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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. #include <string.h>
  66.  
  67. /* NS16550 as a COM 1 */
  68. #define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
  69.  
  70. bootinfo_t *bootinfo;
  71.  
  72. static uint64_t iosapic_base = 0xfec00000;
  73.  
  74. /** Performs ia64-specific initialization before main_bsp() is called. */
  75. void arch_pre_main(void)
  76. {
  77.     /* Setup usermode init tasks. */
  78.  
  79.     unsigned int i;
  80.    
  81.     init.cnt = bootinfo->taskmap.count;
  82.    
  83.     for (i = 0; i < init.cnt; i++) {
  84.         init.tasks[i].addr =
  85.             ((unsigned long) bootinfo->taskmap.tasks[i].addr) |
  86.             VRN_MASK;
  87.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  88.         strncpy(init.tasks[i].name, bootinfo->taskmap.tasks[i].name,
  89.             CONFIG_TASK_NAME_BUFLEN);
  90.     }
  91. }
  92.  
  93. void arch_pre_mm_init(void)
  94. {
  95.     /*
  96.      * Set Interruption Vector Address (i.e. location of interruption vector
  97.      * table).
  98.      */
  99.     iva_write((uintptr_t) &ivt);
  100.     srlz_d();
  101.    
  102. }
  103.  
  104. static void iosapic_init(void)
  105. {
  106.     uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
  107.     int i;
  108.    
  109.     int myid, myeid;
  110.    
  111.     myid = ia64_get_cpu_id();
  112.     myeid = ia64_get_cpu_eid();
  113.  
  114.     for (i = 0; i < 16; i++) {
  115.         if (i == 2)
  116.             continue;    /* Disable Cascade interrupt */
  117.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
  118.         srlz_d();
  119.         ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
  120.         srlz_d();
  121.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
  122.         srlz_d();
  123.         ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
  124.             myeid << (48 - 32);
  125.         srlz_d();
  126.     }
  127.  
  128. }
  129.  
  130.  
  131. void arch_post_mm_init(void)
  132. {
  133.     if (config.cpu_active == 1) {
  134.         iosapic_init();
  135.         irq_init(INR_COUNT, INR_COUNT);
  136. #ifdef SKI
  137.         ski_init_console();
  138. #else
  139.         ega_init(EGA_BASE, EGA_VIDEORAM);
  140. #endif
  141.     }
  142.     it_init();
  143.        
  144. }
  145.  
  146. void arch_post_cpu_init(void)
  147. {
  148. }
  149.  
  150. void arch_pre_smp_init(void)
  151. {
  152. }
  153.  
  154. void arch_post_smp_init(void)
  155. {
  156.     /*
  157.      * Create thread that polls keyboard.
  158.      */
  159. #ifdef SKI
  160.     thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  161.     if (!t)
  162.         panic("Cannot create kkbdpoll.");
  163.     thread_ready(t);
  164. #endif     
  165.  
  166. #ifdef I460GX
  167.     devno_t devno = device_assign_devno();
  168.     inr_t inr;
  169.  
  170. #ifdef CONFIG_NS16550
  171.     inr = NS16550_IRQ;
  172.     (void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL);
  173.     sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
  174.     sysinfo_set_item_val("kbd.address.physical", NULL,
  175.         (uintptr_t) NS16550_BASE);
  176.     sysinfo_set_item_val("kbd.address.kernel", NULL,
  177.         (uintptr_t) NS16550_BASE);
  178. #else
  179.     inr = IRQ_KBD;
  180.     (void) i8042_init((i8042_t *)I8042_BASE, devno, inr);
  181.     sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
  182.     sysinfo_set_item_val("kbd.address.physical", NULL,
  183.         (uintptr_t) I8042_BASE);
  184.     sysinfo_set_item_val("kbd.address.kernel", NULL,
  185.         (uintptr_t) I8042_BASE);
  186. #endif
  187.     sysinfo_set_item_val("kbd", NULL, true);
  188.     sysinfo_set_item_val("kbd.devno", NULL, devno);
  189.     sysinfo_set_item_val("kbd.inr", NULL, inr);
  190. #endif
  191.  
  192.     sysinfo_set_item_val("ia64_iospace", NULL, true);
  193.     sysinfo_set_item_val("ia64_iospace.address", NULL, true);
  194.     sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
  195. }
  196.  
  197.  
  198. /** Enter userspace and never return. */
  199. void userspace(uspace_arg_t *kernel_uarg)
  200. {
  201.     psr_t psr;
  202.     rsc_t rsc;
  203.  
  204.     psr.value = psr_read();
  205.     psr.cpl = PL_USER;
  206.     psr.i = true;           /* start with interrupts enabled */
  207.     psr.ic = true;
  208.     psr.ri = 0;         /* start with instruction #0 */
  209.     psr.bn = 1;         /* start in bank 0 */
  210.  
  211.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  212.     rsc.loadrs = 0;
  213.     rsc.be = false;
  214.     rsc.pl = PL_USER;
  215.     rsc.mode = 3;           /* eager mode */
  216.  
  217.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  218.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
  219.         ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  220.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
  221.         (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
  222.  
  223.     while (1)
  224.         ;
  225. }
  226.  
  227. /** Set thread-local-storage pointer.
  228.  *
  229.  * We use r13 (a.k.a. tp) for this purpose.
  230.  */
  231. unative_t sys_tls_set(unative_t addr)
  232. {
  233.         return 0;
  234. }
  235.  
  236. /** Acquire console back for kernel
  237.  *
  238.  */
  239. void arch_grab_console(void)
  240. {
  241. #ifdef SKI
  242.     ski_kbd_grab();
  243. #endif
  244. }
  245.  
  246. /** Return console to userspace
  247.  *
  248.  */
  249. void arch_release_console(void)
  250. {
  251. #ifdef SKI
  252.     ski_kbd_release();
  253. #endif
  254. }
  255.  
  256. void arch_reboot(void)
  257. {
  258.     pio_write_8((ioport8_t *)0x64, 0xfe);
  259.     while (1)
  260.         ;
  261. }
  262.  
  263. /** Construct function pointer
  264.  *
  265.  * @param fptr   function pointer structure
  266.  * @param addr   function address
  267.  * @param caller calling function address
  268.  *
  269.  * @return address of the function pointer
  270.  *
  271.  */
  272. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  273. {
  274.     fptr->fnc = (unative_t) addr;
  275.     fptr->gp = ((unative_t *) caller)[1];
  276.    
  277.     return (void *) fptr;
  278. }
  279.  
  280. /** @}
  281.  */
  282.