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 #define INTC0   (MCF_MBAR + MCFICM_INTC0)
 120
 121 static void __init m527x_uart_init_line(int line, int irq)
 122 {
 123         u16 sepmask;
 124         u32 imr;
 125
 126         if ((line < 0) || (line > 2))
 127                 return;
 128
 129         /* level 6, line based priority */
 130         writeb(0x30+line, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
 131
 132         imr = readl(INTC0 + MCFINTC_IMRL);
 133         imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
 134         writel(imr, INTC0 + MCFINTC_IMRL);
 135
 136         /*
 137          * External Pin Mask Setting & Enable External Pin for Interface
 138          */
 139         sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
 140         if (line == 0)
 141                 sepmask |= UART0_ENABLE_MASK;
 142         else if (line == 1)
 143                 sepmask |= UART1_ENABLE_MASK;
 144         else if (line == 2)
 145                 sepmask |= UART2_ENABLE_MASK;
 146         writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART);
 147 }
 148
 149 static void __init m527x_uarts_init(void)
 150 {
 151         const int nrlines = ARRAY_SIZE(m527x_uart_platform);
 152         int line;
 153
 154         for (line = 0; (line < nrlines); line++)
 155                 m527x_uart_init_line(line, m527x_uart_platform[line].irq);
 156 }
 157
 158 /***************************************************************************/
 159
 160 static void __init m527x_fec_irq_init(int nr)
 161 {
 162         unsigned long base;
 163         u32 imr;
 164
 165         base = MCF_IPSBAR + (nr ? MCFICM_INTC1 : MCFICM_INTC0);
 166
 167         writeb(0x28, base + MCFINTC_ICR0 + 23);
 168         writeb(0x27, base + MCFINTC_ICR0 + 27);
 169         writeb(0x26, base + MCFINTC_ICR0 + 29);
 170
 171         imr = readl(base + MCFINTC_IMRH);
 172         imr &= ~0xf;
 173         writel(imr, base + MCFINTC_IMRH);
 174         imr = readl(base + MCFINTC_IMRL);
 175         imr &= ~0xff800001;
 176         writel(imr, base + MCFINTC_IMRL);
 177 }
 178
 179 static void __init m527x_fec_init(void)
 180 {
 181         u16 par;
 182         u8 v;
 183
 184         m527x_fec_irq_init(0);
 185
 186         /* Set multi-function pins to ethernet mode for fec0 */
 187 #if defined(CONFIG_M5271)
 188         v = readb(MCF_IPSBAR + 0x100047);
 189         writeb(v | 0xf0, MCF_IPSBAR + 0x100047);
 190 #else
 191         par = readw(MCF_IPSBAR + 0x100082);
 192         writew(par | 0xf00, MCF_IPSBAR + 0x100082);
 193         v = readb(MCF_IPSBAR + 0x100078);
 194         writeb(v | 0xc0, MCF_IPSBAR + 0x100078);
 195 #endif
 196
 197 #ifdef CONFIG_FEC2
 198         m527x_fec_irq_init(1);
 199
 200         /* Set multi-function pins to ethernet mode for fec1 */
 201         par = readw(MCF_IPSBAR + 0x100082);
 202         writew(par | 0xa0, MCF_IPSBAR + 0x100082);
 203         v = readb(MCF_IPSBAR + 0x100079);
 204         writeb(v | 0xc0, MCF_IPSBAR + 0x100079);
 205 #endif
 206 }
 207
 208 /***************************************************************************/
 209
 210 void mcf_disableall(void)
 211 {
 212         *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH)) = 0xffffffff;
 213         *((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL)) = 0xffffffff;
 214 }
 215
 216 /***************************************************************************/
 217
 218 void mcf_autovector(unsigned int vec)
 219 {
 220         /* Everything is auto-vectored on the 5272 */
 221 }
 222
 223 /***************************************************************************/
 224
 225 static void m527x_cpu_reset(void)
 226 {
 227         local_irq_disable();
 228         __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
 229 }
 230
 231 /***************************************************************************/
 232
 233 void __init config_BSP(char *commandp, int size)
 234 {
 235         mcf_disableall();
 236         mach_reset = m527x_cpu_reset;
 237         m527x_uarts_init();
 238         m527x_fec_init();
 239 }
 240
 241 /***************************************************************************/
 242
 243 static int __init init_BSP(void)
 244 {
 245         platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices));
 246         return 0;
 247 }
 248
 249 arch_initcall(init_BSP);
 250
 251 /***************************************************************************/