Ramdisk modules install to correct location

Install to recovery/root/first_stage_ramdisk if BOARD_USES_RECOVERY_AS_BOOT,
otherwise ramdisk. In addition, append /system if not InstallInRoot().

Test: pass
Bug: 147347110
Change-Id: Ie5895ac61a3d5d85f5d958a27c7980d6c79d997e

android/config.go

@@ -1233,3 +1233,7 @@ func (c *deviceConfig) DeviceSecondaryArch() string {
 func (c *deviceConfig) DeviceSecondaryArchVariant() string {
 	return String(c.config.productVariables.DeviceSecondaryArchVariant)
 }
+
+func (c *deviceConfig) BoardUsesRecoveryAsBoot() bool {
+	return Bool(c.config.productVariables.BoardUsesRecoveryAsBoot)
+}

android/paths.go

@@ -1256,8 +1256,14 @@ func modulePartition(ctx ModuleInstallPathContext) string {
 	} else if ctx.InstallInTestcases() {
 		partition = "testcases"
 	} else if ctx.InstallInRamdisk() {
-		// TODO(elsk): should be conditional on RECOVERY_AS_BOOT
+		if ctx.DeviceConfig().BoardUsesRecoveryAsBoot() {
+			partition = "recovery/root/first_stage_ramdisk"
+		} else {
 			partition = "ramdisk"
+		}
+		if !ctx.InstallInRoot() {
+			partition += "/system"
+		}
 	} else if ctx.InstallInRecovery() {
 		if ctx.InstallInRoot() {
 			partition = "recovery/root"

android/variable.go

@@ -316,6 +316,8 @@ type productVariables struct {
 	EnforceProductPartitionInterface *bool `json:",omitempty"`
 
 	InstallExtraFlattenedApexes *bool `json:",omitempty"`
+
+	BoardUsesRecoveryAsBoot *bool `json:",omitempty"`
 }
 
 func boolPtr(v bool) *bool {