Copy the preceding code from the **kernel/linux/linux-4.19/drivers/staging** directory of OpenHarmony to **out/KERNEL\_OBJ/kernel/src\_tmp/linux-rpi3b/drivers/staging**.
Copy the preceding code from the **kernel/linux/linux-4.19/drivers/staging** directory of OpenHarmony to**out/KERNEL\_OBJ/kernel/src\_tmp/linux-rpi3b/drivers/staging**.
Add the following code to the third-party kernel file **Kconfig** in the **drivers/staging** directory:
Add the following code to the third-party kernel file **Kconfig** in the **drivers/staging** directory:
```
source "drivers/staging/hilog/Kconfig"
source "drivers/staging/hievent/Kconfig"
```
Enable the CONFIG macros **CONFIG\_HILOG** and **CONFIG\_HIEVENT** in the kernel **config** section.
Add the following code to the third-party kernel file **Makefile** in the **drivers/staging** directory:
For details about how to use the logs, see [Hilog\_lite](https://gitee.com/openharmony/hiviewdfx_hilog_lite/blob/master/README.md).
```
obj-$(CONFIG_HILOG) += hilog/
obj-$(CONFIG_HIEVENT) += hievent/
```
Enable the CONFIG macros **CONFIG\_HILOG** and **CONFIG\_HIEVENT** in the kernel **config** section.
For details about how to use the logs, see [Hilog\_lite](https://gitee.com/openharmony/hiviewdfx_hilog_lite/blob/master/README.md).
### Porting the HDF Feature<a name="section12971205681710"></a>
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@@ -124,9 +131,9 @@ For details about how to use the logs, see [Hilog\_lite](https://gitee.com/open
Run the shell script to apply HDF patches.
1. Set the three variables in the **patch\_hdf.sh** script.
2. Obtain the **patch\_hdf.sh** script.
3. Run the **patch\_hdf.sh** script to pass the three variables in sequence.
1. Set the three variables in the **patch\_hdf.sh** script.
2. Obtain the **patch\_hdf.sh** script.
3. Run the **patch\_hdf.sh** script to pass the three variables in sequence.
Run the following command:
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@@ -144,9 +151,9 @@ For details about how to use the logs, see [Hilog\_lite](https://gitee.com/open
Configure basic HDF settings. If other functions are required, enable the corresponding driver switch by using **menuconfig**.
Configure basic HDF settings. If other functions are required, enable the corresponding driver switch by using **menuconfig**.
After HDF patches are installed, the HDF function is disabled by default. To enable the HDF function, perform the following settings:
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@@ -161,7 +168,7 @@ For details about how to use the logs, see [Hilog\_lite](https://gitee.com/open
CONFIG_DRIVERS_HDF_TEST=y
```
Alternatively, run the following command to enable the HDF configuration on the **menuconfig** page:
Alternatively, run the following command to enable the HDF configuration on the **menuconfig** page:
```
# Generate the .config file.
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@@ -173,7 +180,7 @@ For details about how to use the logs, see [Hilog\_lite](https://gitee.com/open
# [*] HDF driver framework support --->
```
The configuration \(in **Device Drivers** \> **HDF driver framework support**\) is as follows:
The configuration \(in **Device Drivers** \> **HDF driver framework support**\) is as follows:
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@@ -193,16 +200,16 @@ The HDF test cases are used to verify basic functions of the HDF framework and p
**Prerequisites**
- In **menuconfig**, **CONFIG\_DRIVERS\_HDF\_TEST** is set to **y**.
- In **menuconfig**, **CONFIG\_DRIVERS\_HDF\_TEST** is set to**y**.
- The standard Hi3516D V300 kernel is built completely.
**Test Case Build and Test Method**
Use the [hdc\_std](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-toolchain-hdc-guide.md) tool to push the test case execution file to the device and execute the test cases. The procedure is as follows:
Use the [hdc\_std](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-toolchain-hdc-guide.md) tool to push the test case execution file to the device and execute the test cases. The procedure is as follows:
1. Build the HDF test cases.
2. Use the **hdc\_std** tool to push the test case execution file to the device.
3. Go to the **data/test** directory of the device and execute the test file.
2. Use the **hdc\_std** tool to push the test case execution file to the device.
3. Go to the **data/test** directory of the device and execute the test file.
The procedure is as follows:
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@@ -218,9 +225,9 @@ The procedure is as follows:
2. Copy the test files to the target device \(Raspberry Pi in this example\).
Method 1: Use the [hdc\_std](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-toolchain-hdc-guide.md) tool.
Method 1: Use the [hdc\_std](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-toolchain-hdc-guide.md) tool.
1. Create the **data/test** directory in Raspberry Pi.
1. Create the **data/test** directory in Raspberry Pi.
```
mkdir -p data/test
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@@ -238,8 +245,8 @@ The procedure is as follows:
Method 2: Copy the test files to Raspberry Pi using its memory card.
1. Remove the serial port and USB cable of Raspberry Pi from the PC, and remove its memory card. The **zImage** file in the memory card will be replaced. Back it up in advance.
2. Insert the memory card into the port of the PC used for porting, download the **zImage** file and the **test/** folder to the PC, and then copy them to the root directory of the memory card.
1. Remove the serial port and USB cable of Raspberry Pi from the PC, and remove its memory card. The **zImage** file in the memory card will be replaced. Back it up in advance.
2. Insert the memory card into the port of the PC used for porting, download the **zImage** file and the **test/** folder to the PC, and then copy them to the root directory of the memory card.
3. Insert the memory card into Raspberry Pi.
```
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@@ -255,7 +262,7 @@ The procedure is as follows:
```
3. Perform the test.
1. Go to the **data/test** directory.
1. Go to the **data/test** directory.
```
cd /data/test
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@@ -276,7 +283,7 @@ The procedure is as follows:
./SbufTest
```
4. If **PASSED** is displayed for all test items, HDF is functioning.
4. If **PASSED** is displayed for all test items, HDF is functioning.
