Firmware: Difference between revisions
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The fact that the Firmware can 'fix' bugs later has at some vendors the effect that early firmware revisions are rarely useable -- fixed-function hardware is usually more carefully designed. |
The fact that the Firmware can 'fix' bugs later has at some vendors the effect that early firmware revisions are rarely useable -- fixed-function hardware is usually more carefully designed. |
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==Firmware auto-loading== |
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Most people would like their system to load their DVB firmware at boot time/when the module is loaded.<BR> |
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This can be done easily using [http://linux-hotplug.sourceforge.net hotplug] |
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First, do the following where xxxxx is one of sp8870/sp887x/tda10045/tda10046/av7110/dec2000t/dec2540t/dec3000s/vp7041/dibusb :<BR> |
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<code>perl /usr/src/linux/Documentation/dvb/get_dvb_firmware xxxxx</code><BR> (script distributed along with kernel source) |
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It would download the wanted firmware to current directory.<BR> |
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Then, copy the firmware file to <code>/lib/firmware</code> or <code>/usr/lib/hotplug/firmware/</code> (depends of your hotplug version) |
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When the appropriate module is loaded, it would automatically load the firmware. |
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Revision as of 12:40, 3 January 2005
Modern chipsets move more and more functionality from fixed-function implementations in silicon to firmware or software. The chip becomes a more generic microcontroller or DSP that executes the Firmware and does the same jobs.
Drawbacks are that this solution may consume more power than an optimized fixed-function design and that different firmware revisions can cause completely different behaviour of the chips.
The fact that the Firmware can 'fix' bugs later has at some vendors the effect that early firmware revisions are rarely useable -- fixed-function hardware is usually more carefully designed.
Firmware auto-loading
Most people would like their system to load their DVB firmware at boot time/when the module is loaded.
This can be done easily using hotplug
First, do the following where xxxxx is one of sp8870/sp887x/tda10045/tda10046/av7110/dec2000t/dec2540t/dec3000s/vp7041/dibusb :
perl /usr/src/linux/Documentation/dvb/get_dvb_firmware xxxxx
(script distributed along with kernel source)
It would download the wanted firmware to current directory.
Then, copy the firmware file to /lib/firmware or /usr/lib/hotplug/firmware/ (depends of your hotplug version)
When the appropriate module is loaded, it would automatically load the firmware.
it would be nice to have some words explaining the linux firmware loader stuff. contributors?