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<hays>
if i have instructions on how to load a bootloader with u-boot is there a way to make a backu[
<hays>
backup
<tpw_rules>
backup of what?
<hays>
the existing bootloader
<tpw_rules>
i'm not sure what you mean by "load" and "bootloader" then. u-boot can generally only load things into ram. if you want to load a new bootloader with it, then it will be gone when the system powers back off
<tpw_rules>
if you mean loading a new version of u-boot itself, that process (and backing up) depends 100% on the specific device
<hays>
hmm... so what does this do? "bubt flash-image.bin spi usb"
<hays>
is this device-specific?
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<tpw_rules>
ah ok, using bubt
<tpw_rules>
yes, most devices don't use that
<hays>
it doesn't appear bubt does backups
<tpw_rules>
but that is a u-boot command. it looks like you'll have to read the spi flash out into RAM with "sf read", then use "save" to write the RAM to a file
<tpw_rules>
of course, if something goes wrong, how will you get back into u-boot to rewrite the flash?
<tpw_rules>
do you have a hardware programmer?
<hays>
well yeah itf something goes really wrong im probably hosed
<hays>
im dealing with what is technically open source but these guys have shipped a device that is way ahead of what they've documented in their build instructions
<hays>
so im hoping there was a simple way to extract the u-boot before i flashed over it
<tpw_rules>
like i said, read the flash to RAM with the "sf" command, then use "save" to write it to attached storage
<tpw_rules>
you should also just be able to do "help save" at the promp
<tpw_rules>
t
<hays>
ill keep that in mind. was trying to find it in the docs or source
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<xypron>
Tartarus: ./tools/../lib/rsa/rsa-sign.c:631:13: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers] with current origin/master
<xypron>
Tartarus: I guess that should be fixed in the release?
<mps>
anyone can tell how to increase character size on screen in u-boot? I tried with true type option under device driver but fonts are ugly and screen size is not correct
<mps>
8x16 fonts are too small on high resolution screens
<xypron>
mps: if you use truetype you should select a font that is monospaced.