Abb first skel of programmming AVR flash memory.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@791 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/mware/prog.h b/mware/prog.h
new file mode 100755 (executable)
index 0000000..f197975
--- /dev/null
+++ b/mware/prog.h
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+/**
+ * \file
+ * <!--
+ * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Generic program read/write routines interface
+ * 
+ * This module implements an interface function for programming
+ * a CPU flash memory. To guarantee correct memory writing, we
+ * use a rotating hash algorithm.
+ * 
+ * 
+ * \version $Id$
+ * \author Francesco Sacchi <batt@develer.com>
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#ifndef PROG_H
+#define PROG_H
+
+#include <cfg/compiler.h>
+#include <mware/kfile.h>
+#include <algos/rotating_hash.h>
+
+/**
+ * Generic interface of progress status function.
+ * \param value is current progress value
+ * \param max is max progress value
+ * \return True if programming should continue
+ * \return False to stop programming
+ */
+typedef bool (*progress_func_t) (int value, int max);
+
+/**
+ * Generic interface for programming a CPU flash memory.
+ * \param *file is the Kfile pointer to write
+ * \param progress is progress fuction pointer, can be NULL if not used
+ * \return rotating hash of file written
+ */
+rotating_t prog_write(struct _KFile *file, progress_func_t progress);
+
+#endif /* PROG_H */

diff --git a/mware/prog_avr.c b/mware/prog_avr.c
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index 0000000..05c1ab1
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+++ b/mware/prog_avr.c
@@ -0,0 +1,118 @@
+/**
+ * \file
+ * <!--
+ * Copyright 2004 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Self programming routines
+ *
+ * \version $Id$
+ * \author Francesco Sacchi <batt@develer.com>
+ */
+
+#include "prog.h"
+#include <drv/wdt.h>
+#include <cfg/macros.h> // MIN()
+#include <cfg/compiler.h>
+#include <flash.h>
+#include <defines.h>
+#include <avr/io.h>
+#include <algos/rotating_hash.h>
+
+/**
+ * Erase Flash.
+ */
+static void prog_erase_flash(void)
+{
+       uint32_t flash_addr;
+       /* Erase the flash ROM */
+       #ifdef LARGE_MEMORY
+               /*
+               * SPM uses Z pointer but the pointer is only 16 bit and
+               * can only address up to 64Kbytes FLASH. Higher locations
+               * require the use of RAMPZ
+               */
+               RAMPZ = 0x00;
+
+               for (flash_addr = 0; (flash_addr < (uint16_t)(APP_END & 0xFFFF)) | (RAMPZ == 0x00); flash_addr += PAGESIZE)
+               {
+                       wdt_reset();
+
+                       write_page(flash_addr, BV(PGERS) + BV(SPMEN));             /* Page erase */
+                       write_page(flash_addr, BV(REENABLE_RWW_BIT) + BV(SPMEN));  /* Re-enable the RWW section */
+
+                       if(flashgg_addr >= (0xFFFF - PAGESIZE))  /* Last section on lower 64k segment is erased */
+                               RAMPZ = BV(RAMPZ0);          /* RAMPZ has to be incremented into upper 64k segment */
+               }
+               RAMPZ = 0x00;
+       #else /* LARGE_MEMORY */
+               for (flash_addr = 0; flash_addr < APP_END; flash_addr += PAGESIZE)  /* Application section = 60 pages */
+               {
+                       wdt_reset();
+
+                       /* Page erase */
+                       write_page(flash_addr, BV(PGERS) + BV(SPMEN));
+                       /* Re-enable RWW section */
+                       write_page(flash_addr, BV(REENABLE_RWW_BIT) + BV(SPMEN));
+               }
+       #endif /* LARGE_MEMORY */
+}
+
+
+/**
+ * Write a page in program memory.
+ */
+static void prog_pagewrite(uint16_t addr)
+{
+       write_page(addr, BV(PGWRT) + BV(SPMEN));
+       /* Re-enable the RWW section */
+       write_page(addr, BV(REENABLE_RWW_BIT) + BV(SPMEN));
+}
+
+
+/**
+ * Write program memory.
+ */
+rotating_t prog_write(struct _KFile *file, progress_func_t progress)
+{
+       size_t size;
+       rotating_t rot = 0;
+       uint32_t flash_addr = 0;
+       uint16_t page_addr;
+       uint8_t buf[PAGESIZE];
+       
+       /* We erase fash memory before to write inside */
+       prog_erase_flash();
+
+       for (;;)
+       {
+               wdt_reset();
+
+               /* Read data from file */
+               size = file->read(file, buf, PAGESIZE);
+
+               /* If we reached end of file exit */
+               if (!size)
+                       break;
+       
+               /* Update checksum */
+               rotating_update(buf, size, &rot);
+       
+               /* Fill the temporary buffer of the AVR */
+               for (page_addr = 0; page_addr < size; page_addr += 2)
+                       fill_temp_buffer(buf[page_addr + 1] | (uint16_t)buf[page_addr] << 8, page_addr);
+               
+               /* Page write */
+               prog_pagewrite(flash_addr);
+       
+               /* Update progess (if present) */
+               if (progress)
+                       if (!progress(file->SeekPos, file->Size))
+                               break;
+               
+               flash_addr += size;
+       }
+
+       return rot
+}