[U-Boot-Users] "1.at45":(1 of 4) [PATCH] [ARM] Merge to two files into a common file and split.
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
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
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
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
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
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-bounces@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
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
u-boot-users-bounces@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
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
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.
participants (6)
-
Andreas Schweigstill -
Ladislav Michl -
Martin Krause -
Nelson Castillo -
Ulf Samuelsson -
Wolfgang Denk