static int __init read_initrd(void)
{
void *area;
long long size;
int err;
if (initrd == NULL)
return 0;
err = os_file_size(initrd, &size);
if (err)
return 0;
/*
* This is necessary because alloc_bootmem craps out if you
* ask for no memory.
*/
if (size == 0) {
printk(KERN_ERR "\"%s\" is a zero-size initrd\n", initrd);
return 0;
}
area = alloc_bootmem(size);
if (area == NULL)
return 0;
if (load_initrd(initrd, area, size) == -1)
return 0;
initrd_start = (unsigned long) area;
initrd_end = initrd_start + size;
return 0;
}
void mpc8560_boot_linux(){
/* Fixme, will move it to skyeye.conf */
load_initrd();
set_bootcmd();
/* just for linux boot, so we need to do some map */
setup_boot_map();
gCPU.ccsr = 0xE0000; /* Just for boot linux */
}
/* This is the C kernel entry point */
void kmain(struct multiboot *mboot_header, addr_t initial_stack)
{
/* Store passed values, and initiate some early things
* We want serial log output as early as possible */
kernel_state_flags=0;
mtboot = mboot_header;
i_stack = initial_stack;
parse_kernel_elf(mboot_header, &kernel_elf);
#if CONFIG_MODULES
init_kernel_symbols();
#endif
init_serial();
console_init_stage1();
load_tables();
puts("~ SeaOS Version ");
char ver[32];
get_kernel_version(ver);
puts(ver);
puts(" Booting Up ~\n\r");
#if CONFIG_MODULES
init_module_system();
#endif
init_syscalls();
load_initrd(mtboot);
install_timer(1000);
pm_init(placement, mtboot);
init_main_cpu_1();
/* Now get the management stuff going */
printk(1, "[kernel]: Starting system management\n");
init_memory(mtboot);
init_main_cpu_2();
console_init_stage2();
parse_kernel_cmd((char *)(addr_t)mtboot->cmdline);
init_multitasking();
init_cache();
init_dm();
init_vfs();
/* Load the rest... */
process_initrd();
init_kern_task();
get_timed(&kernel_start_time);
printk(KERN_MILE, "[kernel]: Kernel is setup (%2.2d:%2.2d:%2.2d, %s, kv=%d, ts=%d bytes: ok)\n",
kernel_start_time.tm_hour, kernel_start_time.tm_min,
kernel_start_time.tm_sec, kernel_name, KVERSION, sizeof(task_t));
assert(!set_int(1));
if(!fork())
init();
sys_setsid();
enter_system(255);
kernel_idle_task();
}
int linux_load(struct sys_info *info, const char *file, const char *cmdline)
{
struct linux_header hdr;
struct linux_params *params;
uint32_t kern_addr, kern_size;
char *initrd_file = NULL;
fd = open_io(file);
if (fd == -1) {
return -1;
}
kern_addr = load_linux_header(&hdr);
if (kern_addr == 0)
return LOADER_NOT_SUPPORT;
params = phys_to_virt(LINUX_PARAM_LOC);
init_linux_params(params, &hdr);
set_memory_size(params, info);
initrd_file = parse_command_line(cmdline, phys_to_virt(COMMAND_LINE_LOC));
set_command_line_loc(params, &hdr);
kern_size = load_linux_kernel(&hdr, kern_addr);
if (kern_size == 0) {
if (initrd_file)
free(initrd_file);
return -1;
}
if (initrd_file) {
if (load_initrd(&hdr, info, kern_addr+kern_size, params, initrd_file)
!= 0) {
free(initrd_file);
return -1;
}
free(initrd_file);
}
hardware_setup();
start_linux(kern_addr, params);
return 0;
}