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