linux/arch/m68knommu/platform/5407/config.c
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   1/***************************************************************************/
   2
   3/*
   4 *      linux/arch/m68knommu/platform/5407/config.c
   5 *
   6 *      Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
   7 *      Copyright (C) 2000, Lineo (www.lineo.com)
   8 */
   9
  10/***************************************************************************/
  11
  12#include <linux/kernel.h>
  13#include <linux/param.h>
  14#include <linux/init.h>
  15#include <linux/io.h>
  16#include <asm/machdep.h>
  17#include <asm/coldfire.h>
  18#include <asm/mcfsim.h>
  19#include <asm/mcfuart.h>
  20
  21/***************************************************************************/
  22
  23static struct mcf_platform_uart m5407_uart_platform[] = {
  24        {
  25                .mapbase        = MCF_MBAR + MCFUART_BASE1,
  26                .irq            = 73,
  27        },
  28        {
  29                .mapbase        = MCF_MBAR + MCFUART_BASE2,
  30                .irq            = 74,
  31        },
  32        { },
  33};
  34
  35static struct platform_device m5407_uart = {
  36        .name                   = "mcfuart",
  37        .id                     = 0,
  38        .dev.platform_data      = m5407_uart_platform,
  39};
  40
  41static struct platform_device *m5407_devices[] __initdata = {
  42        &m5407_uart,
  43};
  44
  45/***************************************************************************/
  46
  47static void __init m5407_uart_init_line(int line, int irq)
  48{
  49        if (line == 0) {
  50                writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
  51                writeb(irq, MCF_MBAR + MCFUART_BASE1 + MCFUART_UIVR);
  52                mcf_mapirq2imr(irq, MCFINTC_UART0);
  53        } else if (line == 1) {
  54                writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
  55                writeb(irq, MCF_MBAR + MCFUART_BASE2 + MCFUART_UIVR);
  56                mcf_mapirq2imr(irq, MCFINTC_UART1);
  57        }
  58}
  59
  60static void __init m5407_uarts_init(void)
  61{
  62        const int nrlines = ARRAY_SIZE(m5407_uart_platform);
  63        int line;
  64
  65        for (line = 0; (line < nrlines); line++)
  66                m5407_uart_init_line(line, m5407_uart_platform[line].irq);
  67}
  68
  69/***************************************************************************/
  70
  71static void __init m5407_timers_init(void)
  72{
  73        /* Timer1 is always used as system timer */
  74        writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3,
  75                MCF_MBAR + MCFSIM_TIMER1ICR);
  76        mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1);
  77
  78#ifdef CONFIG_HIGHPROFILE
  79        /* Timer2 is to be used as a high speed profile timer  */
  80        writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3,
  81                MCF_MBAR + MCFSIM_TIMER2ICR);
  82        mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2);
  83#endif
  84}
  85
  86/***************************************************************************/
  87
  88void m5407_cpu_reset(void)
  89{
  90        local_irq_disable();
  91        /* set watchdog to soft reset, and enabled */
  92        __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR);
  93        for (;;)
  94                /* wait for watchdog to timeout */;
  95}
  96
  97/***************************************************************************/
  98
  99void __init config_BSP(char *commandp, int size)
 100{
 101        mach_reset = m5407_cpu_reset;
 102        m5407_timers_init();
 103        m5407_uarts_init();
 104
 105        /* Only support the external interrupts on their primary level */
 106        mcf_mapirq2imr(25, MCFINTC_EINT1);
 107        mcf_mapirq2imr(27, MCFINTC_EINT3);
 108        mcf_mapirq2imr(29, MCFINTC_EINT5);
 109        mcf_mapirq2imr(31, MCFINTC_EINT7);
 110}
 111
 112/***************************************************************************/
 113
 114static int __init init_BSP(void)
 115{
 116        platform_add_devices(m5407_devices, ARRAY_SIZE(m5407_devices));
 117        return 0;
 118}
 119
 120arch_initcall(init_BSP);
 121
 122/***************************************************************************/
 123