* *
* Copyright (C) 2008 by David T.L. Wong *
* *
+ * Copyright (C) 2009 by David N. Claffey <dnclaffey@gmail.com> *
+ * *
* 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 2 of the License, or *
return ERROR_OK;
}
+
+int mips_ejtag_fastdata_scan(struct mips_ejtag *ejtag_info, int write, uint32_t *data)
+{
+ struct jtag_tap *tap;
+ tap = ejtag_info->tap;
+
+ if (tap == NULL)
+ return ERROR_FAIL;
+
+ struct scan_field fields[2];
+ uint8_t spracc = 0;
+ uint8_t t[4] = {0, 0, 0, 0};
+
+ /* fastdata 1-bit register */
+ fields[0].tap = tap;
+ fields[0].num_bits = 1;
+ fields[0].out_value = &spracc;
+ fields[0].in_value = NULL;
+
+ /* processor access data register 32 bit */
+ fields[1].tap = tap;
+ fields[1].num_bits = 32;
+ fields[1].out_value = t;
+
+ if (write)
+ {
+ fields[1].in_value = NULL;
+ buf_set_u32(t, 0, 32, *data);
+ }
+ else
+ {
+ fields[1].in_value = (uint8_t *) data;
+ }
+
+ jtag_add_dr_scan(2, fields, jtag_get_end_state());
+ keep_alive();
+
+ return ERROR_OK;
+}