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target/arm: add "cortex-m0" CPU model 

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 <stefanha@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180814162739.11814-3-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Stefan Hajnoczi 2018-08-16 14:05:28 +01:00 committed by Peter Maydell
parent a1c5a06224
commit 191776b96a
1 changed files with 11 additions and 0 deletions
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11
target/arm/cpu.c
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@ -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,