arch/m68knommu/platform/527x/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/527x/config.c
   5  *
   6  *      Sub-architcture dependant initialization code for the Freescale
   7  *      5270/5271 CPUs.
   8  *
   9  *      Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com)
  10  *      Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com)
  11  */
  12
  13 /***************************************************************************/
  14
  15 #include <linux/kernel.h>
  16 #include <linux/param.h>
  17 #include <linux/init.h>
  18 #include <linux/io.h>
  19 #include <asm/machdep.h>
  20 #include <asm/coldfire.h>
  21 #include <asm/mcfsim.h>
  22 #include <asm/mcfuart.h>
  23
  24 /***************************************************************************/
  25
  26 static struct mcf_platform_uart m527x_uart_platform[] = {
  27         {
  28                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  29                 .irq            = MCFINT_VECBASE + MCFINT_UART0,
  30         },
  31         {
  32                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  33                 .irq            = MCFINT_VECBASE + MCFINT_UART1,
  34         },
  35         {
  36                 .mapbase        = MCF_MBAR + MCFUART_BASE3,
  37                 .irq            = MCFINT_VECBASE + MCFINT_UART2,
  38         },
  39         { },
  40 };
  41
  42 static struct platform_device m527x_uart = {
  43         .name                   = "mcfuart",
  44         .id                     = 0,
  45         .dev.platform_data      = m527x_uart_platform,
  46 };
  47
  48 static struct resource m527x_fec0_resources[] = {
  49         {
  50                 .start          = MCF_MBAR + 0x1000,
  51                 .end            = MCF_MBAR + 0x1000 + 0x7ff,
  52                 .flags          = IORESOURCE_MEM,
  53         },
  54         {
  55                 .start          = 64 + 23,
  56                 .end            = 64 + 23,
  57                 .flags          = IORESOURCE_IRQ,
  58         },
  59         {
  60                 .start          = 64 + 27,
  61                 .end            = 64 + 27,
  62                 .flags          = IORESOURCE_IRQ,
  63         },
  64         {
  65                 .start          = 64 + 29,
  66                 .end            = 64 + 29,
  67                 .flags          = IORESOURCE_IRQ,
  68         },
  69 };
  70
  71 static struct resource m527x_fec1_resources[] = {
  72         {
  73                 .start          = MCF_MBAR + 0x1800,
  74                 .end            = MCF_MBAR + 0x1800 + 0x7ff,
  75                 .flags          = IORESOURCE_MEM,
  76         },
  77         {
  78                 .start          = 128 + 23,
  79                 .end            = 128 + 23,
  80                 .flags          = IORESOURCE_IRQ,
  81         },
  82         {
  83                 .start          = 128 + 27,
  84                 .end            = 128 + 27,
  85                 .flags          = IORESOURCE_IRQ,
  86         },
  87         {
  88                 .start          = 128 + 29,
  89                 .end            = 128 + 29,
  90                 .flags          = IORESOURCE_IRQ,
  91         },
  92 };
  93
  94 static struct platform_device m527x_fec[] = {
  95         {
  96                 .name           = "fec",
  97                 .id             = 0,
  98                 .num_resources  = ARRAY_SIZE(m527x_fec0_resources),
  99                 .resource       = m527x_fec0_resources,
 100         },
 101         {
 102                 .name           = "fec",
 103                 .id             = 1,
 104                 .num_resources  = ARRAY_SIZE(m527x_fec1_resources),
 105                 .resource       = m527x_fec1_resources,
 106         },
 107 };
 108
 109 static struct platform_device *m527x_devices[] __initdata = {
 110         &m527x_uart,
 111         &m527x_fec[0],
 112 #ifdef CONFIG_FEC2
 113         &m527x_fec[1],
 114 #endif
 115 };
 116
 117 /***************************************************************************/
 118
 119 static void __init m527x_uart_init_line(int line, int irq)
 120 {
 121         u16 sepmask;
 122
 123         if ((line < 0) || (line > 2))
 124                 return;
 125
 126         /*
 127          * External Pin Mask Setting & Enable External Pin for Interface
 128          */
 129         sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
 130         if (line == 0)
 131                 sepmask |= UART0_ENABLE_MASK;
 132         else if (line == 1)
 133                 sepmask |= UART1_ENABLE_MASK;
 134         else if (line == 2)
 135                 sepmask |= UART2_ENABLE_MASK;
 136         writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART);
 137 }
 138
 139 static void __init m527x_uarts_init(void)
 140 {
 141         const int nrlines = ARRAY_SIZE(m527x_uart_platform);
 142         int line;
 143
 144         for (line = 0; (line < nrlines); line++)
 145                 m527x_uart_init_line(line, m527x_uart_platform[line].irq);
 146 }
 147
 148 /***************************************************************************/
 149
 150 static void __init m527x_fec_init(void)
 151 {
 152         u16 par;
 153         u8 v;
 154
 155         /* Set multi-function pins to ethernet mode for fec0 */
 156 #if defined(CONFIG_M5271)
 157         v = readb(MCF_IPSBAR + 0x100047);
 158         writeb(v | 0xf0, MCF_IPSBAR + 0x100047);
 159 #else
 160         par = readw(MCF_IPSBAR + 0x100082);
 161         writew(par | 0xf00, MCF_IPSBAR + 0x100082);
 162         v = readb(MCF_IPSBAR + 0x100078);
 163         writeb(v | 0xc0, MCF_IPSBAR + 0x100078);
 164 #endif
 165
 166 #ifdef CONFIG_FEC2
 167         /* Set multi-function pins to ethernet mode for fec1 */
 168         par = readw(MCF_IPSBAR + 0x100082);
 169         writew(par | 0xa0, MCF_IPSBAR + 0x100082);
 170         v = readb(MCF_IPSBAR + 0x100079);
 171         writeb(v | 0xc0, MCF_IPSBAR + 0x100079);
 172 #endif
 173 }
 174
 175 /***************************************************************************/
 176
 177 static void m527x_cpu_reset(void)
 178 {
 179         local_irq_disable();
 180         __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
 181 }
 182
 183 /***************************************************************************/
 184
 185 void __init config_BSP(char *commandp, int size)
 186 {
 187         mach_reset = m527x_cpu_reset;
 188         m527x_uarts_init();
 189         m527x_fec_init();
 190 }
 191
 192 /***************************************************************************/
 193
 194 static int __init init_BSP(void)
 195 {
 196         platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices));
 197         return 0;
 198 }
 199
 200 arch_initcall(init_BSP);
 201
 202 /***************************************************************************/