bldk & Intel SCH message Network

[idata]

Hello.

I'm tring to read PMA base haddress in order to throttle the cpu clock (Z510 / U15W) by bios.

Reference data sheet is :

Intel® System Controller Hub

(Intel® SCH)External Design Specification (EDS)May 2010Revision 2.21

To issue the read on Intel Sch Message Network I'm doing:

// Intel SCH Message Network (offset 0x70 port 4)

// opcode = 0xD0 (read) // target port = 0x04 // Reg. Address = 0x70 // Byte Enable = 0x00 pciwrite32(0, 0, 0, 0xd4, 0x00000000); // Set MDR = 0 pciwrite32(0, 0, 0, 0xd0, 0xd0047000); // Issue Read command MCR delay(100); data32 = pciread32(0, 0, 0, 0xd4); sprintf(buffer, "HOST BRIDGE PMBA = 0x%08X\n\r", data32); writeString(buffer); RepeatUntilKeyPressed();

The return code is always 0x4 (data32) what's wrong?

Best Regards

[FMcNu1]

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Felix

J. Felix McNulty

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