xypron changed the topic of #u-boot to: #u-boot SOURCE MOVED TO https://source.denx.de/u-boot/u-boot.git / U-Boot 2023.01 / Merge Window is OPEN, -next is CLOSED / Release v2023.01 is scheduled for 2023-01-09 / Channel archives at https://libera.irclog.whitequark.org/u-boot
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<marex> mrnuke: thanks for the stm32mp15 romapi implementation, it just came in handy :)
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<marex> Tartarus: https://lists.fosdem.org/pipermail/fosdem/2022q4/003467.html seems that U-Boot is missing (again)
<Forty-Bot> marex: are you planning on submitting anything?
<marex> Forty-Bot: maybe
<Forty-Bot> I thought of doing something regarding the semihosting patches I've sent recently
<marex> Forty-Bot: yes, please ? :)
<Forty-Bot> but I think that'd be better for a shorter-form talk
<Forty-Bot> not sure if it merits 25 minutes
<marex> considering how useful it is ... yes ?
<marex> you can show how to use u-boot via JTAG without UART ;-)
<Forty-Bot> well, if you insist
<marex> Forty-Bot: I have no say in what you do obv, but hey, it would be amazing I think
<marex> Forty-Bot: btw there is also the embedded track
<Forty-Bot> ugh, I have to write a bio for this
<marex> Forty-Bot: maybe we can go grab a beer after the talks
<Forty-Bot> I'd love to
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<marex> Forty-Bot: yeah, the social part in general has been long neglected for many
<marex> so, likewise
<Forty-Bot> I've never been to a programming conference before, so I am hoping to meet some interesting people
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* marex embeds head into wall and does quadrupel picard ... oh ST 3-/
<marex> https://wiki.st.com/stm32mpu/wiki/STM32_MPU_ROM_code_overview#Boot_from_serial_NOR so here ... ST claims that SPI NOR boot supports two copies of FSBL and fallback
<marex> which it indeed does ... except ... if you only 'sf erase' the first copy, the machine hangs instead of falling back to the second copy
<marex> one has to rewrite that first copy with zeroes for the fallback to kick in (which is not the default on erased SPI NOR, that one is reinited to all 1s)
<Forty-Bot> I have yet to encounter a platform which properly supports a/b copies of the first stage bootloader
<marex> I speculate this has to do with https://wiki.st.com/stm32mpu/wiki/STM32_header_for_binary_files#On_STM32MP15x_lines header option flags ... flag=1 means "do not check CRC"
<marex> and do not check CRC means ... load the whole thing no matter how weird it looks and jump to it, and hang yourself ... and of course, that flag is set if the SPI NOR is just erased
<marex> sigh !
<marex> Forty-Bot: i.MX did ... well ... until i.MX8MN/MP where they improved things with BootROM v2 and dropped the so far working A/B functionality, thus rendering it worthless
<Forty-Bot> huh, interesting
<marex> Forty-Bot: at least ST didn't set the bar too high for themselves :-X
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