diff options
Diffstat (limited to 'src/target/arm7_9_common.c')
| -rw-r--r-- | src/target/arm7_9_common.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c index b5434d68..ee814ba9 100644 --- a/src/target/arm7_9_common.c +++ b/src/target/arm7_9_common.c @@ -577,7 +577,8 @@ int arm7_9_execute_sys_speed(struct target_s *target) int arm7_9_execute_fast_sys_speed(struct target_s *target) { - u8 check_value[4], check_mask[4]; + static int set=0; + static u8 check_value[4], check_mask[4]; armv4_5_common_t *armv4_5 = target->arch_info; arm7_9_common_t *arm7_9 = armv4_5->arch_info; @@ -588,9 +589,18 @@ int arm7_9_execute_fast_sys_speed(struct target_s *target) jtag_add_end_state(TAP_RTI); arm_jtag_set_instr(jtag_info, 0x4, NULL); - /* check for DBGACK and SYSCOMP set (others don't care) */ - buf_set_u32(check_value, 0, 32, 0x9); - buf_set_u32(check_mask, 0, 32, 0x9); + if (!set) + { + /* check for DBGACK and SYSCOMP set (others don't care) */ + + /* NB! These are constants that must be available until after next jtag_execute() and + we evaluate the values upon first execution in lieu of setting up these constants + during early setup. + */ + buf_set_u32(check_value, 0, 32, 0x9); + buf_set_u32(check_mask, 0, 32, 0x9); + set=1; + } /* read debug status register */ embeddedice_read_reg_w_check(dbg_stat, check_value, check_value); |