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cortexm_forced_halt: Only release SRST after "Halt on reset" command. 

This should make life easier if program remaps JTAG/SWD pins so that
with program running, JTAG/SWD access is impossible.
This commit is contained in:
Uwe Bonnes 2018-09-10 22:24:49 +02:00 committed by Gareth McMullin
parent 3ebf049424
commit 8d6092b73f
1 changed files with 2 additions and 9 deletions
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11
src/target/cortexm.c
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@ -239,17 +239,10 @@ static void cortexm_priv_free(void *priv)
static bool cortexm_forced_halt(target *t) static bool cortexm_forced_halt(target *t)
{ {
uint32_t start_time = platform_time_ms(); target_halt_request(t);
platform_srst_set_val(false); platform_srst_set_val(false);
/* Wait until SRST is released.*/
while (platform_time_ms() < start_time + 2000) {
if (!platform_srst_get_val())
break;
}
if (platform_srst_get_val())
return false;
uint32_t dhcsr = 0; uint32_t dhcsr = 0;
start_time = platform_time_ms(); uint32_t start_time = platform_time_ms();
/* Try hard to halt the target. STM32F7 in WFI /* Try hard to halt the target. STM32F7 in WFI
needs multiple writes!*/ needs multiple writes!*/
while (platform_time_ms() < start_time + cortexm_wait_timeout) { while (platform_time_ms() < start_time + cortexm_wait_timeout) {