Nios II uClinux boot

[ASRIV6]

Hi all, I have a custom Cyclone II board with 8mb sdram and flash, I want to boot uClinux in it.

I downloaded the stuff for uClinux boot in DE2-115 board but it requires 128mb ram

please help me where to start???

thanks in advance

thanks

[Abe]

You can refer to the following AN/tutorial on how to use MicroC/OS-II with NIOS. The memory footprint needed for a basic uCOS system is 1K+ so depending on how you configure the system the memory footprint will vary.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/tt/tt_nios2_microc_osii_tutorial.pdf

[GuaBin_N_Intel]

You may refer some guidance here to get started

1) https://fpgawiki.intel.com/wiki/UClinux => Let's start it step by step

2) https://fpgawiki.intel.com/wiki/UClinuxDist, How to boot up

[ASRIV6]

Hi Great thanks for all your replies, I googled and youtubed a lot and found many tutorials but as i have a custom board none matched mine.

so i decided to start from ground following the tutorials, till now i have made the Qsys system,

good news i have 32MB on board RAM h57v2562gtr-75c

but i have a confusion : the cpu is 32bit, but my RAM has only 16bit data lines, will it be a problem??

for THE components please click on the following links of my google drive,

SYSTEM : https://drive.google.com/open?id=1z08pRWrfmOHU0ZU6KEM2lCVhZDHMowMP CPU : https://drive.google.com/open?id=1al9st1mU9bCHLoddMTswu1tsU7brI0rE SDRAM: https://drive.google.com/open?id=1YbV4rS3poOKPFLl8U3K18TYco3-hBmaz SDRAM_TIMINGS: https://drive.google.com/open?id=1g8-zIl1-Eu-Z5eEvC7hqLkMjbba4ejHJ JTAG: https://drive.google.com/open?id=1bkFR47tpzvqT8USkgIpQBZ_mfYWJb16c TIMER: https://drive.google.com/open?id=16MxmKIm-wbB0OYv4ELiyM7DwVXUDCCxT UART : https://drive.google.com/open?id=1pipQjNQl9QLCsmlObjdgqzyoIOd7gFXG REPORT : https://drive.google.com/open?id=1bgGNpyV5zOp8XubkuXEujGm8xdT291tk

Please have a look on the above work and please check is it OK to move further ??

waiting for your reply,

thanks in advance

thanks

[GuaBin_N_Intel]

Data width difference between master and slave would not have any issue. Qsys inserts width adapter in the interconnect to overcome it https://www.intel.co.jp/content/dam/altera-www/global/ja_JP/pdfs/literature/hb/qts/qsys_interconnect.pdf, figure 7-2

[ASRIV6]

great thanks sir actually i am following this tutorial : https://rocketboards.org/foswiki/Documentation/NiosIILinuxUserManual

I m just near the destination, but generating the vmImage gives me this error,

aashish@aashish:~/linux-socfpga$ make

 CC   kernel/bounds.s

nios2-linux-gnu-gcc: error: unrecognized command line option '-march=r1'

nios2-linux-gnu-gcc: error: unrecognized command line option '-mno-bmx'

nios2-linux-gnu-gcc: error: unrecognized command line option '-mno-cdx'

Kbuild:21: recipe for target 'kernel/bounds.s' failed

make[1]: *** [kernel/bounds.s] Error 1

Makefile:1105: recipe for target 'prepare0' failed

make: *** [prepare0] Error 2

aashish@aashish:~/linux-socfpga$

I am stuck now, please help me, please

thanks in advance

[ASRIV6]

Hi all,

I fixed that problem : I installed openssl and it gone, but now make vmImage gives another error,

make[1]: *** No rule to make target 'arch/nios2/boot/dts//home/aashish/nios.dtb', needed by 'arch/nios2/boot/dts//home/aashish/nios.dtb.S'. Stop.

Makefile:1055: recipe for target 'arch/nios2/boot/dts' failed

make: *** [arch/nios2/boot/dts] Error 2

I made the dtb file and keep both files (dts and dtb) at both places :  arch/nios2/boot/dts and home/aashish/ 

but still the same error : i again stuck

please help me sir

[ASRIV6]

Hi, Happy New Year to all, there is a good news I successfully generated the vmlinux and vmimage by re-installing some missing libs., but not got full success yet,

one thing that i feel not OK is that the size of vmlinux is 140.1 MB and vmimage is 4.7 MB and the SDRAM on my board is 32 MBytes, does it mean that I will be unable to boot Linux or I have to increase my SDRAM (that will we really very painful task for me, you know!)

OR in the above case can I reduce the size of vmlinux to fit in my SDRAM size, how??

OR can I use other smaller files (less than 32 MBytes) : vmlinux.bin = 10.8 MB, vmlinux.gz = 4.7 MB, vmimage = 4.7 MB to boot linux.

OR generate some other file to boot OR etc.

I am saying this because my nios2-download -g vmlinux command is not working, always the verification fails. (please see the attached images)

I am totally in dark, please help me. thanks