Re: [ECOS] support for AM29LV256M flash device

[Gary Thomas <gary at mlbassoc dot com>]

On Fri, 2005-02-25 at 15:25 +0100, Manfred Gruber wrote:
> Hi !
> 
> ----------- > I added this to flash_amd_am29xxxxx.cdl 
>    
>    cdl_option CYGHWR_DEVS_FLASH_AMD_AM29LV256M {
>         display       "AMD AM29LV256M flash memory support"
>         default_value 0
>         implements    CYGINT_DEVS_FLASH_AMD_VARIANTS
>         description   "
>             When this option is enabled, the AMD flash driver will be
>             able to recognize and handle the AM29LV256M
>             part in the family."
>     }
>      
> ----------- > I added this to  flash_am29xxxxx_parts.inl 16 bit devices
>    
>    #ifdef CYGHWR_DEVS_FLASH_AMD_AM29LV256M
>     {   // AM29LV256M
>         device_id  : FLASHWORD(0x227E),
>         block_size : 0x10000 * CYGNUM_FLASH_INTERLEAVE,
>         block_count: 512,
>         device_size: 0x2000000 * CYGNUM_FLASH_INTERLEAVE,
>         base_mask  : ~(0x2000000 * CYGNUM_FLASH_INTERLEAVE - 1),
>         bootblock  : false,  
>         banked     : false
>     },
>     #endif

You probably need a little more than this if you want to reliably 
recognize multiple parts as a number of devices have the first ID of
0x227E.  Something like this:

        long_device_id: true,
        device_id  : FLASHWORD(0x227e),
        device_id2 : FLASHWORD(0x2212),
        device_id3 : FLASHWORD(0x2201),

> ----------- >I changed pkgconf(.ldi and .h) things to match my flash.
> 
> ----------- > Added a file arm_micro9_flash.c, for defines. (MICRO9 is my 
> custom board).
> 
>  //==========================================================================
> //
> //      arm_micro9_flash.c
> //
> //      Flash programming for AMD Flash devices on 
> //	CONTEC hypercontrol MICRO9 
> //
> //--------------------------------------------------------------------------
> // Device properties
> 
> #define CYGNUM_FLASH_INTERLEAVE (2)
> #define CYGNUM_FLASH_SERIES     (1)
> #define CYGNUM_FLASH_WIDTH      (16)
> #define CYGNUM_FLASH_BASE       (0x10000000u)
> 
> //--------------------------------------------------------------------------
> // Platform specific extras
> 
> //--------------------------------------------------------------------------
> #include <cyg/infra/diag.h>             // diag_printf
> // Now include the driver code.
> #include "cyg/io/flash_am29xxxxx.inl"
> 
> ----------- >Added a cdl script for my platform:
> #====================================================================
> #
> #      flash_micro9.cdl
> #
> #      FLASH memory - Hardware support on MICRO9
> #
> #====================================================================
> 
> cdl_package CYGPKG_DEVS_FLASH_MICRO9 {
>     display       "MICRO 9 FLASH memory support"
>     description   "FLASH memory device support for MICRO9"
> 
>     parent        CYGPKG_IO_FLASH
>     active_if	  CYGPKG_IO_FLASH
>     requires	  CYGPKG_HAL_ARM_ARM9_EP93XX
> 
>     implements    CYGHWR_IO_FLASH_DEVICE
>     compile       arm_micro9_flash.c
> 
>     implements    CYGINT_DEVS_FLASH_AMD_AM29XXXXX_REQUIRED
> 
>     # Arguably this should do in the generic package
>     # but then there is a logic loop so you can never enable it.
>     cdl_interface CYGINT_DEVS_FLASH_AMD_AM29XXXXX_REQUIRED {
>         display   "Generic AMD FlashFile driver required"
>     }
> 
>     # requires    CYGINT_DEVS_FLASH_AMD_VARIANTS
>     requires    CYGHWR_DEVS_FLASH_AMD_AM29LV256M
> }
> 
> ----------- > And I changed cdl script for my custom board that 
> CYGPKG_DEVS_FLASH_MICRO9 is used.
> 
> I hope that was it .... :-) 
> 
> 
> regards manfred gruber
> 
> 

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


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