initrd-bootchain: allow BOOTCHAIN_LOGFILE, BOOTCHAIN_LOG_VT to be reassigned

features.in/initrd-bootchain/config.mk

@@ -19,3 +19,5 @@ use/initrd-bootchain: use/uuid-iso
 	@$(call try,BOOTCHAIN_OEM_SRV_NETINST,)
 	@$(call try,BOOTCHAIN_OEM_NFS_NETINST,/srv/public/netinst)
 	@$(call try,BOOTCHAIN_OEM_CIFS_NETINST,/netinst)
+	@$(call try,BOOTCHAIN_LOGFILE,/var/log/bootchained.log)
+	@$(call try,BOOTCHAIN_LOG_VT,3)

features.in/initrd-bootchain/generate.mk

@@ -28,6 +28,8 @@ all: debug
 		-e "s,@oem_srv_netinst@,$(BOOTCHAIN_OEM_SRV_NETINST)," \
 		-e "s,@oem_nfs_netinst@,$(BOOTCHAIN_OEM_NFS_NETINST)," \
 		-e "s,@oem_cifs_netinst@,$(BOOTCHAIN_OEM_CIFS_NETINST)," \
+		-e "s,@bc_logfile@,$(BOOTCHAIN_LOGFILE)," \
+		-e "s,@bc_log_vt@,$(BOOTCHAIN_LOG_VT)," \
 		$(BOOTCHAIN_CFG)
 
 debug:

features.in/initrd-bootchain/stage1/files/bootchain

@@ -8,13 +8,13 @@
 # mntdir=/dev/bootchain
 
 # Change VT number to show log on specified TTY, empty value turns off this VT
-# BC_LOG_VT=3
+BC_LOG_VT=@bc_log_vt@
 
 # Delay in seconds before auto-activate interactive VT, empty value for switch immediately
 BC_FGVT_ACTIVATE=@bc_fgvt_activate@
 
 # Full path to the bootchain log or character special device name
-# BC_LOGFILE=/var/log/bootchained.log
+BC_LOGFILE=@bc_logfile@
 
 # Common timeout in seconds for all waitdev steps:
 # this make possible using fallback after last waitdev step