1 #include <lunaix/block.h>
2 #include <lunaix/common.h>
3 #include <lunaix/foptions.h>
5 #include <lunaix/fs/twifs.h>
7 #include <lunaix/lxconsole.h>
8 #include <lunaix/mm/cake.h>
9 #include <lunaix/mm/pmm.h>
10 #include <lunaix/mm/valloc.h>
11 #include <lunaix/mm/vmm.h>
12 #include <lunaix/peripheral/ps2kbd.h>
13 #include <lunaix/peripheral/serial.h>
14 #include <lunaix/spike.h>
15 #include <lunaix/syscall.h>
16 #include <lunaix/syslog.h>
17 #include <lunaix/types.h>
19 #include <sdbg/protocol.h>
21 #include <hal/acpi/acpi.h>
22 #include <hal/ahci/ahci.h>
24 #include <hal/ioapic.h>
28 #include <arch/x86/boot/multiboot.h>
30 #include <klibc/string.h>
38 lock_reserved_memory();
41 unlock_reserved_memory();
44 __do_reserved_memory(int unlock);
49 struct v_dnode* dnode;
51 if ((errno = vfs_walk_proc("/dev/sdb", &dnode, NULL, 0))) {
52 kprintf(KERROR "fail to acquire device. (%d)", errno);
56 struct device* dev = (struct device*)dnode->inode->data;
57 if ((errno = vfs_mount("/mnt/lunaix-os", "iso9660", dev, 0))) {
58 kprintf(KERROR "fail to boot medium. (%d)", errno);
69 struct ld_param param;
70 char filename[] = "/mnt/lunaix-os/usr/init";
72 ld_create_param(¶m, __current, VMS_SELF);
74 if ((errno = exec_load_byname(¶m, filename, NULL, NULL))) {
79 asm volatile("movw %0, %%ax\n"
88 "retf" ::"i"(UDATA_SEG),
89 "r"(param.info.stack_top),
94 fail("should not reach");
97 kprintf(KERROR "fail to load initd. (%d)", errno);
102 * @brief LunaixOS的零号进程,该进程永远为可执行。
104 * 这主要是为了保证调度器在没有进程可调度时依然有事可做。
106 * 同时,该进程也负责fork出我们的init进程。
114 init_proc_user_space(__current);
116 if (!mount_bootmedium() || !exec_initd()) {
124 extern uint8_t __kernel_start; /* link/linker.ld */
125 extern uint8_t __kernel_end; /* link/linker.ld */
126 extern uint8_t __init_hhk_end; /* link/linker.ld */
127 extern multiboot_info_t* _k_init_mb_info; /* k_init.c */
132 kprintf(KINFO "\033[11;0mLunaixOS (gcc v%s, %s)\033[39;49m\n",
136 // 锁定所有系统预留页(内存映射IO,ACPI之类的),并且进行1:1映射
137 lock_reserved_memory();
140 acpi_init(_k_init_mb_info);
152 timer_init(SYS_TIMER_FREQUENCY_HZ);
155 // peripherals & chipset features
163 console_start_flushing();
166 // expose cake allocator states to vfs
169 unlock_reserved_memory();
172 for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
173 vmm_del_mapping(VMS_SELF, (void*)i);
174 pmm_free_page(KERNEL_PID, (void*)i);
179 lock_reserved_memory()
181 __do_reserved_memory(0);
185 unlock_reserved_memory()
187 __do_reserved_memory(1);
191 __do_reserved_memory(int unlock)
193 multiboot_memory_map_t* mmaps = _k_init_mb_info->mmap_addr;
195 _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
196 // v_mapping mapping;
197 for (unsigned int i = 0; i < map_size; i++) {
198 multiboot_memory_map_t mmap = mmaps[i];
199 uint8_t* pa = PG_ALIGN(mmap.addr_low);
200 if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE || pa <= MEM_4MB) {
201 // Don't fuck up our kernel code or any free area!
204 size_t pg_num = CEIL(mmap.len_low, PG_SIZE_BITS);
207 kprintf("mem: freeze: %p..%p type=%x\n",
209 pa + pg_num * PG_SIZE,
211 for (; j < pg_num; j++) {
212 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
213 if (_pa >= KERNEL_MM_BASE) {
214 // Don't fuck up our kernel space!
217 vmm_set_mapping(VMS_SELF, _pa, _pa, PG_PREM_R, VMAP_NULL);
218 pmm_mark_page_occupied(
219 KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
221 // Save the progress for later unmapping.
222 mmaps[i].len_low = j * PG_SIZE;
224 kprintf("mem: reclaim: %p..%p type=%x\n",
226 pa + pg_num * PG_SIZE,
228 for (; j < pg_num; j++) {
229 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
230 vmm_del_mapping(VMS_SELF, _pa);
231 if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
232 pmm_mark_page_free(_pa >> PG_SIZE_BITS);