Raspi2-3_GenImage Files · bootstrap.d/41-uboot.sh · Collaboration Tremplin des Sciences

Added to README: Understanding the script

Filip Pytloun - - Load All Authors

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             41-uboot.sh
        
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      #

      # Setup Uboot

      #

      . ./functions.sh

      # Install gcc/c++ build environment inside the chroot

      if [ "$ENABLE_UBOOT" = true ] || [ "$ENABLE_FBTURBO" = true ]; then

        chroot_exec apt-get install -q -y --force-yes --no-install-recommends linux-compiler-gcc-4.9-arm g++ make bc

      fi

      # Fetch and build U-Boot bootloader

      if [ "$ENABLE_UBOOT" = true ] ; then

        # Fetch U-Boot bootloader sources

        git -C $R/tmp clone git://git.denx.de/u-boot.git

        # Build and install U-Boot inside chroot

        chroot_exec make -C /tmp/u-boot/ rpi_2_defconfig all

        # Copy compiled bootloader binary and set config.txt to load it

        cp $R/tmp/u-boot/u-boot.bin $R/boot/firmware/

        printf "\n# boot u-boot kernel\nkernel=u-boot.bin\n" >> $R/boot/firmware/config.txt

        # Set U-Boot command file

        cat <<EOM >$R/boot/firmware/uboot.mkimage

      # Tell Linux that it is booting on a Raspberry Pi2

      setenv machid 0x00000c42

      # Set the kernel boot command line

      setenv bootargs "earlyprintk ${CMDLINE}"

      # Save these changes to u-boot's environment

      saveenv

      # Load the existing Linux kernel into RAM

      fatload mmc 0:1 \${kernel_addr_r} kernel7.img

      # Boot the kernel we have just loaded

      bootz \${kernel_addr_r}

      EOM

        # Generate U-Boot image from command file

        chroot_exec mkimage -A arm -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n "RPi2 Boot Script" -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr

      fi

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				#
				# Setup Uboot
				#

				. ./functions.sh

				# Install gcc/c++ build environment inside the chroot
				if [ "$ENABLE_UBOOT" = true ] \|\| [ "$ENABLE_FBTURBO" = true ]; then
				chroot_exec apt-get install -q -y --force-yes --no-install-recommends linux-compiler-gcc-4.9-arm g++ make bc
				fi

				# Fetch and build U-Boot bootloader
				if [ "$ENABLE_UBOOT" = true ] ; then
				# Fetch U-Boot bootloader sources
				git -C $R/tmp clone git://git.denx.de/u-boot.git

				# Build and install U-Boot inside chroot
				chroot_exec make -C /tmp/u-boot/ rpi_2_defconfig all

				# Copy compiled bootloader binary and set config.txt to load it
				cp $R/tmp/u-boot/u-boot.bin $R/boot/firmware/
				printf "\n# boot u-boot kernel\nkernel=u-boot.bin\n" >> $R/boot/firmware/config.txt

				# Set U-Boot command file
				cat <<EOM >$R/boot/firmware/uboot.mkimage
				# Tell Linux that it is booting on a Raspberry Pi2
				setenv machid 0x00000c42

				# Set the kernel boot command line
				setenv bootargs "earlyprintk ${CMDLINE}"

				# Save these changes to u-boot's environment
				saveenv

				# Load the existing Linux kernel into RAM
				fatload mmc 0:1 \${kernel_addr_r} kernel7.img

				# Boot the kernel we have just loaded
				bootz \${kernel_addr_r}
				EOM

				# Generate U-Boot image from command file
				chroot_exec mkimage -A arm -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n "RPi2 Boot Script" -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr
				fi