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/*$$HEADER*/
/******************************************************************************/
/*                                                                            */
/*                    H E A D E R   I N F O R M A T I O N                     */
/*                                                                            */
/******************************************************************************/
 
// Project Name                   : OpenRISC Debug Proxy
// File Name                      : or_debug_proxy.c
// Prepared By                    : jb
// Project Start                  : 2008-10-01
 
/*$$COPYRIGHT NOTICE*/
/******************************************************************************/
/*                                                                            */
/*                      C O P Y R I G H T   N O T I C E                       */
/*                                                                            */
/******************************************************************************/
/*
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation;
  version 2.1 of the License, a copy of which is available from
  http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt.
 
  This library 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
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
 
/*$$DESCRIPTION*/
/******************************************************************************/
/*                                                                            */
/*                           D E S C R I P T I O N                            */
/*                                                                            */
/******************************************************************************/
//
// The entry point for the OpenRISC debug proxy console application. Is 
// compilable under both Linux/Unix systems and Cygwin Windows.
//
 
#include <assert.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <sys/types.h>
 
// Windows includes
#ifdef CYGWIN_COMPILE
#include <windows.h>
#include "win_FTCJTAG.h"
#include "win_FTCJTAG_ptrs.h"
#else
#include <signal.h>
void catch_sigint(int sig_num); // First param must be "int"
#endif
 
#include "gdb.h"
 
#ifdef USB_ENDPOINT_ENABLED
#include "usb_functions.h"
#endif
 
#include "or_debug_proxy.h"
 
// Defines of endpoint numbers
#define ENDPOINT_TARGET_NONE 0
#define ENDPOINT_TARGET_USB 1
#define ENDPOINT_TARGET_OTHER 2
 
static int endpoint_target;     // Value to hold targeted endpoint
 
#define GDB_PROTOCOL_JTAG  1
#define GDB_PROTOCOL_RSP   2
#define GDB_PROTOCOL_NONE  3
 
int err;                        // Global error value
 
/* Currently selected scan chain - just to prevent unnecessary transfers. */
int current_chain = -1;
 
/* The chain that should be currently selected. */
int dbg_chain = -1;
 
int main(int argc, char *argv[])
{
 
        char *s;
        int gdb_protocol = GDB_PROTOCOL_NONE;
        endpoint_target = ENDPOINT_TARGET_NONE;
        int inp_arg = 1;
 
        // Check we were compiled with at least one endpoint enabled
#ifndef USB_ENDPOINT_ENABLED
        printf
            ("No endpoints enabled.\nRecompile the proxy with at least one endpoint enabled\n");
        exit(0);
#endif
 
        // init our global error number
        err = DBG_ERR_OK;
 
        // Parse input options
        if (argc < 3) {
                print_usage();
                exit(1);
        }
 
        err = DBG_ERR_OK;
        srand(getpid());
 
        // Parse through the input, check what we've been given
 
        while (argv[inp_arg] != NULL) {
                if (strcmp(argv[inp_arg], "-r") == 0) {
                        gdb_protocol = GDB_PROTOCOL_RSP;
                        endpoint_target = ENDPOINT_TARGET_USB;
                } else if (strcmp(argv[inp_arg], "-o") == 0) {
                        gdb_protocol = GDB_PROTOCOL_RSP;
                        endpoint_target = ENDPOINT_TARGET_OTHER;
                } else if (strcmp(argv[inp_arg], "-k") == 0) {
                        kernel_debug = 1;
                } else {
                        serverPort = strtol(argv[2], &s, 10);
                }
 
                inp_arg++;
        }
 
        if (endpoint_target == ENDPOINT_TARGET_NONE ||
            gdb_protocol == GDB_PROTOCOL_NONE ||
            serverPort > 65535 || *s != '\0') {
                print_usage();
                exit(1);
        }
#ifdef CYGWIN_COMPILE
        // Load the FTCJTAG DLL function pointers
        if (getFTDIJTAGFunctions() < 0) {
                exit(-1);
        }
#endif
 
#ifndef CYGWIN_COMPILE
        // Install a signal handler to exit gracefully
        // when we receive a sigint
        signal(SIGINT, catch_sigint);
#endif
 
        /* Initialise connection to our OR1k system */
        current_chain = -1;
#ifdef USB_ENDPOINT_ENABLED
        /* USB Endpoint */
        if (endpoint_target == ENDPOINT_TARGET_USB) {
                printf("\nConnecting to OR1k via USB debug cable\n\n");
                if ((err = usb_dbg_reset()))
                        goto JtagIfError;
                dbg_test();     // Perform some tests
        }
#endif
 
        /* We have a connection to the target system.  Now establish server
           connection. */
        if (gdb_protocol == GDB_PROTOCOL_RSP) { // Connect to RSP server
                /* RSP always starts stalled as though we have just reset the
                   processor. */
                // rsp_exception (EXCEPT_TRAP);
                handle_rsp();
        } else {
                fprintf(stderr, "Cannot start RSP Proxy server on port %d\n",
                        serverPort);
                exit(-1);
        }
 
JtagIfError:
        fprintf(stderr,
                "Connection via USB debug cable failed (err = %d).\nPlease ensure the device is attached and correctly installed\n\n",
                err);
        exit(-1);
        return 0;
}
 
int dbg_reset()
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_reset();
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
void dbg_test()
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                usb_dbg_test();
#endif
}
 
/* Set TAP instruction register */
int dbg_set_tap_ir(uint32_t ir)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                usb_set_tap_ir(ir);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* Sets scan chain.  */
int dbg_set_chain(uint32_t chain)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_set_chain(chain);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* sends out a command with 32bit address and 16bit length, if len >= 0 */
int dbg_command(uint32_t type, uint32_t adr, uint32_t len)
{
        // This is never called by any of the VPI functions, so only USB 
        // endpoint
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_command(type, adr, len);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* writes a ctrl reg */
int dbg_ctrl(uint32_t reset, uint32_t stall)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_ctrl(reset, stall);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* reads control register */
int dbg_ctrl_read(uint32_t * reset, uint32_t * stall)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_ctrl_read(reset, stall);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* issues a burst read/write */
int dbg_go(unsigned char *data, uint16_t len, uint32_t read)
{
        // Only USB endpouint32_t option here
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_go(data, len, read);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* read a byte from wishbone */
int dbg_wb_read8(uint32_t adr, uint8_t * data)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_wb_read8(adr, data);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* read a word from wishbone */
int dbg_wb_read32(uint32_t adr, uint32_t * data)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_wb_read32(adr, data);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* write a word to wishbone */
int dbg_wb_write8(uint32_t adr, uint8_t data)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_wb_write8(adr, data);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* write a word to wishbone */
int dbg_wb_write32(uint32_t adr, uint32_t data)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_wb_write32(adr, data);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* read a block from wishbone */
int dbg_wb_read_block32(uint32_t adr, uint32_t * data, uint32_t len)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_wb_read_block32(adr, data, len);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* write a block to wishbone */
int dbg_wb_write_block32(uint32_t adr, uint32_t * data, uint32_t len)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_wb_write_block32(adr, data, len);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* read a register from cpu */
int dbg_cpu0_read(uint32_t adr, uint32_t * data, uint32_t length)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_cpu0_read(adr, data, length);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* write a cpu register */
int dbg_cpu0_write(uint32_t adr, uint32_t * data, uint32_t length)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_cpu0_write(adr, data, length);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* write a cpu module register */
int dbg_cpu0_write_ctrl(uint32_t adr, unsigned char data)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_cpu0_write_ctrl(adr, data);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
/* read a register from cpu module */
int dbg_cpu0_read_ctrl(uint32_t adr, unsigned char *data)
{
#ifdef USB_ENDPOINT_ENABLED
        if (endpoint_target == ENDPOINT_TARGET_USB)
                return usb_dbg_cpu0_read_ctrl(adr, data);
#endif
        return DBG_ERR_INVALID_ENDPOINT;
}
 
void test_sdram(void)
{
        return;
}
 
// Close down gracefully when we receive any kill signals
void catch_sigint(int sig_num)
{
        // Close down any potentially open sockets and USB handles
        if (server_fd)
                close(server_fd);
        gdb_close();
#ifdef USB_ENDPOINT_ENABLED
        usb_close_device_handle();
#endif
        printf
            ("\nInterrupt signal received. Closing down connections and exiting\n\n");
        exit(0);
}
 
void print_usage()
{
        printf("\n");
        printf("Usage: or_debug_proxy <SERVERTYPE> <PORT> <OPTIONS>\n");
        printf("OpenRISC GDB Proxy Server\n");
        printf("\n");
        printf("\tServer Type:\n");
#ifdef USB_ENDPOINT_ENABLED
        printf
            ("\t-r\tStart a server using RSP, connection to hadware target via\n\t\tUSB\n");
        printf
            ("\t-j\tStart a server using legacy OR remote JTAG protocol, to\n\t\thardware target via USB (DEPRECATED)\n");
        printf("\n");
#endif
        printf("\tPort:\n");
        printf("\t\tAny free port within the usable range of 0 - 65535\n");
        printf("\n");
        printf("\tOptions:\n");
        printf
            ("\t-k\tAccesses to 0xC0000000 map to 0x0. Useful for kernel debugging.\n");
        printf("\n");
        printf("\tExample:\n");
#ifdef USB_ENDPOINT_ENABLED
        printf
            ("\t\tStart a GDB server on port 50001, using RSP, connecting to\n\t\thardware target via USB:\n\n");
        printf("\t\t./or_debug_proxy -r 50001\n");
        printf("\n");
#endif
        fflush(stdout);
}

Line No.	Rev	Author	Line
1	39	julius	`/$$HEADER/`
2			`/******************************************************************************/`
3			`/* */`
4			`/* H E A D E R I N F O R M A T I O N */`
5			`/* */`
6			`/******************************************************************************/`
7
8			`// Project Name : OpenRISC Debug Proxy`
9			`// File Name : or_debug_proxy.c`
10			`// Prepared By : jb`
11			`// Project Start : 2008-10-01`
12
13			`/$$COPYRIGHT NOTICE/`
14			`/******************************************************************************/`
15			`/* */`
16			`/* C O P Y R I G H T N O T I C E */`
17			`/* */`
18			`/******************************************************************************/`
19			`/*`
20			`This library is free software; you can redistribute it and/or`
21			`modify it under the terms of the GNU Lesser General Public`
22			`License as published by the Free Software Foundation;`
23			`version 2.1 of the License, a copy of which is available from`
24			`http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt.`
25
26			`This library is distributed in the hope that it will be useful,`
27			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
28			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
29			`Lesser General Public License for more details.`
30
31			`You should have received a copy of the GNU Lesser General Public`
32			`License along with this library; if not, write to the Free Software`
33			`Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA`
34			`*/`
35
36			`/$$DESCRIPTION/`
37			`/******************************************************************************/`
38			`/* */`
39			`/* D E S C R I P T I O N */`
40			`/* */`
41			`/******************************************************************************/`
42			`//`
43			`// The entry point for the OpenRISC debug proxy console application. Is`
44			`// compilable under both Linux/Unix systems and Cygwin Windows.`
45			`//`
46
47			`#include <assert.h>`
48			`#include <stdio.h>`
49			`#include <ctype.h>`
50			`#include <string.h>`
51			`#include <stdlib.h>`
52			`#include <unistd.h>`
53			`#include <stdarg.h>`
54			`#include <sys/stat.h>`
55			`#include <sys/types.h>`
56
57			`// Windows includes`
58			`#ifdef CYGWIN_COMPILE`
59			`#include <windows.h>`
60			`#include "win_FTCJTAG.h"`
61			`#include "win_FTCJTAG_ptrs.h"`
62			`#else`
63			`#include <signal.h>`
64	497	julius	`void catch_sigint(int sig_num); // First param must be "int"`
65	39	julius	`#endif`
66
67			`#include "gdb.h"`
68
69			`#ifdef USB_ENDPOINT_ENABLED`
70			`#include "usb_functions.h"`
71			`#endif`
72
73			`#include "or_debug_proxy.h"`
74
75			`// Defines of endpoint numbers`
76			`#define ENDPOINT_TARGET_NONE 0`
77			`#define ENDPOINT_TARGET_USB 1`
78	376	julius	`#define ENDPOINT_TARGET_OTHER 2`
79	39	julius
80	497	julius	`static int endpoint_target; // Value to hold targeted endpoint`
81	39	julius
82			`#define GDB_PROTOCOL_JTAG 1`
83			`#define GDB_PROTOCOL_RSP 2`
84			`#define GDB_PROTOCOL_NONE 3`
85
86	497	julius	`int err; // Global error value`
87	39	julius
88			`/* Currently selected scan chain - just to prevent unnecessary transfers. */`
89			`int current_chain = -1;`
90
91			`/* The chain that should be currently selected. */`
92			`int dbg_chain = -1;`
93
94	497	julius	`int main(int argc, char *argv[])`
95			`{`
96	39	julius
97	497	julius	`char *s;`
98			`int gdb_protocol = GDB_PROTOCOL_NONE;`
99			`endpoint_target = ENDPOINT_TARGET_NONE;`
100			`int inp_arg = 1;`
101	39	julius
102	497	julius	`// Check we were compiled with at least one endpoint enabled`
103	39	julius	`#ifndef USB_ENDPOINT_ENABLED`
104	497	julius	`printf`
105			`("No endpoints enabled.\nRecompile the proxy with at least one endpoint enabled\n");`
106			`exit(0);`
107	39	julius	`#endif`
108
109	497	julius	`// init our global error number`
110			`err = DBG_ERR_OK;`
111	39	julius
112	497	julius	`// Parse input options`
113			`if (argc < 3) {`
114			`print_usage();`
115			`exit(1);`
116			`}`
117	39	julius
118	497	julius	`err = DBG_ERR_OK;`
119			`srand(getpid());`
120	39	julius
121	497	julius	`// Parse through the input, check what we've been given`
122	39	julius
123	497	julius	`while (argv[inp_arg] != NULL) {`
124			`if (strcmp(argv[inp_arg], "-r") == 0) {`
125			`gdb_protocol = GDB_PROTOCOL_RSP;`
126			`endpoint_target = ENDPOINT_TARGET_USB;`
127			`} else if (strcmp(argv[inp_arg], "-o") == 0) {`
128			`gdb_protocol = GDB_PROTOCOL_RSP;`
129			`endpoint_target = ENDPOINT_TARGET_OTHER;`
130			`} else if (strcmp(argv[inp_arg], "-k") == 0) {`
131			`kernel_debug = 1;`
132			`} else {`
133			`serverPort = strtol(argv[2], &s, 10);`
134			`}`
135
136			`inp_arg++;`
137	39	julius	`}`
138	497	julius
139			`if (endpoint_target == ENDPOINT_TARGET_NONE \|\|`
140			`gdb_protocol == GDB_PROTOCOL_NONE \|\|`
141			`serverPort > 65535 \|\| *s != '\0') {`
142			`print_usage();`
143			`exit(1);`
144	39	julius	`}`
145	497	julius	`#ifdef CYGWIN_COMPILE`
146			`// Load the FTCJTAG DLL function pointers`
147			`if (getFTDIJTAGFunctions() < 0) {`
148			`exit(-1);`
149	39	julius	`}`
150			`#endif`
151
152			`#ifndef CYGWIN_COMPILE`
153	497	julius	`// Install a signal handler to exit gracefully`
154			`// when we receive a sigint`
155			`signal(SIGINT, catch_sigint);`
156	39	julius	`#endif`
157	497	julius
158			`/* Initialise connection to our OR1k system */`
159			`current_chain = -1;`
160	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
161	497	julius	`/* USB Endpoint */`
162			`if (endpoint_target == ENDPOINT_TARGET_USB) {`
163			`printf("\nConnecting to OR1k via USB debug cable\n\n");`
164			`if ((err = usb_dbg_reset()))`
165			`goto JtagIfError;`
166			`dbg_test(); // Perform some tests`
167			`}`
168	39	julius	`#endif`
169
170	497	julius	`/* We have a connection to the target system. Now establish server`
171			`connection. */`
172			`if (gdb_protocol == GDB_PROTOCOL_RSP) { // Connect to RSP server`
173			`/* RSP always starts stalled as though we have just reset the`
174			`processor. */`
175			`// rsp_exception (EXCEPT_TRAP);`
176			`handle_rsp();`
177			`} else {`
178			`fprintf(stderr, "Cannot start RSP Proxy server on port %d\n",`
179			`serverPort);`
180			`exit(-1);`
181			`}`
182	39	julius
183			`JtagIfError:`
184	497	julius	`fprintf(stderr,`
185			`"Connection via USB debug cable failed (err = %d).\nPlease ensure the device is attached and correctly installed\n\n",`
186			`err);`
187			`exit(-1);`
188			`return 0;`
189	39	julius	`}`
190
191			`int dbg_reset()`
192			`{`
193			`#ifdef USB_ENDPOINT_ENABLED`
194	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
195			`return usb_dbg_reset();`
196	39	julius	`#endif`
197	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
198	39	julius	`}`
199
200	497	julius	`void dbg_test()`
201			`{`
202	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
203	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
204			`usb_dbg_test();`
205	39	julius	`#endif`
206			`}`
207
208			`/* Set TAP instruction register */`
209	497	julius	`int dbg_set_tap_ir(uint32_t ir)`
210			`{`
211	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
212	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
213			`usb_set_tap_ir(ir);`
214	39	julius	`#endif`
215	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
216	39	julius	`}`
217
218			`/* Sets scan chain. */`
219	497	julius	`int dbg_set_chain(uint32_t chain)`
220			`{`
221	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
222	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
223			`return usb_dbg_set_chain(chain);`
224	39	julius	`#endif`
225	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
226			`}`
227	39	julius
228			`/* sends out a command with 32bit address and 16bit length, if len >= 0 */`
229	497	julius	`int dbg_command(uint32_t type, uint32_t adr, uint32_t len)`
230			`{`
231			`// This is never called by any of the VPI functions, so only USB`
232			`// endpoint`
233	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
234	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
235			`return usb_dbg_command(type, adr, len);`
236	39	julius	`#endif`
237	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
238	39	julius	`}`
239
240			`/* writes a ctrl reg */`
241	497	julius	`int dbg_ctrl(uint32_t reset, uint32_t stall)`
242			`{`
243	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
244	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
245			`return usb_dbg_ctrl(reset, stall);`
246	39	julius	`#endif`
247	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
248	39	julius	`}`
249
250			`/* reads control register */`
251	497	julius	`int dbg_ctrl_read(uint32_t * reset, uint32_t * stall)`
252			`{`
253	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
254	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
255			`return usb_dbg_ctrl_read(reset, stall);`
256	39	julius	`#endif`
257	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
258	39	julius	`}`
259
260			`/* issues a burst read/write */`
261	497	julius	`int dbg_go(unsigned char *data, uint16_t len, uint32_t read)`
262			`{`
263			`// Only USB endpouint32_t option here`
264	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
265	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
266			`return usb_dbg_go(data, len, read);`
267	39	julius	`#endif`
268	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
269	39	julius	`}`
270
271	94	julius	`/* read a byte from wishbone */`
272	497	julius	`int dbg_wb_read8(uint32_t adr, uint8_t * data)`
273			`{`
274	94	julius	`#ifdef USB_ENDPOINT_ENABLED`
275	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
276			`return usb_dbg_wb_read8(adr, data);`
277	94	julius	`#endif`
278	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
279	94	julius	`}`
280
281	39	julius	`/* read a word from wishbone */`
282	497	julius	`int dbg_wb_read32(uint32_t adr, uint32_t * data)`
283			`{`
284	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
285	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
286			`return usb_dbg_wb_read32(adr, data);`
287	39	julius	`#endif`
288	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
289	39	julius	`}`
290
291	46	julius	`/* write a word to wishbone */`
292	497	julius	`int dbg_wb_write8(uint32_t adr, uint8_t data)`
293			`{`
294	46	julius	`#ifdef USB_ENDPOINT_ENABLED`
295	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
296			`return usb_dbg_wb_write8(adr, data);`
297	46	julius	`#endif`
298	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
299	46	julius	`}`
300	39	julius
301			`/* write a word to wishbone */`
302	497	julius	`int dbg_wb_write32(uint32_t adr, uint32_t data)`
303			`{`
304	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
305	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
306			`return usb_dbg_wb_write32(adr, data);`
307	39	julius	`#endif`
308	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
309	39	julius	`}`
310
311			`/* read a block from wishbone */`
312	497	julius	`int dbg_wb_read_block32(uint32_t adr, uint32_t * data, uint32_t len)`
313			`{`
314	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
315	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
316			`return usb_dbg_wb_read_block32(adr, data, len);`
317	39	julius	`#endif`
318	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
319	39	julius	`}`
320
321			`/* write a block to wishbone */`
322	497	julius	`int dbg_wb_write_block32(uint32_t adr, uint32_t * data, uint32_t len)`
323			`{`
324	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
325	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
326			`return usb_dbg_wb_write_block32(adr, data, len);`
327	39	julius	`#endif`
328	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
329	39	julius	`}`
330
331			`/* read a register from cpu */`
332	497	julius	`int dbg_cpu0_read(uint32_t adr, uint32_t * data, uint32_t length)`
333			`{`
334	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
335	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
336			`return usb_dbg_cpu0_read(adr, data, length);`
337	39	julius	`#endif`
338	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
339	39	julius	`}`
340
341			`/* write a cpu register */`
342	497	julius	`int dbg_cpu0_write(uint32_t adr, uint32_t * data, uint32_t length)`
343			`{`
344	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
345	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
346			`return usb_dbg_cpu0_write(adr, data, length);`
347	39	julius	`#endif`
348	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
349	39	julius	`}`
350
351			`/* write a cpu module register */`
352	497	julius	`int dbg_cpu0_write_ctrl(uint32_t adr, unsigned char data)`
353			`{`
354	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
355	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
356			`return usb_dbg_cpu0_write_ctrl(adr, data);`
357	39	julius	`#endif`
358	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
359	39	julius	`}`
360
361			`/* read a register from cpu module */`
362	497	julius	`int dbg_cpu0_read_ctrl(uint32_t adr, unsigned char *data)`
363			`{`
364	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
365	497	julius	`if (endpoint_target == ENDPOINT_TARGET_USB)`
366			`return usb_dbg_cpu0_read_ctrl(adr, data);`
367	39	julius	`#endif`
368	497	julius	`return DBG_ERR_INVALID_ENDPOINT;`
369	39	julius	`}`
370
371	497	julius	`void test_sdram(void)`
372			`{`
373	39	julius	`return;`
374			`}`
375
376			`// Close down gracefully when we receive any kill signals`
377			`void catch_sigint(int sig_num)`
378			`{`
379	497	julius	`// Close down any potentially open sockets and USB handles`
380			`if (server_fd)`
381			`close(server_fd);`
382			`gdb_close();`
383	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
384	497	julius	`usb_close_device_handle();`
385	39	julius	`#endif`
386	497	julius	`printf`
387			`("\nInterrupt signal received. Closing down connections and exiting\n\n");`
388			`exit(0);`
389	39	julius	`}`
390
391			`void print_usage()`
392			`{`
393	497	julius	`printf("\n");`
394			`printf("Usage: or_debug_proxy <SERVERTYPE> <PORT> <OPTIONS>\n");`
395			`printf("OpenRISC GDB Proxy Server\n");`
396			`printf("\n");`
397			`printf("\tServer Type:\n");`
398	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
399	497	julius	`printf`
400			`("\t-r\tStart a server using RSP, connection to hadware target via\n\t\tUSB\n");`
401			`printf`
402			`("\t-j\tStart a server using legacy OR remote JTAG protocol, to\n\t\thardware target via USB (DEPRECATED)\n");`
403			`printf("\n");`
404	39	julius	`#endif`
405	497	julius	`printf("\tPort:\n");`
406			`printf("\t\tAny free port within the usable range of 0 - 65535\n");`
407			`printf("\n");`
408			`printf("\tOptions:\n");`
409			`printf`
410			`("\t-k\tAccesses to 0xC0000000 map to 0x0. Useful for kernel debugging.\n");`
411			`printf("\n");`
412			`printf("\tExample:\n");`
413	39	julius	`#ifdef USB_ENDPOINT_ENABLED`
414	497	julius	`printf`
415			`("\t\tStart a GDB server on port 50001, using RSP, connecting to\n\t\thardware target via USB:\n\n");`
416			`printf("\t\t./or_debug_proxy -r 50001\n");`
417			`printf("\n");`
418	39	julius	`#endif`
419	497	julius	`fflush(stdout);`
420	39	julius	`}`

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