diff --git a/kernel/src/arch/mipsel/consts.rs b/kernel/src/arch/mipsel/consts.rs
index 78f71db..ab7bf18 100644
--- a/kernel/src/arch/mipsel/consts.rs
+++ b/kernel/src/arch/mipsel/consts.rs
@@ -5,7 +5,7 @@ pub const KERNEL_OFFSET: usize = 0x80100000;
 pub const KERNEL_HEAP_SIZE: usize = 0x00a0_0000;
 
 pub const MEMORY_OFFSET: usize = 0x8000_0000;
-pub const MEMORY_END: usize = 0x8100_0000;
+pub const MEMORY_END: usize = 0x8800_0000;
 
 pub const USER_STACK_OFFSET: usize = 0x80000000 - USER_STACK_SIZE;
 pub const USER_STACK_SIZE: usize = 0x10000;
diff --git a/kernel/src/memory.rs b/kernel/src/memory.rs
index c6a34f0..2fb5308 100644
--- a/kernel/src/memory.rs
+++ b/kernel/src/memory.rs
@@ -17,11 +17,11 @@ pub type MemorySet = rcore_memory::memory_set::MemorySet<InactivePageTable0>;
 pub type FrameAlloc = bit_allocator::BitAlloc16M;
 
 // RISCV has 8M memory
-#[cfg(any(target_arch = "riscv32", target_arch = "riscv64", target_arch = "mips"))]
+#[cfg(any(target_arch = "riscv32", target_arch = "riscv64"))]
 pub type FrameAlloc = bit_allocator::BitAlloc4K;
 
 // Raspberry Pi 3 has 1G memory
-#[cfg(target_arch = "aarch64")]
+#[cfg(any(target_arch = "aarch64", target_arch = "mips"))]
 pub type FrameAlloc = bit_allocator::BitAlloc1M;
 
 lazy_static! {