#include <lunaix/common.h>
#include <lunaix/tty/tty.h>
-#include <lunaix/clock.h>
-#include <lunaix/mm/kalloc.h>
+#include <lunaix/device.h>
+#include <lunaix/foptions.h>
+#include <lunaix/lxconsole.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>
#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;
struct proc_info tmp;
-LOG_MODULE("BOOT");
-
extern void
__proc0(); /* proc0.c */
pmm_init(MEM_1MB + (_k_init_mb_info->mem_upper << 10));
vmm_init();
- rtc_init();
- tty_init((void*)VGA_BUFFER_PADDR);
+ 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();
void
_kernel_init()
{
- kprintf("[MM] Mem: %d KiB, Extended Mem: %d KiB\n",
- _k_init_mb_info->mem_lower,
- _k_init_mb_info->mem_upper);
+ int errno = 0;
+ cake_init();
+ valloc_init();
- unsigned int map_size =
- _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
+ lxconsole_init();
- setup_memory((multiboot_memory_map_t*)_k_init_mb_info->mmap_addr, map_size);
+ vfs_init();
+ fsm_init();
- // 为内核创建一个专属栈空间。
- for (size_t i = 0; i < (KSTACK_SIZE >> PG_SIZE_BITS); i++) {
- vmm_alloc_page(KERNEL_PID,
- (void*)(KSTACK_START + (i << PG_SIZE_BITS)),
- NULL,
- PG_PREM_RW,
- 0);
+ if ((errno = vfs_mount_root("ramfs", NULL))) {
+ panickf("Fail to mount root. (errno=%d)", errno);
}
- kprintf(KINFO "[MM] Allocated %d pages for stack start at %p\n",
- KSTACK_SIZE >> PG_SIZE_BITS,
- KSTACK_START);
+
+ vfs_mount("/dev", "devfs", NULL, 0);
+ vfs_mount("/sys", "twifs", NULL, MNT_RO);
sched_init();
void
spawn_proc0()
{
- struct proc_info proc0;
+ struct proc_info* proc0 = alloc_process();
/**
* @brief
* 2. 将_kernel_post_init搬进proc0进程
* （_kernel_post_init已经更名为init_platform）
*
- * 目前的解决方案是两者都使用
+ * 目前的解决方案是2
*/
- init_proc(&proc0);
- proc0.intr_ctx = (isr_param){ .registers.esp = KSTACK_TOP - 20,
- .cs = KCODE_SEG,
- .eip = (void*)__proc0,
- .ss = KDATA_SEG,
- .eflags = cpu_reflags() };
-
- // 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！
- cpu_disable_interrupt();
- setup_proc_mem(&proc0, PD_REFERENCED);
-
- // Ok... 首先fork进我们的零号进程，而后由那里，我们fork进init进程。
- /*
- 这里是一些栈的设置，因为我们将切换到一个新的地址空间里，并且使用一个全新的栈。
- 让iret满意！
- */
- asm volatile("movl %%cr3, %%eax\n"
- "movl %%esp, %%ebx\n"
- "movl %0, %%cr3\n"
+ 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() };
+ 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！
+ // cpu_disable_interrupt();
+
+ /* Ok... 首先fork进我们的零号进程，而后由那里，我们fork进init进程。 */
+
+ // 把当前虚拟地址空间（内核）复制一份。
+ proc0->page_table = vmm_dup_vmspace(proc0->pid);
+
+ // 直接切换到新的拷贝，进行配置。
+ cpu_lcr3(proc0->page_table);
+
+ // 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,
+ 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 %%eax, %%cr3\n"
- "movl %%ebx, %%esp\n" ::"r"(proc0.page_table),
- "i"(KSTACK_TOP),
- "i"(KCODE_SEG),
- "r"(proc0.intr_ctx.eip)
- : "%eax", "%ebx", "memory");
+ "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");
// 向调度器注册进程。
- push_process(&proc0);
+ commit_process(proc0);
- // 由于时钟中断未就绪，我们需要手动通知调度器进行第一次调度。这里也会同时隐式地恢复我们的eflags.IF位
- schedule();
+ // 由于时钟中断与APIC未就绪，我们需要手动进行第一次调度。这里也会同时隐式地恢复我们的eflags.IF位
+ proc0->state = PS_RUNNING;
+ asm volatile("pushl %0\n"
+ "jmp switch_to\n" ::"r"(proc0));
/* Should not return */
assert_msg(0, "Unexpected Return");
}
+extern void __usrtext_start;
+extern void __usrtext_end;
+
// 按照 Memory map 标识可用的物理页
void
setup_memory(multiboot_memory_map_t* map, size_t map_size)
// First pass, to mark the physical pages
for (unsigned int i = 0; i < map_size; i++) {
multiboot_memory_map_t mmap = map[i];
- kprintf("[MM] Base: 0x%x, len: %u KiB, type: %u\n",
- map[i].addr_low,
- map[i].len_low >> 10,
- map[i].type);
if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE) {
// 整数向上取整除法
uintptr_t pg = map[i].addr_low + 0x0fffU;
pmm_mark_chunk_free(pg >> PG_SIZE_BITS,
map[i].len_low >> PG_SIZE_BITS);
- kprintf(KINFO "[MM] Freed %u pages start from 0x%x\n",
- map[i].len_low >> PG_SIZE_BITS,
- pg & ~0x0fffU);
}
}
// 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);
- kprintf(KINFO "[MM] Allocated %d pages for kernel.\n", pg_count);
size_t vga_buf_pgs = VGA_BUFFER_SIZE >> PG_SIZE_BITS;
- // 首先，标记VGA部分为已占用
+ // 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, 0);
+ 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_map_page(KERNEL_PID,
- (void*)(VGA_BUFFER_VADDR + (i << PG_SIZE_BITS)),
- (void*)(VGA_BUFFER_PADDR + (i << PG_SIZE_BITS)),
- PG_PREM_URW);
+ vmm_set_mapping(PD_REFERENCED,
+ VGA_BUFFER_VADDR + (i << PG_SIZE_BITS),
+ VGA_BUFFER_PADDR + (i << PG_SIZE_BITS),
+ PG_PREM_URW,
+ VMAP_NULL);
}
- // 更新VGA缓冲区位置至虚拟地址
- tty_set_buffer((void*)VGA_BUFFER_VADDR);
-
- kprintf(KINFO "[MM] Mapped VGA to %p.\n", VGA_BUFFER_VADDR);
+ 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);
+ }
}
git://scm.lunaixsky.com / lunaix-os.git / blobdiff