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 <[email protected]> wrote: > > > On Tue, Oct 20, 2015 at 12:26 PM, Arpita Biswas <[email protected] > > 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: [email protected] >> http://www.coreboot.org/mailman/listinfo/coreboot >> > > > > -- > David Hendricks (dhendrix) > Systems Software Engineer, Google Inc. >
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