build-linux-bottom

At this step, you can modify default configuration using the menuconfig

• $ make ARCH=arm menuconfig

  Now, in the menuconfig dialog, you can easily add or remove some features. Once done, Move to <Exit> with arrows and press this button hitting the Enter key to exit from this screen.

  Build the Linux kernel image, before you build you need set up the cross compile toolchain, check this section.

  $ make ARCH=arm
  
  [..]
  
    Kernel: arch/arm/boot/Image is ready
    Kernel: arch/arm/boot/zImage is ready

  Now you have an usable compressed kernel image zImage.

  If you need an uImage you can run this additional step:

  make ARCH=arm uImage LOADADDR=0x20008000
  
  [..]
  
  Kernel: arch/arm/boot/Image is ready
  Kernel: arch/arm/boot/zImage is ready
  UIMAGE  arch/arm/boot/uImage
  Image Name:   Linux-6.12.22-linux4microchip-20
  Created:      Thu May 22 18:05:21 2025
  Image Type:   ARM Linux Kernel Image (uncompressed)
  Data Size:    5688984 Bytes = 5555.65 KiB = 5.43 MiB
  Load Address: 20008000
  Entry Point:  20008000
  Kernel: arch/arm/boot/uImage is ready
  

  make ARCH=arm dtbs
  
  [..]
  
    DTC     arch/arm/boot/dts/microchip/at91-sama5d27_som1_ek.dtb
    DTC     arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dtb
    DTC     arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dtb
    DTC     arch/arm/boot/dts/microchip/at91-sama5d2_icp.dtb
    DTC     arch/arm/boot/dts/microchip/at91-sama5d3_eds.dtb
    DTC     arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dtb
    DTC     arch/arm/boot/dts/microchip/at91-sama7g54_curiosity.dtb
    DTC     arch/arm/boot/dts/microchip/at91-sama7g5ek.dtb
  
  [..]

  If the building process is successful, the final images can be found under arch/arm/boot/ directory.