What are the cd, db, and x versions of fixup.dat and start.elf?

[kvu787]

No description provided.

[popcornmix]

I think you'll have to be more specific.
You can find the files here: https://github.com/raspberrypi/firmware/tree/master/boot
And they should be present on the first partition of sdcard (although that may be distribution dependent).

[popcornmix]

start_x is the full firmware that includes camera and software codecs
It is enabled when start_x=1 is in config.txt

start_cd is the cutdown firmware that has no support for firmware hardware blocks like codecs and 3d
It is enabled when gpu_mem=16 is in config.txt

[JamesH65]

We should probably put this is the documentation somewhere, if it isn't there already. I'll have a dig around.

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On 26 March 2018 at 15:20, popcornmix ***@***.***> wrote: start_x is the full firmware that includes camera and software codecs It is enabled when start_x=1 is in config.txt start_cd is the cutdown firmware that has no support for firmware hardware blocks like codecs and 3d It is enabled when gpu_mem=16 is in config.txt — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#959 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ADqrHQvAgaQc0P6LxlzitU4ChA5-SEpaks5tiPk4gaJpZM4S5_V-> .

-- James Hughes Principal Software Engineer, Raspberry Pi (Trading) Ltd

[popcornmix]

There is a mention of start_x and start_db here: https://www.raspberrypi.org/documentation/configuration/config-txt/boot.md
but not much explanation. start_cd is not mentioned.

[JamesH65]

Thanks @popcornmix, I'll update the docs.

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On 26 March 2018 at 20:25, popcornmix ***@***.***> wrote: There is a mention of start_x and start_db here: https://www.raspberrypi.org/documentation/configuration/config-txt/boot.md but not much explanation. start_cd is not mentioned. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#959 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ADqrHVT2QXpMO5nyt4QcZFXsW0TPvNrqks5tiUCdgaJpZM4S5_V-> .

-- James Hughes Principal Software Engineer, Raspberry Pi (Trading) Ltd

[JamesH65]

Created an issue raspberrypi/documentation#869, will get to it when I have the time.

[carlonluca]

May I also ask some info about the difference between recovery.elf and start.elf? Any difference related to the sdcard i/o maybe? Thanks.

[ghollingworth]

The only difference between recovery.elf and start.elf is the name. It is used by the firmware to identify itself as a NOOBS recovery partition

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On 14 April 2018 at 23:22, Luca Carlon ***@***.***> wrote: May I also ask some info about the difference between recovery.elf and start.elf? Any difference related to the sdcard i/o maybe? Thanks. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#959 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AB9CHIm8_Gq5ID3z_3gvNLBuMCx-CIMUks5tonaZgaJpZM4S5_V-> .

[carlonluca]

When booting noobs I see that only around 230MB of ram are detected (on Pi3). Also I see other differences. Can I conclude this is not related to recovery.elf? I read in the wiki that recovery.elf "switches the firmware into "NOOBS mode"": does it only mean that it loads files with a different name by default (recovery.cmdline, recovery.img) and that it sets recovery.rfs as the root file system? Thanks.

[ghollingworth]

Yes that is correct

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On 15 April 2018 at 11:02, Luca Carlon ***@***.***> wrote: When booting noobs I see that only around 230MB of ram are detected (on Pi3). Also I see other differences. Can I conclude this is not related to recovery.elf? I read in the wiki that recovery.elf "switches the firmware into "NOOBS mode"": does it only mean that it loads files with a different name by default (recovery.cmdline, recovery.img) and that it sets recovery.rfs as the root file system? Thanks. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#959 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AB9CHCZ8U9xDDhUCBzQZTfvo1r0bUh0Gks5toxrIgaJpZM4S5_V-> .

[lurch]

When booting noobs I see that only around 230MB of ram are detected (on Pi3). Also I see other differences. Can I conclude this is not related to recovery.elf?

recovery.elf is start.elf, just with a different name https://github.com/raspberrypi/noobs/blob/master/BUILDME.sh#L171

As noted in raspberrypi/noobs#487 (comment) you also need the corresponding fixup.dat file in place if you want to access more memory. (But since NOOBS has to remain compatible with the 256MB Model A+ Pis, then there's no benefit to NOOBS on the Pi3 having access to more memory)

[lurch]

I guess raspberrypi/documentation#883 means that this issue can be closed?

[JamesH65]

Yup!