HOWTO: Creating a root file system < 32 MB
HOWTO: Creating a root file system < 32 MB
Objective:
Create a Linux root file system that is under 32MB for a MPC8260 target.
Direction:
The size of the root file system in HardHat Linux, HHL, 2.0 (169MB) is significantly larger than that of HHL 1.2 (94MB). The capabilities in the HHL 1.2 root file system, are more than adequate for an embedded board. We will start with all the packages in HHL 1.2, and removed the fluff until we hit our target size.
Tools used:
The following tools were used to determine the purpose and files contained in the various packages:
gnorpm -q <package-name>
rpm -q -i <package-name>
Display package information
rpm -q --list <package-name>
List files in package.
rpm -q --docfiles <package-name>
List only documentation files (implies -l).
1. Obtain the HHL 1.2 packages from MontaVista:
ftp://ftp.mvista.com/pub/...
Note: I created a CDROM with *ALL* the packages to make it easy to
install something that got removed.
2. Mount the HardHat Linux 1.2 PPC CDROM under /mnt/cdrom
3. Install all *.i386.rpm and *.noarch.rpm RPM's
cd /mnt/cdrom/ppc_82xx/RPMS
rpm -ihv find *.i386.rpm *.noarch.rpm | grep -v busybox cd /mnt/cdrom/common
rpm -ihv *.noarch.rpm
4. The following packages (74) were installed:
hhl-kernel-2.2.14-1.2.2-1 hhl-kernel-2.4.0-test2-1.2.2-1 hhl-ppc_82xx-apache-1.3.12-2 hhl-ppc_82xx-apache-devel-1.3.12-2 hhl-ppc_82xx-apache-html_manual-1.3.12-2 hhl-ppc_82xx-ash-0.2-2 hhl-ppc_82xx-bash-2.03-6 hhl-ppc_82xx-binutils-2.10.0.12-1 hhl-ppc_82xx-bonnie-1-0 hhl-ppc_82xx-c++-2.95.2-13 hhl-ppc_82xx-cpio-2.4.2-1 hhl-ppc_82xx-dhcp-2.0-0 hhl-ppc_82xx-diffutils-2.7-1 hhl-ppc_82xx-e2fsprogs-1.18-1 hhl-ppc_82xx-filesystem-2.0-12 hhl-ppc_82xx-fileutils-4.0-2 hhl-ppc_82xx-findutils-4.1-1 hhl-ppc_82xx-ftp-0.15-4 hhl-ppc_82xx-ftpd-0.11-3 hhl-ppc_82xx-gated-1-1 hhl-ppc_82xx-gawk-3.0.4-1 hhl-ppc_82xx-gcc-2.95.2-13 hhl-ppc_82xx-gdb-5.0-1 hhl-ppc_82xx-gdb-client-5.0-1 hhl-ppc_82xx-gdb-server-5.0-1 hhl-ppc_82xx-getty_ps-2.0.7j-0 hhl-ppc_82xx-glibc-2.1.3-1e hhl-ppc_82xx-gpm-1.17.9-1 hhl-ppc_82xx-grep-2.4-1 hhl-ppc_82xx-gzip-1.2.4-2 hhl-ppc_82xx-inetd-0.10-6 hhl-ppc_82xx-ipchains-1.3.9-1 hhl-ppc_82xx-kernel-headers-2.4.0-test2-1.2.2-1 hhl-ppc_82xx-ldconfig-1.9.5-2 hhl-ppc_82xx-libstdc++-2.10.0-13 hhl-ppc_82xx-libtermcap-2.0.8-3 hhl-ppc_82xx-modutils-2.1.121-2 hhl-ppc_82xx-netperf-2.1pl3-1 hhl-ppc_82xx-net-tools-1.53-3 hhl-ppc_82xx-pciutils-2.1.8-0 hhl-ppc_82xx-pdisk-0.8a-1 hhl-ppc_82xx-perl-5.00503-6 hhl-ppc_82xx-ping-0.10-6 hhl-ppc_82xx-popt-1.4-1 hhl-ppc_82xx-procps-2.0.4-2 hhl-ppc_82xx-psmisc-18-2 hhl-ppc_82xx-pump-0.7.2-1 hhl-ppc_82xx-pvm-3.4.3-0 hhl-ppc_82xx-sash-3.4-5 hhl-ppc_82xx-sbc8260-lsp-2.4.0-test2-1.2.2-3 hhl-ppc_82xx-sbc8260-lsp-binaries-2.4.0-test2-1.2.2-3 hhl-ppc_82xx-sbc8260-tools-2.4.0-test2-1.2.2-3 hhl-ppc_82xx-sed-3.02-1 hhl-ppc_82xx-sh-utils-2.0-4 hhl-ppc_82xx-sp8240-lsp-2.4.0-test2-1.2.2-2 hhl-ppc_82xx-sp8240-lsp-binaries-2.4.0-test2-1.2.2-2 hhl-ppc_82xx-strace-4.2-1 hhl-ppc_82xx-sysvinit-2.77-6 hhl-ppc_82xx-tar-1.13.11-2 hhl-ppc_82xx-tcpdump-3.4-1 hhl-ppc_82xx-telnet-4.4.2-3 hhl-ppc_82xx-telnetd-0.10-4 hhl-ppc_82xx-termcap-9.12.6-2 hhl-ppc_82xx-textutils-2.0-2 hhl-ppc_82xx-tftp-0.15-2 hhl-ppc_82xx-ucd-snmp-4.1.1-2 hhl-ppc_82xx-ucd-snmp-devel-4.1.1-2 hhl-ppc_82xx-ucd-snmp-utils-4.1.1-2 hhl-ppc_82xx-util-linux-2.10m-1 hhl-ppc_82xx-vi-5.6-1
hhl-ppc_82xx-webs-2.1-4 hhl-ppc_82xx-zlib-1.1.3-2
hhl-remove-1-0
hhl-rpmconfig-0.14-1
dell 345} du -h -s /opt/hardhat/devkit/ppc/82xx/target
94M /opt/hardhat/devkit/ppc/82xx/target
5. Remove the web server support (~5MB)
rpm --erase hhl-ppc_82xx-apache-html_manual-1.3.12-2 rpm --erase hhl-ppc_82xx-apache-devel-1.3.12-2 rpm --erase hhl-ppc_82xx-apache-1.3.12-2
rpm --erase hhl-ppc_82xx-webs-2.1-4
dell 366} du -h -s /opt/hardhat/devkit/ppc/82xx/target
89M /opt/hardhat/devkit/ppc/82xx/target
6. Remove the SNMP support (~5MB)
rpm --erase hhl-ppc_82xx-ucd-snmp-utils-4.1.1-2
rpm --erase hhl-ppc_82xx-ucd-snmp-devel-4.1.1-2
rpm --erase hhl-ppc_82xx-ucd-snmp-4.1.1-2
dell 374} du -h -s /opt/hardhat/devkit/ppc/82xx/target
84M /opt/hardhat/devkit/ppc/82xx/target
7. Removing the Linux Support Packages, LSP, and tools (~5MB)
We are using the Linux kernels from the BitKeeper repositories at bk://ppc.bkserver.net/linuxppc_2_4 and bk://ppc.bkserver.net/linuxppc_2_4_devel, so we don't need these older Linux bits.
rpm --erase hhl-ppc_82xx-sp8240-lsp-binaries-2.4.0-test2-1.2.2-2 rpm --erase hhl-ppc_82xx-sbc8260-lsp-binaries-2.4.0-test2-1.2.2-3 rpm --erase hhl-ppc_82xx-sp8240-lsp-2.4.0-test2-1.2.2-2 rpm --erase hhl-ppc_82xx-sbc8260-lsp-2.4.0-test2-1.2.2-3 rpm --erase hhl-ppc_82xx-kernel-headers-2.4.0-test2-1.2.2-1 rpm --erase hhl-ppc_82xx-sbc8260-tools-2.4.0-test2-1.2.2-3
dell 391} du -h -s /opt/hardhat/devkit/ppc/82xx/target
79M /opt/hardhat/devkit/ppc/82xx/target
8. The MPC8260 doesn't have a PCI bus or a hard disk drive
rpm --erase hhl-ppc_82xx-pciutils-2.1.8-0
rpm --erase hhl-ppc_82xx-pdisk-0.8a-1
dell 405} du -h -s /opt/hardhat/devkit/ppc/82xx/target
79M /opt/hardhat/devkit/ppc/82xx/target
9. We are operating a standalone board, not as a server for other networked devices. We can remove DHCP, gated, ipchains, PVM, etc. (~16MB)
We are using PPCBoot to bring up Linux, and it supports DHCP. This means that DHCP client support (pump) can also be removed.
rpm --erase hhl-ppc_82xx-dhcp-2.0-0
rpm --erase hhl-ppc_82xx-gated-1-1
rpm --erase hhl-ppc_82xx-ipchains-1.3.9-1
rpm --erase hhl-ppc_82xx-pvm-3.4.3-0
rpm --erase hhl-ppc_82xx-pump-0.7.2-1
dell 442} du -h -s /opt/hardhat/devkit/ppc/82xx/target
63M /opt/hardhat/devkit/ppc/82xx/target
10. The following Linux kernel source packages can be removed since we are using newer bits. See item 7.
rpm --erase hhl-kernel-2.2.14-1.2.2-1
rpm --erase hhl-kernel-2.4.0-test2-1.2.2-1
dell 464} du -h -s /opt/hardhat/devkit/ppc/82xx/target
63M /opt/hardhat/devkit/ppc/82xx/target
11. Since we don't have a disk drive, bonnie, a disk r/w perfomance tool can be removed.
rpm --erase hhl-ppc_82xx-bonnie-1-0
12. An embedded board doesn't have a mouse.
rpm --erase hhl-ppc_82xx-gpm-1.17.9-1
dell 494} du -h -s /opt/hardhat/devkit/ppc/82xx/target
63M /opt/hardhat/devkit/ppc/82xx/target
13. The following static libaries can be removed since they are only present in the target root file system. They don't get referenced from inside of /opt/hardhat/devkit/ppc/82xx/powerpc-hardhat-linux/lib/. (~3MB)
-r--r--r-- 1 root root 43688 Aug 8 2000 ./libcom_err.a -r--r--r-- 1 root root 313350 Aug 8 2000 ./libe2p.a -r--r--r-- 1 root root 1421020 Aug 8 2000 ./libext2fs.a -r--r--r-- 1 root root 250526 Aug 8 2000 ./libss.a -r--r--r-- 1 root root 154044 Aug 8 2000 ./libuuid.a
(cd /opt/hardhat/devkit/ppc/82xx/target/lib;\
find . -name '*\.a' | egrep 'libcom_err|libe2p|libext2fs|libss|libuuid' |\
xargs rm)
dell 534} du -h -s /opt/hardhat/devkit/ppc/82xx/target
60M /opt/hardhat/devkit/ppc/82xx/target
14. Perl is nice to have, but on an embedded board I can live without it. (~16MB)
rpm --erase hhl-ppc_82xx-perl-5.00503-6
dell 559} du -h -s /opt/hardhat/devkit/ppc/82xx/target
46M /opt/hardhat/devkit/ppc/82xx/target
15. Stripping all the files in the target root file system (~19MB)
cd /opt/hardhat/devkit/ppc/82xx/target
find . -type f -exec /opt/hardhat/devkit/ppc/82xx/bin/ppc_82xx-strip {} \;
dell 584} du -h -s /opt/hardhat/devkit/ppc/82xx/target
27M /opt/hardhat/devkit/ppc/82xx/target
16. The following packages (49) are left:
hhl-ppc_82xx-ash-0.2-2
hhl-ppc_82xx-bash-2.03-6
hhl-ppc_82xx-binutils-2.10.0.12-1
hhl-ppc_82xx-c++-2.95.2-13
hhl-ppc_82xx-cpio-2.4.2-1
hhl-ppc_82xx-diffutils-2.7-1
hhl-ppc_82xx-e2fsprogs-1.18-1
hhl-ppc_82xx-filesystem-2.0-12
hhl-ppc_82xx-fileutils-4.0-2
hhl-ppc_82xx-findutils-4.1-1
hhl-ppc_82xx-ftp-0.15-4
hhl-ppc_82xx-ftpd-0.11-3
hhl-ppc_82xx-gawk-3.0.4-1
hhl-ppc_82xx-gcc-2.95.2-13
hhl-ppc_82xx-gdb-5.0-1
hhl-ppc_82xx-gdb-client-5.0-1
hhl-ppc_82xx-gdb-server-5.0-1
hhl-ppc_82xx-getty_ps-2.0.7j-0
hhl-ppc_82xx-glibc-2.1.3-1e
hhl-ppc_82xx-grep-2.4-1
hhl-ppc_82xx-gzip-1.2.4-2
hhl-ppc_82xx-inetd-0.10-6
hhl-ppc_82xx-ldconfig-1.9.5-2
hhl-ppc_82xx-libstdc++-2.10.0-13
hhl-ppc_82xx-libtermcap-2.0.8-3
hhl-ppc_82xx-modutils-2.1.121-2
hhl-ppc_82xx-netperf-2.1pl3-1
hhl-ppc_82xx-net-tools-1.53-3
hhl-ppc_82xx-ping-0.10-6
hhl-ppc_82xx-popt-1.4-1
hhl-ppc_82xx-procps-2.0.4-2
hhl-ppc_82xx-psmisc-18-2
hhl-ppc_82xx-sash-3.4-5
hhl-ppc_82xx-sed-3.02-1
hhl-ppc_82xx-sh-utils-2.0-4
hhl-ppc_82xx-strace-4.2-1
hhl-ppc_82xx-sysvinit-2.77-6
hhl-ppc_82xx-tar-1.13.11-2
hhl-ppc_82xx-tcpdump-3.4-1
hhl-ppc_82xx-telnet-4.4.2-3
hhl-ppc_82xx-telnetd-0.10-4
hhl-ppc_82xx-termcap-9.12.6-2
hhl-ppc_82xx-textutils-2.0-2
hhl-ppc_82xx-tftp-0.15-2
hhl-ppc_82xx-util-linux-2.10m-1
hhl-ppc_82xx-vi-5.6-1
hhl-ppc_82xx-zlib-1.1.3-2
hhl-remove-1-0
hhl-rpmconfig-0.14-1
17. It we don't care about locales, different characters set, etc. We can save another ~12MB. This means we could get the root file system down to ~15MB. However, I am happy to stop at 27 MB since I hit my goal of being under 32 MB.
1.8M /opt/hardhat/devkit/ppc/82xx/target/lib/gconv 4.0M /opt/hardhat/devkit/ppc/82xx/target/share/locale 7.0M /opt/hardhat/devkit/ppc/82xx/target/share/i18n
18. I kept going with this exercise, and got the root file system down under 8 MB. The remaining packages at this point are:
hhl-ppc_82xx-bash-2.03-6
hhl-ppc_82xx-binutils-2.10.0.12-1
hhl-ppc_82xx-c++-2.95.2-13
hhl-ppc_82xx-filesystem-2.0-12
hhl-ppc_82xx-fileutils-4.0-2
hhl-ppc_82xx-gcc-2.95.2-13
hhl-ppc_82xx-gdb-client-5.0-1
hhl-ppc_82xx-getty_ps-2.0.7j-0
hhl-ppc_82xx-glibc-2.1.3-1e
hhl-ppc_82xx-inetd-0.10-6
hhl-ppc_82xx-ldconfig-1.9.5-2
hhl-ppc_82xx-libstdc++-2.10.0-13
hhl-ppc_82xx-libtermcap-2.0.8-3
hhl-ppc_82xx-modutils-2.1.121-2
hhl-ppc_82xx-net-tools-1.53-3
hhl-ppc_82xx-popt-1.4-1
hhl-ppc_82xx-procps-2.0.4-2
hhl-ppc_82xx-psmisc-18-2
hhl-ppc_82xx-sh-utils-2.0-4
hhl-ppc_82xx-sysvinit-2.77-6
hhl-ppc_82xx-telnet-4.4.2-3
hhl-ppc_82xx-telnetd-0.10-4
hhl-ppc_82xx-termcap-9.12.6-2
hhl-ppc_82xx-util-linux-2.10m-1
hhl-ppc_82xx-zlib-1.1.3-2
dell 126} du -s -k /opt/hardhat/devkit/ppc/82xx/target
7853 /opt/hardhat/devkit/ppc/82xx/target
------------------\\----------------------\\----------------------------
Jon Diekema | | Smiths Industries (616) 241-8310 | | 3290 Patterson Avenue, SE [email protected] \\ \\ Grand Rapids, MI 49512-1991
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Hi All,
Can anybody please tell me how do I create a root filesys for my mpx8xx
target.
Thanks in advance,
Kapil.
-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of diekema_jon
Sent: Friday, August 31, 2001 6:09 PM
To: [email protected]
Subject: HOWTO: Creating a root file system < 32 MB
HOWTO: Creating a root file system < 32 MB
Objective:
Create a Linux root file system that is under 32MB for a MPC8260 target.
Direction:
The size of the root file system in HardHat Linux, HHL, 2.0 (169MB) is significantly larger than that of HHL 1.2 (94MB). The capabilities in the HHL 1.2 root file system, are more than adequate for an embedded board. We will start with all the packages in HHL 1.2, and removed the fluff until we hit our target size.
Tools used:
The following tools were used to determine the purpose and files contained in the various packages:
gnorpm -q <package-name>
rpm -q -i <package-name>
Display package information
rpm -q --list <package-name>
List files in package.
rpm -q --docfiles <package-name>
List only documentation files (implies -l).
1. Obtain the HHL 1.2 packages from MontaVista:
ftp://ftp.mvista.com/pub/...
Note: I created a CDROM with *ALL* the packages to make it easy to
install something that got removed.
2. Mount the HardHat Linux 1.2 PPC CDROM under /mnt/cdrom
3. Install all *.i386.rpm and *.noarch.rpm RPM's
cd /mnt/cdrom/ppc_82xx/RPMS
rpm -ihv find *.i386.rpm *.noarch.rpm | grep -v busybox cd /mnt/cdrom/common
rpm -ihv *.noarch.rpm
4. The following packages (74) were installed:
hhl-kernel-2.2.14-1.2.2-1 hhl-kernel-2.4.0-test2-1.2.2-1 hhl-ppc_82xx-apache-1.3.12-2 hhl-ppc_82xx-apache-devel-1.3.12-2 hhl-ppc_82xx-apache-html_manual-1.3.12-2 hhl-ppc_82xx-ash-0.2-2 hhl-ppc_82xx-bash-2.03-6 hhl-ppc_82xx-binutils-2.10.0.12-1 hhl-ppc_82xx-bonnie-1-0 hhl-ppc_82xx-c++-2.95.2-13 hhl-ppc_82xx-cpio-2.4.2-1 hhl-ppc_82xx-dhcp-2.0-0 hhl-ppc_82xx-diffutils-2.7-1 hhl-ppc_82xx-e2fsprogs-1.18-1 hhl-ppc_82xx-filesystem-2.0-12 hhl-ppc_82xx-fileutils-4.0-2 hhl-ppc_82xx-findutils-4.1-1 hhl-ppc_82xx-ftp-0.15-4 hhl-ppc_82xx-ftpd-0.11-3 hhl-ppc_82xx-gated-1-1 hhl-ppc_82xx-gawk-3.0.4-1 hhl-ppc_82xx-gcc-2.95.2-13 hhl-ppc_82xx-gdb-5.0-1 hhl-ppc_82xx-gdb-client-5.0-1 hhl-ppc_82xx-gdb-server-5.0-1 hhl-ppc_82xx-getty_ps-2.0.7j-0 hhl-ppc_82xx-glibc-2.1.3-1e hhl-ppc_82xx-gpm-1.17.9-1 hhl-ppc_82xx-grep-2.4-1 hhl-ppc_82xx-gzip-1.2.4-2 hhl-ppc_82xx-inetd-0.10-6 hhl-ppc_82xx-ipchains-1.3.9-1 hhl-ppc_82xx-kernel-headers-2.4.0-test2-1.2.2-1 hhl-ppc_82xx-ldconfig-1.9.5-2 hhl-ppc_82xx-libstdc++-2.10.0-13 hhl-ppc_82xx-libtermcap-2.0.8-3 hhl-ppc_82xx-modutils-2.1.121-2 hhl-ppc_82xx-netperf-2.1pl3-1 hhl-ppc_82xx-net-tools-1.53-3 hhl-ppc_82xx-pciutils-2.1.8-0 hhl-ppc_82xx-pdisk-0.8a-1 hhl-ppc_82xx-perl-5.00503-6 hhl-ppc_82xx-ping-0.10-6 hhl-ppc_82xx-popt-1.4-1 hhl-ppc_82xx-procps-2.0.4-2 hhl-ppc_82xx-psmisc-18-2 hhl-ppc_82xx-pump-0.7.2-1 hhl-ppc_82xx-pvm-3.4.3-0 hhl-ppc_82xx-sash-3.4-5 hhl-ppc_82xx-sbc8260-lsp-2.4.0-test2-1.2.2-3 hhl-ppc_82xx-sbc8260-lsp-binaries-2.4.0-test2-1.2.2-3 hhl-ppc_82xx-sbc8260-tools-2.4.0-test2-1.2.2-3 hhl-ppc_82xx-sed-3.02-1 hhl-ppc_82xx-sh-utils-2.0-4 hhl-ppc_82xx-sp8240-lsp-2.4.0-test2-1.2.2-2 hhl-ppc_82xx-sp8240-lsp-binaries-2.4.0-test2-1.2.2-2 hhl-ppc_82xx-strace-4.2-1 hhl-ppc_82xx-sysvinit-2.77-6 hhl-ppc_82xx-tar-1.13.11-2 hhl-ppc_82xx-tcpdump-3.4-1 hhl-ppc_82xx-telnet-4.4.2-3 hhl-ppc_82xx-telnetd-0.10-4 hhl-ppc_82xx-termcap-9.12.6-2 hhl-ppc_82xx-textutils-2.0-2 hhl-ppc_82xx-tftp-0.15-2 hhl-ppc_82xx-ucd-snmp-4.1.1-2 hhl-ppc_82xx-ucd-snmp-devel-4.1.1-2 hhl-ppc_82xx-ucd-snmp-utils-4.1.1-2 hhl-ppc_82xx-util-linux-2.10m-1 hhl-ppc_82xx-vi-5.6-1
hhl-ppc_82xx-webs-2.1-4 hhl-ppc_82xx-zlib-1.1.3-2
hhl-remove-1-0
hhl-rpmconfig-0.14-1
dell 345} du -h -s /opt/hardhat/devkit/ppc/82xx/target
94M /opt/hardhat/devkit/ppc/82xx/target
5. Remove the web server support (~5MB)
rpm --erase hhl-ppc_82xx-apache-html_manual-1.3.12-2 rpm --erase hhl-ppc_82xx-apache-devel-1.3.12-2 rpm --erase hhl-ppc_82xx-apache-1.3.12-2
rpm --erase hhl-ppc_82xx-webs-2.1-4
dell 366} du -h -s /opt/hardhat/devkit/ppc/82xx/target
89M /opt/hardhat/devkit/ppc/82xx/target
6. Remove the SNMP support (~5MB)
rpm --erase hhl-ppc_82xx-ucd-snmp-utils-4.1.1-2
rpm --erase hhl-ppc_82xx-ucd-snmp-devel-4.1.1-2
rpm --erase hhl-ppc_82xx-ucd-snmp-4.1.1-2
dell 374} du -h -s /opt/hardhat/devkit/ppc/82xx/target
84M /opt/hardhat/devkit/ppc/82xx/target
7. Removing the Linux Support Packages, LSP, and tools (~5MB)
We are using the Linux kernels from the BitKeeper repositories at bk://ppc.bkserver.net/linuxppc_2_4 and bk://ppc.bkserver.net/linuxppc_2_4_devel, so we don't need these older Linux bits.
rpm --erase hhl-ppc_82xx-sp8240-lsp-binaries-2.4.0-test2-1.2.2-2 rpm --erase hhl-ppc_82xx-sbc8260-lsp-binaries-2.4.0-test2-1.2.2-3 rpm --erase hhl-ppc_82xx-sp8240-lsp-2.4.0-test2-1.2.2-2 rpm --erase hhl-ppc_82xx-sbc8260-lsp-2.4.0-test2-1.2.2-3 rpm --erase hhl-ppc_82xx-kernel-headers-2.4.0-test2-1.2.2-1 rpm --erase hhl-ppc_82xx-sbc8260-tools-2.4.0-test2-1.2.2-3
dell 391} du -h -s /opt/hardhat/devkit/ppc/82xx/target
79M /opt/hardhat/devkit/ppc/82xx/target
8. The MPC8260 doesn't have a PCI bus or a hard disk drive
rpm --erase hhl-ppc_82xx-pciutils-2.1.8-0
rpm --erase hhl-ppc_82xx-pdisk-0.8a-1
dell 405} du -h -s /opt/hardhat/devkit/ppc/82xx/target
79M /opt/hardhat/devkit/ppc/82xx/target
9. We are operating a standalone board, not as a server for other networked devices. We can remove DHCP, gated, ipchains, PVM, etc.
(~16MB)
We are using PPCBoot to bring up Linux, and it supports DHCP. This means that DHCP client support (pump) can also be removed.
rpm --erase hhl-ppc_82xx-dhcp-2.0-0
rpm --erase hhl-ppc_82xx-gated-1-1
rpm --erase hhl-ppc_82xx-ipchains-1.3.9-1
rpm --erase hhl-ppc_82xx-pvm-3.4.3-0
rpm --erase hhl-ppc_82xx-pump-0.7.2-1
dell 442} du -h -s /opt/hardhat/devkit/ppc/82xx/target
63M /opt/hardhat/devkit/ppc/82xx/target
10. The following Linux kernel source packages can be removed since we are using newer bits. See item 7.
rpm --erase hhl-kernel-2.2.14-1.2.2-1
rpm --erase hhl-kernel-2.4.0-test2-1.2.2-1
dell 464} du -h -s /opt/hardhat/devkit/ppc/82xx/target
63M /opt/hardhat/devkit/ppc/82xx/target
11. Since we don't have a disk drive, bonnie, a disk r/w perfomance tool can be removed.
rpm --erase hhl-ppc_82xx-bonnie-1-0
12. An embedded board doesn't have a mouse.
rpm --erase hhl-ppc_82xx-gpm-1.17.9-1
dell 494} du -h -s /opt/hardhat/devkit/ppc/82xx/target
63M /opt/hardhat/devkit/ppc/82xx/target
13. The following static libaries can be removed since they are only present in the target root file system. They don't get referenced from inside
of
/opt/hardhat/devkit/ppc/82xx/powerpc-hardhat-linux/lib/. (~3MB)
-r--r--r-- 1 root root 43688 Aug 8 2000 ./libcom_err.a -r--r--r-- 1 root root 313350 Aug 8 2000 ./libe2p.a -r--r--r-- 1 root root 1421020 Aug 8 2000 ./libext2fs.a -r--r--r-- 1 root root 250526 Aug 8 2000 ./libss.a -r--r--r-- 1 root root 154044 Aug 8 2000 ./libuuid.a
(cd /opt/hardhat/devkit/ppc/82xx/target/lib;\
find . -name '*\.a' | egrep 'libcom_err|libe2p|libext2fs|libss|libuuid' |\
xargs rm)
dell 534} du -h -s /opt/hardhat/devkit/ppc/82xx/target
60M /opt/hardhat/devkit/ppc/82xx/target
14. Perl is nice to have, but on an embedded board I can live without it. (~16MB)
rpm --erase hhl-ppc_82xx-perl-5.00503-6
dell 559} du -h -s /opt/hardhat/devkit/ppc/82xx/target
46M /opt/hardhat/devkit/ppc/82xx/target
15. Stripping all the files in the target root file system (~19MB)
cd /opt/hardhat/devkit/ppc/82xx/target
find . -type f -exec /opt/hardhat/devkit/ppc/82xx/bin/ppc_82xx-strip {} \;
dell 584} du -h -s /opt/hardhat/devkit/ppc/82xx/target
27M /opt/hardhat/devkit/ppc/82xx/target
16. The following packages (49) are left:
hhl-ppc_82xx-ash-0.2-2
hhl-ppc_82xx-bash-2.03-6
hhl-ppc_82xx-binutils-2.10.0.12-1
hhl-ppc_82xx-c++-2.95.2-13
hhl-ppc_82xx-cpio-2.4.2-1
hhl-ppc_82xx-diffutils-2.7-1
hhl-ppc_82xx-e2fsprogs-1.18-1
hhl-ppc_82xx-filesystem-2.0-12
hhl-ppc_82xx-fileutils-4.0-2
hhl-ppc_82xx-findutils-4.1-1
hhl-ppc_82xx-ftp-0.15-4
hhl-ppc_82xx-ftpd-0.11-3
hhl-ppc_82xx-gawk-3.0.4-1
hhl-ppc_82xx-gcc-2.95.2-13
hhl-ppc_82xx-gdb-5.0-1
hhl-ppc_82xx-gdb-client-5.0-1
hhl-ppc_82xx-gdb-server-5.0-1
hhl-ppc_82xx-getty_ps-2.0.7j-0
hhl-ppc_82xx-glibc-2.1.3-1e
hhl-ppc_82xx-grep-2.4-1
hhl-ppc_82xx-gzip-1.2.4-2
hhl-ppc_82xx-inetd-0.10-6
hhl-ppc_82xx-ldconfig-1.9.5-2
hhl-ppc_82xx-libstdc++-2.10.0-13
hhl-ppc_82xx-libtermcap-2.0.8-3
hhl-ppc_82xx-modutils-2.1.121-2
hhl-ppc_82xx-netperf-2.1pl3-1
hhl-ppc_82xx-net-tools-1.53-3
hhl-ppc_82xx-ping-0.10-6
hhl-ppc_82xx-popt-1.4-1
hhl-ppc_82xx-procps-2.0.4-2
hhl-ppc_82xx-psmisc-18-2
hhl-ppc_82xx-sash-3.4-5
hhl-ppc_82xx-sed-3.02-1
hhl-ppc_82xx-sh-utils-2.0-4
hhl-ppc_82xx-strace-4.2-1
hhl-ppc_82xx-sysvinit-2.77-6
hhl-ppc_82xx-tar-1.13.11-2
hhl-ppc_82xx-tcpdump-3.4-1
hhl-ppc_82xx-telnet-4.4.2-3
hhl-ppc_82xx-telnetd-0.10-4
hhl-ppc_82xx-termcap-9.12.6-2
hhl-ppc_82xx-textutils-2.0-2
hhl-ppc_82xx-tftp-0.15-2
hhl-ppc_82xx-util-linux-2.10m-1
hhl-ppc_82xx-vi-5.6-1
hhl-ppc_82xx-zlib-1.1.3-2
hhl-remove-1-0
hhl-rpmconfig-0.14-1
17. It we don't care about locales, different characters set, etc. We can save another ~12MB. This means we could get the root file system down to ~15MB. However, I am happy to stop at 27 MB since I hit my goal of being under 32 MB.
1.8M /opt/hardhat/devkit/ppc/82xx/target/lib/gconv 4.0M /opt/hardhat/devkit/ppc/82xx/target/share/locale 7.0M /opt/hardhat/devkit/ppc/82xx/target/share/i18n
18. I kept going with this exercise, and got the root file system down under 8 MB. The remaining packages at this point are:
hhl-ppc_82xx-bash-2.03-6
hhl-ppc_82xx-binutils-2.10.0.12-1
hhl-ppc_82xx-c++-2.95.2-13
hhl-ppc_82xx-filesystem-2.0-12
hhl-ppc_82xx-fileutils-4.0-2
hhl-ppc_82xx-gcc-2.95.2-13
hhl-ppc_82xx-gdb-client-5.0-1
hhl-ppc_82xx-getty_ps-2.0.7j-0
hhl-ppc_82xx-glibc-2.1.3-1e
hhl-ppc_82xx-inetd-0.10-6
hhl-ppc_82xx-ldconfig-1.9.5-2
hhl-ppc_82xx-libstdc++-2.10.0-13
hhl-ppc_82xx-libtermcap-2.0.8-3
hhl-ppc_82xx-modutils-2.1.121-2
hhl-ppc_82xx-net-tools-1.53-3
hhl-ppc_82xx-popt-1.4-1
hhl-ppc_82xx-procps-2.0.4-2
hhl-ppc_82xx-psmisc-18-2
hhl-ppc_82xx-sh-utils-2.0-4
hhl-ppc_82xx-sysvinit-2.77-6
hhl-ppc_82xx-telnet-4.4.2-3
hhl-ppc_82xx-telnetd-0.10-4
hhl-ppc_82xx-termcap-9.12.6-2
hhl-ppc_82xx-util-linux-2.10m-1
hhl-ppc_82xx-zlib-1.1.3-2
dell 126} du -s -k /opt/hardhat/devkit/ppc/82xx/target
7853 /opt/hardhat/devkit/ppc/82xx/target
------------------\\----------------------\\----------------------------
Jon Diekema | | Smiths Industries (616) 241-8310 | | 3290 Patterson Avenue, SE [email protected] \\ \\ Grand Rapids, MI 49512-1991
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Jon,
Quoted 3 lines · in message <m15cnZX-001SysC@bucks> you wrote:
Objective:
Create a Linux root file system that is under 32MB for a MPC8260 target.
Ummm... 32 MB? That's HUGE!!! Most of the systems I see in products have root filesystems in the size of 2...8 MB.
Quoted 1 line
Direction:
...
Quoted 2 lines
board. We will start with all the packages in HHL 1.2, and removed the fluff until we hit our target size.
I disagree with this method in general. Taking any "standard distribution" and removing things will always be a poor way to design
an embedded system. You will always get caught in strange
interdependencies, where you cannot remove A (which you don't need), because it's needed for some function of B (which you also don't need), but another function of B is used by C, which is important to you.
If you want to build a lean system you have to do it the other way
round: bottom up.
See also: .sig below :-)
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: [email protected] Perfection is reached, not when there is no longer anything to add, but when there is no longer anything to take away.
- Antoine de Saint-Exupery
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Wolfgang:
Quoted 5 lines
Quoted 2 lines
Objective:
Create a Linux root file system that is under 32MB for a MPC8260 target.Ummm... 32 MB? That's HUGE!!! Most of the systems I see in products have root filesystems in the size of 2...8 MB.
There is one point that I didn't make clear. We are booting the board over the wire, and we can afford the cost of 64MB DIMM instead of a 16 MB DIMM. We have a modest amount of flash on the board 2-4MB -- This is more than enough to hold PPCBoot.
If the board needed to be self contained, then the size of the root file system would be much smaller. The cost of flash is greater than a DIMM, so it justifies the additional work in creating a 2-8 MB root file system.
Quoted 2 lines
If you want to build a lean system you have to do it the other way
round: bottom up.
I would of taken this approach, if my goal was root filesystem that was less 8 MB.
Open Question:
How have other people have dealt with the creation of a root file system?
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