103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/*
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Copyright (C) 2015-2019 The University of Notre Dame
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This software is distributed under the GNU General Public License.
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See the file LICENSE for details.
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*/
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#include "kernel/config.h"
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#include "console.h"
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#include "page.h"
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#include "process.h"
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#include "keyboard.h"
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#include "mouse.h"
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#include "interrupt.h"
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#include "clock.h"
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#include "ata.h"
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#include "device.h"
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#include "cdromfs.h"
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#include "string.h"
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#include "graphics.h"
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#include "kernel/ascii.h"
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#include "kernel/syscall.h"
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#include "rtc.h"
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#include "kernelcore.h"
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#include "kmalloc.h"
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#include "memorylayout.h"
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#include "kshell.h"
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#include "cdromfs.h"
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#include "diskfs.h"
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#include "serial.h"
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/*
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This is the C initialization point of the kernel.
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By the time we reach this point, we are in protected mode,
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with interrupts disabled, a valid C stack, but no malloc heap.
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Now we initialize each subsystem in the proper order:
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*/
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int kernel_main()
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{
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struct console *console = console_create_root();
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console_addref(console);
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printf("Basekernel Version %d.%d %s\n",KERNEL_MAJOR,KERNEL_MINOR,__DATE__);
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printf("video: %d x %d (addr %x)\n", video_xres, video_yres, video_buffer);
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printf("kernel: %d bytes\n", kernel_size);
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page_init();
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kmalloc_init((char *) KMALLOC_START, KMALLOC_LENGTH);
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interrupt_init();
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mouse_init();
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keyboard_init();
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serial_init();
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rtc_init();
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clock_init();
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process_init();
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ata_init();
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cdrom_init();
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diskfs_init();
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current->ktable[KNO_STDIN] = kobject_create_console(console);
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current->ktable[KNO_STDOUT] = kobject_copy(current->ktable[0]);
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current->ktable[KNO_STDERR] = kobject_copy(current->ktable[1]);
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current->ktable[KNO_STDWIN] = kobject_create_window(&window_root);
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current->ktable[KNO_STDDIR] = 0; // No current dir until something is mounted.
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printf("kernel initialization is done.\n");
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#define KSHELL_SERIAL
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#ifndef KSHELL_SERIAL
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kshell_launch();
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// never reached!
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#else
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// main IO loop, from kshell_launch
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char line[100];
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int lineIndex=0;
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while(1) {
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// console_putchar(console,console_getchar(console));
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char c;
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while ((c = serial_read_nonblock(0))<0) clock_wait(10);
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console_putchar(console,c);
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if (c=='\n') { // End of line
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const char *argv[100];
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int argc;
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argc = 0;
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line[lineIndex]=0;
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argv[argc] = strtok(line, " ");
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// split line in tokens separated by spaces
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while(argv[argc]) {
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argc++;
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argv[argc] = strtok(0, " ");
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}
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if(argc > 0) {
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kshell_execute(argc, argv);
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}
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lineIndex=0;
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} else line[lineIndex++]=c; // collect char
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}
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#endif
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// never reached
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return 0;
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}
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