* 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
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