~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/microblaze/kernel/cpu/cpuinfo.c

Version: ~ [ linux-5.2-rc1 ] ~ [ linux-5.1.2 ] ~ [ linux-5.0.16 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.43 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.119 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.176 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.179 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.139 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.67 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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         {NULL, 0},
 53 };
 54 
 55 /*
 56  * FIXME Not sure if the actual key is defined by Xilinx in the PVR
 57  */
 58 const struct family_string_key family_string_lookup[] = {
 59         {"virtex2", 0x4},
 60         {"virtex2pro", 0x5},
 61         {"spartan3", 0x6},
 62         {"virtex4", 0x7},
 63         {"virtex5", 0x8},
 64         {"spartan3e", 0x9},
 65         {"spartan3a", 0xa},
 66         {"spartan3an", 0xb},
 67         {"spartan3adsp", 0xc},
 68         {"spartan6", 0xd},
 69         {"virtex6", 0xe},
 70         {"virtex7", 0xf},
 71         /* FIXME There is no key code defined for spartan2 */
 72         {"spartan2", 0xf0},
 73         {"kintex7", 0x10},
 74         {"artix7", 0x11},
 75         {"zynq7000", 0x12},
 76         {"UltraScale Virtex", 0x13},
 77         {"UltraScale Kintex", 0x14},
 78         {NULL, 0},
 79 };
 80 
 81 struct cpuinfo cpuinfo;
 82 static struct device_node *cpu;
 83 
 84 void __init setup_cpuinfo(void)
 85 {
 86         cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
 87         if (!cpu)
 88                 pr_err("You don't have cpu!!!\n");
 89 
 90         pr_info("%s: initialising\n", __func__);
 91 
 92         switch (cpu_has_pvr()) {
 93         case 0:
 94                 pr_warn("%s: No PVR support. Using static CPU info from FDT\n",
 95                         __func__);
 96                 set_cpuinfo_static(&cpuinfo, cpu);
 97                 break;
 98 /* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
 99  * please do not use FULL PVR with MMU */
100         case 1:
101                 pr_info("%s: Using full CPU PVR support\n",
102                         __func__);
103                 set_cpuinfo_static(&cpuinfo, cpu);
104                 set_cpuinfo_pvr_full(&cpuinfo, cpu);
105                 break;
106         default:
107                 pr_warn("%s: Unsupported PVR setting\n", __func__);
108                 set_cpuinfo_static(&cpuinfo, cpu);
109         }
110 
111         if (cpuinfo.mmu_privins)
112                 pr_warn("%s: Stream instructions enabled"
113                         " - USERSPACE CAN LOCK THIS KERNEL!\n", __func__);
114 }
115 
116 void __init setup_cpuinfo_clk(void)
117 {
118         struct clk *clk;
119 
120         clk = of_clk_get(cpu, 0);
121         if (IS_ERR(clk)) {
122                 pr_err("ERROR: CPU CCF input clock not found\n");
123                 /* take timebase-frequency from DTS */
124                 cpuinfo.cpu_clock_freq = fcpu(cpu, "timebase-frequency");
125         } else {
126                 cpuinfo.cpu_clock_freq = clk_get_rate(clk);
127         }
128 
129         if (!cpuinfo.cpu_clock_freq) {
130                 pr_err("ERROR: CPU clock frequency not setup\n");
131                 BUG();
132         }
133 }
134 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp