diff options
Diffstat (limited to 'src/target/mips_m4k.c')
| -rw-r--r-- | src/target/mips_m4k.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/target/mips_m4k.c b/src/target/mips_m4k.c index 389daf97..d3536d8f 100644 --- a/src/target/mips_m4k.c +++ b/src/target/mips_m4k.c @@ -212,18 +212,17 @@ int mips_m4k_halt(struct target *target) int mips_m4k_assert_reset(struct target *target) { - struct mips32_common *mips32 = target_to_mips32(target); - struct mips_ejtag *ejtag_info = &mips32->ejtag_info; + struct mips_m4k_common *mips_m4k = target_to_m4k(target); + struct mips_ejtag *ejtag_info = &mips_m4k->mips32.ejtag_info; + int assert_srst = 1; LOG_DEBUG("target->state: %s", target_state_name(target)); enum reset_types jtag_reset_config = jtag_get_reset_config(); + if (!(jtag_reset_config & RESET_HAS_SRST)) - { - LOG_ERROR("Can't assert SRST"); - return ERROR_FAIL; - } + assert_srst = 0; if (target->reset_halt) { @@ -237,14 +236,7 @@ int mips_m4k_assert_reset(struct target *target) mips_ejtag_set_instr(ejtag_info, EJTAG_INST_NORMALBOOT, NULL); } - if (strcmp(target->variant, "ejtag_srst") == 0) - { - uint32_t ejtag_ctrl = ejtag_info->ejtag_ctrl | EJTAG_CTRL_PRRST | EJTAG_CTRL_PERRST; - LOG_DEBUG("Using EJTAG reset (PRRST) to reset processor..."); - mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL); - mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl); - } - else + if (assert_srst) { /* here we should issue a srst only, but we may have to assert trst as well */ if (jtag_reset_config & RESET_SRST_PULLS_TRST) @@ -256,11 +248,19 @@ int mips_m4k_assert_reset(struct target *target) jtag_add_reset(0, 1); } } + else + { + /* use ejtag reset - not supported by all cores */ + uint32_t ejtag_ctrl = ejtag_info->ejtag_ctrl | EJTAG_CTRL_PRRST | EJTAG_CTRL_PERRST; + LOG_DEBUG("Using EJTAG reset (PRRST) to reset processor..."); + mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL); + mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl); + } target->state = TARGET_RESET; jtag_add_sleep(50000); - register_cache_invalidate(mips32->core_cache); + register_cache_invalidate(mips_m4k->mips32.core_cache); if (target->reset_halt) { |