1 #include <arch/x86/boot/multiboot.h>
2 #include <lunaix/block.h>
3 #include <lunaix/common.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>
19 #include <hal/acpi/acpi.h>
20 #include <hal/ahci/ahci.h>
22 #include <hal/ioapic.h>
25 #include <klibc/string.h>
30 _lxinit_main(); /* lxinit.c */
36 lock_reserved_memory();
39 unlock_reserved_memory();
42 __do_reserved_memory(int unlock);
45 // #define DEMO_SIGNAL
75 #elif defined DEMO_SIGNAL
77 #elif defined DEMO_READDIR
79 #elif defined DEMO_IOTEST
94 * @brief LunaixOS的零号进程,该进程永远为可执行。
96 * 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。
98 * 同时,该进程也负责fork出我们的init进程。
106 init_proc_user_space(__current);
108 asm volatile("movw %0, %%ax\n"
117 "retf" ::"i"(UDATA_SEG),
118 "i"(USTACK_TOP & ~0xf),
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 // 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
133 lock_reserved_memory();
135 assert_msg(kalloc_init(), "Fail to initialize heap");
137 acpi_init(_k_init_mb_info);
140 timer_init(SYS_TIMER_FREQUENCY_HZ);
146 // ahci_list_device();
151 console_start_flushing();
154 unlock_reserved_memory();
156 for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
157 vmm_del_mapping(PD_REFERENCED, (void*)i);
158 pmm_free_page(KERNEL_PID, (void*)i);
163 lock_reserved_memory()
165 __do_reserved_memory(0);
169 unlock_reserved_memory()
171 __do_reserved_memory(1);
175 __do_reserved_memory(int unlock)
177 multiboot_memory_map_t* mmaps = _k_init_mb_info->mmap_addr;
179 _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
180 // v_mapping mapping;
181 for (unsigned int i = 0; i < map_size; i++) {
182 multiboot_memory_map_t mmap = mmaps[i];
183 uint8_t* pa = PG_ALIGN(mmap.addr_low);
184 if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE || pa <= MEM_4MB) {
185 // Don't fuck up our kernel code or any free area!
188 size_t pg_num = CEIL(mmap.len_low, PG_SIZE_BITS);
191 for (; j < pg_num; j++) {
192 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
193 if (_pa >= KERNEL_MM_BASE) {
194 // Don't fuck up our kernel space!
197 vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_NULL);
198 pmm_mark_page_occupied(
199 KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
201 // Save the progress for later unmapping.
202 mmaps[i].len_low = j * PG_SIZE;
204 for (; j < pg_num; j++) {
205 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
206 vmm_del_mapping(PD_REFERENCED, _pa);
207 if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
208 pmm_mark_page_free(_pa >> PG_SIZE_BITS);