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Rev | Author | Line No. | Line |
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3771 | rimsky | 1 | /* |
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 | |||
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 | |||
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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3783 | rimsky | 41 | #include <arch/sun4v/md.h> |
42 | #include <arch/sun4v/hypercall.h> |
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4638 | rimsky | 43 | #include <arch/trap/sun4v/interrupt.h> |
3771 | rimsky | 44 | |
45 | /** Perform sparc64 specific initialization of the processor structure for the |
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46 | * current processor. |
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47 | */ |
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48 | void cpu_arch_init(void) |
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49 | { |
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3783 | rimsky | 50 | uint64_t myid; |
51 | __hypercall_fast_ret1(0, 0, 0, 0, 0, CPU_MYID, &myid); |
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52 | |||
3798 | rimsky | 53 | CPU->arch.id = myid; |
54 | |||
3783 | rimsky | 55 | md_node_t node = md_get_root(); |
56 | |||
57 | /* walk through MD, find the current CPU node & its clock-frequency */ |
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58 | while (true) { |
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59 | if (!md_next_node(&node, "cpu")) { |
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60 | panic("Could not determine CPU frequency."); |
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61 | } |
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62 | |||
63 | uint64_t id = 0; |
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64 | md_get_integer_property(node, "id", &id); |
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4638 | rimsky | 65 | |
3783 | rimsky | 66 | if (id == myid) { |
67 | uint64_t clock_frequency = 0; |
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68 | md_get_integer_property(node, "clock-frequency", |
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69 | &clock_frequency); |
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70 | CPU->arch.clock_frequency = clock_frequency; |
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71 | break; |
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72 | } |
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73 | } |
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74 | |||
3771 | rimsky | 75 | tick_init(); |
4638 | rimsky | 76 | sun4v_ipi_init(); |
3771 | rimsky | 77 | } |
78 | |||
3783 | rimsky | 79 | /** |
80 | * Implemented as an empty function as accessing the VER register is |
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3771 | rimsky | 81 | * a hyperprivileged operation on sun4v. |
82 | */ |
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83 | void cpu_identify(void) |
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84 | { |
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85 | } |
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86 | |||
87 | /** Print version information for a processor. |
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88 | * |
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89 | * This function is called by the bootstrap processor. |
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90 | * |
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91 | * @param m Processor structure of the CPU for which version information is to |
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92 | * be printed. |
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93 | */ |
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94 | void cpu_print_report(cpu_t *m) |
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95 | { |
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3798 | rimsky | 96 | printf("cpu%d: Niagara (%d MHz)\n", m->id, |
97 | m->arch.clock_frequency / 1000000); |
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3771 | rimsky | 98 | } |
99 | |||
100 | /** @} |
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101 | */ |