[U-Boot] no DTB with nand SPL on sama5d3

[Daniel Evans]

Follow up question:

I notice that u-boot-spl-pad.bin is empty even though CONFIG_SPL_PAD_TO = CONFIG_SPL_MAX_SIZE = 0x18000.  Is that why it isn’t find the dtb because it isn’t padded properly?

Dan

> On Jan 17, 2019, at 2:09 AM, Eugen.Hristev at microchip.com wrote:
> 
> 
> 
> On 17.01.2019 11:05, Simon Goldschmidt wrote:
>> On Thu, Jan 17, 2019 at 10:02 AM <Eugen.Hristev at microchip.com> wrote:
>>> 
>>> 
>>> 
>>> On 16.01.2019 21:05, Daniel Evans wrote:
>>>> Hello,
>>>> 
>>>> Yes, I am trying to load the U-boot SPL
>>>> 
>>>> What I posted previously was a custom board.  I switched over to the sama5d3_xplained and all I get with sama5d3_xplained_nandflash_defconfig is ROMBOOT.
>>> 
>>> This is definitely weird. Are you using vanilla u-boot and no changes on
>>> top with the sama5d3_xplained? Looks like not even your console works in
>>> spl, or, you have a bad binary .
>> 
>> With debug uart enabled it shows the DTB is missing. So when using the
>> mainline defconfig (where debug uart is disabled) it fails to find a console as
>> the DTB is missing. That's unfortunate, but expected behaviour with DM_SERIAL,
>> I guess.
>> 
>> I don't know the hardware, but the real problem seems to me that the binary
>> being flashed is somehow missing the DTB?
> 
> Yes that can happen, I suggested that some parts of the SPL are missing 
> - either the binary flashed is smaller than the real size (and the DTB, 
> being at the end is not copied...),
> 
> or the value inside the 6th vector is wrong, and the first stage 
> bootloader is not copying enough data from NAND to RAM when executing 
> the SPL binary. The first stage BL only copies the number of bytes given 
> by 6th vector value
> 
>> 
>> Regards,
>> Simon
>> 
>>> 
>>>> 
>>>> AT91bootstrap works fine.
>>>> 
>>>> I know there was the issue with the nand_header showing up for the SD card but that shouldn’t effect the nand.  Some other patch I am missing to get a non-modified boot.bin nand working?
>>> 
>>> How are you writing your nandflash ? are you using our sam-ba tool to
>>> write it ? do you use writeboot applet ?
>>> 
>>>> 
>>>> The size of the 6th reset vector looks correct, with the assumption that it does not include the 208 bytes of nand_header?
>>> 
>>> Yes it should not include it. And if you write using sam-ba the nand
>>> header will be written by sam-ba, so your binary should not include it
>>> already.
>>> 
>>> I also suggest you open up a support ticket on support.microchip.com as
>>> our FAE have a lot of experience to assist with such situations.
>>> 
>>> Hope this helps,
>>> Eugen
>>> 
>>>> 
>>>> Dan
>>>> 
>>>> 
>>>> 
>>>>> On Jan 16, 2019, at 6:02 AM, Eugen.Hristev at microchip.com wrote:
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> On 16.01.2019 03:13, Daniel Evans wrote:
>>>>>> After flashing my boot.bin to nand I get the following output:
>>>>>> 
>>>>>> RomBOOT
>>>>>> <debug_uart> Missing DTB
>>>>>> ### ERROR ### Please RESET the board ###
>>>>>> 
>>>>>> I found the error message in fdtdec.c, but not sure what I am missing.  I have checked that my DTB is included in the boot.bin output.  Any insight on what I am missing?
>>>>> 
>>>>> Hello Daniel,
>>>>> 
>>>>> Which defconfig are you using when building u-boot ?
>>>>> 
>>>>> You are trying to load the U-boot SPL right ?
>>>>> 
>>>>> It doesn't look like you even get to the point when you get to load the
>>>>> u-boot proper, so maybe there are missing parts from your SPL, or the
>>>>> size inside the 6th reset vector is not correctly calculated
>>>>> 
>>>>> Did you try with our at91bootstrap proprietary second level bootloader
>>>>> and get the same issue when booting the proper u-boot with it ?
>>>>> 
>>>>> Hope this helps,
>>>>> 
>>>>> Eugen
>>>>> 
>>>>>> 
>>>>>> Dan
>>>>>> _______________________________________________
>>>>>> U-Boot mailing list
>>>>>> U-Boot at lists.denx.de
>>>>>> https://lists.denx.de/listinfo/u-boot
>>>>>> 
>>>> 
>>>> 
>>> _______________________________________________
>>> U-Boot mailing list
>>> U-Boot at lists.denx.de
>>> https://lists.denx.de/listinfo/u-boot