1 #include <arch/x86/boot/multiboot.h>
2 #include <lunaix/common.h>
3 #include <lunaix/lunistd.h>
4 #include <lunaix/lxconsole.h>
5 #include <lunaix/mm/cake.h>
6 #include <lunaix/mm/pmm.h>
7 #include <lunaix/mm/valloc.h>
8 #include <lunaix/mm/vmm.h>
9 #include <lunaix/peripheral/ps2kbd.h>
10 #include <lunaix/proc.h>
11 #include <lunaix/spike.h>
12 #include <lunaix/syscall.h>
13 #include <lunaix/syslog.h>
16 #include <hal/acpi/acpi.h>
17 #include <hal/ahci/ahci.h>
19 #include <hal/ioapic.h>
22 #include <klibc/string.h>
27 _lxinit_main(); /* lxinit.c */
33 lock_reserved_memory();
36 unlock_reserved_memory();
39 __do_reserved_memory(int unlock);
64 #elif defined DEMO_SIGNAL
79 * @brief LunaixOS的零号进程,该进程永远为可执行。
81 * 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。
83 * 同时,该进程也负责fork出我们的init进程。
91 init_proc_user_space(__current);
93 asm volatile("movw %0, %%ax\n"
102 "retf" ::"i"(UDATA_SEG),
103 "i"(USTACK_TOP & ~0xf),
109 extern uint8_t __kernel_start; /* link/linker.ld */
110 extern uint8_t __kernel_end; /* link/linker.ld */
111 extern uint8_t __init_hhk_end; /* link/linker.ld */
112 extern multiboot_info_t* _k_init_mb_info; /* k_init.c */
114 char test_sequence[] = "Once upon a time, in a magical land of Equestria. "
115 "There were two regal sisters who ruled together "
116 "and created harmony for all the land.";
121 struct hba_port* port = ahci_get_port(0);
122 char* buffer = vcalloc_dma(port->device->block_size);
123 strcpy(buffer, test_sequence);
124 kprintf("WRITE: %s\n", buffer);
129 port->device->ops.write_buffer(port, 0, buffer, port->device->block_size);
131 kprintf(KWARN "fail to write: %x\n", port->device->last_error);
134 memset(buffer, 0, port->device->block_size);
138 port->device->ops.read_buffer(port, 0, buffer, port->device->block_size);
139 kprintf(KDEBUG "%x, %x\n", port->regs[HBA_RPxIS], port->regs[HBA_RPxTFD]);
141 kprintf(KWARN "fail to read: %x\n", port->device->last_error);
143 kprint_hex(buffer, 256);
152 // 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
153 lock_reserved_memory();
157 assert_msg(kalloc_init(), "Fail to initialize heap");
160 acpi_init(_k_init_mb_info);
163 timer_init(SYS_TIMER_FREQUENCY_HZ);
176 console_start_flushing();
179 unlock_reserved_memory();
181 for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
182 vmm_del_mapping(PD_REFERENCED, (void*)i);
183 pmm_free_page(KERNEL_PID, (void*)i);
188 lock_reserved_memory()
190 __do_reserved_memory(0);
194 unlock_reserved_memory()
196 __do_reserved_memory(1);
200 __do_reserved_memory(int unlock)
202 multiboot_memory_map_t* mmaps = _k_init_mb_info->mmap_addr;
204 _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
205 // v_mapping mapping;
206 for (unsigned int i = 0; i < map_size; i++) {
207 multiboot_memory_map_t mmap = mmaps[i];
208 uint8_t* pa = PG_ALIGN(mmap.addr_low);
209 if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE || pa <= MEM_4MB) {
210 // Don't fuck up our kernel code or any free area!
213 size_t pg_num = CEIL(mmap.len_low, PG_SIZE_BITS);
216 for (; j < pg_num; j++) {
217 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
218 if (_pa >= KERNEL_MM_BASE) {
219 // Don't fuck up our kernel space!
222 vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_NULL);
223 pmm_mark_page_occupied(
224 KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
226 // Save the progress for later unmapping.
227 mmaps[i].len_low = j * PG_SIZE;
229 for (; j < pg_num; j++) {
230 uintptr_t _pa = pa + (j << PG_SIZE_BITS);
231 vmm_del_mapping(PD_REFERENCED, _pa);
232 if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
233 pmm_mark_page_free(_pa >> PG_SIZE_BITS);