2. Development Environment¶

2.1. current¶

thiscopyfiledescriptionLinuxDevelopment Environment. LinuxDevelopment Environmentset upU-boot, Linux Kernel, Root File System(rootfs)andinkernelandRoot File Systemburning, andcreatenetworkDevelopment Environmentandboot Linux development.

This document helps users quickly set up a Linux environment and port their applications to the Linux operating system.

2.2. How to Build the Kernel¶

To build the SDK in the Ubuntu environment on the host, install the following tools.

请参阅CV184X SDK 编译使用手册 – Chapter 2 建构CVITEK软件编译环境

Set the environment variables (using cv1842hp_wevb_0014a_spinor as an example).

$ source build/envsetup_soc.sh
 -------------------------------------------------------------------------------------------------------
   Usage:
   (1) menuconfig - Use menu to configure your board.
       ex: $ menuconfig

   (2) defconfig $CHIP_ARCH - List EVB boards($BOARD) by CHIP_ARCH.
      ** cv184x ** -> ['cv184x', 'cv1841c', 'cv1842cp', 'cv1842hp', 'cv1843hp']
       ex: $ defconfig cv184x

  (3) defconfig $BOARD - Choose EVB board settings.
       ex: $ defconfig cv1842hp_wevb_0014a_spinor
       ex: $ defconfig cv1842cp_wevb_0015a_spinand

Select EVB cv1842hp_wevb_0014a_spinor.

$ defconfig cv1842hp_wevb_0014a_spinor
====== Environment Variables =======
PROJECT: cv1842hp_wevb_0014a_spinor, DDR_CFG=ddr3_2133_x16
CHIP_ARCH: CV184X, DEBUG=0
SDK VERSION: musl_arm, RPC=0
ATF options: ATF_KEY_SEL=default, BL32=1
Linux source folder:linux_5.10, Uboot source folder: u-boot-2021.10
ENABLE_DUAL_OS: y
CROSS_COMPILE_PREFIX: arm-none-linux-musleabihf-
ENABLE_BOOTLOGO: 0
Flash layout xml: build/boards/cv184x/cv1842hp_wevb_0014a_spinor/partition/partition_spinor.xml
Sensor tuning bin: cvsens_cv2003
Output path: install/soc_cv1842hp_wevb_0014a_spinor

Build the Linux kernel.

$ build_kernel
 Run build_kernel() function
 ......
 [TARGET] kernel-dts
 ......
 [TARGET] kernel-build
 ......

Generate the programming files boot.{spinor, spinand, emmc}.

$ ls install/soc_cv1842hp_wevb_0014a_spinor/boot.spinor
 install/soc_cv1842hp_wevb_0014a_spinor/boot.spinor