| 1 | /*
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| 2 | * Copyright (C) 2005 Jakub Jermar
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup sparc64
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <arch/asm.h>
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| 36 | #include <cpu.h>
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| 37 | #include <arch.h>
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| 38 | #include <print.h>
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| 39 | #include <arch/register.h>
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| 40 | #include <genarch/ofw/ofw_tree.h>
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| 41 | #include <arch/types.h>
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| 42 | #include <arch/drivers/tick.h>
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| 43 | #include <arch/mm/page.h>
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| 44 | #include <arch/mm/tlb.h>
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| 45 | #include <macros.h>
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| 46 |
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| 47 | /** Perform sparc64 specific initialization of the processor structure for the current processor. */
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| 48 | void cpu_arch_init(void)
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| 49 | {
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| 50 | ofw_tree_node_t *node;
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| 51 | uint32_t mid;
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| 52 | uint32_t clock_frequency = 0;
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| 53 | upa_config_t upa_config;
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| 54 |
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| 55 | upa_config.value = upa_config_read();
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| 56 | CPU->arch.mid = upa_config.mid;
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| 57 |
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| 58 | /*
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| 59 | * Detect processor frequency.
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| 60 | */
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| 61 | node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
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| 62 | while (node) {
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| 63 | ofw_tree_property_t *prop;
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| 64 |
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| 65 | prop = ofw_tree_getprop(node, "upa-portid");
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| 66 | if (prop && prop->value) {
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| 67 | mid = *((uint32_t *) prop->value);
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| 68 | if (mid == CPU->arch.mid) {
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| 69 | prop = ofw_tree_getprop(node, "clock-frequency");
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| 70 | if (prop && prop->value)
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| 71 | clock_frequency = *((uint32_t *) prop->value);
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| 72 | }
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| 73 | }
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| 74 | node = ofw_tree_find_peer_by_device_type(node, "cpu");
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| 75 | }
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| 76 |
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| 77 | CPU->arch.clock_frequency = clock_frequency;
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| 78 | tick_init();
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| 79 |
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| 80 | /*
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| 81 | * Lock CPU stack in DTLB.
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| 82 | */
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| 83 | uintptr_t base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH);
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| 84 |
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| 85 | if (!overlaps((uintptr_t) CPU->stack, PAGE_SIZE, base, (1<<KERNEL_PAGE_WIDTH))) {
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| 86 | /*
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| 87 | * Kernel stack of this processor is not locked in DTLB.
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| 88 | * First, demap any already existing mappings.
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| 89 | * Second, create a locked mapping for it.
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| 90 | */
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| 91 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (uintptr_t) CPU->stack);
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| 92 | dtlb_insert_mapping((uintptr_t) CPU->stack, KA2PA(CPU->stack), PAGESIZE_8K, true, true);
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| 93 | }
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| 94 |
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| 95 | }
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| 96 |
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| 97 | /** Read version information from the current processor. */
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| 98 | void cpu_identify(void)
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| 99 | {
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| 100 | CPU->arch.ver.value = ver_read();
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| 101 | }
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| 102 |
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| 103 | /** Print version information for a processor.
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| 104 | *
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| 105 | * This function is called by the bootstrap processor.
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| 106 | *
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| 107 | * @param m Processor structure of the CPU for which version information is to be printed.
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| 108 | */
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| 109 | void cpu_print_report(cpu_t *m)
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| 110 | {
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| 111 | char *manuf, *impl;
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| 112 |
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| 113 | switch (m->arch.ver.manuf) {
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| 114 | case MANUF_FUJITSU:
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| 115 | manuf = "Fujitsu";
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| 116 | break;
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| 117 | case MANUF_ULTRASPARC:
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| 118 | manuf = "UltraSPARC";
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| 119 | break;
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| 120 | case MANUF_SUN:
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| 121 | manuf = "Sun";
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| 122 | break;
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| 123 | default:
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| 124 | manuf = "Unknown";
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| 125 | break;
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| 126 | }
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| 127 |
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| 128 | switch (CPU->arch.ver.impl) {
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| 129 | case IMPL_ULTRASPARCI:
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| 130 | impl = "UltraSPARC I";
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| 131 | break;
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| 132 | case IMPL_ULTRASPARCII:
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| 133 | impl = "UltraSPARC II";
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| 134 | break;
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| 135 | case IMPL_ULTRASPARCII_I:
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| 136 | impl = "UltraSPARC IIi";
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| 137 | break;
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| 138 | case IMPL_ULTRASPARCII_E:
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| 139 | impl = "UltraSPARC IIe";
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| 140 | break;
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| 141 | case IMPL_ULTRASPARCIII:
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| 142 | impl = "UltraSPARC III";
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| 143 | break;
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| 144 | case IMPL_ULTRASPARCIV_PLUS:
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| 145 | impl = "UltraSPARC IV+";
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| 146 | break;
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| 147 | case IMPL_SPARC64V:
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| 148 | impl = "SPARC 64V";
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| 149 | break;
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| 150 | default:
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| 151 | impl = "Unknown";
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| 152 | break;
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| 153 | }
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| 154 |
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| 155 | printf("cpu%d: manuf=%s, impl=%s, mask=%d (%dMHz)\n",
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| 156 | m->id, manuf, impl, m->arch.ver.mask, m->arch.clock_frequency/1000000);
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| 157 | }
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| 158 |
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| 159 | /** @}
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| 160 | */
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