m528x.c

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/***************************************************************************/

/*
 *  linux/arch/m68knommu/platform/528x/config.c
 *
 *  Sub-architcture dependent initialization code for the Freescale
 *  5280, 5281 and 5282 CPUs.
 *
 *  Copyright (C) 1999-2003, Greg Ungerer ([email protected])
 *  Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>

/***************************************************************************/

#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)

static void __init m528x_qspi_init(void)
{
    /* setup Port QS for QSPI with gpio CS control */
    __raw_writeb(0x07, MCFGPIO_PQSPAR);
}

#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */

/***************************************************************************/

static void __init m528x_uarts_init(void)
{
    u8 port;

    /* make sure PUAPAR is set for UART0 and UART1 */
    port = readb(MCF5282_GPIO_PUAPAR);
    port |= 0x03 | (0x03 << 2);
    writeb(port, MCFGPIO_PUAPAR);
}

/***************************************************************************/

static void __init m528x_fec_init(void)
{
    u16 v16;

    /* Set multi-function pins to ethernet mode for fec0 */
    v16 = readw(MCFGPIO_PASPAR);
    writew(v16 | 0xf00, MCFGPIO_PASPAR);
    writeb(0xc0, MCFGPIO_PEHLPAR);
}

/***************************************************************************/

#ifdef CONFIG_WILDFIRE
void wildfire_halt(void)
{
    writeb(0, 0x30000007);
    writeb(0x2, 0x30000007);
}
#endif

#ifdef CONFIG_WILDFIREMOD
void wildfiremod_halt(void)
{
    printk(KERN_INFO "WildFireMod hibernating...\n");

    /* Set portE.5 to Digital IO */
    MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));

    /* Make portE.5 an output */
    MCF5282_GPIO_DDRE |= (1 << 5);

    /* Now toggle portE.5 from low to high */
    MCF5282_GPIO_PORTE &= ~(1 << 5);
    MCF5282_GPIO_PORTE |= (1 << 5);

    printk(KERN_EMERG "Failed to hibernate. Halting!\n");
}
#endif

void __init config_BSP(char *commandp, int size)
{
#ifdef CONFIG_WILDFIRE
    mach_halt = wildfire_halt;
#endif
#ifdef CONFIG_WILDFIREMOD
    mach_halt = wildfiremod_halt;
#endif
    mach_sched_init = hw_timer_init;
    m528x_uarts_init();
    m528x_fec_init();
#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
    m528x_qspi_init();
#endif
}

/***************************************************************************/