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[Qemu-arm] [PATCH v6 2/6] target/arm: add "cortex-m0" CPU model
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-arm] [PATCH v6 2/6] target/arm: add "cortex-m0" CPU model |
Date: |
Tue, 14 Aug 2018 17:27:35 +0100 |
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,
--
2.17.1
- [Qemu-arm] [PATCH v6 0/6] arm: add Cortex M0 CPU model and hex file loader, Stefan Hajnoczi, 2018/08/14
- [Qemu-arm] [PATCH v6 1/6] hw/arm: make bitbanded IO optional on ARMv7-M, Stefan Hajnoczi, 2018/08/14
- [Qemu-arm] [PATCH v6 3/6] loader: extract rom_free() function, Stefan Hajnoczi, 2018/08/14
- [Qemu-arm] [PATCH v6 2/6] target/arm: add "cortex-m0" CPU model,
Stefan Hajnoczi <=
- [Qemu-arm] [PATCH v6 5/6] loader: Implement .hex file loader, Stefan Hajnoczi, 2018/08/14
- [Qemu-arm] [PATCH v6 6/6] Add QTest testcase for the Intel Hexadecimal, Stefan Hajnoczi, 2018/08/14
- [Qemu-arm] [PATCH v6 4/6] loader: add rom transaction API, Stefan Hajnoczi, 2018/08/14
- Re: [Qemu-arm] [PATCH v6 0/6] arm: add Cortex M0 CPU model and hex file loader, Peter Maydell, 2018/08/16