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DANGER: committed work-in-progress to handle examination of jtag devices without IDCODE. I think this works, but I may have to pull that change out again... 

added alive_sleep() to avoid warnings when resetting target(fixes incomprehensible error timeout error messages in GDB).



git-svn-id: svn://svn.berlios.de/openocd/trunk@941 b42882b7-edfa-0310-969c-e2dbd0fdcd60
__archive__
oharboe 2008-08-19 13:55:14 +00:00
parent 0960cbeedd
commit dc33cb668d
1 changed files with 10 additions and 12 deletions
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22
src/jtag/jtag.c
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@ -1311,7 +1311,7 @@ int jtag_reset_callback(enum jtag_event event, void *priv)
void jtag_sleep(u32 us) void jtag_sleep(u32 us)
{ {
usleep(us); alive_sleep(us/1000);
} }
/* Try to examine chain layout according to IEEE 1149.1 §12 /* Try to examine chain layout according to IEEE 1149.1 §12
@ -1364,9 +1364,8 @@ int jtag_examine_chain(void)
if ((idcode & 1) == 0) if ((idcode & 1) == 0)
{ {
/* LSB must not be 0, this indicates a device in bypass */ /* LSB must not be 0, this indicates a device in bypass */
device_count++; LOG_WARNING("Device does not have IDCODE");
idcode=0;
LOG_WARNING("Device was in bypass after TRST/TMS reset");
bit_count += 1; bit_count += 1;
} }
@ -1403,13 +1402,6 @@ int jtag_examine_chain(void)
break; break;
} }
if (device)
{
device->idcode = idcode;
device = device->next;
}
device_count++;
manufacturer = (idcode & 0xffe) >> 1; manufacturer = (idcode & 0xffe) >> 1;
part = (idcode & 0xffff000) >> 12; part = (idcode & 0xffff000) >> 12;
version = (idcode & 0xf0000000) >> 28; version = (idcode & 0xf0000000) >> 28;
@ -1419,6 +1411,12 @@ int jtag_examine_chain(void)
bit_count += 32; bit_count += 32;
} }
if (device)
{
device->idcode = idcode;
device = device->next;
}
device_count++;
} }
/* see if number of discovered devices matches configuration */ /* see if number of discovered devices matches configuration */
@ -1591,7 +1589,7 @@ static int jtag_init_inner(struct command_context_s *cmd_ctx)
LOG_ERROR("Could not validate JTAG chain"); LOG_ERROR("Could not validate JTAG chain");
return ERROR_JTAG_INVALID_INTERFACE; return ERROR_JTAG_INVALID_INTERFACE;
} }
usleep(10000); alive_sleep(10);
} }
return ERROR_OK; return ERROR_OK;