BRN:Software:Build and Distribution:Build and install an image: Difference between revisions
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= Kernel = |
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== ELF-executable compressed kernel image == |
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* Strip off some (unneeded) binary code segments |
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$ /tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc-objcopy -O binary \ |
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-R .reginfo \ |
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-R .note \ |
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-R .comment \ |
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-R .mdebug \ |
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-S /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/linux-2.6.16.7/vmlinux /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux |
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* Build loader program for decompressing LZMA-compressed at boot time |
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$ make -C /tmp/mj-build/openwrt/build_mipsel/loader-0.04 \ |
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CC=/tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc-gcc \ |
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LD=/tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc-ld \ |
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CROSS_COMPILE=/tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc- |
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* Compress the binary code (with LZMA) |
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$ cat /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux \ |
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| /tmp/mj-build/openwrt/staging_dir_mipsel/bin/lzma e \ |
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-si -so -eos -lc1 -lp2 -pb2 > /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux.lzma |
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* Make TRX headers |
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$ /tmp/mj-build/openwrt/staging_dir_mipsel/bin/trx \ |
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-o /tmp/mj-build/openwrt/bin/openwrt-brcm-2.6-jffs2-4MB.trx \ |
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/tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/loader.tmp.gz \ |
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/tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux.lzma \ |
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-a 0x10000 /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/root.jffs2-4MB |
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* Put loader and TRX image into resulting (bootable) kernel image |
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= RootFS = |
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---- |
---- |
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<span style="padding-left:0.5em">'''[[BRN:Software:Build and Distribution:RootFS|Prev]]''' | '''[[BRN:Software:Build and Distribution|Contents]]'''</span> |
<span style="padding-left:0.5em">'''[[BRN:Software:Build and Distribution:RootFS|Prev]]''' | '''[[BRN:Software:Build and Distribution|Contents]]'''</span> |
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Revision as of 12:33, 11 October 2006
Kernel
ELF-executable compressed kernel image
- Strip off some (unneeded) binary code segments
$ /tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc-objcopy -O binary \ -R .reginfo \ -R .note \ -R .comment \ -R .mdebug \ -S /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/linux-2.6.16.7/vmlinux /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux
- Build loader program for decompressing LZMA-compressed at boot time
$ make -C /tmp/mj-build/openwrt/build_mipsel/loader-0.04 \
CC=/tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc-gcc \
LD=/tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc-ld \
CROSS_COMPILE=/tmp/mj-build/openwrt/staging_dir_mipsel/bin/mipsel-linux-uclibc-
- Compress the binary code (with LZMA)
$ cat /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux \
| /tmp/mj-build/openwrt/staging_dir_mipsel/bin/lzma e \
-si -so -eos -lc1 -lp2 -pb2 > /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux.lzma
- Make TRX headers
$ /tmp/mj-build/openwrt/staging_dir_mipsel/bin/trx \
-o /tmp/mj-build/openwrt/bin/openwrt-brcm-2.6-jffs2-4MB.trx \
/tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/loader.tmp.gz \
/tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/vmlinux.lzma \
-a 0x10000 /tmp/mj-build/openwrt/build_mipsel/linux-2.6-brcm/root.jffs2-4MB
- Put loader and TRX image into resulting (bootable) kernel image