Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
[pandora-kernel.git] / arch / microblaze / kernel / cpu / cpuinfo.c
1 /*
2  * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
3  * Copyright (C) 2007-2009 PetaLogix
4  * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
5  *
6  * This file is subject to the terms and conditions of the GNU General Public
7  * License. See the file "COPYING" in the main directory of this archive
8  * for more details.
9  */
10
11 #include <linux/init.h>
12 #include <asm/cpuinfo.h>
13 #include <asm/pvr.h>
14
15 const struct cpu_ver_key cpu_ver_lookup[] = {
16         /* These key value are as per MBV field in PVR0 */
17         {"5.00.a", 0x01},
18         {"5.00.b", 0x02},
19         {"5.00.c", 0x03},
20         {"6.00.a", 0x04},
21         {"6.00.b", 0x06},
22         {"7.00.a", 0x05},
23         {"7.00.b", 0x07},
24         {"7.10.a", 0x08},
25         {"7.10.b", 0x09},
26         {"7.10.c", 0x0a},
27         {"7.10.d", 0x0b},
28         {"7.20.a", 0x0c},
29         {"7.20.b", 0x0d},
30         {"7.20.c", 0x0e},
31         {"7.20.d", 0x0f},
32         {"7.30.a", 0x10},
33         {"7.30.b", 0x11},
34         {"8.00.a", 0x12},
35         {"8.00.b", 0x13},
36         {"8.10.a", 0x14},
37         {"8.20.a", 0x15},
38         {"8.20.b", 0x16},
39         {"8.30.a", 0x17},
40         {"8.40.a", 0x18},
41         {"8.40.b", 0x19},
42         {NULL, 0},
43 };
44
45 /*
46  * FIXME Not sure if the actual key is defined by Xilinx in the PVR
47  */
48 const struct family_string_key family_string_lookup[] = {
49         {"virtex2", 0x4},
50         {"virtex2pro", 0x5},
51         {"spartan3", 0x6},
52         {"virtex4", 0x7},
53         {"virtex5", 0x8},
54         {"spartan3e", 0x9},
55         {"spartan3a", 0xa},
56         {"spartan3an", 0xb},
57         {"spartan3adsp", 0xc},
58         {"spartan6", 0xd},
59         {"virtex6", 0xe},
60         /* FIXME There is no key code defined for spartan2 */
61         {"spartan2", 0xf0},
62         {"kintex7", 0x10},
63         {"artix7", 0x11},
64         {"zynq7000", 0x12},
65         {NULL, 0},
66 };
67
68 struct cpuinfo cpuinfo;
69
70 void __init setup_cpuinfo(void)
71 {
72         struct device_node *cpu = NULL;
73
74         cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
75         if (!cpu)
76                 pr_err("You don't have cpu!!!\n");
77
78         pr_info("%s: initialising\n", __func__);
79
80         switch (cpu_has_pvr()) {
81         case 0:
82                 pr_warn("%s: No PVR support. Using static CPU info from FDT\n",
83                         __func__);
84                 set_cpuinfo_static(&cpuinfo, cpu);
85                 break;
86 /* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
87  * please do not use FULL PVR with MMU */
88         case 1:
89                 pr_info("%s: Using full CPU PVR support\n",
90                         __func__);
91                 set_cpuinfo_static(&cpuinfo, cpu);
92                 set_cpuinfo_pvr_full(&cpuinfo, cpu);
93                 break;
94         default:
95                 pr_warn("%s: Unsupported PVR setting\n", __func__);
96                 set_cpuinfo_static(&cpuinfo, cpu);
97         }
98
99         if (cpuinfo.mmu_privins)
100                 pr_warn("%s: Stream instructions enabled"
101                         " - USERSPACE CAN LOCK THIS KERNEL!\n", __func__);
102 }