This is an automated email from Gerrit.
Felipe Balbi (ba...@ti.com) just uploaded a new patch set to Gerrit, which you
can find at http://openocd.zylin.com/2615
-- gerrit
commit 8e6abd4b1d4bc33426ce88aeab988d159097dde1
Author: Felipe Balbi <ba...@ti.com>
Date: Sun Mar 15 23:15:15 2015 -0500
tcl: am437x: disable watchdog on reset-end
sometimes, watchdog might be left running and
it could expire in the middle of a debug session,
to prevent that, just make sure to disable watchdog
on reset-end if current state is 'halted'.
Change-Id: Ib4f2a2321cba17cd8c56ca3ae63114a563a6de90
Tested-by: Tom Rini <tr...@konsulko.com>
Signed-off-by: Felipe Balbi <ba...@ti.com>
diff --git a/tcl/target/am437x.cfg b/tcl/target/am437x.cfg
index d7d4753..ee62ef9 100644
--- a/tcl/target/am437x.cfg
+++ b/tcl/target/am437x.cfg
@@ -1,4 +1,5 @@
source [find target/icepick.cfg]
+source [find mem_helper.tcl]
###############################################################################
## AM437x Registers ##
@@ -481,3 +482,31 @@ target create $_TARGETNAME cortex_a -chain-position
$_CHIPNAME.dap -dbgbase 0x80
# SRAM: 256K at 0x4030.0000
$_TARGETNAME configure -work-area-phys 0x40300000 -work-area-size 0x40000
+
+# Disables watchdog timer after reset otherwise board won't stay in
+# halted state.
+proc disable_watchdog { } {
+ global WDT1_WSPR
+ global WDT1_W_PEND_WSPR
+ global _TARGETNAME
+
+ set curstate [$_TARGETNAME curstate]
+
+ if { [string compare $curstate halted] == 0 } {
+ set WDT_DISABLE_SEQ1 0xaaaa
+ set WDT_DISABLE_SEQ2 0x5555
+
+ mww phys $WDT1_WSPR $WDT_DISABLE_SEQ1
+
+ # Empty body to make sure this executes as fast as possible.
+ # We don't want any delays here otherwise romcode might start
+ # executing and end up changing state of certain IPs.
+ while { [expr [mrw $WDT1_W_PEND_WSPR] & 0x10] } { }
+
+ mww phys $WDT1_WSPR $WDT_DISABLE_SEQ2
+ while { [expr [mrw $WDT1_W_PEND_WSPR] & 0x10] } { }
+ }
+}
+
+$_TARGETNAME configure -event reset-start { adapter_khz 1000 }
+$_TARGETNAME configure -event reset-end { disable_watchdog }
--
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