/**
* Read the disk image with the given filename into a structure.
*/
struct ext2_disk *ext2_read_disk(const char *filename) {
// Assert some ext2 facts before continuing
assert(sizeof(struct ext2_superblock) == 1024);
assert(sizeof(struct ext2_block_group) == 32);
assert(sizeof(struct ext2_inode) == 128);
// Allocate space for the disk structure
struct ext2_disk *disk = malloc(sizeof(struct ext2_disk));
/*
* Map the disk image from file
*/
// Open a file descriptor
int fd = open(filename, O_RDWR);
if (fd == -1) err(1, "Failed to open file %s", filename);
// Get the file size
struct stat st;
fstat(fd, &st);
// Map the file into memory
disk->bytes = mmap(0, // Let the OS choose the start address
(size_t) st.st_size, // Map the entire file size into memory
PROT_READ | PROT_WRITE, // Read and write permissions
MAP_SHARED, // Share file changes with other processes
fd, // Use the file descriptor from above
0); // Start at the beginning of the file
if (disk->bytes == MAP_FAILED) err(1, "Failed to map file %s to memory", filename);
// Read the superblock
disk->superblock = ext2_read_superblock(disk->bytes);
// Read all block groups
disk->block_groups = ext2_read_block_groups(disk);
return disk;
}
void start_kernel(struct multiboot *mbp, unsigned int magic,u32 esp)
{
u32 initrd_location = *((u32*)mbp->mods_addr);
u32 initrd_end = *(u32*)(mbp->mods_addr+4);
__asm__ __volatile__("cli");
cpu_init();
placement_pointer = initrd_end;
vmmngr_initialize(mbp->mem_upper + mbp->mem_lower);
kheap = _heapmngr_initialize(0x02000000, 0x20000000, 0x200000);
con_init();
init_IRQ();
time_init();
_kbd_init_hook();
/*setup_irq(2, &irq2);
setup_irq(3, &irq3 );
setup_irq(4, &irq4 );
setup_irq(5, &irq5 );
setup_irq(8, &irq8 );
*/
//auto_fpu();
task_initialize();
syscalls_install();
fs_root_initrd = install_initrd(initrd_location);
//pci_inst_check();
//enable_pci_master(0,3,0); //8139 need this
struct request *info = 0;
probe_ide(info);
hd_init_hook_();
putch('P');
double test = 3.14444;
printk("test ::: %d\n", test);
//serial_install();
//unsigned long cpu_khz = init_tsc();
//u32 *pf = (u32 *)0xffff0000;
//*pf = 10;
ext2_read_superblock();
register_filesystem();
__asm__ __volatile__("sti");
//graphics_install_bochs(1024,768);
//heaptest();
//create_thread(test_task,1);
while(1)
{
if(getch_polling() == 'i')
{
const char *filename = "test__2";
//execve__((char*)filename,0,0);
load_elf((char*)filename,0,0);
//show_state();
}
}
}
