[U-Boot-Users] MPC83xx data cache lock?
All,
MPC83xx data cache locked all ways in u-boot. This means data cache looks like cache-inhibit. when kernel run at this u-boot, kernel don't unlock data cache, so the data cache actually run at inhibited state. I suggest we need unlock data cache after relocate_code in start.S file.
If unlock data cache in start.S file, we need change everything, such as BATs settings and DDR ECC test code. I have found some bugs in ECC test code.
Regards, Dave
In message 9FCDBA58F226D911B202000BDBAD4673026FD90F@zch01exm40.ap.freescale.net you wrote:
MPC83xx data cache locked all ways in u-boot. This means data cache looks like cache-inhibit. when kernel run at this u-boot, kernel don't unlock data cache, so the data cache actually run at inhibited state. I suggest we need unlock data cache after re locate_code in start.S file.
Can you please retrict your line legth to the usual 70 characters or so? Thanks.
If unlock data cache in start.S file, we need change everything, such as BATs settings and DDR ECC test code. I have found some bugs in ECC test code.
Ummm.... Can you please be a bit more specific? I'm definitely interested in details. Did you find any way to improve the [non-existent] write performance?
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...
And please, don't post HTML, especially not encoded as base64 which is a double PITA.
Best regards,
Wolfgang Denk
participants (2)
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Liu Dave-r63238 -
Wolfgang Denk