1 #include <lunaix/block.h>
2 #include <lunaix/common.h>
3 #include <lunaix/fctrl.h>
5 #include <lunaix/fs/twifs.h>
6 #include <lunaix/lunistd.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/proc.h>
14 #include <lunaix/spike.h>
15 #include <lunaix/syscall.h>
16 #include <lunaix/syslog.h>
17 #include <lunaix/types.h>
19 #include <hal/acpi/acpi.h>
20 #include <hal/ahci/ahci.h>
22 #include <hal/ioapic.h>
26 #include <arch/x86/boot/multiboot.h>
28 #include <klibc/string.h>
30 #include <ulibc/stdio.h>
35 _lxinit_main(); /* lxinit.c */
41 lock_reserved_memory();
44 unlock_reserved_memory();
47 __do_reserved_memory(int unlock);
50 // #define DEMO_SIGNAL
51 // #define DEMO_READDIR
52 // #define DEMO_IOTEST
53 // #define DEMO_INPUT_TEST
54 #define DEMO_SIMPLE_SH
80 // 打开tty设备(控制台),作为标准输入输出。
81 // tty设备属于序列设备(Sequential Device),该类型设备的上层读写
82 // 无须经过Lunaix的缓存层,而是直接下发到底层驱动。(不受FO_DIRECT的影响)
83 int fdstdout = open("/dev/tty", 0);
84 int fdstdin = dup2(stdout, 1);
94 #elif defined DEMO_SIGNAL
96 #elif defined DEMO_READDIR
98 #elif defined DEMO_IOTEST
100 #elif defined DEMO_INPUT_TEST
102 #elif defined DEMO_SIMPLE_SH
107 printf("==== test end ====\n");
119 * @brief LunaixOS的零号进程,该进程永远为可执行。
121 * 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。
123 * 同时,该进程也负责fork出我们的init进程。
131 init_proc_user_space(__current);
133 asm volatile("movw %0, %%ax\n"
142 "retf" ::"i"(UDATA_SEG),
143 "i"(USTACK_TOP & ~0xf),
149 extern uint8_t __kernel_start; /* link/linker.ld */
150 extern uint8_t __kernel_end; /* link/linker.ld */
151 extern uint8_t __init_hhk_end; /* link/linker.ld */
152 extern multiboot_info_t* _k_init_mb_info; /* k_init.c */
157 // 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
158 lock_reserved_memory();
161 acpi_init(_k_init_mb_info);
164 timer_init(SYS_TIMER_FREQUENCY_HZ);
173 console_start_flushing();
176 unlock_reserved_memory();
178 for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
179 vmm_del_mapping(PD_REFERENCED, (void*)i);
180 pmm_free_page(KERNEL_PID, (void*)i);
183 for (size_t i = L1_INDEX(KERNEL_MM_BASE); i < 1023; i++) {
184 vmm_set_mapping(PD_REFERENCED, i << 22, 0, 0, VMAP_NOMAP);
189 lock_reserved_memory()
191 __do_reserved_memory(0);
195 unlock_reserved_memory()
197 __do_reserved_memory(1);
201 __do_reserved_memory(int unlock)
203 multiboot_memory_map_t* mmaps = _k_init_mb_info->mmap_addr;
205 _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
206 // v_mapping mapping;
207 for (unsigned int i = 0; i < map_size; i++) {
208 multiboot_memory_map_t mmap = mmaps[i];
209 uint8_t* pa = PG_ALIGN(mmap.addr_low);
210 if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE || pa <= MEM_4MB) {
211 // Don't fuck up our kernel code or any free area!
214 size_t pg_num = CEIL(mmap.len_low, PG_SIZE_BITS);
217 for (; j < pg_num; j++) {
218 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
219 if (_pa >= KERNEL_MM_BASE) {
220 // Don't fuck up our kernel space!
223 vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_NULL);
224 pmm_mark_page_occupied(
225 KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
227 // Save the progress for later unmapping.
228 mmaps[i].len_low = j * PG_SIZE;
230 for (; j < pg_num; j++) {
231 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
232 vmm_del_mapping(PD_REFERENCED, _pa);
233 if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
234 pmm_mark_page_free(_pa >> PG_SIZE_BITS);