在XUPV5-LX110T上设置缓存是否应该使用MPMC

只需在Base System Builder中包含DDR外设即可。
然后，您可以从SDK中的链接描述文件更改应用程序的位置，堆和堆栈。
但请记住，如果您将应用程序放入片上BlockRam之外的其他任何东西，则需要通过SDK手动下载应用程序，或将其放入FLASH，并在BRAM中使用引导加载程序。
如果您只需要检查数据高速缓存的性能优势，最简单的解决方案可能是将堆重定位到DDR内存，将应用程序保留在BlockRam中。
每当您使用new或malloc创建变量时，它将被放置在堆上 - 您应该能够看到具有和不具有缓存的系统之间的显着性能差异。



以下为原文

Just include the DDR peripheral in the Base System Builder. You can then change the location of your application, the heap and stacks from the linker script in the SDK.
 
Remember though, that if you put the application into anything else than on-chip BlockRam, you will need to manually download the application through the SDK, or put it into FLASH, and have a bootloader in BRAM.
 
If you just need to check the performance benefit of a data cache though,  the easiest solution is probably to just relocate the heap to the DDR memory, keeping the application in BlockRam. Whenever you then create a variable using new or malloc, it will be placed on the heap - and you should be able to see a significant performance difference between systems with and without cache.

谢谢你的建议。
我在使用BSB时感到困惑。
我附上了两个屏幕截图：
- 第一个显示我选择在我的系统中出现的组件。
- 第二个显示我被迫使用DDR作为缓存。
我不能让程序驻留在DDR中，然后是onchip BRAM中的缓存吗？
至于你的建议，我在哪里可以将堆重新定位到DDR？
我需要遵循哪些步骤？



以下为原文

 
Thank you for the advice. I'm getting confused when using the BSB. I've attached two screen shots:
 
-The first one shows what components I selected to be present in my system.
-The second one shows that I'm forced to use DDR as the cache memory. 
 
Can't I just have the program residing in DDR and then the cache in the onchip BRAM?
 
As for your suggestion, where can I relocate the heap to the DDR? What steps do I need to follow?
 

尝试阅读图片中的文字。
您在缓存屏幕中选择的内存是生成chache的内存 - 而不是缓存所在的位置。



以下为原文

Try reading the text in the picture. The memory you select in the cache screen is the memory to generate chache for - not where the cache will be located.

好的，现在一切都很有意义。
你能告诉我更多关于如何将堆移动到DDR的信息吗？
问候，
瓦埃勒



以下为原文

OK great everything makes sense now. Can you please tell me more about how to move the heap to the DDR?
 
Regards,
 
Wael

在SDK中，在Project Explorer中右键单击您的项目，然后选择“Generate Linker Script”。
从这里你只需将“堆放和堆叠”改为DDR ram，并给它们一些尺寸（每个几千字节应该足以进行简单的测试）。



以下为原文

In the SDK, right-click your project in the Project Explorer and select "Generate Linker Script". From here you just change the "Place Heap and Stack in" to the DDR ram, and give them both some size (a few kilobytes for each should be more than enough for a simple test).

None


以下为原文

Hi,
 
To move the sections of application to DDR.
 
http://www.xilinx.com/support/documentation/sw_manuals/xilinx11/SDK_doc/reference/sdk_u_linker_script.htm
 
Thnx
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该截图来自SDK的第11版 - 它在v12中略有变化 - 尽管原理当然是相同的;）



以下为原文

That screenshot is from v11 of the SDK though - it has changed slightly in v12 - although the principles are the same of course ;)

你好-
我们已经将MPMC核心添加到我们正在尝试构建的系统中。
问题是，一旦我们尝试配置控制器，我们就无法在下拉列表中找到我们的内存部分（MT4HTF3264HY-667F1）。
有关如何添加配置文件的任何想法？
我们正在使用EDK版本。
12.2
谢谢



以下为原文

Hello-
 
We've added the MPMC core to the system we are trying to build. The problem is that we cannot find our memory part (MT4HTF3264HY-667F1) in the dropdown list once we try to configure the controller. Any idea on how to add the configuration file? We are using EDK ver. 12.2
 
Thanks

嗨，
如果您没有看到正在使用的内存部件，请按照此过程操作。
http://www.xilinx.com/support/answers/29641.htm
日Thnx
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以下为原文

Hi,
 
If you dont see the memory part you are using, follow this procedure.
 
http://www.xilinx.com/support/answers/29641.htm
 
Thnx
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