-#include <lunaix/common.h>
+#include <lunaix/types.h>
+#include <lunaix/block.h>
+#include <lunaix/boot_generic.h>
#include <lunaix/device.h>
#include <lunaix/foptions.h>
+#include <lunaix/fs/twifs.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/trace.h>
#include <lunaix/tty/tty.h>
-#include <lunaix/types.h>
+#include <lunaix/owloysius.h>
+#include <lunaix/pcontext.h>
+
+#include <hal/acpi/acpi.h>
+#include <hal/intc.h>
#include <sys/abi.h>
-#include <sys/boot/multiboot.h>
-#include <sys/interrupts.h>
+#include <sys/mm/mm_defs.h>
-#include <klibc/stdio.h>
+#include <klibc/strfmt.h>
#include <klibc/string.h>
-extern u8_t __kernel_start;
-extern u8_t __kernel_end;
-extern u8_t __init_hhk_end;
+void
+spawn_lunad();
-#define PP_KERN_SHARED (PP_FGSHARED | PP_TKERN)
+void
+kmem_init(struct boot_handoff* bhctx);
-// Set remotely by kernel/asm/x86/prologue.S
-multiboot_info_t* _k_init_mb_info;
+void
+kernel_bootstrap(struct boot_handoff* bhctx)
+{
+ vmm_init();
-x86_page_table* __kernel_ptd;
+ pmm_init(bhctx);
+ // now we can start reserving physical space
-extern void
-__proc0(); /* proc0.c */
+ /* Begin kernel bootstrapping sequence */
+ boot_begin(bhctx);
-void
-spawn_proc0();
+ tty_init(ioremap(0xB8000, PAGE_SIZE));
+
+ /* Setup kernel memory layout and services */
+ kmem_init(bhctx);
-void
-setup_memory(multiboot_memory_map_t* map, size_t map_size);
+ // FIXME this goes to hal/gfxa
+ tty_set_theme(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
-void
-_kernel_pre_init()
-{
- // interrupts
- exception_init();
+ boot_parse_cmdline(bhctx);
- // memory
- pmm_init(MEM_1MB + (_k_init_mb_info->mem_upper << 10));
- vmm_init();
+ /* Prepare stack trace environment */
+ trace_modksyms_init(bhctx);
- unsigned int map_size =
- _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
+ device_scan_drivers();
- setup_memory((multiboot_memory_map_t*)_k_init_mb_info->mmap_addr, map_size);
-}
+ invoke_init_function(on_earlyboot);
-void
-_kernel_init()
-{
- int errno = 0;
+ device_sysconf_load();
- // allocators
- cake_init();
- valloc_init();
+ /* Get intc online, this is the cornerstone when initing devices */
+ intc_init();
- sched_init();
+ clock_init();
+ timer_init();
- // crt
- tty_init(ioremap(VGA_FRAMEBUFFER, PG_SIZE));
- tty_set_theme(VGA_COLOR_WHITE, VGA_COLOR_BLACK);
+ /*
+ TODO autoload these init function that do not have dependency between
+ them
+ */
- // file system & device subsys
+ /* Let's get fs online as soon as possible, as things rely on them */
vfs_init();
fsm_init();
input_init();
+ block_init();
+ sched_init();
- vfs_export_attributes();
-
- lxconsole_init();
+ device_onboot_load();
- if ((errno = vfs_mount_root("ramfs", NULL))) {
- panickf("Fail to mount root. (errno=%d)", errno);
- }
+ /* the bare metal are now happy, let's get software over with */
- vfs_mount("/dev", "devfs", NULL, 0);
- vfs_mount("/sys", "twifs", NULL, MNT_RO);
- vfs_mount("/task", "taskfs", NULL, MNT_RO);
+ must_success(vfs_mount_root("ramfs", NULL));
+ must_success(vfs_mount("/dev", "devfs", NULL, 0));
+
+ invoke_init_function(on_boot);
- lxconsole_spawn_ttydev();
- device_init_builtin();
+ must_success(vfs_unmount("/dev"));
- syscall_install();
+ /* Finish up bootstrapping sequence, we are ready to spawn the root process
+ * and start geting into uspace
+ */
+ boot_end(bhctx);
+ boot_cleanup();
- spawn_proc0();
+ spawn_lunad();
}
+extern void
+lunad_main();
+
/**
- * @brief 创建并运行proc0进程
+ * @brief 创建并运行Lunaix守护进程
*
*/
void
-spawn_proc0()
+spawn_lunad()
{
- struct proc_info* proc0 = alloc_process();
-
- /**
- * @brief
- * 注意：这里和视频中说的不一样，属于我之后的一点微调。
- * 在视频中，spawn_proc0是在_kernel_post_init的末尾才调用的。并且是直接跳转到_proc0
- *
- * 但是我后来发现，上述的方法会产生竞态条件。这是因为spawn_proc0被调用的时候，时钟中断已经开启，
- * 而中断的产生会打乱栈的布局，从而使得下面的上下文设置代码产生未定义行为（Undefined
- * Behaviour）。 为了保险起见，有两种办法：
- * 1. 在创建proc0进程前关闭中断
- * 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2
- */
-
- 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_chvmspace(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++) {
- 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);
- }
-
- proc_init_transfer(proc0, KSTACK_TOP, (ptr_t)__proc0, 0);
-
- // 向调度器注册进程。
- 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
- proc0->state = PS_RUNNING;
- asm volatile("pushl %0\n"
- "jmp switch_to\n" ::"r"(proc0));
-
- /* Should not return */
- assert_msg(0, "Unexpected Return");
+ int has_error;
+ struct thread* kthread;
+
+ has_error = spawn_process(&kthread, (ptr_t)lunad_main, false);
+ assert_msg(!has_error, "failed to spawn lunad");
+
+ run(kthread);
+
+ fail("Unexpected Return");
}
-// 按照 Memory map 标识可用的物理页
void
-setup_memory(multiboot_memory_map_t* map, size_t map_size)
+kmem_init(struct boot_handoff* bhctx)
{
+ pte_t* ptep = mkptep_va(VMS_SELF, KERNEL_RESIDENT);
+ ptep = mkl0tep(ptep);
+
+ do {
+#if LnT_ENABLED(1)
+ assert(mkl1t(ptep++, 0, KERNEL_DATA));
+#elif LnT_ENABLED(2)
+ assert(mkl2t(ptep++, 0, KERNEL_DATA));
+#elif LnT_ENABLED(3)
+ assert(mkl3t(ptep++, 0, KERNEL_DATA));
+#else
+ assert(mklft(ptep++, 0, KERNEL_DATA));
+#endif
+ } while (ptep_vfn(ptep) < MAX_PTEN - 2);
- // First pass, to mark the physical pages
- for (unsigned int i = 0; i < map_size; i++) {
- multiboot_memory_map_t mmap = map[i];
- if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE) {
- // 整数向上取整除法
- 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, PP_FGLOCKED);
-
- // 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));
- }
+ // allocators
+ cake_init();
+ valloc_init();
}
git://scm.lunaixsky.com / lunaix-os.git / blobdiff