arch/m68k/platform/coldfire/m523x.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
  23 /***************************************************************************/
  24
  25 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
  26
  27 static void __init m523x_qspi_init(void)
  28 {
  29         u16 par;
  30
  31         /* setup QSPS pins for QSPI with gpio CS control */
  32         writeb(0x1f, MCFGPIO_PAR_QSPI);
  33         /* and CS2 & CS3 as gpio */
  34         par = readw(MCFGPIO_PAR_TIMER);
  35         par &= 0x3f3f;
  36         writew(par, MCFGPIO_PAR_TIMER);
  37 }
  38
  39 #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
  40
  41 /***************************************************************************/
  42
  43 static void __init m523x_fec_init(void)
  44 {
  45         u16 par;
  46         u8 v;
  47
  48         /* Set multi-function pins to ethernet use */
  49         par = readw(MCF_IPSBAR + 0x100082);
  50         writew(par | 0xf00, MCF_IPSBAR + 0x100082);
  51         v = readb(MCF_IPSBAR + 0x100078);
  52         writeb(v | 0xc0, MCF_IPSBAR + 0x100078);
  53 }
  54
  55 /***************************************************************************/
  56
  57 void __init config_BSP(char *commandp, int size)
  58 {
  59         mach_sched_init = hw_timer_init;
  60         m523x_fec_init();
  61 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
  62         m523x_qspi_init();
  63 #endif
  64 }
  65
  66 /***************************************************************************/