[U-Boot] Uboot compatible with board Tegra124-nyan-big (ChromeBook G3 HP 14")

[Thomas Hoff]

Hey Alexandre,


Here is a link to a precompiled and signed non verified uboot for the
nyan-big chromebook:
https://drive.google.com/file/d/0B3uMpbwOyYIadEtPdVpHV1piWEU/view?usp=sharing

This is how you would boot a kernel from an sdcard that had uImage and
tegra124-nyan-big.dtb in ext2 formatted partition on /dev/mmcblk1p3
mmc dev 1 ; mmc rescan 1 ; ext2load mmc 1:3 0x81000000 uImage ; ext2load
mmc 1:3 0x82000000 tegra124-nyan-big.dtb ; bootm 0x81000000 - 0x82000000

Hope that helps

On Fri, Jul 21, 2017 at 3:48 AM, Simon Glass <sjg at chromium.org> wrote:

> Hi Alexandre,
>
> [...]
>
> >>     Hi , My Name is Alexander and i need some tip information about
> U-boot
> >> Board Nyan-Big to runinng Linux v4.4.x.x.
> >
> > Can you please resend this to the U-Boot mailing list and cc me?
> >
> > Thanks,
> > Simon
> >>
> >>
> >> I compiled source 4.4.0.70 Ubuntu distribution in chroot environment in
> my
> >> chormebook Tegra Tk1.
> >> After compilation the generated files were the following:
> >>
> >>
> >>
> >> [aperfeito at alarm boot]$ ls -l
> >> total 24992
> >> -rw-r--r-- 1 root root    98874 Jul 13 14:54 config-4.4.70-ARCH
> >> -rw-r--r-- 1 root root  8277506 Jul 13 14:54 initrd.img-4.4.70-ARCH
> >> -rw-r--r-- 1 root root  2033244 Jul 13 14:54 System.map-4.4.70-ARCH
> >> -rw-r--r-- 1 root root 15175680 Jul 13 14:54 vmlinuz-4.4.70-ARCH
> >>
> >> I also compiled the u-boot-tegra in the same environment in chroot
> Ubuntu
> >> Xenial distribution these were compiled according to the email of Tom
> Warren
> >> send before
> >>
> >>   Make 'nyan-big_defconfig' and everything ok as you see below the
> >> generated files:
> >>
> >>
> >> [aperfeito at alarm u-boot-tegra]$ ls *.bin
> >> u-boot.bin      u-boot-dtb-tegra.bin  u-boot-nodtb-tegra.bin
> >> u-boot-dtb.bin  u-boot-nodtb.bin      u-boot-tegra.bin
> >>
> >> Now is the tip I'm asking you:
> >> I have two suggestions on how to put this in the KERNEL partition of my
> >> USB.
> >>   My USB has two partitions
> >>    To 1st. KERNEL Name with 16 megabytes of space dev / sda6
> >>    A 2st.  ROOFS   Name approximately 29 Gigabytes of space where I
> worked
> >> to compile the UbuntuXenial and Uboot-Tegra srcs kernel as you see in
> the
> >> email.
> >>
> >>
> >> Sugestion : 1
> >> mkimage -D "-I dts -O dtb -p 2048" -f kernel.its vmlinux.uimg
> >>   dd if=/dev/zero of=bootloader.bin bs=512 count=1
> >>   vbutil_kernel \
> >>     --pack vmlinux.kpart \
> >>     --version 1 \
> >>     --vmlinuz vmlinux.uimg \
> >>     --arch arm \
> >>     --keyblock kernel.keyblock \   --> How I do This  if necessary
> >>     --signprivate kernel_data_key.vbprivk \  --> How I do This if
> >> necessary
> >>     --config cmdline \ --> TXT file whit this config below
> >>     --bootloader bootloader.bin
> >>
> >> kernel.its adjust to files below as given to te src kernel 4.4.0-70
> >> ./arch/arm/boot/dts/tegra124-nyan-blaze.dtb
> >> ./arch/arm/boot/dts/tegra124-nyan-big.dtb
> >> ___________________________________________________TXT CONFIG FILE
> >> __________________________________________________
> >> console=tty1 init=/sbin/init root=PARTUUID=%U/PARTNROFF=1 rootwait rw
> >> noinitrd lsm.module_locking=0  ## OR ###
> >> initrd=/boot/initrd.img-4.4.0-ARCH console=ttyS0,115200n8 console=tty1
> >> ignore_loglevel earlyprintk cgroup_enable=memory root=/dev/sda7
> >>
> >>
> >>       ###  For config line need your sugestion with is the best.
> >>
> >>
> >> Sugestion: 2
> >>
> >>   I have to copy the kernel, generated initramfs, and dtb to the SDA6
> >> partition and added the following kernel config to
> /dev/sda7/roofsparttion
> >> :/boot/extlinux/extlinux.conf
> >>
> >> LABEL UbuntuXenial
> >>  MENU LABEL UbuntuXenial on sda7 with 4.4 kernel
> >>  LINUX /boot/vmlinuz-4.4.0
> >>  FDT /boot/dtb/tegra124-nyan-big.dtb
> >>  APPEND initrd=/boot/initrd.img-4.4.0-ARCH console=ttyS0,115200n8
> >> console=tty1 ignore_loglevel earlyprintk cgroup_enable=memory
> root=/dev/sda7
> >>
> >>
> >>
> >> How to make U-boot-Tegra now Work with Kernel 4.4.x.x as v3.10.x.x
> Kernels
> >> booting on USB.
>
> There is a series which shows how to do this for tegra and rockchip.
> It is at u-boot-dm/chain-working and you can find a README there as
> well.
>
> The series has not been applied yet - I think it is in Tom Warren's queue?
>
> Regards,
> Simon
> [...]
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