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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. #include <sysinfo/sysinfo.h>
  64.  
  65. /*NS16550 as a COM 1*/
  66. #define NS16550_IRQ 4
  67. #define NS16550_PORT 0x3f8
  68.  
  69. bootinfo_t *bootinfo;
  70.  
  71. void arch_pre_main(void)
  72. {
  73.     /* Setup usermode init tasks. */
  74.  
  75. //#ifdef I460GX
  76.     unsigned int i;
  77.    
  78.     init.cnt = bootinfo->taskmap.count;
  79.    
  80.     for (i = 0; i < init.cnt; i++) {
  81.         init.tasks[i].addr = ((unsigned long) bootinfo->taskmap.tasks[i].addr) | VRN_MASK;
  82.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  83.     }
  84. /*
  85. #else  
  86.     init.cnt = 8;
  87.     init.tasks[0].addr = INIT0_ADDRESS;
  88.     init.tasks[0].size = INIT0_SIZE;
  89.     init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
  90.     init.tasks[1].size = INIT0_SIZE;
  91.     init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
  92.     init.tasks[2].size = INIT0_SIZE;
  93.     init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
  94.     init.tasks[3].size = INIT0_SIZE;
  95.     init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
  96.     init.tasks[4].size = INIT0_SIZE;
  97.     init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
  98.     init.tasks[5].size = INIT0_SIZE;
  99.     init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
  100.     init.tasks[6].size = INIT0_SIZE;
  101.     init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
  102.     init.tasks[7].size = INIT0_SIZE;
  103. #endif*/
  104. }
  105.  
  106. void arch_pre_mm_init(void)
  107. {
  108.     /* Set Interruption Vector Address (i.e. location of interruption vector table). */
  109.     iva_write((uintptr_t) &ivt);
  110.     srlz_d();
  111.    
  112. }
  113.  
  114. void arch_post_mm_init(void)
  115. {
  116.     if(config.cpu_active==1)
  117.     {
  118.         irq_init(INR_COUNT, INR_COUNT);
  119. #ifdef SKI
  120.         ski_init_console();
  121. #else  
  122.         ega_init();
  123. #endif 
  124.     }
  125.     it_init(); 
  126. }
  127.  
  128. void arch_post_cpu_init(void)
  129. {
  130. }
  131.  
  132. void arch_pre_smp_init(void)
  133. {
  134. }
  135.  
  136.  
  137. #ifdef I460GX
  138. #define POLL_INTERVAL       50000       /* 50 ms */
  139. /** Kernel thread for polling keyboard. */
  140. static void i8042_kkbdpoll(void *arg)
  141. {
  142.     while (1) {
  143.         i8042_poll();
  144. #ifdef CONFIG_NS16550
  145.         ns16550_poll();
  146. #endif
  147.         thread_usleep(POLL_INTERVAL);
  148.     }
  149. }
  150. #endif
  151.  
  152. void arch_post_smp_init(void)
  153. {
  154.  
  155.     {
  156.         /*
  157.          * Create thread that polls keyboard.
  158.          */
  159. #ifdef SKI
  160.         thread_t *t;
  161.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  162.         if (!t)
  163.             panic("cannot create kkbdpoll\n");
  164.         thread_ready(t);
  165. #endif     
  166.  
  167. #ifdef I460GX
  168.         devno_t kbd = device_assign_devno();
  169.         devno_t mouse = device_assign_devno();
  170.         /* keyboard controller */
  171.         i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
  172.  
  173. #ifdef CONFIG_NS16550
  174.         ns16550_init(kbd, NS16550_IRQ, NS16550_PORT); // as a COM 1
  175. #else
  176. #endif
  177.         thread_t *t;
  178.         t = thread_create(i8042_kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  179.         if (!t)
  180.             panic("cannot create kkbdpoll\n");
  181.         thread_ready(t);
  182.  
  183. #endif
  184.  
  185.     }
  186.    
  187.     sysinfo_set_item_val("ia64_iospace", NULL, true);
  188.     sysinfo_set_item_val("ia64_iospace.address", NULL, true);
  189.     sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
  190.  
  191. }
  192.  
  193.  
  194. /** Enter userspace and never return. */
  195. void userspace(uspace_arg_t *kernel_uarg)
  196. {
  197.     psr_t psr;
  198.     rsc_t rsc;
  199.  
  200.     psr.value = psr_read();
  201.     psr.cpl = PL_USER;
  202.     psr.i = true;               /* start with interrupts enabled */
  203.     psr.ic = true;
  204.     psr.ri = 0;             /* start with instruction #0 */
  205.     psr.bn = 1;             /* start in bank 0 */
  206.  
  207.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  208.     rsc.loadrs = 0;
  209.     rsc.be = false;
  210.     rsc.pl = PL_USER;
  211.     rsc.mode = 3;               /* eager mode */
  212.  
  213.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  214.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  215.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
  216.                 (uintptr_t) kernel_uarg->uspace_uarg,
  217.                 psr.value, rsc.value);
  218.  
  219.     while (1) {
  220.         ;
  221.     }
  222. }
  223.  
  224. /** Set thread-local-storage pointer.
  225.  *
  226.  * We use r13 (a.k.a. tp) for this purpose.
  227.  */
  228. unative_t sys_tls_set(unative_t addr)
  229. {
  230.         return 0;
  231. }
  232.  
  233. /** Acquire console back for kernel
  234.  *
  235.  */
  236. void arch_grab_console(void)
  237. {
  238. #ifdef SKI
  239.     ski_kbd_grab();
  240. #endif 
  241. }
  242. /** Return console to userspace
  243.  *
  244.  */
  245. void arch_release_console(void)
  246. {
  247. #ifdef SKI
  248.     ski_kbd_release();
  249. #endif
  250. }
  251.  
  252. void arch_reboot(void)
  253. {
  254.     outb(0x64,0xfe);
  255.     while (1);
  256. }
  257.  
  258. /** @}
  259.  */
  260.