CODEWITHSUNDEEP
u-bootkbuild
SRK
SRK

Reputation: 328

U-boot 2018.09 : Getting list of compiled files and configuration options for SPL, U-boot

I am trying to study the execution flow of SPL and U-boot proper specifically for BeagleBone Black(am335x_boneblack_defconfig) by browsing through the source code.

  1. How can i generate the list of source files which gets compiled into U-boot proper(u-boot.img) and SPL(MLO) binaries? If i get a list of files which gets compiled for SPL and U-boot separately, then i can use cscope to browse through the code. ( make cscope just generates the list of files which gets compiled for U-boot proper, and it includes many files which are not compiled into binary )

  2. How can i generate the configuration macros(CONFIG_*) which are used during build process of U-boot and SPL binaries? Is include/generated/autoconf.h containing the macros used for U-boot.

  3. What does u-boot.cfg and spl/u-boot.cfg contain? Are these the configuration macros used for building U-boot and SPL respectively?

Upvotes: 1

Views: 633

Answers (1)

Shaik Saifulla
Shaik Saifulla

Reputation: 21

The files that are compiled can be seen while u-boot sources are getting compiled, as verbose, when you perform the following.

  1. make ARCH=arm CROSS_COMPILE=${CC} distclean
  2. make ARCH=arm CROSS_COMPILE=${CC} am335x_evm_defconfig
  3. make ARCH=arm CROSS_COMPILE=${CC}

Upvotes: 2

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