src/kernel/cpuid.C


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63

/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* $Source: src/kernel/cpuid.C $                                          */
/*                                                                        */
/* IBM CONFIDENTIAL                                                       */
/*                                                                        */
/* COPYRIGHT International Business Machines Corp. 2011,2012              */
/*                                                                        */
/* p1                                                                     */
/*                                                                        */
/* Object Code Only (OCO) source materials                                */
/* Licensed Internal Code Source Materials                                */
/* IBM HostBoot Licensed Internal Code                                    */
/*                                                                        */
/* The source code for this program is not published or otherwise         */
/* divested of its trade secrets, irrespective of what has been           */
/* deposited with the U.S. Copyright Office.                              */
/*                                                                        */
/* Origin: 30                                                             */
/*                                                                        */
/* IBM_PROLOG_END_TAG                                                     */
/** @file cpuid.C
 *  Implementation of the cpuid functions.
 */

#include <kernel/cpuid.H>

namespace CpuID
{
    ProcessorCoreType getCpuType()
    {
        uint64_t l_pvr = getPVR();

        // Layout of the PVR is (32-bit):
        //     2 nibbles reserved.
        //     2 nibbles chip type.
        //     1 nibble technology.
        //     1 nibble major DD.
        //     1 nibble reserved.
        //     1 nibble minor DD.

        switch(l_pvr & 0xFFFF0000)
        {
            case 0x004B0000:
                return CORE_POWER8_MURANO;

            case 0x004D0000:
                return CORE_POWER8_VENICE;

            default:
                return CORE_UNKNOWN;
        }
    }

    uint8_t getCpuDD()
    {
        uint64_t l_pvr = getPVR();
        return ((l_pvr & 0x0F00) >> 4) | (l_pvr & 0x000F);
    }
};