[GitHub] [incubator-nuttx] HidenoriMatsubayashi opened a new pull request, #7304: arm64: add Cortex-A57 and Cortex-A72 configurations

[GitBox]

HidenoriMatsubayashi opened a new pull request, #7304:
URL: https://github.com/apache/incubator-nuttx/pull/7304

   ## Summary
   This change adds the followings:
   - Rename the board configuration name from `qemu-a53` `to qemu-v8a`.
   - Add the configurations for Cortex-A57 and Cortex-A72.
   
   Basically, there should be no difference we must address by software between 
`cortex-a53`, `cortex-a57`, and `cortex-a72`.
   
   <img width="1685" alt="スクリーンショット 2022-10-13 22 51 06" 
src="https://user-images.githubusercontent.com/62131389/195617292-c84fcb6d-1632-475e-8384-74971e18e124.png";>
   
   Reference:
   [Arm Cortex-A Processor Comparison 
Table](https://developer.arm.com/-/media/Arm%20Developer%20Community/PDF/Cortex-A%20R%20M%20datasheets/Arm%20Cortex-A%20Comparison%20Table_v4.ashx)
   
   ## Impact
   None
   
   ## Testing
   Confirmed that OS boots with the following commands/configuration:
   
   ```shell
   qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic -machine 
virt,virtualization=on,gic-version=3 \
     -net none -chardev stdio,id=con,mux=on -serial chardev:con -mon 
chardev=con,mode=readline -kernel ./nuttx
   ```
   
   ```shell
   qemu-system-aarch64 -cpu cortex-a57 -smp 4 -nographic -machine 
virt,virtualization=on,gic-version=3 \
     -net none -chardev stdio,id=con,mux=on -serial chardev:con -mon 
chardev=con,mode=readline -kernel ./nuttx
   ```
   
   ```shell
   qemu-system-aarch64 -cpu cortex-a72 -smp 4 -nographic -machine 
virt,virtualization=on,gic-version=3 \
     -net none -chardev stdio,id=con,mux=on -serial chardev:con -mon 
chardev=con,mode=readline -kernel ./nuttx
   ```
   
   Signed-off-by: Hidenori Matsubayashi <hidenori.matsubaya...@gmail.com>


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