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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 <console/console.h>
  41. #include <arch/boot/boot.h>
  42. #include <arch/arch.h>
  43. #include <arch/asm.h>
  44. #include <arch/mm/page.h>
  45. #include <arch/stack.h>
  46. #include <genarch/ofw/ofw_tree.h>
  47. #include <userspace.h>
  48. #include <ddi/irq.h>
  49. #include <string.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.         strncpy(init.tasks[i].name, bootinfo.taskmap.tasks[i].name,
  65.             CONFIG_TASK_NAME_BUFLEN);
  66.     }
  67.    
  68.     /* Copy boot allocations info. */
  69.     ballocs.base = bootinfo.ballocs.base;
  70.     ballocs.size = bootinfo.ballocs.size;
  71.    
  72.     ofw_tree_init(bootinfo.ofw_root);
  73. }
  74.  
  75. /** Perform sparc64 specific initialization before mm is initialized. */
  76. void arch_pre_mm_init(void)
  77. {
  78.     if (config.cpu_active == 1)
  79.         trap_init();
  80. }
  81.  
  82. /** Perform sparc64 specific initialization afterr mm is initialized. */
  83. void arch_post_mm_init(void)
  84. {
  85.     if (config.cpu_active == 1) {
  86.         /*
  87.          * We have 2^11 different interrupt vectors.
  88.          * But we only create 128 buckets.
  89.          */
  90.         irq_init(1 << 11, 128);
  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.     if (config.cpu_active == 1) {
  105.         standalone_sparc64_console_init();
  106.     }
  107. }
  108.  
  109. /** Calibrate delay loop.
  110.  *
  111.  * On sparc64, we implement delay() by waiting for the TICK register to
  112.  * reach a pre-computed value, as opposed to performing some pre-computed
  113.  * amount of instructions of known duration. We set the delay_loop_const
  114.  * to 1 in order to neutralize the multiplication done by delay().
  115.  */
  116. void calibrate_delay_loop(void)
  117. {
  118.     CPU->delay_loop_const = 1;
  119. }
  120.  
  121. /** Wait several microseconds.
  122.  *
  123.  * We assume that interrupts are already disabled.
  124.  *
  125.  * @param t Microseconds to wait.
  126.  */
  127. void asm_delay_loop(const uint32_t usec)
  128. {
  129.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
  130.         CPU->arch.clock_frequency / 1000000;
  131.  
  132.     while (tick_read() < stop)
  133.         ;
  134. }
  135.  
  136. /** Switch to userspace. */
  137. void userspace(uspace_arg_t *kernel_uarg)
  138. {
  139.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  140.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  141.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  142.         (uintptr_t) kernel_uarg->uspace_uarg);
  143.  
  144.     for (;;)
  145.         ;
  146.     /* not reached */
  147. }
  148.  
  149. void arch_reboot(void)
  150. {
  151.     // TODO
  152.     while (1);
  153. }
  154.  
  155. /** Construct function pointer
  156.  *
  157.  * @param fptr   function pointer structure
  158.  * @param addr   function address
  159.  * @param caller calling function address
  160.  *
  161.  * @return address of the function pointer
  162.  *
  163.  */
  164. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  165. {
  166.     return addr;
  167. }
  168.  
  169. /** @}
  170.  */
  171.