Mirrorbit flashes

Hi,

in flash.h of the U-Boot code there are defined id's for the mirrorbit type AM29LV128M. I 've planed to introduce this flashes for working with my MPC8270. On these flashes u-boot gets its sectors and the kernel should uncompressed from it.
Is this flash the right choice for my cpu (speed)? Is it a big drawback of these flashes that they can't do simultanous writes and reads? Are there any special things to do with u-boot for this flashes ?
Another question on flash.c:
If i have a soldered flash onboard, my flash configuration will be always the same. Therefore i have no reason to search for other flashes. Have I only to fill up the "flash_info_t"-struct and tune up the erase,write.. -functions? Or there are a lot of more things to do ??

Thanks in advance

Best regards
Marco

---------
Marco Schramel
R&D
Bartec GmbH
Marco.Schramel at go.bartec.de
Phone: +49 (0)9929/301332

OK, why not?

There are very few flash chips that allow simultaneous reads and writes, and even less software to support it. U-Boot does not need such a feature, at least.

Have a look at board/tqm8xx/flash.c for working example code (32 bit bus, though).

Don't bet on it. It will take less than half a year and you will find that the flash memory is too small, and yyou want to use bigger flash

chips. Ot it is too big and you  want  to  save  production  cost  by
usiong  smaller  ones.  In  the  end  you  _will_  have several flash

configurations, and you will want to be able to install the same U-Boot image.

Only flash_info_t needs adjustment, as long as the flash chips are somewhat "compatible" (i. e. you don't try to use CFI and JEDEC chips on the same flash bank).

Best regards,

Wolfgang Denk

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Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
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