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  1. /*
  2.  * Copyright (c) 2005 Martin Decky
  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 ppc32
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <config.h>
  36. #include <arch.h>
  37. #include <arch/boot/boot.h>
  38. #include <arch/drivers/cuda.h>
  39. #include <arch/interrupt.h>
  40. #include <genarch/fb/fb.h>
  41. #include <genarch/fb/visuals.h>
  42. #include <userspace.h>
  43. #include <proc/uarg.h>
  44. #include <console/console.h>
  45. #include <ddi/device.h>
  46. #include <ddi/irq.h>
  47. #include <arch/drivers/pic.h>
  48.  
  49. #define IRQ_COUNT   64
  50.  
  51. bootinfo_t bootinfo;
  52.  
  53. void arch_pre_main(void)
  54. {
  55.     /* Setup usermode */
  56.     init.cnt = bootinfo.taskmap.count;
  57.    
  58.     uint32_t i;
  59.    
  60.     for (i = 0; i < bootinfo.taskmap.count; i++) {
  61.         init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr);
  62.         init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
  63.     }
  64. }
  65.  
  66. void arch_pre_mm_init(void)
  67. {
  68.     /* Initialize dispatch table */
  69.     interrupt_init();
  70.  
  71.     /* Start decrementer */
  72.     start_decrementer();
  73. }
  74.  
  75. void arch_post_mm_init(void)
  76. {
  77.     if (config.cpu_active == 1) {
  78.         /* Initialize framebuffer */
  79.         unsigned int visual;
  80.        
  81.         switch (bootinfo.screen.bpp) {
  82.         case 8:
  83.             visual = VISUAL_INDIRECT_8;
  84.             break;
  85.         case 16:
  86.             visual = VISUAL_RGB_5_5_5;
  87.             break;
  88.         case 24:
  89.             visual = VISUAL_RGB_8_8_8;
  90.             break;
  91.         case 32:
  92.             visual = VISUAL_RGB_0_8_8_8;
  93.             break;
  94.         default:
  95.             panic("Unsupported bits per pixel");
  96.         }
  97.         fb_properties_t prop = {
  98.             .addr = bootinfo.screen.addr,
  99.             .offset = 0,
  100.             .x = bootinfo.screen.width,
  101.             .y = bootinfo.screen.height,
  102.             .scan = bootinfo.screen.scanline,
  103.             .visual = visual,
  104.         };
  105.         fb_init(&prop);
  106.        
  107.         /* Initialize IRQ routing */
  108.         irq_init(IRQ_COUNT, IRQ_COUNT);
  109.    
  110.         /* Initialize PIC */
  111.         pic_init(bootinfo.keyboard.addr, PAGE_SIZE);
  112.        
  113.         /* Initialize I/O controller */
  114.         cuda_init(device_assign_devno(),
  115.             bootinfo.keyboard.addr + 0x16000, 2 * PAGE_SIZE);
  116.        
  117.         /* Merge all zones to 1 big zone */
  118.         zone_merge_all();
  119.     }
  120. }
  121.  
  122. void arch_post_cpu_init(void)
  123. {
  124. }
  125.  
  126. void arch_pre_smp_init(void)
  127. {
  128. }
  129.  
  130. void arch_post_smp_init(void)
  131. {
  132. }
  133.  
  134. void calibrate_delay_loop(void)
  135. {
  136. }
  137.  
  138. void userspace(uspace_arg_t *kernel_uarg)
  139. {
  140.     userspace_asm((uintptr_t) kernel_uarg->uspace_uarg,
  141.         (uintptr_t) kernel_uarg->uspace_stack +
  142.         THREAD_STACK_SIZE - SP_DELTA,
  143.         (uintptr_t) kernel_uarg->uspace_entry);
  144.    
  145.     /* Unreachable */
  146.     for (;;)
  147.         ;
  148. }
  149.  
  150. /** Acquire console back for kernel
  151.  *
  152.  */
  153. void arch_grab_console(void)
  154. {
  155.     fb_redraw();
  156.     cuda_grab();
  157. }
  158.  
  159. /** Return console to userspace
  160.  *
  161.  */
  162. void arch_release_console(void)
  163. {
  164.     cuda_release();
  165. }
  166.  
  167. /** @}
  168.  */
  169.