Re: RPI4-4Gb Boot fails from SD card (both my build AND the official 14.3 build)

On 7/27/2025 17:35, Mark Millard wrote:
> On Jul 27, 2025, at 13:03, Karl Denninger<karl@denninger.net> wrote:
>
>> BTW another thing I didn't notice right away, but do on further playing with the "pi3" u-boot -- that specific Pi4 comes up but only sees 1Gb of RAM.
>> The one I have has 4 and under Linux it does see and use all of it.
> That does not surprise me at all. Upstream made separate U-Boot
> versions, with the RPi3 being long before RPi4B's existed.
> The (temporarily?) more generic one came after both the RPi3B
> and RPi4B U-Boot's had existed for some time. (I do not know
> how much to blame U-Boot vs. FreeBSD vs. a mix of both for
> the current status.)
>
> I would not expect a RPi3B U-Boot to well handle everything about
> a RPi4B, both as an upstream issue and as a FreeBSD ports issue.
>
> ===
> Mark Millard
> marklmi at yahoo.com
>
I received my "current model" 2Gb Pi4 today and it boots as expected 
with the current "u-boot-rpi-arm64" u-boot -- and sees all the RAM.

So whatever the issue is relates to the older Pi4 hardware (the one I 
have is a 4Gb model), apparently some difference between the mmc/sdio 
controller that the newer u-boot does not set up correctly,  which boots 
with the rpi3 u-boot but only sees 1 Gb of RAM.  That's a fairly serious 
PITA but apparently "it is what it is."

-- 
Karl Denninger
karl@denninger.net
/The Market Ticker/
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