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arm_adi_v5: Add ability to ignore the CSYSPWRUPACK bit

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The CTRL/STAT register in the ARM DAP DP has a debug power up
ack bit and a system power up ack bit. Some devices do not set
the system power up ack bit until sometime later. To avoid having
the initial target examination fail due to this or to have a
sticky bit error report claim power failure due to this a user
can now specify that this bit should be ignored.

Change-Id: I2451234bbe904984e29562ef6f616cc6d6f60732
Signed-off-by: Eric Katzfey <eric.katzfey@mentalbee.com>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/3710
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
This commit is contained in:
Matthias Welwarsky
2018-04-03 19:13:40 +02:00
committed by Matthias Welwarsky
parent be87994d60
commit 0dba1815e6
5 changed files with 38 additions and 10 deletions
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17
doc/openocd.texi
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@@ -3779,6 +3779,11 @@ a TAP doesn't conform to the JTAG specification.
to verify that instruction scans work correctly.
Such scans are not used by OpenOCD except to verify that
there seems to be no problems with JTAG scan chain operations.
@item @code{-ignore-syspwrupack}
@*Specify this to ignore the CSYSPWRUPACK bit in the ARM DAP DP CTRL/STAT
register during initial examination and when checking the sticky error bit.
This bit is normally checked after setting the CSYSPWRUPREQ bit, but some
devices do not set the ack bit until sometime later.
@end itemize
@end deffn
@@ -4014,11 +4019,21 @@ instead of "@option{-chain-position} @var{dotted.name}" when the target is creat
The @command{dap} command group supports the following sub-commands:
@deffn Command {dap create} dap_name @option{-chain-position} dotted.name
@deffn Command {dap create} dap_name @option{-chain-position} dotted.name configparams...
Declare a DAP instance named @var{dap_name} linked to the JTAG tap
@var{dotted.name}. This also creates a new command (@command{dap_name})
which is used for various purposes including additional configuration.
There can only be one DAP for each JTAG tap in the system.
A DAP may also provide optional @var{configparams}:
@itemize @bullet
@item @code{-ignore-syspwrupack}
@*Specify this to ignore the CSYSPWRUPACK bit in the ARM DAP DP CTRL/STAT
register during initial examination and when checking the sticky error bit.
This bit is normally checked after setting the CSYSPWRUPREQ bit, but some
devices do not set the ack bit until sometime later.
@end itemize
@end deffn
@deffn Command {dap names}