Initial commit

bootstrap.d/41-uboot.sh

@@ -0,0 +1,105 @@
+#
+# Build and Setup U-Boot
+#
+
+# Load utility functions
+. ./functions.sh
+
+# Fetch and build U-Boot bootloader
+if [ "$ENABLE_UBOOT" = true ] ; then
+  # Install c/c++ build environment inside the chroot
+  chroot_install_cc
+
+  # Copy existing U-Boot sources into chroot directory
+  if [ -n "$UBOOTSRC_DIR" ] && [ -d "$UBOOTSRC_DIR" ] ; then
+    # Copy local U-Boot sources
+    cp -r "${UBOOTSRC_DIR}" "${R}/tmp"
+  else
+    # Create temporary directory for U-Boot sources
+    temp_dir=$(as_nobody mktemp -d)
+
+    # Fetch U-Boot sources
+    as_nobody git -C "${temp_dir}" clone "${UBOOT_URL}"
+
+    # Copy downloaded U-Boot sources
+    mv "${temp_dir}/u-boot" "${R}/tmp/"
+
+    # Set permissions of the U-Boot sources
+    chown -R root:root "${R}/tmp/u-boot"
+
+    # Remove temporary directory for U-Boot sources
+    rm -fr "${temp_dir}"
+  fi
+
+  # Build and install U-Boot inside chroot
+  chroot_exec make -j"${KERNEL_THREADS}" -C /tmp/u-boot/ "${UBOOT_CONFIG}" all
+
+  # Copy compiled bootloader binary and set config.txt to load it
+  install_exec "${R}/tmp/u-boot/tools/mkimage" "${R}/usr/sbin/mkimage"
+  install_readonly "${R}/tmp/u-boot/u-boot.bin" "${BOOT_DIR}/u-boot.bin"
+  printf "\n# boot u-boot kernel\nkernel=u-boot.bin\n" >> "${BOOT_DIR}/config.txt"
+
+  # Install and setup U-Boot command file
+  install_readonly files/boot/uboot.mkimage "${BOOT_DIR}/uboot.mkimage"
+  printf "# Set the kernel boot command line\nsetenv bootargs \"earlyprintk ${CMDLINE}\"\n\n$(cat "${BOOT_DIR}"/uboot.mkimage)" > "${BOOT_DIR}/uboot.mkimage"
+
+  if [ "$ENABLE_INITRAMFS" = true ] ; then
+    # Convert generated initramfs for U-Boot using mkimage
+    chroot_exec /usr/sbin/mkimage -A "${KERNEL_ARCH}" -T ramdisk -C none -n "initramfs-${KERNEL_VERSION}" -d "/boot/firmware/initramfs-${KERNEL_VERSION}" "/boot/firmware/initramfs-${KERNEL_VERSION}.uboot"
+
+    # Remove original initramfs file
+    rm -f "${BOOT_DIR}/initramfs-${KERNEL_VERSION}"
+
+    # Configure U-Boot to load generated initramfs
+    printf "# Set initramfs file\nsetenv initramfs initramfs-${KERNEL_VERSION}.uboot\n\n$(cat "${BOOT_DIR}"/uboot.mkimage)" > "${BOOT_DIR}/uboot.mkimage"
+    printf "\nbootz \${kernel_addr_r} \${ramdisk_addr_r} \${fdt_addr_r}" >> "${BOOT_DIR}/uboot.mkimage"
+  else # ENABLE_INITRAMFS=false
+    # Remove initramfs from U-Boot mkfile
+    sed -i '/.*initramfs.*/d' "${BOOT_DIR}/uboot.mkimage"
+
+    if [ "$BUILD_KERNEL" = false ] ; then
+      # Remove dtbfile from U-Boot mkfile
+      sed -i '/.*dtbfile.*/d' "${BOOT_DIR}/uboot.mkimage"
+      printf "\nbootz \${kernel_addr_r}" >> "${BOOT_DIR}/uboot.mkimage"
+    else
+      printf "\nbootz \${kernel_addr_r} - \${fdt_addr_r}" >> "${BOOT_DIR}/uboot.mkimage"
+    fi
+  fi
+
+  if [ "$SET_ARCH" = 64 ] ; then
+    echo "Setting up config.txt to boot 64bit uboot"
+    {
+      printf "\n# 64bit-mode"
+      printf "\n# arm_control=0x200 is deprecated https://www.raspberrypi.org/documentation/configuration/config-txt/misc.md"
+      printf "\narm_64bit=1"
+    } >> "${BOOT_DIR}/config.txt"
+    
+    #in 64bit uboot booti is used instead of bootz [like in KERNEL_BIN_IMAGE=zImage (armv7)|| Image(armv8)]
+    sed -i "s|bootz|booti|g" "${BOOT_DIR}/uboot.mkimage"
+  fi
+  
+  # instead of sd, boot from usb device
+  if [ "$ENABLE_USBBOOT" = true ] ; then
+    sed -i "s|mmc|usb|g" "${BOOT_DIR}/uboot.mkimage"
+  fi
+
+  # Set mkfile to use the correct dtb file
+  sed -i "s|bcm2709-rpi-2-b.dtb|${DTB_FILE}|" "${BOOT_DIR}/uboot.mkimage"
+
+  # Set mkfile to use the correct mach id
+  if [ "$ENABLE_QEMU" = true ] ; then
+    sed -i "s/^\(setenv machid \).*/\10x000008e0/" "${BOOT_DIR}/uboot.mkimage"
+  fi
+
+  # Set mkfile to use kernel image
+  sed -i "s|kernel7.img|${KERNEL_IMAGE}|" "${BOOT_DIR}/uboot.mkimage"
+
+  # Remove all leading blank lines
+  sed -i "/./,\$!d" "${BOOT_DIR}/uboot.mkimage"
+
+  # Generate U-Boot bootloader image
+  chroot_exec /usr/sbin/mkimage -A "${KERNEL_ARCH}" -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n "RPi${RPI_MODEL}" -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr
+
+  # Remove U-Boot sources
+  rm -fr "${R}/tmp/u-boot"
+fi