SoCrates boot problem with custom preloader

[Altera_Forum]

I'm using SoCrates V1.2 devboard. 

I've started to study perfoming tasks from SoCrates Workshop Labs. Lab 1 with no problem. Lab 2 - got next problem: U-Boot can't initialize the sd card when using my preloader (preloader-mkimage.bin made by using instructions from Lab). Here is the boot log:  u-boot 2012.10-00002-g97ca318 (jul 04 2013 - 13:18:58)  cpu : altera socfpga platform board : ebv socrates - cyclone v soc fpga board dram: 1 gib mmc: designware sd/mmc: 0 error: dw_pull: stat 0x200 request failed. status: 0x00000200 error: dw_pull: stat 0x200 request failed. status: 0x00000200 error: dw_pull: stat 0x200 request failed. status: 0x00000200 error: dw_pull: stat 0x200 request failed. status: 0x00000200 mmc init failed  But everything goes fine when using preloader supplied with the devboard. Please help me to find a solution.

[Altera_Forum]

--- Quote Start ---  I'm using SoCrates V1.2 devboard. I've started to study perfoming tasks from SoCrates Workshop Labs. Lab 1 with no problem. Lab 2 - got next problem: U-Boot can't initialize the sd card when using my preloader (preloader-mkimage.bin made by using instructions from Lab). Here is the boot log:  u-boot 2012.10-00002-g97ca318 (jul 04 2013 - 13:18:58)  cpu : altera socfpga platform board : ebv socrates - cyclone v soc fpga board dram: 1 gib mmc: designware sd/mmc: 0 error: dw_pull: stat 0x200 request failed. status: 0x00000200 error: dw_pull: stat 0x200 request failed. status: 0x00000200 error: dw_pull: stat 0x200 request failed. status: 0x00000200 error: dw_pull: stat 0x200 request failed. status: 0x00000200 mmc init failed  But everything goes fine when using preloader supplied with the devboard. Please help me to find a solution.  --- Quote End ---    Hello I've faced the same problem when I generated preloader with Quartus 13.1 for SD card provided with the board. Please download this archive: http://www.rocketboards.org/pub/documentation/ebvsocratesworkshops/socrates-training.tgz There's a script to create fresh SD card with all you need to load linux. So you need to use this script. Here's reference design for Q13.1: http://www.rocketboards.org/pub/projects/socrateshwreferencedesign/socrates_simplerd_v13.1.zip If you generate preloader and write it to SD card everything should be OK. Also I would recommend to use PUTTY instead of TerraTerm. For me it works more stable. Regards