Boot from microSD

K Y

Other Parts Discussed in Thread: AM3359

Hello!

I have some trouble with boot my AM3359.

I have my custom board. I can perform booting via UART, SPL and U-Boot booting very well. When I insert microSD card, I can find it from u-boot. But if I want to boot board from microSD, it doesn't work as it should - nothing happends. I format card as FAT32 FS and copy MLO and u-boot.bin to it, and I set boot pins in 10111b state.

That's what confuses me: when I use create-sdcard.sh script, it doesn't find ane card, because my card represented in /proc/partitions as:

179 0 1954816 mmcblk0
179 1 1953792 mmcblk0p1

Сould this be the cause of problems?

Thanks!

over 12 years ago

0 Miroslav Kiradzhiyski XID over 12 years ago

TI__Mastermind 25235 points

Hi,

K Y said:
179 0 1954816 mmcblk0
179 1 1953792 mmcblk0p1

This is not right. Your SD card seems to be partitioned incorrectly. It has only one partition.

Please follow the instructions on this page to create your SD card.

Best regards,
Miroslav

0 K Y over 12 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 315 points

I have tried to follow instructions, on that you refer. But script cannot find sdb, because my microSD in /proc/partitions file referred as mmcblk...

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to K Y

TI__Mastermind 25235 points

Hi,

Is your SD card reader inbuilt? Usually on Ubuntu systems SD cards are detected as /dev/sdb; /dev/sdc... Well, in that case, please try the attached create-sdcard-2.sh script. I don't guarantee it will run out of the box so please compare the old one with the new one, so that you may understand the differences.

7024.create-sdcard-2.tar

Best regards,
Miroslav

0 K Y over 12 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 315 points

Yes, my card reader is inbuilt. May be problem is in it.

I will try run your script on the evening (UTC +4:00 :)) and write about results.

0 Miroslav Kiradzhiyski XID over 12 years ago in reply to K Y

TI__Mastermind 25235 points

Hi,

No, your card reader being inbuilt is not a problem. The problem here is that inbuilt card readers detect SD cards as "mmcblk" devices, while external card readers detect them as "sdb", "sdc", etc. The create-sdcard.sh script obviously didn't have inbuilt card readers in mind when it was developed and it is always looking for "sd." devices. I hope my modifications will help you.

Best regards,
Miroslav

0 K Y over 12 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 315 points

I hope too. I'll answer anyway. If the script does not work, then I'll use an external cardreader.

Thank you!

0 K Y over 12 years ago in reply to Miroslav Kiradzhiyski XID

Intellectual 315 points

Yes. It works! Thank you!

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Boot from microSD