buffer... */
 138         memcpy(commandp, (char *) 0xf0004000, size);
 139         commandp[size-1] = 0;
 140 #elif defined(CONFIG_CANCam)
 141         /* Copy command line from FLASH to local buffer... */
 142         memcpy(commandp, (char *) 0xf0010000, size);
 143         commandp[size-1] = 0;
 144 #endif
 145
 146         mach_reset = m5272_cpu_reset;
 147 }
 148
 149 /***************************************************************************/
 150
 151 static int __init init_BSP(void)
 152 {
 153         m5272_uarts_init();
 154         platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
 155         return 0;
 156 }
 157
 158 arch_initcall(init_BSP);
 159
 160 /***************************************************************************/