David Brownell <david-b@pacbell.net>:

Improve the PXA255 target config:  move all that board-specific
setup to the pxa255_sst board.cfg, to which it evidently belongs
(it's the only PXA255 board now included).

Provide the PXA255 JTAG id from Intel docs, and add a comment
about how this chip is now EOL'd (last orders taken).

Note that I still can't get my old PXA255 board to work.  There's
something broken in the reset sequence, which is preventing the
TAP from coming up at all.  Old mailing list posts suggest this
is a longstanding bug...


git-svn-id: svn://svn.berlios.de/openocd/trunk@2416 b42882b7-edfa-0310-969c-e2dbd0fdcd60

2 files changed, 93 insertions, 88 deletions

diff --git a/tcl/board/pxa255_sst.cfg b/tcl/board/pxa255_sst.cfg
index 37ff1a8b..76ae4c93 100644
--- a/tcl/board/pxa255_sst.cfg
+++ b/tcl/board/pxa255_sst.cfg
@@ -8,8 +8,91 @@
 # Flash at 0x00000000
 #
 source [find target/pxa255.cfg]
+
 # Target name is set by above
 $_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x4000000 -work-area-size 0x4000 -work-area-backup 0
-# flash bank <driver> <base> <size> <chip_width> <bus_width> <targetNum> [options]
-flash bank cfi 0x00000000 0x80000 2 2 0 jedec_probe
 
+# flash bank <driver> <base> <size> <chip_width> <bus_width> <target> [options]
+flash bank cfi 0x00000000 0x80000 2 2 $_TARGETNAME jedec_probe
+
+proc pxa255_sst_init {} {
+	xscale cp15   15      0x00002001  #Enable CP0 and CP13 access
+	#
+	# setup GPIO
+	#
+	mww    0x40E00018  0x00008000  #CPSR0
+	sleep   20
+	mww    0x40E0001C  0x00000002  #GPSR1
+	sleep   20
+	mww    0x40E00020  0x00000008  #GPSR2
+	sleep   20
+	mww    0x40E0000C  0x00008000  #GPDR0
+	sleep   20
+	mww    0x40E00054  0x80000000  #GAFR0_L
+	sleep   20
+	mww    0x40E00058  0x00188010  #GAFR0_H
+	sleep   20
+	mww    0x40E0005C  0x60908018  #GAFR1_L
+	sleep   20
+	mww    0x40E0000C  0x0280E000  #GPDR0
+	sleep   20
+	mww    0x40E00010  0x821C88B2  #GPDR1
+	sleep   20
+	mww    0x40E00014  0x000F03DB  #GPDR2
+	sleep   20
+	mww    0x40E00000  0x000F03DB  #GPLR0
+	sleep   20
+
+
+	mww    0x40F00004  0x00000020  #PSSR
+	sleep   20
+
+	#
+	# setup memory controller
+	#
+	mww    0x48000008  0x01111998  #MSC0
+	sleep   20
+	mww    0x48000010  0x00047ff0  #MSC2
+	sleep   20
+	mww    0x48000014  0x00000000  #MECR
+	sleep   20
+	mww    0x48000028  0x00010504  #MCMEM0
+	sleep   20
+	mww    0x4800002C  0x00010504  #MCMEM1
+	sleep   20
+	mww    0x48000030  0x00010504  #MCATT0
+	sleep   20
+	mww    0x48000034  0x00010504  #MCATT1
+	sleep   20
+	mww    0x48000038  0x00004715  #MCIO0
+	sleep   20
+	mww    0x4800003C  0x00004715  #MCIO1
+	sleep   20
+	#
+	mww    0x48000004  0x03CA4018  #MDREF
+	sleep   20
+	mww    0x48000004  0x004B4018  #MDREF
+	sleep   20
+	mww    0x48000004  0x000B4018  #MDREF
+	sleep   20
+	mww    0x48000004  0x000BC018  #MDREF
+	sleep   20
+	mww    0x48000000  0x00001AC8  #MDCNFG
+	sleep   20
+
+	sleep   20
+
+	mww    0x48000000  0x00001AC9  #MDCNFG
+	sleep   20
+	mww    0x48000040  0x00000000  #MDMRS
+	sleep   20
+}
+
+$_TARGETNAME configure -event reset-init {pxa255_sst_init}
+
+reset_config trst_and_srst
+
+jtag_nsrst_delay 200
+jtag_ntrst_delay 200
+
+#xscale debug_handler 0  0xFFFF0800      # debug handler base address
diff --git a/tcl/target/pxa255.cfg b/tcl/target/pxa255.cfg
index c79ea4c9..93d27bd3 100644
--- a/tcl/target/pxa255.cfg
+++ b/tcl/target/pxa255.cfg
@@ -1,3 +1,6 @@
+# PXA255 chip ... originally from Intel, PXA line was sold to Marvell.
+#  This chip is now at end-of-life.  Final orders have been taken.
+
 if { [info exists CHIPNAME] } {	
    set  _CHIPNAME $CHIPNAME    
 } else {	 
@@ -13,92 +16,11 @@ if { [info exists ENDIAN] } {
 if { [info exists CPUTAPID ] } {
    set _CPUTAPID $CPUTAPID
 } else {
-  # force an error till we get a good number
-   set _CPUTAPID 0xffffffff
-}
-
-jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_CPUTAPID
-
-jtag_nsrst_delay 200
-jtag_ntrst_delay 200
-set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
-target create $_TARGETNAME xscale -endian $_ENDIAN -chain-position $_TARGETNAME -variant pxa255
-$_TARGETNAME configure -event reset-init {
-	xscale cp15   15      0x00002001  #Enable CP0 and CP13 access
-	#
-	# setup GPIO
-	#
-	mww    0x40E00018  0x00008000  #CPSR0
-	sleep   20
-	mww    0x40E0001C  0x00000002  #GPSR1
-	sleep   20
-	mww    0x40E00020  0x00000008  #GPSR2
-	sleep   20
-	mww    0x40E0000C  0x00008000  #GPDR0
-	sleep   20
-	mww    0x40E00054  0x80000000  #GAFR0_L
-	sleep   20
-	mww    0x40E00058  0x00188010  #GAFR0_H
-	sleep   20
-	mww    0x40E0005C  0x60908018  #GAFR1_L
-	sleep   20
-	mww    0x40E0000C  0x0280E000  #GPDR0
-	sleep   20
-	mww    0x40E00010  0x821C88B2  #GPDR1
-	sleep   20
-	mww    0x40E00014  0x000F03DB  #GPDR2
-	sleep   20
-	mww    0x40E00000  0x000F03DB  #GPLR0
-	sleep   20
-
-
-	mww    0x40F00004  0x00000020  #PSSR
-	sleep   20
-
-	#
-	# setup memory controller
-	#
-	mww    0x48000008  0x01111998  #MSC0
-	sleep   20
-	mww    0x48000010  0x00047ff0  #MSC2
-	sleep   20
-	mww    0x48000014  0x00000000  #MECR
-	sleep   20
-	mww    0x48000028  0x00010504  #MCMEM0
-	sleep   20
-	mww    0x4800002C  0x00010504  #MCMEM1
-	sleep   20
-	mww    0x48000030  0x00010504  #MCATT0
-	sleep   20
-	mww    0x48000034  0x00010504  #MCATT1
-	sleep   20
-	mww    0x48000038  0x00004715  #MCIO0
-	sleep   20
-	mww    0x4800003C  0x00004715  #MCIO1
-	sleep   20
-	#
-	mww    0x48000004  0x03CA4018  #MDREF
-	sleep   20
-	mww    0x48000004  0x004B4018  #MDREF
-	sleep   20
-	mww    0x48000004  0x000B4018  #MDREF
-	sleep   20
-	mww    0x48000004  0x000BC018  #MDREF
-	sleep   20
-	mww    0x48000000  0x00001AC8  #MDCNFG
-	sleep   20
-
-	sleep   20
-
-	mww    0x48000000  0x00001AC9  #MDCNFG
-	sleep   20
-	mww    0x48000040  0x00000000  #MDMRS
-	sleep   20
+   set _CPUTAPID 0x69264013
 }
 
-reset_config trst_and_srst
-
-
-
-#xscale debug_handler 0  0xFFFF0800      # debug handler base address
+jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1e -irmask 0x1f -expected-id $_CPUTAPID
 
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME xscale -endian $_ENDIAN -chain-position $_TARGETNAME
+debug_level 3