Hi,
I did some work on the IXP42x config files, adding more known TAP IDs plus
some helper functions and constants to make board config files simpler and
easier to read.
I have seen 3 of the 6 listed TAP IDs on real hardware, and the others are
inferred from the documentation. There might be three more for rev. A0
silicon, which I do not have and which is probably quite rare except on some
eval boards.
Since my TCL knowledge is basically zero, I am looking for suggestions how
to improve this - for example, are those repeated "global" statements really
necessary?
cu
Michael
>From 6da9b215b386714a61472665c642f31f726a6b37 Mon Sep 17 00:00:00 2001
From: Michael Schwingen <mich...@schwingen.org>
Date: Thu, 16 Dec 2010 23:48:12 +0100
Subject: [PATCH] update IXP42x target / XBA board config
---
tcl/board/actux3.cfg | 48 +++++++++++++++++++++++
tcl/target/ixp42x.cfg | 96 ++++++++++++++++++++++++++++++++++++++++++----
tcl/target/xba_revA3.cfg | 88 ------------------------------------------
3 files changed, 136 insertions(+), 96 deletions(-)
create mode 100644 tcl/board/actux3.cfg
delete mode 100644 tcl/target/xba_revA3.cfg
diff --git a/tcl/board/actux3.cfg b/tcl/board/actux3.cfg
new file mode 100644
index 0000000..efdd702
--- /dev/null
+++ b/tcl/board/actux3.cfg
@@ -0,0 +1,48 @@
+# board config file for AcTux3/XBA IXP42x board
+# Date: 2010-12-16
+# Author: Michael Schwingen <mich...@schwingen.org>
+
+reset_config trst_and_srst separate
+
+adapter_nsrst_delay 100
+jtag_ntrst_delay 100
+
+source [find target/ixp42x.cfg]
+
+$_TARGETNAME configure -work-area-phys 0x00020000 -work-area-size 0x10000
-work-area-backup 0
+
+$_TARGETNAME configure -event reset-init { init_actux3 }
+
+proc init_actux3 { } {
+ ##########################################################################
+ # setup expansion bus CS
+ ##########################################################################
+ mww 0xc4000000 0xbd113842 #CS0 : Flash, write enabled @0x50000000
+ mww 0xc4000004 0x94d10013 #CS1
+ mww 0xc4000008 0x95960003 #CS2
+ mww 0xc400000c 0x00000000 #CS3
+ mww 0xc4000010 0x80900003 #CS4
+ mww 0xc4000014 0x9d520003 #CS5
+ mww 0xc4000018 0x81860001 #CS6
+ mww 0xc400001c 0x80900003 #CS7
+
+ global IXP42x_SDRAM_64MB_16Mx16_1BANK
+ ixp42x_init_sdram $IXP42x_SDRAM_64MB_16Mx16_1BANK 2100 3
+
+ #mww 0xc4000020 0xffffee # CFG0: remove expansion bus boot flash mirror
at 0x00000000
+
+ ixp42x_set_bigendian
+
+ flash probe 0
+}
+
+proc flash_boot { {FILE "/tftpboot/actux3/u-boot.bin"} } {
+ echo [format "writing bootloader: %s" $FILE ]
+ flash write_image erase $FILE 0x50000000 bin
+}
+
+set _FLASHNAME $_CHIPNAME.flash
+flash bank $_FLASHNAME cfi 0x50000000 0x400000 2 2 $_TARGETNAME
+
+init
+reset init
diff --git a/tcl/target/ixp42x.cfg b/tcl/target/ixp42x.cfg
index 6d2ecb7..9dcaca5 100644
--- a/tcl/target/ixp42x.cfg
+++ b/tcl/target/ixp42x.cfg
@@ -1,6 +1,5 @@
#xscale ixp42x CPU
-
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
@@ -17,16 +16,97 @@ if { [info exists ENDIAN] } {
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
- # force an error till we get a good number
- set _CPUTAPID 0xffffffff
+ set _CPUTAPID 0x19274013
}
+set _CPUTAPID2 0x19275013
+set _CPUTAPID3 0x19277013
+set _CPUTAPID4 0x29274013
+set _CPUTAPID5 0x29275013
+set _CPUTAPID6 0x29277013
-#use combined on interfaces or targets that can?t set TRST/SRST separately
-reset_config srst_only srst_pulls_trst
-#jtag scan chain
-
-jtag newtap $_CHIPNAME cpu -irlen 7 -ircapture 0x1 -irmask 0x7f -expected-id
$_CPUTAPID
+jtag newtap $_CHIPNAME cpu -irlen 7 -ircapture 0x1 -irmask 0x7f -expected-id
$_CPUTAPID -expected-id $_CPUTAPID2 -expected-id $_CPUTAPID3 -expected-id
$_CPUTAPID4 -expected-id $_CPUTAPID5 -expected-id $_CPUTAPID6
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME xscale -endian $_ENDIAN -chain-position
$_TARGETNAME -variant ixp42x
+
+# register constants for IXP42x SDRAM controller
+global IXP425_SDRAM_IR_MODE_SET_CAS2_CMD
+global IXP425_SDRAM_IR_MODE_SET_CAS3_CMD
+set IXP425_SDRAM_IR_MODE_SET_CAS2_CMD 0x0000
+set IXP425_SDRAM_IR_MODE_SET_CAS3_CMD 0x0001
+
+global IXP42x_SDRAM_CL3
+global IXP42x_SDRAM_CL2
+set IXP42x_SDRAM_CL3 0x0008
+set IXP42x_SDRAM_CL2 0x0000
+
+global IXP42x_SDRAM_8MB_2Mx32_1BANK
+global IXP42x_SDRAM_16MB_2Mx32_2BANK
+global IXP42x_SDRAM_16MB_4Mx16_1BANK
+global IXP42x_SDRAM_32MB_4Mx16_2BANK
+global IXP42x_SDRAM_32MB_8Mx16_1BANK
+global IXP42x_SDRAM_64MB_8Mx16_2BANK
+global IXP42x_SDRAM_64MB_16Mx16_1BANK
+global IXP42x_SDRAM_128MB_16Mx16_2BANK
+global IXP42x_SDRAM_128MB_32Mx16_1BANK
+global IXP42x_SDRAM_256MB_32Mx16_2BANK
+
+set IXP42x_SDRAM_8MB_2Mx32_1BANK 0x0030
+set IXP42x_SDRAM_16MB_2Mx32_2BANK 0x0031
+set IXP42x_SDRAM_16MB_4Mx16_1BANK 0x0032
+set IXP42x_SDRAM_32MB_4Mx16_2BANK 0x0033
+set IXP42x_SDRAM_32MB_8Mx16_1BANK 0x0010
+set IXP42x_SDRAM_64MB_8Mx16_2BANK 0x0011
+set IXP42x_SDRAM_64MB_16Mx16_1BANK 0x0012
+set IXP42x_SDRAM_128MB_16Mx16_2BANK 0x0013
+set IXP42x_SDRAM_128MB_32Mx16_1BANK 0x0014
+set IXP42x_SDRAM_256MB_32Mx16_2BANK 0x0015
+
+
+# helper function to init SDRAM on IXP42x.
+# SDRAM_CFG: one of IXP42X_SDRAM_xxx
+# REFRESH: refresh counter reload value (integer)
+# CASLAT: 2 or 3
+proc ixp42x_init_sdram { SDRAM_CFG REFRESH CASLAT } {
+
+ global IXP42x_SDRAM_CL3
+ global IXP42x_SDRAM_CL2
+ global IXP425_SDRAM_IR_MODE_SET_CAS2_CMD
+ global IXP425_SDRAM_IR_MODE_SET_CAS3_CMD
+
+ switch $CASLAT {
+ 2 {
+ set SDRAM_CFG [expr $SDRAM_CFG | $IXP42x_SDRAM_CL2 ]
+ set CASCMD $IXP425_SDRAM_IR_MODE_SET_CAS2_CMD
+ }
+ 3 {
+ set SDRAM_CFG [expr $SDRAM_CFG | $IXP42x_SDRAM_CL3 ]
+ set CASCMD $IXP425_SDRAM_IR_MODE_SET_CAS3_CMD
+ }
+ default { error [format "unsupported cas latency \"%s\" " $CASLAT] }
+ }
+ echo [format "\tIXP42x SDRAM Config: 0x%x, Refresh %d " $SDRAM_CFG
$REFRESH]
+
+ mww 0xCC000000 $SDRAM_CFG # SDRAM_CFG: 0x2A: 64MBit, CL3
+ mww 0xCC000004 0 # disable refresh
+ mww 0xCC000008 3 # NOP
+ sleep 100
+ mww 0xCC000004 $REFRESH # set refresh counter
+ mww 0xCC000008 2 # Precharge All Banks
+ sleep 100
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 4 # Auto Refresh
+ mww 0xCC000008 $CASCMD # Mode Select CL2/CL3
+}
+
+proc ixp42x_set_bigendian { } {
+ reg XSCALE_CTRL 0xF8
+}
+
diff --git a/tcl/target/xba_revA3.cfg b/tcl/target/xba_revA3.cfg
deleted file mode 100644
index 8ff5be9..0000000
--- a/tcl/target/xba_revA3.cfg
+++ /dev/null
@@ -1,88 +0,0 @@
-#Written by: Michael Schwingen <rincew...@discworld.dascon.de>
-
-if { [info exists CHIPNAME] } {
- set _CHIPNAME $CHIPNAME
-} else {
- set _CHIPNAME xba_reva3
-}
-
-if { [info exists ENDIAN] } {
- set _ENDIAN $ENDIAN
-} else {
- # default to big endian
- set _ENDIAN big
-}
-
-if { [info exists CPUTAPID ] } {
- set _CPUTAPID $CPUTAPID
-} else {
- # force an error till we get a good number
- set _CPUTAPID 0xffffffff
-}
-
-reset_config trst_and_srst separate
-
-adapter_nsrst_delay 100
-jtag_ntrst_delay 100
-
-#jtag scan chain
-jtag newtap $_CHIPNAME cpu -irlen 7 -ircapture 0x1 -irmask 0x7f -expected-id
$_CPUTAPID
-
-set _TARGETNAME $_CHIPNAME.cpu
-target create $_TARGETNAME xscale -endian $_ENDIAN -chain-position
$_TARGETNAME -variant ixp42x
-
-$_TARGETNAME configure -event reset-init {
-
#############################################################################
- # setup expansion bus CS, disable external wdt
-
#############################################################################
- mww 0xc4000000 0xbd113842 #CS0 : Flash, write enabled @0x50000000
- mww 0xc4000004 0x94d10013 #CS1
- mww 0xc4000008 0x95960003 #CS2
- mww 0xc400000c 0x00000000 #CS3
- mww 0xc4000010 0x80900003 #CS4
- mww 0xc4000014 0x9d520003 #CS5
- mww 0xc4000018 0x81860001 #CS6
- mww 0xc400001c 0x80900003 #CS7
-
-
#############################################################################
- # init SDRAM controller: 16MB, one bank, CL3
-
#############################################################################
- mww 0xCC000000 0x2A # SDRAM_CFG: 64MBit, CL3
- mww 0xCC000004 0 # disable refresh
- mww 0xCC000008 3 # NOP
- sleep 100
- mww 0xCC000004 2100 # set refresh counter
- mww 0xCC000008 2 # Precharge All Banks
- sleep 100
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 4 # Auto Refresh
- mww 0xCC000008 1 # Mode Select CL3
-
- #mww 0xc4000020 0xffffee # CFG0: remove expansion bus boot flash
- #mirror at 0x00000000
-
- #big endian
- reg XSCALE_CTRL 0xF8
-
- #
- # detect flash
- #
- flash probe 0
-}
-
-$_TARGETNAME configure -work-area-phys 0x20010000 -work-area-size 0x8060
-work-area-backup 0
-
-
-set _FLASHNAME $_CHIPNAME.flash
-flash bank $_FLASHNAME cfi 0x50000000 0x400000 2 2 $_TARGETNAME
-
-init
-reset init
-# set big endian mode
-reg XSCALE_CTRL 0xF8
--
1.7.2.3
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