all: define Berlin hard fork spec

eth/backend.go

@@ -126,7 +126,7 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 	if err != nil {
 		return nil, err
 	}
-	chainConfig, genesisHash, genesisErr := core.SetupGenesisBlock(chainDb, config.Genesis)
+	chainConfig, genesisHash, genesisErr := core.SetupGenesisBlockWithOverride(chainDb, config.Genesis, config.OverrideBerlin)
 	if _, ok := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !ok {
 		return nil, genesisErr
 	}

eth/ethconfig/config.go

@@ -198,6 +198,9 @@ type Config struct {
 
 	// CheckpointOracle is the configuration for checkpoint oracle.
 	CheckpointOracle *params.CheckpointOracleConfig `toml:",omitempty"`
+
+	// Berlin block override (TODO: remove after the fork)
+	OverrideBerlin *big.Int `toml:",omitempty"`
 }
 
 // CreateConsensusEngine creates a consensus engine for the given chain configuration.

eth/tracers/api.go

@@ -581,8 +581,8 @@ func (api *API) standardTraceBlockToFile(ctx context.Context, block *types.Block
 		chainConfigCopy := new(params.ChainConfig)
 		*chainConfigCopy = *chainConfig
 		chainConfig = chainConfigCopy
-		if yolov3 := config.LogConfig.Overrides.YoloV3Block; yolov3 != nil {
-			chainConfig.YoloV3Block = yolov3
+		if berlin := config.LogConfig.Overrides.BerlinBlock; berlin != nil {
+			chainConfig.BerlinBlock = berlin
 			canon = false
 		}
 	}