diff --git a/board/alphaproject/ap_sh4a_4a/Makefile b/board/alphaproject/ap_sh4a_4a/Makefile
index 486d0ac..df76466 100644
--- a/board/alphaproject/ap_sh4a_4a/Makefile
+++ b/board/alphaproject/ap_sh4a_4a/Makefile
@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= ap_sh4a_4a.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/espt/Makefile b/board/espt/Makefile
index 8a8a2c9..f24e9cf 100644
--- a/board/espt/Makefile
+++ b/board/espt/Makefile
@@ -8,4 +8,4 @@
 #
 
 obj-y	:= espt.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/mpr2/Makefile b/board/mpr2/Makefile
index b6cdeb4..0cb1dd6 100644
--- a/board/mpr2/Makefile
+++ b/board/mpr2/Makefile
@@ -16,4 +16,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= mpr2.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/ms7720se/Makefile b/board/ms7720se/Makefile
index 1819c4c..66c25fa 100644
--- a/board/ms7720se/Makefile
+++ b/board/ms7720se/Makefile
@@ -13,4 +13,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= ms7720se.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/ms7722se/Makefile b/board/ms7722se/Makefile
index 9f7af78..808d459 100644
--- a/board/ms7722se/Makefile
+++ b/board/ms7722se/Makefile
@@ -10,4 +10,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= ms7722se.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/ms7750se/Makefile b/board/ms7750se/Makefile
index a8e3ca0..a010e32 100644
--- a/board/ms7750se/Makefile
+++ b/board/ms7750se/Makefile
@@ -6,4 +6,4 @@
 #
 
 obj-y	:= ms7750se.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/MigoR/Makefile b/board/renesas/MigoR/Makefile
index b4691a1..0686f97 100644
--- a/board/renesas/MigoR/Makefile
+++ b/board/renesas/MigoR/Makefile
@@ -10,4 +10,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= migo_r.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/ap325rxa/Makefile b/board/renesas/ap325rxa/Makefile
index ff72de9..18e1ed5 100644
--- a/board/renesas/ap325rxa/Makefile
+++ b/board/renesas/ap325rxa/Makefile
@@ -9,4 +9,4 @@
 #
 
 obj-y	:= ap325rxa.o cpld-ap325rxa.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/ecovec/Makefile b/board/renesas/ecovec/Makefile
index 943fa47..2e6fb50 100644
--- a/board/renesas/ecovec/Makefile
+++ b/board/renesas/ecovec/Makefile
@@ -5,4 +5,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y := ecovec.o
-obj-y += lowlevel_init.o
+extra-y += lowlevel_init.o
diff --git a/board/renesas/r0p7734/Makefile b/board/renesas/r0p7734/Makefile
index 1f24d92..bfe52d6 100644
--- a/board/renesas/r0p7734/Makefile
+++ b/board/renesas/r0p7734/Makefile
@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= r0p7734.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/r2dplus/Makefile b/board/renesas/r2dplus/Makefile
index acffb6d..4021ab6 100644
--- a/board/renesas/r2dplus/Makefile
+++ b/board/renesas/r2dplus/Makefile
@@ -6,4 +6,4 @@
 #
 
 obj-y	:= r2dplus.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/r7780mp/Makefile b/board/renesas/r7780mp/Makefile
index 8dab435..66813a3 100644
--- a/board/renesas/r7780mp/Makefile
+++ b/board/renesas/r7780mp/Makefile
@@ -6,4 +6,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= r7780mp.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/rsk7203/Makefile b/board/renesas/rsk7203/Makefile
index 16acfaf..08139a2 100644
--- a/board/renesas/rsk7203/Makefile
+++ b/board/renesas/rsk7203/Makefile
@@ -7,4 +7,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= rsk7203.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/rsk7264/Makefile b/board/renesas/rsk7264/Makefile
index 7ada697..2a845a0 100644
--- a/board/renesas/rsk7264/Makefile
+++ b/board/renesas/rsk7264/Makefile
@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= rsk7264.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/rsk7269/Makefile b/board/renesas/rsk7269/Makefile
index 0f053d8..86b2263 100644
--- a/board/renesas/rsk7269/Makefile
+++ b/board/renesas/rsk7269/Makefile
@@ -5,4 +5,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= rsk7269.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/sh7763rdp/Makefile b/board/renesas/sh7763rdp/Makefile
index cbf38bb..13f7ae9 100644
--- a/board/renesas/sh7763rdp/Makefile
+++ b/board/renesas/sh7763rdp/Makefile
@@ -9,4 +9,4 @@
 #
 
 obj-y	:= sh7763rdp.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/renesas/sh7785lcr/Makefile b/board/renesas/sh7785lcr/Makefile
index e8cfb05..1bf5d53 100644
--- a/board/renesas/sh7785lcr/Makefile
+++ b/board/renesas/sh7785lcr/Makefile
@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= sh7785lcr.o selfcheck.o rtl8169_mac.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o
diff --git a/board/shmin/Makefile b/board/shmin/Makefile
index daf36de..d169661 100644
--- a/board/shmin/Makefile
+++ b/board/shmin/Makefile
@@ -7,4 +7,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= shmin.o
-obj-y	+= lowlevel_init.o
+extra-y	+= lowlevel_init.o