A linux-based multi-hardware adaptation method

Abstract

The invention discloses a Linux-based multi-hardware adaptation method, which relates to the technical field of automotive electronics. In the Bootloader stage, the vehicle entertainment SOC processor side of the vehicle entertainment system can obtain the hardware information of the vehicle MCU processor terminal, and can according to different modify the parameters inside the kernel to achieve the function of dynamically adapting the hardware. The vehicle entertainment SOC processor communicates with the vehicle MCU processor through the IPCL in the Bootloader stage to obtain the hardware information of different models of the vehicle MCU processor end. In the Bootloader stage, the FDT of the device tree is modified according to different models. Finally, the Linux Kernel driver realizes dynamic adaptation according to different hardware parameters, which can effectively meet the requirements for multi-hardware adaptation. It is convenient, flexible, and non-inductive. The probability of communication errors is reduced, and the configuration of the communication protocol is simple, it can communicate in different startup stages, and has good compatibility with different platforms.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a Linux-based multi-hardware adaptation method. Background technique [0002] With the continuous development of the automobile industry, the same car model can be divided into multiple versions according to different configurations. The in-vehicle entertainment system on different versions needs to make corresponding different device identification and driver loading according to different hardware devices. There are currently two main technologies to achieve different hardware adaptations. The first is to make differences according to different models during the coding stage. For example, the Android system can use the lunch command to select different platform compilation options, and then use the make command Execute the compilation command, so that the compiled code can already adapt to the current platform device. The second is to use the same code to obtain ...

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Problems solved by technology

[0002] With the continuous development of the automobile industry, the same car model can be divided into multiple versions according to different configurations. Different versions of the car entertainment system need to make corresponding different device identification and driver loading according to different hardware devices. There are currently two main technologies to achieve different hardware adaptations. The first is to make differences according to different models during the coding stage. For example, the Android system can use the lunch command to select different platform compilation options, and then use the make command Execute the compilation command, so that the compiled code can already adapt to the current platform device. The second is to use the same code to obtain different hardware information during the startup phase, and then dynamically configure the hardware through the code. For example, The hardware parameters can be written into the memory, and the bootloader stage reads the parameter information in the memory, and then modifies the bootargs parameters, and uses the bootargs to pass different parameters to the kernel. The kernel loads different devices through different bootargs parameters, but the first method is not flexible enough. It can only be distinguished by compiling different codes. It cannot dynamically adapt the hardware, and cannot meet the requirements of software and hardware platforms. The second solution can be dynamically adapted by using code, but the method of passing parameters through bootargs is compared. Outdated, and there are restrictions on the modification of bootargs parameters. It can only adapt to parameters such as memory size and baud rate, so it cannot better meet the requirements of dynamic adaptation.

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