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- replaced JLINK_xxxx command defines by EMU_CMD_ from the 

J-Link USB Protocol specification
- added functionality to jlink_init to display the version.

git-svn-id: svn://svn.berlios.de/openocd/trunk@675 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
mifi 2008-05-24 07:11:18 +00:00
parent 155c3d763c
commit 209112000b
1 changed files with 58 additions and 27 deletions
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85
src/jtag/jlink.c
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@ -59,16 +59,19 @@ static u8 usb_in_buffer[JLINK_IN_BUFFER_SIZE];
static u8 usb_out_buffer[JLINK_OUT_BUFFER_SIZE];
/* Constants for JLink command */
#define JLINK_FIRMWARE_VERSION 0x01
#define JLINK_SPEED_COMMAND 0x05
#define JLINK_GET_STATUS_COMMAND 0x07
/* The JLINK_TAP_SEQUENCE_COMMAND is obsolete *
/* and we should use EMU_CMD_HW_JTAG instead */
#define JLINK_TAP_SEQUENCE_COMMAND 0xcd
#define JLINK_GET_SERIAL 0xe6
#define JLINK_SET_SRST_LOW_COMMAND 0xdc
#define JLINK_SET_SRST_HIGH_COMMAND 0xdd
#define JLINK_SET_TRST_LOW_COMMAND 0xde
#define JLINK_SET_TRST_HIGH_COMMAND 0xdf
#define JLINK_HARDWARE_VERSION 0xe8
#define EMU_CMD_VERSION 0x01
#define EMU_CMD_SET_SPEED 0x05
#define EMU_CMD_GET_STATE 0x07
#define EMU_CMD_HW_JTAG 0xcf
#define EMU_CMD_HW_RESET0 0xdc
#define EMU_CMD_HW_RESET1 0xdd
#define EMU_CMD_HW_TRST0 0xde
#define EMU_CMD_HW_TRST1 0xdf
/* max speed 12MHz v5.0 jlink */
#define JLINK_MAX_SPEED 12000
@ -244,7 +247,7 @@ int jlink_speed(int speed)
if (speed == 0)
speed = -1;
usb_out_buffer[0] = JLINK_SPEED_COMMAND;
usb_out_buffer[0] = EMU_CMD_SET_SPEED;
usb_out_buffer[1] = (speed >> 0) & 0xff;
usb_out_buffer[2] = (speed >> 8) & 0xff;
@ -285,6 +288,8 @@ int jlink_register_commands(struct command_context_s *cmd_ctx)
int jlink_init(void)
{
int result;
int len;
int check_cnt;
jlink_jtag_handle = jlink_usb_open();
@ -294,20 +299,46 @@ int jlink_init(void)
return ERROR_JTAG_INIT_FAILED;
}
result = jlink_usb_read(jlink_jtag_handle);
if (result != 2 || usb_in_buffer[0] != 0x07 || usb_in_buffer[1] != 0x00)
{
LOG_INFO("J-Link initial read failed, don't worry");
}
check_cnt = 0;
while (check_cnt < 3)
{
/* query hardware version */
jlink_simple_command(EMU_CMD_VERSION);
result = jlink_usb_read(jlink_jtag_handle);
if (result == 2)
{
/* Get length */
len = buf_get_u32(usb_in_buffer, 0, 16);
/* Get version */
result = jlink_usb_read(jlink_jtag_handle);
if(result == len)
{
usb_in_buffer[result] = 0;
LOG_INFO(usb_in_buffer);
/* attempt to get status */
jlink_get_status();
break;
}
}
check_cnt++;
}
if (check_cnt == 3)
{
LOG_INFO("J-Link initial read failed, don't worry");
}
LOG_INFO("J-Link JTAG Interface ready");
jlink_reset(0, 0);
jlink_tap_init();
/* query jlink status */
jlink_get_status();
return ERROR_OK;
}
@ -437,20 +468,20 @@ void jlink_reset(int trst, int srst)
/* Signals are active low */
if (trst == 0)
{
jlink_simple_command(JLINK_SET_TRST_HIGH_COMMAND);
jlink_simple_command(EMU_CMD_HW_TRST1);
}
else if (trst == 1)
{
jlink_simple_command(JLINK_SET_TRST_LOW_COMMAND);
jlink_simple_command(EMU_CMD_HW_TRST0);
}
if (srst == 0)
{
jlink_simple_command(JLINK_SET_SRST_HIGH_COMMAND);
jlink_simple_command(EMU_CMD_HW_RESET1);
}
else if (srst == 1)
{
jlink_simple_command(JLINK_SET_SRST_LOW_COMMAND);
jlink_simple_command(EMU_CMD_HW_RESET0);
}
}
@ -473,7 +504,7 @@ int jlink_get_status(void)
{
int result;
jlink_simple_command(JLINK_GET_STATUS_COMMAND);
jlink_simple_command(EMU_CMD_GET_STATE);
result = jlink_usb_read(jlink_jtag_handle);
if(result == 8)
@ -491,7 +522,7 @@ int jlink_get_status(void)
}
else
{
LOG_ERROR("J-Link command JLINK_GET_STATUS_COMMAND failed (%d)\n", result);
LOG_ERROR("J-Link command EMU_CMD_GET_STATE failed (%d)\n", result);
}
return ERROR_OK;
@ -503,7 +534,7 @@ int jlink_handle_jlink_info_command(struct command_context_s *cmd_ctx, char *cmd
int len = 0;
/* query hardware version */
jlink_simple_command(JLINK_FIRMWARE_VERSION);
jlink_simple_command(EMU_CMD_VERSION);
result = jlink_usb_read(jlink_jtag_handle);
if (result == 2)
@ -522,7 +553,7 @@ int jlink_handle_jlink_info_command(struct command_context_s *cmd_ctx, char *cmd
}
else
{
LOG_ERROR("J-Link command JLINK_FIRMWARE_VERSION failed (%d)\n", result);
LOG_ERROR("J-Link command EMU_CMD_VERSION failed (%d)\n", result);
}
return ERROR_OK;