-/***************************************************************************\r
- * Copyright (C) 2007-2008 by Øyvind Harboe *\r
- * *\r
- * This program is free software; you can redistribute it and/or modify *\r
- * it under the terms of the GNU General Public License as published by *\r
- * the Free Software Foundation; either version 2 of the License, or *\r
- * (at your option) any later version. *\r
- * *\r
- * This program is distributed in the hope that it will be useful, *\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *\r
- * GNU General Public License for more details. *\r
- * *\r
- * You should have received a copy of the GNU General Public License *\r
- * along with this program; if not, write to the *\r
- * Free Software Foundation, Inc., *\r
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *\r
- ***************************************************************************/\r
-\r
-#include <cyg/hal/hal_io.h> // low level i/o\r
-\r
-//#define VERBOSE(a) a\r
-#define VERBOSE(a)\r
-\r
-/* used to test manual mode */\r
-#define TEST_MANUAL() 0\r
-\r
-#if 0\r
-int diag_printf( const char *fmt, ... );\r
-#define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b); diag_printf("poke 0x%08x,0x%08x\n", a, b)\r
-#define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b); diag_printf("peek 0x%08x=0x%08x\n", a, b)\r
-#else\r
-#define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b)\r
-#define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b)\r
-#endif\r
-\r
-// FIFO empty?\r
-static __inline__ void waitIdle(void)\r
-{\r
- cyg_uint32 empty;\r
- do\r
- {\r
- ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, empty);\r
- } while ((empty & 0x100)==0);\r
-}\r
-\r
-static __inline__ void waitQueue(void)\r
-{\r
-// waitIdle();\r
-}\r
-\r
-static void sampleShiftRegister(void)\r
-{\r
-#if 0\r
- cyg_uint32 dummy;\r
- waitIdle();\r
- ZY1000_PEEK(ZY1000_JTAG_BASE+0xc, dummy);\r
-#endif\r
-}\r
-\r
-/* -O3 will inline this for us */\r
-static void setCurrentState(enum tap_state state)\r
-{\r
- cyg_uint32 a;\r
- a=state;\r
- int repeat=0;\r
- if (state==TAP_RESET)\r
- {\r
- // The FPGA nor we know the current state of the CPU TAP\r
- // controller. This will move it to TAP for sure.\r
- //\r
- // 5 should be enough here, 7 is what OpenOCD uses\r
- repeat=7;\r
- }\r
- waitQueue();\r
- sampleShiftRegister();\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|a);\r
-\r
-}\r
-\r
-/*\r
- * Enter state and cause repeat transitions *out* of that state. So if the endState!=state, then\r
- * the transition from state to endState counts as a transition out of state.\r
- */\r
-static __inline__ void shiftValueInner(const enum tap_state state, const enum tap_state endState, int repeat, cyg_uint32 value)\r
-{\r
- cyg_uint32 a,b;\r
- a=state;\r
- b=endState;\r
- waitQueue();\r
- sampleShiftRegister();\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value);\r
-#if 1\r
-#if TEST_MANUAL()\r
- if ((state==TAP_DRSHIFT)&&(endState!=TAP_DRSHIFT))\r
- {\r
- int i;\r
- setCurrentState(state);\r
- for (i=0; i<repeat; i++)\r
- {\r
- int tms;\r
- tms=0;\r
- if ((i==repeat-1)&&(state!=endState))\r
- {\r
- tms=1;\r
- }\r
- /* shift out value */\r
- waitIdle();\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x28, (((value>>i)&1)<<1)|tms);\r
- }\r
- waitIdle();\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x28, 0);\r
- waitIdle();\r
- //ZY1000_POKE(ZY1000_JTAG_BASE+0x20, TAP_DRSHIFT); // set this state and things break => expected\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x20, TAP_DRPAUSE); // set this and things will work => expected. Not setting this is not sufficient to make things break.\r
- setCurrentState(endState);\r
- } else\r
- {\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|b);\r
- }\r
-#else\r
- /* fast version */\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|b);\r
-#endif\r
-#else\r
- /* maximum debug version */\r
- if ((repeat>0)&&((state==TAP_DRSHIFT)||(state==TAP_SI)))\r
- {\r
- int i;\r
- /* sample shift register for every bit. */\r
- for (i=0; i<repeat-1; i++)\r
- {\r
- sampleShiftRegister();\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value>>i);\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (1<<8)|(a<<4)|a);\r
- }\r
- sampleShiftRegister();\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value>>(repeat-1));\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (1<<8)|(a<<4)|b);\r
- } else\r
- {\r
- sampleShiftRegister();\r
- ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|b);\r
- }\r
- sampleShiftRegister();\r
-#endif\r
-}\r
-\r
-\r
-\r
-static __inline__ void interface_jtag_add_dr_out_core(jtag_tap_t *target_tap,\r
- int num_fields,\r
- const int *num_bits,\r
- const u32 *value,\r
- enum tap_state end_state)\r
-{\r
- enum tap_state pause_state = TAP_DRSHIFT;\r
-\r
- jtag_tap_t *tap, *nextTap;\r
- for(tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap=nextTap)\r
- {\r
- nextTap=jtag_tap_next_enabled(tap);\r
- if (nextTap==NULL)\r
- {\r
- pause_state = end_state;\r
- }\r
- if (tap == target_tap)\r
- {\r
- int j;\r
- for (j=0; j<(num_fields-1); j++)\r
- {\r
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[j], value[j]);\r
- }\r
- shiftValueInner(TAP_DRSHIFT, pause_state, num_bits[j], value[j]);\r
- } else\r
- {\r
- /* program the scan field to 1 bit length, and ignore it's value */\r
- shiftValueInner(TAP_DRSHIFT, pause_state, 1, 0);\r
- }\r
- }\r
-}\r
-\r
-static __inline__ void interface_jtag_add_dr_out(jtag_tap_t *target_tap,\r
- int num_fields,\r
- const int *num_bits,\r
- const u32 *value,\r
- enum tap_state end_state)\r
-{\r
-\r
- int singletap=(jtag_tap_next_enabled(jtag_tap_next_enabled(NULL))==NULL);\r
- if ((singletap)&&(num_fields==3))\r
- {\r
- /* used by embeddedice_write_reg_inner() */\r
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[0], value[0]);\r
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[1], value[1]);\r
- shiftValueInner(TAP_DRSHIFT, end_state, num_bits[2], value[2]);\r
- } else if ((singletap)&&(num_fields==2))\r
- {\r
- /* used by arm7 code */\r
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[0], value[0]);\r
- shiftValueInner(TAP_DRSHIFT, end_state, num_bits[1], value[1]);\r
- } else\r
- {\r
- interface_jtag_add_dr_out_core(target_tap, num_fields, num_bits, value, end_state);\r
- }\r
-}\r
-\r
-#define interface_jtag_add_callback(callback, in) callback(in)\r
-\r
-#define interface_jtag_add_callback4(callback, in, data1, data2, data3) jtag_set_error(callback(in, data1, data2, data3))\r
+/***************************************************************************
+ * Copyright (C) 2007-2008 by Øyvind Harboe *
+ * *
+ * 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 *
+ * (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, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+
+#include <cyg/hal/hal_io.h> // low level i/o
+
+//#define VERBOSE(a) a
+#define VERBOSE(a)
+
+/* used to test manual mode */
+#define TEST_MANUAL() 0
+
+#if 0
+int diag_printf( const char *fmt, ... );
+#define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b); diag_printf("poke 0x%08x,0x%08x\n", a, b)
+#define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b); diag_printf("peek 0x%08x=0x%08x\n", a, b)
+#else
+#define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b)
+#define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b)
+#endif
+
+// FIFO empty?
+static __inline__ void waitIdle(void)
+{
+ cyg_uint32 empty;
+ do
+ {
+ ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, empty);
+ } while ((empty & 0x100)==0);
+}
+
+static __inline__ void waitQueue(void)
+{
+// waitIdle();
+}
+
+static void sampleShiftRegister(void)
+{
+#if 0
+ cyg_uint32 dummy;
+ waitIdle();
+ ZY1000_PEEK(ZY1000_JTAG_BASE+0xc, dummy);
+#endif
+}
+
+/* -O3 will inline this for us */
+static void setCurrentState(enum tap_state state)
+{
+ cyg_uint32 a;
+ a=state;
+ int repeat=0;
+ if (state==TAP_RESET)
+ {
+ // The FPGA nor we know the current state of the CPU TAP
+ // controller. This will move it to TAP for sure.
+ //
+ // 5 should be enough here, 7 is what OpenOCD uses
+ repeat=7;
+ }
+ waitQueue();
+ sampleShiftRegister();
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|a);
+
+}
+
+/*
+ * Enter state and cause repeat transitions *out* of that state. So if the endState!=state, then
+ * the transition from state to endState counts as a transition out of state.
+ */
+static __inline__ void shiftValueInner(const enum tap_state state, const enum tap_state endState, int repeat, cyg_uint32 value)
+{
+ cyg_uint32 a,b;
+ a=state;
+ b=endState;
+ waitQueue();
+ sampleShiftRegister();
+ ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value);
+#if 1
+#if TEST_MANUAL()
+ if ((state==TAP_DRSHIFT)&&(endState!=TAP_DRSHIFT))
+ {
+ int i;
+ setCurrentState(state);
+ for (i=0; i<repeat; i++)
+ {
+ int tms;
+ tms=0;
+ if ((i==repeat-1)&&(state!=endState))
+ {
+ tms=1;
+ }
+ /* shift out value */
+ waitIdle();
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x28, (((value>>i)&1)<<1)|tms);
+ }
+ waitIdle();
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x28, 0);
+ waitIdle();
+ //ZY1000_POKE(ZY1000_JTAG_BASE+0x20, TAP_DRSHIFT); // set this state and things break => expected
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x20, TAP_DRPAUSE); // set this and things will work => expected. Not setting this is not sufficient to make things break.
+ setCurrentState(endState);
+ } else
+ {
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|b);
+ }
+#else
+ /* fast version */
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|b);
+#endif
+#else
+ /* maximum debug version */
+ if ((repeat>0)&&((state==TAP_DRSHIFT)||(state==TAP_SI)))
+ {
+ int i;
+ /* sample shift register for every bit. */
+ for (i=0; i<repeat-1; i++)
+ {
+ sampleShiftRegister();
+ ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value>>i);
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (1<<8)|(a<<4)|a);
+ }
+ sampleShiftRegister();
+ ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value>>(repeat-1));
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (1<<8)|(a<<4)|b);
+ } else
+ {
+ sampleShiftRegister();
+ ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (repeat<<8)|(a<<4)|b);
+ }
+ sampleShiftRegister();
+#endif
+}
+
+
+
+static __inline__ void interface_jtag_add_dr_out_core(jtag_tap_t *target_tap,
+ int num_fields,
+ const int *num_bits,
+ const u32 *value,
+ enum tap_state end_state)
+{
+ enum tap_state pause_state = TAP_DRSHIFT;
+
+ jtag_tap_t *tap, *nextTap;
+ for(tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap=nextTap)
+ {
+ nextTap=jtag_tap_next_enabled(tap);
+ if (nextTap==NULL)
+ {
+ pause_state = end_state;
+ }
+ if (tap == target_tap)
+ {
+ int j;
+ for (j=0; j<(num_fields-1); j++)
+ {
+ shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[j], value[j]);
+ }
+ shiftValueInner(TAP_DRSHIFT, pause_state, num_bits[j], value[j]);
+ } else
+ {
+ /* program the scan field to 1 bit length, and ignore it's value */
+ shiftValueInner(TAP_DRSHIFT, pause_state, 1, 0);
+ }
+ }
+}
+
+static __inline__ void interface_jtag_add_dr_out(jtag_tap_t *target_tap,
+ int num_fields,
+ const int *num_bits,
+ const u32 *value,
+ enum tap_state end_state)
+{
+
+ int singletap=(jtag_tap_next_enabled(jtag_tap_next_enabled(NULL))==NULL);
+ if ((singletap)&&(num_fields==3))
+ {
+ /* used by embeddedice_write_reg_inner() */
+ shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[0], value[0]);
+ shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[1], value[1]);
+ shiftValueInner(TAP_DRSHIFT, end_state, num_bits[2], value[2]);
+ } else if ((singletap)&&(num_fields==2))
+ {
+ /* used by arm7 code */
+ shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[0], value[0]);
+ shiftValueInner(TAP_DRSHIFT, end_state, num_bits[1], value[1]);
+ } else
+ {
+ interface_jtag_add_dr_out_core(target_tap, num_fields, num_bits, value, end_state);
+ }
+}
+
+#define interface_jtag_add_callback(callback, in) callback(in)
+
+#define interface_jtag_add_callback4(callback, in, data1, data2, data3) jtag_set_error(callback(in, data1, data2, data3))
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