X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/77e7b21f117eecd04bb31257ee68dfc1f425a47e..96e23fa3c6eabf8a6efebac24b740c5d4a2a1050:/lunaix-os/kernel/proc0.c?ds=sidebyside diff --git a/lunaix-os/kernel/proc0.c b/lunaix-os/kernel/proc0.c index 4cf0c82..32e1eff 100644 --- a/lunaix-os/kernel/proc0.c +++ b/lunaix-os/kernel/proc0.c @@ -1,5 +1,6 @@ -#include +#include #include +#include #include #include #include @@ -13,13 +14,16 @@ #include #include #include -#include +#include #include #include #include #include #include +#include + +#include #include @@ -42,7 +46,8 @@ __do_reserved_memory(int unlock); #define USE_DEMO // #define DEMO_SIGNAL -#define DEMO_READDIR +//#define DEMO_READDIR +#define DEMO_IOTEST extern void _pconsole_main(); @@ -56,9 +61,18 @@ _lxinit_main(); extern void _readdir_main(); +extern void +_iotest_main(); + void __USER__ __proc0_usr() { + // 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 stdout = open("/dev/tty", 0); + int stdin = dup2(stdout, 1); + pid_t p; if (!fork()) { _pconsole_main(); @@ -71,9 +85,12 @@ __proc0_usr() _signal_demo_main(); #elif defined DEMO_READDIR _readdir_main(); +#elif defined DEMO_IOTEST + _iotest_main(); #else _lxinit_main(); #endif + _exit(0); } waitpid(p, 0, 0); @@ -119,48 +136,16 @@ 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 */ -char test_sequence[] = "Once upon a time, in a magical land of Equestria. " - "There were two regal sisters who ruled together " - "and created harmony for all the land."; - -void -__test_disk_io() -{ - struct hba_port* port = ahci_get_port(0); - struct hba_device* dev = port->device; - char* buffer = vzalloc_dma(port->device->block_size); - strcpy(buffer, test_sequence); - kprintf("WRITE: %s\n", buffer); - int result; - - // 写入第一扇区 (LBA=0) - result = dev->ops.write_buffer(dev, 0, buffer, dev->block_size); - if (!result) { - kprintf(KWARN "fail to write: %x\n", dev->last_error); - } - - memset(buffer, 0, dev->block_size); - - // 读出我们刚刚写的内容! - result = dev->ops.read_buffer(dev, 0, buffer, dev->block_size); - kprintf(KDEBUG "%x, %x\n", port->regs[HBA_RPxIS], port->regs[HBA_RPxTFD]); - if (!result) { - kprintf(KWARN "fail to read: %x\n", dev->last_error); - } else { - kprint_hex(buffer, 256); - } - - vfree_dma(buffer); -} - void init_platform() { // 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(); - assert_msg(kalloc_init(), "Fail to initialize heap"); + // we are using no kalloc! + // assert_msg(kalloc_init(), "Fail to initialize heap"); + rtc_init(); acpi_init(_k_init_mb_info); apic_init(); ioapic_init(); @@ -168,17 +153,9 @@ init_platform() clock_init(); ps2_kbd_init(); pci_init(); + block_init(); ahci_init(); // ahci_list_device(); - - fsm_init(); - vfs_init(); - twifs_init(); - - vfs_mount("/", "twifs", -1); - - //__test_disk_io(); - // cake_stats(); syscall_install();