1. Structure

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2. Resource

To support the use of dual NPUs, it is necessary to prepare the system environment and runtime environment of the C3V-W Dual EVB. Currently, two parts of the compressed packages are available:

• system environment：

  View file
  name master_dual_npu_support.tar.gz

• VSI SDK libraries：

  View file
  name galcore_sdk0.tar.gz

  and

  View file
  name galcore_sdk1.tar.gz

2.1. System Environment

The system environment provides compressed packages：master_dual_npu_support.tar.gz. Which is contains two patch files. This patch is based on the following version:

https://github.com/sunplus-plus1/Q654.git master: a8e7251a4bc175994ea31a968e1e35cf0b0cd8e8

• linux/kernel
  commit f85ca635311c4fdff741ffe7ef87f8a1243144a7 (master)

• boot/xboot
  commit f2f03a8ba9bcfb1b0c1efd4f6e351b8c50641224 (origin/v1.0, master)

Please apply patch modifications based on this version.

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• master_dual_npu_linux.patch: The Linux patch file. The path is as follows: "Q654\linux\kernel".

• master_dual_npu_xboot.patch: the xboot folder patch file. The path is as follows: "Q654\boot\xboot".

2.2.

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SDK Libraries

The VSI SDK Libraries have been included in the compressed files:

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When running the app, it is necessary to specify the link library path: LD_LIBRARY_PATH

3. Environment Preparation

3.

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1 System

Please patch file modifications into the Xboot and Linux codes, and Compile the working environments for the master and slave separately. Reburn master and slave ISP_SD_BOOOT.img to micro SD card.

• Execute the following command in the master Linux system:

cat /sys/kernel/debug/clk/clk_summary | grep "NPU_SLAVE"

When you see the following results, it indicates that the modifications to the Master kernel have taken effect.

NPU_SLAVE                      0        0        0   500000000          0     0  50000

• Please confirm that the Slave serial port prints the following log, which indicates that Slave CPU has been initialized

---- CPIO-R slave mode Begin ----

VCO: 4.0G, PLL: 1.0G
PHY status change: 0x08000001
PHY status check Passed
CPIO Initial Finished
PHY Mode: 0x0000008D
Timer start: 0x00000000
Timer End: 0x00000009
gic init ...

3.2 NPU Modules Compile

NPU Version choice v6.4.15.9. Compile master/slave modules

make kconfig
> Device Drivers 
  > Multimedia support 
    > Media drivers 
      > ML Inference Processor VIP9000_NPU
        > NPU Core choice

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galcore1.ko：slave NPU module；

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3.3 Insmod Modules

Install the model using the following parameters:

insmod ./galcore0.ko powerManagement=1 mmuPageTablePool=0 major=199
insmod ./galcore1.ko powerManagement=1 mmuPageTablePool=0 major=200

Please change the permissions of the device node:

sudo chmod 666 /dev/galcore
sudo chmod 666 /dev/galcore1

After successful installation, you can see it in the device list /dev/galcore and /dev/galcore1.

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crw-rw-rw- 1 root root 199, 0 Nov 21 21:11 /dev/galcore
crw-rw-rw- 1 root root 200, 0 Nov 21 21:11 /dev/galcore1

3.4. Run Process

Executing the required processes in the script is recommended. Different SDK paths can be specified in the script file.

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