Import changeset

1 files changed, 101 insertions, 0 deletions

diff --git a/system/alpha/h/flash.h b/system/alpha/h/flash.h
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+++ b/system/alpha/h/flash.h
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+#ifndef __FLASH_H_LOADED
+#define __FLASH_H_LOADED
+
+/*****************************************************************************
+
+Copyright © 1994, Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted, provided
+that the copyright notice and this permission notice appear in all copies
+of software and supporting documentation, and that the name of Digital not
+be used in advertising or publicity pertaining to distribution of the software
+without specific, written prior permission. Digital grants this permission
+provided that you prominently mark, as not part of the original, any
+modifications made to this software or documentation.
+
+Digital Equipment Corporation disclaims all warranties and/or guarantees
+with regard to this software, including all implied warranties of fitness for
+a particular purpose and merchantability, and makes no representations
+regarding the use of, or the results of the use of, the software and
+documentation in terms of correctness, accuracy, reliability, currentness or
+otherwise; and you rely on the software, documentation and results solely at
+your own risk.
+
+******************************************************************************/
+#define FLASH_H_RCSID "$Id: flash.h,v 1.1.1.1 1997/10/30 23:27:15 verghese Exp $"
+
+/*
+ * Defines constants and macros for controlling the flash memory device.
+ *
+ * $Log: flash.h,v $
+ * Revision 1.1.1.1  1997/10/30 23:27:15  verghese
+ * current 10/29/97
+ *
+ * Revision 1.2  1995/02/02  21:42:06  cruz
+ * Changed prototype for two flash functions.
+ *
+ * Revision 1.1  1994/11/08  21:40:02  fdh
+ * Initial revision
+ *
+ *
+ */
+
+#define FLASH_BYTE 1
+#define FLASH_WORD 2
+#define FLASH_LONG 4
+#define FLASH_QUAD 8
+
+#if (defined INTEL_28F008SA || defined INTEL_28F004BX_T)
+/* Flash commands */
+#define	READ_RESET	0xff
+#define IID		0x90
+#define READ_STATUS	0x70
+#define CLEAR_STATUS	0x50
+#define ERASE_SETUP	0x20
+#define ERASE_CONFIRM	0xd0
+#define ERASE_SUSPEND	0xB0
+#define BYTE_WRITE	0x40
+#define	ALT_WR_SET_WR	0x10
+
+/* Status bits */
+#define	SR_READY	(1 << 7)
+#define SR_ERASE_SUSP	(1 << 6)
+#define SR_ERASE_ERR	(1 << 5)
+#define SR_WRITE_ERR	(1 << 4)
+#define SR_VPP_LOW	(1 << 3)
+#define SR_CMD_SEQ_ERR	(SR_WRITE_ERR | SR_ERASE_ERR)
+#endif
+
+#ifdef INTEL_28F008SA
+#define BX_T_M_CODE	0x89
+#define BX_T_D_CODE	0xA2
+#define DEVICE_NAME	"Intel 28F008SA"
+
+#define NUMSEGS		16
+#define SEGSIZE		(64 * 1024)
+#endif /* INTEL_28F008SA */
+
+#ifdef INTEL_28F004BX_T
+#define BX_T_M_CODE	0x89
+#define BX_T_D_CODE	0x78
+#define DEVICE_NAME	"Intel 28F004BX-T"
+
+#define NUMSEGS		4
+#define SEGSIZE		(128 * 1024)
+#endif /* INTEL_28F004BX_T */
+
+/* prototypes */
+static ui inflash(ui size , ui offset);
+static void outflash(ui size , ui offset , ui d);
+static int flash_present(void);
+static int flash_write_segs (ui segstart, ui segcnt, ui total_size, unsigned char *buf);
+static int read_status(void);
+static int flash_decode(int status);
+static int flash_erase(ui segnum);
+static int flash_program (ui offset, ui size, unsigned char *buf);
+static int clear_status(void);
+
+#endif /* __FLASH_H_LOADED */