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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+LAGACY_INTERRUPT_BASE)
  67. #define NS16550_PORT 0x3f8
  68.  
  69. bootinfo_t *bootinfo;
  70.  
  71. static uint64_t iosapic_base=0xfec00000;
  72.  
  73. void arch_pre_main(void)
  74. {
  75.     /* Setup usermode init tasks. */
  76.  
  77. //#ifdef I460GX
  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 = ((unsigned long) bootinfo->taskmap.tasks[i].addr) | VRN_MASK;
  84.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  85.     }
  86. /*
  87. #else  
  88.     init.cnt = 8;
  89.     init.tasks[0].addr = INIT0_ADDRESS;
  90.     init.tasks[0].size = INIT0_SIZE;
  91.     init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
  92.     init.tasks[1].size = INIT0_SIZE;
  93.     init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
  94.     init.tasks[2].size = INIT0_SIZE;
  95.     init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
  96.     init.tasks[3].size = INIT0_SIZE;
  97.     init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
  98.     init.tasks[4].size = INIT0_SIZE;
  99.     init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
  100.     init.tasks[5].size = INIT0_SIZE;
  101.     init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
  102.     init.tasks[6].size = INIT0_SIZE;
  103.     init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
  104.     init.tasks[7].size = INIT0_SIZE;
  105. #endif*/
  106. }
  107.  
  108. void arch_pre_mm_init(void)
  109. {
  110.     /* Set Interruption Vector Address (i.e. location of interruption vector table). */
  111.     iva_write((uintptr_t) &ivt);
  112.     srlz_d();
  113.    
  114. }
  115.  
  116. static void iosapic_init(void)
  117. {
  118.  
  119.     uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base))|FW_OFFSET;
  120.     int i;
  121.    
  122.    
  123.     for(i=0;i<16;i++)
  124.     {
  125.    
  126.         if(i==2) continue;   //Disable Cascade interrupt
  127.         ((uint32_t*)(IOSAPIC+0x00))[0]=0x10+2*i;
  128.         srlz_d();
  129.         ((uint32_t*)(IOSAPIC+0x10))[0]=LAGACY_INTERRUPT_BASE+i;
  130.         srlz_d();
  131.         ((uint32_t*)(IOSAPIC+0x00))[0]=0x10+2*i+1;
  132.         srlz_d();
  133.         ((uint32_t*)(IOSAPIC+0x10))[0]=1<<(56-32);
  134.         srlz_d();
  135.     }
  136.  
  137. }
  138.  
  139.  
  140. void arch_post_mm_init(void)
  141. {
  142.     if(config.cpu_active==1)
  143.     {
  144.         iosapic_init();
  145.    
  146.         irq_init(INR_COUNT, INR_COUNT);
  147. #ifdef SKI
  148.         ski_init_console();
  149. #else  
  150.         ega_init();
  151. #endif 
  152.     }
  153.     it_init();
  154.        
  155. }
  156.  
  157. void arch_post_cpu_init(void)
  158. {
  159. }
  160.  
  161. void arch_pre_smp_init(void)
  162. {
  163. }
  164.  
  165.  
  166. #ifdef I460GX
  167. #define POLL_INTERVAL       50000       /* 50 ms */
  168. /** Kernel thread for polling keyboard. */
  169. static void i8042_kkbdpoll(void *arg)
  170. {
  171.     while (1) {
  172.         i8042_poll();
  173. #ifdef CONFIG_NS16550
  174.     #ifndef CONFIG_NS16550_INTERRUPT_DRIVEN
  175.         ns16550_poll();
  176.     #endif 
  177. #endif
  178.         thread_usleep(POLL_INTERVAL);
  179.     }
  180. }
  181. #endif
  182.  
  183.  
  184. static void end_of_irq_void(void *cir_arg __attribute__((unused)),inr_t inr __attribute__((unused)))
  185. {
  186.     return;
  187. }
  188.  
  189.  
  190. void arch_post_smp_init(void)
  191. {
  192.  
  193.     {
  194.         /*
  195.          * Create thread that polls keyboard.
  196.          */
  197. #ifdef SKI
  198.         thread_t *t;
  199.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  200.         if (!t)
  201.             panic("cannot create kkbdpoll\n");
  202.         thread_ready(t);
  203. #endif     
  204.  
  205. #ifdef I460GX
  206.         devno_t kbd = device_assign_devno();
  207.         devno_t mouse = device_assign_devno();
  208.         /* keyboard controller */
  209.         i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
  210.  
  211. #ifdef CONFIG_NS16550
  212.         ns16550_init(kbd, NS16550_IRQ, NS16550_PORT,end_of_irq_void,NULL); // as a COM 1
  213. #else
  214. #endif
  215.         thread_t *t;
  216.         t = thread_create(i8042_kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  217.         if (!t)
  218.             panic("cannot create kkbdpoll\n");
  219.         thread_ready(t);
  220.  
  221. #endif
  222.  
  223.     }
  224.    
  225.     sysinfo_set_item_val("ia64_iospace", NULL, true);
  226.     sysinfo_set_item_val("ia64_iospace.address", NULL, true);
  227.     sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
  228.  
  229.  
  230.  
  231.  
  232.  
  233. }
  234.  
  235.  
  236. /** Enter userspace and never return. */
  237. void userspace(uspace_arg_t *kernel_uarg)
  238. {
  239.     psr_t psr;
  240.     rsc_t rsc;
  241.  
  242.     psr.value = psr_read();
  243.     psr.cpl = PL_USER;
  244.     psr.i = true;               /* start with interrupts enabled */
  245.     psr.ic = true;
  246.     psr.ri = 0;             /* start with instruction #0 */
  247.     psr.bn = 1;             /* start in bank 0 */
  248.  
  249.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  250.     rsc.loadrs = 0;
  251.     rsc.be = false;
  252.     rsc.pl = PL_USER;
  253.     rsc.mode = 3;               /* eager mode */
  254.  
  255.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  256.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  257.                 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
  258.                 (uintptr_t) kernel_uarg->uspace_uarg,
  259.                 psr.value, rsc.value);
  260.  
  261.     while (1) {
  262.         ;
  263.     }
  264. }
  265.  
  266. /** Set thread-local-storage pointer.
  267.  *
  268.  * We use r13 (a.k.a. tp) for this purpose.
  269.  */
  270. unative_t sys_tls_set(unative_t addr)
  271. {
  272.         return 0;
  273. }
  274.  
  275. /** Acquire console back for kernel
  276.  *
  277.  */
  278. void arch_grab_console(void)
  279. {
  280. #ifdef SKI
  281.     ski_kbd_grab();
  282. #else
  283.     i8042_grab();
  284.     #ifdef CONFIG_NS16550
  285.         ns16550_grab();
  286.     #endif 
  287.        
  288. #endif 
  289. }
  290. /** Return console to userspace
  291.  *
  292.  */
  293. void arch_release_console(void)
  294. {
  295. #ifdef SKI
  296.     ski_kbd_release();
  297.     i8042_release();
  298. #else  
  299.     #ifdef CONFIG_NS16550
  300.         ns16550_release();
  301.     #endif 
  302.  
  303. #endif
  304. }
  305.  
  306. void arch_reboot(void)
  307. {
  308.     outb(0x64,0xfe);
  309.     while (1);
  310. }
  311.  
  312. /** @}
  313.  */
  314.