147 lines
4.5 KiB
C
147 lines
4.5 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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*
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* The ToAruOS kernel is released under the terms of the
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* University of Illinois / NCSA License.
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*
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* Copyright (c) 2011-2013 Kevin Lange. All rights reserved.
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*
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* Dedicated to the memory of
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* Dennis Ritchie
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* 1941-2011
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*
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* Developed by: ToAruOS Kernel Development Team
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* http://github.com/klange/osdev
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal with the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimers.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimers in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the ToAruOS Kernel Development Team, Kevin Lange,
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* nor the names of its contributors may be used to endorse
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* or promote products derived from this Software without specific prior
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* written permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* WITH THE SOFTWARE.
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*/
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#include <system.h>
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#include <boot.h>
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#include <ext2.h>
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#include <fs.h>
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#include <logging.h>
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#include <process.h>
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#include <shm.h>
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#include <args.h>
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#include <module.h>
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uintptr_t initial_esp = 0;
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/*
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* multiboot i386 (pc) kernel entry point
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*/
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int kmain(struct multiboot *mboot, uint32_t mboot_mag, uintptr_t esp) {
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initial_esp = esp;
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extern char * cmdline;
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if (mboot_mag == MULTIBOOT_EAX_MAGIC) {
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/* Multiboot (GRUB, native QEMU, PXE) */
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debug_print(NOTICE, "Relocating Multiboot structures...");
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mboot_ptr = mboot;
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char cmdline_[1024];
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if (mboot_ptr->vbe_mode_info) {
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lfb_vid_memory = (uint8_t *)((vbe_info_t *)(mboot_ptr->vbe_mode_info))->physbase;
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}
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size_t len = strlen((char *)mboot_ptr->cmdline);
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memmove(cmdline_, (char *)mboot_ptr->cmdline, len + 1);
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/* Relocate the command line */
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cmdline = (char *)kmalloc(len + 1);
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memcpy(cmdline, cmdline_, len + 1);
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}
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/* Initialize core modules */
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gdt_install(); /* Global descriptor table */
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idt_install(); /* IDT */
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isrs_install(); /* Interrupt service requests */
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irq_install(); /* Hardware interrupt requests */
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/* Memory management */
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paging_install(mboot_ptr->mem_upper + mboot_ptr->mem_lower);
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heap_install(); /* Kernel heap */
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if (cmdline) {
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args_parse(cmdline);
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}
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vfs_install();
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/* Hardware drivers */
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timer_install(); /* PIC driver */
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tasking_install(); /* Multi-tasking */
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fpu_install(); /* FPU/SSE magic */
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syscalls_install(); /* Install the system calls */
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shm_install(); /* Install shared memory */
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modules_install(); /* Modules! */
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keyboard_install(); /* Keyboard interrupt handler */
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mouse_install(); /* Mouse driver */
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keyboard_reset_ps2();
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serial_mount_devices();
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vfs_mount("/dev/null", null_device_create());
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vfs_mount("/dev/zero", zero_device_create());
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vfs_mount("/dev/hello", hello_device_create());
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vfs_mount("/dev/random", random_device_create());
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vfs_mount("/tmp", tmpfs_create());
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vfs_mount("/home/local", tmpfs_create());
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vfs_mount("/proc", procfs_create());
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debug_print_vfs_tree();
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legacy_parse_args();
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if (!fs_root) {
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debug_print(CRITICAL, "There is no file system mounted.");
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debug_print(CRITICAL, "You have done something wrong;");
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debug_print(CRITICAL, "Did you forget to mount a hard disk?");
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while (1) {
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}
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}
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/* Start shell instead */
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module_load("/mod/debug_shell.ko");
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/* Prepare to run /bin/init */
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char * argv[] = {
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"/bin/init",
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boot_arg,
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boot_arg_extra,
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NULL
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};
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int argc = 0;
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while (argv[argc]) {
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argc++;
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}
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system(argv[0], argc, argv); /* Run init */
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return 0;
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}
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