arch/m68k/platform/coldfire/m528x.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 #if IS_ENABLED(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 /* IS_ENABLED(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, MCFGPIO_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 #ifdef CONFIG_WILDFIRE
  64 void wildfire_halt(void)
  65 {
  66         writeb(0, 0x30000007);
  67         writeb(0x2, 0x30000007);
  68 }
  69 #endif
  70
  71 #ifdef CONFIG_WILDFIREMOD
  72 void wildfiremod_halt(void)
  73 {
  74         printk(KERN_INFO "WildFireMod hibernating...\n");
  75
  76         /* Set portE.5 to Digital IO */
  77         MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
  78
  79         /* Make portE.5 an output */
  80         MCF5282_GPIO_DDRE |= (1 << 5);
  81
  82         /* Now toggle portE.5 from low to high */
  83         MCF5282_GPIO_PORTE &= ~(1 << 5);
  84         MCF5282_GPIO_PORTE |= (1 << 5);
  85
  86         printk(KERN_EMERG "Failed to hibernate. Halting!\n");
  87 }
  88 #endif
  89
  90 void __init config_BSP(char *commandp, int size)
  91 {
  92 #ifdef CONFIG_WILDFIRE
  93         mach_halt = wildfire_halt;
  94 #endif
  95 #ifdef CONFIG_WILDFIREMOD
  96         mach_halt = wildfiremod_halt;
  97 #endif
  98         mach_sched_init = hw_timer_init;
  99         m528x_uarts_init();
 100         m528x_fec_init();
 101 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 102         m528x_qspi_init();
 103 #endif
 104 }
 105
 106 /***************************************************************************/