Marcin Niestrój wrote:
On 12.04.2018 06:37, sdrb wrote:
Hi Marcin,
Marcin Niestroj wrote:
Hi Witold,
On 11.04.2018 08:18, sdrb wrote:
Hi,
I use Grinn's chiliSOM and very old U-boot 2014.07 on it.
Unfortunately the newest u-boot doesn't run SPL properly - so I'm
forced to use 2014.07 version.
What are your problems exactly with SPL? What version of chiliSOM does
you board have? Mainline u-boot with SPL runs successfully on
chiliboard 1.1 (containing chiliSOM 2.2).
I've got ChiliSOM 2.2 version.
I don't use chiliboard - I've got only chiliSOM 2.2 integrated in our
carrying board.
The problem is that SPL is not starting as good as in 2014.07 version.
I mean - firmware shows only a few 'C' letters and then it hungs in
some infinite loop:
CCCCCCCCCCCCCCC
but when at that moment I press Reset button it starts but
unfortunately something is going wrong because it restarts:
U-Boot SPL 2018.05-rc1-00251-g2600df4f8e-dirty (Apr 12 2018 - 05:59:00
+0200)
Trying to boot from MMC1
CCCCCCCC
U-Boot SPL 2018.05-rc1-00251-g2600df4f8e-dirty (Apr 12 2018 - 05:59:00
+0200)
Trying to boot from MMC1
CCCCCCCC
U-Boot SPL 2018.05-rc1-00251-g2600df4f8e-dirty (Apr 12 2018 - 05:59:00
+0200)
Trying to boot from MMC1
CCCCCCCC
U-Boot SPL 2018.05-rc1-00251-g2600df4f8e-dirty (Apr 12 2018 - 05:59:00
+0200)
Trying to boot from MMC1
So - to run newest u-boot I need to power-on board and then press reset.
Could you describe what is you BOOT[4:0] configuration? And you want to
boot from MMC1, right?
If I read the BOOT[4:0] properly it is: 0011.
I want to boot from SD card.
If you are booting u-boot 2014.07 version, do you still see CCCCC on the
beginning?
Yes
I have noticed something else on chiliboard. Device is normally powered
on with no problems (after plugging in USB cable for example). But after
it powers off (to RTC only), then I push power button to wakeup device,
it shows CCCCCCC in infinite loop. To recover from this state I need
to plug out SD card and plug it in once again. Then device boots
correctly. Thought this is hardware issue and didn't have enough
time to look at that.
I wonder if both issues have the same root cause...
I have also noticed that sometimes the whole system is not starting
properly and still shows 'C' letters. And yes - I also replug SD card or
turn off the power to fix the problem.
I dig a litte in source of latest uboot and noticed that the last
procedure which is invoked in SPL is jump_to_image_no_args().
This proc tries to go to 0x80800000 addr and then reset appears.
But before it tries to go into this addr it successfully reads
u-boot.img file. So rather the problem is in invocation of TPL than in
SPL.
I wonder why the u-boot.img file is only 389392 bytes long while in
old u-boot it was 1.7 MB.
Additionally - I see no device tree source file for chilisom in git
repo but the configuration file mention it in CONFIG_DEFAULT_FDT_FILE.
This configuration sets name of dts file to be used with Linux kernel.
Ok, I thought that u-boot uses it for its own purposes.
Regards,
WK
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