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dsp563xx_once: Correct wrong return value on jtag communication errors 

This patch change the return value on a jtag communication error
to TARGET_UNKNOWN because this function should return the current
target status and not a error code from the underlying api call.
Also the validity of the jtag_status is extended to all static
bits in this value.
This commit is contained in:
Mathias K 2011-02-17 09:05:42 +01:00 committed by Øyvind Harboe
parent 0f863ecb01
commit b7163f534a
1 changed files with 9 additions and 9 deletions
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18
src/target/dsp563xx_once.c
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@ -29,6 +29,9 @@
#include "dsp563xx.h"
#include "dsp563xx_once.h"
#define JTAG_STATUS_STATIC_MASK 0x03
#define JTAG_STATUS_STATIC_VALUE 0x01
#define JTAG_STATUS_NORMAL 0x01
#define JTAG_STATUS_STOPWAIT 0x05
#define JTAG_STATUS_BUSY 0x09
@ -100,19 +103,16 @@ int dsp563xx_once_target_status(struct jtag_tap *tap)
uint8_t jtag_status;
if ((err = dsp563xx_jtag_sendinstr(tap, &jtag_status, JTAG_INSTR_ENABLE_ONCE)) != ERROR_OK)
return err;
if ((err = jtag_execute_queue()) != ERROR_OK)
return err;
if ((jtag_status & 1) != 1)
{
return TARGET_UNKNOWN;
}
if ((err = jtag_execute_queue()) != ERROR_OK)
return TARGET_UNKNOWN;
/* verify correct static status pattern */
if ( (jtag_status & JTAG_STATUS_STATIC_MASK) != JTAG_STATUS_STATIC_VALUE )
return TARGET_UNKNOWN;
if (jtag_status != JTAG_STATUS_DEBUG)
{
return TARGET_RUNNING;
}
return TARGET_HALTED;
}