From dcbfd2e5649f97aa04fbbc6ea2b008aa4486e225 Mon Sep 17 00:00:00 2001 From: Peter Pearse Date: Tue, 14 Aug 2007 10:14:05 +0100 Subject: Add the files. --- drivers/at45.c | 550 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 550 insertions(+) create mode 100644 drivers/at45.c (limited to 'drivers/at45.c') diff --git a/drivers/at45.c b/drivers/at45.c new file mode 100644 index 0000000..35c9ecc --- /dev/null +++ b/drivers/at45.c @@ -0,0 +1,550 @@ +/* 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 +#include + +#ifdef CONFIG_HAS_DATAFLASH +#include + + +#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 */ +/* : = dataflash address */ +/* : <*dataBuffer> = data buffer pointer */ +/* : = 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 thru buffer 1 or buffer 2 */ +/* Input Parameters : DataFlash Service */ +/* : <*src> = Source buffer */ +/* : = dataflash destination address */ +/* : = 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 */ +/* : = command to write buffer1 or 2 */ +/* : <*dataBuffer> = data buffer to write */ +/* : = address in the internal buffer */ +/* : = 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 */ +/* : = command to send to buffer1 or buffer2 */ +/* : = 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 number */ +/* : = adr to begin the fading */ +/* : = 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 */ +/* : = dataflash adress */ +/* : = 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; +} + + -- cgit v1.1 From 0c42f36f15074bd9808a7dbd7ef611fad9bf537c Mon Sep 17 00:00:00 2001 From: Peter Pearse Date: Tue, 14 Aug 2007 10:46:32 +0100 Subject: Replace lost end of at45.c. --- drivers/at45.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) mode change 100644 => 100755 drivers/at45.c (limited to 'drivers/at45.c') diff --git a/drivers/at45.c b/drivers/at45.c old mode 100644 new mode 100755 index 35c9ecc..4c12ca7 --- a/drivers/at45.c +++ b/drivers/at45.c @@ -547,4 +547,18 @@ int AT91F_DataFlashRead( 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 + -- cgit v1.1 From e54b970173769307a116bd34028b6d0c2eea2a4e Mon Sep 17 00:00:00 2001 From: Peter Pearse Date: Tue, 14 Aug 2007 15:40:00 +0100 Subject: Supply spi interface in at45.c --- drivers/at45.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/at45.c') diff --git a/drivers/at45.c b/drivers/at45.c index 4c12ca7..7d35695 100755 --- a/drivers/at45.c +++ b/drivers/at45.c @@ -24,6 +24,11 @@ #ifdef CONFIG_HAS_DATAFLASH #include +/* + * spi.c API + */ +extern unsigned int AT91F_SpiWrite (AT91PS_DataflashDesc pDesc); +extern void AT91F_SpiEnable(int cs); #define AT91C_TIMEOUT_WRDY 200000 -- cgit v1.1 From f01dbb5424a81453c81190dd30e945891466f621 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Tue, 14 Aug 2007 18:42:36 +0200 Subject: Coding style cleanup. Update CHANGELOG. Signed-off-by: Wolfgang Denk --- drivers/at45.c | 133 ++++++++++++++++++++++++++++----------------------------- 1 file changed, 65 insertions(+), 68 deletions(-) (limited to 'drivers/at45.c') diff --git a/drivers/at45.c b/drivers/at45.c index 7d35695..507ff36 100755 --- a/drivers/at45.c +++ b/drivers/at45.c @@ -36,7 +36,7 @@ extern void AT91F_SpiEnable(int cs); /*----------------------------------------------------------------------*/ /* \fn AT91F_DataFlashSendCommand */ /* \brief Generic function to send a command to the dataflash */ -/*----------------------------------------------------------------------*/ +/*----------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_DataFlashSendCommand( AT91PS_DataFlash pDataFlash, unsigned char OpCode, @@ -49,27 +49,27 @@ AT91S_DataFlashStatus AT91F_DataFlashSendCommand( return DATAFLASH_BUSY; /* process the address to obtain page address and byte address */ - adr = ((DataflashAddress / (pDataFlash->pDevice->pages_size)) << - pDataFlash->pDevice->page_offset) + (DataflashAddress % + 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] = + pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x0F000000) >> 24); - pDataFlash->pDataFlashDesc->command[2] = + pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x00FF0000) >> 16); - pDataFlash->pDataFlashDesc->command[3] = + pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((adr & 0x0000FF00) >> 8); - pDataFlash->pDataFlashDesc->command[4] = + pDataFlash->pDataFlashDesc->command[4] = (unsigned char)(adr & 0x000000FF); } else { - pDataFlash->pDataFlashDesc->command[1] = + pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x00FF0000) >> 16); - pDataFlash->pDataFlashDesc->command[2] = + pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x0000FF00) >> 8); - pDataFlash->pDataFlashDesc->command[3] = + pDataFlash->pDataFlashDesc->command[3] = (unsigned char)(adr & 0x000000FF); pDataFlash->pDataFlashDesc->command[4] = 0; } @@ -78,10 +78,10 @@ AT91S_DataFlashStatus AT91F_DataFlashSendCommand( pDataFlash->pDataFlashDesc->command[7] = 0; /* Initialize the SpiData structure for the spi write fuction */ - pDataFlash->pDataFlashDesc->tx_cmd_pt = + pDataFlash->pDataFlashDesc->tx_cmd_pt = pDataFlash->pDataFlashDesc->command; pDataFlash->pDataFlashDesc->tx_cmd_size = CmdSize; - pDataFlash->pDataFlashDesc->rx_cmd_pt = + pDataFlash->pDataFlashDesc->rx_cmd_pt = pDataFlash->pDataFlashDesc->command; pDataFlash->pDataFlashDesc->rx_cmd_size = CmdSize; @@ -92,8 +92,8 @@ AT91S_DataFlashStatus AT91F_DataFlashSendCommand( /*----------------------------------------------------------------------*/ /* \fn AT91F_DataFlashGetStatus */ /* \brief Read the status register of the dataflash */ -/*----------------------------------------------------------------------*/ -AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc) +/*----------------------------------------------------------------------*/ +AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc) { AT91S_DataFlashStatus status; @@ -123,16 +123,16 @@ AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc) /*----------------------------------------------------------------------*/ /* \fn AT91F_DataFlashWaitReady */ /* \brief wait for dataflash ready (bit7 of the status register == 1) */ -/*----------------------------------------------------------------------*/ -AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc -pDataFlashDesc, unsigned int timeout) +/*----------------------------------------------------------------------*/ +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) && + } while( ((pDataFlashDesc->DataFlash_state & 0x80) != 0x80) && (timeout > 0) ); if((pDataFlashDesc->DataFlash_state & 0x80) != 0x80) @@ -150,7 +150,7 @@ pDataFlashDesc, unsigned int timeout) /* : <*dataBuffer> = data buffer pointer */ /* : = data buffer size */ /* Return value : State of the dataflash */ -/*--------------------------------------------------------------------------*/ +/*--------------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead ( AT91PS_DataFlash pDataFlash, int src, @@ -159,8 +159,8 @@ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead ( { AT91S_DataFlashStatus status; /* Test the size to read in the device */ - if ( (src + sizeToRead) > - (pDataFlash->pDevice->pages_size * + if ( (src + sizeToRead) > + (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number))) return DATAFLASH_MEMORY_OVERFLOW; @@ -169,7 +169,7 @@ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead ( pDataFlash->pDataFlashDesc->tx_data_pt = dataBuffer; pDataFlash->pDataFlashDesc->tx_data_size = sizeToRead; - status = AT91F_DataFlashSendCommand + status = AT91F_DataFlashSendCommand (pDataFlash, DB_CONTINUOUS_ARRAY_READ, 8, src); /* Send the command to the dataflash */ return(status); @@ -184,7 +184,7 @@ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead ( /* : = dataflash destination address */ /* : = data buffer size */ /* Return value : State of the dataflash */ -/*---------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf( AT91PS_DataFlash pDataFlash, unsigned char *src, @@ -201,7 +201,7 @@ AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf( /* Send the command to the dataflash */ if (pDataFlash->pDevice->pages_number >= 16384) cmdsize = 5; - return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_PGM_BUF1, + return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_PGM_BUF1, cmdsize, dest)); } @@ -212,7 +212,7 @@ cmdsize, dest)); } /* : Page concerned */ /* : */ /* Return value : State of the dataflash */ -/*---------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert( AT91PS_DataFlash pDataFlash, unsigned char BufferCommand, @@ -220,7 +220,7 @@ AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert( { int cmdsize; /* Test if the buffer command is legal */ - if ((BufferCommand != DB_PAGE_2_BUF1_TRF) + if ((BufferCommand != DB_PAGE_2_BUF1_TRF) && (BufferCommand != DB_PAGE_2_BUF2_TRF)) return DATAFLASH_BAD_COMMAND; @@ -229,7 +229,7 @@ AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert( cmdsize = 4; if (pDataFlash->pDevice->pages_number >= 16384) cmdsize = 5; - return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize, + return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize, page*pDataFlash->pDevice->pages_size)); } @@ -253,7 +253,7 @@ AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer ( { int cmdsize; /* Test if the buffer command is legal */ - if ((BufferCommand != DB_BUF1_WRITE) + if ((BufferCommand != DB_BUF1_WRITE) && (BufferCommand != DB_BUF2_WRITE)) return DATAFLASH_BAD_COMMAND; @@ -269,26 +269,26 @@ AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer ( 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->pDataFlashDesc->command[3] = + (unsigned char)(((unsigned int)(bufferAddress & pDataFlash->pDevice->byte_mask)) >> 8); - pDataFlash->pDataFlashDesc->command[4] = + pDataFlash->pDataFlashDesc->command[4] = (unsigned char)((unsigned int)bufferAddress & 0x00FF); cmdsize = 5; } else { - pDataFlash->pDataFlashDesc->command[2] = - (unsigned char)(((unsigned int)(bufferAddress & + pDataFlash->pDataFlashDesc->command[2] = + (unsigned char)(((unsigned int)(bufferAddress & pDataFlash->pDevice->byte_mask)) >> 8); - pDataFlash->pDataFlashDesc->command[3] = + pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((unsigned int)bufferAddress & 0x00FF); pDataFlash->pDataFlashDesc->command[4] = 0; cmdsize = 4; } - pDataFlash->pDataFlashDesc->tx_cmd_pt = + pDataFlash->pDataFlashDesc->tx_cmd_pt = pDataFlash->pDataFlashDesc->command; pDataFlash->pDataFlashDesc->tx_cmd_size = cmdsize; - pDataFlash->pDataFlashDesc->rx_cmd_pt = + pDataFlash->pDataFlashDesc->rx_cmd_pt = pDataFlash->pDataFlashDesc->command; pDataFlash->pDataFlashDesc->rx_cmd_size = cmdsize; @@ -320,7 +320,7 @@ AT91S_DataFlashStatus AT91F_PageErase( cmdsize = 4; if (pDataFlash->pDevice->pages_number >= 16384) cmdsize = 5; - return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_ERASE, cmdsize, + return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_ERASE, cmdsize, page*pDataFlash->pDevice->pages_size)); } @@ -332,7 +332,7 @@ page*pDataFlash->pDevice->pages_size)); /* : Page concerned */ /* : */ /* Return value : State of the dataflash */ -/*---------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_BlockErase( AT91PS_DataFlash pDataFlash, unsigned int block) @@ -344,7 +344,7 @@ AT91S_DataFlashStatus AT91F_BlockErase( cmdsize = 4; if (pDataFlash->pDevice->pages_number >= 16384) cmdsize = 5; - return(AT91F_DataFlashSendCommand (pDataFlash, DB_BLOCK_ERASE,cmdsize, + return(AT91F_DataFlashSendCommand (pDataFlash, DB_BLOCK_ERASE,cmdsize, block*8*pDataFlash->pDevice->pages_size)); } @@ -355,7 +355,7 @@ block*8*pDataFlash->pDevice->pages_size)); /* : = command to send to buffer1 or buffer2 */ /* : = main memory address */ /* Return value : State of the dataflash */ -/*---------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_WriteBufferToMain ( AT91PS_DataFlash pDataFlash, unsigned char BufferCommand, @@ -386,7 +386,7 @@ AT91S_DataFlashStatus AT91F_WriteBufferToMain ( /* Input Parameters : = page number */ /* : = adr to begin the fading */ /* : = Number of bytes to erase */ -/*---------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_PartialPageWrite ( AT91PS_DataFlash pDataFlash, unsigned char *src, @@ -400,27 +400,27 @@ AT91S_DataFlashStatus AT91F_PartialPageWrite ( AdrInPage = dest % (pDataFlash->pDevice->pages_size); /* Read the contents of the page in the Sram Buffer */ - AT91F_MainMemoryToBufferTransfert(pDataFlash, + AT91F_MainMemoryToBufferTransfert(pDataFlash, DB_PAGE_2_BUF1_TRF, page); - AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY); /*Update the SRAM buffer */ - AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src, + AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src, AdrInPage, size); - AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + 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, + 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, + return(AT91F_WriteBufferToMain(pDataFlash, DB_BUF1_PAGE_ERASE_PGM, (page*pDataFlash->pDevice->pages_size))); } @@ -430,7 +430,7 @@ AT91S_DataFlashStatus AT91F_PartialPageWrite ( /* Input Parameters : <*src> = Source buffer */ /* : = dataflash adress */ /* : = data buffer size */ -/*---------------------------------------------------------------------------*/ +/*---------------------------------------------------------------------------*/ AT91S_DataFlashStatus AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash, unsigned char *src, @@ -443,15 +443,15 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite( AT91F_SpiEnable(pDataFlash->pDevice->cs); - if ( (dest + size) > (pDataFlash->pDevice->pages_size * + 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 ) + if ((dest % ((unsigned int)(pDataFlash->pDevice->pages_size))) != 0 ) { - length = pDataFlash->pDevice->pages_size - - (dest % + length = pDataFlash->pDevice->pages_size - + (dest % ((unsigned int) (pDataFlash->pDevice->pages_size))); @@ -461,7 +461,7 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite( if(!AT91F_PartialPageWrite(pDataFlash,src, dest, length)) return DATAFLASH_ERROR; - AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY); /* Update size, source and destination pointers */ @@ -474,24 +474,24 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite( /* program dataflash page */ page = (unsigned int)dest / (pDataFlash->pDevice->pages_size); - status = AT91F_DataFlashWriteBuffer(pDataFlash, - DB_BUF1_WRITE, src, 0, + status = AT91F_DataFlashWriteBuffer(pDataFlash, + DB_BUF1_WRITE, src, 0, pDataFlash->pDevice->pages_size); - AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY); status = AT91F_PageErase(pDataFlash, page); - AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY); if (!status) return DATAFLASH_ERROR; - status = AT91F_WriteBufferToMain (pDataFlash, + status = AT91F_WriteBufferToMain (pDataFlash, DB_BUF1_PAGE_PGM, dest); if(!status) return DATAFLASH_ERROR; - AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY); /* Update size, source and destination pointers */ @@ -506,7 +506,7 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite( if(!AT91F_PartialPageWrite(pDataFlash, src, dest, size) ) return DATAFLASH_ERROR; - AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY); } return DATAFLASH_OK; @@ -529,18 +529,18 @@ int AT91F_DataFlashRead( AT91F_SpiEnable(pDataFlash->pDevice->cs); - if(AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + if(AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY) != DATAFLASH_OK) return -1; while (size) { SizeToRead = (size < 0x8000)? size:0x8000; - if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, + if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_TIMEOUT_WRDY) != DATAFLASH_OK) return -1; - if (AT91F_DataFlashContinuousRead (pDataFlash, addr, + if (AT91F_DataFlashContinuousRead (pDataFlash, addr, (uchar *) buffer, SizeToRead) != DATAFLASH_OK) return -1; @@ -557,13 +557,10 @@ int AT91F_DataFlashRead( /* 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); + return((pDesc->command[1] == 0xFF)? 0: pDesc->command[1] & 0x3C); } - #endif - - -- cgit v1.1