140 lines
3.1 KiB
C
140 lines
3.1 KiB
C
/*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2007-2009 PetaLogix
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* Copyright (C) 2007 John Williams <john.williams@petalogix.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/clk.h>
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#include <linux/init.h>
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#include <asm/cpuinfo.h>
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#include <asm/pvr.h>
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const struct cpu_ver_key cpu_ver_lookup[] = {
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/* These key value are as per MBV field in PVR0 */
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{"5.00.a", 0x01},
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{"5.00.b", 0x02},
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{"5.00.c", 0x03},
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{"6.00.a", 0x04},
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{"6.00.b", 0x06},
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{"7.00.a", 0x05},
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{"7.00.b", 0x07},
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{"7.10.a", 0x08},
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{"7.10.b", 0x09},
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{"7.10.c", 0x0a},
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{"7.10.d", 0x0b},
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{"7.20.a", 0x0c},
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{"7.20.b", 0x0d},
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{"7.20.c", 0x0e},
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{"7.20.d", 0x0f},
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{"7.30.a", 0x10},
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{"7.30.b", 0x11},
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{"8.00.a", 0x12},
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{"8.00.b", 0x13},
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{"8.10.a", 0x14},
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{"8.20.a", 0x15},
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{"8.20.b", 0x16},
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{"8.30.a", 0x17},
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{"8.40.a", 0x18},
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{"8.40.b", 0x19},
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{"8.50.a", 0x1a},
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{"8.50.b", 0x1c},
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{"8.50.c", 0x1e},
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{"9.0", 0x1b},
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{"9.1", 0x1d},
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{"9.2", 0x1f},
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{"9.3", 0x20},
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{"9.4", 0x21},
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{"9.5", 0x22},
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{"9.6", 0x23},
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{"10.0", 0x24},
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{NULL, 0},
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};
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/*
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* FIXME Not sure if the actual key is defined by Xilinx in the PVR
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*/
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const struct family_string_key family_string_lookup[] = {
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{"virtex2", 0x4},
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{"virtex2pro", 0x5},
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{"spartan3", 0x6},
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{"virtex4", 0x7},
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{"virtex5", 0x8},
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{"spartan3e", 0x9},
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{"spartan3a", 0xa},
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{"spartan3an", 0xb},
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{"spartan3adsp", 0xc},
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{"spartan6", 0xd},
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{"virtex6", 0xe},
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{"virtex7", 0xf},
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/* FIXME There is no key code defined for spartan2 */
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{"spartan2", 0xf0},
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{"kintex7", 0x10},
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{"artix7", 0x11},
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{"zynq7000", 0x12},
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{"UltraScale Virtex", 0x13},
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{"UltraScale Kintex", 0x14},
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{"UltraScale+ Zynq", 0x15},
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{"UltraScale+ Virtex", 0x16},
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{"UltraScale+ Kintex", 0x17},
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{"Spartan7", 0x18},
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{NULL, 0},
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};
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struct cpuinfo cpuinfo;
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static struct device_node *cpu;
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void __init setup_cpuinfo(void)
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{
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cpu = (struct device_node *) of_find_node_by_type(NULL, "cpu");
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if (!cpu)
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pr_err("You don't have cpu!!!\n");
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pr_info("%s: initialising\n", __func__);
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switch (cpu_has_pvr()) {
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case 0:
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pr_warn("%s: No PVR support. Using static CPU info from FDT\n",
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__func__);
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set_cpuinfo_static(&cpuinfo, cpu);
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break;
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/* FIXME I found weird behavior with MB 7.00.a/b 7.10.a
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* please do not use FULL PVR with MMU */
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case 1:
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pr_info("%s: Using full CPU PVR support\n",
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__func__);
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set_cpuinfo_static(&cpuinfo, cpu);
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set_cpuinfo_pvr_full(&cpuinfo, cpu);
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break;
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default:
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pr_warn("%s: Unsupported PVR setting\n", __func__);
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set_cpuinfo_static(&cpuinfo, cpu);
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}
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if (cpuinfo.mmu_privins)
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pr_warn("%s: Stream instructions enabled"
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" - USERSPACE CAN LOCK THIS KERNEL!\n", __func__);
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}
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void __init setup_cpuinfo_clk(void)
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{
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struct clk *clk;
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clk = of_clk_get(cpu, 0);
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if (IS_ERR(clk)) {
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pr_err("ERROR: CPU CCF input clock not found\n");
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/* take timebase-frequency from DTS */
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cpuinfo.cpu_clock_freq = fcpu(cpu, "timebase-frequency");
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} else {
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cpuinfo.cpu_clock_freq = clk_get_rate(clk);
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}
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if (!cpuinfo.cpu_clock_freq) {
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pr_err("ERROR: CPU clock frequency not setup\n");
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BUG();
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}
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}
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