* the GNU General Public License.
*
* Copyright 2007 Develer S.r.l. (http://www.develer.com/)
- *
* -->
*
- * \brief Function library for serial Flash memory.
+ * \brief Function library for serial Flash memory.
*
* Module provide a kfile interface, that ensure an abstraction
* from comunication channel and give a standard interface.
* Typicaly this kind of memory use an SPI bus, but you should
* use another comunication channel you have defined.
*
- * \version $Id$
* \author Daniele Basile <asterix@develer.com>
*/
* We use a spi bus, thus include hardware specific definition.
* If you use another channel you must redefine this macros.
*/
-#include "hw_spi.h"
-
-#include <appconfig.h>
+#include "hw/hw_spi.h"
#include <cfg/macros.h>
#include <cfg/debug.h>
#include <drv/timer.h>
#include <drv/flash25.h>
-#if CONFIG_KERNEL
-#include <kern/proc.h>
-#endif
+#include <io/kfile.h>
+#include <cpu/power.h> /* cpu_relax() */
-/**
- * Global definition of channel handler (usually SPI).
- */
-static KFile *channel;
+#warning FIXME:This file was changed, but is untested!
/**
* Wait until flash memory is ready.
*/
-static void flash25_waitReady(void)
+static void flash25_waitReady(Flash25 *fd)
{
uint8_t stat;
{
CS_ENABLE();
- kfile_putc(FLASH25_RDSR, channel);
- stat = kfile_getc(channel);
+ kfile_putc(FLASH25_RDSR, fd->channel);
+ stat = kfile_getc(fd->channel);
CS_DISABLE();
if (!(stat & RDY_BIT))
break;
- #if CONFIG_KERNEL
- else
- proc_switch();
- #endif
+
+ cpu_relax();
}
}
/**
* Send a single command to serial flash memory.
*/
-static void flash25_sendCmd(Flash25Opcode cmd)
+static void flash25_sendCmd(Flash25 *fd, Flash25Opcode cmd)
{
CS_ENABLE();
- kfile_putc(cmd, channel);
+ kfile_putc(cmd, fd->channel);
CS_DISABLE();
}
* try to read manufacturer id of serial memory,
* then check if is equal to selected type.
*/
-static bool flash25_pin_init(void)
+static bool flash25_pin_init(Flash25 *fd)
{
uint8_t device_id;
uint8_t manufacturer;
* comunication channel
* TODO:controllare se ha senso
*/
- kfile_putc(FLASH25_RDID, channel);
+ kfile_putc(FLASH25_RDID, fd->channel);
- manufacturer = kfile_getc(channel);
- device_id = kfile_getc(channel);
+ manufacturer = kfile_getc(fd->channel);
+ device_id = kfile_getc(fd->channel);
CS_DISABLE();
* the size and seek_pos in kfile stucture.
* Return a kfile pointer, after assert check.
*/
-static KFile * flash25_reopen(struct KFile *fd)
+static KFile * flash25_reopen(struct KFile *_fd)
{
- KFILE_ASSERT_GENERIC(fd);
+ Flash25 *fd = FLASH25_CAST(_fd);
- fd->seek_pos = 0;
- fd->size = FLASH25_MEM_SIZE;
+ fd->fd.seek_pos = 0;
+ fd->fd.size = FLASH25_MEM_SIZE;
kprintf("flash25 file opened\n");
- return fd;
+ return &fd->fd;
}
/**
*
* \return the number of bytes read.
*/
-static size_t flash25_read(struct KFile *fd, void *buf, size_t size)
+static size_t flash25_read(struct KFile *_fd, void *buf, size_t size)
{
uint8_t *data = (uint8_t *)buf;
- KFILE_ASSERT_GENERIC(fd);
+ Flash25 *fd = FLASH25_CAST(_fd);
- ASSERT(fd->seek_pos + size <= fd->size);
- size = MIN((uint32_t)size, fd->size - fd->seek_pos);
+ ASSERT(fd->fd.seek_pos + (kfile_off_t)size <= fd->fd.size);
+ size = MIN((kfile_off_t)size, fd->fd.size - fd->fd.seek_pos);
//kprintf("Reading at addr[%lu], size[%d]\n", fd->seek_pos, size);
CS_ENABLE();
- kfile_putc(FLASH25_READ, channel);
+ kfile_putc(FLASH25_READ, fd->channel);
/*
* Address that we want to read.
*/
- kfile_putc((fd->seek_pos >> 16) & 0xFF, channel);
- kfile_putc((fd->seek_pos >> 8) & 0xFF, channel);
- kfile_putc(fd->seek_pos & 0xFF, channel);
+ kfile_putc((fd->fd.seek_pos >> 16) & 0xFF, fd->channel);
+ kfile_putc((fd->fd.seek_pos >> 8) & 0xFF, fd->channel);
+ kfile_putc(fd->fd.seek_pos & 0xFF, fd->channel);
- kfile_read(channel, data, size);
+ kfile_read(fd->channel, data, size);
CS_DISABLE();
- fd->seek_pos += size;
+ fd->fd.seek_pos += size;
return size;
}
*
* \return the number of bytes write.
*/
-static size_t flash25_write(struct KFile *fd, const void *_buf, size_t size)
+static size_t flash25_write(struct KFile *_fd, const void *_buf, size_t size)
{
flash25Offset_t offset;
flash25Size_t total_write = 0;
flash25Size_t wr_len;
const uint8_t *data = (const uint8_t *) _buf;
- KFILE_ASSERT_GENERIC(fd);
- ASSERT(fd->seek_pos + size <= fd->size);
+ Flash25 *fd = FLASH25_CAST(_fd);
+
+ ASSERT(fd->fd.seek_pos + (kfile_off_t)size <= fd->fd.size);
- size = MIN((flash25Size_t)size, fd->size - fd->seek_pos);
+ size = MIN((kfile_off_t)size, fd->fd.size - fd->fd.seek_pos);
while (size)
{
- offset = fd->seek_pos % (flash25Size_t)FLASH25_PAGE_SIZE;
+ offset = fd->fd.seek_pos % (flash25Size_t)FLASH25_PAGE_SIZE;
wr_len = MIN((flash25Size_t)size, FLASH25_PAGE_SIZE - (flash25Size_t)offset);
- kprintf("[seek_pos-<%lu>, offset-<%d>]\n", fd->seek_pos, offset);
+ kprintf("[seek_pos-<%lu>, offset-<%d>]\n", fd->fd.seek_pos, offset);
/*
* We check serial flash memory state, and wait until ready-flag
* is high.
*/
- flash25_waitReady();
+ flash25_waitReady(fd);
/*
* Start write cycle.
* \note: the same byte cannot be reprogrammed without
* erasing the whole sector first.
*/
- flash25_sendCmd(FLASH25_WREN);
+ flash25_sendCmd(fd, FLASH25_WREN);
CS_ENABLE();
- kfile_putc(FLASH25_PROGRAM, channel);
+ kfile_putc(FLASH25_PROGRAM, fd->channel);
/*
* Address that we want to write.
*/
- kfile_putc((fd->seek_pos >> 16) & 0xFF, channel);
- kfile_putc((fd->seek_pos >> 8) & 0xFF, channel);
- kfile_putc(fd->seek_pos & 0xFF, channel);
+ kfile_putc((fd->fd.seek_pos >> 16) & 0xFF, fd->channel);
+ kfile_putc((fd->fd.seek_pos >> 8) & 0xFF, fd->channel);
+ kfile_putc(fd->fd.seek_pos & 0xFF, fd->channel);
- kfile_write(channel, data, wr_len);
+ kfile_write(fd->channel, data, wr_len);
CS_DISABLE();
data += wr_len;
- fd->seek_pos += wr_len;
+ fd->fd.seek_pos += wr_len;
size -= wr_len;
total_write += wr_len;
}
- kprintf("written %u bytes\n", total_write);
+ kprintf("written %lu bytes\n", total_write);
return total_write;
}
* \note A sector size is FLASH25_SECTOR_SIZE.
* This operation could take a while.
*/
-void flash25_sectorErase(Flash25Sector sector)
+void flash25_sectorErase(Flash25 *fd, Flash25Sector sector)
{
/*
* determinate if any address within the sector
* is selected.
*/
- kfile_putc(FLASH25_WREN, channel);
- kfile_putc(FLASH25_SECTORE_ERASE, channel);
+ kfile_putc(FLASH25_WREN, fd->channel);
+ kfile_putc(FLASH25_SECTORE_ERASE,fd-> channel);
/*
* Address inside the sector that we want to
* erase.
*/
- kfile_putc(sector, channel);
+ kfile_putc(sector, fd->channel);
CS_DISABLE();
* We check serial flash memory state, and wait until ready-flag
* is hight.
*/
- flash25_waitReady();
-
- DB(kprintf("Erased sector [%d] in %d ms\n", sector, ticks_to_ms(timer_clock() - start_time)));
+ flash25_waitReady(fd);
+ DB(kprintf("Erased sector [%ld] in %ld ms\n", (unsigned long)sector, (unsigned long)ticks_to_ms(timer_clock() - start_time)));
}
/**
*
* \note This operation could take a while.
*/
-void flash25_chipErase(void)
+void flash25_chipErase(Flash25 *fd)
{
/*
* Erase all chip could take a while,
* enable write with a WREN opcode command, before
* the CHIP_ERASE opcode.
*/
- flash25_sendCmd(FLASH25_WREN);
- flash25_sendCmd(FLASH25_CHIP_ERASE);
+ flash25_sendCmd(fd, FLASH25_WREN);
+ flash25_sendCmd(fd, FLASH25_CHIP_ERASE);
/*
* We check serial flash memory state, and wait until ready-flag
* is high.
*/
- flash25_waitReady();
+ flash25_waitReady(fd);
- DB(kprintf("Erased all memory in %d ms\n", ticks_to_ms(timer_clock() - start_time)));
+ DB(kprintf("Erased all memory in %ld ms\n", ticks_to_ms(timer_clock() - start_time)));
}
/**
* Init data flash memory interface.
*/
-void flash25_init(struct KFile *fd, struct KFile *_channel)
+void flash25_init(Flash25 *fd, KFile *ch)
{
+
+ ASSERT(fd);
+ ASSERT(ch);
+
//Set kfile struct type as a generic kfile structure.
- DB(fd->_type = KFT_GENERIC);
+ DB(fd->fd._type = KFT_FLASH25);
// Set up data flash programming functions.
- fd->reopen = flash25_reopen;
- fd->close = flash25_close;
- fd->read = flash25_read;
- fd->write = flash25_write;
- fd->seek = kfile_genericSeek;
+ fd->fd.reopen = flash25_reopen;
+ fd->fd.close = flash25_close;
+ fd->fd.read = flash25_read;
+ fd->fd.write = flash25_write;
+ fd->fd.seek = kfile_genericSeek;
/*
* Init a local channel structure and flash kfile interface.
*/
- channel = _channel;
- flash25_reopen(fd);
+ fd->channel = ch;
+ flash25_reopen(&fd->fd);
/*
* Init data flash memory and micro pin.
*/
- if (!flash25_pin_init())
+ if (!flash25_pin_init(fd))
ASSERT(0);
}
-#if CONFIG_TEST
-/**
- * Test function for flash25.
- *
- * \note: This implentation use a SPI channel.
- */
-bool flash25_test(KFile *channel)
-{
- KFile fd;
- uint8_t test_buf[256];
-
- /*
- * Init a spi kfile interface and
- * flash driver.
- */
- flash25_init(&fd, channel);
-
- kprintf("Init serial flash\n");
-
- flash25_chipErase();
-
- flash25_sectorErase(FLASH25_SECT1);
- flash25_sectorErase(FLASH25_SECT2);
- flash25_sectorErase(FLASH25_SECT3);
- flash25_sectorErase(FLASH25_SECT4);
-
- /*
- * Launche a kfile test interface.
- */
- kprintf("Kfile test start..\n");
- if (!kfile_test(&fd, test_buf, NULL, sizeof(test_buf)))
- return false;
-
- return true;
-}
-#endif /* CONFIG_TEST */
projects / bertos.git / blobdiff