OBSOLETE - Add UBOOT_ONLY config property to the default build procedure - will be replaced by another pull request

[mhoffrog]

This config simplifies the U-Boot build only scenario. If this switch is set, then KERNEL_ONLY is implied to "yes". The U-Boot only build also ensures proper host prepare and any other validation, the default build procedure performs.

The motivation is to simplify UBOOT_ONLY building by just one compile parameter / switch, but keeping the default
dependent compile procedures like e.g. host compare and other pre-config validations as is.
This makes it also useful for CICD compile configurations.

Changes

• lib/functions/main/config-prepare.sh:
  • imply to set KERNEL_ONLY=yes, if UBOOT_ONLY is set "yes"
• lib/functions/main/default-build.sh:
  • changed do_default():
    • added appropriateif {U-Boot compiling} else {Kernel and other compiling - original unchanged code} fi

      Note for the code review: The diff of this new if / else branch in do_default() is looking a bit irritating, since it does not reflect that the code in the new else branch was not touched at all rather than just indented by another tab character.

Closes issue #4421

Test

• Tested - see log of bash terminal output (cut in the middle to shorten for the relevant here):

user@HOST:~/Projects/Armbian/build$ ./compile.sh BOARD=cubietruck BRANCH=current RELEASE=focal BUILD_MINIMAL=yes BUILD_DESKTOP=no UBOOT_ONLY=yes KERNEL_CONFIGURE=no COMPRESS_OUTPUTIMAGE=sha,gpg,7z SYNC_CLOCK=no
[ warn ] This script requires root privileges, trying to use sudo 
[ o.k. ] Using config file [ /home/mhoffrog/Projects/Armbian/build/userpatches/config-example.conf ]
[ o.k. ] Command line: setting BOARD to [ cubietruck ]
[ o.k. ] Command line: setting BRANCH to [ current ]
[ o.k. ] Command line: setting RELEASE to [ focal ]
[ o.k. ] Command line: setting BUILD_MINIMAL to [ yes ]
[ o.k. ] Command line: setting BUILD_DESKTOP to [ no ]
[ o.k. ] Command line: setting UBOOT_ONLY to [ yes ]
[ o.k. ] Command line: setting KERNEL_CONFIGURE to [ no ]
[ o.k. ] Command line: setting COMPRESS_OUTPUTIMAGE to [ sha,gpg,7z ]
[ o.k. ] Command line: setting SYNC_CLOCK to [ no ]
[ .... ] Extension being added [ sunxi-tools :: added by functions/cli/cli-entrypoint.sh:105 -> functions/main/config-prepare.sh:140 -> functions/configuration/main-config.sh:174 -> config/sources/families/sun7i.conf:1 -> config/sources/families/include/sunxi_common.inc:1 ]                                                                                                                    
[ o.k. ] Extension manager [ processed 3 Extension Methods calls and 3 Extension Method implementations ]
[ o.k. ] Using user configuration override [ /home/mhoffrog/Projects/Armbian/build/userpatches/lib.config ]
[ o.k. ] Preparing [ host ]
[ o.k. ] Build host OS release [ focal ]
[ .... ] Installing build dependencies 
[ o.k. ] Checking for external GCC compilers 
[ o.k. ] Downloading sources 
[ o.k. ] Checking git sources [ u-boot v2022.07 ]
[ .... ]  Cleaning ....  [ 93 files ]
[ o.k. ] Checking git sources [ linux-mainline/5.15 git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.gitorigin/linux-5.15.y ]                                                                                                                      
[ .... ] Switch v5.15.77 = da3267ca3045f6958b56cbd9d185b68f7e14216d 
[ o.k. ] Checking git sources [ sunxi-tools master ]
[ .... ] Up to date 
[ o.k. ] Cleaning /home/mhoffrog/Projects/Armbian/build/output/debs for [ cubietruck current ]
[ o.k. ] Cleaning [ u-boot/v2022.07 ]
[ o.k. ] Compiling u-boot [ 2022.07 ]
[ o.k. ] Compiler version [ arm-none-linux-gnueabihf-gcc 9.2.1 ]
[ .... ] Checking out to clean sources 
[ o.k. ] Cleaning [ u-boot/v2022.07 ]
[ o.k. ] Started patching process for [ u-boot sunxi-cubietruck-current ]
[ o.k. ] Looking for user patches in [ userpatches/u-boot/u-boot-sunxi ]
[ o.k. ] * [l][c] 0000-sunxi-allwinner-a10-spi-driver.patch 
[ o.k. ] * [l][c] 0001-add-orange-pi-3-lts-support.patch 
[ o.k. ] * [l][c] Bananapro-01-add-hdmi-de-reg_ahci_5v.patch 
[ o.k. ] * [l][c] Bananapro-02-add-AXP209-regulators.patch 
[ o.k. ] * [l][c] Merrii_Hummingbird_A20.patch 
[ o.k. ] * [l][c] add-a20-optional-eMMC.patch 
[ o.k. ] * [l][c] add-a64-olinuxino-emmc-support.patch 
[ o.k. ] * [l][c] add-a64-olinuxino-spl-spi.patch 
[ o.k. ] * [l][c] add-awsom-defconfig.patch 
[ o.k. ] * [l][c] add-emmc_support_to_neo1_and_2.patch 
[ o.k. ] * [l][c] add-h616-THS-workaround.patch 
[ o.k. ] * [l][c] add-nanopi-air-emmc.patch 
[ o.k. ] * [l][c] add-nanopi-duo.patch 
[ o.k. ] * [l][c] add-nanopi-m1-plus2-emmc.patch 
[ o.k. ] * [l][c] add-nanopi-neo-core.patch 
[ o.k. ] * [l][c] add-orangepi-plus2-emmc.patch 
[ o.k. ] * [l][c] add-orangepi-zero-plus-pxe-support.patch 
[ o.k. ] * [l][c] add-orangepi-zero-usb-boot-support.patch 
[ o.k. ] * [l][c] add-orangepi-zeroplus2_h3.patch 
[ o.k. ] * [l][c] add-sunvell-r69.patch 
[ o.k. ] * [l][c] add-xx-boot-auto-dt-select-neo2.patch 
[ o.k. ] * [l][c] add-xx-nanopi-k1-plus-emmc.patch 
[ o.k. ] * [l][c] add-xx-nanopineocore2.patch 
[ o.k. ] * [l][c] add-zeropi.patch 
[ o.k. ] * [l][c] adjust-default-dram-clockspeeds.patch 
[ o.k. ] * [l][c] adjust-small-boards-cpufreq.patch 
[ o.k. ] * [l][c] enable-autoboot-keyed.patch 
[ o.k. ] * [l][c] enable-ethernet-orangepiprime.patch 
[ o.k. ] * [l][c] enable-r_pio-gpio-access-h3-h5.patch 
[ o.k. ] * [l][c] fdt-setprop-fix-unaligned-access.patch 
[ o.k. ] * [l][c] fix-sunxi-nand-spl.patch 
[ o.k. ] * [l][c] fix-usb1-vbus-opiwin.patch 
[ o.k. ] * [l][c] h3-Fix-PLL1-setup-to-never-use-dividers.patch 
[ o.k. ] * [l][c] h3-enable-power-led.patch 
[ o.k. ] * [l][c] h3-set-safe-axi_apb-clock-dividers.patch 
[ o.k. ] * [l][c] lower-default-DRAM-freq-A64-H5.patch 
[ o.k. ] * [l][c] pinebook-add-rare-panel-support.patch 
[ o.k. ] * [l][c] sun8i-set-machid.patch 
[ o.k. ] * [l][c] sunxi-boot-splash.patch 
[ o.k. ] * [l][c] sunxi_H616_GPU_enable_hack.patch 
[ o.k. ] * [l][c] xxx-disable-de2-to-improve-edid-detection.patch 
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  YACC    scripts/kconfig/zconf.tab.c
...
  CAT     u-boot-dtb.bin
  COPY    u-boot.dtb
  COPY    u-boot.bin
  MKIMAGE u-boot.img
  MKIMAGE u-boot-dtb.img
  BINMAN  all
[ o.k. ] Building deb [ linux-u-boot-current-cubietruck_22.11.0-trunk_armhf.deb ]
[ o.k. ] U-Boot build done [ @host ]
[ o.k. ] Target directory [ /home/mhoffrog/Projects/Armbian/build/output/debs/ ]
[ o.k. ] File name [ linux-u-boot-current-cubietruck_22.11.0-trunk_armhf.deb ]
[ o.k. ] Runtime [ 0 min ]
[ o.k. ] Repeat Build Options [ ./compile.sh  BOARD=cubietruck BRANCH=current RELEASE=focal BUILD_MINIMAL=yes BUILD_DESKTOP=no UBOOT_ONLY=yes KERNEL_ONLY=yes KERNEL_CONFIGURE=no COMPRESS_OUTPUTIMAGE=sha,gpg,7z  ]                                                
user@HOST:~/Projects/Armbian/build$

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I did create pull request Add UBOOT_ONLY option doc documentation#279 for the appropriate Armbian doc update
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[mhoffrog]

This pull request has become obsolete since of the discussion on issue #4421.

It will be replaced by a new pull request.

=> I close this one without merging.