diff --git a/bolt_mips64x.go b/bolt_mips64x.go
new file mode 100644
index 0000000..134b578
--- /dev/null
+++ b/bolt_mips64x.go
@@ -0,0 +1,12 @@
+// +build mips64 mips64le
+
+package bolt
+
+// maxMapSize represents the largest mmap size supported by Bolt.
+const maxMapSize = 0x8000000000 // 512GB
+
+// maxAllocSize is the size used when creating array pointers.
+const maxAllocSize = 0x7FFFFFFF
+
+// Are unaligned load/stores broken on this arch?
+var brokenUnaligned = false
diff --git a/bolt_mipsx.go b/bolt_mipsx.go
new file mode 100644
index 0000000..d5ecb05
--- /dev/null
+++ b/bolt_mipsx.go
@@ -0,0 +1,12 @@
+// +build mips mipsle
+
+package bolt
+
+// maxMapSize represents the largest mmap size supported by Bolt.
+const maxMapSize = 0x40000000 // 1GB
+
+// maxAllocSize is the size used when creating array pointers.
+const maxAllocSize = 0xFFFFFFF
+
+// Are unaligned load/stores broken on this arch?
+var brokenUnaligned = false