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  1. /*
  2.  * Copyright (c) 2001-2004 Jakub Jermar
  3.  * Copyright (c) 2009 Jiri Svoboda
  4.  * Copyright (c) 2009 Martin Decky
  5.  * All rights reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  10.  *
  11.  * - Redistributions of source code must retain the above copyright
  12.  *   notice, this list of conditions and the following disclaimer.
  13.  * - Redistributions in binary form must reproduce the above copyright
  14.  *   notice, this list of conditions and the following disclaimer in the
  15.  *   documentation and/or other materials provided with the distribution.
  16.  * - The name of the author may not be used to endorse or promote products
  17.  *   derived from this software without specific prior written permission.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. /** @addtogroup ia32
  32.  * @{
  33.  */
  34. /** @file
  35.  */
  36.  
  37. #include <arch.h>
  38.  
  39. #include <arch/types.h>
  40.  
  41. #include <arch/pm.h>
  42.  
  43. #include <genarch/multiboot/multiboot.h>
  44. #include <genarch/drivers/legacy/ia32/io.h>
  45. #include <genarch/drivers/ega/ega.h>
  46. #include <arch/drivers/vesa.h>
  47. #include <genarch/drivers/i8042/i8042.h>
  48. #include <genarch/kbrd/kbrd.h>
  49. #include <arch/drivers/i8254.h>
  50. #include <arch/drivers/i8259.h>
  51.  
  52. #include <arch/context.h>
  53.  
  54. #include <config.h>
  55.  
  56. #include <arch/interrupt.h>
  57. #include <arch/asm.h>
  58. #include <genarch/acpi/acpi.h>
  59.  
  60. #include <arch/bios/bios.h>
  61.  
  62. #include <interrupt.h>
  63. #include <ddi/irq.h>
  64. #include <arch/debugger.h>
  65. #include <proc/thread.h>
  66. #include <syscall/syscall.h>
  67. #include <console/console.h>
  68. #include <sysinfo/sysinfo.h>
  69. #include <arch/boot/boot.h>
  70.  
  71. #ifdef CONFIG_SMP
  72. #include <arch/smp/apic.h>
  73. #endif
  74.  
  75. /** Perform ia32-specific initialization before main_bsp() is called.
  76.  *
  77.  * @param signature Should contain the multiboot signature.
  78.  * @param mi        Pointer to the multiboot information structure.
  79.  */
  80. void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
  81. {
  82.     /* Parse multiboot information obtained from the bootloader. */
  83.     multiboot_info_parse(signature, mi);   
  84.    
  85. #ifdef CONFIG_SMP
  86.     /* Copy AP bootstrap routines below 1 MB. */
  87.     memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
  88.         (size_t) &_hardcoded_unmapped_size);
  89. #endif
  90. }
  91.  
  92. void arch_pre_mm_init(void)
  93. {
  94.     pm_init();
  95.  
  96.     if (config.cpu_active == 1) {
  97.         interrupt_init();
  98.         bios_init();
  99.        
  100.         /* PIC */
  101.         i8259_init();
  102.     }
  103. }
  104.  
  105. void arch_post_mm_init(void)
  106. {
  107.     if (config.cpu_active == 1) {
  108.         /* Initialize IRQ routing */
  109.         irq_init(IRQ_COUNT, IRQ_COUNT);
  110.        
  111.         /* hard clock */
  112.         i8254_init();
  113.        
  114. #ifdef CONFIG_FB
  115.         if (vesa_present())
  116.             vesa_init();
  117.         else
  118. #endif
  119. #ifdef CONFIG_EGA
  120.             ega_init(EGA_BASE, EGA_VIDEORAM);  /* video */
  121. #else
  122.             {}
  123. #endif
  124.        
  125.         /* Enable debugger */
  126.         debugger_init();
  127.         /* Merge all memory zones to 1 big zone */
  128.         zone_merge_all();
  129.     }
  130. }
  131.  
  132. void arch_post_cpu_init()
  133. {
  134. #ifdef CONFIG_SMP
  135.         if (config.cpu_active > 1) {
  136.         l_apic_init();
  137.         l_apic_debug();
  138.     }
  139. #endif
  140. }
  141.  
  142. void arch_pre_smp_init(void)
  143. {
  144.     if (config.cpu_active == 1) {
  145. #ifdef CONFIG_SMP
  146.         acpi_init();
  147. #endif /* CONFIG_SMP */
  148.     }
  149. }
  150.  
  151. void arch_post_smp_init(void)
  152. {
  153. #ifdef CONFIG_PC_KBD
  154.     /*
  155.      * Initialize the i8042 controller. Then initialize the keyboard
  156.      * module and connect it to i8042. Enable keyboard interrupts.
  157.      */
  158.     indev_t *kbrdin = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
  159.     if (kbrdin) {
  160.         kbrd_init(kbrdin);
  161.         trap_virtual_enable_irqs(1 << IRQ_KBD);
  162.     }
  163.    
  164.     /*
  165.      * This is the necessary evil until the userspace driver is entirely
  166.      * self-sufficient.
  167.      */
  168.     sysinfo_set_item_val("kbd", NULL, true);
  169.     sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
  170.     sysinfo_set_item_val("kbd.address.physical", NULL,
  171.         (uintptr_t) I8042_BASE);
  172.     sysinfo_set_item_val("kbd.address.kernel", NULL,
  173.         (uintptr_t) I8042_BASE);
  174. #endif
  175. }
  176.  
  177. void calibrate_delay_loop(void)
  178. {
  179.     i8254_calibrate_delay_loop();
  180.     if (config.cpu_active == 1) {
  181.         /*
  182.          * This has to be done only on UP.
  183.          * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
  184.          */
  185.         i8254_normal_operation();
  186.     }
  187. }
  188.  
  189. /** Set thread-local-storage pointer
  190.  *
  191.  * TLS pointer is set in GS register. That means, the GS contains
  192.  * selector, and the descriptor->base is the correct address.
  193.  */
  194. unative_t sys_tls_set(unative_t addr)
  195. {
  196.     THREAD->arch.tls = addr;
  197.     set_tls_desc(addr);
  198.  
  199.     return 0;
  200. }
  201.  
  202. /** Acquire console back for kernel
  203.  *
  204.  */
  205. void arch_grab_console(void)
  206. {
  207. #ifdef CONFIG_FB
  208.     if (vesa_present())
  209.         vesa_redraw();
  210.     else
  211. #endif
  212. #ifdef CONFIG_EGA
  213.         ega_redraw();
  214. #else
  215.         {}
  216. #endif
  217. }
  218.  
  219. /** Return console to userspace
  220.  *
  221.  */
  222. void arch_release_console(void)
  223. {
  224. }
  225.  
  226. /** Construct function pointer
  227.  *
  228.  * @param fptr   function pointer structure
  229.  * @param addr   function address
  230.  * @param caller calling function address
  231.  *
  232.  * @return address of the function pointer
  233.  *
  234.  */
  235. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  236. {
  237.     return addr;
  238. }
  239.  
  240. void arch_reboot(void)
  241. {
  242. #ifdef CONFIG_PC_KBD
  243.     i8042_cpu_reset((i8042_t *) I8042_BASE);
  244. #endif
  245. }
  246.  
  247. /** @}
  248.  */
  249.