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By pressing "c" key during SPL execution, we force U-boot execution instead of a kernel XIP image. This fixes a hard fault when booting stm32f746-disco in SPL with "c" key pressed during SPL execution. U-Boot SPL 2022.10-rc5-00009-g40d02baa91 (Sep 20 2022 - 17:21:21 +0200) Trying to boot from XIP Hard fault pc : 080083fc lr : 08000d1b xPSR : 21000000 r12 : 2004f108 r3 : 080083fd r2 : 00000028 r1 : 2004f0c8 r0 : 2004f0e4 Resetting CPU ... This is due to SYS_UBOOT_START flag set to 0x080083FD which is not correct. If unset, SYS_UBOOT_START is set by default to CONFIG_SYS_TEXT_BASE which match with our requirement. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Tested-by: Waldemar Brodkorb <wbx@openadk.org>