diff --git a/src/mainboard/google/zork/variants/dirinboz/spd/Makefile.inc b/src/mainboard/google/zork/variants/dirinboz/spd/Makefile.inc
new file mode 100644
index 0000000000..480e75743d
--- /dev/null
+++ b/src/mainboard/google/zork/variants/dirinboz/spd/Makefile.inc
@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Ordered List of APCB entries, up to 16.
+# Entries should match this pattern {NAME}_x{1,2}
+# There should be a matching SPD hex file in SPD_SOURCES_DIR
+# matching the pattern {NAME}.spd.hex
+# The _x{1,2} suffix denotes single or dual channel
+# Alternatively, generated APCBs stored at
+# 3rdparty/blobs/mainboard/$(MAINBOARDDIR)/APCB_{NAME}.bin will be included.
+APCB_SOURCES =  hynix-HMA851S6CJR6N-VK_x1	# 0b0000
+APCB_SOURCES += hynix-H5ANAG6NCMR-VKC_x1	# 0b0001
+APCB_SOURCES += samsung-K4A8G165WC-BCTD_x1	# 0b0010
+APCB_SOURCES += samsung-K4AAG165WB-MCTD_x1	# 0b0011
+APCB_SOURCES += samsung-K4A8G165WC-BCWE_x1	# 0b0100
+APCB_SOURCES += hynix-H5AN8G6NDJR-XNC_x1	# 0b0101
+APCB_SOURCES += hynix-H5ANAG6NCMR-XNC_x1	# 0b0110
+APCB_SOURCES += micron-MT40A512M16TB-062E-J_x1	# 0b0111
+APCB_SOURCES += micron-MT40A1G16KD-062E-E_x1	# 0b1000
+APCB_SOURCES += samsung-K4AAG165WA-BCTD_x1	# 0b1001
+APCB_SOURCES += samsung-K4AAG165WA-BCWE_x1	# 0b1010
+APCB_SOURCES += empty				# 0b1011
+APCB_SOURCES += empty				# 0b1100
+APCB_SOURCES += empty				# 0b1101
+APCB_SOURCES += empty				# 0b1110
+APCB_SOURCES += empty				# 0b1111