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

Simon Glass
2017-05-01T22:02:19Z

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@chromium.org> wrote:
>>
>> Hi Matthew,
>>
>> On 1 May 2017 at 11:26, Matthew Gorski <matt.gorski@gmail.com> wrote:
>> >
>> >
>> >
>> > On Mon, May 1, 2017 at 1:03 PM, Simon Glass <sjg@chromium.org> wrote:
>> >>
>> >> Hi Matthew,
>> >>
>> >> On 1 May 2017 at 10:40, Matthew Gorski <matt.gorski@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-boot.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/chromium-os/firmware-porting-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

>>
>>
>> >>
>> >> >
>> >> > On May 1, 2017 12:11 PM, "Matthew Gorski" <matt.gorski@gmail.com>
>> >> > wrote:
>> >> >
>> >> > On May 1, 2017 11:45 AM, "Simon Glass" <sjg@chromium.org> wrote:
>> >> >
>> >> > Hi Matthew,
>> >> >
>> >> > On 1 May 2017 at 09:37, Matthew Gorski <matt.gorski@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@chromium.org>
>> >> >> wrote:
>> >> >>>
>> >> >>> Hi Matthew,
>> >> >>>
>> >> >>> On 1 May 2017 at 08:43, Matthew Gorski <matt.gorski@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/pipermail/u-boot/2015-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/chromium-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/kernel.keyblock --signprivate
>> >> >>> > /usr/share/vboot/devkeys/kernel_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
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >> >
>> >
>> >
>
>