Juanito
Group: Members
Posts: 1601
Joined: Sep. 2005 |
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Posted: Dec. 08 2006,14:33 |
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Finally, I got there - thanks to all who helped - unfortunately, it seems that in 2.4.26 I will have to be content with the p4-clockmod module for cpufreq rather than the speedstep-centrino module. Anyway, here's how to do this for anybody that might be interested.
Materials required:
Download gcc-2.95.dsl, gcc1-with-libs.dsl & gnu-utils.dsl from the DSL repository
Download linux-2.4.26.tar.gz from "www.kernel.org" or mirror sites
Obtain knoppix 3.4 kernel patch and .config
Download cpufreq-LINUX_2_4-20040813.tar.gz from http://ftp.linux.org.uk/pub/linux/cpufreq/
Make a copy of the instructions for fixing the broken 2.4.26 drmP.h file at http://lkml.org/lkml/2004/4/19/202
load required dsl packages:
# mydsl-load /path-to-file/gcc-2.95.dsl
# mydsl-load /path-to-file/gcc1-with-libs.dsl
# mydsl-load /path-to-file/gnu-utils.dsl
Create a directory for the kernel sources owned by user dsl:
# mkdir /ramdisk/kernelsource
# chown dsl /ramdisk/kernelsource
Copy the kernel sources to the new directory and un-pack them:
# cp /path-to-file/linux-2.4.26.tar.gz /ramdisk/kernelsource
# cd /ramdisk/kernelsource
# tar -xzvf linux-2.4.26.tar.gz -C /ramdisk/kernelsource
# rm linux-2.4.26.tar.gz
Apply the knoppix patch to the kernel sources:
# cd /ramdisk/kernelsource
# patch -p1 -d linux-2.4.26 < knoppix-kernel.patch
Copy the cpufreq patch to the new directory, unpack it and patch:
# cp /path-to-file/cpufreq-LINUX_2_4-20040813.tar.gz /ramdisk/kernelsource
# tar -xzvf cpufreq-LINUX_2_4-20040813.tar.gz -C /ramdisk/kernelsource
# rm cpufreq-LINUX_2_4-20040813.tar.gz
# cd /ramdisk/kernelsource/cpufreq
# ./patchin.sh /usr/src/linux-2.4.26
Modify the drmP.h file as per instructions and overwrite broken file in kernel sources:
# cp -f /path-to-file/drmP.h /ramdisk/kernelsource/linux-2.4.26/drivers/char/drm
Prepare sources for re-compilation:
# cd /ramdisk/kernelsource/linux-2.4.26
# make mrproper
Overwrite the default configuration with the knoppix kernel configuration and select the required cpufreq options for your cpu:
# cp -f /path-to-file/.config /ramdisk/kernelsource/linux-2.4.26/arch/i386/defconfig
# make oldconfig
#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=y
CONFIG_CPU_FREQ_PROC_INTF=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_24_API=y
# CONFIG_X86_POWERNOW_K6 is not set
# CONFIG_X86_POWERNOW_K7 is not set
# CONFIG_X86_POWERNOW_K8 is not set
# CONFIG_X86_LONGHAUL is not set
# CONFIG_X86_SPEEDSTEP_PIIX4 is not set
# CONFIG_X86_SPEEDSTEP_SMI is not set
# CONFIG_X86_SPEEDSTEP_ICH is not set
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
CONFIG_X86_P4_CLOCKMOD=m
# CONFIG_X86_LONGRUN is not set
# CONFIG_X86_GX_SUSPMOD is not set
Build dependencies and cleanup:
# make dep
# make clean
Build kernel boot image, copy to the root directory of your USB stick & make rw:
# make bzImage
# make install
# cp /boot/vmlinuz-2.4.26 /path-to-boot-usb-root-dir/vmlinuz
# rdev -R /path-to-boot-usb-root-dir/vmlinuz 0
Build new cpufreq module and save it:
# make modules
# make modules_install
# cp /lib/modules/2.4.26/kernel/arch/i386/kernel/p4-clockmod.o /path-to-safe-place
Reboot chosing vmlinuz at boot prompt, install new module and get setup:
# cp /path-to-safe-place/p4-clockmod.o /lib/modules/2.4.26/kernel/arch/i386/kernel
# insmod p4-clockmod
# apt-get install acpid [Debian stable]
# apt-get install cpufreqd
Modify /etc/cpufreqd.conf to your taste then check things work:
# cat /proc/cpufreq
minimum CPU frequency - maximum CPU frequency - policy
CPU 0 199354 kHz ( 12 %) - 1594837 kHz (100 %) - performance
# cpufreqd -V5 -D
parse_config(): Rule "conservative" has Profile "lo_boost"
parse_config(): Rule "lo_cpu_boost" has Profile "medium_boost"
parse_config(): Rule "hi_cpu_boost" has Profile "medium_boost"
parse_config(): Rule "AC_on" has Profile "hi_boost"
Starting operations.
libsys_init(): ACPICA version 20040326
set_policy(): 66%100%performance - profile name: hi_boost.
main_loop(): profile set "hi_boost" for rule "AC_on".
[remove power cord]
set_policy(): 0%33%performance - profile name: lo_boost.
main_loop(): profile set "lo_boost" for rule "conservative".
<ctrl-c>
Caught INT signal (Interrupt).
# cat /proc/cpufreq
minimum CPU frequency - maximum CPU frequency - policy
CPU 0 199354 kHz ( 12 %) - 526296 kHz ( 32 %) - performance
And that's it. I can't help thinking (in hindsight) that it would have been better to have written a simple acpi script to set the speedstep setting manually - i.e. "echo x > /proc/acpi/processor/CPU0/performance" but that would have been too easy.
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