Flash on ep8248e standard motherboards

Erik Christiansen erik at dd.nec.com.au
Thu Sep 13 18:25:58 EST 2007


On Tue, Sep 04, 2007 at 12:08:47PM -0600, Alan Bennett wrote:
> BDI 2000 Config File:
>   ;  initialize - FLASH BR0 & OR0 (64 Mbyte)
>   ;*******************************************
>   WM32    0xf0010100     0xfc001801
>   WM32     0xf0010104     0xfc0008c2
>   [FLASH]
>   CHIPTYPE    MIRRORX16
>   CHIPSIZE    0x2000000
>   BUSWIDTH    16

Having just taken delivery of an ep8248e, I'm surprised that the
supplied flash config is commented out and erroneous:

[FLASH]
;CHIPTYPE    AM29F       ;Flash type (AM29F | AM29BX8 | AM29BX16 | I28BX8 | I28BX16)
;CHIPSIZE    0x200000    ;The size of one flash chip in bytes (e.g. AM29F010 = 0x20000)
;BUSWIDTH    8           ;The width of the flash memory bus in bits (8 | 16 | 32 | 64)
;

Did you start with the Embedded Planet offering, in your current effort
to create a usable config? Is MIRRORX16 more than a guess?

I've found that my flash chips are "spansion GL256N10FFI02", which
AFAICT are S29GL256N10FFI02 from AMD, as we used to know them.
I wonder if S29M32X16 is a likely guess for CHIPTYPE on the card which
has landed in my lap?

Maybe the most important question is: Will a wrong algorithm choice let
the magic smoke out?

Erik
(With just one toenail on the road, so far.)


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