[U-Boot] u-boot hangs on soft reboot

[Muzammal Ahmed]

Hi there,
I'm having this subtle issue where if I put my ARM device (U-boot + Linux) under soft reboot cycle (stress test), it fails after 100+ cycles. The serial output I capture in failed scenario is:
...
g_txrx_mode=1
g_profileid=1
id=0x1F11 board_type=0x0004 HAS_POE_SUPPORT=1
Not POE
read_rbf_header_from_ext4 - filename = e30.core.rbf filesize = 7317252
cff_from_mmc_ext4:writing e30.core.rbf length 13 num_files 0
Full Configuration Succeeded.
crestron_load_rbf: use core e30.core.rbf length 13 rval 1
Booting from primary
Writing to MMC(0)... done
dram_init: id 1f11 (id & 0x0001) 1 has_dsp/has_dante0
DDRCAL: Success
INFO  : Skip relocation as SDRAM is non secure memory
Reserving 2048 Bytes for IRQ stack at: ffe2f708
DRAM  : 512 MiB

On a successful reboot, next printed lines are:
WARNING: Caches not enabled
MMC:   In:    serial
Out:   serial
Err:   serial

it seems it failed between 'skip_relocation()' and 'enable_caches()'. but why after 100+ attempts? Could it be memory issue? Memory timing issue? And how can I debug it?


Regards,


Muzammal Ahmed | Firmware Engineer
Phone: 800-237-2041
Ext: 12505
Email: mahmed at crestron.com

Crestron Electronics, Inc.
22 Link Drive, Rockleigh, NJ, 07647

[www.crestron.com]<http://www.crestron.com>




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