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authoroharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2008-08-14 13:41:14 +0000
committeroharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2008-08-14 13:41:14 +0000
commita42f85fe9a52c295b9e5a629f6701c6ac899207a (patch)
tree403c6672d946048c617d55d57a167c298142b314 /doc
parent8858bf41dea7197d4dac485a2cd1b006868fc0fd (diff)
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documentation wip for upcoming patch.
git-svn-id: svn://svn.berlios.de/openocd/trunk@918 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Diffstat (limited to 'doc')
-rw-r--r--doc/openocd.texi26
1 files changed, 11 insertions, 15 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi
index f2cbfa42..80bb33ec 100644
--- a/doc/openocd.texi
+++ b/doc/openocd.texi
@@ -12,6 +12,7 @@
@copying
Copyright @copyright{} 2007-2008 Spen @email{spen@@spen-soft.co.uk}
+Copyright @copyright{} 2008 Oyvind Harboe @email{oyvind.harboe@@zylin.com}
@quotation
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.2 or
@@ -1054,15 +1055,6 @@ The target is resumed in the currently set @option{core_mode}.
These commands are specific to ARM7 and ARM9 targets, like ARM7TDMI, ARM720t,
ARM920t or ARM926EJ-S.
@itemize @bullet
-@item @b{arm7_9 sw_bkpts} <@var{enable}|@var{disable}>
-@cindex arm7_9 sw_bkpts
-Enable/disable use of software breakpoints. On ARMv4 systems, this reserves
-one of the watchpoint registers to implement software breakpoints. Disabling
-SW Bkpts frees that register again.
-@item @b{arm7_9 force_hw_bkpts} <@var{enable}|@var{disable}>
-@cindex arm7_9 force_hw_bkpts
-When @option{force_hw_bkpts} is enabled, the @option{sw_bkpts} support is disabled, and all
-breakpoints are turned into hardware breakpoints.
@item @b{arm7_9 dbgrq} <@var{enable}|@var{disable}>
@cindex arm7_9 dbgrq
Enable use of the DBGRQ bit to force entry into debug mode. This should be
@@ -1314,7 +1306,7 @@ working area.
Informing gdb of the memory map of the target will enable gdb to protect any
flash area of the target and use hardware breakpoints by default. This means
-that the OpenOCD option @option{arm7_9 force_hw_bkpts} is not required when
+that the OpenOCD option @option{gdb_breakpoint_override} is not required when
using a memory map.
To view the configured memory map in gdb, use the gdb command @option{info mem}
@@ -1455,6 +1447,14 @@ use @option{flash write_image} command passing @option{erase} as the first param
this config option has been removed, simply adding @option{init} and @option{reset halt} to
the end of your config script will give the same behaviour as using @option{daemon_startup reset}
and @option{target cortex_m3 little reset_halt 0}.
+@item @b{arm7_9 sw_bkpts}
+@cindex arm7_9 sw_bkpts
+On by default. See also @option{gdb_breakpoint_override}.
+@item @b{arm7_9 force_hw_bkpts}
+@cindex arm7_9 force_hw_bkpts
+Use @option{gdb_breakpoint_override} instead. Note that GDB will use hardware breakpoints
+for flash if the gdb memory map has been set up(default when flash is declared in
+target configuration).
@item @b{run_and_halt_time}
@cindex run_and_halt_time
This command has been removed for simpler reset behaviour, it can be simulated with the
@@ -1482,11 +1482,7 @@ arm7_9_add_breakpoint(): sw breakpoint requested, but software breakpoints not e
GDB issues software breakpoints when a normal breakpoint is requested, or to implement
source-line single-stepping. On ARMv4T systems, like ARM7TDMI, ARM720t or ARM920t,
-software breakpoints consume one of the two available hardware breakpoints,
-and are therefore disabled by default. If your code is running from RAM, you
-can enable software breakpoints with the @option{arm7_9 sw_bkpts enable} command. If
-your code resides in Flash, you can't use software breakpoints, but you can force
-OpenOCD to use hardware breakpoints instead: @option{arm7_9 force_hw_bkpts enable}.
+software breakpoints consume one of the two available hardware breakpoints.
@item When erasing or writing LPC2000 on-chip flash, the operation fails sometimes
and works sometimes fine.