Re: [U-Boot-Users] dataflash problem

Hi,

thank you for your answer!

in the last few hours I've managed to track down that the error is not in the address range checking, but in at45.c : AT91F_DataFlashRead function. Within that, the AT91F_DataFlashWaitReady function is timeouting resulting that cmd_mem.c:do_mem_cmd continues execution at line 167, where it attemts to read non-existing memory..

I dont really know why is this timeout occuring, since I've written some codes which run natively (without Linux) on the board, and I can access the DataFlash without problems.

regards, Zoli

Absence of NAND flash uncovers an issue with flash address ranges checking. The problem can be bypassed with either of two methods:

First: hack address ranges checking in common/flash.c:

--- u-boot-1.1.3/common/flash.c 2005-08-14 03:53:35.000000000 +0400 +++ u-boot-1.1.3-new/common/flash.c 2005-09-15 01:15:58.000000000 +0400 @@ -105,6 +105,8 @@ int i;

for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {

• if (info->size == 0)
  

• 	continue;
  

  if (info->flash_id != FLASH_UNKNOWN && addr >= info->start[0] && /* WARNING - The '- 1' is needed if the flash

Second: disable NAND flash by setting CFG_MAX_FLASH_BANKS to 0 in board config.

I'm not sure it is right solution, but it at least looks as working for me :)