X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=tcl%2Ftarget%2Fixp42x.cfg;h=d7b5bf47067eab91970f47253a265cc66fcbf848;hp=fbb227bb7a0d7ac2f6a02371184bf7f0e71dfc9c;hb=1c021ed0afb5f9f7d9e8cbce53a4fe985a4c2235;hpb=ce89c7bf6588c7b2800c4ca453278b6f94795130

diff --git a/tcl/target/ixp42x.cfg b/tcl/target/ixp42x.cfg
index fbb227bb7a..d7b5bf4706 100644
--- a/tcl/target/ixp42x.cfg
+++ b/tcl/target/ixp42x.cfg
@@ -1,32 +1,107 @@
 #xscale ixp42x CPU
 
-
-if { [info exists CHIPNAME] } {	
-   set  _CHIPNAME $CHIPNAME    
-} else {	 
-   set  _CHIPNAME ixp42x
+if { [info exists CHIPNAME] } {
+   set _CHIPNAME $CHIPNAME
+} else {
+   set _CHIPNAME ixp42x
 }
 
-if { [info exists ENDIAN] } {	
-   set  _ENDIAN $ENDIAN    
-} else {	 
+if { [info exists ENDIAN] } {
+   set _ENDIAN $ENDIAN
+} else {
   # this defaults to a bigendian
-   set  _ENDIAN big
+   set _ENDIAN big
 }
 
-if { [info exists CPUTAPID ] } {
+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
+target create $_TARGETNAME xscale -endian $_ENDIAN -chain-position $_TARGETNAME
+
+
+# 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 } {
+
+    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
+}