diff --git a/default-configs/sh4-softmmu.mak b/default-configs/sh4-softmmu.mak
index 4ba558488f..565e8b0b5d 100644
--- a/default-configs/sh4-softmmu.mak
+++ b/default-configs/sh4-softmmu.mak
@@ -1,15 +1,11 @@
 # Default configuration for sh4eb-softmmu
 
-CONFIG_PCI=y
-CONFIG_PCI_DEVICES=y
-CONFIG_SERIAL=y
-CONFIG_PFLASH_CFI02=y
-CONFIG_SH4=y
-CONFIG_IDE_MMIO=y
-CONFIG_SM501=y
-CONFIG_TEST_DEVICES=y
-CONFIG_I82378=y
-CONFIG_I82374=y
+# Uncomment the following lines to disable these optional devices:
+#
+#CONFIG_PCI_DEVICES=n
+#CONFIG_TEST_DEVICES=n
+
+# Boards:
+#
 CONFIG_R2D=y
 CONFIG_SHIX=y
-CONFIG_TEST_DEVICES=y
diff --git a/default-configs/sh4eb-softmmu.mak b/default-configs/sh4eb-softmmu.mak
index 9717673d20..522a7a50fa 100644
--- a/default-configs/sh4eb-softmmu.mak
+++ b/default-configs/sh4eb-softmmu.mak
@@ -1,14 +1,3 @@
 # Default configuration for sh4eb-softmmu
 
-CONFIG_PCI=y
-CONFIG_PCI_DEVICES=y
-CONFIG_SERIAL=y
-CONFIG_PFLASH_CFI02=y
-CONFIG_SH4=y
-CONFIG_IDE_MMIO=y
-CONFIG_SM501=y
-CONFIG_TEST_DEVICES=y
-CONFIG_I82378=y
-CONFIG_I82374=y
-CONFIG_R2D=y
-CONFIG_SHIX=y
+include sh4-softmmu.mak
diff --git a/hw/sh4/Kconfig b/hw/sh4/Kconfig
index 1ea2bc356d..8597613a35 100644
--- a/hw/sh4/Kconfig
+++ b/hw/sh4/Kconfig
@@ -1,8 +1,19 @@
 config R2D
     bool
+    imply PCI_DEVICES
+    imply TEST_DEVICES
+    select I82378 if TEST_DEVICES
+    select IDE_MMIO
+    select PFLASH_CFI02
+    select USB_OHCI
+    select PCI
+    select SM501
+    select SH4
 
 config SHIX
     bool
+    select SH7750
+    select SH4
 
 config SH7750
     bool