[question] Since nuttx and uboot have the same .config configuration and macros, do they also overlap in functionality?

[zyy37]

I use nuttx to build for a certain development board, and use uboot (which is a BootLoader tool) to build for the same development board. Both will generate a .config configuration file with the same name, which also contains macros with similar names about CPU, SPI, and Device. Since nuttx and uboot have the same .config configuration and macros, do they also overlap in functionality? Could you explain it in detail? Thanks. for nuttx:

~/nuttxspace/nuttx$ tools/configure.sh -l stm32f769i-disco:nsh

for uboot:

~/u-boot$ make stm32f769-disco_defconfig

[acassis]

@zyy37 NuttX uses similar Kconfig frontend like U-Boot and Linux, so they all save a .config. Aside from that they don't overlap in functionality. Although NuttX can do bring-up HW initialization like U-Boot, I think U-Boot normally is used for high-end processors. For low-end MCUs, the comparison could be done with MCUboot. But in this case the MCUboot purpose is mostly to do secure boot and OTA update.

[acassis]

@zyy37 may I close this question? Since it is not actually an issue, but a curiosity.

[zyy37]

Okay, thank you