![]() Can you dump your PCI CFG space register bus 0, dev 0x1f, function 5, offset 0xDC ? What is the value ? 2. To further understand what protection was enabled, could you please check the following ? 1. Just a reminder, for final production, the SPI has to be protected to prevent attack. Also, I run FPT tool in UEFI Shellįrom: Using Flash Programming Tool cause Flash Access ErrorįCERR indicates there are other SPI protection was activated. Ð Our payload is UEFI payload based on Reference Slim bootloader for Tiger Lake UP3 (MR3). Also do you run FPT under UEFI shell or under OS ? Which payload are you using ? If it is UEFI, where did you get it from ? This is important because some UEFI will enable SMI to protect SPI flash. Is it by using MmioRead() function at particular address?ģ. Can you dump DWORD at I/O port 0x1830 ? What is the value ? Ð The value of D31:F5, offset 0xDC is 0x00Ģ. Can you dump your PCI CFG space register bus 0, dev 0x1f, function 5, offset 0xDC ? What is the value ? Here is some information for your questions:ġ. From: On Behalf Of Kiet Pham Sent: Thursday, Octo9:45 PM To: Subject: Re: Using Flash Programming Tool cause Flash Access Error
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