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hw/microblaze: Add endianness property to the petalogix_s3adsp1800 machine

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Since the microblaze target can now handle both endianness, big and
little, we should provide a config knob for the user to select the
desired endianness.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20250515132019.569365-2-thuth@redhat.com>
This commit is contained in:
Thomas Huth 2025-05-15 15:20:16 +02:00
parent 9f7cf938ef
commit 141ec228de
1 changed files with 37 additions and 5 deletions
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42
hw/microblaze/petalogix_s3adsp1800_mmu.c
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@ -58,9 +58,20 @@
#define TYPE_PETALOGIX_S3ADSP1800_MACHINE \
MACHINE_TYPE_NAME("petalogix-s3adsp1800")
struct S3Adsp1800MachineState {
MachineState parent_class;
EndianMode endianness;
};
OBJECT_DECLARE_TYPE(S3Adsp1800MachineState, MachineClass,
PETALOGIX_S3ADSP1800_MACHINE)
static void
petalogix_s3adsp1800_init(MachineState *machine)
{
S3Adsp1800MachineState *psms = PETALOGIX_S3ADSP1800_MACHINE(machine);
ram_addr_t ram_size = machine->ram_size;
DeviceState *dev;
MicroBlazeCPU *cpu;
@ -71,13 +82,12 @@ petalogix_s3adsp1800_init(MachineState *machine)
MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
qemu_irq irq[32];
MemoryRegion *sysmem = get_system_memory();
EndianMode endianness = TARGET_BIG_ENDIAN ? ENDIAN_MODE_BIG
: ENDIAN_MODE_LITTLE;
EndianMode endianness = psms->endianness;
cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
object_property_set_str(OBJECT(cpu), "version", "7.10.d", &error_abort);
object_property_set_bool(OBJECT(cpu), "little-endian",
!TARGET_BIG_ENDIAN, &error_abort);
endianness == ENDIAN_MODE_LITTLE, &error_abort);
qdev_realize(DEVICE(cpu), NULL, &error_abort);
/* Attach emulated BRAM through the LMB. */
@ -135,20 +145,41 @@ petalogix_s3adsp1800_init(MachineState *machine)
create_unimplemented_device("xps_gpio", GPIO_BASEADDR, 0x10000);
microblaze_load_kernel(cpu, !TARGET_BIG_ENDIAN, ddr_base, ram_size,
machine->initrd_filename,
microblaze_load_kernel(cpu, endianness == ENDIAN_MODE_LITTLE, ddr_base,
ram_size, machine->initrd_filename,
BINARY_DEVICE_TREE_FILE,
NULL);
}
static int machine_get_endianness(Object *obj, Error **errp G_GNUC_UNUSED)
{
S3Adsp1800MachineState *ms = PETALOGIX_S3ADSP1800_MACHINE(obj);
return ms->endianness;
}
static void machine_set_endianness(Object *obj, int endianness, Error **errp)
{
S3Adsp1800MachineState *ms = PETALOGIX_S3ADSP1800_MACHINE(obj);
ms->endianness = endianness;
}
static void petalogix_s3adsp1800_machine_class_init(ObjectClass *oc,
const void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
ObjectProperty *prop;
mc->desc = "PetaLogix linux refdesign for xilinx Spartan 3ADSP1800";
mc->init = petalogix_s3adsp1800_init;
mc->is_default = true;
prop = object_class_property_add_enum(oc, "endianness", "EndianMode",
&EndianMode_lookup,
machine_get_endianness,
machine_set_endianness);
object_property_set_default_str(prop, TARGET_BIG_ENDIAN ? "big" : "little");
object_class_property_set_description(oc, "endianness",
"Defines whether the machine runs in big or little endian mode");
}
static const TypeInfo petalogix_s3adsp1800_machine_types[] = {
@ -156,6 +187,7 @@ static const TypeInfo petalogix_s3adsp1800_machine_types[] = {
.name = TYPE_PETALOGIX_S3ADSP1800_MACHINE,
.parent = TYPE_MACHINE,
.class_init = petalogix_s3adsp1800_machine_class_init,
.instance_size = sizeof(S3Adsp1800MachineState),
},
};