soc: riscv: virt: enable RISC-V PMP support

Enable CONFIG_RISCV_PMP in qemu virt soc. Use this SoC as CI testing
platform of RISC-V PMP and Userspace.

Signed-off-by: Jim Shu <cwshu@andestech.com>

boards/riscv/qemu_riscv32/qemu_riscv32_defconfig

@@ -12,3 +12,4 @@ CONFIG_RISCV_MACHINE_TIMER=y
 CONFIG_STACK_SENTINEL=y
 CONFIG_QEMU_ICOUNT_SHIFT=6
 CONFIG_XIP=n
+CONFIG_RISCV_PMP=y

soc/riscv/riscv-privilege/virt/Kconfig.defconfig.series

@@ -33,4 +33,10 @@ config MAX_IRQ_PER_AGGREGATOR
 config NUM_IRQS
 	default 64
 
+config PMP_POWER_OF_TWO_ALIGNMENT
+	default y
+
+config PMP_SLOT
+	default 16
+
 endif

soc/riscv/riscv-privilege/virt/Kconfig.series

@@ -5,3 +5,5 @@ config SOC_SERIES_RISCV_VIRT
 	bool "QEMU RISC-V VirtIO Board"
 	select RISCV
 	select SOC_FAMILY_RISCV_PRIVILEGE
+	select ARCH_HAS_USERSPACE if RISCV_PMP
+	select ARCH_HAS_STACK_PROTECTION if PMP_STACK_GUARD