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 "hw.h"

#include "primecell.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"

static uint32_t realview_gic_cpu_read(void *opaque, target_phys_addr_t offset)

{

    gic_state *s = (gic_state *)opaque;

    offset -= s->base;

    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;

    offset -= s->base;

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

}

static CPUReadMemoryFunc *realview_gic_cpu_readfn[] = {

   realview_gic_cpu_read,

   realview_gic_cpu_read,

   realview_gic_cpu_read

};

static CPUWriteMemoryFunc *realview_gic_cpu_writefn[] = {

   realview_gic_cpu_write,

   realview_gic_cpu_write,

   realview_gic_cpu_write

};

qemu_irq *realview_gic_init(uint32_t base, qemu_irq parent_irq)

{

    gic_state *s;

    int iomemtype;

    s = gic_init(base, &parent_irq);

    if (!s)

        return NULL;

    iomemtype = cpu_register_io_memory(0, realview_gic_cpu_readfn,

                                       realview_gic_cpu_writefn, s);

    cpu_register_physical_memory(base, 0x00001000, iomemtype);

    return s->in;

}