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TMS320F28388D: DSP使用EMIF与SDRAM通信,定义一个大的数值,上电进入main函数时间变长

Part Number: TMS320F28388D

如官方例程那样,我在SDRAM里定义了一个256M的数组,DSP上电之后总是将这个数组初始化为零,这就需要很长一段时间才能进入main函数,怎么才能不让他初始化?

这是按照官方例程定义的数组 :  __attribute__((far)) volatile uint32_t extSDRAMBuf[134217728];

这是官方的CMD字段: 

emif_cs0_nonfar : > EMIF1_CS0_CS2n
.farbss : > EMIF1_CS0n
// .SDRAM : > EMIF1_CS0n
.farconst : > EMIF1_CS0n
.em1_cs0 : > EMIF1_CS0n