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cortex_a: add 'dacrfixup' to cortex-a command group

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work around issues with software breakpoints when the text segment
is mapped read-only by the OS. Set DACR to "all-manager" to bypass
TLB permission checks on memory access.

Change-Id: I79fd9b32b04a4d538d489896470ee30b26b72b30
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3107
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
This commit is contained in:
Matthias Welwarsky
2015-11-24 22:11:56 +01:00
committed by Andreas Fritiofson
parent 082417fc71
commit 5bee7f5b2c
3 changed files with 76 additions and 2 deletions
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doc/openocd.texi
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@@ -7678,6 +7678,13 @@ Disabled by default
display information about target caches
@end deffn
@deffn Command {cortex_a dacrfixup [@option{on}|@option{off}]}
Work around issues with software breakpoints when the program text is
mapped read-only by the operating system. This option sets the CP15 DACR
to "all-manager" to bypass MMU permission checks on memory access.
Defaults to 'off'.
@end deffn
@deffn Command {cortex_a dbginit}
Initialize core debug
Enables debug by unlocking the Software Lock and clearing sticky powerdown indications