chore: bootloader abtraction

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

bootloader.go

@@ -0,0 +1,42 @@
+// Copyright 2023 Linka Cloud  All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package d2vm
+
+import (
+	"context"
+	"fmt"
+)
+
+var bootloaderProviders = map[string]BootloaderProvider{}
+
+func RegisterBootloaderProvider(provider BootloaderProvider) {
+	bootloaderProviders[provider.Name()] = provider
+}
+
+func BootloaderByName(name string) (BootloaderProvider, error) {
+	if p, ok := bootloaderProviders[name]; ok {
+		return p, nil
+	}
+	return nil, fmt.Errorf("bootloader provider %s not found", name)
+}
+
+type BootloaderProvider interface {
+	New(c Config) (Bootloader, error)
+	Name() string
+}
+
+type Bootloader interface {
+	Setup(ctx context.Context, raw, path, cmdline string) error
+}