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<Tartarus>
xypron: Am I remembering things right and if bootefi isn't called with a device tree address, we end up using the device tree U-Boot itself is using, as the first fall back option?
<marex>
silurian_invader: I had a few real MMC and even RSMMC cards
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<grawity>
does u-boot on x86 support being started by BIOS, like a regular bootloader?
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<marex>
grawity: not to my knowledge, but bios is irrelevant
<marex>
grawity: what's your usecase?
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<grawity>
marex: soekris net4511
<ukky>
grawity: What is the point of starting U-Boot after System BIOS? Both U-Boot and System BIOS perform the same actions in the boot process.
<Xogium>
ukky: I mean, unless I'm mistaken, bios != bootloader, so no, it doesn't do the same thing
<Xogium>
it would be like saying you don't need grub because you have a bios
<ukky>
Xogium: System BIOS != Bootloader. Grub cannot initialize the system.
<Xogium>
that's exactly what I just said
<Xogium>
u-boot is a bootloader. It's not a bios
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<bswartz>
In the old days the BIOS was part of the operating system
<ukky>
u-boot is not just a bootloader. It can be used as full System BIOS replacement, including DDR initialization, FPGA programming, etc.
<bswartz>
DOS could not run without a BIOS underneath it
<Xogium>
on arm and possibly other arch, you actually have no bios. You have a basic boot rom that loads u-boot in spl form, then spl loads full u-boot. That's not how x86 works
<Xogium>
or at any rate, not these days
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<ukky>
There is no need to replace System BIOS on x86 with U-Boot, as OEMs already provide you System BIOS. Unless it is an embedded X86 platform, then U-Boot can be used to completely replace System BIOS.
<bswartz>
My understanding is that on x86, the CPU loads the UEFI from a flash chip exactly like arm loads u-boot from a flash chip
<bswartz>
It's just way more standardized on x86
<Xogium>
assuming you've got actual uefi, perhaps
<Xogium>
but to me bios == legacy
<ukky>
depends on system complexity, but, in general, yes, everything starts from flash/emmc/etc
<ukky>
Xogium: to me BIOS means bring the system up until grub/kernel can be started.
<ukky>
legacy BIOS has to provide interrupt services to the OS, but nowdays no OS use them, maybe just to query info from System BIOS and until OS switches to protected mode.
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<tlwoerner>
my rockchip-based tinker board stopped working
<tlwoerner>
bisecting landed on fadad3a64a12 ("binman: Convert mkimage to Entry_section")
<tlwoerner>
marex: ^^
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<marex>
tlwoerner: ask sjg1 about binman changes
<sjg1>
tlwoerner: Can you diagnose it a bit?
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