Merge pull request #12 from OpenXiangShan/update-readme
README: add illustration for building flash images
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README.md
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README.md
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# The Abstract Machine (AM)
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## How to build benchmark flash image
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- clone `nexus-am` from github:
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``` shell
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git clone git@github.com:OpenXiangShan/nexus-am.git
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```
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- enter benchmark directory (using `apps/coremark` as an example):
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```
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cd /apps/coremark
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make ARCH=riscv64-xs-flash
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cd ./build
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ls
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```
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- you will find a ".bin" file, this is a benchmark image in flash
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## How to use the prepared flash image to do simulation
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- assuming you have a `XiangShan` repo, the commit ID should be newer than 188f739de96af363761c0f2b80b95b70ad01e0fc
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- make `emu` build
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- use `-F` to load the image in flash:
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```
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./emu -F $AM_HOME//apps/coremark/build/coremark-riscv64-xs-flash.bin -i ../ready-to-run/coremark-2-iteration.bin 2>debug.log
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```
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> NOTE: use `-i` to specify the initial ram image, or a ramdom file if you do not care.
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