From edefee988045558d5d306453ce352dc06bcb7a03 Mon Sep 17 00:00:00 2001
From: Antonio Borneo <borneo.antonio@gmail.com>
Date: Tue, 21 Sep 2010 16:06:37 +0800
Subject: TCL scripts: collect duplicated procedures

TCL procedures mrw and mmw, originally in DaVinci target code,
are duplicated in other TCL scripts.
Moved in a common helper file, and added help/usage description.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
---
 tcl/mem_helper.tcl        | 22 ++++++++++++++++++++++
 tcl/target/c100helper.tcl | 16 +---------------
 tcl/target/davinci.cfg    | 15 +--------------
 tcl/target/stellaris.cfg  |  7 +------
 4 files changed, 25 insertions(+), 35 deletions(-)
 create mode 100644 tcl/mem_helper.tcl

diff --git a/tcl/mem_helper.tcl b/tcl/mem_helper.tcl
new file mode 100644
index 00000000..d8114908
--- /dev/null
+++ b/tcl/mem_helper.tcl
@@ -0,0 +1,22 @@
+# Helper for common memory read/modify/write procedures
+
+# mrw: "memory read word", returns value of $reg
+proc mrw {reg} {
+	set value ""
+	ocd_mem2array value 32 $reg 1
+	return $value(0)
+}
+
+add_usage_text mrw "address"
+add_help_text mrw "Returns value of word in memory."
+
+# mmw: "memory modify word", updates value of $reg
+#       $reg <== ((value & ~$clearbits) | $setbits)
+proc mmw {reg setbits clearbits} {
+	set old [mrw $reg]
+	set new [expr ($old & ~$clearbits) | $setbits]
+	mww $reg $new
+}
+
+add_usage_text mmw "address setbits clearbits"
+add_help_text mmw "Modify word in memory. new_val = (old_val & ~clearbits) | setbits;"
diff --git a/tcl/target/c100helper.tcl b/tcl/target/c100helper.tcl
index 45adc62c..32510660 100644
--- a/tcl/target/c100helper.tcl
+++ b/tcl/target/c100helper.tcl
@@ -25,13 +25,7 @@ proc helpC100 {} {
     puts "22) flashUBOOT:        will prgram NOR sectors 0-3 with u-boot.bin"
 }
 
-# mrw,mmw from davinci.cfg
-# mrw: "memory read word", returns value of $reg
-proc mrw {reg} {
-    set value ""
-    mem2array value 32 $reg 1
-    return $value(0)
-}
+source [find mem_helper.tcl]
 
 # read a 64-bit register (memory mapped)
 proc mr64bit {reg} {
@@ -50,14 +44,6 @@ proc mw64bit {reg value} {
     mww [expr $reg+4] $high
 }
 
-# mmw: "memory modify word", updates value of $reg
-#	$reg <== ((value & ~$clearbits) | $setbits)
-proc mmw {reg setbits clearbits} {
-    set old [mrw $reg]
-    set new [expr ($old & ~$clearbits) | $setbits]
-    mww $reg $new
-}
-
 
 proc showNOR {} {
     puts "This is the current NOR setup"
diff --git a/tcl/target/davinci.cfg b/tcl/target/davinci.cfg
index 6e9091e5..9e9369dc 100644
--- a/tcl/target/davinci.cfg
+++ b/tcl/target/davinci.cfg
@@ -7,20 +7,7 @@ proc davinci_pinmux {soc reg value} {
 	mww [expr [dict get $soc sysbase] + 4 * $reg] $value
 }
 
-# mrw: "memory read word", returns value of $reg
-proc mrw {reg} {
-	set value ""
-	mem2array value 32 $reg 1
-	return $value(0)
-}
-
-# mmw: "memory modify word", updates value of $reg
-#	$reg <== ((value & ~$clearbits) | $setbits)
-proc mmw {reg setbits clearbits} {
-	set old [mrw $reg]
-	set new [expr ($old & ~$clearbits) | $setbits]
-	mww $reg $new
-}
+source [find mem_helper.tcl]
 
 #
 # pll_setup: initialize PLL
diff --git a/tcl/target/stellaris.cfg b/tcl/target/stellaris.cfg
index 6ba5f14a..b663ce3d 100644
--- a/tcl/target/stellaris.cfg
+++ b/tcl/target/stellaris.cfg
@@ -46,12 +46,7 @@ $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE
 # this, if you're using a slower clock.
 adapter_khz 500
 
-# mrw: "memory read word", returns value of $reg
-proc mrw {reg} {
-	set value ""
-	mem2array value 32 $reg 1
-	return $value(0)
-}
+source [find mem_helper.tcl]
 
 $_TARGETNAME configure -event reset-start {
 	adapter_khz 500
-- 
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