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Linux/AM3358: SPL data abort exception

Part Number: AM3358


Tool/software: Linux

I encountered a data abort exception while debugging the SPL source code with JTAG simulation. And the specific code causing the exception is : gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE, which at  the position of  "dram_init_banksize" function(  /common/spl/spl.c/board_init_r() ).

In addition, our hardware design has a fault that a  pin J3(DDR_VTP) of AM3358 dose not connect to pull-down resistor, so dose it has any probability to cause this data abort exception? 

Hope to get the response as soon as possible, Thanks.