[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.

[Ulf Samuelsson]

Author: Ulf Samuelsson <ulf@atmel.com>
Date:     2007-03-27

Subject:	"1.at45":(1 of  4)     [PATCH] [ARM] 	Merge to two files into a common file and split.

CHANGELOG:
    [PATCH] [ARM] 	Merge to two files into a common file and split.

    Merge to two virtually identical files.
	"board/at91rm9200dk/at45.c"
	"board/cmc_pu2/at45.c" (one bug fixed first)
    into "driver/at45.c" then move at91rm9200 specific functions from
    "driver/at45.c" to:	"cpu/arm920t/at91rm9200/spi.c	
    Update Makefiles to reflect change

    Patch generated from files:
          drivers_at45.c.patch
          drivers_Makefile.patch
          include_at45.h.patch

    Signed-off-by:	Ulf Samuelsson
---------------------------------------------------------------------------------------------------------------------------------
diff -urN u-boot-1.2.0-0rig/drivers/at45.c u-boot-1.2.0-atmel/drivers/at45.c
--- u-boot-1.2.0-0rig/drivers/at45.c	1970-01-01 01:00:00.000000000 +0100
+++ u-boot-1.2.0-atmel/drivers/at45.c	2007-03-24 20:07:32.000000000 +0100
@@ -0,0 +1,514 @@
+/* Driver for ATMEL DataFlash support
+ * Author : Hamid Ikdoumi (Atmel)
+ *
+ * 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
+ *
+ */
+
+#include <config.h>
+#include <common.h>
+
+#ifdef CONFIG_HAS_DATAFLASH
+#include <dataflash.h>
+
+
+#define AT91C_TIMEOUT_WRDY			200000
+
+
+/*----------------------------------------------------------------------*/
+/* \fn    AT91F_DataFlashSendCommand					*/
+/* \brief Generic function to send a command to the dataflash		*/
+/*----------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char OpCode,
+	unsigned int CmdSize,
+	unsigned int DataflashAddress)
+{
+    unsigned int adr;
+
+	if ( (pDataFlash->pDataFlashDesc->state) != IDLE)
+		return DATAFLASH_BUSY;
+
+	/* process the address to obtain page address and byte address */
+	adr = ((DataflashAddress / (pDataFlash->pDevice->pages_size)) << pDataFlash->pDevice->page_offset) + (DataflashAddress % (pDataFlash->pDevice->pages_size));
+
+	/* fill the  command  buffer */
+	pDataFlash->pDataFlashDesc->command[0] = OpCode;
+	if (pDataFlash->pDevice->pages_number >= 16384) {
+		pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x0F000000) >> 24);
+		pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x00FF0000) >> 16);
+		pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((adr & 0x0000FF00) >> 8);
+		pDataFlash->pDataFlashDesc->command[4] = (unsigned char)(adr & 0x000000FF);
+	} else {
+		pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x00FF0000) >> 16);
+		pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x0000FF00) >> 8);
+		pDataFlash->pDataFlashDesc->command[3] = (unsigned char)(adr & 0x000000FF) ;
+		pDataFlash->pDataFlashDesc->command[4] = 0;
+	}
+	pDataFlash->pDataFlashDesc->command[5] = 0;
+	pDataFlash->pDataFlashDesc->command[6] = 0;
+	pDataFlash->pDataFlashDesc->command[7] = 0;
+
+	/* Initialize the SpiData structure for the spi write fuction */
+	pDataFlash->pDataFlashDesc->tx_cmd_pt   =  pDataFlash->pDataFlashDesc->command ;
+	pDataFlash->pDataFlashDesc->tx_cmd_size =  CmdSize ;
+	pDataFlash->pDataFlashDesc->rx_cmd_pt   =  pDataFlash->pDataFlashDesc->command ;
+	pDataFlash->pDataFlashDesc->rx_cmd_size =  CmdSize ;
+
+	/* send the command and read the data */
+	return AT91F_SpiWrite (pDataFlash->pDataFlashDesc);
+}
+
+
+/*----------------------------------------------------------------------*/
+/* \fn    AT91F_DataFlashGetStatus					*/
+/* \brief Read the status register of the dataflash			*/
+/*----------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc)
+{
+	AT91S_DataFlashStatus status;
+
+	/* if a transfert is in progress ==> return 0 */
+	if( (pDesc->state) != IDLE)
+		return DATAFLASH_BUSY;
+
+	/* first send the read status command (D7H) */
+	pDesc->command[0] = DB_STATUS;
+	pDesc->command[1] = 0;
+
+	pDesc->DataFlash_state  = GET_STATUS;
+	pDesc->tx_data_size 	= 0 ;	/* Transmit the command and receive response */
+	pDesc->tx_cmd_pt 		= pDesc->command ;
+	pDesc->rx_cmd_pt 		= pDesc->command ;
+	pDesc->rx_cmd_size 		= 2 ;
+	pDesc->tx_cmd_size 		= 2 ;
+	status = AT91F_SpiWrite (pDesc);
+
+	pDesc->DataFlash_state = *( (unsigned char *) (pDesc->rx_cmd_pt) +1);
+
+	return status;
+}
+
+
+/*----------------------------------------------------------------------*/
+/* \fn    AT91F_DataFlashWaitReady					*/
+/* \brief wait for dataflash ready (bit7 of the status register == 1)	*/
+/*----------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc pDataFlashDesc, unsigned int timeout)
+{
+	pDataFlashDesc->DataFlash_state = IDLE;
+
+	do {
+		AT91F_DataFlashGetStatus(pDataFlashDesc);
+		timeout--;
+	} while( ((pDataFlashDesc->DataFlash_state & 0x80) != 0x80) && (timeout > 0) );
+
+	if((pDataFlashDesc->DataFlash_state & 0x80) != 0x80)
+		return DATAFLASH_ERROR;
+
+	return DATAFLASH_OK;
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_DataFlashContinuousRead 				*/
+/* Object              : Continuous stream Read 				*/
+/* Input Parameters    : DataFlash Service					*/
+/*						: <src> = dataflash address	*/
+/*                     : <*dataBuffer> = data buffer pointer			*/
+/*                     : <sizeToRead> = data buffer size			*/
+/* Return value		: State of the dataflash				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
+	AT91PS_DataFlash pDataFlash,
+	int src,
+	unsigned char *dataBuffer,
+	int sizeToRead )
+{
+	AT91S_DataFlashStatus status;
+	/* Test the size to read in the device */
+	if ( (src + sizeToRead) > (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number)))
+		return DATAFLASH_MEMORY_OVERFLOW;
+
+	pDataFlash->pDataFlashDesc->rx_data_pt = dataBuffer;
+	pDataFlash->pDataFlashDesc->rx_data_size = sizeToRead;
+	pDataFlash->pDataFlashDesc->tx_data_pt = dataBuffer;
+	pDataFlash->pDataFlashDesc->tx_data_size = sizeToRead;
+
+	status = AT91F_DataFlashSendCommand (pDataFlash, DB_CONTINUOUS_ARRAY_READ, 8, src);
+	/* Send the command to the dataflash */
+	return(status);
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_DataFlashPagePgmBuf				*/
+/* Object              : Main memory page program through buffer 1 or buffer 2	*/
+/* Input Parameters    : DataFlash Service					*/
+/*						: <*src> = Source buffer	*/
+/*                     : <dest> = dataflash destination address			*/
+/*                     : <SizeToWrite> = data buffer size			*/
+/* Return value		: State of the dataflash				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	unsigned int dest,
+	unsigned int SizeToWrite)
+{
+	int cmdsize;
+	pDataFlash->pDataFlashDesc->tx_data_pt = src ;
+	pDataFlash->pDataFlashDesc->tx_data_size = SizeToWrite ;
+	pDataFlash->pDataFlashDesc->rx_data_pt = src;
+	pDataFlash->pDataFlashDesc->rx_data_size = SizeToWrite;
+
+	cmdsize = 4;
+	/* Send the command to the dataflash */
+	if (pDataFlash->pDevice->pages_number >= 16384)
+		cmdsize = 5;
+	return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_PGM_BUF1, cmdsize, dest));
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_MainMemoryToBufferTransfert			*/
+/* Object              : Read a page in the SRAM Buffer 1 or 2			*/
+/* Input Parameters    : DataFlash Service					*/
+/*                     : Page concerned						*/
+/*                     : 							*/
+/* Return value		: State of the dataflash				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned int page)
+{
+	int cmdsize;
+	/* Test if the buffer command is legal */
+	if ((BufferCommand != DB_PAGE_2_BUF1_TRF) && (BufferCommand != DB_PAGE_2_BUF2_TRF))
+		return DATAFLASH_BAD_COMMAND;
+
+	/* no data to transmit or receive */
+	pDataFlash->pDataFlashDesc->tx_data_size = 0;
+	cmdsize = 4;
+	if (pDataFlash->pDevice->pages_number >= 16384)
+		cmdsize = 5;
+	return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize, page*pDataFlash->pDevice->pages_size));
+}
+
+
+/*----------------------------------------------------------------------------- */
+/* Function Name       : AT91F_DataFlashWriteBuffer				*/
+/* Object              : Write data to the internal sram buffer 1 or 2		*/
+/* Input Parameters    : DataFlash Service					*/
+/*			: <BufferCommand> = command to write buffer1 or buffer2	*/
+/*                     : <*dataBuffer> = data buffer to write			*/
+/*                     : <bufferAddress> = address in the internal buffer	*/
+/*                     : <SizeToWrite> = data buffer size			*/
+/* Return value		: State of the dataflash				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned char *dataBuffer,
+	unsigned int bufferAddress,
+	int SizeToWrite )
+{
+	int cmdsize;
+	/* Test if the buffer command is legal */
+	if ((BufferCommand != DB_BUF1_WRITE) && (BufferCommand != DB_BUF2_WRITE))
+		return DATAFLASH_BAD_COMMAND;
+
+	/* buffer address must be lower than page size */
+	if (bufferAddress > pDataFlash->pDevice->pages_size)
+		return DATAFLASH_BAD_ADDRESS;
+
+	if ( (pDataFlash->pDataFlashDesc->state)  != IDLE)
+		return DATAFLASH_BUSY;
+
+	/* Send first Write Command */
+	pDataFlash->pDataFlashDesc->command[0] = BufferCommand;
+	pDataFlash->pDataFlashDesc->command[1] = 0;
+	if (pDataFlash->pDevice->pages_number >= 16384) {
+	    	pDataFlash->pDataFlashDesc->command[2] = 0;
+	    	pDataFlash->pDataFlashDesc->command[3] = (unsigned char)(((unsigned int)(bufferAddress &  pDataFlash->pDevice->byte_mask)) >> 8) ;
+	    	pDataFlash->pDataFlashDesc->command[4] = (unsigned char)((unsigned int)bufferAddress  & 0x00FF) ;
+		cmdsize = 5;
+	} else {
+	    	pDataFlash->pDataFlashDesc->command[2] = (unsigned char)(((unsigned int)(bufferAddress &  pDataFlash->pDevice->byte_mask)) >> 8) ;
+	    	pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((unsigned int)bufferAddress  & 0x00FF) ;
+	    	pDataFlash->pDataFlashDesc->command[4] = 0;
+		cmdsize = 4;
+	}
+
+	pDataFlash->pDataFlashDesc->tx_cmd_pt 	 = pDataFlash->pDataFlashDesc->command ;
+	pDataFlash->pDataFlashDesc->tx_cmd_size = cmdsize ;
+	pDataFlash->pDataFlashDesc->rx_cmd_pt 	 = pDataFlash->pDataFlashDesc->command ;
+	pDataFlash->pDataFlashDesc->rx_cmd_size = cmdsize ;
+
+	pDataFlash->pDataFlashDesc->rx_data_pt 	= dataBuffer ;
+	pDataFlash->pDataFlashDesc->tx_data_pt 	= dataBuffer ;
+	pDataFlash->pDataFlashDesc->rx_data_size 	= SizeToWrite ;
+	pDataFlash->pDataFlashDesc->tx_data_size 	= SizeToWrite ;
+
+	return AT91F_SpiWrite(pDataFlash->pDataFlashDesc);
+}
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_PageErase                                        */
+/* Object              : Erase a page 						*/
+/* Input Parameters    : DataFlash Service					*/
+/*                     : Page concerned						*/
+/*                     : 							*/
+/* Return value		: State of the dataflash				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_PageErase(
+	AT91PS_DataFlash pDataFlash,
+	unsigned int page)
+{
+	int cmdsize;
+	/* Test if the buffer command is legal */
+	/* no data to transmit or receive */
+    	pDataFlash->pDataFlashDesc->tx_data_size = 0;
+
+	cmdsize = 4;
+	if (pDataFlash->pDevice->pages_number >= 16384)
+		cmdsize = 5;
+	return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_ERASE, cmdsize, page*pDataFlash->pDevice->pages_size));
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_BlockErase                                       */
+/* Object              : Erase a Block 						*/
+/* Input Parameters    : DataFlash Service					*/
+/*                     : Page concerned						*/
+/*                     : 							*/
+/* Return value		: State of the dataflash				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_BlockErase(
+	AT91PS_DataFlash pDataFlash,
+	unsigned int block)
+{
+	int cmdsize;
+	/* Test if the buffer command is legal */
+	/* no data to transmit or receive */
+    	pDataFlash->pDataFlashDesc->tx_data_size = 0;
+	cmdsize = 4;
+	if (pDataFlash->pDevice->pages_number >= 16384)
+		cmdsize = 5;
+	return(AT91F_DataFlashSendCommand (pDataFlash, DB_BLOCK_ERASE,cmdsize, block*8*pDataFlash->pDevice->pages_size));
+}
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_WriteBufferToMain				*/
+/* Object              : Write buffer to the main memory			*/
+/* Input Parameters    : DataFlash Service					*/
+/*		: <BufferCommand> = command to send to buffer1 or buffer2	*/
+/*                     : <dest> = main memory address				*/
+/* Return value		: State of the dataflash				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_WriteBufferToMain (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned int dest )
+{
+	int cmdsize;
+	/* Test if the buffer command is correct */
+	if ((BufferCommand != DB_BUF1_PAGE_PGM) &&
+	    (BufferCommand != DB_BUF1_PAGE_ERASE_PGM) &&
+	    (BufferCommand != DB_BUF2_PAGE_PGM) &&
+	    (BufferCommand != DB_BUF2_PAGE_ERASE_PGM) )
+		return DATAFLASH_BAD_COMMAND;
+
+	/* no data to transmit or receive */
+	pDataFlash->pDataFlashDesc->tx_data_size = 0;
+
+	cmdsize = 4;
+	if (pDataFlash->pDevice->pages_number >= 16384)
+		cmdsize = 5;
+	/* Send the command to the dataflash */
+	return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize, dest));
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_PartialPageWrite					*/
+/* Object              : Erase partielly a page					*/
+/* Input Parameters    : <page> = page number					*/
+/*			: <AdrInpage> = adr to begin the fading			*/
+/*                     : <length> = Number of bytes to erase			*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_PartialPageWrite (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	unsigned int dest,
+	unsigned int size)
+{
+	unsigned int page;
+	unsigned int AdrInPage;
+
+	page = dest / (pDataFlash->pDevice->pages_size);
+	AdrInPage = dest % (pDataFlash->pDevice->pages_size);
+
+	/* Read the contents of the page in the Sram Buffer */
+	AT91F_MainMemoryToBufferTransfert(pDataFlash, DB_PAGE_2_BUF1_TRF, page);
+	AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+	/*Update the SRAM buffer */
+	AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src, AdrInPage, size);
+
+	AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+
+	/* Erase page if a 128 Mbits device */
+	if (pDataFlash->pDevice->pages_number >= 16384) {
+		AT91F_PageErase(pDataFlash, page);
+		/* Rewrite the modified Sram Buffer in the main memory */
+		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+	}
+
+	/* Rewrite the modified Sram Buffer in the main memory */
+	return(AT91F_WriteBufferToMain(pDataFlash, DB_BUF1_PAGE_ERASE_PGM, (page*pDataFlash->pDevice->pages_size)));
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_DataFlashWrite					*/
+/* Object              :							*/
+/* Input Parameters    : <*src> = Source buffer					*/
+/*                     : <dest> = dataflash adress				*/
+/*                     : <size> = data buffer size				*/
+/*------------------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashWrite(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	int dest,
+	int size )
+{
+	unsigned int length;
+	unsigned int page;
+	unsigned int status;
+
+	AT91F_SpiEnable(pDataFlash->pDevice->cs);
+
+	if ( (dest + size) > (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number)))
+		return DATAFLASH_MEMORY_OVERFLOW;
+
+	/* If destination does not fit a page start address */
+	if ((dest % ((unsigned int)(pDataFlash->pDevice->pages_size)))  != 0 ) {
+		length = pDataFlash->pDevice->pages_size - (dest % ((unsigned int)(pDataFlash->pDevice->pages_size)));
+
+		if (size < length)
+			length = size;
+
+		if(!AT91F_PartialPageWrite(pDataFlash,src, dest, length))
+			return DATAFLASH_ERROR;
+
+		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+
+		/* Update size, source and destination pointers */
+		size -= length;
+		dest += length;
+		src += length;
+	}
+
+	while (( size - pDataFlash->pDevice->pages_size ) >= 0 ) {
+		/* program dataflash page */
+		page = (unsigned int)dest / (pDataFlash->pDevice->pages_size);
+
+		status = AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src, 0, pDataFlash->pDevice->pages_size);
+		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+
+		status = AT91F_PageErase(pDataFlash, page);
+		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+		if (!status)
+			return DATAFLASH_ERROR;
+
+		status = AT91F_WriteBufferToMain (pDataFlash, DB_BUF1_PAGE_PGM, dest);
+		if(!status)
+			return DATAFLASH_ERROR;
+
+		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+
+		/* Update size, source and destination pointers */
+		size -= pDataFlash->pDevice->pages_size ;
+		dest += pDataFlash->pDevice->pages_size ;
+		src  += pDataFlash->pDevice->pages_size ;
+	}
+
+	/* If still some bytes to read */
+	if ( size > 0 ) {
+		/* program dataflash page */
+		if(!AT91F_PartialPageWrite(pDataFlash, src, dest, size) )
+			return DATAFLASH_ERROR;
+
+		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
+	}
+	return DATAFLASH_OK;
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_DataFlashRead 					*/
+/* Object              : Read a block in dataflash				*/
+/* Input Parameters    : 							*/
+/* Return value		: 							*/
+/*------------------------------------------------------------------------------*/
+int AT91F_DataFlashRead(
+	AT91PS_DataFlash pDataFlash,
+	unsigned long addr,
+	unsigned long size,
+	char *buffer)
+{
+	unsigned long SizeToRead;
+
+	AT91F_SpiEnable(pDataFlash->pDevice->cs);
+
+	if(AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY) != DATAFLASH_OK)
+		return -1;
+
+	while (size) {
+		SizeToRead = (size < 0x8000)? size:0x8000;
+
+		if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY) != DATAFLASH_OK)
+			return -1;
+
+		if (AT91F_DataFlashContinuousRead (pDataFlash, addr, (uchar *) buffer, SizeToRead) != DATAFLASH_OK)
+			return -1;
+
+		size -= SizeToRead;
+		addr += SizeToRead;
+		buffer += SizeToRead;
+	}
+
+	return DATAFLASH_OK;
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name       : AT91F_DataflashProbe 					*/
+/* Object              : 							*/
+/* Input Parameters    : 							*/
+/* Return value	       : Dataflash status register				*/
+/*------------------------------------------------------------------------------*/
+int AT91F_DataflashProbe(int cs, AT91PS_DataflashDesc pDesc)
+{
+	AT91F_SpiEnable(cs);
+	AT91F_DataFlashGetStatus(pDesc);
+	return((pDesc->command[1] == 0xFF)? 0: pDesc->command[1] & 0x3C);
+}
+
+#endif
diff -urN u-boot-1.2.0-0rig/drivers/Makefile u-boot-1.2.0-atmel/drivers/Makefile
--- u-boot-1.2.0-0rig/drivers/Makefile	2007-01-07 00:13:11.000000000 +0100
+++ u-boot-1.2.0-atmel/drivers/Makefile	2007-03-24 20:07:32.000000000 +0100
@@ -27,7 +27,7 @@

 LIB	= $(obj)libdrivers.a

-COBJS	= 3c589.o 5701rls.o ali512x.o atmel_usart.o \
+COBJS	= 3c589.o 5701rls.o ali512x.o at45.o atmel_usart.o \
 	  bcm570x.o bcm570x_autoneg.o cfb_console.o cfi_flash.o \
 	  cs8900.o ct69000.o dataflash.o dc2114x.o dm9000x.o \
 	  e1000.o eepro100.o \
diff -urN u-boot-1.2.0/include/at45.h u-boot-1.2.0-atmel/include/at45.h
--- u-boot-1.2.0/include/at45.h	1970-01-01 01:00:00.000000000 +0100
+++ u-boot-1.2.0-atmel/include/at45.h	2007-03-24 20:07:33.000000000 +0100
@@ -0,0 +1,66 @@
+
+#ifndef	_AT45_H_
+#define	_AT45_H_
+#ifdef	DATAFLASH_MMC_SELECT
+extern	void AT91F_SelectMMC(void);
+extern	void AT91F_SelectSPI(void);
+extern	int AT91F_GetMuxStatus(void);
+#endif
+extern	void AT91F_SpiInit(void);
+extern	void AT91F_SpiEnable(int cs);
+extern	unsigned int AT91F_SpiWrite ( AT91PS_DataflashDesc pDesc );
+extern	AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
+		AT91PS_DataFlash pDataFlash,
+		unsigned char OpCode,
+		unsigned int CmdSize,
+		unsigned int DataflashAddress);
+extern	AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc);
+extern	AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc pDataFlashDesc, unsigned int timeout);
+extern	AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
+	AT91PS_DataFlash pDataFlash,
+	int src,
+	unsigned char *dataBuffer,
+	int sizeToRead );
+extern	AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	unsigned int dest,
+	unsigned int SizeToWrite);
+extern	AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned int page);
+extern	AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned char *dataBuffer,
+	unsigned int bufferAddress,
+	int SizeToWrite );
+extern	AT91S_DataFlashStatus AT91F_PageErase(
+	AT91PS_DataFlash pDataFlash,
+	unsigned int page);
+extern	AT91S_DataFlashStatus AT91F_BlockErase(
+	AT91PS_DataFlash pDataFlash,
+	unsigned int block);
+extern	AT91S_DataFlashStatus AT91F_WriteBufferToMain (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned int dest );
+extern	AT91S_DataFlashStatus AT91F_PartialPageWrite (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	unsigned int dest,
+	unsigned int size);
+extern	AT91S_DataFlashStatus AT91F_DataFlashWrite(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	int dest,
+	int size );
+extern	int AT91F_DataFlashRead(
+	AT91PS_DataFlash pDataFlash,
+	unsigned long addr,
+	unsigned long size,
+	char *buffer);
+extern	int AT91F_DataflashProbe(int cs, AT91PS_DataflashDesc pDesc);
+
+#endif

-- 
Best Regards,
Ulf Samuelsson
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[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.

[Wolfgang Denk]

In message <4609420A.6070103@atmel.com> you wrote:
>
>     Merge to two virtually identical files.
> 	"board/at91rm9200dk/at45.c"
> 	"board/cmc_pu2/at45.c" (one bug fixed first)
>     into "driver/at45.c" then move at91rm9200 specific functions from
>     "driver/at45.c" to:	"cpu/arm920t/at91rm9200/spi.c	
>     Update Makefiles to reflect change

Patches like this would be *much* easier to read if you used git,
where file rename operations are handled properly.


Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk
Office:  Kirchenstr. 5,       D-82194 Groebenzell,            Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"You can have my Unix system when you  pry  it  from  my  cold,  dead
fingers."                                                - Cal Keegan

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.

[Ulf Samuelsson]

Wolfgang Denk skrev:
> In message <4609420A.6070103@atmel.com> you wrote:
>>     Merge to two virtually identical files.
>> 	"board/at91rm9200dk/at45.c"
>> 	"board/cmc_pu2/at45.c" (one bug fixed first)
>>     into "driver/at45.c" then move at91rm9200 specific functions from
>>     "driver/at45.c" to:	"cpu/arm920t/at91rm9200/spi.c	
>>     Update Makefiles to reflect change
> 
> Patches like this would be *much* easier to read if you used git,
> where file rename operations are handled properly.
> 

True, but I am not there yet.
A script doing almost the same thing as the patch would look like.

#!/bin/bash
# split at45.c into two files
head	--lines=<-N>	board/at91rm9200dk/at45.c	> driver/at45.c
tail	--lines=<N>	board/at91rm9200dk/at45.c	> cpu/arm920t/at91rm9200/spi.c

rm -f	board/at91rm9200dk/at45.c			# remove the original file
rm -f	board/cmc_pu2/at45.c				# remove a copy of the original file.

Then the makefiles would have to be updated and a header file added (at45.h).

---------------------
So instead of each board building at45 in their local directory
they will build it in the driver directory.
The reason for splitting the file is that the original file
contains things which is specific for one CPU.
Moving it to a cpu specific directory makes it possible
to use the remainder of at45.c for other CPUs.

The U-Boot patches for at91sam926x chips use a common at45.c
in the driver directory to avoid duplicating it in the board
directory, but that patch cannot be applied the way u-boot works
today, since it will cause a conflict with the at45.c in the
board directory

The plan is that when the at91sam926x patches are applied
the directory structure will look like:


----------------------------
CURRENT U_BOOT
board
	at92rm9200dk
		at45.c
	cmc_pu2
		at45.c
----------------------------
PROPOSED U_BOOT
cpu
	arm920t
		at91rm9200
			at91rm9200_spi.c
	arm926ejs
		at91sam926x
			at91sam926x_spi.c
board
	at91rm9200df
	at91rm9200dk
	at91rm9200ek
	at91rm9260ek
	at91rm9261ek
	at91rm9263ek
	cmc_pu2
driver
	at45.c


----------------------------
U-BOOT IF PROPOSAL IS NOT ACCEPTED
board
	at91rm9200df
		at91rm9200_at45.c
	at91rm9200dk
		at91rm9200_at45.c
	at91rm9200ek
		at91rm9200_at45.c
	at91rm9260ek
		at91sam926x_at45.c
	at91rm9261ek
		at91sam926x_at45.c
	at91rm9263ek
		at91sam926x_at45.c
	cmc_pu2
		at91rm9200_at45.c

-- 
Best Regards,
Ulf Samuelsson
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[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.

[Ladislav Michl]

On Tue, Mar 27, 2007 at 06:37:04PM +0200, Wolfgang Denk wrote:
> In message <4609420A.6070103@atmel.com> you wrote:
> >
> >     Merge to two virtually identical files.
> > 	"board/at91rm9200dk/at45.c"
> > 	"board/cmc_pu2/at45.c" (one bug fixed first)
> >     into "driver/at45.c" then move at91rm9200 specific functions from
> >     "driver/at45.c" to:	"cpu/arm920t/at91rm9200/spi.c	
> >     Update Makefiles to reflect change
> 
> Patches like this would be *much* easier to read if you used git,
> where file rename operations are handled properly.

Well, lets see how it will work... (gzipped to fit into mailing list size limit))

Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>

Merge to two virtually identical files.
  "board/at91rm9200dk/at45.c"
  "board/cmc_pu2/at45.c"
into "driver/at45.c" then move at91rm9200 specific functions from
"driver/at45.c" to: "cpu/arm920t/at91rm9200/spi.c
Update Makefiles to reflect change

Best regards,
	ladis
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[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.

[Ladislav Michl]

On Tue, Mar 27, 2007 at 06:10:50PM +0200, Ulf Samuelsson wrote:
> Author: Ulf Samuelsson <ulf@atmel.com>
> Date: 2007-03-27
> Subject: "1.at45":(1 of  4) [PATCH] [ARM] Merge to two files into a common file and split.
> 
> CHANGELOG:
>     [PATCH] [ARM] 	Merge to two files into a common file and split.
> 
>     Merge to two virtually identical files.
> 	"board/at91rm9200dk/at45.c"
> 	"board/cmc_pu2/at45.c" (one bug fixed first)
>     into "driver/at45.c" then move at91rm9200 specific functions from
>     "driver/at45.c" to:	"cpu/arm920t/at91rm9200/spi.c	
>     Update Makefiles to reflect change

Here it goes again. Splitted into two patches for easier review. Second
one only removes board/cmc_pu2/at45.c

Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>

Consolidate AT45 dataflash driver.

commit 6aaa86b68e3f5307eeaa827ba3ee91dd1ed8477f
tree 9ba9d27cccdcbf743e8b3cc45b02adf14766daa3
parent 70124c2602ae2d4c5d3dba05b482d91548242de8
author Ladislav Michl <ladis@linux-mips.org> Wed, 23 May 2007 16:02:07 +0200
committer Ladislav Michl <ladis@linux-mips.org> Wed, 23 May 2007 16:02:07 +0200

 board/at91rm9200dk/Makefile     |    2 
 board/cmc_pu2/Makefile          |    2 
 cpu/arm920t/at91rm9200/Makefile |    2 
 cpu/arm920t/at91rm9200/spi.c    |  137 +++++++++
 drivers/Makefile                |    2 
 drivers/at45.c                  |  109 -------
 include/at45.h                  |   89 ++++++
 7 files changed, 231 insertions(+), 112 deletions(-)

diff --git a/board/at91rm9200dk/Makefile b/board/at91rm9200dk/Makefile
index 0fcafd9..99a959f 100644
--- a/board/at91rm9200dk/Makefile
+++ b/board/at91rm9200dk/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= at91rm9200dk.o at45.o flash.o
+COBJS	:= at91rm9200dk.o flash.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/board/cmc_pu2/Makefile b/board/cmc_pu2/Makefile
index d445f28..f7a1360 100644
--- a/board/cmc_pu2/Makefile
+++ b/board/cmc_pu2/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= cmc_pu2.o at45.o flash.o load_sernum_ethaddr.o
+COBJS	:= cmc_pu2.o flash.o load_sernum_ethaddr.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/cpu/arm920t/at91rm9200/Makefile b/cpu/arm920t/at91rm9200/Makefile
index 8d4e478..a7f306b 100644
--- a/cpu/arm920t/at91rm9200/Makefile
+++ b/cpu/arm920t/at91rm9200/Makefile
@@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(SOC).a
 
 COBJS	= bcm5221.o dm9161.o ether.o i2c.o interrupts.o \
-	  lxt972.o serial.o usb_ohci.o
+	  lxt972.o serial.o usb_ohci.o spi.o
 SOBJS	= lowlevel_init.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/cpu/arm920t/at91rm9200/spi.c b/cpu/arm920t/at91rm9200/spi.c
new file mode 100644
index 0000000..66cb14b
--- /dev/null
+++ b/cpu/arm920t/at91rm9200/spi.c
@@ -0,0 +1,137 @@
+/* Driver for ATMEL DataFlash support
+ * Author : Hamid Ikdoumi (Atmel)
+ *
+ * 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
+ *
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/hardware.h>
+
+#ifdef CONFIG_HAS_DATAFLASH
+#include <dataflash.h>
+
+#define AT91C_SPI_CLK	10000000	/* Max Value = 10MHz to be compliant to
+the Continuous Array Read function */
+
+/* AC Characteristics */
+/* DLYBS = tCSS = 250ns min and DLYBCT = tCSH = 250ns */
+#define DATAFLASH_TCSS	(0xC << 16)
+#define DATAFLASH_TCHS	(0x1 << 24)
+
+#define AT91C_TIMEOUT_WRDY			200000
+#define AT91C_SPI_PCS0_SERIAL_DATAFLASH		0xE     /* Chip Select 0 : NPCS0 %1110 */
+#define AT91C_SPI_PCS3_DATAFLASH_CARD		0x7     /* Chip Select 3 : NPCS3 %0111 */
+
+void AT91F_SpiInit(void) {
+
+/*-------------------------------------------------------------------*/
+/*	SPI DataFlash Init								*/
+/*-------------------------------------------------------------------*/
+	/* Configure PIOs */
+	AT91C_BASE_PIOA->PIO_ASR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
+				   AT91C_PA6_NPCS3 | AT91C_PA0_MISO | AT91C_PA2_SPCK;
+	AT91C_BASE_PIOA->PIO_PDR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
+				   AT91C_PA6_NPCS3 | AT91C_PA0_MISO | AT91C_PA2_SPCK;
+	/* Enable CLock */
+	AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SPI;
+
+	/* Reset the SPI */
+	AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST;
+
+	/* Configure SPI in Master Mode with No CS selected !!! */
+	AT91C_BASE_SPI->SPI_MR = AT91C_SPI_MSTR | AT91C_SPI_MODFDIS | AT91C_SPI_PCS;
+
+	/* Configure CS0 and CS3 */
+	*(AT91C_SPI_CSR + 0) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) | (AT91C_SPI_DLYBCT &
+	DATAFLASH_TCHS) | ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
+
+	*(AT91C_SPI_CSR + 3) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) | (AT91C_SPI_DLYBCT &
+	DATAFLASH_TCHS) | ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
+
+}
+
+void AT91F_SpiEnable(int cs) {
+	switch(cs) {
+	case 0:	/* Configure SPI CS0 for Serial DataFlash AT45DBxx */
+		AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
+		AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS0_SERIAL_DATAFLASH<<16) & AT91C_SPI_PCS);
+		break;
+	case 3:	/* Configure SPI CS3 for Serial DataFlash Card */
+		/* Set up PIO SDC_TYPE to switch on DataFlash Card and not MMC/SDCard */
+		AT91C_BASE_PIOB->PIO_PER = AT91C_PIO_PB7;	/* Set in PIO mode */
+		AT91C_BASE_PIOB->PIO_OER = AT91C_PIO_PB7;	/* Configure in output */
+		/* Clear Output */
+		AT91C_BASE_PIOB->PIO_CODR = AT91C_PIO_PB7;
+		/* Configure PCS */
+		AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
+		AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS3_DATAFLASH_CARD<<16) & AT91C_SPI_PCS);
+		break;
+	}
+
+	/* SPI_Enable */
+	AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN;
+}
+
+/*----------------------------------------------------------------------------*/
+/* \fn    AT91F_SpiWrite						      */
+/* \brief Set the PDC registers for a transfert				      */
+/*----------------------------------------------------------------------------*/
+unsigned int AT91F_SpiWrite ( AT91PS_DataflashDesc pDesc )
+{
+	unsigned int timeout;
+
+	pDesc->state = BUSY;
+
+	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
+
+	/* Initialize the Transmit and Receive Pointer */
+	AT91C_BASE_SPI->SPI_RPR = (unsigned int)pDesc->rx_cmd_pt ;
+	AT91C_BASE_SPI->SPI_TPR = (unsigned int)pDesc->tx_cmd_pt ;
+
+	/* Intialize the Transmit and Receive Counters */
+	AT91C_BASE_SPI->SPI_RCR = pDesc->rx_cmd_size;
+	AT91C_BASE_SPI->SPI_TCR = pDesc->tx_cmd_size;
+
+	if ( pDesc->tx_data_size != 0 ) {
+		/* Initialize the Next Transmit and Next Receive Pointer */
+		AT91C_BASE_SPI->SPI_RNPR = (unsigned int)pDesc->rx_data_pt ;
+		AT91C_BASE_SPI->SPI_TNPR = (unsigned int)pDesc->tx_data_pt ;
+
+		/* Intialize the Next Transmit and Next Receive Counters */
+		AT91C_BASE_SPI->SPI_RNCR = pDesc->rx_data_size ;
+		AT91C_BASE_SPI->SPI_TNCR = pDesc->tx_data_size ;
+	}
+
+	/* arm simple, non interrupt dependent timer */
+	reset_timer_masked();
+	timeout = 0;
+
+	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTEN + AT91C_PDC_RXTEN;
+	while(!(AT91C_BASE_SPI->SPI_SR & AT91C_SPI_RXBUFF) && ((timeout = get_timer_masked() ) < CFG_SPI_WRITE_TOUT));
+	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
+	pDesc->state = IDLE;
+
+	if (timeout >= CFG_SPI_WRITE_TOUT){
+		printf("Error Timeout\n\r");
+		return DATAFLASH_ERROR;
+	}
+
+	return DATAFLASH_OK;
+}
+
+#endif
diff --git a/drivers/Makefile b/drivers/Makefile
index d68cba6..8ae6bce 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)libdrivers.a
 
-COBJS	= 3c589.o 5701rls.o ali512x.o atmel_usart.o \
+COBJS	= 3c589.o 5701rls.o ali512x.o at45.o atmel_usart.o \
 	  bcm570x.o bcm570x_autoneg.o cfb_console.o cfi_flash.o \
 	  cs8900.o ct69000.o dataflash.o dc2114x.o dm9000x.o \
 	  e1000.o eepro100.o \
diff --git a/board/at91rm9200dk/at45.c b/drivers/at45.c
similarity index 83%
rename from board/at91rm9200dk/at45.c
rename to drivers/at45.c
index f886fe4..711fb51 100644
--- a/board/at91rm9200dk/at45.c
+++ b/drivers/at45.c
@@ -20,119 +20,12 @@
 
 #include <config.h>
 #include <common.h>
-#include <asm/hardware.h>
 
 #ifdef CONFIG_HAS_DATAFLASH
 #include <dataflash.h>
 
-#define AT91C_SPI_CLK	10000000	/* Max Value = 10MHz to be compliant to
-the Continuous Array Read function */
-
-/* AC Characteristics */
-/* DLYBS = tCSS = 250ns min and DLYBCT = tCSH = 250ns */
-#define DATAFLASH_TCSS	(0xC << 16)
-#define DATAFLASH_TCHS	(0x1 << 24)
 
 #define AT91C_TIMEOUT_WRDY			200000
-#define AT91C_SPI_PCS0_SERIAL_DATAFLASH		0xE     /* Chip Select 0 : NPCS0 %1110 */
-#define AT91C_SPI_PCS3_DATAFLASH_CARD		0x7     /* Chip Select 3 : NPCS3 %0111 */
-
-void AT91F_SpiInit(void) {
-
-/*-------------------------------------------------------------------*/
-/*	SPI DataFlash Init								*/
-/*-------------------------------------------------------------------*/
-	/* Configure PIOs */
-	AT91C_BASE_PIOA->PIO_ASR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
-				   AT91C_PA6_NPCS3 | AT91C_PA0_MISO | AT91C_PA2_SPCK;
-	AT91C_BASE_PIOA->PIO_PDR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
-				   AT91C_PA6_NPCS3 | AT91C_PA0_MISO | AT91C_PA2_SPCK;
-	/* Enable CLock */
-	AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SPI;
-
-	/* Reset the SPI */
-	AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST;
-
-	/* Configure SPI in Master Mode with No CS selected !!! */
-	AT91C_BASE_SPI->SPI_MR = AT91C_SPI_MSTR | AT91C_SPI_MODFDIS | AT91C_SPI_PCS;
-
-	/* Configure CS0 and CS3 */
-	*(AT91C_SPI_CSR + 0) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) | (AT91C_SPI_DLYBCT &
-	DATAFLASH_TCHS) | ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
-
-	*(AT91C_SPI_CSR + 3) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) | (AT91C_SPI_DLYBCT &
-	DATAFLASH_TCHS) | ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
-
-}
-
-void AT91F_SpiEnable(int cs) {
-	switch(cs) {
-	case 0:	/* Configure SPI CS0 for Serial DataFlash AT45DBxx */
-		AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
-		AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS0_SERIAL_DATAFLASH<<16) & AT91C_SPI_PCS);
-		break;
-	case 3:	/* Configure SPI CS3 for Serial DataFlash Card */
-		/* Set up PIO SDC_TYPE to switch on DataFlash Card and not MMC/SDCard */
-		AT91C_BASE_PIOB->PIO_PER = AT91C_PIO_PB7;	/* Set in PIO mode */
-		AT91C_BASE_PIOB->PIO_OER = AT91C_PIO_PB7;	/* Configure in output */
-		/* Clear Output */
-		AT91C_BASE_PIOB->PIO_CODR = AT91C_PIO_PB7;
-		/* Configure PCS */
-		AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
-		AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS3_DATAFLASH_CARD<<16) & AT91C_SPI_PCS);
-		break;
-	}
-
-	/* SPI_Enable */
-	AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN;
-}
-
-/*----------------------------------------------------------------------------*/
-/* \fn    AT91F_SpiWrite						      */
-/* \brief Set the PDC registers for a transfert				      */
-/*----------------------------------------------------------------------------*/
-unsigned int AT91F_SpiWrite ( AT91PS_DataflashDesc pDesc )
-{
-	unsigned int timeout;
-
-	pDesc->state = BUSY;
-
-	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
-
-	/* Initialize the Transmit and Receive Pointer */
-	AT91C_BASE_SPI->SPI_RPR = (unsigned int)pDesc->rx_cmd_pt ;
-	AT91C_BASE_SPI->SPI_TPR = (unsigned int)pDesc->tx_cmd_pt ;
-
-	/* Intialize the Transmit and Receive Counters */
-	AT91C_BASE_SPI->SPI_RCR = pDesc->rx_cmd_size;
-	AT91C_BASE_SPI->SPI_TCR = pDesc->tx_cmd_size;
-
-	if ( pDesc->tx_data_size != 0 ) {
-		/* Initialize the Next Transmit and Next Receive Pointer */
-		AT91C_BASE_SPI->SPI_RNPR = (unsigned int)pDesc->rx_data_pt ;
-		AT91C_BASE_SPI->SPI_TNPR = (unsigned int)pDesc->tx_data_pt ;
-
-		/* Intialize the Next Transmit and Next Receive Counters */
-		AT91C_BASE_SPI->SPI_RNCR = pDesc->rx_data_size ;
-		AT91C_BASE_SPI->SPI_TNCR = pDesc->tx_data_size ;
-	}
-
-	/* arm simple, non interrupt dependent timer */
-	reset_timer_masked();
-	timeout = 0;
-
-	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTEN + AT91C_PDC_RXTEN;
-	while(!(AT91C_BASE_SPI->SPI_SR & AT91C_SPI_RXBUFF) && ((timeout = get_timer_masked() ) < CFG_SPI_WRITE_TOUT));
-	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
-	pDesc->state = IDLE;
-
-	if (timeout >= CFG_SPI_WRITE_TOUT){
-		printf("Error Timeout\n\r");
-		return DATAFLASH_ERROR;
-	}
-
-	return DATAFLASH_OK;
-}
 
 
 /*----------------------------------------------------------------------*/
@@ -593,7 +486,7 @@ int AT91F_DataFlashRead(
 		if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY) != DATAFLASH_OK)
 			return -1;
 
-		if (AT91F_DataFlashContinuousRead (pDataFlash, addr, (uchar *)buffer, SizeToRead) != DATAFLASH_OK)
+		if (AT91F_DataFlashContinuousRead (pDataFlash, addr, (uchar *) buffer, SizeToRead) != DATAFLASH_OK)
 			return -1;
 
 		size -= SizeToRead;
diff --git a/include/at45.h b/include/at45.h
new file mode 100644
index 0000000..67fa7ca
--- /dev/null
+++ b/include/at45.h
@@ -0,0 +1,89 @@
+/*
+ * (C) Copyright 2007
+ * 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
+ */
+
+#ifndef	_AT45_H_
+#define	_AT45_H_
+
+#ifdef	DATAFLASH_MMC_SELECT
+extern	void AT91F_SelectMMC(void);
+extern	void AT91F_SelectSPI(void);
+extern	int AT91F_GetMuxStatus(void);
+#endif
+extern	void AT91F_SpiInit(void);
+extern	void AT91F_SpiEnable(int cs);
+extern	unsigned int AT91F_SpiWrite ( AT91PS_DataflashDesc pDesc );
+extern	AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
+		AT91PS_DataFlash pDataFlash,
+		unsigned char OpCode,
+		unsigned int CmdSize,
+		unsigned int DataflashAddress);
+extern	AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc);
+extern	AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc pDataFlashDesc, unsigned int timeout);
+extern	AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
+	AT91PS_DataFlash pDataFlash,
+	int src,
+	unsigned char *dataBuffer,
+	int sizeToRead );
+extern	AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	unsigned int dest,
+	unsigned int SizeToWrite);
+extern	AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned int page);
+extern	AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned char *dataBuffer,
+	unsigned int bufferAddress,
+	int SizeToWrite );
+extern	AT91S_DataFlashStatus AT91F_PageErase(
+	AT91PS_DataFlash pDataFlash,
+	unsigned int page);
+extern	AT91S_DataFlashStatus AT91F_BlockErase(
+	AT91PS_DataFlash pDataFlash,
+	unsigned int block);
+extern	AT91S_DataFlashStatus AT91F_WriteBufferToMain (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char BufferCommand,
+	unsigned int dest );
+extern	AT91S_DataFlashStatus AT91F_PartialPageWrite (
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	unsigned int dest,
+	unsigned int size);
+extern	AT91S_DataFlashStatus AT91F_DataFlashWrite(
+	AT91PS_DataFlash pDataFlash,
+	unsigned char *src,
+	int dest,
+	int size );
+extern	int AT91F_DataFlashRead(
+	AT91PS_DataFlash pDataFlash,
+	unsigned long addr,
+	unsigned long size,
+	char *buffer);
+extern	int AT91F_DataflashProbe(int cs, AT91PS_DataflashDesc pDesc);
+
+#endif

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.

[Ladislav Michl]

On Mon, Jun 04, 2007 at 02:17:33PM +0200, ladis wrote:
> On Tue, Mar 27, 2007 at 06:10:50PM +0200, Ulf Samuelsson wrote:
> Author: Ulf Samuelsson <ulf@atmel.com>
> Date: 2007-03-27
> Subject: "1.at45":(1 of  4) [PATCH] [ARM] Merge to two files into a common file and split.
> 
> CHANGELOG:
>     [PATCH] [ARM] 	Merge to two files into a common file and split.
> 
>     Merge to two virtually identical files.
> 	"board/at91rm9200dk/at45.c"
> 	"board/cmc_pu2/at45.c" (one bug fixed first)
>     into "driver/at45.c" then move at91rm9200 specific functions from
>     "driver/at45.c" to:	"cpu/arm920t/at91rm9200/spi.c	
>     Update Makefiles to reflect change

Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>

Consolidate AT45 dataflash driver. Remove no longer used
board/cmc_pu2/at45.c


diff --git a/board/cmc_pu2/at45.c b/board/cmc_pu2/at45.c
deleted file mode 100644
index 3c00132..0000000
--- a/board/cmc_pu2/at45.c
+++ /dev/null
@@ -1,621 +0,0 @@
-/* Driver for ATMEL DataFlash support
- * Author : Hamid Ikdoumi (Atmel)
- *
- * 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
- *
- */
-
-#include <config.h>
-#include <common.h>
-#include <asm/hardware.h>
-
-#ifdef CONFIG_HAS_DATAFLASH
-#include <dataflash.h>
-
-#define AT91C_SPI_CLK	10000000	/* Max Value = 10MHz to be compliant to
-the Continuous Array Read function */
-
-/* AC Characteristics */
-/* DLYBS = tCSS = 250ns min and DLYBCT = tCSH = 250ns */
-#define DATAFLASH_TCSS	(0xC << 16)
-#define DATAFLASH_TCHS	(0x1 << 24)
-
-#define AT91C_TIMEOUT_WRDY			200000
-#define AT91C_SPI_PCS0_SERIAL_DATAFLASH		0xE     /* Chip Select 0 : NPCS0 %1110 */
-#define AT91C_SPI_PCS3_DATAFLASH_CARD		0x7     /* Chip Select 3 : NPCS3 %0111 */
-
-void AT91F_SpiInit(void) {
-
-/*-------------------------------------------------------------------*/
-/*	SPI DataFlash Init								*/
-/*-------------------------------------------------------------------*/
-	/* Configure PIOs */
-	AT91C_BASE_PIOA->PIO_ASR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
-				   AT91C_PA6_NPCS3 | AT91C_PA0_MISO | AT91C_PA2_SPCK;
-	AT91C_BASE_PIOA->PIO_PDR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 | AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
-				   AT91C_PA6_NPCS3 | AT91C_PA0_MISO | AT91C_PA2_SPCK;
-	/* Enable CLock */
-	AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SPI;
-
-	/* Reset the SPI */
-	AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST;
-
-	/* Configure SPI in Master Mode with No CS selected !!! */
-	AT91C_BASE_SPI->SPI_MR = AT91C_SPI_MSTR | AT91C_SPI_MODFDIS | AT91C_SPI_PCS;
-
-	/* Configure CS0 and CS3 */
-	*(AT91C_SPI_CSR + 0) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) | (AT91C_SPI_DLYBCT &
-	DATAFLASH_TCHS) | ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
-
-	*(AT91C_SPI_CSR + 3) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) | (AT91C_SPI_DLYBCT &
-	DATAFLASH_TCHS) | ((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
-
-}
-
-void AT91F_SpiEnable(int cs) {
-	switch(cs) {
-	case 0:	/* Configure SPI CS0 for Serial DataFlash AT45DBxx */
-		AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
-		AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS0_SERIAL_DATAFLASH<<16) & AT91C_SPI_PCS);
-		break;
-	case 3:	/* Configure SPI CS3 for Serial DataFlash Card */
-		/* Set up PIO SDC_TYPE to switch on DataFlash Card and not MMC/SDCard */
-		AT91C_BASE_PIOB->PIO_PER = AT91C_PIO_PB7;	/* Set in PIO mode */
-		AT91C_BASE_PIOB->PIO_OER = AT91C_PIO_PB7;	/* Configure in output */
-		/* Clear Output */
-		AT91C_BASE_PIOB->PIO_CODR = AT91C_PIO_PB7;
-		/* Configure PCS */
-		AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
-		AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS3_DATAFLASH_CARD<<16) & AT91C_SPI_PCS);
-		break;
-	}
-
-	/* SPI_Enable */
-	AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN;
-}
-
-/*----------------------------------------------------------------------------*/
-/* \fn    AT91F_SpiWrite						      */
-/* \brief Set the PDC registers for a transfert				      */
-/*----------------------------------------------------------------------------*/
-unsigned int AT91F_SpiWrite ( AT91PS_DataflashDesc pDesc )
-{
-	unsigned int timeout;
-
-	pDesc->state = BUSY;
-
-	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
-
-	/* Initialize the Transmit and Receive Pointer */
-	AT91C_BASE_SPI->SPI_RPR = (unsigned int)pDesc->rx_cmd_pt ;
-	AT91C_BASE_SPI->SPI_TPR = (unsigned int)pDesc->tx_cmd_pt ;
-
-	/* Intialize the Transmit and Receive Counters */
-	AT91C_BASE_SPI->SPI_RCR = pDesc->rx_cmd_size;
-	AT91C_BASE_SPI->SPI_TCR = pDesc->tx_cmd_size;
-
-	if ( pDesc->tx_data_size != 0 ) {
-		/* Initialize the Next Transmit and Next Receive Pointer */
-		AT91C_BASE_SPI->SPI_RNPR = (unsigned int)pDesc->rx_data_pt ;
-		AT91C_BASE_SPI->SPI_TNPR = (unsigned int)pDesc->tx_data_pt ;
-
-		/* Intialize the Next Transmit and Next Receive Counters */
-		AT91C_BASE_SPI->SPI_RNCR = pDesc->rx_data_size ;
-		AT91C_BASE_SPI->SPI_TNCR = pDesc->tx_data_size ;
-	}
-
-	/* arm simple, non interrupt dependent timer */
-	reset_timer_masked();
-	timeout = 0;
-
-	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTEN + AT91C_PDC_RXTEN;
-	while(!(AT91C_BASE_SPI->SPI_SR & AT91C_SPI_RXBUFF) && ((timeout = get_timer_masked() ) < CFG_SPI_WRITE_TOUT));
-	AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
-	pDesc->state = IDLE;
-
-	if (timeout >= CFG_SPI_WRITE_TOUT){
-		printf("Error Timeout\n\r");
-		return DATAFLASH_ERROR;
-	}
-
-	return DATAFLASH_OK;
-}
-
-
-/*----------------------------------------------------------------------*/
-/* \fn    AT91F_DataFlashSendCommand					*/
-/* \brief Generic function to send a command to the dataflash		*/
-/*----------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
-	AT91PS_DataFlash pDataFlash,
-	unsigned char OpCode,
-	unsigned int CmdSize,
-	unsigned int DataflashAddress)
-{
-    unsigned int adr;
-
-	if ( (pDataFlash->pDataFlashDesc->state) != IDLE)
-		return DATAFLASH_BUSY;
-
-	/* process the address to obtain page address and byte address */
-	adr = ((DataflashAddress / (pDataFlash->pDevice->pages_size)) << pDataFlash->pDevice->page_offset) + (DataflashAddress % (pDataFlash->pDevice->pages_size));
-
-	/* fill the  command  buffer */
-	pDataFlash->pDataFlashDesc->command[0] = OpCode;
-	if (pDataFlash->pDevice->pages_number >= 16384) {
-		pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x0F000000) >> 24);
-		pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x00FF0000) >> 16);
-		pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((adr & 0x0000FF00) >> 8);
-		pDataFlash->pDataFlashDesc->command[4] = (unsigned char)(adr & 0x000000FF);
-	} else {
-		pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x00FF0000) >> 16);
-		pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x0000FF00) >> 8);
-		pDataFlash->pDataFlashDesc->command[3] = (unsigned char)(adr & 0x000000FF) ;
-		pDataFlash->pDataFlashDesc->command[4] = 0;
-	}
-	pDataFlash->pDataFlashDesc->command[5] = 0;
-	pDataFlash->pDataFlashDesc->command[6] = 0;
-	pDataFlash->pDataFlashDesc->command[7] = 0;
-
-	/* Initialize the SpiData structure for the spi write fuction */
-	pDataFlash->pDataFlashDesc->tx_cmd_pt   =  pDataFlash->pDataFlashDesc->command ;
-	pDataFlash->pDataFlashDesc->tx_cmd_size =  CmdSize ;
-	pDataFlash->pDataFlashDesc->rx_cmd_pt   =  pDataFlash->pDataFlashDesc->command ;
-	pDataFlash->pDataFlashDesc->rx_cmd_size =  CmdSize ;
-
-	/* send the command and read the data */
-	return AT91F_SpiWrite (pDataFlash->pDataFlashDesc);
-}
-
-
-/*----------------------------------------------------------------------*/
-/* \fn    AT91F_DataFlashGetStatus					*/
-/* \brief Read the status register of the dataflash			*/
-/*----------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc)
-{
-	AT91S_DataFlashStatus status;
-
-	/* if a transfert is in progress ==> return 0 */
-	if( (pDesc->state) != IDLE)
-		return DATAFLASH_BUSY;
-
-	/* first send the read status command (D7H) */
-	pDesc->command[0] = DB_STATUS;
-	pDesc->command[1] = 0;
-
-	pDesc->DataFlash_state  = GET_STATUS;
-	pDesc->tx_data_size 	= 0 ;	/* Transmit the command and receive response */
-	pDesc->tx_cmd_pt 		= pDesc->command ;
-	pDesc->rx_cmd_pt 		= pDesc->command ;
-	pDesc->rx_cmd_size 		= 2 ;
-	pDesc->tx_cmd_size 		= 2 ;
-	status = AT91F_SpiWrite (pDesc);
-
-	pDesc->DataFlash_state = *( (unsigned char *) (pDesc->rx_cmd_pt) +1);
-
-	return status;
-}
-
-
-/*----------------------------------------------------------------------*/
-/* \fn    AT91F_DataFlashWaitReady					*/
-/* \brief wait for dataflash ready (bit7 of the status register == 1)	*/
-/*----------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc pDataFlashDesc, unsigned int timeout)
-{
-	pDataFlashDesc->DataFlash_state = IDLE;
-
-	do {
-		AT91F_DataFlashGetStatus(pDataFlashDesc);
-		timeout--;
-	} while( ((pDataFlashDesc->DataFlash_state & 0x80) != 0x80) && (timeout > 0) );
-
-	if((pDataFlashDesc->DataFlash_state & 0x80) != 0x80)
-		return DATAFLASH_ERROR;
-
-	return DATAFLASH_OK;
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_DataFlashContinuousRead 				*/
-/* Object              : Continuous stream Read 				*/
-/* Input Parameters    : DataFlash Service					*/
-/*						: <src> = dataflash address	*/
-/*                     : <*dataBuffer> = data buffer pointer			*/
-/*                     : <sizeToRead> = data buffer size			*/
-/* Return value		: State of the dataflash				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
-	AT91PS_DataFlash pDataFlash,
-	int src,
-	unsigned char *dataBuffer,
-	int sizeToRead )
-{
-	AT91S_DataFlashStatus status;
-	/* Test the size to read in the device */
-	if ( (src + sizeToRead) > (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number)))
-		return DATAFLASH_MEMORY_OVERFLOW;
-
-	pDataFlash->pDataFlashDesc->rx_data_pt = dataBuffer;
-	pDataFlash->pDataFlashDesc->rx_data_size = sizeToRead;
-	pDataFlash->pDataFlashDesc->tx_data_pt = dataBuffer;
-	pDataFlash->pDataFlashDesc->tx_data_size = sizeToRead;
-
-	status = AT91F_DataFlashSendCommand (pDataFlash, DB_CONTINUOUS_ARRAY_READ, 8, src);
-	/* Send the command to the dataflash */
-	return(status);
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_DataFlashPagePgmBuf				*/
-/* Object              : Main memory page program through buffer 1 or buffer 2	*/
-/* Input Parameters    : DataFlash Service					*/
-/*						: <*src> = Source buffer	*/
-/*                     : <dest> = dataflash destination address			*/
-/*                     : <SizeToWrite> = data buffer size			*/
-/* Return value		: State of the dataflash				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf(
-	AT91PS_DataFlash pDataFlash,
-	unsigned char *src,
-	unsigned int dest,
-	unsigned int SizeToWrite)
-{
-	int cmdsize;
-	pDataFlash->pDataFlashDesc->tx_data_pt = src ;
-	pDataFlash->pDataFlashDesc->tx_data_size = SizeToWrite ;
-	pDataFlash->pDataFlashDesc->rx_data_pt = src;
-	pDataFlash->pDataFlashDesc->rx_data_size = SizeToWrite;
-
-	cmdsize = 4;
-	/* Send the command to the dataflash */
-	if (pDataFlash->pDevice->pages_number >= 16384)
-		cmdsize = 5;
-	return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_PGM_BUF1, cmdsize, dest));
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_MainMemoryToBufferTransfert			*/
-/* Object              : Read a page in the SRAM Buffer 1 or 2			*/
-/* Input Parameters    : DataFlash Service					*/
-/*                     : Page concerned						*/
-/*                     : 							*/
-/* Return value		: State of the dataflash				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
-	AT91PS_DataFlash pDataFlash,
-	unsigned char BufferCommand,
-	unsigned int page)
-{
-	int cmdsize;
-	/* Test if the buffer command is legal */
-	if ((BufferCommand != DB_PAGE_2_BUF1_TRF) && (BufferCommand != DB_PAGE_2_BUF2_TRF))
-		return DATAFLASH_BAD_COMMAND;
-
-	/* no data to transmit or receive */
-	pDataFlash->pDataFlashDesc->tx_data_size = 0;
-	cmdsize = 4;
-	if (pDataFlash->pDevice->pages_number >= 16384)
-		cmdsize = 5;
-	return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize, page*pDataFlash->pDevice->pages_size));
-}
-
-
-/*----------------------------------------------------------------------------- */
-/* Function Name       : AT91F_DataFlashWriteBuffer				*/
-/* Object              : Write data to the internal sram buffer 1 or 2		*/
-/* Input Parameters    : DataFlash Service					*/
-/*			: <BufferCommand> = command to write buffer1 or buffer2	*/
-/*                     : <*dataBuffer> = data buffer to write			*/
-/*                     : <bufferAddress> = address in the internal buffer	*/
-/*                     : <SizeToWrite> = data buffer size			*/
-/* Return value		: State of the dataflash				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer (
-	AT91PS_DataFlash pDataFlash,
-	unsigned char BufferCommand,
-	unsigned char *dataBuffer,
-	unsigned int bufferAddress,
-	int SizeToWrite )
-{
-	int cmdsize;
-	/* Test if the buffer command is legal */
-	if ((BufferCommand != DB_BUF1_WRITE) && (BufferCommand != DB_BUF2_WRITE))
-		return DATAFLASH_BAD_COMMAND;
-
-	/* buffer address must be lower than page size */
-	if (bufferAddress > pDataFlash->pDevice->pages_size)
-		return DATAFLASH_BAD_ADDRESS;
-
-	if ( (pDataFlash->pDataFlashDesc->state)  != IDLE)
-		return DATAFLASH_BUSY;
-
-	/* Send first Write Command */
-	pDataFlash->pDataFlashDesc->command[0] = BufferCommand;
-	pDataFlash->pDataFlashDesc->command[1] = 0;
-	if (pDataFlash->pDevice->pages_number >= 16384) {
-	    	pDataFlash->pDataFlashDesc->command[2] = 0;
-	    	pDataFlash->pDataFlashDesc->command[3] = (unsigned char)(((unsigned int)(bufferAddress &  pDataFlash->pDevice->byte_mask)) >> 8) ;
-	    	pDataFlash->pDataFlashDesc->command[4] = (unsigned char)((unsigned int)bufferAddress  & 0x00FF) ;
-		cmdsize = 5;
-	} else {
-	    	pDataFlash->pDataFlashDesc->command[2] = (unsigned char)(((unsigned int)(bufferAddress &  pDataFlash->pDevice->byte_mask)) >> 8) ;
-	    	pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((unsigned int)bufferAddress  & 0x00FF) ;
-	    	pDataFlash->pDataFlashDesc->command[4] = 0;
-		cmdsize = 4;
-	}
-
-	pDataFlash->pDataFlashDesc->tx_cmd_pt 	 = pDataFlash->pDataFlashDesc->command ;
-	pDataFlash->pDataFlashDesc->tx_cmd_size = cmdsize ;
-	pDataFlash->pDataFlashDesc->rx_cmd_pt 	 = pDataFlash->pDataFlashDesc->command ;
-	pDataFlash->pDataFlashDesc->rx_cmd_size = cmdsize ;
-
-	pDataFlash->pDataFlashDesc->rx_data_pt 	= dataBuffer ;
-	pDataFlash->pDataFlashDesc->tx_data_pt 	= dataBuffer ;
-	pDataFlash->pDataFlashDesc->rx_data_size 	= SizeToWrite ;
-	pDataFlash->pDataFlashDesc->tx_data_size 	= SizeToWrite ;
-
-	return AT91F_SpiWrite(pDataFlash->pDataFlashDesc);
-}
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_PageErase                                        */
-/* Object              : Erase a page 						*/
-/* Input Parameters    : DataFlash Service					*/
-/*                     : Page concerned						*/
-/*                     : 							*/
-/* Return value		: State of the dataflash				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_PageErase(
-	AT91PS_DataFlash pDataFlash,
-	unsigned int page)
-{
-	int cmdsize;
-	/* Test if the buffer command is legal */
-	/* no data to transmit or receive */
-    	pDataFlash->pDataFlashDesc->tx_data_size = 0;
-
-	cmdsize = 4;
-	if (pDataFlash->pDevice->pages_number >= 16384)
-		cmdsize = 5;
-	return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_ERASE, cmdsize, page*pDataFlash->pDevice->pages_size));
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_BlockErase                                       */
-/* Object              : Erase a Block 						*/
-/* Input Parameters    : DataFlash Service					*/
-/*                     : Page concerned						*/
-/*                     : 							*/
-/* Return value		: State of the dataflash				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_BlockErase(
-	AT91PS_DataFlash pDataFlash,
-	unsigned int block)
-{
-	int cmdsize;
-	/* Test if the buffer command is legal */
-	/* no data to transmit or receive */
-    	pDataFlash->pDataFlashDesc->tx_data_size = 0;
-	cmdsize = 4;
-	if (pDataFlash->pDevice->pages_number >= 16384)
-		cmdsize = 5;
-	return(AT91F_DataFlashSendCommand (pDataFlash, DB_BLOCK_ERASE,cmdsize, block*8*pDataFlash->pDevice->pages_size));
-}
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_WriteBufferToMain				*/
-/* Object              : Write buffer to the main memory			*/
-/* Input Parameters    : DataFlash Service					*/
-/*		: <BufferCommand> = command to send to buffer1 or buffer2	*/
-/*                     : <dest> = main memory address				*/
-/* Return value		: State of the dataflash				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_WriteBufferToMain (
-	AT91PS_DataFlash pDataFlash,
-	unsigned char BufferCommand,
-	unsigned int dest )
-{
-	int cmdsize;
-	/* Test if the buffer command is correct */
-	if ((BufferCommand != DB_BUF1_PAGE_PGM) &&
-	    (BufferCommand != DB_BUF1_PAGE_ERASE_PGM) &&
-	    (BufferCommand != DB_BUF2_PAGE_PGM) &&
-	    (BufferCommand != DB_BUF2_PAGE_ERASE_PGM) )
-		return DATAFLASH_BAD_COMMAND;
-
-	/* no data to transmit or receive */
-	pDataFlash->pDataFlashDesc->tx_data_size = 0;
-
-	cmdsize = 4;
-	if (pDataFlash->pDevice->pages_number >= 16384)
-		cmdsize = 5;
-	/* Send the command to the dataflash */
-	return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize, dest));
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_PartialPageWrite					*/
-/* Object              : Erase partielly a page					*/
-/* Input Parameters    : <page> = page number					*/
-/*			: <AdrInpage> = adr to begin the fading			*/
-/*                     : <length> = Number of bytes to erase			*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_PartialPageWrite (
-	AT91PS_DataFlash pDataFlash,
-	unsigned char *src,
-	unsigned int dest,
-	unsigned int size)
-{
-	unsigned int page;
-	unsigned int AdrInPage;
-
-	page = dest / (pDataFlash->pDevice->pages_size);
-	AdrInPage = dest % (pDataFlash->pDevice->pages_size);
-
-	/* Read the contents of the page in the Sram Buffer */
-	AT91F_MainMemoryToBufferTransfert(pDataFlash, DB_PAGE_2_BUF1_TRF, page);
-	AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-	/*Update the SRAM buffer */
-	AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src, AdrInPage, size);
-
-	AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-
-	/* Erase page if a 128 Mbits device */
-	if (pDataFlash->pDevice->pages_number >= 16384) {
-		AT91F_PageErase(pDataFlash, page);
-		/* Rewrite the modified Sram Buffer in the main memory */
-		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-	}
-
-	/* Rewrite the modified Sram Buffer in the main memory */
-	return(AT91F_WriteBufferToMain(pDataFlash, DB_BUF1_PAGE_ERASE_PGM, (page*pDataFlash->pDevice->pages_size)));
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_DataFlashWrite					*/
-/* Object              :							*/
-/* Input Parameters    : <*src> = Source buffer					*/
-/*                     : <dest> = dataflash adress				*/
-/*                     : <size> = data buffer size				*/
-/*------------------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashWrite(
-	AT91PS_DataFlash pDataFlash,
-	unsigned char *src,
-	int dest,
-	int size )
-{
-	unsigned int length;
-	unsigned int page;
-	unsigned int status;
-
-	AT91F_SpiEnable(pDataFlash->pDevice->cs);
-
-	if ( (dest + size) > (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number)))
-		return DATAFLASH_MEMORY_OVERFLOW;
-
-	/* If destination does not fit a page start address */
-	if ((dest % ((unsigned int)(pDataFlash->pDevice->pages_size)))  != 0 ) {
-		length = pDataFlash->pDevice->pages_size - (dest % ((unsigned int)(pDataFlash->pDevice->pages_size)));
-
-		if (size < length)
-			length = size;
-
-		if(!AT91F_PartialPageWrite(pDataFlash,src, dest, length))
-			return DATAFLASH_ERROR;
-
-		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-
-		/* Update size, source and destination pointers */
-		size -= length;
-		dest += length;
-		src += length;
-	}
-
-	while (( size - pDataFlash->pDevice->pages_size ) >= 0 ) {
-		/* program dataflash page */
-		page = (unsigned int)dest / (pDataFlash->pDevice->pages_size);
-
-		status = AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src, 0, pDataFlash->pDevice->pages_size);
-		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-
-		status = AT91F_PageErase(pDataFlash, page);
-		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-		if (!status)
-			return DATAFLASH_ERROR;
-
-		status = AT91F_WriteBufferToMain (pDataFlash, DB_BUF1_PAGE_PGM, dest);
-		if(!status)
-			return DATAFLASH_ERROR;
-
-		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-
-		/* Update size, source and destination pointers */
-		size -= pDataFlash->pDevice->pages_size ;
-		dest += pDataFlash->pDevice->pages_size ;
-		src  += pDataFlash->pDevice->pages_size ;
-	}
-
-	/* If still some bytes to read */
-	if ( size > 0 ) {
-		/* program dataflash page */
-		if(!AT91F_PartialPageWrite(pDataFlash, src, dest, size) )
-			return DATAFLASH_ERROR;
-
-		AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY);
-	}
-	return DATAFLASH_OK;
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_DataFlashRead 					*/
-/* Object              : Read a block in dataflash				*/
-/* Input Parameters    : 							*/
-/* Return value		: 							*/
-/*------------------------------------------------------------------------------*/
-int AT91F_DataFlashRead(
-	AT91PS_DataFlash pDataFlash,
-	unsigned long addr,
-	unsigned long size,
-	char *buffer)
-{
-	unsigned long SizeToRead;
-
-	AT91F_SpiEnable(pDataFlash->pDevice->cs);
-
-	if(AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY) != DATAFLASH_OK)
-		return -1;
-
-	while (size) {
-		SizeToRead = (size < 0x8000)? size:0x8000;
-
-		if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY) != DATAFLASH_OK)
-			return -1;
-
-		if (AT91F_DataFlashContinuousRead (pDataFlash, addr, buffer, SizeToRead) != DATAFLASH_OK)
-			return -1;
-
-		size -= SizeToRead;
-		addr += SizeToRead;
-		buffer += SizeToRead;
-	}
-
-	return DATAFLASH_OK;
-}
-
-
-/*------------------------------------------------------------------------------*/
-/* Function Name       : AT91F_DataflashProbe 					*/
-/* Object              : 							*/
-/* Input Parameters    : 							*/
-/* Return value	       : Dataflash status register				*/
-/*------------------------------------------------------------------------------*/
-int AT91F_DataflashProbe(int cs, AT91PS_DataflashDesc pDesc)
-{
-	AT91F_SpiEnable(cs);
-	AT91F_DataFlashGetStatus(pDesc);
-	return((pDesc->command[1] == 0xFF)? 0: pDesc->command[1] & 0x3C);
-}
-
-#endif

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to twofiles into a common file and split.

[Martin Krause]

u-boot-users-bounces at lists.sourceforge.net wrote on :
> On Tue, Mar 27, 2007 at 06:10:50PM +0200, Ulf Samuelsson wrote:
> > Author: Ulf Samuelsson <ulf@atmel.com>
> > Date: 2007-03-27
> > Subject: "1.at45":(1 of  4) [PATCH] [ARM] Merge to two files into a
> > common file and split. 
> > 
> > CHANGELOG:
> >     [PATCH] [ARM] 	Merge to two files into a common file and split.
> > 
> >     Merge to two virtually identical files.
> > 	"board/at91rm9200dk/at45.c"
> > 	"board/cmc_pu2/at45.c" (one bug fixed first)
> >     into "driver/at45.c" then move at91rm9200 specific functions
> >     from "driver/at45.c" to:	"cpu/arm920t/at91rm9200/spi.c
> >     Update Makefiles to reflect change
> 
> Here it goes again. Splitted into two patches for easier review.
> Second 
> one only removes board/cmc_pu2/at45.c
> 
> Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
> Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
> 
> Consolidate AT45 dataflash driver.

As a user of the cmc_pu2 board I think this changes are OK. I wonder,
why the at45.c driver actually is part of the cmc_pu2 porting at all?
As far as I could remember, there is no external SPI flash on this
board (only NOR Flash is soldered). Or could this driver be used to
access some AT91RM920 internal flash?

Regards,
Martin

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to twofiles into a common file and split.

[Andreas Schweigstill]

Hello!

Martin Krause schrieb:
> Or could this driver be used to
> access some AT91RM920 internal flash?

No, the AT91RM9200 doesn't contain any Flash memory. The start-up code
is located in mask ROM and can't be reprogrammed. Since it is mapped to
normal memory address space no special software has to be used to read
from the mask ROM.

With best regards
Andreas Schweigstill

-- 
Dipl.-Phys. Andreas Schweigstill
Schweigstill IT | Embedded Systems
Schauenburgerstra?e 116, D-24118 Kiel, Germany
Phone: (+49) 431 5606-435, Fax: (+49) 431 5606-436
Mobile: (+49) 171 6921973, Web: http://www.schweigstill.de/

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to twofiles into a common file and split.

[Martin Krause]

u-boot-users-bounces at lists.sourceforge.net wrote on :
> Hello!
> 
> Martin Krause schrieb:
> > Or could this driver be used to
> > access some AT91RM920 internal flash?
> 
> No, the AT91RM9200 doesn't contain any Flash memory. The start-up code
> is located in mask ROM and can't be reprogrammed. Since it is mapped
> to normal memory address space no special software has to be used to
> read from the mask ROM.

OK, then I think the at45.c driver isn't needed for the cmc_pu2 board
at all (because there exists no dataflash hardware on this board, which 
could be supported by the driver). Maybe this slipped through when the 
cmc_pu2 board was derived from the at91rm9200dk?

Regards,
Martin

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to twofiles into a common file and split.

[Ladislav Michl]

On Mon, Jun 04, 2007 at 04:47:53PM +0200, Martin Krause wrote:
> OK, then I think the at45.c driver isn't needed for the cmc_pu2 board
> at all (because there exists no dataflash hardware on this board, which 
> could be supported by the driver). Maybe this slipped through when the 
> cmc_pu2 board was derived from the at91rm9200dk?

It seems so then... And now, when we know the only board affected by
this change is at91rm9200dk, could we move forward and apply this patch?
Cleanup of cmc_pu2's config file will follow in separate patch.

Best regards,
	ladis

[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to twofiles into a common file and split.

[Nelson Castillo]

On 6/4/07, Ladislav Michl <ladis@linux-mips.org> wrote:
> On Mon, Jun 04, 2007 at 04:47:53PM +0200, Martin Krause wrote:
> > OK, then I think the at45.c driver isn't needed for the cmc_pu2 board
> > at all (because there exists no dataflash hardware on this board, which
> > could be supported by the driver). Maybe this slipped through when the
> > cmc_pu2 board was derived from the at91rm9200dk?
> It seems so then... And now, when we know the only board affected by
> this change is at91rm9200dk, could we move forward and apply this patch?
> Cleanup of cmc_pu2's config file will follow in separate patch.

I will need this patch to be applied. I will add support for a board
(actually 2)
that will use this file.

Regards.

-- 
http://arhuaco.org
http://emQbit.com