arch/m68knommu/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/interrupt.h>
  16 #include <linux/io.h>
  17 #include <asm/machdep.h>
  18 #include <asm/coldfire.h>
  19 #include <asm/mcfsim.h>
  20 #include <asm/mcfuart.h>
  21
  22 /***************************************************************************/
  23
  24 void coldfire_reset(void);
  25
  26 extern unsigned int mcf_timervector;
  27 extern unsigned int mcf_profilevector;
  28 extern unsigned int mcf_timerlevel;
  29
  30 /***************************************************************************/
  31
  32 /*
  33  *      Some platforms need software versions of the GPIO data registers.
  34  */
  35 unsigned short ppdata;
  36 unsigned char ledbank = 0xff;
  37
  38 /***************************************************************************/
  39
  40 static struct mcf_platform_uart m5272_uart_platform[] = {
  41         {
  42                 .mapbase        = MCF_MBAR + MCFUART_BASE1,
  43                 .irq            = 73,
  44         },
  45         {
  46                 .mapbase        = MCF_MBAR + MCFUART_BASE2,
  47                 .irq            = 74,
  48         },
  49         { },
  50 };
  51
  52 static struct platform_device m5272_uart = {
  53         .name                   = "mcfuart",
  54         .id                     = 0,
  55         .dev.platform_data      = m5272_uart_platform,
  56 };
  57
  58 static struct platform_device *m5272_devices[] __initdata = {
  59         &m5272_uart,
  60 };
  61
  62 /***************************************************************************/
  63
  64 static void __init m5272_uart_init_line(int line, int irq)
  65 {
  66         u32 v;
  67
  68         if ((line >= 0) && (line < 2)) {
  69                 v = (line) ? 0x0e000000 : 0xe0000000;
  70                 writel(v, MCF_MBAR + MCFSIM_ICR2);
  71
  72                 /* Enable the output lines for the serial ports */
  73                 v = readl(MCF_MBAR + MCFSIM_PBCNT);
  74                 v = (v & ~0x000000ff) | 0x00000055;
  75                 writel(v, MCF_MBAR + MCFSIM_PBCNT);
  76
  77                 v = readl(MCF_MBAR + MCFSIM_PDCNT);
  78                 v = (v & ~0x000003fc) | 0x000002a8;
  79                 writel(v, MCF_MBAR + MCFSIM_PDCNT);
  80         }
  81 }
  82
  83 static void __init m5272_uarts_init(void)
  84 {
  85         const int nrlines = ARRAY_SIZE(m5272_uart_platform);
  86         int line;
  87
  88         for (line = 0; (line < nrlines); line++)
  89                 m5272_uart_init_line(line, m5272_uart_platform[line].irq);
  90 }
  91
  92 /***************************************************************************/
  93
  94 void mcf_disableall(void)
  95 {
  96         volatile unsigned long  *icrp;
  97
  98         icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
  99         icrp[0] = 0x88888888;
 100         icrp[1] = 0x88888888;
 101         icrp[2] = 0x88888888;
 102         icrp[3] = 0x88888888;
 103 }
 104
 105 /***************************************************************************/
 106
 107 void mcf_autovector(unsigned int vec)
 108 {
 109         /* Everything is auto-vectored on the 5272 */
 110 }
 111
 112 /***************************************************************************/
 113
 114 void mcf_settimericr(int timer, int level)
 115 {
 116         volatile unsigned long *icrp;
 117
 118         if ((timer >= 1 ) && (timer <= 4)) {
 119                 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
 120                 *icrp = (0x8 | level) << ((4 - timer) * 4);
 121         }
 122 }
 123
 124 /***************************************************************************/
 125
 126 int mcf_timerirqpending(int timer)
 127 {
 128         volatile unsigned long *icrp;
 129
 130         if ((timer >= 1 ) && (timer <= 4)) {
 131                 icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR1);
 132                 return (*icrp & (0x8 << ((4 - timer) * 4)));
 133         }
 134         return 0;
 135 }
 136
 137 /***************************************************************************/
 138
 139 void __init config_BSP(char *commandp, int size)
 140 {
 141 #if defined (CONFIG_MOD5272)
 142         volatile unsigned char  *pivrp;
 143
 144         /* Set base of device vectors to be 64 */
 145         pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR);
 146         *pivrp = 0x40;
 147 #endif
 148
 149         mcf_disableall();
 150
 151 #if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
 152         /* Copy command line from FLASH to local buffer... */
 153         memcpy(commandp, (char *) 0xf0004000, size);
 154         commandp[size-1] = 0;
 155 #elif defined(CONFIG_MTD_KeyTechnology)
 156         /* Copy command line from FLASH to local buffer... */
 157         memcpy(commandp, (char *) 0xffe06000, size);
 158         commandp[size-1] = 0;
 159 #elif defined(CONFIG_CANCam)
 160         /* Copy command line from FLASH to local buffer... */
 161         memcpy(commandp, (char *) 0xf0010000, size);
 162         commandp[size-1] = 0;
 163 #endif
 164
 165         mcf_timervector = 69;
 166         mcf_profilevector = 70;
 167         mach_reset = coldfire_reset;
 168 }
 169
 170 /***************************************************************************/
 171
 172 static int __init init_BSP(void)
 173 {
 174         m5272_uarts_init();
 175         platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
 176         return 0;
 177 }
 178
 179 arch_initcall(init_BSP);
 180
 181 /***************************************************************************/