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/clk.h> |
12 | #include <linux/init.h> |
13 | #include <asm/cpuinfo.h> |
14 | #include <asm/pvr.h> |
15 | |
16 | const struct cpu_ver_key cpu_ver_lookup[] = { |
17 | /* These key value are as per MBV field in PVR0 */ |
18 | {"5.00.a" , 0x01}, |
19 | {"5.00.b" , 0x02}, |
20 | {"5.00.c" , 0x03}, |
21 | {"6.00.a" , 0x04}, |
22 | {"6.00.b" , 0x06}, |
23 | {"7.00.a" , 0x05}, |
24 | {"7.00.b" , 0x07}, |
25 | {"7.10.a" , 0x08}, |
26 | {"7.10.b" , 0x09}, |
27 | {"7.10.c" , 0x0a}, |
28 | {"7.10.d" , 0x0b}, |
29 | {"7.20.a" , 0x0c}, |
30 | {"7.20.b" , 0x0d}, |
31 | {"7.20.c" , 0x0e}, |
32 | {"7.20.d" , 0x0f}, |
33 | {"7.30.a" , 0x10}, |
34 | {"7.30.b" , 0x11}, |
35 | {"8.00.a" , 0x12}, |
36 | {"8.00.b" , 0x13}, |
37 | {"8.10.a" , 0x14}, |
38 | {"8.20.a" , 0x15}, |
39 | {"8.20.b" , 0x16}, |
40 | {"8.30.a" , 0x17}, |
41 | {"8.40.a" , 0x18}, |
42 | {"8.40.b" , 0x19}, |
43 | {"8.50.a" , 0x1a}, |
44 | {"8.50.b" , 0x1c}, |
45 | {"8.50.c" , 0x1e}, |
46 | {"9.0" , 0x1b}, |
47 | {"9.1" , 0x1d}, |
48 | {"9.2" , 0x1f}, |
49 | {"9.3" , 0x20}, |
50 | {"9.4" , 0x21}, |
51 | {"9.5" , 0x22}, |
52 | {"9.6" , 0x23}, |
53 | {"10.0" , 0x24}, |
54 | {"11.0" , 0x25}, |
55 | {NULL, 0}, |
56 | }; |
57 | |
58 | /* |
59 | * FIXME Not sure if the actual key is defined by Xilinx in the PVR |
60 | */ |
61 | const struct family_string_key family_string_lookup[] = { |
62 | {"virtex2" , 0x4}, |
63 | {"virtex2pro" , 0x5}, |
64 | {"spartan3" , 0x6}, |
65 | {"virtex4" , 0x7}, |
66 | {"virtex5" , 0x8}, |
67 | {"spartan3e" , 0x9}, |
68 | {"spartan3a" , 0xa}, |
69 | {"spartan3an" , 0xb}, |
70 | {"spartan3adsp" , 0xc}, |
71 | {"spartan6" , 0xd}, |
72 | {"virtex6" , 0xe}, |
73 | {"virtex7" , 0xf}, |
74 | /* FIXME There is no key code defined for spartan2 */ |
75 | {"spartan2" , 0xf0}, |
76 | {"kintex7" , 0x10}, |
77 | {"artix7" , 0x11}, |
78 | {"zynq7000" , 0x12}, |
79 | {"UltraScale Virtex" , 0x13}, |
80 | {"UltraScale Kintex" , 0x14}, |
81 | {"UltraScale+ Zynq" , 0x15}, |
82 | {"UltraScale+ Virtex" , 0x16}, |
83 | {"UltraScale+ Kintex" , 0x17}, |
84 | {"Spartan7" , 0x18}, |
85 | {NULL, 0}, |
86 | }; |
87 | |
88 | struct cpuinfo cpuinfo; |
89 | static struct device_node *cpu; |
90 | |
91 | void __init setup_cpuinfo(void) |
92 | { |
93 | cpu = of_get_cpu_node(0, NULL); |
94 | if (!cpu) |
95 | pr_err("You don't have cpu or are missing cpu reg property!!!\n" ); |
96 | |
97 | pr_info("%s: initialising\n" , __func__); |
98 | |
99 | switch (cpu_has_pvr()) { |
100 | case 0: |
101 | pr_warn("%s: No PVR support. Using static CPU info from FDT\n" , |
102 | __func__); |
103 | set_cpuinfo_static(&cpuinfo, cpu); |
104 | break; |
105 | /* FIXME I found weird behavior with MB 7.00.a/b 7.10.a |
106 | * please do not use FULL PVR with MMU */ |
107 | case 1: |
108 | pr_info("%s: Using full CPU PVR support\n" , |
109 | __func__); |
110 | set_cpuinfo_static(&cpuinfo, cpu); |
111 | set_cpuinfo_pvr_full(&cpuinfo, cpu); |
112 | break; |
113 | default: |
114 | pr_warn("%s: Unsupported PVR setting\n" , __func__); |
115 | set_cpuinfo_static(&cpuinfo, cpu); |
116 | } |
117 | |
118 | if (cpuinfo.mmu_privins) |
119 | pr_warn("%s: Stream instructions enabled" |
120 | " - USERSPACE CAN LOCK THIS KERNEL!\n" , __func__); |
121 | |
122 | of_node_put(cpu); |
123 | } |
124 | |
125 | void __init setup_cpuinfo_clk(void) |
126 | { |
127 | struct clk *clk; |
128 | |
129 | clk = of_clk_get(np: cpu, index: 0); |
130 | if (IS_ERR(ptr: clk)) { |
131 | pr_err("ERROR: CPU CCF input clock not found\n" ); |
132 | /* take timebase-frequency from DTS */ |
133 | cpuinfo.cpu_clock_freq = fcpu(cpu, "timebase-frequency" ); |
134 | } else { |
135 | cpuinfo.cpu_clock_freq = clk_get_rate(clk); |
136 | } |
137 | |
138 | if (!cpuinfo.cpu_clock_freq) { |
139 | pr_err("ERROR: CPU clock frequency not setup\n" ); |
140 | BUG(); |
141 | } |
142 | } |
143 | |