| Line 39... |
Line 39... |
export AMBER_BASE=/proj/opencores-svn/trunk
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export AMBER_BASE=/proj/opencores-svn/trunk
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# Pick a directory on your system where you want to build Linux
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# Pick a directory on your system where you want to build Linux
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export LINUX_WORK_DIR=/proj/amber2-linux
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export LINUX_WORK_DIR=/proj/amber2-linux
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export AMBER_CROSSTOOL=arm-none-linux-gnueabi
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# Create the Linux build directory
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# Create the Linux build directory
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test -e ${LINUX_WORK_DIR} || mkdir ${LINUX_WORK_DIR}
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test -e ${LINUX_WORK_DIR} || mkdir ${LINUX_WORK_DIR}
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cd ${LINUX_WORK_DIR}
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cd ${LINUX_WORK_DIR}
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# Download the kernel source
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# Download the kernel source
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wget http://www.kernel.org/pub/linux/kernel/v2.4/linux-2.4.27.tar.gz
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wget http://www.kernel.org/pub/linux/kernel/v2.4/linux-2.4.27.tar.gz
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tar zxf linux-2.4.27.tar.gz
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tar zxf linux-2.4.27.tar.gz
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ln -s linux-2.4.27 linux
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ln -s linux-2.4.27 linux
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cd linux
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cd ${LINUX_WORK_DIR}/linux
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#Apply 2 patch files
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#Apply 2 patch files
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cp ${AMBER_BASE}/sw/vmlinux/patch-2.4.27-vrs1.bz2 .
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cp ${AMBER_BASE}/sw/vmlinux/patch-2.4.27-vrs1.bz2 .
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cp ${AMBER_BASE}/sw/vmlinux/patch-2.4.27-amber2.bz2 .
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cp ${AMBER_BASE}/sw/vmlinux/patch-2.4.27-amber2.bz2 .
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bzip2 -d patch-2.4.27-vrs1.bz2
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bzip2 -d patch-2.4.27-vrs1.bz2
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| Line 78... |
Line 75... |
cp vmlinux.mem $AMBER_BASE/sw/vmlinux/vmlinux.mem
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cp vmlinux.mem $AMBER_BASE/sw/vmlinux/vmlinux.mem
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cp vmlinux.dis $AMBER_BASE/sw/vmlinux/vmlinux.dis
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cp vmlinux.dis $AMBER_BASE/sw/vmlinux/vmlinux.dis
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# Run the Linux simulation to verify that you have a good kernel image
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# Run the Linux simulation to verify that you have a good kernel image
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cd $AMBER_BASE/hw/sim
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cd $AMBER_BASE/hw/sim
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run vmlinux
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./run vmlinux
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# +++++++++++++++++++++++++++++++++++++++++++
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# +++++++++++++++++++++++++++++++++++++++++++
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# How to create your own initrd file
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# How to create your own initrd file
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# +++++++++++++++++++++++++++++++++++++++++++
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# +++++++++++++++++++++++++++++++++++++++++++
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| Line 101... |
Line 98... |
test -e ${LINUX_WORK_DIR} || mkdir ${LINUX_WORK_DIR}
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test -e ${LINUX_WORK_DIR} || mkdir ${LINUX_WORK_DIR}
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cd ${LINUX_WORK_DIR}
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cd ${LINUX_WORK_DIR}
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# Need root permissions to mount disks
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# Need root permissions to mount disks
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sudo dd if=/dev/zero of=initrd bs=200k count=1
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sudo dd if=/dev/zero of=initrd bs=200k count=1
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#sudo dd if=/dev/zero of=initrd bs=400k count=1
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#sudo dd if=/dev/zero of=initrd bs=800k count=1
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sudo mke2fs -F -m0 -b 1024 initrd
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sudo mke2fs -F -m0 -b 1024 initrd
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mkdir mnt
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mkdir mnt
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sudo mount -t ext2 -o loop initrd ${LINUX_WORK_DIR}/mnt
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sudo mount -t ext2 -o loop initrd ${LINUX_WORK_DIR}/mnt
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| Line 123... |
Line 120... |
sudo mknod ${LINUX_WORK_DIR}/mnt/dev/loop0 b 7 0
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sudo mknod ${LINUX_WORK_DIR}/mnt/dev/loop0 b 7 0
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sudo chmod 600 ${LINUX_WORK_DIR}/mnt/dev/*
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sudo chmod 600 ${LINUX_WORK_DIR}/mnt/dev/*
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sudo cp $AMBER_BASE/sw/hello-world/hello-world.flt ${LINUX_WORK_DIR}/mnt/sbin/init
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sudo cp $AMBER_BASE/sw/hello-world/hello-world.flt ${LINUX_WORK_DIR}/mnt/sbin/init
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#sudo cp $AMBER_BASE/sw/dhry/dhry.flt ${LINUX_WORK_DIR}/mnt/sbin/init
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#sudo cp $AMBER_BASE/sw/dhry/dhry.flt ${LINUX_WORK_DIR}/mnt/sbin/init
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#sudo cp /proj/amber2-linux/busybox-1.18.5/busybox ${LINUX_WORK_DIR}/mnt/sbin/init
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sudo chmod +x ${LINUX_WORK_DIR}/mnt/sbin/init
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sudo chmod +x ${LINUX_WORK_DIR}/mnt/sbin/init
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# Check
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# Check
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df ${LINUX_WORK_DIR}/mnt
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df ${LINUX_WORK_DIR}/mnt
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# Unmount
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# Unmount
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sudo umount ${LINUX_WORK_DIR}/mnt
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sudo umount ${LINUX_WORK_DIR}/mnt
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rm -rf ${LINUX_WORK_DIR}/mnt
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sudo rm -rf ${LINUX_WORK_DIR}/mnt
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cp initrd $AMBER_BASE/sw/vmlinux/initrd-
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cp initrd $AMBER_BASE/sw/vmlinux/initrd-
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#cp initrd $AMBER_BASE/sw/vmlinux/initrd-400k-busybox
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#cp initrd $AMBER_BASE/sw/vmlinux/initrd-800k-busybox
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---
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---
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If 200k is not large enough, you can change the size as follows.
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If 200k is not large enough, you can change the size as follows.
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You'll need to change a couple of values in the ATAG data structure defined in the
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You'll need to change a couple of values in the ATAG data structure defined in the
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