fix: load x87 fpu default settings

[lunaix-os.git] / lunaix-os / kernel / k_init.c

diff --git a/lunaix-os/kernel/k_init.c b/lunaix-os/kernel/k_init.c
index ffc287ff37bb840d7bb2f8ecc8ff7368a7ab9211..ce4ac6aab8d44585c04e04a0e219da3283e68741 100644 (file)
--- a/lunaix-os/kernel/k_init.c
+++ b/lunaix-os/kernel/k_init.c
@@ -1,19 +1,18 @@
 #include <lunaix/common.h>
 #include <lunaix/tty/tty.h>
 
-#include <lunaix/clock.h>
+#include <lunaix/device.h>
+#include <lunaix/foptions.h>
+#include <lunaix/input.h>
 #include <lunaix/lxconsole.h>
-#include <lunaix/mm/kalloc.h>
+#include <lunaix/mm/mmio.h>
 #include <lunaix/mm/page.h>
 #include <lunaix/mm/pmm.h>
 #include <lunaix/mm/vmm.h>
 #include <lunaix/process.h>
 #include <lunaix/sched.h>
 #include <lunaix/spike.h>
-#include <lunaix/syslog.h>
-#include <lunaix/timer.h>
-
-#include <hal/rtc.h>
+#include <lunaix/types.h>
 
 #include <arch/x86/boot/multiboot.h>
 #include <arch/x86/idt.h>
@@ -22,9 +21,6 @@
 #include <klibc/stdio.h>
 #include <klibc/string.h>
 
-#include <stddef.h>
-#include <stdint.h>
-
 extern uint8_t __kernel_start;
 extern uint8_t __kernel_end;
 extern uint8_t __init_hhk_end;
@@ -38,8 +34,6 @@ x86_page_table* __kernel_ptd;
 
 struct proc_info tmp;
 
-LOG_MODULE("BOOT");
-
 extern void
 __proc0(); /* proc0.c */
 
@@ -57,16 +51,12 @@ _kernel_pre_init()
 
     pmm_init(MEM_1MB + (_k_init_mb_info->mem_upper << 10));
     vmm_init();
-    rtc_init();
 
     unsigned int map_size =
       _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 };
@@ -77,14 +67,28 @@ _kernel_pre_init()
 void
 _kernel_init()
 {
-    lxconsole_init();
-
+    int errno = 0;
     cake_init();
     valloc_init();
 
-    kprintf(KINFO "[MM] Allocated %d pages for stack start at %p\n",
-            KSTACK_SIZE >> PG_SIZE_BITS,
-            KSTACK_START);
+    tty_init(ioremap(VGA_FRAMEBUFFER, PG_SIZE));
+    tty_set_theme(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
+
+    vfs_init();
+    fsm_init();
+    input_init();
+
+    vfs_export_attributes();
+
+    if ((errno = vfs_mount_root("ramfs", NULL))) {
+        panickf("Fail to mount root. (errno=%d)", errno);
+    }
+
+    vfs_mount("/dev", "devfs", NULL, 0);
+    vfs_mount("/sys", "twifs", NULL, MNT_RO);
+    vfs_mount("/task", "taskfs", NULL, MNT_RO);
+
+    lxconsole_init();
 
     sched_init();
 
@@ -160,6 +164,11 @@ spawn_proc0()
                  : "i"(KSTACK_TOP), "i"(KCODE_SEG), "r"(proc0->intr_ctx.eip)
                  : "%ebx", "memory");
 
+    // 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);
 
@@ -193,22 +202,7 @@ setup_memory(multiboot_memory_map_t* map, size_t map_size)
 
     // 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;
-
-    // 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);
-    }
+    pmm_mark_chunk_occupied(KERNEL_PID, 0, pg_count, PP_FGLOCKED);
 
     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);