v4.19.13 snapshot.
diff --git a/arch/sh/include/asm/sparsemem.h b/arch/sh/include/asm/sparsemem.h
new file mode 100644
index 0000000..4eb8997
--- /dev/null
+++ b/arch/sh/include/asm/sparsemem.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SH_SPARSEMEM_H
+#define __ASM_SH_SPARSEMEM_H
+
+#ifdef __KERNEL__
+/*
+ * SECTION_SIZE_BITS 2^N: how big each section will be
+ * MAX_PHYSADDR_BITS 2^N: how much physical address space we have
+ * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
+ */
+#define SECTION_SIZE_BITS 26
+#define MAX_PHYSADDR_BITS 32
+#define MAX_PHYSMEM_BITS 32
+
+#endif
+
+#endif /* __ASM_SH_SPARSEMEM_H */