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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 <arch/drivers/ega.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. #define NS16550_PORT    0x3f8
  69.  
  70. bootinfo_t *bootinfo;
  71.  
  72. static uint64_t iosapic_base = 0xfec00000;
  73.  
  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 kbd = device_assign_devno();
  165.  
  166. #ifdef CONFIG_NS16550
  167.     ns16550_init(kbd, NS16550_PORT, NS16550_IRQ, NULL, NULL);
  168. #else
  169.     devno_t mouse = device_assign_devno();
  170.     i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
  171. #endif
  172. #endif
  173.  
  174.     sysinfo_set_item_val("ia64_iospace", NULL, true);
  175.     sysinfo_set_item_val("ia64_iospace.address", NULL, true);
  176.     sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
  177. }
  178.  
  179.  
  180. /** Enter userspace and never return. */
  181. void userspace(uspace_arg_t *kernel_uarg)
  182. {
  183.     psr_t psr;
  184.     rsc_t rsc;
  185.  
  186.     psr.value = psr_read();
  187.     psr.cpl = PL_USER;
  188.     psr.i = true;           /* start with interrupts enabled */
  189.     psr.ic = true;
  190.     psr.ri = 0;         /* start with instruction #0 */
  191.     psr.bn = 1;         /* start in bank 0 */
  192.  
  193.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  194.     rsc.loadrs = 0;
  195.     rsc.be = false;
  196.     rsc.pl = PL_USER;
  197.     rsc.mode = 3;           /* eager mode */
  198.  
  199.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  200.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
  201.         ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  202.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
  203.         (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
  204.  
  205.     while (1)
  206.         ;
  207. }
  208.  
  209. /** Set thread-local-storage pointer.
  210.  *
  211.  * We use r13 (a.k.a. tp) for this purpose.
  212.  */
  213. unative_t sys_tls_set(unative_t addr)
  214. {
  215.         return 0;
  216. }
  217.  
  218. /** Acquire console back for kernel
  219.  *
  220.  */
  221. void arch_grab_console(void)
  222. {
  223. #ifdef SKI
  224.     ski_kbd_grab();
  225. #else
  226. #ifdef CONFIG_NS16550
  227.     ns16550_grab();
  228. #else
  229.     i8042_grab();
  230. #endif
  231. #endif
  232. }
  233.  
  234. /** Return console to userspace
  235.  *
  236.  */
  237. void arch_release_console(void)
  238. {
  239. #ifdef SKI
  240.     ski_kbd_release();
  241. #else
  242. #ifdef CONFIG_NS16550
  243.     ns16550_release();
  244. #else
  245.     i8042_release();
  246. #endif
  247. #endif
  248. }
  249.  
  250. void arch_reboot(void)
  251. {
  252.     pio_write_8(0x64, 0xfe);
  253.     while (1)
  254.         ;
  255. }
  256.  
  257. /** Construct function pointer
  258.  *
  259.  * @param fptr   function pointer structure
  260.  * @param addr   function address
  261.  * @param caller calling function address
  262.  *
  263.  * @return address of the function pointer
  264.  *
  265.  */
  266. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  267. {
  268.     fptr->fnc = (unative_t) addr;
  269.     fptr->gp = ((unative_t *) caller)[1];
  270.    
  271.     return (void *) fptr;
  272. }
  273.  
  274. /** @}
  275.  */
  276.