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adi_v5_jtag: clear sticky overrun error 

By accessing invalid AP in JTAG mode, it's possible to trigger the
error:
	JTAG-DP STICKY ERROR
After that the sticky error is never cleared and the whole DAP
gets not anymore accessible.

Clean-up the sticky error once detected.

Change-Id: I8b07263b30f9e46645f0c29084b8f1626e241f45
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6430
Tested-by: jenkins
This commit is contained in:
Antonio Borneo 2021-08-06 23:37:23 +02:00
parent 513aba1930
commit edb575800a
1 changed files with 2 additions and 2 deletions
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4
src/target/adi_v5_jtag.c
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@ -633,10 +633,10 @@ static int jtagdp_transaction_endcheck(struct adiv5_dap *dap)
if (ctrlstat & SSTICKYORUN)
LOG_DEBUG("JTAG-DP STICKY OVERRUN");
/* Clear Sticky Error Bits */
/* Clear Sticky Error and Sticky Overrun Bits */
retval = adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
DP_CTRL_STAT, DPAP_WRITE,
dap->dp_ctrl_stat | SSTICKYERR, NULL, 0);
dap->dp_ctrl_stat | SSTICKYERR | SSTICKYORUN, NULL, 0);
if (retval != ERROR_OK)
goto done;