NIOS ii Generic tristate controller - FLASH - DE4

Hello All,

I'm using a Terasic DE4 Stratix IV development board, i'm facing a problem using the GENERIC TRISTATE CONTROLLE to control a CFI Flash memory (Axcell 28F512P30-65nm). I've used the template created from the preset library named "Flash memory Interface (CFI)"

and adjusted all timing to my memory.

The Module parameters are:

embeddedsw.configuration.hwClassnameDriverSupportList : altera_avalon_cfi_flash

embeddedsw.configuration.hwClassnameDriverSupportDefault : altera_avalon_cfi_flash

...

( I don't know what this means)

embeddedsw.memoryInfo.DAT_SYM_INSTALL_DIR: SIM_DIR

embeddedsw.memoryInfo.FLASH_INSTALL_DIR : APP_DIR

and

embeddedsw.configuration.isFlash = 1

embeddedsw.configuration.isMemoryDevice = 1

embeddedsw.configuration.isNonVolatileStorage = 1

The system.h generate from the bsp give me this:

# define __ALTERA_AVALON_JTAG_UART

# define __ALTERA_AVALON_ONCHIP_MEMORY2

# define __ALTERA_AVALON_PIO

# define __ALTERA_AVALON_SYSID_QSYS

# define __ALTERA_AVALON_TIMER

#define __altera_generic_tristate_controller

# define __ALTERA_NIOS2_QSYS

# define __ALTPLL

/*

* FLASH configuration

*

*/

# define ALT_MODULE_CLASS_FLASH altera_generic_tristate_controller

# define FLASH_BASE 0x4000000

# define FLASH_HOLD_VALUE 50

# define FLASH_IRQ -1

# define FLASH_IRQ_INTERRUPT_CONTROLLER_ID -1

# define FLASH_NAME "/dev/FLASH"

# define FLASH_SETUP_VALUE 110

# define FLASH_SIZE 16777216u

# define FLASH_SPAN 16777216

# define FLASH_TIMING_UNITS "ns"

#define flash_type "altera_generic_tristate_controller"

# define FLASH_WAIT_VALUE 110

The first problem I see here is that the #define __altera_avalon_cfi_flash is not defined on my system.h. I have a old reference project that come with the DE4 board but uses old quartus version and this is defined.

Know when I try to open the Flash device doing:

flash_handle = alt_flash_open_dev(FLASH_NAME);

if (flash_handle)

{

alt_write_flash(flash_handle,

0,

flash_content,

10);

alt_flash_close_dev(flash_handle);

error = 0;

}

the flash_handle is null. I've the singnal tap debugging the FLASH I/O and I can see the I/Os moving when i direct access the flash by writing to the flash_base address. But I need to access it using

the CFI interface, otherwise I can't write on the device.

When I open the bsp_editor and go to drivers, the flash driver is set to altera_avalon_cfi_flash_driver, but why the system.h is not set to this ?

Resume: Shouldn't i see this:

# define __ALTERA_AVALON_CFI_FLASH

# define FLASH_TYPE "altera_avalon_cfi_flash_driver"

instead of

# define __ALTERA_GENERIC_TRISTATE_CONTROLLER

# define FLASH_TYPE "altera_generic_tristate_controller"

Please help me.

Thank you,

Rafael Corsi - Brasil

corsiferrao gmail.com