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C6678如何在PCIe BOOT时设置BAR SIZE?



大家好!

现在遇到一个问题不知如何解决,希望大家帮帮忙

芯片C6678,PCIe boot。现在的问题是我要怎么样才能在boot的时候将PCIe 的BAR0---BAR5的大小设置小一点。

根据PCIE启动的配置发现PCIe window size最小都是16MB,16MB,32MB,64MB(即将bar cfg设置为 0b0001)。

而目前我需要在DSP启动时将window size设置为4MB,4MB,8MB,16MB。请问这应该怎么实现啊?