From d0e54f39f8ad2c34f18fca315bad53050fb9ac19 Mon Sep 17 00:00:00 2001
From: Marius van der Wijden <m.vanderwijden@live.de>
Date: Thu, 13 Feb 2025 14:32:48 +0100
Subject: [PATCH] params: add osaka blob schedule

---
 consensus/misc/eip4844/eip4844.go |  8 ++++++++
 params/config.go                  |  9 +++++++++
 tests/init.go                     | 10 ++++++++++
 3 files changed, 27 insertions(+)

diff --git a/consensus/misc/eip4844/eip4844.go b/consensus/misc/eip4844/eip4844.go
index 4a2754b55c..9a2f4728f5 100644
--- a/consensus/misc/eip4844/eip4844.go
+++ b/consensus/misc/eip4844/eip4844.go
@@ -87,6 +87,8 @@ func CalcBlobFee(config *params.ChainConfig, header *types.Header) *big.Int {
 		frac = config.BlobScheduleConfig.Prague.UpdateFraction
 	case forks.Cancun:
 		frac = config.BlobScheduleConfig.Cancun.UpdateFraction
+	case forks.Osaka:
+		frac = config.BlobScheduleConfig.Osaka.UpdateFraction
 	default:
 		panic("calculating blob fee on unsupported fork")
 	}
@@ -107,6 +109,8 @@ func MaxBlobsPerBlock(cfg *params.ChainConfig, time uint64) int {
 		return s.Prague.Max
 	case cfg.IsCancun(london, time) && s.Cancun != nil:
 		return s.Cancun.Max
+	case cfg.IsOsaka(london, time) && s.Osaka != nil:
+		return s.Osaka.Max
 	default:
 		return 0
 	}
@@ -129,6 +133,8 @@ func LatestMaxBlobsPerBlock(cfg *params.ChainConfig) int {
 		return s.Prague.Max
 	case s.Cancun != nil:
 		return s.Cancun.Max
+	case s.Osaka != nil:
+		return s.Osaka.Max
 	default:
 		return 0
 	}
@@ -148,6 +154,8 @@ func targetBlobsPerBlock(cfg *params.ChainConfig, time uint64) int {
 		return s.Prague.Target
 	case cfg.IsCancun(london, time) && s.Cancun != nil:
 		return s.Cancun.Target
+	case cfg.IsOsaka(london, time) && s.Osaka != nil:
+		return s.Osaka.Target
 	default:
 		return 0
 	}
diff --git a/params/config.go b/params/config.go
index cb12098bc9..53f097c79a 100644
--- a/params/config.go
+++ b/params/config.go
@@ -317,10 +317,17 @@ var (
 		Max:            9,
 		UpdateFraction: 5007716,
 	}
+	// DefaultOsakaBlobConfig is the default blob configuration for the Osaka fork.
+	DefaultOsakaBlobConfig = &BlobConfig{
+		Target:         6,
+		Max:            9,
+		UpdateFraction: 5007716,
+	}
 	// DefaultBlobSchedule is the latest configured blob schedule for test chains.
 	DefaultBlobSchedule = &BlobScheduleConfig{
 		Cancun: DefaultCancunBlobConfig,
 		Prague: DefaultPragueBlobConfig,
+		Osaka:  DefaultOsakaBlobConfig,
 	}
 )
 
@@ -501,6 +508,7 @@ type BlobConfig struct {
 type BlobScheduleConfig struct {
 	Cancun *BlobConfig `json:"cancun,omitempty"`
 	Prague *BlobConfig `json:"prague,omitempty"`
+	Osaka  *BlobConfig `json:"osaka,omitempty"`
 	Verkle *BlobConfig `json:"verkle,omitempty"`
 }
 
@@ -732,6 +740,7 @@ func (c *ChainConfig) CheckConfigForkOrder() error {
 	}{
 		{name: "cancun", timestamp: c.CancunTime, config: bsc.Cancun},
 		{name: "prague", timestamp: c.PragueTime, config: bsc.Prague},
+		{name: "osaka", timestamp: c.OsakaTime, config: bsc.Osaka},
 	} {
 		if cur.config != nil {
 			if err := cur.config.validate(); err != nil {
diff --git a/tests/init.go b/tests/init.go
index ee8d354224..a8bc424fa2 100644
--- a/tests/init.go
+++ b/tests/init.go
@@ -431,6 +431,11 @@ var Forks = map[string]*params.ChainConfig{
 		PragueTime:              u64(0),
 		OsakaTime:               u64(0),
 		DepositContractAddress:  params.MainnetChainConfig.DepositContractAddress,
+		BlobScheduleConfig: &params.BlobScheduleConfig{
+			Cancun: params.DefaultCancunBlobConfig,
+			Prague: params.DefaultPragueBlobConfig,
+			Osaka:  params.DefaultOsakaBlobConfig,
+		},
 	},
 	"PragueToOsakaAtTime15k": {
 		ChainID:                 big.NewInt(1),
@@ -453,6 +458,11 @@ var Forks = map[string]*params.ChainConfig{
 		PragueTime:              u64(0),
 		OsakaTime:               u64(15_000),
 		DepositContractAddress:  params.MainnetChainConfig.DepositContractAddress,
+		BlobScheduleConfig: &params.BlobScheduleConfig{
+			Cancun: params.DefaultCancunBlobConfig,
+			Prague: params.DefaultPragueBlobConfig,
+			Osaka:  params.DefaultOsakaBlobConfig,
+		},
 	},
 }