diff options
Diffstat (limited to 'src/target/arm7_9_common.c')
| -rw-r--r-- | src/target/arm7_9_common.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c index 9f05d777..e2eb0d5c 100644 --- a/src/target/arm7_9_common.c +++ b/src/target/arm7_9_common.c @@ -1021,6 +1021,17 @@ int arm7_9_assert_reset(target_t *target) return ERROR_FAIL; } + /* at this point trst has been asserted/deasserted once. We want to + * program embedded ice while SRST is asserted, but some CPUs gate + * the JTAG clock while SRST is asserted + */ + bool srst_asserted = false; + if (((jtag_reset_config & RESET_SRST_PULLS_TRST) == 0) && ((jtag_reset_config & RESET_SRST_GATES_JTAG) == 0)) + { + jtag_add_reset(0, 1); + srst_asserted = true; + } + if (target->reset_halt) { /* @@ -1053,7 +1064,7 @@ int arm7_9_assert_reset(target_t *target) if (jtag_reset_config & RESET_SRST_PULLS_TRST) { jtag_add_reset(1, 1); - } else + } else if (!srst_asserted) { jtag_add_reset(0, 1); } |