pld: add support for lattice certus devices

[openocd.git] / tcl / mmr_helpers.tcl

diff --git a/tcl/mmr_helpers.tcl b/tcl/mmr_helpers.tcl
index 6b2c1476ea3852195023d03066d82c08894c8d8e..5c37fcfdc138baeb30ddc553ef43270d4a693840 100644 (file)
--- a/tcl/mmr_helpers.tcl
+++ b/tcl/mmr_helpers.tcl
@@ -1,8 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 proc proc_exists { NAME } {
     set n [info commands $NAME]
     set l [string length $n]
-    return [expr $l != 0]
+    return [expr {$l != 0}]
 }
 
 # Give: REGISTER name - must be a global variable.
@@ -52,7 +53,7 @@ proc show_mmr32_bits { NAMES VAL } {
 
        echo -n "  "
        for { set y 7 } { $y >= 0 } { incr y -1 } {
-           echo -n [format "    %d%*s | " [expr !!($VAL & (1 << ($x + $y)))] [expr {$w -1}] ""]
+           echo -n [format "    %d%*s | " [expr {!!($VAL & (1 << ($x + $y)))}] [expr {$w -1}] ""]
        }
        echo ""
     }
@@ -70,3 +71,22 @@ proc show_mmr_bitfield { MSB LSB VAL FIELDNAME FIELDVALUES } {
     }
     echo [format "%-15s: %d (0x%0*x) %s" $FIELDNAME $nval $width $nval $sval ]
 }
+
+# Give: ADDR - address of the register.
+#       BIT - bit's number.
+
+proc get_mmr_bit { ADDR BIT } {
+       set val [memread32 $ADDR]
+       set bit_val [expr {$val & [expr {1 << $BIT}]}]
+       return $bit_val
+}
+
+
+# Give: ADDR - address of the register.
+#       MSB - MSB bit's number.
+#       LSB - LSB bit's number.
+
+proc get_mmr_bitfield { ADDR MSB LSB } {
+       set rval [memread32 $ADDR]
+       return normalize_bitfield $rval $MSB $LSB
+}