[U-Boot] [PATCH] x86: Correct Minnowboard instructions to use the right descriptor

[Simon Glass]

Hi Tom,

On 25 April 2015 at 11:54, Tom Rini <trini at konsulko.com> wrote:
> On Sat, Apr 25, 2015 at 11:46:43AM -0600, Simon Glass wrote:
>> The descriptor provided with the FSP does not seem to work. Update the
>> instructions to use the descriptor from the original Intel firmware.
>>
>> Signed-off-by: Simon Glass <sjg at chromium.org>
>> ---
>>
>>  doc/README.x86 | 23 ++++++++++++++++++++---
>>  1 file changed, 20 insertions(+), 3 deletions(-)
>>
>> diff --git a/doc/README.x86 b/doc/README.x86
>> index 0355d1c..fe31f3d 100644
>> --- a/doc/README.x86
>> +++ b/doc/README.x86
>> @@ -127,15 +127,32 @@ board/intel/minnowmax/fsp.bin
>>  Obtain the VGA RAM (Vga.dat at the time of writing) and put it into the same
>>  directory: board/intel/minnowmax/vga.bin
>>
>> -You still need two more binary blobs. These come from the sample SPI image
>> -provided in the FSP (SPI.bin at the time of writing).
>> +You still need two more binary blobs. The first comes from the original
>> +firmware image available from:
>> +
>> +http://firmware.intel.com/sites/default/files/2014-WW42.4-MinnowBoardMax.73-64-bit.bin_Release.zip
>> +
>> +Unzip it:
>> +
>> +   $ unzip 2014-WW42.4-MinnowBoardMax.73-64-bit.bin_Release.zip
>>
>>  Use ifdtool in the U-Boot tools directory to extract the images from that
>>  file, for example:
>>
>> +   $ ./tools/ifdtool -x MNW2MAX1.X64.0073.R02.1409160934.bin
>> +
>> +This will provide the descriptor file - copy this into the correct place:
>> +
>> +   $ cp flashregion_0_flashdescriptor.bin board/intel/minnowmax/descriptor.bin
>> +
>> +Then do the same with the sample SPI image provided in the FSP (SPI.bin at
>> +the time of writing) to obtain the last image. Note that this will also
>> +produce a flash descriptor file, but it does not seem to work, probably
>> +because it is not designed for the Minnowmax. That is why you need to get
>> +the flash descriptor from the original firmware as above.
>> +
>>     $ ./tools/ifdtool -x BayleyBay/SPI.bin
>>     $ cp flashregion_2_intel_me.bin board/intel/minnowmax/me.bin
>> -   $ cp flashregion_0_flashdescriptor.bin board/intel/minnowmax/descriptor.bin
>>
>>  Now you can build U-Boot and obtain u-boot.rom
>
> + Then you ... to flash u-boot.rom
>
> ? :)  Thanks!

There are some notes at the end about using a SPI emulator - em100.
Should I add something for another SPI tool also? What type of SPI
programmer do you have?

Regards,
Simon