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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. #include <genarch/kbd/ns16550.h>
  58. #include <smp/smp.h>
  59. #include <smp/ipi.h>
  60. #include <arch/atomic.h>
  61. #include <panic.h>
  62. #include <print.h>
  63.  
  64. /*NS16550 as a COM 1*/
  65. #define NS16550_IRQ 4
  66. #define NS16550_PORT 0x3f8
  67.  
  68. bootinfo_t *bootinfo;
  69.  
  70. void arch_pre_main(void)
  71. {
  72.     /* Setup usermode init tasks. */
  73.  
  74. //#ifdef I460GX
  75.     unsigned int i;
  76.    
  77.     init.cnt = bootinfo->taskmap.count;
  78.    
  79.     for (i = 0; i < init.cnt; i++) {
  80.         init.tasks[i].addr = ((unsigned long) bootinfo->taskmap.tasks[i].addr) | VRN_MASK;
  81.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  82.     }
  83. /*
  84. #else  
  85.     init.cnt = 8;
  86.     init.tasks[0].addr = INIT0_ADDRESS;
  87.     init.tasks[0].size = INIT0_SIZE;
  88.     init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
  89.     init.tasks[1].size = INIT0_SIZE;
  90.     init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
  91.     init.tasks[2].size = INIT0_SIZE;
  92.     init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
  93.     init.tasks[3].size = INIT0_SIZE;
  94.     init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
  95.     init.tasks[4].size = INIT0_SIZE;
  96.     init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
  97.     init.tasks[5].size = INIT0_SIZE;
  98.     init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
  99.     init.tasks[6].size = INIT0_SIZE;
  100.     init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
  101.     init.tasks[7].size = INIT0_SIZE;
  102. #endif*/
  103. }
  104.  
  105. void arch_pre_mm_init(void)
  106. {
  107.     /* Set Interruption Vector Address (i.e. location of interruption vector table). */
  108.     iva_write((uintptr_t) &ivt);
  109.     srlz_d();
  110.    
  111. }
  112.  
  113. void arch_post_mm_init(void)
  114. {
  115.     if(config.cpu_active==1)
  116.     {
  117.         irq_init(INR_COUNT, INR_COUNT);
  118. #ifdef SKI
  119.         ski_init_console();
  120. #else  
  121.         ega_init();
  122. #endif 
  123.     }
  124.     it_init(); 
  125. }
  126.  
  127. void arch_post_cpu_init(void)
  128. {
  129. }
  130.  
  131. void arch_pre_smp_init(void)
  132. {
  133. }
  134.  
  135.  
  136. #ifdef I460GX
  137. #define POLL_INTERVAL       50000       /* 50 ms */
  138. /** Kernel thread for polling keyboard. */
  139. static void i8042_kkbdpoll(void *arg)
  140. {
  141.     while (1) {
  142.         i8042_poll();
  143. #ifdef CONFIG_NS16550
  144.         ns16550_poll();
  145. #endif
  146.         thread_usleep(POLL_INTERVAL);
  147.     }
  148. }
  149. #endif
  150.  
  151. void arch_post_smp_init(void)
  152. {
  153.  
  154.     {
  155.         /*
  156.          * Create thread that polls keyboard.
  157.          */
  158. #ifdef SKI
  159.         thread_t *t;
  160.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  161.         if (!t)
  162.             panic("cannot create kkbdpoll\n");
  163.         thread_ready(t);
  164. #endif     
  165.  
  166. #ifdef I460GX
  167.         devno_t kbd = device_assign_devno();
  168.         devno_t mouse = device_assign_devno();
  169.         /* keyboard controller */
  170.         i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
  171.  
  172. #ifdef CONFIG_NS16550
  173.         ns16550_init(kbd, NS16550_IRQ, NS16550_PORT); // as a COM 1
  174. #else
  175. #endif
  176.         thread_t *t;
  177.         t = thread_create(i8042_kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  178.         if (!t)
  179.             panic("cannot create kkbdpoll\n");
  180.         thread_ready(t);
  181.  
  182. #endif
  183.  
  184.     }
  185. }
  186.  
  187.  
  188. /** Enter userspace and never return. */
  189. void userspace(uspace_arg_t *kernel_uarg)
  190. {
  191.     psr_t psr;
  192.     rsc_t rsc;
  193.  
  194.     psr.value = psr_read();
  195.     psr.cpl = PL_USER;
  196.     psr.i = true;               /* start with interrupts enabled */
  197.     psr.ic = true;
  198.     psr.ri = 0;             /* start with instruction #0 */
  199.     psr.bn = 1;             /* start in bank 0 */
  200.  
  201.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  202.     rsc.loadrs = 0;
  203.     rsc.be = false;
  204.     rsc.pl = PL_USER;
  205.     rsc.mode = 3;               /* eager mode */
  206.  
  207.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  208.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  209.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
  210.                 (uintptr_t) kernel_uarg->uspace_uarg,
  211.                 psr.value, rsc.value);
  212.  
  213.     while (1) {
  214.         ;
  215.     }
  216. }
  217.  
  218. /** Set thread-local-storage pointer.
  219.  *
  220.  * We use r13 (a.k.a. tp) for this purpose.
  221.  */
  222. unative_t sys_tls_set(unative_t addr)
  223. {
  224.         return 0;
  225. }
  226.  
  227. /** Acquire console back for kernel
  228.  *
  229.  */
  230. void arch_grab_console(void)
  231. {
  232. #ifdef SKI
  233.     ski_kbd_grab();
  234. #endif 
  235. }
  236. /** Return console to userspace
  237.  *
  238.  */
  239. void arch_release_console(void)
  240. {
  241. #ifdef SKI
  242.     ski_kbd_release();
  243. #endif
  244. }
  245.  
  246. void arch_reboot(void)
  247. {
  248.     outb(0x64,0xfe);
  249.     while (1);
  250. }
  251.  
  252. /** @}
  253.  */
  254.