initial push

m68k/flashlib/flash29.h

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+/* $Id: flash29.h,v 1.2 2008/07/31 01:53:44 cjohns Exp $
+ *
+ * Header for 29Fxxx and 49Fxxx flash driver.
+ *
+ * 2003-12-28 Josef Wolf (jw@raven.inka.de)
+ *
+ * Portions of this program which I authored may be used for any purpose
+ * so long as this notice is left intact. 
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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.
+ */
+
+/* This function will be called by flash_filter and is responsible to register
+   the driver
+*/
+void init_flash29(int num);
+
+/* following #define's should probably be set by configure
+ */
+
+/* Setting this to 0 produces more generic (and compact) code which is able
+   to program all bus widths at the expense of performance. Setting this
+   to 1 approximately doubles the programming speed on a 20MHz 68332 with
+   Am29F400 in 16-bit-mode.
+*/
+#define FLASH_OPTIMIZE_FOR_SPEED 0
+
+/* When FLASH_OPTIMIZE_FOR_SPEED==1, selecting only required bus widths can
+   reduce size of generated code
+*/
+#define FLASH_BUS_WIDTH1 1
+#define FLASH_BUS_WIDTH2 1
+#define FLASH_BUS_WIDTH4 1
+
+#if FLASH_OPTIMIZE_FOR_SPEED
+# if ( !FLASH_BUS_WIDTH1 && !FLASH_BUS_WIDTH2 && !FLASH_BUS_WIDTH4 )
+#  error At least one bus width must be defined when FLASH_OPTIMIZE_FOR_SPEED!=0
+# endif
+#endif