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authorMatthias Welwarsky <matthias@welwarsky.de>2015-11-24 22:11:56 +0100
committerAndreas Fritiofson <andreas.fritiofson@gmail.com>2015-12-29 21:43:45 +0000
commit5bee7f5b2c13b02f2d6ad98de6a826279777c8a9 (patch)
tree43d9fb492e2e8604a8df9db93148b3223d4c8570 /doc
parent082417fc71d5aa7b4e85b5244e53acd434c794fd (diff)
cortex_a: add 'dacrfixup' to cortex-a command group
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>
Diffstat (limited to 'doc')
-rw-r--r--doc/openocd.texi7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi
index 86415319..78298b86 100644
--- a/doc/openocd.texi
+++ b/doc/openocd.texi
@@ -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