Add '-coreid' target option to support multiple cores per TAP.

ARM Cortex-A9 multi-core chips expose a single TAP/DAP which connects
to both cores.  The '-coreid' option selects which core the target
should connect to.

Note that at present, OpenOCD can connect to either core, but not both
simulatenously, until ADI contexts can be shared.

Signed-off-by: Aaron Carroll <aaronc@cse.unsw.edu.au>

diff --git a/src/target/target.c b/src/target/target.c
index 820e7471ae3644efe7fc5f3446b99e017eb9eade..31ade6acff60d9908b22734f3ed9092e325a1a17 100644 (file)
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -3660,6 +3660,7 @@ enum target_cfg_param {
        TCFG_WORK_AREA_BACKUP,
        TCFG_ENDIAN,
        TCFG_VARIANT,
+       TCFG_COREID,
        TCFG_CHAIN_POSITION,
 };
 
@@ -3672,6 +3673,7 @@ static Jim_Nvp nvp_config_opts[] = {
        { .name = "-work-area-backup", .value = TCFG_WORK_AREA_BACKUP },
        { .name = "-endian" ,          .value = TCFG_ENDIAN },
        { .name = "-variant",          .value = TCFG_VARIANT },
+       { .name = "-coreid",           .value = TCFG_COREID },
        { .name = "-chain-position",   .value = TCFG_CHAIN_POSITION },
 
        { .name = NULL, .value = -1 }
@@ -3924,6 +3926,23 @@ static int target_configure(Jim_GetOptInfo *goi, struct target *target)
                        Jim_SetResultString(goi->interp, target->variant,-1);
                        /* loop for more */
                        break;
+
+               case TCFG_COREID:
+                       if (goi->isconfigure) {
+                               e = Jim_GetOpt_Wide(goi, &w);
+                               if (e != JIM_OK) {
+                                       return e;
+                               }
+                               target->coreid = (int)w;
+                       } else {
+                               if (goi->argc != 0) {
+                                       goto no_params;
+                               }
+                       }
+                       Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->working_area_size));
+                       /* loop for more */
+                       break;
+
                case TCFG_CHAIN_POSITION:
                        if (goi->isconfigure) {
                                Jim_Obj *o_t;
@@ -4634,6 +4653,9 @@ static int target_create(Jim_GetOptInfo *goi)
        /* will be set by "-endian" */
        target->endianness = TARGET_ENDIAN_UNKNOWN;
 
+       /* default to first core, override with -coreid */
+       target->coreid = 0;
+
        target->working_area        = 0x0;
        target->working_area_size   = 0x0;
        target->working_areas       = NULL;

diff --git a/src/target/target.h b/src/target/target.h
index 4d03018e7015409896319d9ac7465f36b3b49a59..2c6f4cd50d680e37a2a9651b18f05946441b172b 100644 (file)
--- a/src/target/target.h
+++ b/src/target/target.h
@@ -107,6 +107,7 @@ struct target
        const char *cmd_name;                           /* tcl Name of target */
        int target_number;                                      /* DO NOT USE!  field to be removed in 2010 */
        struct jtag_tap *tap;                                   /* where on the jtag chain is this */
+       int coreid;                                                     /* which device on the TAP? */
        const char *variant;                            /* what variant of this chip is it? */
 
        /**