Archipelago » qemu

/*

 * ARM RealView Emulation Baseboard Interrupt Controller

 *

 * Copyright (c) 2006-2007 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licenced under the GPL.

 */

#include "sysbus.h"

#define GIC_NIRQ 96

#define NCPU 1

/* Only a single "CPU" interface is present.  */

static inline int

gic_get_current_cpu(void)

{

  return 0;

}

#include "arm_gic.c"

typedef struct {

    gic_state gic;

    int iomemtype;

} RealViewGICState;

static uint32_t realview_gic_cpu_read(void *opaque, target_phys_addr_t offset)

{

    gic_state *s = (gic_state *)opaque;

    return gic_cpu_read(s, gic_get_current_cpu(), offset);

}

static void realview_gic_cpu_write(void *opaque, target_phys_addr_t offset,

                          uint32_t value)

{

    gic_state *s = (gic_state *)opaque;

    gic_cpu_write(s, gic_get_current_cpu(), offset, value);

}

static CPUReadMemoryFunc * const realview_gic_cpu_readfn[] = {

   realview_gic_cpu_read,

   realview_gic_cpu_read,

   realview_gic_cpu_read

};

static CPUWriteMemoryFunc * const realview_gic_cpu_writefn[] = {

   realview_gic_cpu_write,

   realview_gic_cpu_write,

   realview_gic_cpu_write

};

static void realview_gic_map(SysBusDevice *dev, target_phys_addr_t base)

{

    RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);

    cpu_register_physical_memory(base, 0x1000, s->iomemtype);

    cpu_register_physical_memory(base + 0x1000, 0x1000, s->gic.iomemtype);

}

static int realview_gic_init(SysBusDevice *dev)

{

    RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);

    gic_init(&s->gic);

    s->iomemtype = cpu_register_io_memory(realview_gic_cpu_readfn,

                                          realview_gic_cpu_writefn, s);

    sysbus_init_mmio_cb(dev, 0x2000, realview_gic_map);

    return 0;

}

static void realview_gic_register_devices(void)

{

    sysbus_register_dev("realview_gic", sizeof(RealViewGICState),

                        realview_gic_init);

}

device_init(realview_gic_register_devices)