Espresso 0.0.2c

files/kernel.c

@@ -0,0 +1,164 @@
+/* Check if the compiler thinks you are targeting the wrong operating system. */
+#if defined(__linux__)
+#error "You are not using a cross-compiler, you will most certainly run into trouble"
+#endif
+
+/* This tutorial will only work for the 32-bit ix86 targets. */
+#if !defined(__i386__)
+#error "This kernel needs to be compiled with a ix86-elf compiler"
+#endif
+
+#include <types.h>
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <kernel/boot.h>
+#include <kernel/kshell.h>
+
+#include <kdebug.h>
+
+#include <gdt.h>
+#include <drivers/idt.h>
+#include <drivers/irq.h>
+
+#include <scheduler.h>
+
+#include <multiboot.h>
+
+#include <drivers/pci.h>
+#include <drivers/ps2_keyboard.h>
+#include <drivers/pit.h>
+/*#include <drivers/ahci.h>*/
+#include <drivers/ide.h>
+#include <mm/mm.h>
+#include <fs/fat32.h>
+/*#include <fs/duckfs.h>*/
+#include <fs/vfs.h>
+#include <fs/sfs.h>
+
+#include <vector_extensions/sse.h>
+
+#include <kernel/intro.h>
+
+#include <builtin_games/miner.h>
+
+#include <fs/ssfs.h>
+
+
+extern void _hang_asm(void);
+extern void _sti_asm(void);
+
+void idle_task(void)
+{
+    while (1)
+        asm volatile("hlt");
+}
+
+
+void kernel_main(multiboot_info_t* mbd, uint32_t magic)
+{
+  
+  /* --- BEGIN INITIALIZATION SECTION --- */
+  
+  /* We need to initialize the terminal so that any error/debugging messages show. */
+  terminal_initialize();
+  
+  printf("Loading Espresso %s... ", KERNEL_VERSION);
+  
+#ifdef _DEBUG
+  printf("[ DEBUG BUILD ]");
+#endif
+  
+  printf("\n");
+  
+  terminal_setcolor(VGA_COLOR_RED);
+  
+  /* Make sure the magic number matches for memory mapping */
+  if(magic != MULTIBOOT_BOOTLOADER_MAGIC)
+  {
+    printf("[ ERROR ] invalid magic number!\n");
+    _hang_asm();
+  }
+
+  /* Check bit 6 to see if we have a valid memory map */
+  if(!(mbd->flags >> 6 & 0x1))
+  {
+    printf("[ ERROR ] invalid memory map given by GRUB bootloader\n");
+    _hang_asm();
+  }
+  
+  gdt_install(false);
+  
+  pic_remap(); /* must be done before idt_init() */
+  
+  idt_init();
+  
+  _sti_asm();
+  
+  irq_init(); /* MUST be done after pic_remap() and idt_init() */
+  
+  terminal_setcolor(VGA_COLOR_GREEN);
+  
+  pmm_init(mbd);
+  
+  paging_init();
+  
+  heap_init(0xC2000000, 0x80000);
+
+#ifdef _DEBUG
+  printd("Testing SSE...\n");
+#endif
+  int32_t sse_test_result = test_sse();
+  if (sse_test_result != 0)
+  {
+    printf("[ SSE ] SSE test failed with RV %d\n", sse_test_result);
+  }
+  else
+  {
+#ifdef _DEBUG
+    printd("SSE test passed\n");
+#endif
+  }
+  
+  pit_init();
+  
+  keyboard_init();
+  
+  ide_initialize();
+  
+  pci_init();
+
+  scheduler_init();
+  
+  /* --- END INITIALIZATION SECTION --- */
+
+  
+  terminal_setcolor(VGA_COLOR_LIGHT_GREEN);
+  
+  printf("Guten tag and welcome to Espresso %s\n", KERNEL_VERSION);
+
+  //terminal_clear();
+  
+  create_task(kshell_start);
+  create_task(idle_task);
+
+  extern task_t* task_list;
+  extern task_t* current_task;
+
+  current_task = task_list;
+
+  printf("in kernel_main\n");
+  
+  /*extern void terminal_clear(void);
+  
+  terminal_clear();
+  
+  kshell_start(1, NULL);*/
+  
+  for(;;) /* Loop infinitely. We only do something when an interrupt/syscall happens now. */
+  {
+    asm volatile("hlt" ::: "memory");
+  }
+}