Re: Flash on ep8248e standard motherboards

Erik Christiansen wrote:

On Tue, Sep 04, 2007 at 12:08:47PM -0600, Alan Bennett wrote:
  

quoted

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?

  

MIRRORX16 is the correct type for Spansion GL series NOR flash. AMD spun 
off their flash business a while ago and renamed it Spansion. If you 
look on the datasheet you'll see that Spansion calls the GL technology 
'MirrorBit', and in all likelihood the device has a 16-bit data bus. The 
AMD algorithm may work but the MIRRORX16 definitely will.

regards,
Ben