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关于cortex-a7 amp模式运行

大家好,我的应用场景为:cortex-a7 4核,希望4个核独立运行,即以AMP方式运行。
但Cortex-A7 MPCore Technical Reference Manual(Revision: r0p5 )
4.3.31 Auxiliary Control Register节明确 ACTLR.SMP
SMP Enables coherent requests to the processor:
0 Disables coherent requests to the processor. This is the reset value.
1 Enables coherent requests to the processor.
When coherent requests are disabled:
• loads to cacheable memory are not cached by the processor.
这意味着,如果4个core如果在amp模式下不能使用cache,系统性能受到极大影响,实测的确如此。
cortex-a7 mpcore压根不支持amp模式吗?
不知哪位专家有好的解决办法?