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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. #include <string.h>
  51.  
  52. bootinfo_t bootinfo;
  53.  
  54. /** Perform sparc64-specific initialization before main_bsp() is called. */
  55. void arch_pre_main(void)
  56. {
  57.     /* Copy init task info. */
  58.     init.cnt = bootinfo.taskmap.count;
  59.    
  60.     uint32_t i;
  61.  
  62.     for (i = 0; i < bootinfo.taskmap.count; i++) {
  63.         init.tasks[i].addr = (uintptr_t) bootinfo.taskmap.tasks[i].addr;
  64.         init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
  65.         strncpy(init.tasks[i].name, bootinfo.taskmap.tasks[i].name,
  66.             CONFIG_TASK_NAME_BUFLEN);
  67.     }
  68.    
  69.     /* Copy boot allocations info. */
  70.     ballocs.base = bootinfo.ballocs.base;
  71.     ballocs.size = bootinfo.ballocs.size;
  72.    
  73.     ofw_tree_init(bootinfo.ofw_root);
  74. }
  75.  
  76. /** Perform sparc64 specific initialization before mm is initialized. */
  77. void arch_pre_mm_init(void)
  78. {
  79.     if (config.cpu_active == 1)
  80.         trap_init();
  81. }
  82.  
  83. /** Perform sparc64 specific initialization afterr mm is initialized. */
  84. void arch_post_mm_init(void)
  85. {
  86.     if (config.cpu_active == 1) {
  87.         /*
  88.          * We have 2^11 different interrupt vectors.
  89.          * But we only create 128 buckets.
  90.          */
  91.         irq_init(1 << 11, 128);
  92.     }
  93. }
  94.  
  95. void arch_post_cpu_init(void)
  96. {
  97. }
  98.  
  99. void arch_pre_smp_init(void)
  100. {
  101. }
  102.  
  103. void arch_post_smp_init(void)
  104. {
  105.     if (config.cpu_active == 1) {
  106.         standalone_sparc64_console_init();
  107.  
  108.         /* Create thread that polls keyboard.
  109.          * XXX: this is only used by sgcn now
  110.          */
  111.         thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll",
  112.             true);
  113.         if (!t)
  114.             panic("Cannot create kkbdpoll.");
  115.         thread_ready(t);
  116.     }
  117. }
  118.  
  119. /** Calibrate delay loop.
  120.  *
  121.  * On sparc64, we implement delay() by waiting for the TICK register to
  122.  * reach a pre-computed value, as opposed to performing some pre-computed
  123.  * amount of instructions of known duration. We set the delay_loop_const
  124.  * to 1 in order to neutralize the multiplication done by delay().
  125.  */
  126. void calibrate_delay_loop(void)
  127. {
  128.     CPU->delay_loop_const = 1;
  129. }
  130.  
  131. /** Wait several microseconds.
  132.  *
  133.  * We assume that interrupts are already disabled.
  134.  *
  135.  * @param t Microseconds to wait.
  136.  */
  137. void asm_delay_loop(const uint32_t usec)
  138. {
  139.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
  140.         CPU->arch.clock_frequency / 1000000;
  141.  
  142.     while (tick_read() < stop)
  143.         ;
  144. }
  145.  
  146. /** Switch to userspace. */
  147. void userspace(uspace_arg_t *kernel_uarg)
  148. {
  149.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  150.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  151.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  152.         (uintptr_t) kernel_uarg->uspace_uarg);
  153.  
  154.     for (;;)
  155.         ;
  156.     /* not reached */
  157. }
  158.  
  159. void arch_reboot(void)
  160. {
  161.     // TODO
  162.     while (1);
  163. }
  164.  
  165. /** Construct function pointer
  166.  *
  167.  * @param fptr   function pointer structure
  168.  * @param addr   function address
  169.  * @param caller calling function address
  170.  *
  171.  * @return address of the function pointer
  172.  *
  173.  */
  174. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  175. {
  176.     return addr;
  177. }
  178.  
  179. /** @}
  180.  */
  181.