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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/bootinfo.h>
  55. #include <genarch/drivers/legacy/ia32/io.h>
  56. #include <genarch/drivers/ega/ega.h>
  57. #include <genarch/kbd/i8042.h>
  58. #include <genarch/kbd/ns16550.h>
  59. #include <smp/smp.h>
  60. #include <smp/ipi.h>
  61. #include <arch/atomic.h>
  62. #include <panic.h>
  63. #include <print.h>
  64. #include <sysinfo/sysinfo.h>
  65.  
  66. /* NS16550 as a COM 1 */
  67. #define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
  68.  
  69. bootinfo_t *bootinfo;
  70.  
  71. static uint64_t iosapic_base = 0xfec00000;
  72.  
  73. /** Performs ia64-specific initialization before main_bsp() is called. */
  74. void arch_pre_main(void)
  75. {
  76.     /* Setup usermode init tasks. */
  77.  
  78.     unsigned int i;
  79.    
  80.     init.cnt = bootinfo->taskmap.count;
  81.    
  82.     for (i = 0; i < init.cnt; i++) {
  83.         init.tasks[i].addr =
  84.             ((unsigned long) bootinfo->taskmap.tasks[i].addr) |
  85.             VRN_MASK;
  86.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  87.     }
  88. }
  89.  
  90. void arch_pre_mm_init(void)
  91. {
  92.     /*
  93.      * Set Interruption Vector Address (i.e. location of interruption vector
  94.      * table).
  95.      */
  96.     iva_write((uintptr_t) &ivt);
  97.     srlz_d();
  98.    
  99. }
  100.  
  101. static void iosapic_init(void)
  102. {
  103.     uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
  104.     int i;
  105.    
  106.     int myid, myeid;
  107.    
  108.     myid = ia64_get_cpu_id();
  109.     myeid = ia64_get_cpu_eid();
  110.  
  111.     for (i = 0; i < 16; i++) {
  112.         if (i == 2)
  113.             continue;    /* Disable Cascade interrupt */
  114.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
  115.         srlz_d();
  116.         ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
  117.         srlz_d();
  118.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
  119.         srlz_d();
  120.         ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
  121.             myeid << (48 - 32);
  122.         srlz_d();
  123.     }
  124.  
  125. }
  126.  
  127.  
  128. void arch_post_mm_init(void)
  129. {
  130.     if (config.cpu_active == 1) {
  131.         iosapic_init();
  132.         irq_init(INR_COUNT, INR_COUNT);
  133. #ifdef SKI
  134.         ski_init_console();
  135. #else
  136.         ega_init(EGA_BASE, EGA_VIDEORAM);
  137. #endif
  138.     }
  139.     it_init();
  140.        
  141. }
  142.  
  143. void arch_post_cpu_init(void)
  144. {
  145. }
  146.  
  147. void arch_pre_smp_init(void)
  148. {
  149. }
  150.  
  151. void arch_post_smp_init(void)
  152. {
  153.     /*
  154.      * Create thread that polls keyboard.
  155.      */
  156. #ifdef SKI
  157.     thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  158.     if (!t)
  159.         panic("Cannot create kkbdpoll.");
  160.     thread_ready(t);
  161. #endif     
  162.  
  163. #ifdef I460GX
  164.     devno_t devno = device_assign_devno();
  165.     inr_t inr;
  166.  
  167. #ifdef CONFIG_NS16550
  168.     inr = NS16550_IRQ;
  169.     (void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL);
  170.     sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
  171.     sysinfo_set_item_val("kbd.port", NULL, (uintptr_t)NS16550_BASE);
  172. #else
  173.     inr = IRQ_KBD;
  174.     (void) i8042_init((i8042_t *)I8042_BASE, devno, inr);
  175.     sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
  176. #endif
  177.     sysinfo_set_item_val("kbd", NULL, true);
  178.     sysinfo_set_item_val("kbd.devno", NULL, devno);
  179.     sysinfo_set_item_val("kbd.inr", NULL, inr);
  180. #endif
  181.  
  182.     sysinfo_set_item_val("ia64_iospace", NULL, true);
  183.     sysinfo_set_item_val("ia64_iospace.address", NULL, true);
  184.     sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
  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 -
  209.         ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  210.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
  211.         (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
  212.  
  213.     while (1)
  214.         ;
  215. }
  216.  
  217. /** Set thread-local-storage pointer.
  218.  *
  219.  * We use r13 (a.k.a. tp) for this purpose.
  220.  */
  221. unative_t sys_tls_set(unative_t addr)
  222. {
  223.         return 0;
  224. }
  225.  
  226. /** Acquire console back for kernel
  227.  *
  228.  */
  229. void arch_grab_console(void)
  230. {
  231. #ifdef SKI
  232.     ski_kbd_grab();
  233. #endif
  234. }
  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.     pio_write_8((ioport8_t *)0x64, 0xfe);
  249.     while (1)
  250.         ;
  251. }
  252.  
  253. /** Construct function pointer
  254.  *
  255.  * @param fptr   function pointer structure
  256.  * @param addr   function address
  257.  * @param caller calling function address
  258.  *
  259.  * @return address of the function pointer
  260.  *
  261.  */
  262. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  263. {
  264.     fptr->fnc = (unative_t) addr;
  265.     fptr->gp = ((unative_t *) caller)[1];
  266.    
  267.     return (void *) fptr;
  268. }
  269.  
  270. /** @}
  271.  */
  272.