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
setup_cpuinfo(void)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 }
103