diff options
Diffstat (limited to 'src/target/mips32.c')
| -rw-r--r-- | src/target/mips32.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/target/mips32.c b/src/target/mips32.c index b05a563..795efdd 100644 --- a/src/target/mips32.c +++ b/src/target/mips32.c @@ -536,10 +536,15 @@ int mips32_configure_break_unit(struct target *target) if (retval != ERROR_OK) return retval; - /* EJTAG 2.0 does not specify EJTAG_DCR_IB and EJTAG_DCR_DB bits, - * assume IB and DB registers are always present. */ - if (ejtag_info->ejtag_version == EJTAG_VERSION_20) - dcr |= EJTAG_DCR_IB | EJTAG_DCR_DB; + /* EJTAG 2.0 defines IB and DB bits in IMP instead of DCR. + * Since these DCR bits should be reserved on EJTAG 2.0, we can + * just remap them. */ + if (ejtag_info->ejtag_version == EJTAG_VERSION_20) { + if (!(ejtag_info->impcode & EJTAG_V20_IMP_NOIB)) + dcr |= EJTAG_DCR_IB; + if (!(ejtag_info->impcode & EJTAG_V20_IMP_NODB)) + dcr |= EJTAG_DCR_DB; + } if (dcr & EJTAG_DCR_IB) { retval = mips32_configure_ibs(target); |