On 24/01/15 14:32, Graeme Russ wrote:
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
Changes in v2
- Added and used boot mode #defines
arch/arm/cpu/arm926ejs/mxs/spl_boot.c | 6 ++++++ arch/arm/include/asm/arch-mxs/sys_proto.h | 17 +++++++++++++++++ 2 files changed, 23 insertions(+)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c index 2a5f817..d1457e0 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();
My bad - I missed this. I'll post a v3
- if (mxs_boot_modes[data->boot_mode_idx].boot_pads == MXS_BM_JTAG) {
debug("SPL: Waiting for JTAG user\n");asm volatile ("x: b x");- } }
Regards,
Graeme