[U-Boot] "fdt" commands in extlinux.conf ?
I'd like to enable the CANbus on a Beagle Bone Black (on Fedora ...
which doesn't do "cape manager").
The crux is a fdt command in u-boot :
fdt set d_can1 status okay
Is there a way to do this in extlinux.conf ?
I didn't see a way (in uboot 2017.09), so I wrote a uEnv.txt script
(see attached).
That's a bit verbose and duplicates a bunch of stuff already in uboot
(also : uEnv.txt doesn't exist on my "Orange Pi One").
It there a simpler way to state "fdt" commands ?
Thanks
##run findfdt; run init_console
##mmc dev ${mmcdev}; if mmc rescan; then echo SD/MMC found on device
${mmcdev};fi
###run distro_bootcmd
##run loadbootenv; run importbootenv
devtype=mmc
bootpart=0:1
## scan_dev_for_boot_part ??
## finduuid ??
uuid=b2c019d9-2401-4a22-9a40-36a92a00cdfe
#u0=-4.13.11-200.fc26.armv7hl
#u0=-4.13.12-300.fc27.armv7hl
u0=-4.13.13-300.fc27.armv7hl
loadfdt=load ${devtype} ${bootpart} ${fdtaddr} dtb${u0}/${fdtfile}
loadramdisk=load ${devtype} ${bootpart} ${rdaddr} uInitrd${u0}
loadimage=load ${devtype} ${bootpart} ${loadaddr} vmlinuz${u0}
##fdt addr ${fdtaddr}
### CBB-Serial :
#fdt set d_can1 status okay
#fdt set d_can0 status okay
#fdt set serial1 status disable
#fdt set serial2 status okay
#fdt set i2c2 status disable
#fdt set serial4 status okay
uenvcmd=run loadimage; run loadramdisk; run loadfdt; fdt addr ${fdtaddr} ; fdt
set d_can1 status okay ; fdt set d_can0 status okay ; fdt set serial1 status
disable ; fdt set serial2 status okay ; fdt set i2c2 status disable ; fdt set
serial4 status okay ; setenv bootargs ro root=UUID=${uuid}; bootz ${loadaddr}
${rdaddr} ${fdtaddr}
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Re: [U-Boot] "fdt" commands in extlinux.conf ?
On Sun, Jan 7, 2018 at 4:04 AM, Ken Harris wrote: > I'd like to enable the CANbus on a Beagle Bone Black (on Fedora ... > which doesn't do "cape manager"). Well Fedora doesn't so stuff that's not upstream, and while there's been a bunch of discussion there's been no decision upstream of how best to do overlay management. > The crux is a fdt command in u-boot : > > fdt set d_can1 status okay > > Is there a way to do this in extlinux.conf ? You could probably load an overlay and save the environment? Dealing with this better in Fedora is on my todo list to get to eventually. > I didn't see a way (in uboot 2017.09), so I wrote a uEnv.txt script > (see attached). > > That's a bit verbose and duplicates a bunch of stuff already in uboot > (also : uEnv.txt doesn't exist on my "Orange Pi One"). > > It there a simpler way to state "fdt" commands ? > > Thanks > > ___ > U-Boot mailing list > U-Boot@lists.denx.de > https://lists.denx.de/listinfo/u-boot > ___ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
Re: [U-Boot] "fdt" commands in extlinux.conf ?
On Sun, Jan 7, 2018 at 6:39 PM, Peter Robinson wrote: > On Sun, Jan 7, 2018 at 4:04 AM, Ken Harris wrote: >> The crux is a fdt command in u-boot : >> >> fdt set d_can1 status okay >> >> Is there a way to do this in extlinux.conf ? > You could probably load an overlay and save the environment? FYI, this is not an overlay (fdt apply), but just a "fdt set" command : the d_can1 section is already in am335x-boneblack.dtb (but with status = "disabled") >> I didn't see a way (in uboot 2017.09), so I wrote a uEnv.txt script >> (see attached). >> >> That's a bit verbose and duplicates a bunch of stuff already in uboot > Dealing with this better in Fedora is on my todo list to get to eventually. Thanks, but as the uEnv.txt script shows, this can be handled in u-boot and Fedora will react to those changes. >> It there a simpler way to state "fdt" commands ? It seems to me there should be some new fields in extlinux.conf to state u-boot "fdt" commands, such as "fdt set" and "fdt apply" >> Thanks >> >> ___ >> U-Boot mailing list >> U-Boot@lists.denx.de >> https://lists.denx.de/listinfo/u-boot >> ___ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
