3 files changed, 31 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 4d7a115..9da609b 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -139,4 +139,9 @@ config NR_CPUS
 	  Stack memory is pre-allocated. U-Boot must therefore know the
 	  maximum number of CPUs that may be present.
 
+config SBI_IPI
+	bool
+	default y if RISCV_SMODE
+	depends on SMP
+
 endmenu
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index 19370f9..35dbf64 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_RISCV_RDTIME) += rdtime.o
 obj-$(CONFIG_SIFIVE_CLINT) += sifive_clint.o
 obj-y	+= interrupts.o
 obj-y	+= reset.o
+obj-$(CONFIG_SBI_IPI) += sbi_ipi.o
 obj-y   += setjmp.o
 obj-$(CONFIG_SMP) += smp.o
 
diff --git a/arch/riscv/lib/sbi_ipi.c b/arch/riscv/lib/sbi_ipi.c
new file mode 100644
index 0000000..170346d
--- /dev/null
+++ b/arch/riscv/lib/sbi_ipi.c
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Fraunhofer AISEC,
+ * Lukas Auer <lukas.auer@aisec.fraunhofer.de>
+ */
+
+#include <common.h>
+#include <asm/sbi.h>
+
+int riscv_send_ipi(int hart)
+{
+	ulong mask;
+
+	mask = 1UL << hart;
+	sbi_send_ipi(&mask);
+
+	return 0;
+}
+
+int riscv_clear_ipi(int hart)
+{
+	sbi_clear_ipi();
+
+	return 0;
+}