2507c12ab0
As stated before, devices can be little, big or native endian. The target endianness is not of their concern, so we need to push things down a level. This patch adds a parameter to cpu_register_io_memory that allows a device to choose its endianness. For now, all devices simply choose native endian, because that's the same behavior as before. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
80 lines
2 KiB
C
80 lines
2 KiB
C
/*
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* ARM RealView Emulation Baseboard Interrupt Controller
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*
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* Copyright (c) 2006-2007 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licenced under the GPL.
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*/
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#include "sysbus.h"
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#define GIC_NIRQ 96
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#define NCPU 1
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/* Only a single "CPU" interface is present. */
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static inline int
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gic_get_current_cpu(void)
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{
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return 0;
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}
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#include "arm_gic.c"
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typedef struct {
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gic_state gic;
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int iomemtype;
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} RealViewGICState;
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static uint32_t realview_gic_cpu_read(void *opaque, target_phys_addr_t offset)
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{
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gic_state *s = (gic_state *)opaque;
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return gic_cpu_read(s, gic_get_current_cpu(), offset);
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}
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static void realview_gic_cpu_write(void *opaque, target_phys_addr_t offset,
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uint32_t value)
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{
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gic_state *s = (gic_state *)opaque;
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gic_cpu_write(s, gic_get_current_cpu(), offset, value);
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}
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static CPUReadMemoryFunc * const realview_gic_cpu_readfn[] = {
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realview_gic_cpu_read,
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realview_gic_cpu_read,
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realview_gic_cpu_read
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};
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static CPUWriteMemoryFunc * const realview_gic_cpu_writefn[] = {
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realview_gic_cpu_write,
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realview_gic_cpu_write,
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realview_gic_cpu_write
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};
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static void realview_gic_map(SysBusDevice *dev, target_phys_addr_t base)
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{
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RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);
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cpu_register_physical_memory(base, 0x1000, s->iomemtype);
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cpu_register_physical_memory(base + 0x1000, 0x1000, s->gic.iomemtype);
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}
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static int realview_gic_init(SysBusDevice *dev)
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{
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RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);
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gic_init(&s->gic);
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s->iomemtype = cpu_register_io_memory(realview_gic_cpu_readfn,
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realview_gic_cpu_writefn, s,
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DEVICE_NATIVE_ENDIAN);
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sysbus_init_mmio_cb(dev, 0x2000, realview_gic_map);
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return 0;
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}
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static void realview_gic_register_devices(void)
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{
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sysbus_register_dev("realview_gic", sizeof(RealViewGICState),
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realview_gic_init);
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}
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device_init(realview_gic_register_devices)
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