Re: [PATCH v5 7/9] aspeed/soc : Add AST1030 support

[Philippe Mathieu-Daudé]

Hi,

On 1/4/22 10:38, Jamin Lin wrote:
> From: Steven Lee <steven_lee@aspeedtech.com>
>
> The embedded core of AST1030 SoC is ARM Coretex M4.
> It is hard to be integrated in the common Aspeed Soc framework.
> We introduce a new ast1030 class with instance_init and realize
> handlers.
>
> Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
> Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
> Signed-off-by: Steven Lee <steven_lee@aspeedtech.com>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
> ---
>   hw/arm/aspeed_ast10xx.c     | 299 ++++++++++++++++++++++++++++++++++++
>   hw/arm/meson.build          |   6 +-
>   include/hw/arm/aspeed_soc.h |   3 +
>   3 files changed, 307 insertions(+), 1 deletion(-)
>   create mode 100644 hw/arm/aspeed_ast10xx.c


> +static void aspeed_soc_ast1030_realize(DeviceState *dev_soc, Error **errp)
> +{
> +    AspeedSoCState *s = ASPEED_SOC(dev_soc);
> +    AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s);
> +    MemoryRegion *system_memory = get_system_memory();
> +    DeviceState *armv7m;
> +    Error *err = NULL;
> +    int i;
> +
> +    if (!clock_has_source(s->sysclk)) {
> +        error_setg(errp, "sysclk clock must be wired up by the board code");
> +        return;
> +    }
> +
> +    /* General I/O memory space to catch all unimplemented device */
> +    create_unimplemented_device("aspeed.sbc",
> +                                sc->memmap[ASPEED_DEV_SBC],
> +                                0x40000);
> +    create_unimplemented_device("aspeed.io",
> +                                sc->memmap[ASPEED_DEV_IOMEM],
> +                                ASPEED_SOC_IOMEM_SIZE);
> +
> +    /* AST1030 CPU Core */
> +    armv7m = DEVICE(&s->armv7m);
> +    qdev_prop_set_uint32(armv7m, "num-irq", 256);

Can you confirm this SoC has 256 and not 240 IRQs?

> +    qdev_prop_set_string(armv7m, "cpu-type", sc->cpu_type);
> +    qdev_connect_clock_in(armv7m, "cpuclk", s->sysclk);
> +    object_property_set_link(OBJECT(&s->armv7m), "memory",
> +                             OBJECT(system_memory), &error_abort);
> +    sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), &error_abort);