| 0,0 → 1,157 |
|---|
| /* |
| * Copyright (C) 2005 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup ia64 |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <arch.h> |
| #include <arch/ski/ski.h> |
| #include <arch/drivers/it.h> |
| #include <arch/interrupt.h> |
| #include <arch/barrier.h> |
| #include <arch/asm.h> |
| #include <arch/register.h> |
| #include <arch/types.h> |
| #include <arch/context.h> |
| #include <arch/stack.h> |
| #include <arch/mm/page.h> |
| #include <mm/as.h> |
| #include <config.h> |
| #include <userspace.h> |
| #include <console/console.h> |
| #include <proc/uarg.h> |
| #include <syscall/syscall.h> |
| |
| static int kbd_release=0; |
| |
| void arch_pre_main(void) |
| { |
| /* Setup usermode init tasks. */ |
| init.cnt = 8; |
| init.tasks[0].addr = INIT0_ADDRESS; |
| init.tasks[0].size = INIT0_SIZE; |
| init.tasks[1].addr = INIT0_ADDRESS + 0x400000; |
| init.tasks[1].size = INIT0_SIZE; |
| init.tasks[2].addr = INIT0_ADDRESS + 0x800000; |
| init.tasks[2].size = INIT0_SIZE; |
| init.tasks[3].addr = INIT0_ADDRESS + 0xc00000; |
| init.tasks[3].size = INIT0_SIZE; |
| init.tasks[4].addr = INIT0_ADDRESS + 0x1000000; |
| init.tasks[4].size = INIT0_SIZE; |
| init.tasks[5].addr = INIT0_ADDRESS + 0x1400000; |
| init.tasks[5].size = INIT0_SIZE; |
| init.tasks[6].addr = INIT0_ADDRESS + 0x1800000; |
| init.tasks[6].size = INIT0_SIZE; |
| init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000; |
| init.tasks[7].size = INIT0_SIZE; |
| } |
| |
| void arch_pre_mm_init(void) |
| { |
| /* Set Interruption Vector Address (i.e. location of interruption vector table). */ |
| iva_write((uintptr_t) &ivt); |
| srlz_d(); |
| |
| ski_init_console(); |
| it_init(); |
| } |
| |
| void arch_post_mm_init(void) |
| { |
| ski_set_console_sysinfo(); |
| } |
| |
| void arch_pre_smp_init(void) |
| { |
| } |
| |
| void arch_post_smp_init(void) |
| { |
| } |
| |
| /** Enter userspace and never return. */ |
| void userspace(uspace_arg_t *kernel_uarg) |
| { |
| psr_t psr; |
| rsc_t rsc; |
| |
| psr.value = psr_read(); |
| psr.cpl = PL_USER; |
| psr.i = true; /* start with interrupts enabled */ |
| psr.ic = true; |
| psr.ri = 0; /* start with instruction #0 */ |
| psr.bn = 1; /* start in bank 0 */ |
| |
| __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value)); |
| rsc.loadrs = 0; |
| rsc.be = false; |
| rsc.pl = PL_USER; |
| rsc.mode = 3; /* eager mode */ |
| |
| switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry, |
| ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT), |
| ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE, |
| (uintptr_t) kernel_uarg->uspace_uarg, |
| psr.value, rsc.value); |
| |
| while (1) { |
| ; |
| } |
| } |
| |
| /** Set thread-local-storage pointer. |
| * |
| * We use r13 (a.k.a. tp) for this purpose. |
| */ |
| unative_t sys_tls_set(unative_t addr) |
| { |
| return 0; |
| } |
| |
| /** Acquire console back for kernel |
| * |
| */ |
| void arch_grab_console(void) |
| { |
| kbd_release=kbd_uspace; |
| kbd_uspace=0; |
| } |
| /** Return console to userspace |
| * |
| */ |
| void arch_release_console(void) |
| { |
| kbd_uspace=kbd_release; |
| } |
| |
| /** @} |
| */ |
| |