1 files changed, 15 insertions, 0 deletions
diff --git a/core/chain_manager.go b/core/chain_manager.go
index f2382cf8d..17bfb1f3e 100644
--- a/core/chain_manager.go
+++ b/core/chain_manager.go
@@ -231,6 +231,21 @@ func (bc *ChainManager) Reset() {
 	bc.setTotalDifficulty(ethutil.Big("0"))
 }
 
+func (bc *ChainManager) ResetWithGenesisBlock(gb *types.Block) {
+	bc.mu.Lock()
+	defer bc.mu.Unlock()
+
+	for block := bc.currentBlock; block != nil; block = bc.GetBlock(block.Header().ParentHash) {
+		bc.db.Delete(block.Hash())
+	}
+
+	// Prepare the genesis block
+	bc.genesisBlock = gb
+	bc.write(bc.genesisBlock)
+	bc.insert(bc.genesisBlock)
+	bc.currentBlock = bc.genesisBlock
+}
+
 func (self *ChainManager) Export() []byte {
 	self.mu.RLock()
 	defer self.mu.RUnlock()