u-boot-xlnx: Changed MicroBlaze specific configure

* Handles generation of the config.mk, this avoids the need for a manual
  config.mk to be provided, it depends on the information provided in
  xparameters.h.
* Added 'MACHINE_XPARAMETERS' which points to a machine specific
  xparameters.h file.

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>

1 files changed, 26 insertions, 8 deletions

diff --git a/recipes-bsp/u-boot/u-boot-extra.inc b/recipes-bsp/u-boot/u-boot-extra.inc
index f07284a5..329a7754 100644
--- a/recipes-bsp/u-boot/u-boot-extra.inc
+++ b/recipes-bsp/u-boot/u-boot-extra.inc
@@ -12,14 +12,32 @@ do_deploy_append() {
         ln -sf ${DEST_ELF} ${SRC_ELF}.elf
 }
 
-# Install the MicroBlaze System configuration into the board configuration
+# Install the MicroBlaze System configuration into the board configuration,
+# and generate a u-boot specific config.mk
 do_configure_prepend () {
-        if [ "${SOC_FAMILY}" = "microblaze" ]; then
-                if [ -e ${WORKDIR}/config.mk ]; then
-                        cp ${WORKDIR}/config.mk ${S}/board/xilinx/microblaze-generic/
-                fi
-                if [ -e ${WORKDIR}/xparameters.h ]; then
-                        cp ${WORKDIR}/xparameters.h ${S}/board/xilinx/microblaze-generic/
+        if [ "${SOC_FAMILY}" = "microblaze" -a ! -z "${MACHINE_XPARAMETERS}" ]; then
+                if [ ! -z "${MACHINE_XPARAMETERS}" -a -e "${MACHINE_XPARAMETERS}" ]; then
+                        CONFIG_MK=${S}/board/xilinx/microblaze-generic/config.mk
+                        cp ${MACHINE_XPARAMETERS} ${S}/board/xilinx/microblaze-generic/xparameters.h
+
+                        # Generate the config.mk from CFLAGS and XPARAMETERS file
+                        echo "# This file is generated by the meta-xilinx layer." > ${CONFIG_MK}
+                        echo "" >> ${CONFIG_MK}
+
+                        # Export CCARGS
+                        for i in ${TUNE_CCARGS}; do
+                                echo "PLATFORM_CPPFLAGS += $i" >> ${CONFIG_MK}
+                        done
+
+                        echo "" >> ${CONFIG_MK}
+
+                        # Calculate the TEXT_BASE address at RAM_END - 4MB
+                        RAM_START=$(grep "XILINX_RAM_START" ${MACHINE_XPARAMETERS} | grep -o "0x.*$")
+                        RAM_SIZE=$(grep "XILINX_RAM_SIZE" ${MACHINE_XPARAMETERS} | grep -o "0x.*$")
+                        BASE_OFFSET=$(printf "0x%08x" "$[$RAM_START + $RAM_SIZE - 0x400000]")
+
+                        echo "TEXT_BASE = $BASE_OFFSET" >> ${CONFIG_MK}
+                        echo "CONFIG_SYS_TEXT_BASE = $BASE_OFFSET" >> ${CONFIG_MK}
                 fi
         fi
-}
+}
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