[U-Boot] Query: Does Uboot support CFI flash driver forM29W128GH

[prakash bedge]

Hi Stefan,

I have did the same.
Thanks for all infomation given so far.


Regards,
Prakash
On Thu, Oct 29, 2009 at 12:51 PM, Stefan Roese <sr at denx.de> wrote:

> Hi Prakash,
>
> On Thursday 29 October 2009 07:24:25 prakash bedge wrote:
> > Can you please send me the patch details to fixup the CFI query related
> bug
> > for M29W128GH?
>
> I did send you the patch in my last mail. You just need to add this code to
> a
> board specific file, e.g. board/board_name/board_name.c.
>
> > In the code for each header file there is a macro named
> > CONFIG_FLASH_CFI_DRIVER defined in each board specific header file in
> >  folder /include/configs. But I am not seeing any #ifdef for this macro
> in
> >  code. Where this macro is being checked in the code?
>
> It's in the makefile (drivers/mdt/Makefile).
>
> > Is there any documentation giving details on how the CFI flash
> > driver executes in U-Boot?
>
> It's really simple, just copy the config options and change some
> values like CONFIG_SYS_FLASH_BANKS_LIST, CONFIG_SYS_MAX_FLASH_BANKS
> according to your hardware specs. Take a look at zeus for example:
>
> #define CONFIG_SYS_FLASH_CFI                            /* The flash is CFI
> compatible  */
> #define CONFIG_FLASH_CFI_DRIVER                 /* Use common CFI driver
>      */
>
> #define CONFIG_SYS_FLASH_BANKS_LIST     { CONFIG_SYS_FLASH_BASE }
>
> #define CONFIG_SYS_MAX_FLASH_BANKS      1       /* max number of memory
> banks           */
> #define CONFIG_SYS_MAX_FLASH_SECT       512     /* max number of sectors on
> one chip    */
>
> #define CONFIG_SYS_FLASH_ERASE_TOUT     120000  /* Timeout for Flash Erase
> (in ms)      */
> #define CONFIG_SYS_FLASH_WRITE_TOUT     500     /* Timeout for Flash Write
> (in ms)      */
>
> #define CONFIG_SYS_FLASH_USE_BUFFER_WRITE 1     /* use buffered writes (20x
> faster)     */
> #define CONFIG_SYS_FLASH_PROTECTION     1       /* use hardware flash
> protection        */
>
> #define CONFIG_SYS_FLASH_EMPTY_INFO             /* print 'E' for empty
> sector on flinfo */
> #define CONFIG_SYS_FLASH_QUIET_TEST     1       /* don't warn upon unknown
> flash        */
>
> This shouldn't be too hard.
>
> Cheers,
> Stefan
>
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