Re: Understanding how .config for uboot is generated in buildroot
On Tue, Oct 17, 2023 at 7:17 PM Paul Barker wrote: > On Tue, Oct 17, 2023 at 04:35:20PM +1100, Ignatius Rivaldi wrote: > > Hi all, > > > > When I edit the config file in BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE in a > > buildroot recipe, how does the config statements from that file got > > converted into .config file in u-boot? > > > > The background is that we're using a custom buildroot config file at > here: > > https://github.com/kubos/kubos-linux-build/tree/master to build u-boot > for > > a space grade computer. When I added a new config statement > > (CONFIG_SD_SWITCH=y) in the BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE, it > doesn't > > write the config statement to the .config file in the uboot build repo. > > > > Unfortunately the company that owns that has been acquired several times > > and all the engineers there already left, so I can't just ask them > > You're probably better off asking this on the buildroot mailing list. > See https://lists.buildroot.org/mailman/listinfo/buildroot. > > Best regards, > Paul > Thanks for the pointer, I kind of solved this by adding CONFIG_SD_SWITCH to uboot kconfig definition file, and now when I added CONFIG_SD_SWITCH to the _config file it works. I'll ask about buildroot stuff on the buildroot mailing list after this. The next problem is that the way Kubos implemented SD card slot switching is by calling into their own proprietary(?) binary blob through the standalone application thing: https://www.emblogic.com/blog/12/u-boot-standalone-applications/. What happens now is that Uboot is stuck at ## Starting application at 0×2180. What are the possible causes of this, and how do I start debugging this? Fortunately Kubos gave us the source code for that binary blob before they go bankrupt, so we can tweak it
Re: Understanding how .config for uboot is generated in buildroot
On Tue, Oct 17, 2023 at 04:35:20PM +1100, Ignatius Rivaldi wrote: > Hi all, > > When I edit the config file in BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE in a > buildroot recipe, how does the config statements from that file got > converted into .config file in u-boot? > > The background is that we're using a custom buildroot config file at here: > https://github.com/kubos/kubos-linux-build/tree/master to build u-boot for > a space grade computer. When I added a new config statement > (CONFIG_SD_SWITCH=y) in the BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE, it doesn't > write the config statement to the .config file in the uboot build repo. > > Unfortunately the company that owns that has been acquired several times > and all the engineers there already left, so I can't just ask them You're probably better off asking this on the buildroot mailing list. See https://lists.buildroot.org/mailman/listinfo/buildroot. Best regards, Paul signature.asc Description: PGP signature
Understanding how .config for uboot is generated in buildroot
Hi all, When I edit the config file in BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE in a buildroot recipe, how does the config statements from that file got converted into .config file in u-boot? The background is that we're using a custom buildroot config file at here: https://github.com/kubos/kubos-linux-build/tree/master to build u-boot for a space grade computer. When I added a new config statement (CONFIG_SD_SWITCH=y) in the BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE, it doesn't write the config statement to the .config file in the uboot build repo. Unfortunately the company that owns that has been acquired several times and all the engineers there already left, so I can't just ask them Thanks Ignatius
