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authorGareth McMullin2011-02-04 20:23:52 +1300
committerGareth McMullin2011-02-04 20:23:52 +1300
commit406617a2a470021d9412e9280feda0d28bdb653b (patch)
tree43b2cb9b562fde0bf5187c31dea77d72318cfc29 /src/jtagtap_generic.c
Import of working source tree.
Diffstat (limited to 'src/jtagtap_generic.c')
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1 files changed, 72 insertions, 0 deletions
diff --git a/src/jtagtap_generic.c b/src/jtagtap_generic.c
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+/*
+ * This file is part of the Black Magic Debug project.
+ *
+ * Copyright (C) 2011 Black Sphere Technologies Ltd.
+ * Written by Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This file provides generic forms of the low-level jtagtap functions
+ * for platforms that don't require optimised forms.
+ */
+
+#ifdef PROVIDE_GENERIC_JTAGTAP_TMS_SEQ
+void
+jtagtap_tms_seq(uint32_t MS, int ticks)
+{
+ while(ticks--) {
+ jtagtap_next(MS & 1, 1);
+ MS >>= 1;
+ }
+}
+#endif
+
+
+#ifdef PROVIDE_GENERIC_JTAGTAP_TDI_TDO_SEQ
+void
+jtagtap_tdi_tdo_seq(uint8_t *DO, const uint8_t final_tms, const uint8_t *DI, int ticks)
+{
+ uint8_t index = 1;
+ while(ticks--) {
+ if(jtagtap_next(ticks?0:final_tms, *DI & index)) {
+ *DO |= index;
+ } else {
+ *DO &= ~index;
+ }
+ if(!(index <<= 1)) {
+ index = 1;
+ DI++; DO++;
+ }
+ }
+}
+#endif
+
+
+#ifdef PROVIDE_GENERIC_JTAGTAP_TDI_SEQ
+void
+jtagtap_tdi_seq(const uint8_t final_tms, const uint8_t *DI, int ticks)
+{
+ uint8_t index = 1;
+ while(ticks--) {
+ jtagtap_next(ticks?0:final_tms, *DI & index);
+ if(!(index <<= 1)) {
+ index = 1;
+ DI++;
+ }
+ }
+}
+#endif
+
+