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short story: if the JTAG clock is too high, then the
behavior will be flaky and kludging the code may
seem to make things beter, but really it's just a red
herring.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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normal code should not call jtag_get_error(), but rather check
the return code from jtag_execute_queue().
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Add "static" qualifier to private data.
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
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Voila! This get rids of mysteries about what what
state the TAP is in.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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So don't use the name "swjdp" for all DAPs; rename to
plain old "dap", which *is* always correct.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
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Less global variables....
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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jtag_get/set_end_state() is now deprecated.
There were lots of places in the code where the end state was
unintentionally modified.
The big Q is whether there were any places where the intention
was to modify the end state. 0.5 is a long way off, so we'll
get a fair amount of testing.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Unclutter arm_adi_v5.c by moving most transport-specific code
to a transport-specific files adi_v5_{jtag,swd}.c ... it's not
a full cleanup, because of some issues which need to be addressed
as part of SWD support (along with implementing the DAP operations
on top of SWD transport):
- The mess where mem_ap_read_buf_u32() is currently coded to
know about JTAG scan chains, and thus needs rewriting before
it will work with SWD;
- Initialization is still JTAG-specific
Also move JTAG_{DP,ACK}_* constants from adi_v5.h to the JTAG
file; no other code should care about those values.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
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