arch/m68knommu/platform/520x/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *  linux/arch/m68knommu/platform/520x/config.c
   5  *
   6  *  Copyright (C) 2005,      Freescale (www.freescale.com)
   7  *  Copyright (C) 2005,      Intec Automation (mike@steroidmicros.com)
   8  *  Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
   9  *  Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
  10  */
  11
  12 /***************************************************************************/
  13
  14 #include <linux/kernel.h>
  15 #include <linux/param.h>
  16 #include <linux/init.h>
  17 #include <linux/io.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 static struct mcf_platform_uart m520x_uart_platform[] = {
  26         {
  27                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  28                 .irq            = MCFINT_VECBASE + MCFINT_UART0,
  29         },
  30         {
  31                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  32                 .irq            = MCFINT_VECBASE + MCFINT_UART1,
  33         },
  34         {
  35                 .mapbase        = MCF_MBAR + MCFUART_BASE3,
  36                 .irq            = MCFINT_VECBASE + MCFINT_UART2,
  37         },
  38         { },
  39 };
  40
  41 static struct platform_device m520x_uart = {
  42         .name                   = "mcfuart",
  43         .id                     = 0,
  44         .dev.platform_data      = m520x_uart_platform,
  45 };
  46
  47 static struct resource m520x_fec_resources[] = {
  48         {
  49                 .start          = MCF_MBAR + 0x30000,
  50                 .end            = MCF_MBAR + 0x30000 + 0x7ff,
  51                 .flags          = IORESOURCE_MEM,
  52         },
  53         {
  54                 .start          = 64 + 36,
  55                 .end            = 64 + 36,
  56                 .flags          = IORESOURCE_IRQ,
  57         },
  58         {
  59                 .start          = 64 + 40,
  60                 .end            = 64 + 40,
  61                 .flags          = IORESOURCE_IRQ,
  62         },
  63         {
  64                 .start          = 64 + 42,
  65                 .end            = 64 + 42,
  66                 .flags          = IORESOURCE_IRQ,
  67         },
  68 };
  69
  70 static struct platform_device m520x_fec = {
  71         .name                   = "fec",
  72         .id                     = 0,
  73         .num_resources          = ARRAY_SIZE(m520x_fec_resources),
  74         .resource               = m520x_fec_resources,
  75 };
  76
  77 static struct platform_device *m520x_devices[] __initdata = {
  78         &m520x_uart,
  79         &m520x_fec,
  80 };
  81
  82 /***************************************************************************/
  83
  84 static void __init m520x_uart_init_line(int line, int irq)
  85 {
  86         u16 par;
  87         u8 par2;
  88
  89         switch (line) {
  90         case 0:
  91                 par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
  92                 par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
  93                        MCF_GPIO_PAR_UART_PAR_URXD0;
  94                 writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
  95                 break;
  96         case 1:
  97                 par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
  98                 par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
  99                        MCF_GPIO_PAR_UART_PAR_URXD1;
 100                 writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
 101                 break;
 102         case 2:
 103                 par2 = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 104                 par2 &= ~0x0F;
 105                 par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
 106                         MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
 107                 writeb(par2, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 108                 break;
 109         }
 110 }
 111
 112 static void __init m520x_uarts_init(void)
 113 {
 114         const int nrlines = ARRAY_SIZE(m520x_uart_platform);
 115         int line;
 116
 117         for (line = 0; (line < nrlines); line++)
 118                 m520x_uart_init_line(line, m520x_uart_platform[line].irq);
 119 }
 120
 121 /***************************************************************************/
 122
 123 static void __init m520x_fec_init(void)
 124 {
 125         u8 v;
 126
 127         /* Set multi-function pins to ethernet mode */
 128         v = readb(MCF_IPSBAR + MCF_GPIO_PAR_FEC);
 129         writeb(v | 0xf0, MCF_IPSBAR + MCF_GPIO_PAR_FEC);
 130
 131         v = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 132         writeb(v | 0x0f, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 133 }
 134
 135 /***************************************************************************/
 136
 137 static void m520x_cpu_reset(void)
 138 {
 139         local_irq_disable();
 140         __raw_writeb(MCF_RCR_SWRESET, MCF_RCR);
 141 }
 142
 143 /***************************************************************************/
 144
 145 void __init config_BSP(char *commandp, int size)
 146 {
 147         mach_reset = m520x_cpu_reset;
 148         m520x_uarts_init();
 149         m520x_fec_init();
 150 }
 151
 152 /***************************************************************************/
 153
 154 static int __init init_BSP(void)
 155 {
 156         platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices));
 157         return 0;
 158 }
 159
 160 arch_initcall(init_BSP);
 161
 162 /***************************************************************************/