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