L2 Cache enable on i.MX5

[Robert Daniels]

>> I recently discovered an issue with an i.MX53 based product where we had
>> an older version of Das U-Boot which disabled the L2 cache on startup but
>> in a later version would re-enable it once the L2 cache was configured.

> The kernel is supposed to be booted with caches disabled, and in particular,
> the L2 cache disabled during the decompressor run.

> If the L2 cache is configured, it will enable it during it's boot sequence.

I see - so the boot loader is not supposed to enable the L2 cache and it should
not be enabled until after the decompressor runs.

In that case, where should the kernel be enabling the L2 cache? I'm using the
3.14 kernel for this i.MX53 product and the L2 cache is definitely not enabled.

I see that there is a imx_init_l2cache defined which is being called by the imx6
and imx35 platform code but it is not being called for the i.mx5... should it?

Thanks,

Robert Daniels

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