started implementing flashin routines

BaS_gcc/sources/flash.c

@@ -0,0 +1,109 @@
+/*
+ * flash.c
+ *
+ * flashing routines for BaS_gcc
+ *
+ *  Created on: 19.12.2012
+ *      Author: mfro
+ *      The ACP Firebee project
+ *
+ * This file is part of BaS_gcc.
+ *
+ * BaS_gcc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BaS_gcc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with BaS_gcc.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2012        M. Froeschle
+ */
+
+
+
+void chip_erase(uint8_t *address)
+{
+	* (address + 0xaaa) = 0xaa;
+	* (address + 0x555) = 0x55;
+	* (address + 0xaaa) = 0x80;
+	* (address + 0xaaa) = 0xaa;
+	* (address + 0x555) = 0x55;
+	* (address + 0xaaa) = 0x10;
+}
+
+void sector_erase(uint8_t *address, uint16_t sector)
+{
+	* (address + 0xaaa) = 0xaa;
+	* (address + 0x555) = 0x55;
+	* (address + 0xaaa) = 0x80;
+	* (address + 0xaaa) = 0xaa;
+	* (address + 0x555) = 0x55;
+	* (address + sector) = 0x30;
+
+	do {
+		;
+	} while (* (uint32_t *) (address + sector) != 0xffffffff);
+}
+
+
+* MX28LV640DB.alg
+	bra	lab0x5a
+	move.w	#0xaa,d0
+	move.w	d0,0xaaa(a5)
+	move.w	#0xff,d0
+	move.w	d0,0x554(a5)
+	move.w	#0x20,d0
+	move.w	d0,0xaaa(a5)
+lab0x1c:
+	move.w	#0xa0,d0
+	move.w	d0,(a5)
+	moveq 	#0,d0
+	move.w	(a3),d0
+	move.w	d0,(a4)
+lab0x28:
+	move.w	(a4),d1
+	andi.l	#0xffff,d1
+	cmp.l	d1,d0
+	bne.s	lab0x28
+	adda.l	#2,a3
+	adda.l	#2,a4
+	cmpa.l	a2,a3
+	blt.s	lab0x1c
+	move.w	#0x90,d0
+	move.w	d0,(a5)
+	move.w	#0,d0
+	move.w	d0,(a5)
+lab0x50:
+	nop
+	nop
+	halt
+	nop
+	bra.s	lab0x50
+lab0x5a:
+	move.w	#0xaa,d0
+	move.w	d0,0xaaa(a5)
+	move.w	#0x55,d0
+	move.w	d0,0x554(a5)
+	move.w	#0x80,d0
+	move.w	d0,0xaaa(a5)
+	move.w	#0xaa,d0
+	move.w	d0,0xaaa(a5)
+	move.w	#0x55,d0
+	move.w	d0,0x554(a5)
+	move.w	#0x30,d0
+	move.w	d0,(a4)
+lab0x88:
+	move.l	(a4),d1
+	move.l	#-1,d0
+	cmp.l	d1,d0
+	bne.s	lab0x88
+	nop
+	nop
+	halt
+	nop