Re: [Qemu-devel] [PATCH v7 1/6] hw/arm: add very initial support for Canon DIGIC SoC

[Peter Crosthwaite]

On Fri, Dec 13, 2013 at 8:23 AM, Antony Pavlov <address@hidden> wrote:
> DIGIC is Canon Inc.'s name for a family of SoC
> for digital cameras and camcorders.
>
> There is no publicly available specification for
> DIGIC chips. All information about DIGIC chip
> internals is based on reverse engineering efforts
> made by CHDK (http://chdk.wikia.com) and
> Magic Lantern (http://www.magiclantern.fm) projects
> contributors.
>
> Signed-off-by: Antony Pavlov <address@hidden>
> Reviewed-by: Andreas Färber <address@hidden>
> Reviewed-by: Peter Maydell <address@hidden>

Reviewed-by: Peter Crosthwaite <address@hidden>

> ---
>  default-configs/arm-softmmu.mak |  1 +
>  hw/arm/Makefile.objs            |  1 +
>  hw/arm/digic.c                  | 71 
> +++++++++++++++++++++++++++++++++++++++++
>  include/hw/arm/digic.h          | 35 ++++++++++++++++++++
>  4 files changed, 108 insertions(+)
>  create mode 100644 hw/arm/digic.c
>  create mode 100644 include/hw/arm/digic.h
>
> diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
> index e48f102..2135be3 100644
> --- a/default-configs/arm-softmmu.mak
> +++ b/default-configs/arm-softmmu.mak
> @@ -64,6 +64,7 @@ CONFIG_XILINX_SPIPS=y
>
>  CONFIG_ARM11SCU=y
>  CONFIG_A9SCU=y
> +CONFIG_DIGIC=y
>  CONFIG_MARVELL_88W8618=y
>  CONFIG_OMAP=y
>  CONFIG_TSC210X=y
> diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
> index 78b5614..8789807 100644
> --- a/hw/arm/Makefile.objs
> +++ b/hw/arm/Makefile.objs
> @@ -4,4 +4,5 @@ obj-y += omap_sx1.o palm.o realview.o spitz.o stellaris.o
>  obj-y += tosa.o versatilepb.o vexpress.o virt.o xilinx_zynq.o z2.o
>
>  obj-y += armv7m.o exynos4210.o pxa2xx.o pxa2xx_gpio.o pxa2xx_pic.o
> +obj-$(CONFIG_DIGIC) += digic.o
>  obj-y += omap1.o omap2.o strongarm.o
> diff --git a/hw/arm/digic.c b/hw/arm/digic.c
> new file mode 100644
> index 0000000..2620262
> --- /dev/null
> +++ b/hw/arm/digic.c
> @@ -0,0 +1,71 @@
> +/*
> + * QEMU model of the Canon DIGIC SoC.
> + *
> + * Copyright (C) 2013 Antony Pavlov <address@hidden>
> + *
> + * This model is based on reverse engineering efforts
> + * made by CHDK (http://chdk.wikia.com) and
> + * Magic Lantern (http://www.magiclantern.fm) projects
> + * contributors.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#include "hw/arm/digic.h"
> +
> +static void digic_init(Object *obj)
> +{
> +    DigicState *s = DIGIC(obj);
> +
> +    object_initialize(&s->cpu, sizeof(s->cpu), "arm946-" TYPE_ARM_CPU);
> +    object_property_add_child(obj, "cpu", OBJECT(&s->cpu), NULL);
> +}
> +
> +static void digic_realize(DeviceState *dev, Error **errp)
> +{
> +    DigicState *s = DIGIC(dev);
> +    Error *err = NULL;
> +
> +    object_property_set_bool(OBJECT(&s->cpu), true, "reset-hivecs", &err);
> +    if (err != NULL) {
> +        error_propagate(errp, err);
> +        return;
> +    }
> +
> +    object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
> +    if (err != NULL) {
> +        error_propagate(errp, err);
> +        return;
> +    }
> +}
> +
> +static void digic_class_init(ObjectClass *oc, void *data)
> +{
> +    DeviceClass *dc = DEVICE_CLASS(oc);
> +
> +    dc->realize = digic_realize;
> +}
> +
> +static const TypeInfo digic_type_info = {
> +    .name = TYPE_DIGIC,
> +    .parent = TYPE_DEVICE,
> +    .instance_size = sizeof(DigicState),
> +    .instance_init = digic_init,
> +    .class_init = digic_class_init,
> +};
> +
> +static void digic_register_types(void)
> +{
> +    type_register_static(&digic_type_info);
> +}
> +
> +type_init(digic_register_types)
> diff --git a/include/hw/arm/digic.h b/include/hw/arm/digic.h
> new file mode 100644
> index 0000000..b7d16fb
> --- /dev/null
> +++ b/include/hw/arm/digic.h
> @@ -0,0 +1,35 @@
> +/*
> + * Misc Canon DIGIC declarations.
> + *
> + * Copyright (C) 2013 Antony Pavlov <address@hidden>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#ifndef HW_ARM_DIGIC_H
> +#define HW_ARM_DIGIC_H
> +
> +#include "cpu.h"
> +
> +#define TYPE_DIGIC "digic"
> +
> +#define DIGIC(obj) OBJECT_CHECK(DigicState, (obj), TYPE_DIGIC)
> +
> +typedef struct DigicState {
> +    /*< private >*/
> +    DeviceState parent_obj;
> +    /*< public >*/
> +
> +    ARMCPU cpu;
> +} DigicState;
> +
> +#endif /* HW_ARM_DIGIC_H */
> --
> 1.8.5
>
>