feat: serial device interfacing

[lunaix-os.git] / lunaix-os / kernel / proc0.c

diff --git a/lunaix-os/kernel/proc0.c b/lunaix-os/kernel/proc0.c
index 1e54e59e6d9ea9531470907bd481f5d4f88ec762..93cc0207ef4819c648908eb2337e7d746b0ccee3 100644 (file)
--- a/lunaix-os/kernel/proc0.c
+++ b/lunaix-os/kernel/proc0.c
@@ -1,117 +1,63 @@
 #include <lunaix/block.h>
 #include <lunaix/block.h>

-#include <lunaix/common.h>
-#include <lunaix/fctrl.h>
+#include <lunaix/boot_generic.h>
+#include <lunaix/exec.h>
+#include <lunaix/foptions.h>

 #include <lunaix/fs.h>
 #include <lunaix/fs.h>

+#include <lunaix/fs/probe_boot.h>

 #include <lunaix/fs/twifs.h>
 #include <lunaix/fs/twifs.h>

-#include <lunaix/lunistd.h>

 #include <lunaix/lxconsole.h>
 #include <lunaix/mm/cake.h>
 #include <lunaix/mm/pmm.h>
 #include <lunaix/mm/valloc.h>
 #include <lunaix/mm/vmm.h>
 #include <lunaix/lxconsole.h>
 #include <lunaix/mm/cake.h>
 #include <lunaix/mm/pmm.h>
 #include <lunaix/mm/valloc.h>
 #include <lunaix/mm/vmm.h>

-#include <lunaix/peripheral/ps2kbd.h>

 #include <lunaix/peripheral/serial.h>
 #include <lunaix/peripheral/serial.h>

-#include <lunaix/proc.h>

 #include <lunaix/spike.h>
 #include <lunaix/syscall.h>
 #include <lunaix/syslog.h>
 #include <lunaix/types.h>
 #include <lunaix/spike.h>
 #include <lunaix/syscall.h>
 #include <lunaix/syslog.h>
 #include <lunaix/types.h>

-#include <sdbg/protocol.h>
-
-#include <hal/acpi/acpi.h>
-#include <hal/ahci/ahci.h>
-#include <hal/apic.h>
-#include <hal/ioapic.h>
-#include <hal/pci.h>
-#include <hal/rtc.h>

 
 

-#include <arch/x86/boot/multiboot.h>
+#include <sdbg/protocol.h>

 
 #include <klibc/string.h>
 
 
 #include <klibc/string.h>
 

-#include <ulibc/stdio.h>
-

 LOG_MODULE("PROC0")
 
 LOG_MODULE("PROC0")
 

-extern void
-_lxinit_main(); /* lxinit.c */
-

 void
 init_platform();
 
 void
 init_platform();
 

-void
-lock_reserved_memory();
-
-void
-unlock_reserved_memory();
-
-void
-__do_reserved_memory(int unlock);
-
-#define USE_DEMO
-// #define DEMO_SIGNAL
-// #define DEMO_READDIR
-// #define DEMO_IOTEST
-// #define DEMO_INPUT_TEST
-#define DEMO_SIMPLE_SH
-
-extern void
-_pconsole_main();
-
-extern void
-_signal_demo_main();
-
-extern void
-_lxinit_main();
-
-extern void
-_readdir_main();
-
-extern void
-_iotest_main();
+int
+mount_bootmedium()
+{
+    struct v_dnode* dnode;
+    int errno = 0;
+    struct device* dev = probe_boot_medium();
+    if (!dev) {
+        kprintf(KERROR "fail to acquire device. (%d)", errno);
+        return 0;
+    }

 
 

-extern void
-input_test();
+    if ((errno = vfs_mount("/mnt/lunaix-os", "iso9660", dev, 0))) {
+        kprintf(KERROR "fail to mount boot medium. (%d)", errno);
+        return 0;
+    }

 
 

-extern void
-sh_main();
+    return 1;
+}

 
 

-void __USER__
-__proc0_usr()
+int
+exec_initd()

 {
 {

-    // 打开tty设备(控制台)，作为标准输入输出。
-    //  tty设备属于序列设备（Sequential Device），该类型设备的上层读写
-    //  无须经过Lunaix的缓存层，而是直接下发到底层驱动。（不受FO_DIRECT的影响）
-    int fdstdout = open("/dev/tty", 0);
-    int fdstdin = dup2(stdout, 1);
-
-    pid_t p;
+    int errno = 0;

 
 

-    if (!(p = fork())) {
-#ifndef USE_DEMO
-        _exit(0);
-#elif defined DEMO_SIGNAL
-        _signal_demo_main();
-#elif defined DEMO_READDIR
-        _readdir_main();
-#elif defined DEMO_IOTEST
-        _iotest_main();
-#elif defined DEMO_INPUT_TEST
-        input_test();
-#elif defined DEMO_SIMPLE_SH
-        sh_main();
-#else
-        _lxinit_main();
-#endif
-        printf("==== test end ====\n");
-        _exit(0);
+    if ((errno = exec_kexecve("/mnt/lunaix-os/usr/bin/init", NULL, NULL))) {
+        goto fail;

     }
 
     }
 

-    waitpid(p, 0, 0);
+    fail("should not reach");

 
 

-    while (1) {
-        yield();
-    }
+fail:
+    kprintf(KERROR "fail to load initd. (%d)", errno);
+    return 0;

 }
 
 /**
 }
 
 /**


@@ -125,136 +71,39 @@ __proc0_usr()
 void
 __proc0()
 {
 void
 __proc0()
 {

+    /*
+     * We must defer boot code/data cleaning to here, after we successfully
+     * escape that area
+     */
+    boot_cleanup();
+

     init_platform();
 
     init_proc_user_space(__current);
 
     init_platform();
 
     init_proc_user_space(__current);
 

-    // user space
-    asm volatile("movw %0, %%ax\n"
-                 "movw %%ax, %%es\n"
-                 "movw %%ax, %%ds\n"
-                 "movw %%ax, %%fs\n"
-                 "movw %%ax, %%gs\n"
-                 "pushl %0\n"
-                 "pushl %1\n"
-                 "pushl %2\n"
-                 "pushl %3\n"
-                 "retf" ::"i"(UDATA_SEG),
-                 "i"(USTACK_TOP & ~0xf),
-                 "i"(UCODE_SEG),
-                 "r"(__proc0_usr)
-                 : "eax", "memory");
+    if (!mount_bootmedium() || !exec_initd()) {
+        while (1) {
+            asm("hlt");
+        }
+        // should not reach
+    }

 }
 
 }
 

-extern uint8_t __kernel_start;            /* link/linker.ld */
-extern uint8_t __kernel_end;              /* link/linker.ld */
-extern uint8_t __init_hhk_end;            /* link/linker.ld */
-extern multiboot_info_t* _k_init_mb_info; /* k_init.c */
-

 void
 init_platform()
 {
 void
 init_platform()
 {

-    kprintf(KINFO "\033[11;0mLunaixOS \033[39;49m\n");
-
-    // 锁定所有系统预留页（内存映射IO，ACPI之类的），并且进行1:1映射
-    lock_reserved_memory();
-
-    // firmware
-    acpi_init(_k_init_mb_info);
+    kprintf(KINFO "\033[11;0mLunaixOS (gcc v%s, %s)\033[39;49m\n",
+            __VERSION__,
+            __TIME__);

 
 

-    // die
-    apic_init();
-    ioapic_init();
+    device_poststage();

 
 

-    // debugger
-    serial_init();
-    sdbg_init();
+    twifs_register_plugins();

 
 

-    // timers & clock
-    rtc_init();
-    timer_init(SYS_TIMER_FREQUENCY_HZ);
-    clock_init();
-
-    // peripherals & chipset features
-    ps2_kbd_init();
-    block_init();
-    ahci_init();
-
-    pci_init();
+    // FIXME Re-design needed!!
+    // sdbg_init();

 
     // console
     console_start_flushing();
     console_flush();
 
     // console
     console_start_flushing();
     console_flush();

-
-    // expose cake allocator states to vfs
-    cake_export();
-
-    unlock_reserved_memory();
-
-    // clean up
-    for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
-        vmm_del_mapping(PD_REFERENCED, (void*)i);
-        pmm_free_page(KERNEL_PID, (void*)i);
-    }
-}
-
-void
-lock_reserved_memory()
-{
-    __do_reserved_memory(0);
-}
-
-void
-unlock_reserved_memory()
-{
-    __do_reserved_memory(1);
-}
-
-void
-__do_reserved_memory(int unlock)
-{
-    multiboot_memory_map_t* mmaps = _k_init_mb_info->mmap_addr;
-    size_t map_size =
-      _k_init_mb_info->mmap_length / sizeof(multiboot_memory_map_t);
-    // v_mapping mapping;
-    for (unsigned int i = 0; i < map_size; i++) {
-        multiboot_memory_map_t mmap = mmaps[i];
-        uint8_t* pa = PG_ALIGN(mmap.addr_low);
-        if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE || pa <= MEM_4MB) {
-            // Don't fuck up our kernel code or any free area!
-            continue;
-        }
-        size_t pg_num = CEIL(mmap.len_low, PG_SIZE_BITS);
-        size_t j = 0;
-        if (!unlock) {
-            kprintf("mem: freeze: %p..%p type=%x\n",
-                    pa,
-                    pa + pg_num * PG_SIZE,
-                    mmap.type);
-            for (; j < pg_num; j++) {
-                uintptr_t _pa = pa + (j << PG_SIZE_BITS);
-                if (_pa >= KERNEL_MM_BASE) {
-                    // Don't fuck up our kernel space!
-                    break;
-                }
-                vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_NULL);
-                pmm_mark_page_occupied(
-                  KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
-            }
-            // Save the progress for later unmapping.
-            mmaps[i].len_low = j * PG_SIZE;
-        } else {
-            kprintf("mem: reclaim: %p..%p type=%x\n",
-                    pa,
-                    pa + pg_num * PG_SIZE,
-                    mmap.type);
-            for (; j < pg_num; j++) {
-                uintptr_t _pa = pa + (j << PG_SIZE_BITS);
-                vmm_del_mapping(PD_REFERENCED, _pa);
-                if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
-                    pmm_mark_page_free(_pa >> PG_SIZE_BITS);
-                }
-            }
-        }
-    }

 }
\ No newline at end of file
 }
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