diff options
Diffstat (limited to 'core/cortex-m/watchdog.c')
| -rw-r--r-- | core/cortex-m/watchdog.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/core/cortex-m/watchdog.c b/core/cortex-m/watchdog.c index a67903df62..f9283bbbd7 100644 --- a/core/cortex-m/watchdog.c +++ b/core/cortex-m/watchdog.c @@ -7,10 +7,14 @@ #include "common.h" #include "panic.h" +#include "system.h" #include "task.h" #include "timer.h" #include "watchdog.h" +/* Panic data goes at the end of RAM. */ +static struct panic_data * const pdata_ptr = PANIC_DATA_PTR; + void __keep watchdog_trace(uint32_t excep_lr, uint32_t excep_sp) { uint32_t psp; @@ -28,6 +32,18 @@ void __keep watchdog_trace(uint32_t excep_lr, uint32_t excep_sp) panic_set_reason(PANIC_SW_WATCHDOG, stack[6], (excep_lr & 0xf) == 1 ? 0xff : task_get_current()); + /* Copy task# to cm.hfsr[9:2]. */ + pdata_ptr->cm.hfsr = HFSR_FLAG_WATCHDOG << 26 + | (pdata_ptr->cm.regs[1] & 0xff) << 2; + + /* + * Store LR in cm.regs[1] (ipsr). IPSR holds exception# but we don't + * need it because the reason (=PANIC_SW_WATCHDOG) is already stored + * in cm.regs[3] (r4). Note this overwrites task# in cm.regs[1] stored + * by panic_set_reason. + */ + pdata_ptr->cm.regs[1] = stack[5]; + panic_printf("### WATCHDOG PC=%08x / LR=%08x / pSP=%08x ", stack[6], stack[5], psp); if ((excep_lr & 0xf) == 1) |