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>
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
11 #include <linux/clk.h>
12 #include <linux/init.h>
13 #include <asm/cpuinfo.h>
16 const struct cpu_ver_key cpu_ver_lookup[] = {
17 /* These key value are as per MBV field in PVR0 */
49 * FIXME Not sure if the actual key is defined by Xilinx in the PVR
51 const struct family_string_key family_string_lookup[] = {
60 {"spartan3adsp", 0xc},
63 /* FIXME There is no key code defined for spartan2 */
71 struct cpuinfo cpuinfo;
72 static struct device_node *cpu;
74 void __init setup_cpuinfo(void)
76 cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
78 pr_err("You don't have cpu!!!\n");
80 pr_info("%s: initialising\n", __func__);
82 switch (cpu_has_pvr()) {
84 pr_warn("%s: No PVR support. Using static CPU info from FDT\n",
86 set_cpuinfo_static(&cpuinfo, cpu);
88 /* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
89 * please do not use FULL PVR with MMU */
91 pr_info("%s: Using full CPU PVR support\n",
93 set_cpuinfo_static(&cpuinfo, cpu);
94 set_cpuinfo_pvr_full(&cpuinfo, cpu);
97 pr_warn("%s: Unsupported PVR setting\n", __func__);
98 set_cpuinfo_static(&cpuinfo, cpu);
101 if (cpuinfo.mmu_privins)
102 pr_warn("%s: Stream instructions enabled"
103 " - USERSPACE CAN LOCK THIS KERNEL!\n", __func__);
106 void __init setup_cpuinfo_clk(void)
110 clk = of_clk_get(cpu, 0);
112 pr_err("ERROR: CPU CCF input clock not found\n");
113 /* take timebase-frequency from DTS */
114 cpuinfo.cpu_clock_freq = fcpu(cpu, "timebase-frequency");
116 cpuinfo.cpu_clock_freq = clk_get_rate(clk);
119 if (!cpuinfo.cpu_clock_freq) {
120 pr_err("ERROR: CPU clock frequency not setup\n");