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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.     i8042_instance_t *i8042_instance = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
  159.     if (i8042_instance) {
  160.         kbrd_instance_t *kbrd_instance = kbrd_init();
  161.         if (kbrd_instance) {
  162.             indev_t *sink = stdin_wire();
  163.             indev_t *kbrd = kbrd_wire(kbrd_instance, sink);
  164.             i8042_wire(i8042_instance, kbrd);
  165.             trap_virtual_enable_irqs(1 << IRQ_KBD);
  166.         }
  167.     }
  168.    
  169.     /*
  170.      * This is the necessary evil until the userspace driver is entirely
  171.      * self-sufficient.
  172.      */
  173.     sysinfo_set_item_val("kbd", NULL, true);
  174.     sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
  175.     sysinfo_set_item_val("kbd.address.physical", NULL,
  176.         (uintptr_t) I8042_BASE);
  177.     sysinfo_set_item_val("kbd.address.kernel", NULL,
  178.         (uintptr_t) I8042_BASE);
  179. #endif
  180. }
  181.  
  182. void calibrate_delay_loop(void)
  183. {
  184.     i8254_calibrate_delay_loop();
  185.     if (config.cpu_active == 1) {
  186.         /*
  187.          * This has to be done only on UP.
  188.          * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
  189.          */
  190.         i8254_normal_operation();
  191.     }
  192. }
  193.  
  194. /** Set thread-local-storage pointer
  195.  *
  196.  * TLS pointer is set in GS register. That means, the GS contains
  197.  * selector, and the descriptor->base is the correct address.
  198.  */
  199. unative_t sys_tls_set(unative_t addr)
  200. {
  201.     THREAD->arch.tls = addr;
  202.     set_tls_desc(addr);
  203.  
  204.     return 0;
  205. }
  206.  
  207. /** Acquire console back for kernel
  208.  *
  209.  */
  210. void arch_grab_console(void)
  211. {
  212. #ifdef CONFIG_FB
  213.     if (vesa_present())
  214.         vesa_redraw();
  215.     else
  216. #endif
  217. #ifdef CONFIG_EGA
  218.         ega_redraw();
  219. #else
  220.         {}
  221. #endif
  222. }
  223.  
  224. /** Return console to userspace
  225.  *
  226.  */
  227. void arch_release_console(void)
  228. {
  229. }
  230.  
  231. /** Construct function pointer
  232.  *
  233.  * @param fptr   function pointer structure
  234.  * @param addr   function address
  235.  * @param caller calling function address
  236.  *
  237.  * @return address of the function pointer
  238.  *
  239.  */
  240. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  241. {
  242.     return addr;
  243. }
  244.  
  245. void arch_reboot(void)
  246. {
  247. #ifdef CONFIG_PC_KBD
  248.     i8042_cpu_reset((i8042_t *) I8042_BASE);
  249. #endif
  250. }
  251.  
  252. /** @}
  253.  */
  254.