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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/kbrd/kbrd.h>
  58. #include <genarch/srln/srln.h>
  59. #include <genarch/drivers/i8042/i8042.h>
  60. #include <genarch/drivers/ns16550/ns16550.h>
  61. #include <arch/drivers/kbd.h>
  62. #include <smp/smp.h>
  63. #include <smp/ipi.h>
  64. #include <arch/atomic.h>
  65. #include <panic.h>
  66. #include <print.h>
  67. #include <sysinfo/sysinfo.h>
  68. #include <string.h>
  69.  
  70. /* NS16550 as a COM 1 */
  71. #define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
  72.  
  73. bootinfo_t *bootinfo;
  74.  
  75. static uint64_t iosapic_base = 0xfec00000;
  76.  
  77. /** Performs ia64-specific initialization before main_bsp() is called. */
  78. void arch_pre_main(void)
  79. {
  80.     /* Setup usermode init tasks. */
  81.  
  82.     unsigned int i;
  83.    
  84.     init.cnt = bootinfo->taskmap.count;
  85.    
  86.     for (i = 0; i < init.cnt; i++) {
  87.         init.tasks[i].addr =
  88.             ((unsigned long) bootinfo->taskmap.tasks[i].addr) |
  89.             VRN_MASK;
  90.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  91.         strncpy(init.tasks[i].name, bootinfo->taskmap.tasks[i].name,
  92.             CONFIG_TASK_NAME_BUFLEN);
  93.     }
  94. }
  95.  
  96. void arch_pre_mm_init(void)
  97. {
  98.     /*
  99.      * Set Interruption Vector Address (i.e. location of interruption vector
  100.      * table).
  101.      */
  102.     iva_write((uintptr_t) &ivt);
  103.     srlz_d();
  104.    
  105. }
  106.  
  107. static void iosapic_init(void)
  108. {
  109.     uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
  110.     int i;
  111.    
  112.     int myid, myeid;
  113.    
  114.     myid = ia64_get_cpu_id();
  115.     myeid = ia64_get_cpu_eid();
  116.  
  117.     for (i = 0; i < 16; i++) {
  118.         if (i == 2)
  119.             continue;    /* Disable Cascade interrupt */
  120.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
  121.         srlz_d();
  122.         ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
  123.         srlz_d();
  124.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
  125.         srlz_d();
  126.         ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
  127.             myeid << (48 - 32);
  128.         srlz_d();
  129.     }
  130.  
  131. }
  132.  
  133.  
  134. void arch_post_mm_init(void)
  135. {
  136.     if (config.cpu_active == 1) {
  137.         iosapic_init();
  138.         irq_init(INR_COUNT, INR_COUNT);
  139. #ifdef SKI
  140.         ski_init_console();
  141. #else
  142.         ega_init(EGA_BASE, EGA_VIDEORAM);
  143. #endif
  144.     }
  145.     it_init();
  146.        
  147. }
  148.  
  149. void arch_post_cpu_init(void)
  150. {
  151. }
  152.  
  153. void arch_pre_smp_init(void)
  154. {
  155. }
  156.  
  157. void arch_post_smp_init(void)
  158. {
  159.     /*
  160.      * Create thread that polls keyboard.
  161.      */
  162. #ifdef SKI
  163.     thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  164.     if (!t)
  165.         panic("Cannot create kkbdpoll.");
  166.     thread_ready(t);
  167. #endif     
  168.  
  169. #ifdef I460GX
  170.     devno_t devno = device_assign_devno();
  171.     inr_t inr;
  172.  
  173. #ifdef CONFIG_NS16550
  174.     inr = NS16550_IRQ;
  175.     srln_init(stdin);
  176.     (void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL,
  177.         &srlnin);
  178.     sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
  179.     sysinfo_set_item_val("kbd.address.physical", NULL,
  180.         (uintptr_t) NS16550_BASE);
  181.     sysinfo_set_item_val("kbd.address.kernel", NULL,
  182.         (uintptr_t) NS16550_BASE);
  183. #else
  184.     inr = IRQ_KBD;
  185.     kbrd_init(stdin);
  186.     (void) i8042_init((i8042_t *)I8042_BASE, devno, inr, &kbrdin);
  187.     trap_virtual_enable_irqs(1 << inr);
  188.     sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
  189.     sysinfo_set_item_val("kbd.address.physical", NULL,
  190.         (uintptr_t) I8042_BASE);
  191.     sysinfo_set_item_val("kbd.address.kernel", NULL,
  192.         (uintptr_t) I8042_BASE);
  193. #endif
  194.     sysinfo_set_item_val("kbd", NULL, true);
  195.     sysinfo_set_item_val("kbd.devno", NULL, devno);
  196.     sysinfo_set_item_val("kbd.inr", NULL, inr);
  197. #endif
  198.  
  199.     sysinfo_set_item_val("ia64_iospace", NULL, true);
  200.     sysinfo_set_item_val("ia64_iospace.address", NULL, true);
  201.     sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
  202. }
  203.  
  204.  
  205. /** Enter userspace and never return. */
  206. void userspace(uspace_arg_t *kernel_uarg)
  207. {
  208.     psr_t psr;
  209.     rsc_t rsc;
  210.  
  211.     psr.value = psr_read();
  212.     psr.cpl = PL_USER;
  213.     psr.i = true;           /* start with interrupts enabled */
  214.     psr.ic = true;
  215.     psr.ri = 0;         /* start with instruction #0 */
  216.     psr.bn = 1;         /* start in bank 0 */
  217.  
  218.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  219.     rsc.loadrs = 0;
  220.     rsc.be = false;
  221.     rsc.pl = PL_USER;
  222.     rsc.mode = 3;           /* eager mode */
  223.  
  224.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  225.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
  226.         ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  227.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
  228.         (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
  229.  
  230.     while (1)
  231.         ;
  232. }
  233.  
  234. /** Set thread-local-storage pointer.
  235.  *
  236.  * We use r13 (a.k.a. tp) for this purpose.
  237.  */
  238. unative_t sys_tls_set(unative_t addr)
  239. {
  240.         return 0;
  241. }
  242.  
  243. /** Acquire console back for kernel
  244.  *
  245.  */
  246. void arch_grab_console(void)
  247. {
  248. #ifdef SKI
  249.     ski_kbd_grab();
  250. #endif
  251. }
  252.  
  253. /** Return console to userspace
  254.  *
  255.  */
  256. void arch_release_console(void)
  257. {
  258. #ifdef SKI
  259.     ski_kbd_release();
  260. #endif
  261. }
  262.  
  263. void arch_reboot(void)
  264. {
  265.     pio_write_8((ioport8_t *)0x64, 0xfe);
  266.     while (1)
  267.         ;
  268. }
  269.  
  270. /** Construct function pointer
  271.  *
  272.  * @param fptr   function pointer structure
  273.  * @param addr   function address
  274.  * @param caller calling function address
  275.  *
  276.  * @return address of the function pointer
  277.  *
  278.  */
  279. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  280. {
  281.     fptr->fnc = (unative_t) addr;
  282.     fptr->gp = ((unative_t *) caller)[1];
  283.    
  284.     return (void *) fptr;
  285. }
  286.  
  287. /** @}
  288.  */
  289.