Cannot able to boot from sd card in P1020 rdb

[sourabhdas]

Hi, I am using P1020 rdb for my project. I want to boot my RAM based u-boot image from sd card.

I have followed this freescale guide to prepare my sdcard :

Getting Started Guide for P1020/P1011

As per as the guide, the sd card preparation for the RAM-based u-boot is to be done in the board itself. So, I first load the kernel image from NOR. Then I copied the boot_format, config_file and u-boot image to any directory in board.

I run this command : boot_format config_file u-boot.bin -sd /dev/mmcblk0

After which, I got the following :

It is a big endian machine.

Read MBR from SDCard:

0x0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x00a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x00b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x00c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x00d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x00e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x00f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0140: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0150: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0160: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0170: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x0190: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x01a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x01b0: 00 00 00 00 00 00 00 00 0f ca 58 3a 00 00 00 21

0x01c0: 03 00 0b 01 c2 f0 00 08 00 00 00 18 3b 00 00 00

0x01d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x01e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x01f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa

================== MBR ==================

boot_ind                = 0x0

start_head      = 0x21

start_cylesec   = 0x3

part_type       = 0xb

end_head                = 0x1

end_cylsec      = 0xf0c2

rel_sectors     = 0x800

total_sectors   = 0x3b1800

=========================================

It is not a valid MBR.

Segmentation fault

To boot my u-boot from sd card, i change the boot config switches to 001001, and then power ON the board. I am not able to load my u-boot image.

[yipingwang]

Hello Sourabh Das,

You need to specify a device name to "-sd" rather than a partition name, the boot_format command has not been executed successfully. You could refer to System Boot from SD/MMC Card with SDK 1.6 images  for the detailed procedure.

In addition, please let me know you are using P1020RDB-PC or P1020RDB-PD, and which version Linux SDK you are using.

Have a great day,
Yiping

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