* Patch by Nicolas Lacressonniere, 11 Jun 2003:

  Modifications for Atmel AT91RM9200DK ARM920T based development kit
  - Add Atmel DataFlash support for reading and writing.
  - Add possibility to boot a Linux from DataFlash with BOOTM command.
  - Add Flash detection on Atmel AT91RM9200DK
    (between Atmel AT49BV1614 and AT49BV1614A flashes)
  - Replace old Ethernet PHY layer functions
  - Change link address

* Patch by Frank Smith, 9 Jun 2003:
  use CRIT_EXCEPTION for machine check on 4xx

* Patch by Detlev Zundel, 13 Jun 2003:
  added implementation of the "carinfo" command in cmd_immap.c

1 files changed, 176 insertions, 0 deletions

diff --git a/include/dataflash.h b/include/dataflash.h
new file mode 100644
index 0000000..cc4badf
--- /dev/null
+++ b/include/dataflash.h
@@ -0,0 +1,176 @@
+/*
+ * (C) Copyright 2003
+ * Data Flash Atmel Description File
+ * Author : Hamid Ikdoumi (Atmel)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* File Name		: dataflash.h					*/
+/* Object		: Data Flash Atmel Description File		*/
+/* Translator		:						*/
+/*									*/
+/* 1.0 03/04/01 HI	: Creation					*/
+/* 1.2 20/10/02 FB	: Adapatation Service and Lib v3		*/
+/*----------------------------------------------------------------------*/
+
+#ifndef _DataFlash_h
+#define _DataFlash_h
+
+
+#include <asm/arch/hardware.h>
+#include "config.h"
+
+
+typedef struct {
+	unsigned long base;		/* logical base address for a bank */
+	unsigned long size;		/* total bank size */
+	unsigned long page_count;
+	unsigned long page_size;
+	unsigned long id;		/* device id */
+	unsigned char protect[CFG_MAX_DATAFLASH_PAGES]; /* page protection status */
+} dataflash_info_t;
+
+
+typedef unsigned int AT91S_DataFlashStatus;
+
+/*----------------------------------------------------------------------*/
+/* DataFlash Structures							*/
+/*----------------------------------------------------------------------*/
+
+/*---------------------------------------------*/
+/* DataFlash Descriptor Structure Definition   */
+/*---------------------------------------------*/
+typedef struct _AT91S_DataflashDesc {
+	unsigned char *tx_cmd_pt;
+	unsigned int tx_cmd_size;
+	unsigned char *rx_cmd_pt;
+	unsigned int rx_cmd_size;
+	unsigned char *tx_data_pt;
+	unsigned int tx_data_size;
+	unsigned char *rx_data_pt;
+	unsigned int rx_data_size;
+	volatile unsigned char state;
+	volatile unsigned char DataFlash_state;
+	unsigned char command[8];
+} AT91S_DataflashDesc, *AT91PS_DataflashDesc;
+
+/*---------------------------------------------*/
+/* DataFlash device definition structure       */
+/*---------------------------------------------*/
+typedef struct _AT91S_Dataflash {
+	int pages_number;			/* dataflash page number */
+	int pages_size;				/* dataflash page size */
+	int page_offset;			/* page offset in command */
+	int byte_mask;				/* byte mask in command */
+	int cs;
+} AT91S_DataflashFeatures, *AT91PS_DataflashFeatures;
+
+/*---------------------------------------------*/
+/* DataFlash Structure Definition	       */
+/*---------------------------------------------*/
+typedef struct _AT91S_DataFlash {
+	AT91PS_DataflashDesc pDataFlashDesc;	/* dataflash descriptor */
+	AT91PS_DataflashFeatures pDevice;	/* Pointer on a dataflash features array */
+} AT91S_DataFlash, *AT91PS_DataFlash;
+
+
+
+typedef struct _AT91S_DATAFLASH_INFO {
+
+	AT91S_DataflashDesc Desc;
+	AT91S_DataflashFeatures Device; /* Pointer on a dataflash features array */
+	unsigned long logical_address;
+	unsigned int id;			/* device id */
+	unsigned char protect[CFG_MAX_DATAFLASH_PAGES]; /* page protection status */
+} AT91S_DATAFLASH_INFO, *AT91PS_DATAFLASH_INFO;
+
+
+/*-------------------------------------------------------------------------------------------------*/
+
+#define AT45DB161	0x2c
+#define AT45DB321	0x34
+#define AT45DB642	0x3c
+
+#define AT91C_DATAFLASH_TIMEOUT		10000	/* For AT91F_DataFlashWaitReady */
+
+/* DataFlash return value */
+#define DATAFLASH_BUSY			0x00
+#define DATAFLASH_OK			0x01
+#define DATAFLASH_ERROR			0x02
+#define DATAFLASH_MEMORY_OVERFLOW	0x03
+#define DATAFLASH_BAD_COMMAND		0x04
+#define DATAFLASH_BAD_ADDRESS		0x05
+
+
+/* Driver State */
+#define IDLE		0x0
+#define BUSY		0x1
+#define ERROR		0x2
+
+/* DataFlash Driver State */
+#define GET_STATUS	0x0F
+
+/*-------------------------------------------------------------------------------------------------*/
+/* Command Definition										   */
+/*-------------------------------------------------------------------------------------------------*/
+
+/* READ COMMANDS */
+#define DB_CONTINUOUS_ARRAY_READ	0xE8	/* Continuous array read */
+#define DB_BURST_ARRAY_READ		0xE8	/* Burst array read */
+#define DB_PAGE_READ			0xD2	/* Main memory page read */
+#define DB_BUF1_READ			0xD4	/* Buffer 1 read */
+#define DB_BUF2_READ			0xD6	/* Buffer 2 read */
+#define DB_STATUS			0xD7	/* Status Register */
+
+/* PROGRAM and ERASE COMMANDS */
+#define DB_BUF1_WRITE			0x84	/* Buffer 1 write */
+#define DB_BUF2_WRITE			0x87	/* Buffer 2 write */
+#define DB_BUF1_PAGE_ERASE_PGM		0x83	/* Buffer 1 to main memory page program with built-In erase */
+#define DB_BUF1_PAGE_ERASE_FASTPGM	0x93	/* Buffer 1 to main memory page program with built-In erase, Fast program */
+#define DB_BUF2_PAGE_ERASE_PGM		0x86	/* Buffer 2 to main memory page program with built-In erase */
+#define DB_BUF2_PAGE_ERASE_FASTPGM	0x96	/* Buffer 1 to main memory page program with built-In erase, Fast program */
+#define DB_BUF1_PAGE_PGM		0x88	/* Buffer 1 to main memory page program without built-In erase */
+#define DB_BUF1_PAGE_FASTPGM		0x98	/* Buffer 1 to main memory page program without built-In erase, Fast program */
+#define DB_BUF2_PAGE_PGM		0x89	/* Buffer 2 to main memory page program without built-In erase */
+#define DB_BUF2_PAGE_FASTPGM		0x99	/* Buffer 1 to main memory page program without built-In erase, Fast program */
+#define DB_PAGE_ERASE			0x81	/* Page Erase */
+#define DB_BLOCK_ERASE			0x50	/* Block Erase */
+#define DB_PAGE_PGM_BUF1		0x82	/* Main memory page through buffer 1 */
+#define DB_PAGE_FASTPGM_BUF1		0x92	/* Main memory page through buffer 1, Fast program */
+#define DB_PAGE_PGM_BUF2		0x85	/* Main memory page through buffer 2 */
+#define DB_PAGE_FastPGM_BUF2		0x95	/* Main memory page through buffer 2, Fast program */
+
+/* ADDITIONAL COMMANDS */
+#define DB_PAGE_2_BUF1_TRF		0x53	/* Main memory page to buffer 1 transfert */
+#define DB_PAGE_2_BUF2_TRF		0x55	/* Main memory page to buffer 2 transfert */
+#define DB_PAGE_2_BUF1_CMP		0x60	/* Main memory page to buffer 1 compare */
+#define DB_PAGE_2_BUF2_CMP		0x61	/* Main memory page to buffer 2 compare */
+#define DB_AUTO_PAGE_PGM_BUF1		0x58	/* Auto page rewrite throught buffer 1 */
+#define DB_AUTO_PAGE_PGM_BUF2		0x59	/* Auto page rewrite throught buffer 2 */
+
+/*-------------------------------------------------------------------------------------------------*/
+
+extern int addr_dataflash (unsigned long addr);
+extern int read_dataflash (unsigned long addr, unsigned long size, char *result);
+extern int write_dataflash (unsigned long addr, unsigned long dest, unsigned long size);
+extern void dataflash_print_info (void);
+extern void dataflash_perror (int err);
+
+#endif