AM335X booting issue

lofna kumari

Expert 2785 points

Hi,

I am using AM335X processor and trying to boot my bootloader, It stuck at the below:

--------------------------------------------------------------------------------------------

CCCCCCCC

U-Boot SPL 2011.09 (Apr 08 2012 - 18:29:14)

Texas Instruments Revision detection unimplemented

Incorrect magic number in EEPROM

read_eeprom() failure

OMAP SD/MMC: 0

reading u-boot.img

U-Boot 2013.10-g78d8ebd (Mar 30 2014 - 20:46:34)

I2C: ready

DRAM: 512 MiB

NAND: 1024 MiB

MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1

*** Warning - bad CRC, using default environment

data abort

MAYBE you should read doc/README.arm-unaligned-accesses

pc : [<9f77d93c>] lr : [<9f77d42c>]

sp : 9f32de50 ip : 9f371a84 fp : 80814cd8

r10: 9f79fd34 r9 : 9f32df38 r8 : 9f370e74

r7 : 47401000 r6 : 9f79fcec r5 : 47401000 r4 : 9f370c88

r3 : 9f77d91c r2 : 47401400 r1 : 00000010 r0 : 9f370c88

Flags: NzCv IRQs off FIQs on Mode SVC_32

Resetting CPU ...

resetting ...

CCCCCCCC

U-Boot SPL 2011.09 (Apr 08 2012 - 18:29:14)

Texas Instruments Revision detection unimplemented

Incorrect magic number in EEPROM

read_eeprom() failure

OMAP SD/MMC: 0

reading u-boot.img

U-Boot 2013.10-g78d8ebd (Mar 30 2014 - 20:46:34)

I2C: ready

DRAM: 512 MiB

NAND: 1024 MiB

MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1

*** Warning - bad CRC, using default environment

data abort

MAYBE you should read doc/README.arm-unaligned-accesses

pc : [<9f77d93c>] lr : [<9f77d42c>]

sp : 9f32de50 ip : 9f371a84 fp : 80814cd8

r10: 9f79fd34 r9 : 9f32df38 r8 : 9f370e74

r7 : 47401000 r6 : 9f79fcec r5 : 47401000 r4 : 9f370c88

r3 : 9f77d91c r2 : 47401400 r1 : 00000010 r0 : 9f370c88

Flags: NzCv IRQs off FIQs on Mode SVC_32

Resetting CPU ...

resetting ...

--------------------------------------------------------------------------------------------

Please do the needful.

Thanks,

Lofna

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi Lofna,

Have you gone through the DDR tuning procedures as described in the following wikis:

http://processors.wiki.ti.com/index.php/AM335x_EMIF_Configuration_tips

http://processors.wiki.ti.com/index.php/AM335x_DDR_PHY_register_configuration_for_DDR3

0 lofna kumari over 9 years ago in reply to Biser Gatchev-XID

Expert 2785 points

Hi Biser,

Thanks for your response.

The timings are ok, i am using DDR2 (kept 256MB+256MB = 512MB) in our design. When the EVM kit comes, it shows 512MB, after that i am not seeing any 512MB using pre-built images under psp 5,6.

when i tried to boot the psp7 prebuilt bootlader images, it recognized 512MB and NAND proper, but my CPU is resetting in our customized design and AM335X EVM as well.

Please let us know the changes required under bootlader.

Thanks,

Lofna

0 Yordan Kovachev over 9 years ago

TI__Guru**** 161600 points

Hi,

Could you please share which SDK are you trying to use?

A couple of things to check:

1. I find it strange that you use different versions of SPL & U-boot :

lofna kumari said:
U-Boot SPL 2011.09 (Apr 08 2012 - 18:29:14)

lofna kumari said:
U-Boot 2013.10-g78d8ebd (Mar 30 2014 - 20:46:34)

For SDK6.0 the u-boot version for AM335x devices should be: 2013.01

For example on my AM335x starter kit (using SDK7.0), x-loader & U-boot are:

U-Boot SPL 2013.10-00189-g78d8ebd-dirty (Sep 23 2014 - 14:21:42)

U-Boot 2013.10-00189-g78d8ebd-dirty (Sep 23 2014 - 14:21:42)

2. Another thing worth checking is the Incorrect Magic Number error: "Incorrect magic number in EEPROM"

Refer to the following article, in order to deal with this problem: http://processors.wiki.ti.com/index.php/AM335x_Starter_Kit_ID_Memory_Programming

You can also hardcode the ID or remove the ID check from u-boot sources, as described here:

http://e2e.ti.com/support/arm/sitara_arm/f/791/t/297989

http://e2e.ti.com/support/arm/sitara_arm/f/791/t/308033

Best Regards,

Yordan

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AM335X booting issue