[U-Boot] [PATCH 0/20] tegra: Expand Nyan-big support

Matthew Gorski
2017-05-05T18:02:14Z

On Fri, May 5, 2017 at 1:54 PM, Thomas Hoff <thomashoffltd@gmail.com> wrote:

> Hey Matthew,
>
> Did you have any luck with this? I was attempting to do this a while back
> with no success.
>
> Cheers,
>
> Thomas
>

No unfortunately not. Simon was going to try himself at some point. I
have a few u-boot forks im dying to chain-boot on nyan so I hope there is
some progress. I think we need to see whats going on behind the scenes
with a servo board and serial output because I can get u-boot to boot (i
think) but it reboots immediately into recovery (no console on lcd display).

Let hope Simon gets some time in the near future ;)

>
> On Wed, May 3, 2017 at 5:02 AM, Matthew Gorski <matt.gorski@gmail.com>
> wrote:
>
>> Great Simon! That would be very appreciated! I look forward to your​
>> results. Thanks for all the guidance. If I have a servo board with
>> serial
>> I'm sure I could see what's going on behind the scenes ;)
>>
>> On May 2, 2017 10:40 PM, "Simon Glass" <sjg@chromium.org> wrote:
>>
>> Hi Matthew,
>>
>> On 2 May 2017 at 18:51, Matthew Gorski <matt.gorski@gmail.com> wrote:
>> > I have yet to produce a u-boot command prompt. I can get the display to
>> > flash using u-boot mainline with 0x81000100 as the SYS_TEXT_BASE and
>> using:
>> >
>> > description = "Chrome OS kernel image with one or more FDT blobs";
>> >
>> > but the boot process forces a reboot into recovery.
>> >
>> > If I use:
>> >
>> > description = "U-Boot + FDT --------- THIS PADDING IS NEEDED SO THE
>> IMAGE
>> > STARTS AT THE RIGHT OFFSET";
>> > Produces a blank screen with the exact u-boot.bin
>> >
>> > I hope someone can confirm nyan can chainboot u-boot and possibly post
>> what
>> > the used for their FIT its config. Thanks for all the help and guided
>> > responses.
>>
>> I hope to be able to try this later in the week.
>>
>> - Simon
>>
>> >
>> > On Tue, May 2, 2017 at 11:34 AM, Matthew Gorski <matt.gorski@gmail.com>
>> > wrote:
>> >>
>> >>
>> >>
>> >> On Tue, May 2, 2017 at 9:25 AM, Matthew Gorski <matt.gorski@gmail.com>
>> >> wrote:
>> >>>
>> >>>
>> >>>
>> >>> On Tue, May 2, 2017 at 2:54 AM, Sjoerd Simons
>> >>> <sjoerd.simons@collabora.co.uk> wrote:
>> >>>>
>> >>>> On Tue, 2017-05-02 at 08:42 +0200, Tomeu Vizoso wrote:
>> >>>> > On 2 May 2017 at 08:40, Tomeu Vizoso <tomeu@tomeuvizoso.net>
>> wrote:
>> >>>> > > On 2 May 2017 at 03:19, Matthew Gorski <matt.gorski@gmail.com>
>> >>>> > > wrote:
>> >>>> > > > Seems if you change the FIT description from anything but
>> >>>> > > >
>> >>>> > > > "description = "Chrome OS kernel image with one or more FDT
>> >>>> > > > blobs";"
>> >>>> > > >
>> >>>> > > > the kernel wont load. So this issue has to be in the kernel-
>> >>>> > > > big.its
>> >>>> > > > <https://git.collabora.com/cgit/user/tomeu/u-boot.git/tree/
>> kernel
>> >>>> > > > -big.its?h=nyan-big&id=35bcb399c0d78ba6a050cc775d467ee75ed06
>> 923>
>> >>>> > > >
>> >>>> > > > https://git.collabora.com/cgit/user/tomeu/u-boot.git/tree/
>> kernel-
>> >>>> > > > big.its?h=nyan-big&id=35bcb399c0d78ba6a050cc775d467ee75ed06923
>> >>>> > > >
>> >>>> > > > We may just need a proper working .its for nyan
>> >>>> > >
>> >>>> > > Hi Matthew,
>> >>>> > >
>> >>>> > > it has been quite a while, but I remember that if we only tried
>> >>>> > > chainloading U-Boot was because the goal was to integrate these
>> >>>> > > machines in our LAVA lab, which to date doesn't support
>> Depthcharge
>> >>>> > > (though I hope this will change once I get back some time).
>> >>>> > >
>> >>>> > > I cannot remember how the correct position of the kernel within
>> the
>> >>>> > > FIT image was calculated, but it definitely involved looking at
>> the
>> >>>> > > depthcharge sources.
>> >>>> >
>> >>>> > Actually, I have grepped my IRC logs and turns out that we need for
>> >>>> > the start of U-Boot's code to be aligned to 64kB.
>> >>>>
>> >>>> Yup, U-boot both needs to be properly aligned and know its text base
>> >>>> address.
>> >>>>
>> >>>> So the calculation we did was basically look at depthcharge where in
>> >>>> memory the FIT image gets loaded, determine a suitable load address
>> >>>> after that (e.g fit load + 64k), configure that in u-boot and then
>> add
>> >>>> enough padding in the fit image itself such that the u-boot code
>> starts
>> >>>> at the determined address in memory by putting in just the right
>> amount
>> >>>> of padding ;).
>> >>>>
>> >>>> It is rather ugly, but it does allow running u-boot without the need
>> to
>> >>>> change the firmware in flash.
>> >>>
>> >>>
>> >>> Thank You Tomeu, Sjoerd and Simon for taking the time to chime in on
>> an
>> >>> old but interesting topic.
>> >>>
>> >>> I believe I have enough info from you all to get this figured out now.
>> >>>
>> >>> Since depthcharch loads the FIT image at 0x81000000
>> >>> https://chromium.googlesource.com/chromiumos/platform/
>> depthcharge/+/master/board/nyan_big/defconfig#11
>> >>>
>> >>> I need to determine a suitable load address e.g fit load + 64k
>> >>>
>> >>> So 81000000 + 64k.
>> >>>
>> >>> One thing I am not certain about is adding the padding to the FIT .its
>> >>> config. How is this done?
>> >>>
>> >>> description = "U-Boot + FDT --------- THIS PADDING IS NEEDED SO THE
>> IMAGE
>> >>> STARTS AT THE RIGHT OFFSET";
>> >>
>> >>
>> >> Seems if I use the description "description = "U-Boot + FDT ---------
>> THIS
>> >> PADDING IS NEEDED SO THE IMAGE STARTS AT THE RIGHT OFFSET"; "
>> >>
>> >> I get a blank display that shows no signs of loading uboot BUT if I
>> use:
>> >>
>> >> description = "Chrome OS kernel image with one or more FDT blobs";
>> >>
>> >> Nyan tries to load something because the display flashes like a normal
>> >> bootup but immediately reboots into chromeos usb/sdcard recovery.
>> >>
>> >> So the hack in the the collabora uboot kernel-big.its doesnt seem to
>> work
>> >> anymore unless the padding is messing with the load address.
>> >>
>> >> I am using mainline uboot with CONFIG_SYS_TEXT_BASE 0x81000100 should
>> this
>> >> be changed?
>> >>
>> >> Also i am trying to figure out how padding is calculated in a fit image
>> >> and this is confusing. Is the padding the actual description length?
>> >>>
>> >>>
>> >>>>
>> >>>> > Thus the padding.
>> >>>> >
>> >>>> > Regards,
>> >>>> >
>> >>>> > Tomeu
>> >>>> >
>> >>>> > > But I do think to remember that it was only an issue once U-Boot
>> >>>> > > tried
>> >>>> > > to relocate itself.
>> >>>> > >
>> >>>> > > I don't see any reason why my old branch wouldn't work today on
>> >>>> > > your
>> >>>> > > machine, other than maybe your hw is a different revision with a
>> >>>> > > memory chip that wasn't supported back then? I also don't see why
>> >>>> > > mainline wouldn't work, provided you have that hack in the ITS.
>> >>>> > >
>> >>>> > > I'm adding Sjoerd to CC in case he remembers.
>> >>>> > >
>> >>>> > > Good luck,
>> >>>> > >
>> >>>> > > Tomeu
>> >>>> > >
>> >>>> > > > On Mon, May 1, 2017 at 7:45 PM, Matthew Gorski
>> <matt.gorski@gmail
>> >>>> > > > .com>
>> >>>> > > > wrote:
>> >>>> > > >
>> >>>> > > > >
>> >>>> > > > >
>> >>>> > > > > On Mon, May 1, 2017 at 7:34 PM, Simon Glass <
>> sjg at chromium.org>
>> >>>> > > > > wrote:
>> >>>> > > > >
>> >>>> > > > > > Hi Matthew,
>> >>>> > > > > >
>> >>>> > > > > > On 1 May 2017 at 17:27, Matthew Gorski <
>> matt.gorski at gmail.com
>> >>>> > > > > > > wrote:
>> >>>> > > > > > >
>> >>>> > > > > > >
>> >>>> > > > > > > On Mon, May 1, 2017 at 6:02 PM, Simon Glass
>> <sjg@chromium.o
>> >>>> > > > > > > rg> wrote:
>> >>>> > > > > > > >
>> >>>> > > > > > > > Hi Matthew,
>> >>>> > > > > > > >
>> >>>> > > > > > > > On 1 May 2017 at 14:30, Matthew Gorski
>> <matt.gorski@gmail
>> >>>> > > > > > > > .com> wrote:
>> >>>> > > > > > > > >
>> >>>> > > > > > > > >
>> >>>> > > > > > > > > On Mon, May 1, 2017 at 2:36 PM, Simon Glass
>> <sjg@chromi
>> >>>> > > > > > > > > um.org>
>> >>>> > > > > >
>> >>>> > > > > > wrote:
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > Hi Matthew,
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > On 1 May 2017 at 11:26, Matthew Gorski
>> <matt.gorski@g
>> >>>> > > > > > > > > > mail.com>
>> >>>> > > > > >
>> >>>> > > > > > wrote:
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > On Mon, May 1, 2017 at 1:03 PM, Simon Glass
>> <sjg@ch
>> >>>> > > > > > > > > > > romium.org>
>> >>>> > > > > >
>> >>>> > > > > > wrote:
>> >>>> > > > > > > > > > > >
>> >>>> > > > > > > > > > > > Hi Matthew,
>> >>>> > > > > > > > > > > >
>> >>>> > > > > > > > > > > > On 1 May 2017 at 10:40, Matthew Gorski
>> <matt.gors
>> >>>> > > > > > > > > > > > ki at gmail.com>
>> >>>> > > > > > > > > > > > wrote:
>> >>>> > > > > > > > > > > > > Let me repost this to the bottom. New to the
>> >>>> > > > > > > > > > > > > mailing list ;)
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > I am using chained boot to test uboot as a
>> FIT
>> >>>> > > > > > > > > > > > > image so I I
>> >>>> > > > > >
>> >>>> > > > > > don't
>> >>>> > > > > > > > > > > > > have to
>> >>>> > > > > > > > > > > > > flash to spl flash. Does
>> CONFIG_SPL_TEXT_BASE
>> >>>> > > > > > > > > > > > > need to be
>> >>>> > > > > >
>> >>>> > > > > > adjusted
>> >>>> > > > > > > > > > > > > for
>> >>>> > > > > > > > > > > > > chained boot?
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > I am using instructions to boot Linux for
>> Tegra
>> >>>> > > > > > > > > > > > > from
>> >>>> > > > > >
>> >>>> > > > > > sdcard/USB in
>> >>>> > > > > > > > > > > > > developer
>> >>>> > > > > > > > > > > > > mode. I can boot L4T fine with kernel v3.10.
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > What mainline branch should I try?
>> >>>> > > > > > > > > > > >
>> >>>> > > > > > > > > > > > There's only one mainline, here:
>> >>>> > > > > > > > > > > > http://git.denx.de/?p=u-boot.git;a=summary
>> >>>> > > > > > > > > > > >
>> >>>> > > > > > > > > > > > There are various custodian branches but I
>> don't
>> >>>> > > > > > > > > > > > believe the
>> >>>> > > > > >
>> >>>> > > > > > tegra
>> >>>> > > > > > > > > > > > one
>> >>>> > > > > > > > > > > > has anything different from mainline at
>> present.
>> >>>> > > > > > > > > > > >
>> >>>> > > > > > > > > > > > - Simon
>> >>>> > > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > I will give mainline a try with:
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > CONFIG_SYS_TEXT_BASE 0x8010E000
>> >>>> > > > > > > > > > > and
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > CONFIG_SPL_TEXT_BASE 0x80108000
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > I know I will also need:
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > CONFIG_DISPLAY_PORT=y
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > Do you mean CONFIG_DISPLAY? If so, it is already
>> >>>> > > > > > > > > > defined.
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > > CONFIG_VIDEO_TEGRA124=y
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > That is defined in mainline
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > for the console to display command prompt.
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > The FIT config I am using is from
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > here:https://git.collabora.com
>> /cgit/user/tomeu/u-bo
>> >>>> > > > > > > > > > > ot.git/
>> >>>> > > > > >
>> >>>> > > > > > commit/?h=nyan-big
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > Do I need to adjust:
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > load = <0>;
>> >>>> > > > > > > > > > > entry = <0>;
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > /dts-v1/;
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > / {
>> >>>> > > > > > > > > > > description = "U-Boot + FDT --------- THIS
>> >>>> > > > > > > > > > > PADDING IS NEEDED
>> >>>> > > > > >
>> >>>> > > > > > SO
>> >>>> > > > > > > > > > > THE
>> >>>> > > > > > > > > > > IMAGE STARTS AT THE RIGHT OFFSET";
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > Perhaps you need to adjust this? How was the length
>> >>>> > > > > > > > > > of it
>> >>>> > > > > >
>> >>>> > > > > > calcualted?
>> >>>> > > > > > > > >
>> >>>> > > > > > > > >
>> >>>> > > > > > > > > I am really not sure how the padding was
>> calculated. I
>> >>>> > > > > > > > > just assumed
>> >>>> > > > > > > > > this
>> >>>> > > > > > > > > kernel-big.its FIT config was correct for nyan_big.
>> I
>> >>>> > > > > > > > > will try
>> >>>> > > > > >
>> >>>> > > > > > using my
>> >>>> > > > > > > > > working linux kernel fit config.
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > > #address-cells = <1>;
>> >>>> > > > > > > > > > > images {
>> >>>> > > > > > > > > > > kernel at 1{
>> >>>> > > > > > > > > > > description = "kernel";
>> >>>> > > > > > > > > > > data = /incbin/("u-boot-dtb.bin");
>> >>>> > > > > > > > > > > type = "kernel_noload";
>> >>>> > > > > > > > > > > arch = "arm";
>> >>>> > > > > > > > > > > os = "linux";
>> >>>> > > > > > > > > > > compression = "none";
>> >>>> > > > > > > > > > > load = <0>;
>> >>>> > > > > > > > > > > entry = <0>;
>> >>>> > > > > > > > > > > };
>> >>>> > > > > > > > > > > fdt at 1{
>> >>>> > > > > > > > > > > description =
>> "tegra124-nyan-big.dtb";
>> >>>> > > > > > > > > > > data = /incbin/("dts/dt.dtb");
>> >>>> > > > > > > > > > > type = "flat_dt";
>> >>>> > > > > > > > > > > arch = "arm";
>> >>>> > > > > > > > > > > compression = "none";
>> >>>> > > > > > > > > > > hash at 1{
>> >>>> > > > > > > > > > > algo = "sha1";
>> >>>> > > > > > > > > > > };
>> >>>> > > > > > > > > > > };
>> >>>> > > > > > > > > > > };
>> >>>> > > > > > > > > > > configurations {
>> >>>> > > > > > > > > > > default = "conf at 1";
>> >>>> > > > > > > > > > > conf at 1{
>> >>>> > > > > > > > > > > kernel = "kernel at 1";
>> >>>> > > > > > > > > > > fdt = "fdt at 1";
>> >>>> > > > > > > > > > > };
>> >>>> > > > > > > > > > > };
>> >>>> > > > > > > > > > > };
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > please let me know if I should also adjust the
>> SPL
>> >>>> > > > > > > > > > > CONFIG even
>> >>>> > > > > >
>> >>>> > > > > > though
>> >>>> > > > > > > > > > > I
>> >>>> > > > > > > > > > > am chainbooting uboot:
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > > https://www.chromium.org/chrom
>> ium-os/firmware-porti
>> >>>> > > > > > > > > > > ng-guide/
>> >>>> > > > > >
>> >>>> > > > > > using-nv-u-boot-on-the-samsung
>> -arm-chromebook#TOC-Installing
>> >>>> > > > > > -nv-U-Boot-chained-U-Boot-method-
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > This is exynos, where we booted directly into
>> U-Boot.
>> >>>> > > > > > > > > > Actually I'm
>> >>>> > > > > > > > > > wondering we should boot directly into U-Boot
>> >>>> > > > > > > > > > (instead of SPL) on
>> >>>> > > > > >
>> >>>> > > > > > nyan
>> >>>> > > > > > > > > > also. Perhaps someone at collabora would know? Did
>> >>>> > > > > > > > > > you search the
>> >>>> > > > > > > > > > mailing list?
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > Regards,
>> >>>> > > > > > > > > > Simon
>> >>>> > > > > > > > >
>> >>>> > > > > > > > >
>> >>>> > > > > > > > > I have not searched the mailing list. What should I
>> >>>> > > > > > > > > search for?
>> >>>> > > > > > > > > Booting
>> >>>> > > > > > > > > nyan to u-boot directly bypassing SPL?
>> >>>> > > > > > > >
>> >>>> > > > > > > > Here are two subjects to search for:
>> >>>> > > > > > > >
>> >>>> > > > > > > > Veyron-speedy u-boot
>> >>>> > > > > > > > [PATCH 0/20] tegra: Expand Nyan-big support
>> >>>> > > > > > > >
>> >>>> > > > > > > > Regards,
>> >>>> > > > > > > > Simon
>> >>>> > > > > > >
>> >>>> > > > > > >
>> >>>> > > > > > > Very odd if I do not use "#address-cells = <1>;" the
>> >>>> > > > > > > display flashes and
>> >>>> > > > > > > reboots into recovery but if I do use #address-cells =
>> <1>;
>> >>>> > > > > > > in my FIT
>> >>>> > > > > >
>> >>>> > > > > > config
>> >>>> > > > > > > I get a blank screen
>> >>>> > > > > > > so something is working when not using the padding.
>> >>>> > > > > >
>> >>>> > > > > > If you figure out where u-boot-dtb.bin needs to start by
>> >>>> > > > > > looking at
>> >>>> > > > > > depthcharge or where the kernel starts, then you can figure
>> >>>> > > > > > out how
>> >>>> > > > > > long the padding needs to be at the start of the FIT.
>> Rather
>> >>>> > > > > > than
>> >>>> > > > > > guessing...!
>> >>>> > > > > >
>> >>>> > > > > > - Simon
>> >>>> > > > > >
>> >>>> > > > > > Okay so depthcharge starts at 0x81000000 from here:
>> >>>> > > > >
>> >>>> > > > > https://chromium.googlesource.com/chromiumos/platform/
>> >>>> > > > > depthcharge/+/master/board/nyan_big/defconfig#11
>> >>>> > > > >
>> >>>> > > > > In my System.map for u-boot after building says the start is:
>> >>>> > > > > 81000100 T __image_copy_start
>> >>>> > > > > 81000100 T _start
>> >>>> > > > >
>> >>>> > > > > Hence the define CONFIG_SYS_TEXT_BASE 0x81000100
>> >>>> > > > >
>> >>>> > > > > So you say use 0x81000000 as the CONFIG_SYS_TEXT_BASE and not
>> >>>> > > > > 0x81000100
>> >>>> > > > > correct?
>> >>>> > > > >
>> >>>> > > > > > >
>> >>>> > > > > > > /dts-v1/;
>> >>>> > > > > > >
>> >>>> > > > > > > / {
>> >>>> > > > > > > description = "Chrome OS nyan u-boot chain boot
>> >>>> > > > > > > method";
>> >>>> > > > > > > #address-cells = <1>;
>> >>>> > > > > > > images {
>> >>>> > > > > > > kernel at 1{
>> >>>> > > > > > >
>> >>>> > > > > > > >
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > >
>> >>>> > > > > > > > > > > >
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > On May 1, 2017 12:11 PM, "Matthew Gorski" <
>> >>>> > > > > >
>> >>>> > > > > > matt.gorski at gmail.com>
>> >>>> > > > > > > > > > > > > wrote:
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > On May 1, 2017 11:45 AM, "Simon Glass"
>> <sjg@chr
>> >>>> > > > > > > > > > > > > omium.org>
>> >>>> > > > > >
>> >>>> > > > > > wrote:
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > Hi Matthew,
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > On 1 May 2017 at 09:37, Matthew Gorski
>> <matt.go
>> >>>> > > > > > > > > > > > > rski at gmail.com>
>> >>>> > > > > > > > > > > > > wrote:
>> >>>> > > > > > > > > > > > > > Thanks for the reply Simon.
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > I have been trying to find the System.map
>> for
>> >>>> > > > > > > > > > > > > > depthcharge to
>> >>>> > > > > >
>> >>>> > > > > > see
>> >>>> > > > > > > > > > > > > > the
>> >>>> > > > > > > > > > > > > > kernel
>> >>>> > > > > > > > > > > > > > load address but I am unable to find
>> >>>> > > > > > > > > > > > > > anything. I have tried
>> >>>> > > > > > > > > > > > > > multiple
>> >>>> > > > > > > > > > > > > > CONFIG_SYS_TEXT_BASE settings with no luck.
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > How did you choose what to use? Also note
>> that
>> >>>> > > > > > > > > > > > > Tegra uses SPL
>> >>>> > > > > >
>> >>>> > > > > > to
>> >>>> > > > > > > > > > > > > start, so you may need to adjust
>> >>>> > > > > > > > > > > > > CONFIG_SPL_TEXT_BASE instead.
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > I am creating my sdcard with a standard
>> linux
>> >>>> > > > > > > > > > > > > > (Linux for
>> >>>> > > > > >
>> >>>> > > > > > Tegra)
>> >>>> > > > > > > > > > > > > > rootfs:
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > Did these instructions come from a web site
>> >>>> > > > > > > > > > > > > somewhere?
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > Partition an SD card
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > sudo cgpt create <MMC BLOCK DEVICE>
>> >>>> > > > > > > > > > > > > > sudo cgpt add -b 34 -s 32768 -P 1 -S 1 -t
>> >>>> > > > > > > > > > > > > > kernel <MMC BLOCK
>> >>>> > > > > > > > > > > > > > DEVICE>
>> >>>> > > > > > > > > > > > > > # 16
>> >>>> > > > > > > > > > > > > > MB
>> >>>> > > > > > > > > > > > > > kernel image partition
>> >>>> > > > > > > > > > > > > > sudo cgpt add -b 32802 -s <ROOT PARTITION
>> >>>> > > > > > > > > > > > > > SIZE in 512B
>> >>>> > > > > >
>> >>>> > > > > > sectors>
>> >>>> > > > > > > > > > > > > > -t
>> >>>> > > > > > > > > > > > > > rootfs
>> >>>> > > > > > > > > > > > > > <MMC BLOCK DEVICE>
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > cgpt doesn't seem to create a protective
>> MBR.
>> >>>> > > > > > > > > > > > > > If one is not
>> >>>> > > > > > > > > > > > > > already
>> >>>> > > > > > > > > > > > > > in
>> >>>> > > > > > > > > > > > > > place, it can be created with:
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > sudo gdisk <MMC BLOCK DEVICE> # and enter
>> >>>> > > > > > > > > > > > > > command w
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > Copy data to the SD card
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > sudo dd if=./kernelpart.bin of=<MMC BLOCK
>> >>>> > > > > > > > > > > > > > DEVICE>p1
>> >>>> > > > > > > > > > > > > > sudo mkfs.ext4 <MMC BLOCK DEVICE>p2
>> >>>> > > > > > > > > > > > > > sudo mount <MMC BLOCK DEVICE>p2 /mnt/
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > How are you actually making it boot? Is this
>> in
>> >>>> > > > > > > > > > > > > dev mode with
>> >>>> > > > > >
>> >>>> > > > > > USB
>> >>>> > > > > > > > > > > > > boot
>> >>>> > > > > > > > > > > > > enabled and pressing Ctrl-U?
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > Also, as this is a mailing list, please avoid
>> >>>> > > > > > > > > > > > > top-posting.
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > - Simon
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > I am using chained boot to test uboot as a
>> FIT
>> >>>> > > > > > > > > > > > > image so I I
>> >>>> > > > > >
>> >>>> > > > > > don't
>> >>>> > > > > > > > > > > > > have to
>> >>>> > > > > > > > > > > > > flash to spl flash. Does
>> CONFIG_SPL_TEXT_BASE
>> >>>> > > > > > > > > > > > > need to be
>> >>>> > > > > >
>> >>>> > > > > > adjusted
>> >>>> > > > > > > > > > > > > for
>> >>>> > > > > > > > > > > > > chained boot?
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > I am using instructions to boot Linux for
>> Tegra
>> >>>> > > > > > > > > > > > > from
>> >>>> > > > > >
>> >>>> > > > > > sdcard/USB in
>> >>>> > > > > > > > > > > > > developer
>> >>>> > > > > > > > > > > > > mode. I can boot L4T fine with kernel v3.10.
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > What mainline branch should I try?
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > On Mon, May 1, 2017 at 11:14 AM, Simon
>> Glass
>> >>>> > > > > > > > > > > > > > <
>> >>>> > > > > >
>> >>>> > > > > > sjg at chromium.org>
>> >>>> > > > > > > > > > > > > > wrote:
>> >>>> > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > Hi Matthew,
>> >>>> > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > On 1 May 2017 at 08:43, Matthew Gorski <
>> >>>> > > > > >
>> >>>> > > > > > matt.gorski at gmail.com>
>> >>>> > > > > > > > > > > > > > > wrote:
>> >>>> > > > > > > > > > > > > > > > I am porting u-boot to nyan_big and
>> need
>> >>>> > > > > > > > > > > > > > > > some input. I
>> >>>> > > > > >
>> >>>> > > > > > have
>> >>>> > > > > > > > > > > > > > > > been
>> >>>> > > > > > > > > > > > > > > > searching
>> >>>> > > > > > > > > > > > > > > > high and low and found this thread
>> here:
>> >>>> > > > > > > > > > > > > > > > [U-Boot] [PATCH
>> >>>> > > > > >
>> >>>> > > > > > 0/20]
>> >>>> > > > > > > > > > > > > > > > tegra:
>> >>>> > > > > > > > > > > > > > > > Expand
>> >>>> > > > > > > > > > > > > > > > Nyan-big support
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > https://lists.denx.de/pipermai
>> l/u-boot/2
>> >>>> > > > > > > > > > > > > > > > 015-March/209530.
>> >>>> > > > > >
>> >>>> > > > > > html
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > I have tried to build u-boot with the
>> >>>> > > > > > > > > > > > > > > > branch here:
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > https://git.collabora.com/cgit
>> >>>> > > > > >
>> >>>> > > > > > /user/tomeu/u-boot.git/commit/?h=nyan-big
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > and also the official chromium next
>> >>>> > > > > > > > > > > > > > > > branch
>> >>>> > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > Have you tried mainline U-Boot? It
>> already
>> >>>> > > > > > > > > > > > > > > supports nyan-big.
>> >>>> > > > > > > > > > > > > > > I'm
>> >>>> > > > > > > > > > > > > > > not
>> >>>> > > > > > > > > > > > > > > sure about the situation with the
>> >>>> > > > > > > > > > > > > > > downstream trees.
>> >>>> > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > I followed building instructions here:
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > https://www.chromium.org/chrom
>> >>>> > > > > >
>> >>>> > > > > > ium-os/firmware-porting-guide/
>> using-nv-u-boot-on-the-samsung
>> >>>> > > > > > -arm-chromebook
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > I build with these commands:
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > mkimage -e 0x81000100 -a 0x81000100 -f
>> >>>> > > > > > > > > > > > > > > > kernel-big.its
>> >>>> > > > > > > > > > > > > > > > kernel-u-boot
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > (with and without the load address
>> >>>> > > > > > > > > > > > > > > > setting)
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > vbutil_kernel --arch arm --pack
>> >>>> > > > > > > > > > > > > > > > kernel.bin --keyblock
>> >>>> > > > > > > > > > > > > > > > /usr/share/vboot/devkeys/kerne
>> l.keyblock
>> >>>> > > > > > > > > > > > > > > > --signprivate
>> >>>> > > > > > > > > > > > > > > > /usr/share/vboot/devkeys/kerne
>> l_data_key.
>> >>>> > > > > > > > > > > > > > > > vbprivk
>> >>>> > > > > >
>> >>>> > > > > > --version 1
>> >>>> > > > > > > > > > > > > > > > --config
>> >>>> > > > > > > > > > > > > > > > dummy.txt --vmlinuz kernel-u-boot --
>> >>>> > > > > > > > > > > > > > > > bootloader dummy.txt
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > I have had numerous failed attempts to
>> >>>> > > > > > > > > > > > > > > > boot uboot from
>> >>>> > > > > >
>> >>>> > > > > > sdcard
>> >>>> > > > > > > > > > > > > > > > mmcblk1p1
>> >>>> > > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > > Any help is appreciated I have only
>> >>>> > > > > > > > > > > > > > > > gotten a blank screen
>> >>>> > > > > > > > > > > > > > > > after
>> >>>> > > > > > > > > > > > > > > > weeks
>> >>>> > > > > > > > > > > > > > > > of
>> >>>> > > > > > > > > > > > > > > > flashing. I can boot custom v3.10
>> >>>> > > > > > > > > > > > > > > > kernels so I assume I am
>> >>>> > > > > > > > > > > > > > > > using
>> >>>> > > > > > > > > > > > > > > > the
>> >>>> > > > > > > > > > > > > > > > correct building procedure. Thanks in
>> >>>> > > > > > > > > > > > > > > > advance for help
>> >>>> > > > > >
>> >>>> > > > > > from
>> >>>> > > > > > > > > > > > > > > > the
>> >>>> > > > > > > > > > > > > > > > u-boot
>> >>>> > > > > > > > > > > > > > > > community.
>> >>>> > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > It is possible that it needs a particular
>> >>>> > > > > > > > > > > > > > > address due to
>> >>>> > > > > > > > > > > > > > > limitations
>> >>>> > > > > > > > > > > > > > > in the FIT support on Nyan. I'm not sure
>> >>>> > > > > > > > > > > > > > > what it is but
>> >>>> > > > > >
>> >>>> > > > > > might be
>> >>>> > > > > > > > > > > > > > > able
>> >>>> > > > > > > > > > > > > > > to take a look at some point.
>> >>>> > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > How are you building your SD card? Are
>> you
>> >>>> > > > > > > > > > > > > > > following some
>> >>>> > > > > > > > > > > > > > > instructions
>> >>>> > > > > > > > > > > > > > > from somewhere?
>> >>>> > > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > > > Regards,
>> >>>> > > > > > > > > > > > > > > Simon
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > > > >
>> >>>> > > > > > > > >
>> >>>> > > > > > > > >
>> >>>> > > > > > >
>> >>>> > > > > > >
>> >>>> > > > >
>> >>>> > > > >
>> >>>> > > >
>> >>>> > > > _______________________________________________
>> >>>> > > > U-Boot mailing list
>> >>>> > > > U-Boot at lists.denx.de
>> >>>> > > > https://lists.denx.de/listinfo/u-boot
>> >>>>
>> >>>> --
>> >>>> Sjoerd Simons
>> >>>> Collabora Ltd.
>> >>>
>> >>>
>> >>
>> >
>> _______________________________________________
>> U-Boot mailing list
>> U-Boot at lists.denx.de
>> https://lists.denx.de/listinfo/u-boot
>>
>
>