diff --git a/builder/amazon/chroot/block_device.go b/builder/amazon/chroot/block_device.go
deleted file mode 100644
index 7920273e8..000000000
--- a/builder/amazon/chroot/block_device.go
+++ /dev/null
@@ -1,69 +0,0 @@
-//go:generate struct-markdown
-
-package chroot
-
-import (
-	"fmt"
-
-	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go/service/ec2"
-	awscommon "github.com/hashicorp/packer/builder/amazon/common"
-	"github.com/hashicorp/packer/template/interpolate"
-)
-
-type BlockDevice struct {
-	awscommon.BlockDevice `mapstructure:",squash"`
-	// ID, alias or ARN of the KMS key to use for boot volume encryption. This
-	// only applies to the main region, other regions where the AMI will be
-	// copied will be encrypted by the default EBS KMS key. For valid formats
-	// see KmsKeyId in the [AWS API docs -
-	// CopyImage](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CopyImage.html)
-	// This field is validated by Packer, when using an alias, you will have to
-	// prefix kms_key_id with alias/.
-	KmsKeyId string `mapstructure:"kms_key_id" required:"false"`
-}
-
-type BlockDevices []BlockDevice
-
-func (bds BlockDevices) BuildEC2BlockDeviceMappings() []*ec2.BlockDeviceMapping {
-	var blockDevices []*ec2.BlockDeviceMapping
-
-	for _, blockDevice := range bds {
-		blockDevices = append(blockDevices, blockDevice.BuildEC2BlockDeviceMapping())
-	}
-	return blockDevices
-}
-
-func (blockDevice BlockDevice) BuildEC2BlockDeviceMapping() *ec2.BlockDeviceMapping {
-	mapping := blockDevice.BlockDevice.BuildEC2BlockDeviceMapping()
-
-	if blockDevice.KmsKeyId != "" {
-		mapping.Ebs.KmsKeyId = aws.String(blockDevice.KmsKeyId)
-	}
-	return mapping
-}
-
-func (b *BlockDevice) Prepare(ctx *interpolate.Context) error {
-	err := b.BlockDevice.Prepare(ctx)
-	if err != nil {
-		return err
-	}
-
-	// Warn that encrypted must be true when setting kms_key_id
-	if b.KmsKeyId != "" && b.Encrypted.True() {
-		return fmt.Errorf("The device %v, must also have `encrypted: "+
-			"true` when setting a kms_key_id.", b.DeviceName)
-	}
-
-	_, err = interpolate.RenderInterface(&b, ctx)
-	return err
-}
-
-func (bds BlockDevices) Prepare(ctx *interpolate.Context) (errs []error) {
-	for _, block := range bds {
-		if err := block.Prepare(ctx); err != nil {
-			errs = append(errs, err)
-		}
-	}
-	return errs
-}
diff --git a/builder/amazon/chroot/builder.go b/builder/amazon/chroot/builder.go
index f51ae9255..2277fa38c 100644
--- a/builder/amazon/chroot/builder.go
+++ b/builder/amazon/chroot/builder.go
@@ -1,4 +1,5 @@
 //go:generate struct-markdown
+//go:generate mapstructure-to-hcl2 -type Config,BlockDevices,BlockDevice
 
 // The chroot package is able to create an Amazon AMI without requiring the
 // launch of a new instance for every build. It does this by attaching and
@@ -37,7 +38,7 @@ type Config struct {
 	// entry for your root volume, `root_volume_size` and `root_device_name`.
 	// See the [BlockDevices](#block-devices-configuration) documentation for
 	// fields.
-	AMIMappings BlockDevices `mapstructure:"ami_block_device_mappings" required:"false"`
+	AMIMappings awscommon.BlockDevices `mapstructure:"ami_block_device_mappings" hcl2-schema-generator:"ami_block_device_mappings,direct" required:"false"`
 	// This is a list of devices to mount into the chroot environment. This
 	// configuration parameter requires some additional documentation which is
 	// in the Chroot Mounts section. Please read that section for more
diff --git a/builder/amazon/chroot/step_register_ami_test.go b/builder/amazon/chroot/step_register_ami_test.go
index a6a64b8fc..72922c7e6 100644
--- a/builder/amazon/chroot/step_register_ami_test.go
+++ b/builder/amazon/chroot/step_register_ami_test.go
@@ -92,10 +92,10 @@ func TestStepRegisterAmi_buildRegisterOptsFromScratch(t *testing.T) {
 	config := Config{
 		FromScratch:  true,
 		PackerConfig: common.PackerConfig{},
-		AMIMappings: []BlockDevice{
-			{BlockDevice: amazon.BlockDevice{
+		AMIMappings: []amazon.BlockDevice{
+			amazon.BlockDevice{
 				DeviceName: rootDeviceName,
-			}},
+			},
 		},
 		RootDeviceName: rootDeviceName,
 	}
@@ -167,10 +167,10 @@ func TestStepRegisterAmi_buildRegisterOptFromExistingImageWithBlockDeviceMapping
 	config := Config{
 		FromScratch:  false,
 		PackerConfig: common.PackerConfig{},
-		AMIMappings: []BlockDevice{
-			{BlockDevice: amazon.BlockDevice{
+		AMIMappings: []amazon.BlockDevice{
+			amazon.BlockDevice{
 				DeviceName: rootDeviceName,
-			}},
+			},
 		},
 		RootDeviceName: rootDeviceName,
 	}