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(cpu, 0); 130 if (IS_ERR(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