#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/input.h>
+#include <lunaix/isrm.h>
+#include <lunaix/lxconsole.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>
#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;
x86_page_table* __kernel_ptd;
-struct proc_info tmp;
-
-LOG_MODULE("BOOT");
-
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();
- rtc_init();
-
- tty_init((void*)VGA_BUFFER_PADDR);
- tty_set_theme(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
-
- __kernel_ptd = cpu_rcr3();
- tmp = (struct proc_info){ .page_table = __kernel_ptd };
+ unsigned int map_size =
+ _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
- __current = &tmp;
+ setup_memory((multiboot_memory_map_t*)_k_init_mb_info->mmap_addr, map_size);
}
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;
- unsigned int map_size =
- _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
+ // allocators
+ cake_init();
+ valloc_init();
- setup_memory((multiboot_memory_map_t*)_k_init_mb_info->mmap_addr, map_size);
+ sched_init();
- kprintf(KINFO "[MM] Allocated %d pages for stack start at %p\n",
- KSTACK_SIZE >> PG_SIZE_BITS,
- KSTACK_START);
+ // crt
+ tty_init(ioremap(VGA_FRAMEBUFFER, PG_SIZE));
+ tty_set_theme(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
- sched_init();
+ // file system & device subsys
+ vfs_init();
+ fsm_init();
+ input_init();
+
+ vfs_export_attributes();
+
+ lxconsole_init();
+
+ 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_spawn_ttydev();
+ device_init_builtin();
+
+ syscall_install();
spawn_proc0();
}
void
spawn_proc0()
{
- struct proc_info proc0;
+ struct proc_info* proc0 = alloc_process();
/**
* @brief
* 目前的解决方案是2
*/
- init_proc(&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() };
+ proc0->intr_ctx = (isr_param){ .registers = { .ds = KDATA_SEG,
+ .es = KDATA_SEG,
+ .fs = KDATA_SEG,
+ .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！
// 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);
+ 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);
+ 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,
+ 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 = (void*)__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。
- push_process(&proc0);
+ commit_process(proc0);
// 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
- struct proc_info* proc = get_process(0);
- assert_msg(proc, "fail to get proc0!");
-
- proc->state = PROC_RUNNING;
+ proc0->state = PS_RUNNING;
asm volatile("pushl %0\n"
- "jmp switch_to\n" ::"r"(proc));
+ "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;
+ pmm_mark_chunk_occupied(KERNEL_PID, 0, pg_count, PP_FGLOCKED);
- // 首先，标记VGA部分为已占用
- pmm_mark_chunk_occupied(
- KERNEL_PID, VGA_BUFFER_PADDR >> PG_SIZE_BITS, vga_buf_pgs, 0);
-
- // 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 (uintptr_t i = &__usrtext_start; i < &__usrtext_end; i += PG_SIZE) {
+ vmm_set_mapping(VMS_SELF, i, V2P(i), PG_PREM_UR, 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);
+ // 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