src/flash/nor: flash driver for RSL10

Add new flash driver for internal flash of onsemi RSL10 device.

Valgrind-clean. Clang AddressSanitizer shows no errors.

Signed-off-by: Toms Stūrmanis <toms.sturmanis@gmail.com>
Change-Id: I8030542cb9805e94f56d7a69404cef5d88d6dd5a
Reviewed-on: https://review.openocd.org/c/openocd/+/7115
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

tcl/target/rsl10.cfg

@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+#
+# RSL10: ARM Cortex-M3
+#
+
+source [find target/swj-dp.tcl]
+
+if { [info exists CHIPNAME] } {
+	set _CHIPNAME $CHIPNAME
+} else {
+	set _CHIPNAME rsl10
+}
+
+if { [info exists WORKAREASIZE] } {
+   set _WORKAREASIZE $WORKAREASIZE
+} else {
+   set _WORKAREASIZE 0x8000
+}
+
+if { [info exists CPUTAPID] } {
+	set _CPUTAPID $CPUTAPID
+} else {
+	set _CPUTAPID 0x2ba01477
+}
+
+swj_newdap $_CHIPNAME cpu -expected-id $_CPUTAPID
+dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME cortex_m -dap $_CHIPNAME.dap
+
+$_TARGETNAME configure -work-area-phys 0x200000 -work-area-size $_WORKAREASIZE -work-area-backup 0
+
+# TODO: configure reset
+# reset_config srst_only srst_nogate connect_assert_srst
+
+$_TARGETNAME configure -event examine-fail rsl10_lock_warning
+
+proc rsl10_check_connection {} {
+    set target [target current]
+    set dap [$target cget -dap]
+
+	set IDR [$dap apreg 0 0xfc]
+	if {$IDR != 0x24770011} {
+		echo "Error: Cannot access RSL10 AP, maybe connection problem!"
+		return 1
+	}
+    return 0
+}
+
+proc rsl10_lock_warning {} {
+    if {[rsl10_check_connection]} {return}
+
+    poll off
+    echo "****** WARNING ******"
+    echo "RSL10 device probably has lock engaged."
+    echo "Debug access is denied."
+    echo "Use 'rsl10 unlock key1 key2 key3 key4' to erase and unlock the device."
+    echo "****** ....... ******"
+    echo ""
+}
+
+flash bank $_CHIPNAME.main rsl10 0x00100000 0x60000 0 0 $_TARGETNAME
+flash bank $_CHIPNAME.nvr1 rsl10 0x00080000 0x800 0 0 $_TARGETNAME
+flash bank $_CHIPNAME.nvr2 rsl10 0x00080800 0x800 0 0 $_TARGETNAME
+flash bank $_CHIPNAME.nvr3 rsl10 0x00081000 0x800 0 0 $_TARGETNAME
+
+# TODO: implement flashing for nvr4
+# flash bank $_CHIPNAME.nvr4 rsl10 0x00081800 0x400 0 0 $_TARGETNAME