On 08/03/2018 11:47 AM, Stefan Hajnoczi wrote:
> Define a "cortex-m0" ARMv6-M CPU model.
>
> Most of the register reset values set by other CPU models are not
> relevant for the cut-down ARMv6-M architecture.
>
> Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
> Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
> ---
> target/arm/cpu.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/target/arm/cpu.c b/target/arm/cpu.c
> index 3848ef46aa..7e477c0d23 100644
> --- a/target/arm/cpu.c
> +++ b/target/arm/cpu.c
> @@ -1255,6 +1255,15 @@ static void arm11mpcore_initfn(Object *obj)
> cpu->reset_auxcr = 1;
> }
>
> +static void cortex_m0_initfn(Object *obj)
> +{
> + ARMCPU *cpu = ARM_CPU(obj);
> + set_feature(&cpu->env, ARM_FEATURE_V6);
> + set_feature(&cpu->env, ARM_FEATURE_M);
> +
> + cpu->midr = 0x410cc200;
> +}
> +
> static void cortex_m3_initfn(Object *obj)
> {
> ARMCPU *cpu = ARM_CPU(obj);
> @@ -1845,6 +1854,8 @@ static const ARMCPUInfo arm_cpus[] = {
> { .name = "arm1136", .initfn = arm1136_initfn },
> { .name = "arm1176", .initfn = arm1176_initfn },
> { .name = "arm11mpcore", .initfn = arm11mpcore_initfn },
> + { .name = "cortex-m0", .initfn = cortex_m0_initfn,
> + .class_init = arm_v7m_class_init },
> { .name = "cortex-m3", .initfn = cortex_m3_initfn,
> .class_init = arm_v7m_class_init },
> { .name = "cortex-m4", .initfn = cortex_m4_initfn,
>
