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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. #include <ddi/device.h>
  54. #include <arch/drivers/ega.h>
  55. #include <arch/bootinfo.h>
  56. #include <genarch/kbd/i8042.h>
  57.  
  58. bootinfo_t *bootinfo;
  59.  
  60. void arch_pre_main(void)
  61. {
  62.     /* Setup usermode init tasks. */
  63.  
  64. #ifdef I460GX
  65.     int i;
  66.     init.cnt = bootinfo->taskmap.count;
  67.     for(i=0;i<init.cnt;i++)
  68.     {
  69.         init.tasks[i].addr = ((unsigned long)bootinfo->taskmap.tasks[i].addr)|VRN_MASK;
  70.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  71.     }
  72. #else  
  73.     init.cnt = 8;
  74.     init.tasks[0].addr = INIT0_ADDRESS;
  75.     init.tasks[0].size = INIT0_SIZE;
  76.     init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
  77.     init.tasks[1].size = INIT0_SIZE;
  78.     init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
  79.     init.tasks[2].size = INIT0_SIZE;
  80.     init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
  81.     init.tasks[3].size = INIT0_SIZE;
  82.     init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
  83.     init.tasks[4].size = INIT0_SIZE;
  84.     init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
  85.     init.tasks[5].size = INIT0_SIZE;
  86.     init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
  87.     init.tasks[6].size = INIT0_SIZE;
  88.     init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
  89.     init.tasks[7].size = INIT0_SIZE;
  90. #endif
  91. }
  92.  
  93. void arch_pre_mm_init(void)
  94. {
  95.     /* Set Interruption Vector Address (i.e. location of interruption vector table). */
  96.     iva_write((uintptr_t) &ivt);
  97.     srlz_d();
  98.    
  99. }
  100.  
  101. void arch_post_mm_init(void)
  102. {
  103.     irq_init(INR_COUNT, INR_COUNT);
  104. #ifdef SKI
  105.     ski_init_console();
  106. #else  
  107.     ega_init();
  108. #endif 
  109.     it_init(); 
  110. }
  111.  
  112. void arch_post_cpu_init(void)
  113. {
  114. }
  115.  
  116. void arch_pre_smp_init(void)
  117. {
  118. }
  119.  
  120.  
  121. #ifdef I460GX
  122. #define POLL_INTERVAL       50000       /* 50 ms */
  123. /** Kernel thread for polling keyboard. */
  124. static void i8042_kkbdpoll(void *arg)
  125. {
  126.     while (1) {
  127.         i8042_poll();
  128.         thread_usleep(POLL_INTERVAL);
  129.     }
  130. }
  131. #endif
  132.  
  133. void arch_post_smp_init(void)
  134. {
  135.  
  136.     if (config.cpu_active == 1) {
  137.         /*
  138.          * Create thread that polls keyboard.
  139.          */
  140. #ifdef SKI
  141.         thread_t *t;
  142.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  143.         if (!t)
  144.             panic("cannot create kkbdpoll\n");
  145.         thread_ready(t);
  146. #endif     
  147.  
  148. #ifdef I460GX
  149.         devno_t kbd = device_assign_devno();
  150.         devno_t mouse = device_assign_devno();
  151.         /* keyboard controller */
  152.         i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
  153.  
  154.         thread_t *t;
  155.         t = thread_create(i8042_kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  156.         if (!t)
  157.             panic("cannot create kkbdpoll\n");
  158.         thread_ready(t);
  159.  
  160. #endif
  161.  
  162.     }
  163. }
  164.  
  165. /** Enter userspace and never return. */
  166. void userspace(uspace_arg_t *kernel_uarg)
  167. {
  168.     psr_t psr;
  169.     rsc_t rsc;
  170.  
  171.     psr.value = psr_read();
  172.     psr.cpl = PL_USER;
  173.     psr.i = true;               /* start with interrupts enabled */
  174.     psr.ic = true;
  175.     psr.ri = 0;             /* start with instruction #0 */
  176.     psr.bn = 1;             /* start in bank 0 */
  177.  
  178.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  179.     rsc.loadrs = 0;
  180.     rsc.be = false;
  181.     rsc.pl = PL_USER;
  182.     rsc.mode = 3;               /* eager mode */
  183.  
  184.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  185.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  186.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
  187.                 (uintptr_t) kernel_uarg->uspace_uarg,
  188.                 psr.value, rsc.value);
  189.  
  190.     while (1) {
  191.         ;
  192.     }
  193. }
  194.  
  195. /** Set thread-local-storage pointer.
  196.  *
  197.  * We use r13 (a.k.a. tp) for this purpose.
  198.  */
  199. unative_t sys_tls_set(unative_t addr)
  200. {
  201.         return 0;
  202. }
  203.  
  204. /** Acquire console back for kernel
  205.  *
  206.  */
  207. void arch_grab_console(void)
  208. {
  209. #ifdef SKI
  210.     ski_kbd_grab();
  211. #endif 
  212. }
  213. /** Return console to userspace
  214.  *
  215.  */
  216. void arch_release_console(void)
  217. {
  218. #ifdef SKI
  219.     ski_kbd_release();
  220. #endif
  221. }
  222.  
  223. void arch_reboot(void)
  224. {
  225.     // TODO
  226.     while (1);
  227. }
  228.  
  229. /** @}
  230.  */
  231.