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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 <print.h>
  51.  
  52. #include <arch/drivers/niagara.h>
  53.  
  54. bootinfo_t bootinfo;
  55.  
  56. /** Perform sparc64 specific initialization before main_bsp() is called. */
  57. void arch_pre_main(void)
  58. {
  59.     /*
  60.      * Initialize Niagara input/output driver.
  61.      * This will be moved to arch_post_mm_init when the memory management
  62.      * is finished for sun4v.
  63.      */
  64.     niagara_init();
  65.  
  66.     /* Copy init task info. */
  67.     init.cnt = bootinfo.taskmap.count;
  68.  
  69.     uint32_t i;
  70.  
  71.     for (i = 0; i < bootinfo.taskmap.count; i++) {
  72.         init.tasks[i].addr = (uintptr_t) bootinfo.taskmap.tasks[i].addr;
  73.         init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
  74.     }
  75.    
  76.     /* Copy boot allocations info. */
  77.     ballocs.base = bootinfo.ballocs.base;
  78.     ballocs.size = bootinfo.ballocs.size;
  79.    
  80.     ofw_tree_init(bootinfo.ofw_root);
  81. }
  82.  
  83. /** Perform sparc64 specific initialization before mm is initialized. */
  84. void arch_pre_mm_init(void)
  85. {
  86.     if (config.cpu_active == 1)
  87.         trap_init();
  88. }
  89.  
  90. /** Perform sparc64 specific initialization afterr mm is initialized. */
  91. void arch_post_mm_init(void)
  92. {
  93.     if (config.cpu_active == 1) {
  94.         /*
  95.          * We have 2^11 different interrupt vectors.
  96.          * But we only create 128 buckets.
  97.          */
  98.         irq_init(1 << 11, 128);
  99.  
  100.         standalone_sparc64_console_init();
  101.     }
  102. }
  103.  
  104. void arch_post_cpu_init(void)
  105. {
  106. }
  107.  
  108. void arch_pre_smp_init(void)
  109. {
  110. }
  111.  
  112. void arch_post_smp_init(void)
  113. {
  114.     static thread_t *t = NULL;
  115.  
  116.  
  117.     if (!t) {
  118.         /*
  119.              * Create thread that polls keyboard.
  120.              */
  121.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  122.         if (!t)
  123.             panic("cannot create kkbdpoll\n");
  124.         thread_ready(t);
  125.     }
  126. }
  127.  
  128. /** Calibrate delay loop.
  129.  *
  130.  * On sparc64, we implement delay() by waiting for the TICK register to
  131.  * reach a pre-computed value, as opposed to performing some pre-computed
  132.  * amount of instructions of known duration. We set the delay_loop_const
  133.  * to 1 in order to neutralize the multiplication done by delay().
  134.  */
  135. void calibrate_delay_loop(void)
  136. {
  137.     CPU->delay_loop_const = 1;
  138. }
  139.  
  140. /** Wait several microseconds.
  141.  *
  142.  * We assume that interrupts are already disabled.
  143.  *
  144.  * @param t Microseconds to wait.
  145.  */
  146. void asm_delay_loop(const uint32_t usec)
  147. {
  148.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
  149.         CPU->arch.clock_frequency / 1000000;
  150.  
  151.     while (tick_read() < stop)
  152.         ;
  153. }
  154.  
  155. /** Switch to userspace. */
  156. void userspace(uspace_arg_t *kernel_uarg)
  157. {
  158.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  159.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  160.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  161.         (uintptr_t) kernel_uarg->uspace_uarg);
  162.  
  163.     for (;;)
  164.         ;
  165.     /* not reached */
  166. }
  167.  
  168. void arch_reboot(void)
  169. {
  170.     // TODO
  171.     while (1);
  172. }
  173.  
  174. /** @}
  175.  */
  176.