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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 sparc64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch.h>
  36. #include <debug.h>
  37. #include <config.h>
  38. #include <arch/trap/trap.h>
  39. #include <arch/console.h>
  40. #include <proc/thread.h>
  41. #include <console/console.h>
  42. #include <arch/boot/boot.h>
  43. #include <arch/arch.h>
  44. #include <arch/asm.h>
  45. #include <arch/mm/page.h>
  46. #include <arch/stack.h>
  47. #include <genarch/ofw/ofw_tree.h>
  48. #include <userspace.h>
  49. #include <ddi/irq.h>
  50.  
  51. bootinfo_t bootinfo;
  52.  
  53. /** Perform sparc64-specific initialization before main_bsp() is called. */
  54. void arch_pre_main(void)
  55. {
  56.     /* Copy init task info. */
  57.     init.cnt = bootinfo.taskmap.count;
  58.    
  59.     uint32_t i;
  60.  
  61.     for (i = 0; i < bootinfo.taskmap.count; i++) {
  62.         init.tasks[i].addr = (uintptr_t) bootinfo.taskmap.tasks[i].addr;
  63.         init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
  64.     }
  65.    
  66.     /* Copy boot allocations info. */
  67.     ballocs.base = bootinfo.ballocs.base;
  68.     ballocs.size = bootinfo.ballocs.size;
  69.    
  70.     ofw_tree_init(bootinfo.ofw_root);
  71. }
  72.  
  73. /** Perform sparc64 specific initialization before mm is initialized. */
  74. void arch_pre_mm_init(void)
  75. {
  76.     if (config.cpu_active == 1)
  77.         trap_init();
  78. }
  79.  
  80. /** Perform sparc64 specific initialization afterr mm is initialized. */
  81. void arch_post_mm_init(void)
  82. {
  83.     if (config.cpu_active == 1) {
  84.         /*
  85.          * We have 2^11 different interrupt vectors.
  86.          * But we only create 128 buckets.
  87.          */
  88.         irq_init(1 << 11, 128);
  89.  
  90.         standalone_sparc64_console_init();
  91.     }
  92. }
  93.  
  94. void arch_post_cpu_init(void)
  95. {
  96. }
  97.  
  98. void arch_pre_smp_init(void)
  99. {
  100. }
  101.  
  102. void arch_post_smp_init(void)
  103. {
  104.     static thread_t *t = NULL;
  105.  
  106.     if (!t) {
  107.         /*
  108.              * Create thread that polls keyboard.
  109.              */
  110.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  111.         if (!t)
  112.             panic("Cannot create kkbdpoll.");
  113.         thread_ready(t);
  114.     }
  115. }
  116.  
  117. /** Calibrate delay loop.
  118.  *
  119.  * On sparc64, we implement delay() by waiting for the TICK register to
  120.  * reach a pre-computed value, as opposed to performing some pre-computed
  121.  * amount of instructions of known duration. We set the delay_loop_const
  122.  * to 1 in order to neutralize the multiplication done by delay().
  123.  */
  124. void calibrate_delay_loop(void)
  125. {
  126.     CPU->delay_loop_const = 1;
  127. }
  128.  
  129. /** Wait several microseconds.
  130.  *
  131.  * We assume that interrupts are already disabled.
  132.  *
  133.  * @param t Microseconds to wait.
  134.  */
  135. void asm_delay_loop(const uint32_t usec)
  136. {
  137.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
  138.         CPU->arch.clock_frequency / 1000000;
  139.  
  140.     while (tick_read() < stop)
  141.         ;
  142. }
  143.  
  144. /** Switch to userspace. */
  145. void userspace(uspace_arg_t *kernel_uarg)
  146. {
  147.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  148.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  149.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  150.         (uintptr_t) kernel_uarg->uspace_uarg);
  151.  
  152.     for (;;)
  153.         ;
  154.     /* not reached */
  155. }
  156.  
  157. void arch_reboot(void)
  158. {
  159.     // TODO
  160.     while (1);
  161. }
  162.  
  163. /** Construct function pointer
  164.  *
  165.  * @param fptr   function pointer structure
  166.  * @param addr   function address
  167.  * @param caller calling function address
  168.  *
  169.  * @return address of the function pointer
  170.  *
  171.  */
  172. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  173. {
  174.     return addr;
  175. }
  176.  
  177. /** @}
  178.  */
  179.