arch/m68k/platform/523x/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/523x/config.c
   5  *
   6  *      Sub-architcture dependent initialization code for the Freescale
   7  *      523x CPUs.
   8  *
   9  *      Copyright (C) 1999-2005, 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/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 #ifdef CONFIG_SPI_COLDFIRE_QSPI
  27
  28 static void __init m523x_qspi_init(void)
  29 {
  30         u16 par;
  31
  32         /* setup QSPS pins for QSPI with gpio CS control */
  33         writeb(0x1f, MCFGPIO_PAR_QSPI);
  34         /* and CS2 & CS3 as gpio */
  35         par = readw(MCFGPIO_PAR_TIMER);
  36         par &= 0x3f3f;
  37         writew(par, MCFGPIO_PAR_TIMER);
  38 }
  39
  40 #endif /* CONFIG_SPI_COLDFIRE_QSPI */
  41
  42 /***************************************************************************/
  43
  44 static void __init m523x_fec_init(void)
  45 {
  46         u16 par;
  47         u8 v;
  48
  49         /* Set multi-function pins to ethernet use */
  50         par = readw(MCF_IPSBAR + 0x100082);
  51         writew(par | 0xf00, MCF_IPSBAR + 0x100082);
  52         v = readb(MCF_IPSBAR + 0x100078);
  53         writeb(v | 0xc0, MCF_IPSBAR + 0x100078);
  54 }
  55
  56 /***************************************************************************/
  57
  58 static void m523x_cpu_reset(void)
  59 {
  60         local_irq_disable();
  61         __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
  62 }
  63
  64 /***************************************************************************/
  65
  66 void __init config_BSP(char *commandp, int size)
  67 {
  68         mach_reset = m523x_cpu_reset;
  69         mach_sched_init = hw_timer_init;
  70 }
  71
  72 /***************************************************************************/
  73
  74 static int __init init_BSP(void)
  75 {
  76 #ifdef CONFIG_SPI_COLDFIRE_QSPI
  77         m523x_qspi_init();
  78 #endif
  79         return 0;
  80 }
  81
  82 arch_initcall(init_BSP);
  83
  84 /***************************************************************************/