| 1 | /*
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| 2 | * Copyright (c) 2005 Jakub Jermar
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| 3 | * Copyright (c) 2009 Pavel Rimsky
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | /** @addtogroup sparc64
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| 31 | * @{
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| 32 | */
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| 33 | /** @file
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| 34 | */
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| 35 |
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| 36 | #include <cpu.h>
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| 37 | #include <arch.h>
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| 38 | #include <genarch/ofw/ofw_tree.h>
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| 39 | #include <arch/drivers/tick.h>
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| 40 | #include <print.h>
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| 41 | #include <arch/sun4v/md.h>
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| 42 | #include <arch/sun4v/hypercall.h>
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| 43 | #include <arch/trap/sun4v/interrupt.h>
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| 44 |
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| 45 | //#include <arch/trap/sun4v/interrupt.h>
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| 46 |
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| 47 | /** Perform sparc64 specific initialization of the processor structure for the
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| 48 | * current processor.
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| 49 | */
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| 50 | void cpu_arch_init(void)
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| 51 | {
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| 52 | uint64_t myid;
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| 53 | __hypercall_fast_ret1(0, 0, 0, 0, 0, CPU_MYID, &myid);
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| 54 |
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| 55 | CPU->arch.id = myid;
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| 56 |
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| 57 | md_node_t node = md_get_root();
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| 58 |
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| 59 | /* walk through MD, find the current CPU node & its clock-frequency */
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| 60 | while (true) {
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| 61 | if (!md_next_node(&node, "cpu")) {
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| 62 | panic("Could not determine CPU frequency.");
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| 63 | }
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| 64 | uint64_t id = 0;
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| 65 | md_get_integer_property(node, "id", &id);
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| 66 |
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| 67 | if (id == myid) {
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| 68 | uint64_t clock_frequency = 0;
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| 69 | md_get_integer_property(node, "clock-frequency",
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| 70 | &clock_frequency);
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| 71 | CPU->arch.clock_frequency = clock_frequency;
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| 72 | break;
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| 73 | }
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| 74 | }
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| 75 |
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| 76 | tick_init();
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| 77 |
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| 78 | sun4v_ipi_init();
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| 79 | }
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| 80 |
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| 81 | /**
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| 82 | * Implemented as an empty function as accessing the VER register is
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| 83 | * a hyperprivileged operation on sun4v.
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| 84 | */
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| 85 | void cpu_identify(void)
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| 86 | {
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| 87 | }
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| 88 |
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| 89 | /** Print version information for a processor.
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| 90 | *
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| 91 | * This function is called by the bootstrap processor.
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| 92 | *
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| 93 | * @param m Processor structure of the CPU for which version information is to
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| 94 | * be printed.
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| 95 | */
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| 96 | void cpu_print_report(cpu_t *m)
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| 97 | {
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| 98 | printf("cpu%d: Niagara (%d MHz)\n", m->id,
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| 99 | m->arch.clock_frequency / 1000000);
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| 100 | }
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| 101 |
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| 102 | /** @}
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| 103 | */
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