X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=tcl%2Ftarget%2Fstm32f7x.cfg;h=6ad4b65f8f568dd5b07063b9842000a67456d54a;hb=a80650ac3c7f0f1de3b5d1e45ce03d0ccc3d288e;hp=562de30f6a1eb23e4f968351f733e93c591ea7a9;hpb=98a07154bc588d40b16f4f07b70937133f55e97e;p=fw%2Fopenocd

diff --git a/tcl/target/stm32f7x.cfg b/tcl/target/stm32f7x.cfg
old mode 100755
new mode 100644
index 562de30f6..6ad4b65f8
--- a/tcl/target/stm32f7x.cfg
+++ b/tcl/target/stm32f7x.cfg
@@ -49,22 +49,47 @@ $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE
 
 set _FLASHNAME $_CHIPNAME.flash
 flash bank $_FLASHNAME stm32f2x 0 0 0 0 $_TARGETNAME
+flash bank $_CHIPNAME.otp stm32f2x 0x1ff0f000 0 0 0 $_TARGETNAME
+
+# On the STM32F7, the Flash is mapped at address 0x08000000 via the AXI and
+# also address 0x00200000 via the ITCM. The former mapping is read-write in
+# hardware, while the latter is read-only. By presenting an alias, we
+# accomplish two things:
+# (1) We allow writing at 0x00200000 (because the alias acts identically to the
+#     original bank), which allows code intended to run from that address to
+#     also be linked for loading at that address, simplifying linking.
+# (2) We allow the proper memory map to be delivered to GDB, which will cause
+#     it to use hardware breakpoints at the 0x00200000 mapping (correctly
+#     identifying it as Flash), which it would otherwise not do. Configuring
+#     the Flash via ITCM alias as virtual
+flash bank $_CHIPNAME.itcm-flash.alias virtual 0x00200000 0 0 0 $_TARGETNAME $_FLASHNAME
 
 # adapter speed should be <= F_CPU/6. F_CPU after reset is 16MHz, so use F_JTAG = 2MHz
-adapter_khz 2000
+adapter speed 2000
 
-adapter_nsrst_delay 100
+adapter srst delay 100
 if {[using_jtag]} {
  jtag_ntrst_delay 100
 }
 
-# use hardware reset, connect under reset
+# Use hardware reset.
+#
+# This target is compatible with connect_assert_srst, which may be set in a
+# board file.
 reset_config srst_only srst_nogate
 
 if {![using_hla]} {
    # if srst is not fitted use SYSRESETREQ to
    # perform a soft reset
    cortex_m reset_config sysresetreq
+
+   # Set CSW[27], which according to ARM ADI v5 appendix E1.4 maps to AHB signal
+   # HPROT[3], which according to AMBA AHB/ASB/APB specification chapter 3.7.3
+   # makes the data access cacheable. This allows reading and writing data in the
+   # CPU cache from the debugger, which is far more useful than going straight to
+   # RAM when operating on typical variables, and is generally no worse when
+   # operating on special memory locations.
+   $_CHIPNAME.dap apcsw 0x08000000 0x08000000
 }
 
 $_TARGETNAME configure -event examine-end {
@@ -137,11 +162,11 @@ $_TARGETNAME configure -event reset-init {
 	if {[using_jtag]} {
 		[[target current] cget -dap] memaccess 16
 	} {
-		adapter_khz 8000
+		adapter speed 8000
 	}
 }
 
 $_TARGETNAME configure -event reset-start {
 	# Reduce speed since CPU speed will slow down to 16MHz with the reset
-	adapter_khz 2000
+	adapter speed 2000
 }