[PATCH v5 05/11] target/arm: Restrict ARMv6 cpus to TCG accel

[Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>]

KVM requires a cpu based on (at least) the ARMv7 architecture.

Only enable the following ARMv6 CPUs when TCG is available:

  - ARM1136
  - ARM1176
  - ARM11MPCore
  - Cortex-M0

The following machines are no more built when TCG is disabled:

  - kzm                  ARM KZM Emulation Baseboard (ARM1136)
  - microbit             BBC micro:bit (Cortex-M0)
  - n800                 Nokia N800 tablet aka. RX-34 (OMAP2420)
  - n810                 Nokia N810 tablet aka. RX-44 (OMAP2420)
  - realview-eb-mpcore   ARM RealView Emulation Baseboard (ARM11MPCore)

Signed-off-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>
---
 default-configs/devices/arm-softmmu.mak |  2 --
 hw/arm/realview.c                       |  2 +-
 hw/arm/Kconfig                          | 11 +++++++++++
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/default-configs/devices/arm-softmmu.mak b/default-configs/devices/arm-softmmu.mak
index 5b25fafc9ab..ee80bf15150 100644
--- a/default-configs/devices/arm-softmmu.mak
+++ b/default-configs/devices/arm-softmmu.mak
@@ -10,9 +10,7 @@ CONFIG_ARM_VIRT=y
 CONFIG_CUBIEBOARD=y
 CONFIG_EXYNOS4=y
 CONFIG_HIGHBANK=y
-CONFIG_FSL_IMX31=y
 CONFIG_MUSCA=y
-CONFIG_NSERIES=y
 CONFIG_STELLARIS=y
 CONFIG_REALVIEW=y
 CONFIG_VEXPRESS=y
diff --git a/hw/arm/realview.c b/hw/arm/realview.c
index cd37b501287..57a37608e39 100644
--- a/hw/arm/realview.c
+++ b/hw/arm/realview.c
@@ -463,8 +463,8 @@ static void realview_machine_init(void)
 {
     if (tcg_enabled()) {
         type_register_static(&realview_eb_type);
+        type_register_static(&realview_eb_mpcore_type);
     }
-    type_register_static(&realview_eb_mpcore_type);
     type_register_static(&realview_pb_a8_type);
     type_register_static(&realview_pbx_a9_type);
 }
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index bdb8c63af7b..daab7081994 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -6,6 +6,11 @@ config ARM_V5
     bool
     depends on TCG
 
+config ARM_V6
+    bool
+    depends on TCG
+    select ARM_COMPATIBLE_SEMIHOSTING
+
 config ARM_VIRT
     bool
     imply PCI_DEVICES
@@ -131,6 +136,8 @@ config NETDUINOPLUS2
 
 config NSERIES
     bool
+    default y if TCG
+    select ARM_V6
     select OMAP
     select TMP105   # tempature sensor
     select BLIZZARD # LCD/TV controller
@@ -411,6 +418,8 @@ config FSL_IMX25
 
 config FSL_IMX31
     bool
+    default y if TCG
+    select ARM_V6
     select SERIAL
     select IMX
     select IMX_I2C
@@ -488,11 +497,13 @@ config FSL_IMX6UL
 
 config MICROBIT
     bool
+    default y if TCG
     select NRF51_SOC
 
 config NRF51_SOC
     bool
     select I2C
+    select ARM_V6
     select ARM_V7M
     select UNIMP
 
-- 
2.26.2