* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
* 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 *
#include "config.h"
#endif
-#include "replacements.h"
-
-#include "jtag.h"
+#include "interface.h"
#include "bitbang.h"
-/* system includes */
/* -ino: 060521-1036 */
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-
-#include <sys/types.h>
#include <machine/sysarch.h>
#include <machine/cpufunc.h>
#define ioperm(startport,length,enable)\
i386_set_ioperm((startport), (length), (enable))
-
-#else
-
-#ifdef _WIN32
-#include "errno.h"
-#endif /* _WIN32 */
-
#endif /* __FreeBSD__ */
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
#if PARPORT_USE_PPDEV == 1
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include <dev/ppbus/ppi.h>
#include <linux/parport.h>
#include <linux/ppdev.h>
#endif
-#include <fcntl.h>
#include <sys/ioctl.h>
#else /* not PARPORT_USE_PPDEV */
#ifndef _WIN32
#endif
#endif
-#if PARPORT_USE_GIVEIO == 1
-#if IS_CYGWIN == 1
+#if PARPORT_USE_GIVEIO == 1 && IS_CYGWIN == 1
#include <windows.h>
-#include <errno.h>
-#endif
#endif
-#include "log.h"
/* parallel port cable description
*/
typedef struct cable_s
{
char* name;
- u8 TDO_MASK; /* status port bit containing current TDO value */
- u8 TRST_MASK; /* data port bit for TRST */
- u8 TMS_MASK; /* data port bit for TMS */
- u8 TCK_MASK; /* data port bit for TCK */
- u8 TDI_MASK; /* data port bit for TDI */
- u8 SRST_MASK; /* data port bit for SRST */
- u8 OUTPUT_INVERT; /* data port bits that should be inverted */
- u8 INPUT_INVERT; /* status port that should be inverted */
- u8 PORT_INIT; /* initialize data port with this value */
- u8 PORT_EXIT; /* de-initialize data port with this value */
- u8 LED_MASK; /* data port bit for LED */
+ uint8_t TDO_MASK; /* status port bit containing current TDO value */
+ uint8_t TRST_MASK; /* data port bit for TRST */
+ uint8_t TMS_MASK; /* data port bit for TMS */
+ uint8_t TCK_MASK; /* data port bit for TCK */
+ uint8_t TDI_MASK; /* data port bit for TDI */
+ uint8_t SRST_MASK; /* data port bit for SRST */
+ uint8_t OUTPUT_INVERT; /* data port bits that should be inverted */
+ uint8_t INPUT_INVERT; /* status port that should be inverted */
+ uint8_t PORT_INIT; /* initialize data port with this value */
+ uint8_t PORT_EXIT; /* de-initialize data port with this value */
+ uint8_t LED_MASK; /* data port bit for LED */
} cable_t;
-cable_t cables[] =
-{
+static cable_t cables[] =
+{
/* name tdo trst tms tck tdi srst o_inv i_inv init exit led */
{ "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 },
{ "wiggler2", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 },
{ "wiggler_ntrst_inverted",
0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80, 0x80, 0x00 },
{ "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80, 0x80, 0x00 },
+ { "arm-jtag", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x01, 0x80, 0x80, 0x80, 0x00 },
{ "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
{ "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00 },
{ "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
};
/* configuration */
-char* parport_cable = NULL;
-u16 parport_port;
+static char* parport_cable = NULL;
+static uint16_t parport_port;
static int parport_exit = 0;
+static uint32_t parport_toggling_time_ns = 1000;
+static int wait_states;
/* interface variables
*/
static cable_t* cable;
-static u8 dataport_value = 0x0;
+static uint8_t dataport_value = 0x0;
#if PARPORT_USE_PPDEV == 1
static int device_handle;
static unsigned long statusport;
#endif
-/* low level command set
- */
-int parport_read(void);
-void parport_write(int tck, int tms, int tdi);
-void parport_reset(int trst, int srst);
-void parport_led(int on);
-
-int parport_speed(int speed);
-int parport_register_commands(struct command_context_s *cmd_ctx);
-int parport_init(void);
-int parport_quit(void);
-
-/* interface commands */
-int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
-jtag_interface_t parport_interface =
-{
- .name = "parport",
-
- .execute_queue = bitbang_execute_queue,
-
- .speed = parport_speed,
- .register_commands = parport_register_commands,
- .init = parport_init,
- .quit = parport_quit,
-};
-
-bitbang_interface_t parport_bitbang =
-{
- .read = parport_read,
- .write = parport_write,
- .reset = parport_reset,
- .blink = parport_led
-};
-
-int parport_read(void)
+static int parport_read(void)
{
int data = 0;
-
+
#if PARPORT_USE_PPDEV == 1
ioctl(device_handle, PPRSTATUS, & data);
#else
static __inline__ void parport_write_data(void)
{
- u8 output;
+ uint8_t output;
output = dataport_value ^ cable->OUTPUT_INVERT;
#if PARPORT_USE_PPDEV == 1
#endif
}
-void parport_write(int tck, int tms, int tdi)
+static void parport_write(int tck, int tms, int tdi)
{
- int i = jtag_speed + 1;
-
+ int i = wait_states + 1;
+
if (tck)
dataport_value |= cable->TCK_MASK;
else
dataport_value &= ~cable->TCK_MASK;
-
+
if (tms)
dataport_value |= cable->TMS_MASK;
else
dataport_value &= ~cable->TMS_MASK;
-
+
if (tdi)
dataport_value |= cable->TDI_MASK;
else
dataport_value &= ~cable->TDI_MASK;
-
+
while (i-- > 0)
parport_write_data();
}
/* (1) assert or (0) deassert reset lines */
-void parport_reset(int trst, int srst)
+static void parport_reset(int trst, int srst)
{
LOG_DEBUG("trst: %i, srst: %i", trst, srst);
dataport_value |= cable->SRST_MASK;
else if (srst == 1)
dataport_value &= ~cable->SRST_MASK;
-
+
parport_write_data();
}
-
+
/* turn LED on parport adapter on (1) or off (0) */
-void parport_led(int on)
+static void parport_led(int on)
{
if (on)
dataport_value |= cable->LED_MASK;
parport_write_data();
}
-int parport_speed(int speed)
+static int parport_speed(int speed)
+{
+ wait_states = speed;
+ return ERROR_OK;
+}
+
+static int parport_khz(int khz, int* jtag_speed)
{
+ if (khz == 0) {
+ LOG_DEBUG("RCLK not supported");
+ return ERROR_FAIL;
+ }
+
+ *jtag_speed = 499999 / (khz * parport_toggling_time_ns);
return ERROR_OK;
}
-int parport_register_commands(struct command_context_s *cmd_ctx)
+static int parport_speed_div(int speed, int* khz)
{
- register_command(cmd_ctx, NULL, "parport_port", parport_handle_parport_port_command,
- COMMAND_CONFIG, NULL);
- register_command(cmd_ctx, NULL, "parport_cable", parport_handle_parport_cable_command,
- COMMAND_CONFIG, NULL);
- register_command(cmd_ctx, NULL, "parport_write_on_exit", parport_handle_write_on_exit_command,
- COMMAND_CONFIG, NULL);
+ uint32_t denominator = (speed + 1) * parport_toggling_time_ns;
+ *khz = (499999 + denominator) / denominator;
return ERROR_OK;
}
#if PARPORT_USE_GIVEIO == 1
-int parport_get_giveio_access(void)
+static int parport_get_giveio_access(void)
{
HANDLE h;
OSVERSIONINFO version;
-
+
version.dwOSVersionInfoSize = sizeof version;
- if (!GetVersionEx( &version )) {
+ if (!GetVersionEx(&version)) {
errno = EINVAL;
return -1;
}
if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
return 0;
-
- h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
+
+ h = CreateFile("\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE) {
errno = ENODEV;
return -1;
}
-
- CloseHandle( h );
-
+
+ CloseHandle(h);
+
return 0;
}
#endif
-int parport_init(void)
+static bitbang_interface_t parport_bitbang = {
+ .read = &parport_read,
+ .write = &parport_write,
+ .reset = &parport_reset,
+ .blink = &parport_led,
+ };
+
+static int parport_init(void)
{
cable_t *cur_cable;
#if PARPORT_USE_PPDEV == 1
char buffer[256];
int i = 0;
#endif
-
+
cur_cable = cables;
-
+
if ((parport_cable == NULL) || (parport_cable[0] == 0))
{
parport_cable = "wiggler";
LOG_WARNING("No parport cable specified, using default 'wiggler'");
}
-
+
while (cur_cable->name)
{
if (strcmp(cur_cable->name, parport_cable) == 0)
LOG_ERROR("No matching cable found for %s", parport_cable);
return ERROR_JTAG_INIT_FAILED;
}
-
+
dataport_value = cable->PORT_INIT;
-
+
#if PARPORT_USE_PPDEV == 1
if (device_handle > 0)
{
if (device_handle < 0)
{
- LOG_ERROR("cannot open device. check it exists and that user read and write rights are set");
+ int err = errno;
+ LOG_ERROR("cannot open device. check it exists and that user read and write rights are set. errno=%d", err);
return ERROR_JTAG_INIT_FAILED;
}
LOG_DEBUG("...open");
#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__)
- i=ioctl(device_handle, PPCLAIM);
- if (i<0)
+ i = ioctl(device_handle, PPCLAIM);
+ if (i < 0)
{
LOG_ERROR("cannot claim device");
return ERROR_JTAG_INIT_FAILED;
i = PARPORT_MODE_COMPAT;
i= ioctl(device_handle, PPSETMODE, & i);
- if (i<0)
+ if (i < 0)
{
LOG_ERROR(" cannot set compatible mode to device");
return ERROR_JTAG_INIT_FAILED;
i = IEEE1284_MODE_COMPAT;
i = ioctl(device_handle, PPNEGOT, & i);
- if (i<0)
+ if (i < 0)
{
LOG_ERROR("cannot set compatible 1284 mode to device");
return ERROR_JTAG_INIT_FAILED;
parport_port = 0x378;
LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
}
-
+
dataport = parport_port;
statusport = parport_port + 1;
-
+
LOG_DEBUG("requesting privileges for parallel port 0x%lx...", dataport);
#if PARPORT_USE_GIVEIO == 1
if (parport_get_giveio_access() != 0)
return ERROR_JTAG_INIT_FAILED;
}
LOG_DEBUG("...privileges granted");
-
+
/* make sure parallel port is in right mode (clear tristate and interrupt */
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
outb(parport_port + 2, 0x0);
#else
outb(0x0, parport_port + 2);
#endif
-
+
#endif /* PARPORT_USE_PPDEV */
-
+
parport_reset(0, 0);
parport_write(0, 0, 0);
parport_led(1);
- bitbang_interface = &parport_bitbang;
+ bitbang_interface = &parport_bitbang;
+
+ wait_states = jtag_get_speed();
return ERROR_OK;
}
-int parport_quit(void)
+static int parport_quit(void)
{
parport_led(0);
dataport_value = cable->PORT_EXIT;
parport_write_data();
}
-
+
if (parport_cable)
{
free(parport_cable);
parport_cable = NULL;
}
-
+
return ERROR_OK;
}
-int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(parport_handle_parport_port_command)
{
- if (argc == 0)
- return ERROR_OK;
+ if (argc == 1)
+ {
+ /* only if the port wasn't overwritten by cmdline */
+ if (parport_port == 0)
+ {
+ COMMAND_PARSE_NUMBER(u16, args[0], parport_port);
+ }
+ else
+ {
+ LOG_ERROR("The parport port was already configured!");
+ return ERROR_FAIL;
+ }
+ }
- /* only if the port wasn't overwritten by cmdline */
- if (parport_port == 0)
- parport_port = strtoul(args[0], NULL, 0);
+ command_print(cmd_ctx, "parport port = %u", parport_port);
return ERROR_OK;
}
-int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(parport_handle_parport_cable_command)
{
if (argc == 0)
return ERROR_OK;
return ERROR_OK;
}
-int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(parport_handle_write_on_exit_command)
{
if (argc != 1)
{
- command_print(cmd_ctx, "usage: parport_write_on_exit <on|off>");
+ command_print(cmd_ctx, "usage: parport_write_on_exit <on | off>");
return ERROR_OK;
}
-
+
if (strcmp(args[0], "on") == 0)
parport_exit = 1;
else if (strcmp(args[0], "off") == 0)
parport_exit = 0;
-
+
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(parport_handle_parport_toggling_time_command)
+{
+ if (argc == 1) {
+ uint32_t ns;
+ int retval = parse_u32(args[0], &ns);
+
+ if (ERROR_OK != retval)
+ return retval;
+
+ if (ns == 0) {
+ LOG_ERROR("0 ns is not a valid parport toggling time");
+ return ERROR_FAIL;
+ }
+
+ parport_toggling_time_ns = ns;
+ wait_states = jtag_get_speed();
+ }
+
+ command_print(cmd_ctx, "parport toggling time = %" PRIu32 " ns",
+ parport_toggling_time_ns);
+
return ERROR_OK;
}
+
+static int parport_register_commands(struct command_context_s *cmd_ctx)
+{
+ register_command(cmd_ctx, NULL, "parport_port",
+ parport_handle_parport_port_command, COMMAND_CONFIG,
+ "either the address of the I/O port "
+ "or the number of the '/dev/parport' device");
+
+ register_command(cmd_ctx, NULL, "parport_cable",
+ parport_handle_parport_cable_command, COMMAND_CONFIG,
+ "the layout of the parallel port cable "
+ "used to connect to the target");
+
+ register_command(cmd_ctx, NULL, "parport_write_on_exit",
+ parport_handle_write_on_exit_command, COMMAND_CONFIG,
+ "configure the parallel driver to write "
+ "a known value to the parallel interface");
+
+ register_command(cmd_ctx, NULL, "parport_toggling_time",
+ parport_handle_parport_toggling_time_command, COMMAND_ANY,
+ "time <ns> it takes for the hardware to toggle TCK");
+
+ return ERROR_OK;
+}
+
+jtag_interface_t parport_interface = {
+ .name = "parport",
+ .register_commands = parport_register_commands,
+ .init = parport_init,
+ .quit = parport_quit,
+ .khz = parport_khz,
+ .speed_div = parport_speed_div,
+ .speed = parport_speed,
+ .execute_queue = bitbang_execute_queue,
+};
Code Review / openocd.git / blobdiff