initial buildroot for linux 5.15

board/stmicroelectronics/common/stm32f4xx/stm32-post-build.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# Kernel is built without devpts support
+sed -i '/^devpts/d' ${TARGET_DIR}/etc/fstab
+
+# Kernel is built without network support
+rm -f ${TARGET_DIR}/etc/init.d/S40network
+rm -rf ${TARGET_DIR}/etc/network/

board/stmicroelectronics/common/stm32mp157/genimage.cfg.template

@@ -0,0 +1,23 @@
+image sdcard.img {
+	hdimage {
+		gpt = "true"
+	}
+
+	partition fsbl1 {
+		image = "%ATFBIN%"
+	}
+
+	partition fsbl2 {
+		image = "%ATFBIN%"
+	}
+
+	partition ssbl {
+		image = "u-boot.stm32"
+		size = 2M
+	}
+
+	partition rootfs {
+		image = "rootfs.ext4"
+		bootable = "yes"
+	}
+}

board/stmicroelectronics/common/stm32mp157/post-image.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+#
+# atf_image extracts the ATF binary image from DTB_FILE_NAME that appears in
+# BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES in ${BR_CONFIG},
+# then prints the corresponding file name for the genimage
+# configuration file
+#
+atf_image()
+{
+	local ATF_VARIABLES="$(sed -n 's/^BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES="\([\/a-zA-Z0-9_=. \-]*\)"$/\1/p' ${BR2_CONFIG})"
+
+	if grep -Eq "DTB_FILE_NAME=stm32mp157c-dk2.dtb" <<< ${ATF_VARIABLES}; then
+		echo "tf-a-stm32mp157c-dk2.stm32"
+	elif grep -Eq "DTB_FILE_NAME=stm32mp157a-dk1.dtb" <<< ${ATF_VARIABLES}; then
+                echo "tf-a-stm32mp157a-dk1.stm32"
+	elif grep -Eq "DTB_FILE_NAME=stm32mp157a-avenger96.dtb" <<< ${ATF_VARIABLES}; then
+                echo "tf-a-stm32mp157a-avenger96.stm32"
+	fi
+}
+
+main()
+{
+	local ATFBIN="$(atf_image)"
+	local GENIMAGE_CFG="$(mktemp --suffix genimage.cfg)"
+	local GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"
+
+	sed -e "s/%ATFBIN%/${ATFBIN}/" \
+		board/stmicroelectronics/common/stm32mp157/genimage.cfg.template > ${GENIMAGE_CFG}
+
+	support/scripts/genimage.sh -c ${GENIMAGE_CFG}
+
+	rm -f ${GENIMAGE_CFG}
+
+	exit $?
+}
+
+main $@