#include <lunaix/common.h>
-#include <lunaix/tty/tty.h>
-
#include <lunaix/device.h>
+#include <lunaix/foptions.h>
+#include <lunaix/input.h>
+#include <lunaix/isrm.h>
#include <lunaix/lxconsole.h>
+#include <lunaix/mm/cake.h>
+#include <lunaix/mm/mmio.h>
#include <lunaix/mm/page.h>
#include <lunaix/mm/pmm.h>
+#include <lunaix/mm/valloc.h>
#include <lunaix/mm/vmm.h>
#include <lunaix/process.h>
#include <lunaix/sched.h>
#include <lunaix/spike.h>
+#include <lunaix/syscall.h>
+#include <lunaix/tty/tty.h>
#include <lunaix/types.h>
#include <arch/x86/boot/multiboot.h>
#include <klibc/stdio.h>
#include <klibc/string.h>
-extern uint8_t __kernel_start;
-extern uint8_t __kernel_end;
-extern uint8_t __init_hhk_end;
+extern u8_t __kernel_start;
+extern u8_t __kernel_end;
+extern u8_t __init_hhk_end;
#define PP_KERN_SHARED (PP_FGSHARED | PP_TKERN)
x86_page_table* __kernel_ptd;
-struct proc_info tmp;
-
extern void
__proc0(); /* proc0.c */
void
_kernel_pre_init()
{
+ // interrupts
_init_idt();
+ isrm_init();
intr_routine_init();
+ // memory
pmm_init(MEM_1MB + (_k_init_mb_info->mem_upper << 10));
vmm_init();
_k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
setup_memory((multiboot_memory_map_t*)_k_init_mb_info->mmap_addr, map_size);
-
- tty_init((void*)VGA_BUFFER_VADDR);
- tty_set_theme(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
-
- __kernel_ptd = cpu_rcr3();
-
- tmp = (struct proc_info){ .page_table = __kernel_ptd };
-
- __current = &tmp;
}
void
_kernel_init()
{
int errno = 0;
+
+ // allocators
cake_init();
valloc_init();
+ sched_init();
+
+ // crt
+ tty_init(ioremap(VGA_FRAMEBUFFER, PG_SIZE));
+ tty_set_theme(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
+
+ // file system & device subsys
vfs_init();
fsm_init();
+ input_init();
+
+ vfs_export_attributes();
- device_init();
+ lxconsole_init();
if ((errno = vfs_mount_root("ramfs", NULL))) {
panickf("Fail to mount root. (errno=%d)", errno);
}
- // FIXME replace with more specific fs for device.
- vfs_mount("/dev", "twifs", NULL);
+ vfs_mount("/dev", "devfs", NULL, 0);
+ vfs_mount("/sys", "twifs", NULL, MNT_RO);
+ vfs_mount("/task", "taskfs", NULL, MNT_RO);
- lxconsole_init();
+ lxconsole_spawn_ttydev();
+ device_init_builtin();
- sched_init();
+ syscall_install();
spawn_proc0();
}
proc0->intr_ctx = (isr_param){ .registers = { .ds = KDATA_SEG,
.es = KDATA_SEG,
.fs = KDATA_SEG,
- .gs = KDATA_SEG },
- .cs = KCODE_SEG,
- .eip = (void*)__proc0,
- .ss = KDATA_SEG,
- .eflags = cpu_reflags() };
+ .gs = KDATA_SEG } };
proc0->parent = proc0;
// 方案1：必须在读取eflags之后禁用。否则当进程被调度时，中断依然是关闭的！
// 为内核创建一个专属栈空间。
for (size_t i = 0; i < (KSTACK_SIZE >> PG_SIZE_BITS); i++) {
- uintptr_t pa = pmm_alloc_page(KERNEL_PID, 0);
- vmm_set_mapping(PD_REFERENCED,
+ ptr_t pa = pmm_alloc_page(KERNEL_PID, 0);
+ vmm_set_mapping(VMS_SELF,
KSTACK_START + (i << PG_SIZE_BITS),
pa,
PG_PREM_RW,
VMAP_NULL);
}
- // 手动设置进程上下文：用于第一次调度
- asm volatile("movl %%esp, %%ebx\n"
- "movl %1, %%esp\n"
- "pushf\n"
- "pushl %2\n"
- "pushl %3\n"
- "pushl $0\n"
- "pushl $0\n"
- "movl %%esp, %0\n"
- "movl %%ebx, %%esp\n"
- : "=m"(proc0->intr_ctx.registers.esp)
- : "i"(KSTACK_TOP), "i"(KCODE_SEG), "r"(proc0->intr_ctx.eip)
- : "%ebx", "memory");
+ struct exec_param* execp =
+ (struct exec_param*)(KSTACK_TOP - sizeof(struct exec_param));
+
+ *execp = (struct exec_param){ .cs = KCODE_SEG,
+ .eip = (ptr_t)__proc0,
+ .ss = KDATA_SEG,
+ .eflags = cpu_reflags() };
+ proc0->intr_ctx.execp = execp;
+
+ // 加载x87默认配置
+ asm volatile("fninit\n"
+ "fxsave (%%eax)" ::"a"(proc0->fxstate)
+ : "memory");
// 向调度器注册进程。
commit_process(proc0);
assert_msg(0, "Unexpected Return");
}
-extern void __usrtext_start;
-extern void __usrtext_end;
+extern u8_t __usrtext_start;
+extern u8_t __usrtext_end;
// 按照 Memory map 标识可用的物理页
void
multiboot_memory_map_t mmap = map[i];
if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE) {
// 整数向上取整除法
- uintptr_t pg = map[i].addr_low + 0x0fffU;
+ ptr_t pg = map[i].addr_low + 0x0fffU;
pmm_mark_chunk_free(pg >> PG_SIZE_BITS,
map[i].len_low >> PG_SIZE_BITS);
}
// 将内核占据的页，包括前1MB，hhk_init 设为已占用
size_t pg_count = V2P(&__kernel_end) >> PG_SIZE_BITS;
- pmm_mark_chunk_occupied(KERNEL_PID, 0, pg_count, 0);
-
- size_t vga_buf_pgs = VGA_BUFFER_SIZE >> PG_SIZE_BITS;
+ pmm_mark_chunk_occupied(KERNEL_PID, 0, pg_count, PP_FGLOCKED);
- // 首先，标记VGA部分为已占用，并且锁定
- pmm_mark_chunk_occupied(
- KERNEL_PID, VGA_BUFFER_PADDR >> PG_SIZE_BITS, vga_buf_pgs, PP_FGLOCKED);
-
- // 重映射VGA文本缓冲区（以后会变成显存，i.e., framebuffer）
- for (size_t i = 0; i < vga_buf_pgs; i++) {
- vmm_set_mapping(PD_REFERENCED,
- VGA_BUFFER_VADDR + (i << PG_SIZE_BITS),
- VGA_BUFFER_PADDR + (i << PG_SIZE_BITS),
- PG_PREM_URW,
- VMAP_NULL);
+ for (ptr_t i = (ptr_t)&__usrtext_start; i < (ptr_t)&__usrtext_end;
+ i += PG_SIZE) {
+ vmm_set_mapping(VMS_SELF, i, V2P(i), PG_PREM_UR, VMAP_NULL);
}
- for (uintptr_t i = &__usrtext_start; i < &__usrtext_end; i += PG_SIZE) {
- vmm_set_mapping(PD_REFERENCED, i, V2P(i), PG_PREM_UR, VMAP_NULL);
+ // reserve higher half
+ for (size_t i = L1_INDEX(KERNEL_MM_BASE); i < 1023; i++) {
+ assert(vmm_set_mapping(VMS_SELF, i << 22, 0, 0, VMAP_NOMAP));
}
}
git://scm.lunaixsky.com / lunaix-os.git / blobdiff