When booting in JTAG mode, there is no way to use soft break-points, and no way of knowing when SPL has finished executing (so the user can issue a 'halt' command to load u-boot.bin for example)
Add a debug output and simple loop to stop execution at the completion of the SPL initialisation as a pseudo break-point when booting in JTAG mode
Signed-off-by: Graeme Russ gruss@tss-engineering.com ---
arch/arm/cpu/arm926ejs/mxs/spl_boot.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c index 2a5f817..7bfc623 100644 --- a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c +++ b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c @@ -157,6 +157,12 @@ void mxs_common_spl_init(const uint32_t arg, const uint32_t *resptr, data->boot_mode_idx = bootmode;
mxs_power_wait_pswitch(); + + + if (mxs_boot_modes[data->boot_mode_idx].boot_pads == 0x06) { + debug("SPL: Waiting for JTAG user\n"); + asm volatile ("x: b x"); + } }
/* Support aparatus */