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JLink support for non-7-cycle state moves by Dick Hollenbeck <dick@softplc.com> 

git-svn-id: svn://svn.berlios.de/openocd/trunk@1826 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
kc8apf 2009-05-18 17:42:36 +00:00
parent 9a990a3591
commit 10923655d6
1 changed files with 10 additions and 4 deletions
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14
src/jtag/jlink.c
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@ -39,6 +39,11 @@
#define JLINK_USB_TIMEOUT 1000
// See Section 1.3.2 of the Segger JLink USB protocol manual
/* 2048 is the max value we can use here */
//#define JLINK_TAP_BUFFER_SIZE 2048
#define JLINK_TAP_BUFFER_SIZE 256
//#define JLINK_TAP_BUFFER_SIZE 384
#define JLINK_IN_BUFFER_SIZE 2048
#define JLINK_OUT_BUFFER_SIZE 2*2048+4
#define JLINK_EMU_RESULT_BUFFER_SIZE 64
@ -412,6 +417,8 @@ static void jlink_runtest(int num_cycles)
tap_state_t saved_end_state = tap_get_end_state();
jlink_tap_ensure_space(1,num_cycles + 16);
/* only do a state_move when we're not already in IDLE */
if (tap_get_state() != TAP_IDLE)
{
@ -438,7 +445,7 @@ static void jlink_scan(bool ir_scan, enum scan_type type, u8 *buffer, int scan_s
{
tap_state_t saved_end_state;
jlink_tap_ensure_space(1, scan_size + 8);
jlink_tap_ensure_space(1, scan_size + 16);
saved_end_state = tap_get_end_state();
@ -604,8 +611,6 @@ static int jlink_handle_jlink_info_command(struct command_context_s *cmd_ctx, ch
/***************************************************************************/
/* J-Link tap functions */
/* 2048 is the max value we can use here */
#define JLINK_TAP_BUFFER_SIZE 1024
static unsigned tap_length=0;
static u8 tms_buffer[JLINK_TAP_BUFFER_SIZE];
@ -634,7 +639,7 @@ static void jlink_tap_init(void)
static void jlink_tap_ensure_space(int scans, int bits)
{
int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
int available_bits = JLINK_TAP_BUFFER_SIZE * 8 - tap_length - 64;
int available_bits = JLINK_TAP_BUFFER_SIZE * 8 - tap_length - 32;
if (scans > available_scans || bits > available_bits)
{
@ -649,6 +654,7 @@ static void jlink_tap_append_step(int tms, int tdi)
if (index >= JLINK_TAP_BUFFER_SIZE)
{
LOG_ERROR("jlink_tap_append_step: overflow");
*(u32 *)0xFFFFFFFF = 0;
exit(-1);
}