#u-boot on 2021-11-23 — irc logs at libera.irclog.whitequark.org

2021-10-04 15:18 Tartarus changed the topic of #u-boot to: SOURCE MOVED TO https://source.denx.de/u-boot/u-boot.git / U-Boot v2021.10 is OUT / Merge Window is OPEN until 25 October 2021 / Release v2022.01 is scheduled for 10 January 2022 / http://www.denx.de/wiki/U-Boot / Channel archives at https://libera.irclog.whitequark.org/u-boot

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08:35 <simeonm> Hi All. I'm seeing some funky behaviour trying to boot iPXE from an EFI binary written to SPI flash. Symptom is that after the bootefi command, iPXE doesn't execute (it just hangs) when loading from SPI, but if I load the binary from an SD card, it runs.

08:36 <simeonm> I have done some experiments where I load from SPI, then run crc32 over the memory, then I load from SD card and crc32 again - they match, so it seems loading is working fine from SPI

08:37 <simeonm> Funkiness is: if I load from SD card, then load from SPI over the same address, then bootefi works

08:37 <simeonm> As if loading the EFI binary from SD has some other side effect necessary for bootefi

08:38 <simeonm> This is how I load from SPI: sf probe; sf read $kernel_addr_r 0x200000 0x31a00;

08:38 <simeonm> This is how I load from SD: load mmc 1:7 $kernel_addr_r snp.efi

08:39 <simeonm> Booting just with: bootefi $kernel_addr_r

08:39 <simeonm> Any ideas for what I could try next?

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14:11 <agraf> simeonm: This sounds like the iPXE is unhappy about a memory based load path

14:15 <agraf> simeonm: when you load from SD, that sets the efi load path to the location you loaded from: https://github.com/u-boot/u-boot/blob/master/fs/fs.c#L756

14:18 <agraf> simeonm: I think the SPI flash load path doesn't invoke efi_set_bootdev(), so you end up in the fallback path: https://github.com/u-boot/u-boot/blob/master/cmd/bootefi.c#L451

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14:38 <wyre> hi guys, Is there some command to erase an env variable?

14:39 <wyre> I've created one called gatway because I didn't noticed it was actually 'gatewayip' and I'd like to remove that `gateway` env var

14:39 <agraf> wyre: "setenv <varname>"?

14:39 <wyre> agraf, just setting it empty does work?

14:39 <agraf> wyre: IIRC yes

14:40 <agraf> wyre: https://github.com/u-boot/u-boot/blob/master/cmd/nvedit.c#L265

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16:14 <sjg1> Hi, the U-Boot contributor call is in 15 minutes. There is no agenda though. If you have anything, please add it https://bit.ly/3bFvwA1

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17:56 <sjg1> Tartarus: I filed a bug for that CI thing you saw: https://source.denx.de/u-boot/u-boot/-/issues/3

18:16 <milkylainen> Hi Simon. Did you get a chance to try a 64-bit app build?

18:16 <Tartarus> sjg1: ok thanks, subscribed

18:18 <sjg1> milkylainen: Eek no I got completely distracted at the weekend. Will try later on today

18:19 <milkylainen> sjg1: Np. I'm not in a hurry. :)

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19:45 <cambrian_invader> sjg1: is there an equivalent of mmc_of_parse for platdata? or should I just set the mmc caps manually

19:49 <cambrian_invader> more generally, what's the correct way to work with presence/absence properties in platdata?

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21:14 <simeonm> agraf: ah thanks! - I'm going to see if adding iPXE to the FIT image and booting it with bootm works around the bootdev issue

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