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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup ia64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch.h>
  36. #include <arch/ski/ski.h>
  37. #include <arch/drivers/it.h>
  38. #include <arch/interrupt.h>
  39. #include <arch/barrier.h>
  40. #include <arch/asm.h>
  41. #include <arch/register.h>
  42. #include <arch/types.h>
  43. #include <arch/context.h>
  44. #include <arch/stack.h>
  45. #include <arch/mm/page.h>
  46. #include <mm/as.h>
  47. #include <config.h>
  48. #include <userspace.h>
  49. #include <console/console.h>
  50. #include <proc/uarg.h>
  51. #include <syscall/syscall.h>
  52. #include <ddi/irq.h>
  53.  
  54. void arch_pre_main(void)
  55. {
  56.     /* Setup usermode init tasks. */
  57.     init.cnt = 8;
  58.     init.tasks[0].addr = INIT0_ADDRESS;
  59.     init.tasks[0].size = INIT0_SIZE;
  60.     init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
  61.     init.tasks[1].size = INIT0_SIZE;
  62.     init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
  63.     init.tasks[2].size = INIT0_SIZE;
  64.     init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
  65.     init.tasks[3].size = INIT0_SIZE;
  66.     init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
  67.     init.tasks[4].size = INIT0_SIZE;
  68.     init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
  69.     init.tasks[5].size = INIT0_SIZE;
  70.     init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
  71.     init.tasks[6].size = INIT0_SIZE;
  72.     init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
  73.     init.tasks[7].size = INIT0_SIZE;
  74. }
  75.  
  76. void arch_pre_mm_init(void)
  77. {
  78.     /* Set Interruption Vector Address (i.e. location of interruption vector table). */
  79.     iva_write((uintptr_t) &ivt);
  80.     srlz_d();
  81.    
  82. }
  83.  
  84. void arch_post_mm_init(void)
  85. {
  86.     irq_init(INR_COUNT, INR_COUNT);
  87.     ski_init_console();
  88.     it_init(); 
  89. }
  90.  
  91. void arch_post_cpu_init(void)
  92. {
  93. }
  94.  
  95. void arch_pre_smp_init(void)
  96. {
  97. }
  98.  
  99. void arch_post_smp_init(void)
  100. {
  101.     thread_t *t;
  102.  
  103.     if (config.cpu_active == 1) {
  104.         /*
  105.          * Create thread that polls keyboard.
  106.          */
  107.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll");
  108.         if (!t)
  109.             panic("cannot create kkbdpoll\n");
  110.         thread_ready(t);
  111.     }
  112. }
  113.  
  114. /** Enter userspace and never return. */
  115. void userspace(uspace_arg_t *kernel_uarg)
  116. {
  117.     psr_t psr;
  118.     rsc_t rsc;
  119.  
  120.     psr.value = psr_read();
  121.     psr.cpl = PL_USER;
  122.     psr.i = true;               /* start with interrupts enabled */
  123.     psr.ic = true;
  124.     psr.ri = 0;             /* start with instruction #0 */
  125.     psr.bn = 1;             /* start in bank 0 */
  126.  
  127.     __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  128.     rsc.loadrs = 0;
  129.     rsc.be = false;
  130.     rsc.pl = PL_USER;
  131.     rsc.mode = 3;               /* eager mode */
  132.  
  133.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  134.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  135.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
  136.                 (uintptr_t) kernel_uarg->uspace_uarg,
  137.                 psr.value, rsc.value);
  138.  
  139.     while (1) {
  140.         ;
  141.     }
  142. }
  143.  
  144. /** Set thread-local-storage pointer.
  145.  *
  146.  * We use r13 (a.k.a. tp) for this purpose.
  147.  */
  148. unative_t sys_tls_set(unative_t addr)
  149. {
  150.         return 0;
  151. }
  152.  
  153. /** Acquire console back for kernel
  154.  *
  155.  */
  156. void arch_grab_console(void)
  157. {
  158.     ski_kbd_grab();
  159. }
  160. /** Return console to userspace
  161.  *
  162.  */
  163. void arch_release_console(void)
  164. {
  165.     ski_kbd_release();
  166. }
  167.  
  168. /** @}
  169.  */
  170.