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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 <ddi/device.h>
  69. #include <sysinfo/sysinfo.h>
  70. #include <arch/boot/boot.h>
  71.  
  72. #ifdef CONFIG_SMP
  73. #include <arch/smp/apic.h>
  74. #endif
  75.  
  76. /** Perform ia32-specific initialization before main_bsp() is called.
  77.  *
  78.  * @param signature Should contain the multiboot signature.
  79.  * @param mi        Pointer to the multiboot information structure.
  80.  */
  81. void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
  82. {
  83.     /* Parse multiboot information obtained from the bootloader. */
  84.     multiboot_info_parse(signature, mi);   
  85.    
  86. #ifdef CONFIG_SMP
  87.     /* Copy AP bootstrap routines below 1 MB. */
  88.     memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
  89.         (size_t) &_hardcoded_unmapped_size);
  90. #endif
  91. }
  92.  
  93. void arch_pre_mm_init(void)
  94. {
  95.     pm_init();
  96.  
  97.     if (config.cpu_active == 1) {
  98.         interrupt_init();
  99.         bios_init();
  100.        
  101.         /* PIC */
  102.         i8259_init();
  103.     }
  104. }
  105.  
  106. void arch_post_mm_init(void)
  107. {
  108.     if (config.cpu_active == 1) {
  109.         /* Initialize IRQ routing */
  110.         irq_init(IRQ_COUNT, IRQ_COUNT);
  111.        
  112.         /* hard clock */
  113.         i8254_init();
  114.        
  115. #ifdef CONFIG_FB
  116.         if (vesa_present())
  117.             vesa_init();
  118.         else
  119. #endif
  120. #ifdef CONFIG_EGA
  121.             ega_init(EGA_BASE, EGA_VIDEORAM);  /* video */
  122. #else
  123.             {}
  124. #endif
  125.        
  126.         /* Enable debugger */
  127.         debugger_init();
  128.         /* Merge all memory zones to 1 big zone */
  129.         zone_merge_all();
  130.     }
  131. }
  132.  
  133. void arch_post_cpu_init()
  134. {
  135. #ifdef CONFIG_SMP
  136.         if (config.cpu_active > 1) {
  137.         l_apic_init();
  138.         l_apic_debug();
  139.     }
  140. #endif
  141. }
  142.  
  143. void arch_pre_smp_init(void)
  144. {
  145.     if (config.cpu_active == 1) {
  146. #ifdef CONFIG_SMP
  147.         acpi_init();
  148. #endif /* CONFIG_SMP */
  149.     }
  150. }
  151.  
  152. void arch_post_smp_init(void)
  153. {
  154. #ifdef CONFIG_PC_KBD
  155.     devno_t devno = device_assign_devno();
  156.    
  157.     /*
  158.      * Initialize the i8042 controller. Then initialize the keyboard
  159.      * module and connect it to i8042. Enable keyboard interrupts.
  160.      */
  161.     indev_t *kbrdin = i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD);
  162.     if (kbrdin) {
  163.         kbrd_init(kbrdin);
  164.         trap_virtual_enable_irqs(1 << IRQ_KBD);
  165.     }
  166.    
  167.     /*
  168.      * This is the necessary evil until the userspace driver is entirely
  169.      * self-sufficient.
  170.      */
  171.     sysinfo_set_item_val("kbd", NULL, true);
  172.     sysinfo_set_item_val("kbd.devno", NULL, devno);
  173.     sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
  174.     sysinfo_set_item_val("kbd.address.physical", NULL,
  175.         (uintptr_t) I8042_BASE);
  176.     sysinfo_set_item_val("kbd.address.kernel", NULL,
  177.         (uintptr_t) I8042_BASE);
  178. #endif
  179. }
  180.  
  181. void calibrate_delay_loop(void)
  182. {
  183.     i8254_calibrate_delay_loop();
  184.     if (config.cpu_active == 1) {
  185.         /*
  186.          * This has to be done only on UP.
  187.          * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
  188.          */
  189.         i8254_normal_operation();
  190.     }
  191. }
  192.  
  193. /** Set thread-local-storage pointer
  194.  *
  195.  * TLS pointer is set in GS register. That means, the GS contains
  196.  * selector, and the descriptor->base is the correct address.
  197.  */
  198. unative_t sys_tls_set(unative_t addr)
  199. {
  200.     THREAD->arch.tls = addr;
  201.     set_tls_desc(addr);
  202.  
  203.     return 0;
  204. }
  205.  
  206. /** Acquire console back for kernel
  207.  *
  208.  */
  209. void arch_grab_console(void)
  210. {
  211. #ifdef CONFIG_FB
  212.     if (vesa_present())
  213.         vesa_redraw();
  214.     else
  215. #endif
  216. #ifdef CONFIG_EGA
  217.         ega_redraw();
  218. #else
  219.         {}
  220. #endif
  221. }
  222.  
  223. /** Return console to userspace
  224.  *
  225.  */
  226. void arch_release_console(void)
  227. {
  228. }
  229.  
  230. /** Construct function pointer
  231.  *
  232.  * @param fptr   function pointer structure
  233.  * @param addr   function address
  234.  * @param caller calling function address
  235.  *
  236.  * @return address of the function pointer
  237.  *
  238.  */
  239. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  240. {
  241.     return addr;
  242. }
  243.  
  244. /** @}
  245.  */
  246.