int mips_ejtag_exit_debug(struct mips_ejtag *ejtag_info)
{
- uint32_t instr = MIPS32_DRET;
- struct pracc_queue_info ctx = {.max_code = 1, .pracc_list = &instr, .code_count = 1, .store_count = 0};
+ uint32_t pracc_list[] = {MIPS32_DRET, 0};
+ struct pracc_queue_info ctx = {.max_code = 1, .pracc_list = pracc_list, .code_count = 1, .store_count = 0};
/* execute our dret instruction */
ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, NULL);
return ctx.retval;
}
+/* mips_ejtag_init_mmr - asign Memory-Mapped Registers depending
+ * on EJTAG version.
+ */
+static void mips_ejtag_init_mmr(struct mips_ejtag *ejtag_info)
+{
+ if (ejtag_info->ejtag_version == EJTAG_VERSION_20) {
+ ejtag_info->ejtag_ibs_addr = EJTAG_V20_IBS;
+ ejtag_info->ejtag_iba0_addr = EJTAG_V20_IBA0;
+ ejtag_info->ejtag_ibc_offs = EJTAG_V20_IBC_OFFS;
+ ejtag_info->ejtag_ibm_offs = EJTAG_V20_IBM_OFFS;
+
+ ejtag_info->ejtag_dbs_addr = EJTAG_V20_DBS;
+ ejtag_info->ejtag_dba0_addr = EJTAG_V20_DBA0;
+ ejtag_info->ejtag_dbc_offs = EJTAG_V20_DBC_OFFS;
+ ejtag_info->ejtag_dbm_offs = EJTAG_V20_DBM_OFFS;
+ ejtag_info->ejtag_dbv_offs = EJTAG_V20_DBV_OFFS;
+
+ ejtag_info->ejtag_iba_step_size = EJTAG_V20_IBAn_STEP;
+ ejtag_info->ejtag_dba_step_size = EJTAG_V20_DBAn_STEP;
+ } else {
+ ejtag_info->ejtag_ibs_addr = EJTAG_V25_IBS;
+ ejtag_info->ejtag_iba0_addr = EJTAG_V25_IBA0;
+ ejtag_info->ejtag_ibm_offs = EJTAG_V25_IBM_OFFS;
+ ejtag_info->ejtag_ibasid_offs = EJTAG_V25_IBASID_OFFS;
+ ejtag_info->ejtag_ibc_offs = EJTAG_V25_IBC_OFFS;
+
+ ejtag_info->ejtag_dbs_addr = EJTAG_V25_DBS;
+ ejtag_info->ejtag_dba0_addr = EJTAG_V25_DBA0;
+ ejtag_info->ejtag_dbm_offs = EJTAG_V25_DBM_OFFS;
+ ejtag_info->ejtag_dbasid_offs = EJTAG_V25_DBASID_OFFS;
+ ejtag_info->ejtag_dbc_offs = EJTAG_V25_DBC_OFFS;
+ ejtag_info->ejtag_dbv_offs = EJTAG_V25_DBV_OFFS;
+
+ ejtag_info->ejtag_iba_step_size = EJTAG_V25_IBAn_STEP;
+ ejtag_info->ejtag_dba_step_size = EJTAG_V25_DBAn_STEP;
+ }
+}
+
+static void ejtag_v20_print_imp(struct mips_ejtag *ejtag_info)
+{
+ LOG_DEBUG("EJTAG v2.0: features:%s%s%s%s%s%s%s%s",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_SDBBP) ? " SDBBP_SPECIAL2" : " SDBBP",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_EADDR_NO32BIT) ? " EADDR>32bit" : " EADDR=32bit",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_COMPLEX_BREAK) ? " COMPLEX_BREAK" : "",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_DCACHE_COH) ? " DCACHE_COH" : " DCACHE_NOT_COH",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_ICACHE_COH) ? " ICACHE_COH" : " ICACHE_NOT_COH",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_NOPB) ? " noPB" : " PB",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_NODB) ? " noDB" : " DB",
+ EJTAG_IMP_HAS(EJTAG_V20_IMP_NOIB) ? " noIB" : " IB");
+ LOG_DEBUG("EJTAG v2.0: Break Channels: %i",
+ (ejtag_info->impcode >> EJTAG_V20_IMP_BCHANNELS_SHIFT) &
+ EJTAG_V20_IMP_BCHANNELS_MASK);
+}
+
+static void ejtag_v26_print_imp(struct mips_ejtag *ejtag_info)
+{
+ LOG_DEBUG("EJTAG v2.6: features:%s%s",
+ EJTAG_IMP_HAS(EJTAG_V26_IMP_R3K) ? " R3k" : " R4k",
+ EJTAG_IMP_HAS(EJTAG_V26_IMP_DINT) ? " DINT" : "");
+}
+
+static void ejtag_main_print_imp(struct mips_ejtag *ejtag_info)
+{
+ LOG_DEBUG("EJTAG main: features:%s%s%s%s%s",
+ EJTAG_IMP_HAS(EJTAG_IMP_ASID8) ? " ASID_8" : "",
+ EJTAG_IMP_HAS(EJTAG_IMP_ASID6) ? " ASID_6" : "",
+ EJTAG_IMP_HAS(EJTAG_IMP_MIPS16) ? " MIPS16" : "",
+ EJTAG_IMP_HAS(EJTAG_IMP_NODMA) ? " noDMA" : " DMA",
+ EJTAG_IMP_HAS(EJTAG_DCR_MIPS64) ? " MIPS64" : " MIPS32");
+
+ switch (ejtag_info->ejtag_version) {
+ case EJTAG_VERSION_20:
+ ejtag_v20_print_imp(ejtag_info);
+ break;
+ case EJTAG_VERSION_25:
+ case EJTAG_VERSION_26:
+ case EJTAG_VERSION_31:
+ case EJTAG_VERSION_41:
+ case EJTAG_VERSION_51:
+ ejtag_v26_print_imp(ejtag_info);
+ break;
+ default:
+ break;
+ }
+}
+
int mips_ejtag_init(struct mips_ejtag *ejtag_info)
{
int retval;
LOG_DEBUG("EJTAG: Unknown Version Detected");
break;
}
- LOG_DEBUG("EJTAG: features:%s%s%s%s%s%s%s",
- ejtag_info->impcode & EJTAG_IMP_R3K ? " R3k" : " R4k",
- ejtag_info->impcode & EJTAG_IMP_DINT ? " DINT" : "",
- ejtag_info->impcode & (1 << 22) ? " ASID_8" : "",
- ejtag_info->impcode & (1 << 21) ? " ASID_6" : "",
- ejtag_info->impcode & EJTAG_IMP_MIPS16 ? " MIPS16" : "",
- ejtag_info->impcode & EJTAG_IMP_NODMA ? " noDMA" : " DMA",
- ejtag_info->impcode & EJTAG_DCR_MIPS64 ? " MIPS64" : " MIPS32");
-
- if ((ejtag_info->impcode & EJTAG_IMP_NODMA) == 0)
- LOG_DEBUG("EJTAG: DMA Access Mode Support Enabled");
-
- /* set initial state for ejtag control reg */
- ejtag_info->ejtag_ctrl = EJTAG_CTRL_ROCC | EJTAG_CTRL_PRACC | EJTAG_CTRL_PROBEN | EJTAG_CTRL_SETDEV;
+ ejtag_main_print_imp(ejtag_info);
+
+ if ((ejtag_info->impcode & EJTAG_IMP_NODMA) == 0) {
+ LOG_DEBUG("EJTAG: DMA Access Mode detected. Disabling to "
+ "workaround current broken code.");
+ ejtag_info->impcode |= EJTAG_IMP_NODMA;
+ }
+
+ ejtag_info->ejtag_ctrl = EJTAG_CTRL_PRACC | EJTAG_CTRL_PROBEN;
+
+ if (ejtag_info->ejtag_version != EJTAG_VERSION_20)
+ ejtag_info->ejtag_ctrl |= EJTAG_CTRL_ROCC | EJTAG_CTRL_SETDEV;
+
ejtag_info->fast_access_save = -1;
+ mips_ejtag_init_mmr(ejtag_info);
+
return ERROR_OK;
}
fields[1].in_value = NULL;
buf_set_u32(t, 0, 32, *data);
} else
- fields[1].in_value = (void *) data;
+ fields[1].in_value = (uint8_t *) data;
jtag_add_dr_scan(tap, 2, fields, TAP_IDLE);
projects / fw / openocd / blobdiff