diff --git a/config/Cargo.toml b/config/Cargo.toml
index a5761b9c..c4921d72 100644
--- a/config/Cargo.toml
+++ b/config/Cargo.toml
@@ -7,3 +7,6 @@ edition = "2021"
 
 [dependencies]
 paste = "1.0"
+
+[features]
+vf2 = []
diff --git a/config/src/board.rs b/config/src/board.rs
index 53a53401..d2084a75 100644
--- a/config/src/board.rs
+++ b/config/src/board.rs
@@ -1,5 +1,5 @@
 use crate::{
-    mm::{RAM_SIZE, VIRT_RAM_OFFSET, VIRT_START},
+    mm::{RAM_SIZE, VIRT_START},
     utils::register_mut_const,
 };
 
diff --git a/config/src/mm.rs b/config/src/mm.rs
index 0086f6b9..bb3b5be0 100644
--- a/config/src/mm.rs
+++ b/config/src/mm.rs
@@ -3,9 +3,18 @@ use crate::{
     utils::register_mut_const,
 };
 
+#[cfg(not(feature = "vf2"))]
 pub const RAM_START: usize = 0x8000_0000;
-pub const VIRT_START: usize = 0xffff_ffc0_8000_0000;
+#[cfg(feature = "vf2")]
+pub const RAM_START: usize = 0x8000_0000;
+
+pub const HIGH_HALF: usize = 0xffff_ffc0_0000_0000;
+pub const VIRT_START: usize = HIGH_HALF + RAM_START;
+
+#[cfg(not(feature = "vf2"))]
 pub const RAM_SIZE: usize = 128 * 1024 * 1024;
+#[cfg(feature = "vf2")]
+pub const RAM_SIZE: usize = 0x100000000 + RAM_START - 0x4000_0000;
 
 pub const VIRT_RAM_OFFSET: usize = KERNEL_START - KERNEL_START_PHYS;
 
@@ -14,9 +23,13 @@ pub const KERNEL_START_PHYS: usize = RAM_START + KERNEL_OFFSET;
 pub const KERNEL_START: usize = VIRT_START + KERNEL_OFFSET;
 
 pub const KERNEL_STACK_SIZE: usize = 64 * 1024;
+
+#[cfg(not(feature = "vf2"))]
 pub const KERNEL_HEAP_SIZE: usize = 64 * 1024 * 1024;
+#[cfg(feature = "vf2")]
+pub const KERNEL_HEAP_SIZE: usize = 256 * 1024 * 1024;
 
-pub const HART_START_ADDR: usize = 0x80200000;
+pub const HART_START_ADDR: usize = RAM_START + KERNEL_START;
 
 register_mut_const!(pub DTB_ADDR, usize, 0);
 
diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index 983b57e7..03e43cfb 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -54,3 +54,4 @@ strace = []
 smp = []
 preempt = []
 debug = []
+vf2 = ["config/vf2"]
diff --git a/kernel/Makefile b/kernel/Makefile
index b24892d5..bab03068 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -12,6 +12,9 @@ endif
 ifneq ($(DEBUG), )
 	FEATURES += debug
 endif
+ifneq ($(VF2), )
+	FEATURES += vf2
+endif
 
 CARGO_BUILD_ARGS :=
 ifeq ($(MODE), release)