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Re: [Qemu-devel] [Qemu-arm] [PATCH v4 2/6] target/arm: add "cortex-m0" C
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [Qemu-devel] [Qemu-arm] [PATCH v4 2/6] target/arm: add "cortex-m0" CPU model |
Date: |
Fri, 10 Aug 2018 00:38:16 -0300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
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 <address@hidden>
> Reviewed-by: Peter Maydell <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
> ---
> 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,
>
- [Qemu-devel] [PATCH v4 0/6] arm: add Cortex M0 CPU model and hex file loader, Stefan Hajnoczi, 2018/08/03
- [Qemu-devel] [PATCH v4 2/6] target/arm: add "cortex-m0" CPU model, Stefan Hajnoczi, 2018/08/03
- Re: [Qemu-devel] [Qemu-arm] [PATCH v4 2/6] target/arm: add "cortex-m0" CPU model,
Philippe Mathieu-Daudé <=
- [Qemu-devel] [PATCH v4 3/6] loader: extract rom_free() function, Stefan Hajnoczi, 2018/08/03
- [Qemu-devel] [PATCH v4 1/6] hw/arm: make bitbanded IO optional on ARMv7-M, Stefan Hajnoczi, 2018/08/03
- [Qemu-devel] [PATCH v4 4/6] loader: add rom transaction API, Stefan Hajnoczi, 2018/08/03
- [Qemu-devel] [PATCH v4 5/6] loader: Implement .hex file loader, Stefan Hajnoczi, 2018/08/03