pic32mx: 0 wait state option

[openocd.git] / tcl / target / pic32mx.cfg

diff --git a/tcl/target/pic32mx.cfg b/tcl/target/pic32mx.cfg
index 5e64cb84dd654fbd0b73ab0be265bd7b8b4f0672..d53b99a587cf82e3240ec7611e5ca8e52c749c4b 100644 (file)
--- a/tcl/target/pic32mx.cfg
+++ b/tcl/target/pic32mx.cfg
@@ -40,7 +40,7 @@ target create $_TARGETNAME mips_m4k -endian $_ENDIAN -chain-position $_TARGETNAM
 #
 
 global _PIC32MX_DATASIZE
-global _PIC32MX_PROGSIZE
+global _WORKAREASIZE
 set _PIC32MX_DATASIZE 0x800
 set _PIC32MX_PROGSIZE [expr ($_WORKAREASIZE - $_PIC32MX_DATASIZE)]
 
@@ -50,18 +50,31 @@ $_TARGETNAME configure -event reset-init {
        # from reset the pic32 cannot execute code in ram - enable ram execution
        # minimum offset from start of ram is 2k
        #
-
        global _PIC32MX_DATASIZE
-       global _PIC32MX_PROGSIZE
+       global _WORKAREASIZE
 
-       # BMXCON
-       mww 0xbf882000 0x001f0040
-       # BMXDKPBA: 2k kernel data @ 0xa0000800
+       # BMXCON        set 0 wait state option by clearing BMXWSDRM bit, bit 6
+       mww 0xbf882000 0x001f0000
+       # BMXDKPBA: 2k kernel data @ 0xa0000000
        mww 0xbf882010 $_PIC32MX_DATASIZE
-       # BMXDUDBA: 16k kernel program @ 0xa0000800
-       mww 0xbf882020 $_PIC32MX_PROGSIZE
-       # BMXDUPBA: 0k user program
-       mww 0xbf882030 $_PIC32MX_PROGSIZE
+       # BMXDUDBA: 14k kernel program @ 0xa0000800 - (BMXDUDBA - BMXDKPBA)
+       mww 0xbf882020 $_WORKAREASIZE
+       # BMXDUPBA: 0k user program - (BMXDUPBA - BMXDUDBA)
+       mww 0xbf882030 $_WORKAREASIZE
+
+       #
+       # Set system clock to 8Mhz if the default clock configuration is set
+       #
+
+       # SYSKEY register, make sure OSCCON is locked
+       mww 0xbf80f230 0x0
+       # SYSKEY register, write unlock sequence
+       mww 0xbf80f230 0xaa996655
+       mww 0xbf80f230 0x556699aa
+       # OSCCON register + 4, clear OSCCON FRCDIV bits: 24, 25 and 26, divided by 1
+       mww 0xbf80f004 0x07000000
+       # SYSKEY register, relock OSCCON
+       mww 0xbf80f230 0x0
 }
 
 set _FLASHNAME $_CHIPNAME.flash0