On ARM v7M, the processor will return to ARM mode when executing blx instruction with bit 0 of the address == 0. Always set it to 1 to stay in thumb mode.
Similar commit: f99993c10882f7dc8ec35993d5febe59aac01e6a Author: Matt Porter <[email protected]> Date: Tue May 5 15:00:23 2015 -0400 common/cmd_boot: keep ARM v7M in thumb mode during do_go_exec() Signed-off-by: Vikas Manocha <[email protected]> --- common/spl/spl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/common/spl/spl.c b/common/spl/spl.c index 2bc8b42..54897e7 100644 --- a/common/spl/spl.c +++ b/common/spl/spl.c @@ -85,6 +85,9 @@ void spl_set_header_raw_uboot(struct spl_image_info *spl_image) { spl_image->size = CONFIG_SYS_MONITOR_LEN; spl_image->entry_point = CONFIG_SYS_UBOOT_START; +#ifdef CONFIG_CPU_V7M + spl_image->entry_point |= 0x1; +#endif spl_image->load_addr = CONFIG_SYS_TEXT_BASE; spl_image->os = IH_OS_U_BOOT; spl_image->name = "U-Boot"; -- 1.9.1 _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
