R/W Filesystem?

Hi friends!

I've make a new partition as you can see by this start sequence:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

creating 5 mtd partitions on "altera ndk flash (amd)":

0x00200000-0x00700000 : "romfs/jffs2"

0x00000000-0x00200000 : "loader/kernel"

0x00800000-0x00c00000 : "user configuration"

0x00c00000-0x01000000 : "safe configuration"

0x00700000-0x00800000 : "part1"

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

and by the following command output:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~# cat proc/partitions

major minor # blocks name

31 0 5120 mtdblock0

31 1 2048 mtdblock1

31 2 4096 mtdblock2

31 3 4096 mtdblock3

31 4 1024 mtdblock4#

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

For this partition I've generated a block device directly by "@mtdblock4,b,31,4" in the filesystem which I've uploaded.

When I try to erase the content of partition part1 alias mtdblock4 by the following program the board reboot.

#include <stdio.h># include "system.h"# include "sys/alt_flash.h"
 
int main(int argc, char* argv)
{
  alt_flash_fd* flash;
  int i;
 
  printf("alt_flash_open_dev(&#39;../dev/mtdblock4&#39;)");
  flash=alt_flash_open_dev("../dev/mtdblock4");
  /*
  for (i=0x700000;i<0x800000;i=i+0x10000)
  {
   printf("Erase %08x\n",i);    
   alt_erase_flash_block(flash,i,0x10000);
  }
  */
  return 0;
}

Why does the board reboot by this program?

Bye, Lothar.