stm32: add STM32E-EVAL external memory config script

Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>

tcl/board/stm3210e_eval.cfg

@@ -6,3 +6,59 @@
 set WORKAREASIZE 32768
 
 source [find target/stm32.cfg]
+
+#
+# configure FSMC Bank 1 (NOR/PSRAM Bank 2) NOR flash
+# M29W128GL70ZA6E
+#
+
+set _FLASHNAME $_CHIPNAME.norflash
+flash bank $_FLASHNAME cfi 0x64000000 0x01000000 2 2 $_TARGETNAME
+
+proc stm32_enable_fsmc {} {
+
+	echo "Enabling FSMC Bank 1 (NOR/PSRAM Bank 2)"
+	
+	# enable gpio (defg) clocks for fsmc
+	# RCC_APB2ENR
+	mww 0x40021018 0x000001E0
+	
+	# enable fsmc clock
+	# RCC_AHBENR
+	mww 0x40021014 0x00000114
+
+	# configure gpio to alternate function
+	# GPIOD_CRL
+	mww 0x40011400 0x44BB44BB
+	# GPIOD_CRH
+	mww 0x40011404 0xBBBBBBBB
+	
+	# GPIOE_CRL
+	mww 0x40011800 0xBBBBB444
+	# GPIOE_CRH
+	mww 0x40011804 0xBBBBBBBB
+	
+	# GPIOF_CRL
+	mww 0x40011C00 0x44BBBBBB
+	# GPIOF_CRH
+	mww 0x40011C04 0xBBBB4444
+	
+	# GPIOG_CRL
+	mww 0x40012000 0x44BBBBBB
+	# GPIOG_CRH
+	mww 0x40012004 0x444444B4
+	
+	# setup fsmc timings
+	# FSMC_BCR1
+	mww 0xA0000008 0x00001058
+	
+	# FSMC_BTR1
+	mww 0xA000000C 0x10000502
+	
+	# FSMC_BCR1 - enable fsmc
+	mww 0xA0000008 0x00001059
+}
+
+$_TARGETNAME configure -event reset-init {
+	stm32_enable_fsmc
+}