X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/77e7b21f117eecd04bb31257ee68dfc1f425a47e..f6ab9c9ababa2cf6e5c723b83ffb9362094054e8:/lunaix-os/kernel/proc0.c?ds=sidebyside diff --git a/lunaix-os/kernel/proc0.c b/lunaix-os/kernel/proc0.c index 4cf0c82..c7501af 100644 --- a/lunaix-os/kernel/proc0.c +++ b/lunaix-os/kernel/proc0.c @@ -1,86 +1,65 @@ -#include -#include +#include +#include +#include +#include #include +#include #include -#include #include #include #include #include #include -#include -#include +#include #include #include #include -#include +#include + +#include -#include -#include -#include -#include #include #include LOG_MODULE("PROC0") -extern void -_lxinit_main(); /* lxinit.c */ - 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 - -extern void -_pconsole_main(); - -extern void -_signal_demo_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 -_lxinit_main(); + if ((errno = vfs_mount("/mnt/lunaix-os", "iso9660", dev, 0))) { + kprintf(KERROR "fail to mount boot medium. (%d)", errno); + return 0; + } -extern void -_readdir_main(); + return 1; +} -void __USER__ -__proc0_usr() +int +exec_initd() { - pid_t p; - if (!fork()) { - _pconsole_main(); - } + int errno = 0; - if (!(p = fork())) { -#ifndef USE_DEMO - _exit(0); -#elif defined DEMO_SIGNAL - _signal_demo_main(); -#elif defined DEMO_READDIR - _readdir_main(); -#else - _lxinit_main(); -#endif + 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; } /** @@ -94,155 +73,44 @@ __proc0_usr() 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); - 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"); -} - -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 */ - -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); + if (!mount_bootmedium() || !exec_initd()) { + while (1) { + asm("hlt"); + } + // should not reach } - - 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"); - - acpi_init(_k_init_mb_info); - apic_init(); - ioapic_init(); - timer_init(SYS_TIMER_FREQUENCY_HZ); - clock_init(); - ps2_kbd_init(); - pci_init(); - ahci_init(); - // ahci_list_device(); - - fsm_init(); - vfs_init(); - twifs_init(); - - vfs_mount("/", "twifs", -1); + kprintf(KINFO "\033[11;0mLunaixOS (gcc v%s, %s)\033[39;49m\n", + __VERSION__, + __TIME__); - //__test_disk_io(); + twifs_register_plugins(); - // cake_stats(); + /* + * all device registering and loading must defered to here! + * due to limited stack size and partial scheduling context + */ + pci_load_devices(); - syscall_install(); + // debugger + serial_init(); + sdbg_init(); + // console console_start_flushing(); console_flush(); - - unlock_reserved_memory(); - - 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) { - 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 { - 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