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* Copyright (c) 2005 Jakub Jermar
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <arch/drivers/ski.h>
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#include <arch/drivers/it.h>
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#include <arch/interrupt.h>
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#include <arch/barrier.h>
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#include <arch/register.h>
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#include <arch/types.h>
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#include <arch/context.h>
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#include <arch/stack.h>
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#include <arch/mm/page.h>
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#include <userspace.h>
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#include <console/console.h>
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#include <proc/uarg.h>
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#include <syscall/syscall.h>
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#include <arch/bootinfo.h>
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#include <genarch/drivers/legacy/ia32/io.h>
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#include <genarch/drivers/ega/ega.h>
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#include <genarch/kbrd/kbrd.h>
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#include <genarch/srln/srln.h>
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#include <genarch/drivers/i8042/i8042.h>
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#include <genarch/drivers/ns16550/ns16550.h>
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#include <arch/drivers/kbd.h>
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#include <arch/atomic.h>
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#include <sysinfo/sysinfo.h>
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/* NS16550 as a COM 1 */
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#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
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static uint64_t iosapic_base = 0xfec00000;
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/** Performs ia64-specific initialization before main_bsp() is called. */
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void arch_pre_main(void)
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/* Setup usermode init tasks. */
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init.cnt = bootinfo->taskmap.count;
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for (i = 0; i < init.cnt; i++) {
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((unsigned long) bootinfo->taskmap.tasks[i].addr) |
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init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
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str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
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bootinfo->taskmap.tasks[i].name);
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void arch_pre_mm_init(void)
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* Set Interruption Vector Address (i.e. location of interruption vector
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iva_write((uintptr_t) &ivt);
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static void iosapic_init(void)
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uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
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myid = ia64_get_cpu_id();
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myeid = ia64_get_cpu_eid();
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for (i = 0; i < 16; i++) {
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continue; /* Disable Cascade interrupt */
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((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
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((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
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((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
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((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
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void arch_post_mm_init(void)
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if (config.cpu_active == 1) {
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irq_init(INR_COUNT, INR_COUNT);
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void arch_post_cpu_init(void)
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void arch_pre_smp_init(void)
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void arch_post_smp_init(void)
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ski_instance_t *ski_instance = skiin_init();
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srln_instance_t *srln_instance = srln_init();
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indev_t *sink = stdin_wire();
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indev_t *srln = srln_wire(srln_instance, sink);
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skiin_wire(ski_instance, srln);
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ega_init(EGA_BASE, EGA_VIDEORAM);
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#ifdef CONFIG_NS16550
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ns16550_instance_t *ns16550_instance
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= ns16550_init((ns16550_t *) NS16550_BASE, NS16550_IRQ, NULL, NULL);
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if (ns16550_instance) {
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srln_instance_t *srln_instance = srln_init();
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indev_t *sink = stdin_wire();
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indev_t *srln = srln_wire(srln_instance, sink);
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ns16550_wire(ns16550_instance, srln);
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sysinfo_set_item_val("kbd", NULL, true);
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sysinfo_set_item_val("kbd.inr", NULL, NS16550_IRQ);
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sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
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sysinfo_set_item_val("kbd.address.physical", NULL,
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(uintptr_t) NS16550_BASE);
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sysinfo_set_item_val("kbd.address.kernel", NULL,
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(uintptr_t) NS16550_BASE);
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i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
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if (i8042_instance) {
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kbrd_instance_t *kbrd_instance = kbrd_init();
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indev_t *sink = stdin_wire();
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indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
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i8042_wire(i8042_instance, kbrd);
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sysinfo_set_item_val("kbd", NULL, true);
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sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
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sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
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sysinfo_set_item_val("kbd.address.physical", NULL,
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(uintptr_t) I8042_BASE);
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sysinfo_set_item_val("kbd.address.kernel", NULL,
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(uintptr_t) I8042_BASE);
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sysinfo_set_item_val("ia64_iospace", NULL, true);
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sysinfo_set_item_val("ia64_iospace.address", NULL, true);
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sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
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/** Enter userspace and never return. */
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void userspace(uspace_arg_t *kernel_uarg)
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psr.value = psr_read();
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psr.i = true; /* start with interrupts enabled */
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psr.ri = 0; /* start with instruction #0 */
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psr.bn = 1; /* start in bank 0 */
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asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
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rsc.mode = 3; /* eager mode */
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switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
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((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
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ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
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((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
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(uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
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/** Set thread-local-storage pointer.
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* We use r13 (a.k.a. tp) for this purpose.
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unative_t sys_tls_set(unative_t addr)
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/** Acquire console back for kernel
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void arch_grab_console(void)
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/** Return console to userspace
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void arch_release_console(void)
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void arch_reboot(void)
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pio_write_8((ioport8_t *)0x64, 0xfe);
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/** Construct function pointer
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* @param fptr function pointer structure
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* @param addr function address
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* @param caller calling function address
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* @return address of the function pointer
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void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
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fptr->fnc = (unative_t) addr;
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fptr->gp = ((unative_t *) caller)[1];
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return (void *) fptr;