| 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 ia64
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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.h>
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| 36 | #include <arch/ski/ski.h>
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| 37 | #include <arch/drivers/it.h>
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| 38 | #include <arch/interrupt.h>
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| 39 | #include <arch/barrier.h>
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| 40 | #include <arch/asm.h>
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| 41 | #include <arch/register.h>
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| 42 | #include <arch/types.h>
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| 43 | #include <arch/context.h>
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| 44 | #include <arch/stack.h>
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| 45 | #include <arch/mm/page.h>
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| 46 | #include <mm/as.h>
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| 47 | #include <config.h>
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| 48 | #include <userspace.h>
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| 49 | #include <console/console.h>
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| 50 | #include <proc/uarg.h>
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| 51 | #include <syscall/syscall.h>
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| 52 | #include <ddi/irq.h>
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| 53 | #include <ddi/device.h>
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| 54 | #include <arch/bootinfo.h>
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| 55 | #include <genarch/drivers/legacy/ia32/io.h>
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| 56 | #include <genarch/drivers/ega/ega.h>
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| 57 | #include <genarch/kbrd/kbrd.h>
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| 58 | #include <genarch/srln/srln.h>
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| 59 | #include <genarch/drivers/i8042/i8042.h>
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| 60 | #include <genarch/drivers/ns16550/ns16550.h>
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| 61 | #include <arch/drivers/kbd.h>
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| 62 | #include <smp/smp.h>
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| 63 | #include <smp/ipi.h>
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| 64 | #include <arch/atomic.h>
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| 65 | #include <panic.h>
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| 66 | #include <print.h>
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| 67 | #include <sysinfo/sysinfo.h>
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| 68 | #include <string.h>
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| 69 |
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| 70 | /* NS16550 as a COM 1 */
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| 71 | #define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
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| 72 |
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| 73 | bootinfo_t *bootinfo;
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| 74 |
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| 75 | static uint64_t iosapic_base = 0xfec00000;
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| 76 |
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| 77 | /** Performs ia64-specific initialization before main_bsp() is called. */
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| 78 | void arch_pre_main(void)
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| 79 | {
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| 80 | /* Setup usermode init tasks. */
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| 81 |
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| 82 | unsigned int i;
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| 83 |
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| 84 | init.cnt = bootinfo->taskmap.count;
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| 85 |
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| 86 | for (i = 0; i < init.cnt; i++) {
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| 87 | init.tasks[i].addr =
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| 88 | ((unsigned long) bootinfo->taskmap.tasks[i].addr) |
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| 89 | VRN_MASK;
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| 90 | init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
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| 91 | strncpy(init.tasks[i].name, bootinfo->taskmap.tasks[i].name,
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| 92 | CONFIG_TASK_NAME_BUFLEN);
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| 93 | }
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| 94 | }
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| 95 |
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| 96 | void arch_pre_mm_init(void)
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| 97 | {
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| 98 | /*
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| 99 | * Set Interruption Vector Address (i.e. location of interruption vector
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| 100 | * table).
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| 101 | */
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| 102 | iva_write((uintptr_t) &ivt);
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| 103 | srlz_d();
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| 104 |
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| 105 | }
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| 106 |
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| 107 | static void iosapic_init(void)
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| 108 | {
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| 109 | uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
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| 110 | int i;
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| 111 |
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| 112 | int myid, myeid;
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| 113 |
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| 114 | myid = ia64_get_cpu_id();
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| 115 | myeid = ia64_get_cpu_eid();
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| 116 |
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| 117 | for (i = 0; i < 16; i++) {
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| 118 | if (i == 2)
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| 119 | continue; /* Disable Cascade interrupt */
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| 120 | ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
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| 121 | srlz_d();
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| 122 | ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
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| 123 | srlz_d();
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| 124 | ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
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| 125 | srlz_d();
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| 126 | ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
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| 127 | myeid << (48 - 32);
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| 128 | srlz_d();
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| 129 | }
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| 130 |
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| 131 | }
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| 132 |
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| 133 |
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| 134 | void arch_post_mm_init(void)
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| 135 | {
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| 136 | if (config.cpu_active == 1) {
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| 137 | iosapic_init();
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| 138 | irq_init(INR_COUNT, INR_COUNT);
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| 139 | #ifdef SKI
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| 140 | ski_init_console();
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| 141 | #else
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| 142 | ega_init(EGA_BASE, EGA_VIDEORAM);
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| 143 | #endif
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| 144 | }
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| 145 | it_init();
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| 146 |
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| 147 | }
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| 148 |
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| 149 | void arch_post_cpu_init(void)
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| 150 | {
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| 151 | }
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| 152 |
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| 153 | void arch_pre_smp_init(void)
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| 154 | {
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| 155 | }
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| 156 |
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| 157 | void arch_post_smp_init(void)
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| 158 | {
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| 159 | /*
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| 160 | * Create thread that polls keyboard.
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| 161 | */
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| 162 | #ifdef SKI
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| 163 | thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
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| 164 | if (!t)
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| 165 | panic("Cannot create kkbdpoll.");
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| 166 | thread_ready(t);
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| 167 | #endif
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| 168 |
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| 169 | #ifdef I460GX
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| 170 | devno_t devno = device_assign_devno();
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| 171 | inr_t inr;
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| 172 |
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| 173 | #ifdef CONFIG_NS16550
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| 174 | inr = NS16550_IRQ;
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| 175 | srln_init(stdin);
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| 176 | (void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL,
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| 177 | &srlnin);
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| 178 | sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
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| 179 | sysinfo_set_item_val("kbd.address.physical", NULL,
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| 180 | (uintptr_t) NS16550_BASE);
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| 181 | sysinfo_set_item_val("kbd.address.kernel", NULL,
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| 182 | (uintptr_t) NS16550_BASE);
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| 183 | #else
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| 184 | inr = IRQ_KBD;
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| 185 | kbrd_init(stdin);
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| 186 | (void) i8042_init((i8042_t *)I8042_BASE, devno, inr, &kbrdin);
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| 187 | trap_virtual_enable_irqs(1 << inr);
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| 188 | sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
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| 189 | sysinfo_set_item_val("kbd.address.physical", NULL,
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| 190 | (uintptr_t) I8042_BASE);
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| 191 | sysinfo_set_item_val("kbd.address.kernel", NULL,
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| 192 | (uintptr_t) I8042_BASE);
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| 193 | #endif
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| 194 | sysinfo_set_item_val("kbd", NULL, true);
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| 195 | sysinfo_set_item_val("kbd.devno", NULL, devno);
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| 196 | sysinfo_set_item_val("kbd.inr", NULL, inr);
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| 197 | #endif
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| 198 |
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| 199 | sysinfo_set_item_val("ia64_iospace", NULL, true);
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| 200 | sysinfo_set_item_val("ia64_iospace.address", NULL, true);
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| 201 | sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
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| 202 | }
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| 203 |
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| 204 |
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| 205 | /** Enter userspace and never return. */
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| 206 | void userspace(uspace_arg_t *kernel_uarg)
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| 207 | {
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| 208 | psr_t psr;
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| 209 | rsc_t rsc;
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| 210 |
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| 211 | psr.value = psr_read();
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| 212 | psr.cpl = PL_USER;
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| 213 | psr.i = true; /* start with interrupts enabled */
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| 214 | psr.ic = true;
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| 215 | psr.ri = 0; /* start with instruction #0 */
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| 216 | psr.bn = 1; /* start in bank 0 */
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| 217 |
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| 218 | asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
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| 219 | rsc.loadrs = 0;
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| 220 | rsc.be = false;
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| 221 | rsc.pl = PL_USER;
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| 222 | rsc.mode = 3; /* eager mode */
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| 223 |
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| 224 | switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
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| 225 | ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
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| 226 | ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
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| 227 | ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
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| 228 | (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
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| 229 |
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| 230 | while (1)
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| 231 | ;
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| 232 | }
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| 233 |
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| 234 | /** Set thread-local-storage pointer.
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| 235 | *
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| 236 | * We use r13 (a.k.a. tp) for this purpose.
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| 237 | */
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| 238 | unative_t sys_tls_set(unative_t addr)
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| 239 | {
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| 240 | return 0;
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| 241 | }
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| 242 |
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| 243 | /** Acquire console back for kernel
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| 244 | *
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| 245 | */
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| 246 | void arch_grab_console(void)
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| 247 | {
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| 248 | #ifdef SKI
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| 249 | ski_kbd_grab();
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| 250 | #endif
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| 251 | }
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| 252 |
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| 253 | /** Return console to userspace
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| 254 | *
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| 255 | */
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| 256 | void arch_release_console(void)
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| 257 | {
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| 258 | #ifdef SKI
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| 259 | ski_kbd_release();
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| 260 | #endif
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| 261 | }
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| 262 |
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| 263 | void arch_reboot(void)
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| 264 | {
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| 265 | pio_write_8((ioport8_t *)0x64, 0xfe);
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| 266 | while (1)
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| 267 | ;
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| 268 | }
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| 269 |
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| 270 | /** Construct function pointer
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| 271 | *
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| 272 | * @param fptr function pointer structure
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| 273 | * @param addr function address
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| 274 | * @param caller calling function address
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| 275 | *
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| 276 | * @return address of the function pointer
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| 277 | *
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| 278 | */
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| 279 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
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| 280 | {
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| 281 | fptr->fnc = (unative_t) addr;
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| 282 | fptr->gp = ((unative_t *) caller)[1];
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| 283 |
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| 284 | return (void *) fptr;
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| 285 | }
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| 286 |
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| 287 | /** @}
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| 288 | */
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