[flashrom] [coreboot] Trying to flash coreboot onto on-board SPI chip of HP Envy H87 haswell chipset.

[Arpita Biswas]

Hi David,

That did the trick !!! Thanks a bunch ! For anyone else interested, here is
the combination of things I did :

SOIC config as (1) mentioned earlier + held down the power button for 30
sec to reset it + removed CMOS battery + removed jumper on SPI header (that
cuts off the processor signal to SPI chip) + plugged in the power cable
(that way enough power was there throughout the board for dediprog to
detect) + removed the DIM (dunno if that made any difference, but did it
since a post mentioned it anyways!).

Dediprog then detected it sweetly :) :)

Cheers,
- Arpita

On Tue, Oct 20, 2015 at 2:05 PM, David Hendricks <dhendrix at google.com>
wrote:

>
>
> On Tue, Oct 20, 2015 at 12:26 PM, Arpita Biswas <arpita.biswas07 at gmail.com
> > wrote:
>
>> Hi all,
>>
>> I am trying to update BIOS with coreboot onto HP Envy H87 haswell
>> chipset (ipm87_mp)
>> <http://www.newegg.com/Product/Product.aspx?Item=9SIA6392VN4810>. I am
>> using Dediprog + SOIC 8-pin flash clip for flashing the SPI chip (W25Q64).
>> However dediprog doesn't detect the chip when it's soldered on-board. On
>> removing the chip from board, I can detect/read/write onto it without any
>> issues.
>>
>> I've tried (and failed) with the following configurations :
>> (1) SPI pin ------> Dediprog : /CS ---> CS, DO (IO1) ---> MISO, /WP (IO2)
>> ---> 3.3V, GND ---> GND, DI (IO0) ---> MOSI, CLK ---> CLK, /HOLD (IO3) --->
>> 3.3V, VCC ---> 3.3V with motherboard power ON.
>>
>> (2) Same config as above but I tried to isolate the chip by removing CMOS
>> battery + removing jumper on SPI header + powering OFF the motherboard.
>>
>> (3) Similar as (1) and (2), but let /HOLD, /Vcc and /WP float.
>>
>> (4) I tried using flashrom on the box too as internal programmer, but it
>> did not recognize the SPI chip. Error log says "Found Programmer flash chip
>> "Opaque flash chip" (8192 kB, Programmer-specific)."
>>
>> I've a feeling that something on the motherboard is interfering with the
>> SPI chip since an off-board chip is working fine. Does anybody have any
>> pointers on what could be going wrong ?
>>
>
> I suspect your motherboard does not isolate the SPI ROM's voltage supply
> and thus your Dediprog is effectively powering other components on the
> board.
>
> If you can find a way to hold the PCH and ME in reset while the board is
> powered on, that might work. Or, with the board off, you can try using an
> external power supply (the usual warnings about possibly frying your board
> apply).
>
>
>
>>
>> Thanks in advance,
>> - Arpita
>>
>> --
>> coreboot mailing list: coreboot at coreboot.org
>> http://www.coreboot.org/mailman/listinfo/coreboot
>>
>
>
>
> --
> David Hendricks (dhendrix)
> Systems Software Engineer, Google Inc.
>
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