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@1{ description = "kernel"; data = /incbin/("u-boot-dtb.bin"); type = "kernel_noload"; arch = "arm"; os = "linux"; compression = "none"; load = <0>; entry = <0>; }; fdt@1{ description = "tegra124-nyan-big.dtb"; data = /incbin/("dts/dt.dtb"); type = "flat_dt"; arch = "arm"; compression = "none"; hash@1{ algo = "sha1"; }; }; }; configurations { default = "conf@1"; conf@1{ kernel = "kernel@1"; fdt = "fdt@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-...
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-... > > > > 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