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
76 // 打开tty设备(控制台),作为标准输入输出。
77 // tty设备属于序列设备(Sequential Device),该类型设备的上层读写
78 // 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)
79 int fdstdout = open("/dev/tty", 0);
80 int fdstdin = dup2(stdout, 1);
90 #elif defined DEMO_SIGNAL
92 #elif defined DEMO_READDIR
94 #elif defined DEMO_IOTEST
96 #elif defined DEMO_INPUT_TEST
101 printf("==== test end ====\n");
113 * @brief LunaixOS的零号进程,该进程永远为可执行。
115 * 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。
117 * 同时,该进程也负责fork出我们的init进程。
125 init_proc_user_space(__current);
127 asm volatile("movw %0, %%ax\n"
136 "retf" ::"i"(UDATA_SEG),
137 "i"(USTACK_TOP & ~0xf),
143 extern uint8_t __kernel_start; /* link/linker.ld */
144 extern uint8_t __kernel_end; /* link/linker.ld */
145 extern uint8_t __init_hhk_end; /* link/linker.ld */
146 extern multiboot_info_t* _k_init_mb_info; /* k_init.c */
151 // 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
152 lock_reserved_memory();
155 acpi_init(_k_init_mb_info);
158 timer_init(SYS_TIMER_FREQUENCY_HZ);
167 console_start_flushing();
170 unlock_reserved_memory();
172 for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
173 vmm_del_mapping(PD_REFERENCED, (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 for (; j < pg_num; j++) {
208 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
209 if (_pa >= KERNEL_MM_BASE) {
210 // Don't fuck up our kernel space!
213 vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_NULL);
214 pmm_mark_page_occupied(
215 KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
217 // Save the progress for later unmapping.
218 mmaps[i].len_low = j * PG_SIZE;
220 for (; j < pg_num; j++) {
221 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
222 vmm_del_mapping(PD_REFERENCED, _pa);
223 if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
224 pmm_mark_page_free(_pa >> PG_SIZE_BITS);