Re: [Qemu-devel] [PATCH v1 3/5] xlnx-zcu102: Specify the valid CPUs

[Eduardo Habkost <ehabkost@redhat.com>]

On Tue, Oct 03, 2017 at 01:05:13PM -0700, Alistair Francis wrote:
> List all possible valid CPU options.
> 
> Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
> ---
> 
>  hw/arm/xlnx-zcu102.c         | 10 ++++++++++
>  hw/arm/xlnx-zynqmp.c         | 16 +++++++++-------
>  include/hw/arm/xlnx-zynqmp.h |  1 +
>  3 files changed, 20 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/arm/xlnx-zcu102.c b/hw/arm/xlnx-zcu102.c
> index 519a16ed98..039649e522 100644
> --- a/hw/arm/xlnx-zcu102.c
> +++ b/hw/arm/xlnx-zcu102.c
> @@ -98,6 +98,8 @@ static void xlnx_zynqmp_init(XlnxZCU102 *s, MachineState *machine)
>      object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
>                                &error_abort);
>  
> +    object_property_set_str(OBJECT(&s->soc), machine->cpu_type, "cpu-type",
> +                            &error_fatal);

Do you have plans to support other CPU types to xlnx_zynqmp in
the future?  If not, I wouldn't bother adding the cpu-type
property and the extra boilerplate code if it's always going to
be set to cortex-a53.


>      object_property_set_link(OBJECT(&s->soc), OBJECT(&s->ddr_ram),
>                           "ddr-ram", &error_abort);
>      object_property_set_bool(OBJECT(&s->soc), s->secure, "secure",
> @@ -160,6 +162,10 @@ static void xlnx_zynqmp_init(XlnxZCU102 *s, MachineState *machine)
>      arm_load_kernel(s->soc.boot_cpu_ptr, &xlnx_zcu102_binfo);
>  }
>  
> +const char *xlnx_zynqmp_valid_cpus[] = { ARM_CPU_TYPE_NAME("cortex-a53"),
> +                                         NULL
> +                                       };
> +
>  static void xlnx_ep108_init(MachineState *machine)
>  {
>      XlnxZCU102 *s = EP108_MACHINE(machine);
> @@ -185,6 +191,8 @@ static void xlnx_ep108_machine_class_init(ObjectClass *oc, void *data)
>      mc->block_default_type = IF_IDE;
>      mc->units_per_default_bus = 1;
>      mc->ignore_memory_transaction_failures = true;
> +    mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a53");
> +    mc->valid_cpu_types = xlnx_zynqmp_valid_cpus;
>  }
>  
>  static const TypeInfo xlnx_ep108_machine_init_typeinfo = {
> @@ -240,6 +248,8 @@ static void xlnx_zcu102_machine_class_init(ObjectClass *oc, void *data)
>      mc->block_default_type = IF_IDE;
>      mc->units_per_default_bus = 1;
>      mc->ignore_memory_transaction_failures = true;
> +    mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a53");
> +    mc->valid_cpu_types = xlnx_zynqmp_valid_cpus;
>  }
>  
>  static const TypeInfo xlnx_zcu102_machine_init_typeinfo = {
> diff --git a/hw/arm/xlnx-zynqmp.c b/hw/arm/xlnx-zynqmp.c
> index 2b27daf51d..1bff099ec1 100644
> --- a/hw/arm/xlnx-zynqmp.c
> +++ b/hw/arm/xlnx-zynqmp.c
> @@ -133,13 +133,6 @@ static void xlnx_zynqmp_init(Object *obj)
>      XlnxZynqMPState *s = XLNX_ZYNQMP(obj);
>      int i;
>  
> -    for (i = 0; i < XLNX_ZYNQMP_NUM_APU_CPUS; i++) {
> -        object_initialize(&s->apu_cpu[i], sizeof(s->apu_cpu[i]),
> -                          "cortex-a53-" TYPE_ARM_CPU);
> -        object_property_add_child(obj, "apu-cpu[*]", OBJECT(&s->apu_cpu[i]),
> -                                  &error_abort);
> -    }
> -
>      object_initialize(&s->gic, sizeof(s->gic), gic_class_name());
>      qdev_set_parent_bus(DEVICE(&s->gic), sysbus_get_default());
>  
> @@ -187,6 +180,14 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
>      qemu_irq gic_spi[GIC_NUM_SPI_INTR];
>      Error *err = NULL;
>  
> +    /* We need to do this here to ensure the cpu_type property is set. */
> +    for (i = 0; i < XLNX_ZYNQMP_NUM_APU_CPUS; i++) {
> +        object_initialize(&s->apu_cpu[i], sizeof(s->apu_cpu[i]),
> +                          s->cpu_type);
> +        object_property_add_child(OBJECT(dev), "apu-cpu[*]", OBJECT(&s->apu_cpu[i]),
> +                                  &error_abort);
> +    }
> +
>      ram_size = memory_region_size(s->ddr_ram);
>  
>      /* Create the DDR Memory Regions. User friendly checks should happen at
> @@ -425,6 +426,7 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
>  }
>  
>  static Property xlnx_zynqmp_props[] = {
> +    DEFINE_PROP_STRING("cpu-type", XlnxZynqMPState, cpu_type),
>      DEFINE_PROP_STRING("boot-cpu", XlnxZynqMPState, boot_cpu),
>      DEFINE_PROP_BOOL("secure", XlnxZynqMPState, secure, false),
>      DEFINE_PROP_BOOL("virtualization", XlnxZynqMPState, virt, false),
> diff --git a/include/hw/arm/xlnx-zynqmp.h b/include/hw/arm/xlnx-zynqmp.h
> index 6eff81a995..5afb8de11e 100644
> --- a/include/hw/arm/xlnx-zynqmp.h
> +++ b/include/hw/arm/xlnx-zynqmp.h
> @@ -86,6 +86,7 @@ typedef struct XlnxZynqMPState {
>      XlnxDPState dp;
>      XlnxDPDMAState dpdma;
>  
> +    char *cpu_type;
>      char *boot_cpu;
>      ARMCPU *boot_cpu_ptr;
>  
> -- 
> 2.11.0
> 

-- 
Eduardo