- updated cortex_m3 docs regarding luminary reset behaviour

git-svn-id: svn://svn.berlios.de/openocd/trunk@625 b42882b7-edfa-0310-969c-e2dbd0fdcd60

doc/openocd.texi

@@ -596,6 +596,13 @@ ARM920t options are similar to ARM9TDMI options.
 @cindex arm966e options
 ARM966e options are similar to ARM9TDMI options.
 
+@subsection cortex_m3 options
+@cindex cortex_m3 options
+use variant <@var{variant}> @option{lm3s} when debugging luminary lm3s targets. This will cause
+openocd to use a software reset rather than asserting SRST to avoid a issue with clearing
+the debug registers. This is fixed in Fury Rev B, DustDevil Rev B, Tempest, these revisions will
+be detected and the normal reset behaviour used.
+
 @subsection xscale options
 @cindex xscale options
 Supported variants are @option{ixp42x}, @option{ixp45x}, @option{ixp46x},

src/target/cortex_m3.c

@@ -710,7 +710,7 @@ int cortex_m3_assert_reset(target_t *target)
 	 * when srst is asserted the luminary device seesm to also clear the debug registers
 	 * which does not match the armv7 debug TRM */
 		
-	if (strcmp(cortex_m3->variant, "luminary") == 0)
+	if (strcmp(cortex_m3->variant, "lm3s") == 0)
 	{
 		/* this causes the luminary device to reset using the watchdog */
 		ahbap_write_system_atomic_u32(swjdp, NVIC_AIRCR, AIRCR_VECTKEY | AIRCR_SYSRESETREQ );

src/target/target/lm3s6965.cfg

@@ -11,7 +11,7 @@ jtag_device 4 0x1 0xf 0xe
 # the luminary variant causes a software reset rather than asserting SRST
 # this stops the debug registers from being cleared
 # this will be fixed in later revisions of silicon
-target cortex_m3 little reset_halt 0 luminary
+target cortex_m3 little reset_halt 0 lm3s
 
 # 4k working area at base of ram
 working_area 0 0x20000000 0x4000 nobackup

src/target/target/lm3s811.cfg

@@ -11,7 +11,7 @@ jtag_device 4 0x1 0xf 0xe
 # the luminary variant causes a software reset rather than asserting SRST
 # this stops the debug registers from being cleared
 # this will be fixed in later revisions of silicon
-target cortex_m3 little reset_halt 0 luminary
+target cortex_m3 little reset_halt 0 lm3s
 
 # 2k working area at base of ram
 working_area 0 0x20000000 0x2000 nobackup