diff options
| author | Aurelio C. Remonda <aurelioremonda@gmail.com> | 2015-06-19 14:17:44 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-06-19 14:17:44 +0100 |
| commit | ba890a9b2509a0087bb7eafddae02ea5ecbb7bb4 (patch) | |
| tree | 908673b310fe8c474e08c9d4663044ff4df197af /target-arm | |
| parent | ffdb1409a79c9cc91afd9f58df625fdca16bf8b9 (diff) | |
target-arm: Add the Cortex-M4 CPU
This patch adds the Cortex-M4 CPU. The M4 is basically the same as
the M3, the main differences being the DSP instructions and an
optional FPU. Only no-FPU cortex-M4 is implemented here, cortex-M4F
is not because the core target-arm code doesn't support the M-profile
FPU model yet.
Signed-off-by: Aurelio C. Remonda <aurelioremonda@gmail.com>
Message-id: 1434461850-4104-1-git-send-email-aurelioremonda@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/cpu.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target-arm/cpu.c b/target-arm/cpu.c index 7496983b42..524e8414ad 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -812,6 +812,15 @@ static void cortex_m3_initfn(Object *obj) cpu->midr = 0x410fc231; } +static void cortex_m4_initfn(Object *obj) +{ + ARMCPU *cpu = ARM_CPU(obj); + + set_feature(&cpu->env, ARM_FEATURE_V7); + set_feature(&cpu->env, ARM_FEATURE_M); + set_feature(&cpu->env, ARM_FEATURE_THUMB_DSP); + cpu->midr = 0x410fc240; /* r0p0 */ +} static void arm_v7m_class_init(ObjectClass *oc, void *data) { CPUClass *cc = CPU_CLASS(oc); @@ -1214,6 +1223,8 @@ static const ARMCPUInfo arm_cpus[] = { { .name = "arm11mpcore", .initfn = arm11mpcore_initfn }, { .name = "cortex-m3", .initfn = cortex_m3_initfn, .class_init = arm_v7m_class_init }, + { .name = "cortex-m4", .initfn = cortex_m4_initfn, + .class_init = arm_v7m_class_init }, { .name = "cortex-a8", .initfn = cortex_a8_initfn }, { .name = "cortex-a9", .initfn = cortex_a9_initfn }, { .name = "cortex-a15", .initfn = cortex_a15_initfn }, |