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 #define INTC0   (MCF_MBAR + MCFICM_INTC0)
  85
  86 static void __init m520x_uart_init_line(int line, int irq)
  87 {
  88         u32 imr;
  89         u16 par;
  90         u8 par2;
  91
  92         writeb(0x03, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
  93
  94         imr = readl(INTC0 + MCFINTC_IMRL);
  95         imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
  96         writel(imr, INTC0 + MCFINTC_IMRL);
  97
  98         switch (line) {
  99         case 0:
 100                 par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
 101                 par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
 102                        MCF_GPIO_PAR_UART_PAR_URXD0;
 103                 writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
 104                 break;
 105         case 1:
 106                 par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
 107                 par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
 108                        MCF_GPIO_PAR_UART_PAR_URXD1;
 109                 writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
 110                 break;
 111         case 2:
 112                 par2 = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 113                 par2 &= ~0x0F;
 114                 par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
 115                         MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
 116                 writeb(par2, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 117                 break;
 118         }
 119 }
 120
 121 static void __init m520x_uarts_init(void)
 122 {
 123         const int nrlines = ARRAY_SIZE(m520x_uart_platform);
 124         int line;
 125
 126         for (line = 0; (line < nrlines); line++)
 127                 m520x_uart_init_line(line, m520x_uart_platform[line].irq);
 128 }
 129
 130 /***************************************************************************/
 131
 132 static void __init m520x_fec_init(void)
 133 {
 134         u32 imr;
 135         u8 v;
 136
 137         /* Unmask FEC interrupts at ColdFire interrupt controller */
 138         writeb(0x4, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 36);
 139         writeb(0x4, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 40);
 140         writeb(0x4, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 42);
 141
 142         imr = readl(MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);
 143         imr &= ~0x0001FFF0;
 144         writel(imr, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);
 145
 146         /* Set multi-function pins to ethernet mode */
 147         v = readb(MCF_IPSBAR + MCF_GPIO_PAR_FEC);
 148         writeb(v | 0xf0, MCF_IPSBAR + MCF_GPIO_PAR_FEC);
 149
 150         v = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 151         writeb(v | 0x0f, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
 152 }
 153
 154 /***************************************************************************/
 155
 156 /*
 157  *  Program the vector to be an auto-vectored.
 158  */
 159
 160 void mcf_autovector(unsigned int vec)
 161 {
 162     /* Everything is auto-vectored on the 520x devices */
 163 }
 164
 165 /***************************************************************************/
 166
 167 static void m520x_cpu_reset(void)
 168 {
 169         local_irq_disable();
 170         __raw_writeb(MCF_RCR_SWRESET, MCF_RCR);
 171 }
 172
 173 /***************************************************************************/
 174
 175 void __init config_BSP(char *commandp, int size)
 176 {
 177         mach_reset = m520x_cpu_reset;
 178         m520x_uarts_init();
 179         m520x_fec_init();
 180 }
 181
 182 /***************************************************************************/
 183
 184 static int __init init_BSP(void)
 185 {
 186         platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices));
 187         return 0;
 188 }
 189
 190 arch_initcall(init_BSP);
 191
 192 /***************************************************************************/