arch/m68k/platform/528x/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/528x/config.c
   5  *
   6  *      Sub-architcture dependent initialization code for the Freescale
   7  *      5280, 5281 and 5282 CPUs.
   8  *
   9  *      Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
  10  *      Copyright (C) 2001-2003, 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/platform_device.h>
  19 #include <linux/io.h>
  20 #include <asm/machdep.h>
  21 #include <asm/coldfire.h>
  22 #include <asm/mcfsim.h>
  23 #include <asm/mcfuart.h>
  24
  25 /***************************************************************************/
  26
  27 #ifdef CONFIG_SPI_COLDFIRE_QSPI
  28
  29 static void __init m528x_qspi_init(void)
  30 {
  31         /* setup Port QS for QSPI with gpio CS control */
  32         __raw_writeb(0x07, MCFGPIO_PQSPAR);
  33 }
  34
  35 #endif /* CONFIG_SPI_COLDFIRE_QSPI */
  36
  37 /***************************************************************************/
  38
  39 static void __init m528x_uarts_init(void)
  40 {
  41         u8 port;
  42
  43         /* make sure PUAPAR is set for UART0 and UART1 */
  44         port = readb(MCF5282_GPIO_PUAPAR);
  45         port |= 0x03 | (0x03 << 2);
  46         writeb(port, MCF5282_GPIO_PUAPAR);
  47 }
  48
  49 /***************************************************************************/
  50
  51 static void __init m528x_fec_init(void)
  52 {
  53         u16 v16;
  54
  55         /* Set multi-function pins to ethernet mode for fec0 */
  56         v16 = readw(MCF_IPSBAR + 0x100056);
  57         writew(v16 | 0xf00, MCF_IPSBAR + 0x100056);
  58         writeb(0xc0, MCF_IPSBAR + 0x100058);
  59 }
  60
  61 /***************************************************************************/
  62
  63 static void m528x_cpu_reset(void)
  64 {
  65         local_irq_disable();
  66         __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
  67 }
  68
  69 /***************************************************************************/
  70
  71 #ifdef CONFIG_WILDFIRE
  72 void wildfire_halt(void)
  73 {
  74         writeb(0, 0x30000007);
  75         writeb(0x2, 0x30000007);
  76 }
  77 #endif
  78
  79 #ifdef CONFIG_WILDFIREMOD
  80 void wildfiremod_halt(void)
  81 {
  82         printk(KERN_INFO "WildFireMod hibernating...\n");
  83
  84         /* Set portE.5 to Digital IO */
  85         MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
  86
  87         /* Make portE.5 an output */
  88         MCF5282_GPIO_DDRE |= (1 << 5);
  89
  90         /* Now toggle portE.5 from low to high */
  91         MCF5282_GPIO_PORTE &= ~(1 << 5);
  92         MCF5282_GPIO_PORTE |= (1 << 5);
  93
  94         printk(KERN_EMERG "Failed to hibernate. Halting!\n");
  95 }
  96 #endif
  97
  98 void __init config_BSP(char *commandp, int size)
  99 {
 100 #ifdef CONFIG_WILDFIRE
 101         mach_halt = wildfire_halt;
 102 #endif
 103 #ifdef CONFIG_WILDFIREMOD
 104         mach_halt = wildfiremod_halt;
 105 #endif
 106 }
 107
 108 /***************************************************************************/
 109
 110 static int __init init_BSP(void)
 111 {
 112         mach_reset = m528x_cpu_reset;
 113         mach_sched_init = hw_timer_init;
 114         m528x_uarts_init();
 115         m528x_fec_init();
 116 #ifdef CONFIG_SPI_COLDFIRE_QSPI
 117         m528x_qspi_init();
 118 #endif
 119         return 0;
 120 }
 121
 122 arch_initcall(init_BSP);
 123
 124 /***************************************************************************/