arch/m68k/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 <linux/phy.h>
  17 #include <linux/phy_fixed.h>
  18 #include <asm/machdep.h>
  19 #include <asm/coldfire.h>
  20 #include <asm/mcfsim.h>
  21 #include <asm/mcfuart.h>
  22
  23 /***************************************************************************/
  24
  25 /*
  26  *      Some platforms need software versions of the GPIO data registers.
  27  */
  28 unsigned short ppdata;
  29 unsigned char ledbank = 0xff;
  30
  31 /***************************************************************************/
  32
  33 static struct mcf_platform_uart m5272_uart_platform[] = {
  34         {
  35                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  36                 .irq            = MCF_IRQ_UART1,
  37         },
  38         {
  39                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  40                 .irq            = MCF_IRQ_UART2,
  41         },
  42         { },
  43 };
  44
  45 static struct platform_device m5272_uart = {
  46         .name                   = "mcfuart",
  47         .id                     = 0,
  48         .dev.platform_data      = m5272_uart_platform,
  49 };
  50
  51 static struct resource m5272_fec_resources[] = {
  52         {
  53                 .start          = MCF_MBAR + 0x840,
  54                 .end            = MCF_MBAR + 0x840 + 0x1cf,
  55                 .flags          = IORESOURCE_MEM,
  56         },
  57         {
  58                 .start          = MCF_IRQ_ERX,
  59                 .end            = MCF_IRQ_ERX,
  60                 .flags          = IORESOURCE_IRQ,
  61         },
  62         {
  63                 .start          = MCF_IRQ_ETX,
  64                 .end            = MCF_IRQ_ETX,
  65                 .flags          = IORESOURCE_IRQ,
  66         },
  67         {
  68                 .start          = MCF_IRQ_ENTC,
  69                 .end            = MCF_IRQ_ENTC,
  70                 .flags          = IORESOURCE_IRQ,
  71         },
  72 };
  73
  74 static struct platform_device m5272_fec = {
  75         .name                   = "fec",
  76         .id                     = 0,
  77         .num_resources          = ARRAY_SIZE(m5272_fec_resources),
  78         .resource               = m5272_fec_resources,
  79 };
  80
  81 static struct platform_device *m5272_devices[] __initdata = {
  82         &m5272_uart,
  83         &m5272_fec,
  84 };
  85
  86 /***************************************************************************/
  87
  88 static void __init m5272_uart_init_line(int line, int irq)
  89 {
  90         u32 v;
  91
  92         if ((line >= 0) && (line < 2)) {
  93                 /* Enable the output lines for the serial ports */
  94                 v = readl(MCF_MBAR + MCFSIM_PBCNT);
  95                 v = (v & ~0x000000ff) | 0x00000055;
  96                 writel(v, MCF_MBAR + MCFSIM_PBCNT);
  97
  98                 v = readl(MCF_MBAR + MCFSIM_PDCNT);
  99                 v = (v & ~0x000003fc) | 0x000002a8;
 100                 writel(v, MCF_MBAR + MCFSIM_PDCNT);
 101         }
 102 }
 103
 104 static void __init m5272_uarts_init(void)
 105 {
 106         const int nrlines = ARRAY_SIZE(m5272_uart_platform);
 107         int line;
 108
 109         for (line = 0; (line < nrlines); line++)
 110                 m5272_uart_init_line(line, m5272_uart_platform[line].irq);
 111 }
 112
 113 /***************************************************************************/
 114
 115 static void m5272_cpu_reset(void)
 116 {
 117         local_irq_disable();
 118         /* Set watchdog to reset, and enabled */
 119         __raw_writew(0, MCF_MBAR + MCFSIM_WIRR);
 120         __raw_writew(1, MCF_MBAR + MCFSIM_WRRR);
 121         __raw_writew(0, MCF_MBAR + MCFSIM_WCR);
 122         for (;;)
 123                 /* wait for watchdog to timeout */;
 124 }
 125
 126 /***************************************************************************/
 127
 128 void __init config_BSP(char *commandp, int size)
 129 {
 130 #if defined (CONFIG_MOD5272)
 131         volatile unsigned char  *pivrp;
 132
 133         /* Set base of device vectors to be 64 */
 134         pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
 135         *pivrp = 0x40;
 136 #endif
 137
 138 #if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
 139         /* Copy command line from FLASH to local buffer... */
 140         memcpy(commandp, (char *) 0xf0004000, size);
 141         commandp[size-1] = 0;
 142 #elif defined(CONFIG_CANCam)
 143         /* Copy command line from FLASH to local buffer... */
 144         memcpy(commandp, (char *) 0xf0010000, size);
 145         commandp[size-1] = 0;
 146 #endif
 147
 148         mach_reset = m5272_cpu_reset;
 149 }
 150
 151 /***************************************************************************/
 152
 153 /*
 154  * Some 5272 based boards have the FEC ethernet diectly connected to
 155  * an ethernet switch. In this case we need to use the fixed phy type,
 156  * and we need to declare it early in boot.
 157  */
 158 static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
 159         .link   = 1,
 160         .speed  = 100,
 161         .duplex = 0,
 162 };
 163
 164 /***************************************************************************/
 165
 166 static int __init init_BSP(void)
 167 {
 168         m5272_uarts_init();
 169         fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status);
 170         platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
 171         return 0;
 172 }
 173
 174 arch_initcall(init_BSP);
 175
 176 /***************************************************************************/