diff --git a/configs/config.rush b/configs/config.rush
index 1aa4f109b8..7b9e97dc79 100644
--- a/configs/config.rush
+++ b/configs/config.rush
@@ -3,3 +3,4 @@ CONFIG_BOARD_GOOGLE_RUSH=y
 CONFIG_COREBOOT_ROMSIZE_KB_4096=y
 CONFIG_CONSOLE_SERIAL=y
 CONFIG_CONSOLE_CBMEM=y
+CONFIG_MTS_DIRECTORY="3rdparty/mainboard/google/rush"
diff --git a/src/soc/nvidia/tegra132/Kconfig b/src/soc/nvidia/tegra132/Kconfig
index d262c2e498..0a50d3e718 100644
--- a/src/soc/nvidia/tegra132/Kconfig
+++ b/src/soc/nvidia/tegra132/Kconfig
@@ -130,4 +130,10 @@ config CONSOLE_SERIAL_TEGRA132_UART_ADDRESS
 	help
 	  Map the UART names to the respective MMIO addres.
 
+config MTS_DIRECTORY
+	string "Directory where MTS microcode files are located"
+	default "."
+	help
+	  Path to directory where MTS microcode files are located.
+
 endif
diff --git a/src/soc/nvidia/tegra132/Makefile.inc b/src/soc/nvidia/tegra132/Makefile.inc
index fa15119542..c91457495c 100644
--- a/src/soc/nvidia/tegra132/Makefile.inc
+++ b/src/soc/nvidia/tegra132/Makefile.inc
@@ -78,7 +78,8 @@ $(obj)/generated/bct.bin: $(obj)/generated/bct.cfg
 
 BCT_BIN = $(obj)/generated/bct.bin
 BCT_WRAPPER = $(obj)/generated/bct.wrapper
-PREBOOT_MTS_FILE = 3rdparty/mainboard/$(MAINBOARDDIR)/mts_preboot_si
+MTS_DIR = $(CONFIG_MTS_DIRECTORY)
+PREBOOT_MTS_FILE = $(MTS_DIR)/mts_preboot_si
 $(objcbfs)/bootblock.bin: $(objcbfs)/bootblock.raw.bin $(BCT_BIN)
 	echo "Version    = 1;" > $(BCT_WRAPPER)
 	echo "Redundancy = 1;" >> $(BCT_WRAPPER)
@@ -90,7 +91,7 @@ $(objcbfs)/bootblock.bin: $(objcbfs)/bootblock.raw.bin $(BCT_BIN)
 	$(CBOOTIMAGE) $(CBOOTIMAGE_OPTS) $(BCT_WRAPPER) $@
 
 # MTS microcode
-MTS_FILE = 3rdparty/mainboard/$(MAINBOARDDIR)/mts_si
+MTS_FILE = $(MTS_DIR)/mts_si
 MTS_FILE_CBFS = mts
 cbfs-files-y += $(MTS_FILE_CBFS)
 $(MTS_FILE_CBFS)-file := $(MTS_FILE)