uImage Load Address Issue

[Daniel (Xiaolong) Wang]

Hi Matthias and Paul,

Thank you for your response. The board I was working on is a customized IMX6. Turn out the memory is mapped into different region. Thanks to Adam’s help. the problem is solved by editing

l4/mk/platforms/imx6.conf:
the UART numbers (as seen from the Linux output):
PLATFORM_NAME        = "Freescale i.MX6"
PLATFORM_ARCH        = arm
PLATFORM_RAM_BASE    = 0x80000000
PLATFORM_RAM_SIZE_MB = 256
PLATFORM_UART_NR     = 1

Thank you very much!
-Dan
> On Jul 23, 2017, at 3:26 PM, Matthias Lange <matthias.lange at kernkonzept.com> wrote:
> 
> Hi Daniel,
> 
> On 07/21/2017 08:19 PM, Daniel (Xiaolong) Wang wrote:
>> Hi All,
>> 
>> I’m testing L4re on a customized I.MX6 Solo-X-4 board. I found that the fiasco kernel (the simple hello world example built into an uimage) cannot be load by the U-boot. It shows “data abort". The reason I guess it is due to different loading address. The U-boot’s default $loadaddr is 0x80800000, but the uimage I build using the L4re buildsystem has:
>> 
>> Load Address: 11000000
>> Entry Point:  11000000
>>  ==> Installing bootstrap.uimage in image directory
>>  Image size(s) in bytes:
>>        bootstrap_hello-cfg.elf:  1470844
>>                  bootstrap.raw:  1437696
>>               bootstrap.uimage:  1437760
>>  Start address: 0x11000000
>> 
>> 
>> I used the RAM_BASE=0x8080000 option to change the starting address when I made the image (as shown below), the boot did not crash but the kernel hangs at “Starting kernel..."
> 
> Did you provide the correct platform type when you built the image? You
> should do something like this
> 
> make PLATFORM_TYPE=imx6 RAM_SIZE_MB=1024 UART_NR=1 E=hello uimage
> 
> Change the values of RAM_SIZE_MB and UART_NR according to your platform.
> 
> Best,
> Matthias.
> 
>> 
>> Load Address: 01000000
>> Entry Point:  01000000
>>  ==> Installing bootstrap.uimage in image directory
>>  Image size(s) in bytes:
>>        bootstrap_hello-cfg.elf:  1470844
>>                  bootstrap.raw:  1437696
>>               bootstrap.uimage:  1437760
>>  Start address: 0x801000000
>> 
>> I think it is still related to the different load address. But I do not know how to fix it. I would really appreciate if someone can point me to a right direction.
>> 
>> Thanks
>> -Dan
>> 
>> 
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>> 
> 
> 
> -- 
> Matthias Lange, matthias.lange at kernkonzept.com <mailto:matthias.lange at kernkonzept.com>, +49-351-41 888 614
> 
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