Hi, Is there anyone can tell me how to change MCTRL.SPDDIS in Coreboot?
The Intel Denverton blocks write permission to address A0~AE due to security concern of DIMM SPD, but this also restricts the write access to generic EEPROM access in our platform. So I need to modify the SPDDIS bit to bypass the protection. But I don’t know how to do that in Coreboot. Please help and thanks in advance.
-Hilbert This e-mail and its attachment may contain information that is confidential or privileged, and are solely for the use of the individual to whom this e-mail is addressed. If you are not the intended recipient or have received it accidentally, please immediately notify the sender by reply e-mail and destroy all copies of this email and its attachment. Please be advised that any unauthorized use, disclosure, distribution or copying of this email or its attachment is strictly prohibited. 本電子郵件及其附件可能含有機密或依法受特殊管制之資訊，僅供本電子郵件之受文者使用。台端如非本電子郵件之受文者或誤收本電子郵件，請立即回覆郵件通知寄件人，並銷毀本電子郵件之所有複本及附件。任何未經授權而使用、揭露、散佈或複製本電子郵件或其附件之行為，皆嚴格禁止。
set PcdSmbusSpdWriteDisable to disable?
On Mon, Jan 14, 2019 at 8:28 PM Hilbert Tu(杜睿哲_Pegatron) < Hilbert_Tu@pegatroncorp.com> wrote:
Hi,
Is there anyone can tell me how to change MCTRL.SPDDIS in Coreboot?
The Intel Denverton blocks write permission to address A0~AE due to security concern of DIMM SPD, but this also restricts the write access to generic EEPROM access in our platform. So I need to modify the SPDDIS bit to bypass the protection. But I don’t know how to do that in Coreboot. Please help and thanks in advance.
-Hilbert This e-mail and its attachment may contain information that is confidential or privileged, and are solely for the use of the individual to whom this e-mail is addressed. If you are not the intended recipient or have received it accidentally, please immediately notify the sender by reply e-mail and destroy all copies of this email and its attachment. Please be advised that any unauthorized use, disclosure, distribution or copying of this email or its attachment is strictly prohibited. 本電子郵件及其附件可能含有機密或依法受特殊管制之資訊，僅供本電子郵件之受文者使用。台端如非本電子郵件之受文者或誤收本電子郵件，請立即回覆郵件通知寄件人，並銷毀本電子郵件之所有複本及附件。任何未經授權而使用、揭露、散佈或複製本電子郵件或其附件之行為，皆嚴格禁止。
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Hilbert Tu(杜睿哲_Pegatron) -
Lance Zhao