diff --git a/.gitmodules b/.gitmodules
index 8ef071a..a7383ff 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,6 @@
 	path = external/cryptoauthlib
 	url = https://github.com/grisp/cryptoauthlib
 	branch = GRiSP2
+[submodule "external/lapack"]
+	path = external/lapack
+	url = https://github.com/Reference-LAPACK/lapack.git
diff --git a/Makefile b/Makefile
index 74844bd..3000037 100644
--- a/Makefile
+++ b/Makefile
@@ -19,6 +19,7 @@ SRC_BAREBOX = $(MAKEFILE_DIR)/external/barebox
 SRC_OPENOCD = $(MAKEFILE_DIR)/external/openocd-code
 SRC_IMX_USB_LOADER = $(MAKEFILE_DIR)/external/imx_usb_loader
 SRC_CRYPTOAUTHLIB = $(MAKEFILE_DIR)/external/cryptoauthlib
+SRC_BLAS = $(MAKEFILE_DIR)/external/lapack
 BUILD_BSP = $(MAKEFILE_DIR)/build/b-$(BSP)
 BUILD_BSP_GRISP1 = $(MAKEFILE_DIR)/build/b-$(BSP_GRISP1)
 BUILD_LOGS = $(MAKEFILE_DIR)/build
@@ -82,7 +83,7 @@ help:
 
 .PHONY: install
 #H Build and install the complete toolchain, libraries, fdt and so on.
-install: submodule-update toolchain toolchain-revision bootstrap bsp bsp-grisp1 libbsd fdt bsp.mk libgrisp libinih cryptoauthlib barebox-install
+install: submodule-update toolchain toolchain-revision bootstrap bsp bsp-grisp1 libbsd fdt bsp.mk libgrisp libinih cryptoauthlib barebox-install blas
 
 .PHONY: submodule-update
 #H Update the submodules.
@@ -103,6 +104,7 @@ toolchain:
 	cd $(RSB)/rtems && ../source-builder/sb-set-builder \
 	    --prefix=$(PREFIX) \
 	    --log=$(BUILD_LOGS)/rsb-toolchain.log \
+		--with-fortran \
 	    $(RTEMS_VERSION)/rtems-$(ARCH)
 	rm -rf $(RSB)/rtems/build
 
@@ -346,6 +348,41 @@ cryptoauthlib: cmake_toolchain_config
 		touch $(PREFIX)/$(TARGET)/$(BSP)/lib/include/cryptoauthlib/atca_start_config.h && \
 		touch $(PREFIX)/$(TARGET)/$(BSP)/lib/include/cryptoauthlib/atca_start_iface.h
 
+
+BLAS_TOOLS=\
+			BLLIB='$(MAKEFILE_DIR)external/BLAS/CBLAS/lib/blas_ARM.a' \
+			CBLIB='$(MAKEFILE_DIR)external/BLAS/CBLAS/lib/cblas_ARM.a' \
+			CC='$(MAKEFILE_DIR)rtems/$(RTEMS_VERSION)/bin/$(ARCH)-rtems$(RTEMS_VERSION)-gcc' \
+			FC='$(MAKEFILE_DIR)rtems/$(RTEMS_VERSION)/bin/$(ARCH)-rtems$(RTEMS_VERSION)-gfortran' \
+			RANLIB='$(MAKEFILE_DIR)rtems/$(RTEMS_VERSION)/$(ARCH)-rtems$(RTEMS_VERSION)/bin/ranlib' \
+			AR='$(MAKEFILE_DIR)rtems/$(RTEMS_VERSION)/$(ARCH)-rtems$(RTEMS_VERSION)/bin/ar' \
+			ARCH=$(AR)
+
+
+RANLIB=$(MAKEFILE_DIR)rtems/$(RTEMS_VERSION)/$(ARCH)-rtems$(RTEMS_VERSION)/bin/ranlib
+AR='$(MAKEFILE_DIR)rtems/$(RTEMS_VERSION)/$(ARCH)-rtems$(RTEMS_VERSION)/bin/ar'
+
+.PHONY: blas
+#H Build the BLAS-LAPACKE library.
+blas:
+	cp external/BLAS/make.inc $(SRC_BLAS) 
+	cd $(SRC_BLAS) && make blaslib $(BLAS_TOOLS)
+	cd $(SRC_BLAS) && make cblaslib $(BLAS_TOOLS)
+	cd $(SRC_BLAS) && make lapacklib $(BLAS_TOOLS)
+	cd $(SRC_BLAS) && make lapackelib $(BLAS_TOOLS)
+	cd $(SRC_BLAS) &&\
+		$(AR) -x librefblas.a &&\
+		$(AR) -x libcblas.a &&\
+		$(AR) -x liblapack.a &&\
+		$(AR) -x liblapacke.a &&\
+		$(AR) -qc libblas.a *.o &&\
+		rm *.o &&\
+		$(RANLIB) libblas.a
+	cp $(SRC_BLAS)/libblas.a $(PREFIX)/$(TARGET)/$(BSP)/lib/libblas.a
+	cp $(SRC_BLAS)/CBLAS/include/cblas.h $(PREFIX)/$(TARGET)/$(BSP)/lib/include/cblas.h
+	cp $(SRC_BLAS)/CBLAS/include/cblas_mangling.h $(PREFIX)/$(TARGET)/$(BSP)/lib/include/cblas_mangling.h
+	cp $(SRC_BLAS)/LAPACKE/include/*.h $(PREFIX)/$(TARGET)/$(BSP)/lib/include/
+
 .PHONY: demo
 #H Build the demo application.
 demo:
diff --git a/external/BLAS/make.inc b/external/BLAS/make.inc
new file mode 100644
index 0000000..08cdb8e
--- /dev/null
+++ b/external/BLAS/make.inc
@@ -0,0 +1,82 @@
+####################################################################
+#  LAPACK make include file.                                       #
+####################################################################
+
+SHELL = /bin/sh
+
+#  CC is the C compiler, normally invoked with options CFLAGS.
+#
+CFLAGS = -O3  -march=armv7-a -mthumb -mfloat-abi=hard -mtune=cortex-a7 -mfpu=neon
+
+#  Modify the FC and FFLAGS definitions to the desired compiler
+#  and desired compiler options for your machine.  NOOPT refers to
+#  the compiler options desired when NO OPTIMIZATION is selected.
+#
+#  Note: During a regular execution, LAPACK might create NaN and Inf
+#  and handle these quantities appropriately. As a consequence, one
+#  should not compile LAPACK with flags such as -ffpe-trap=overflow.
+#
+
+FFLAGS = -O3 -march=armv7-a -mthumb -mfloat-abi=hard -mtune=cortex-a7 -mfpu=neon
+FFLAGS_DRV = $(FFLAGS)
+FFLAGS_NOOPT = -O0 -frecursive -march=armv7-a -mthumb -mfloat-abi=hard -mtune=cortex-a7 -mfpu=neon
+
+#  Define LDFLAGS to the desired linker options for your machine.
+#
+LDFLAGS =
+
+#  The archiver and the flag(s) to use when building an archive
+#  (library).  If your system has no ranlib, set RANLIB = echo.
+#
+
+#  Timer for the SECOND and DSECND routines
+#
+#  Default:  SECOND and DSECND will use a call to the
+#  EXTERNAL FUNCTION ETIME
+#TIMER = EXT_ETIME
+#  For RS6K:  SECOND and DSECND will use a call to the
+#  EXTERNAL FUNCTION ETIME_
+#TIMER = EXT_ETIME_
+#  For gfortran compiler:  SECOND and DSECND will use a call to the
+#  INTERNAL FUNCTION ETIME
+TIMER = INT_ETIME
+#  If your Fortran compiler does not provide etime (like Nag Fortran
+#  Compiler, etc...) SECOND and DSECND will use a call to the
+#  INTERNAL FUNCTION CPU_TIME
+#TIMER = INT_CPU_TIME
+#  If none of these work, you can use the NONE value.
+#  In that case, SECOND and DSECND will always return 0.
+#TIMER = NONE
+
+#  Uncomment the following line to include deprecated routines in
+#  the LAPACK library.
+#
+BUILD_DEPRECATED = Yes
+
+#  LAPACKE has the interface to some routines from tmglib.
+#  If LAPACKE_WITH_TMG is defined, add those routines to LAPACKE.
+#
+#LAPACKE_WITH_TMG = Yes
+
+#  Location of the extended-precision BLAS (XBLAS) Fortran library
+#  used for building and testing extended-precision routines.  The
+#  relevant routines will be compiled and XBLAS will be linked only
+#  if USEXBLAS is defined.
+#
+#USEXBLAS = Yes
+#XBLASLIB = -lxblas
+
+#  The location of the libraries to which you will link.  (The
+#  machine-specific, optimized BLAS library should be used whenever
+#  possible.)
+#
+BLASLIB      = $(TOPSRCDIR)/librefblas.a
+CBLASLIB     = $(TOPSRCDIR)/libcblas.a
+LAPACKLIB    = $(TOPSRCDIR)/liblapack.a
+TMGLIB       = $(TOPSRCDIR)/libtmglib.a
+LAPACKELIB   = $(TOPSRCDIR)/liblapacke.a
+
+#  DOCUMENTATION DIRECTORY
+# If you generate html pages (make html), documentation will be placed in $(DOCSDIR)/explore-html
+# If you generate man pages (make man), documentation will be placed in $(DOCSDIR)/man
+DOCSDIR       = $(TOPSRCDIR)/DOCS
diff --git a/external/lapack b/external/lapack
new file mode 160000
index 0000000..129637e
--- /dev/null
+++ b/external/lapack
@@ -0,0 +1 @@
+Subproject commit 129637ea6fb3baed0f248c7570b090eee17602bf