X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/1f37d39e678168ffc089bcde6f9ea203c4763550..bb7ce16533fb6c1384775dea6e1150e74c229daf:/lunaix-os/kernel/proc0.c diff --git a/lunaix-os/kernel/proc0.c b/lunaix-os/kernel/proc0.c index cece368..bdc23ce 100644 --- a/lunaix-os/kernel/proc0.c +++ b/lunaix-os/kernel/proc0.c @@ -1,19 +1,33 @@ -#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") @@ -32,13 +46,70 @@ 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(); + +extern void +input_test(); + +extern void +sh_main(); + void __USER__ __proc0_usr() { - if (!fork()) { - asm("jmp _lxinit_main"); + // 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; + // if (!fork()) { + // _pconsole_main(); + // } + + 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); } + waitpid(p, 0, 0); + while (1) { yield(); } @@ -83,31 +154,24 @@ extern multiboot_info_t* _k_init_mb_info; /* k_init.c */ void init_platform() { - assert_msg(kalloc_init(), "Fail to initialize heap"); - // 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(); + rtc_init(); acpi_init(_k_init_mb_info); - uintptr_t ioapic_addr = acpi_get_context()->madt.ioapic->ioapic_addr; - pmm_mark_page_occupied( - KERNEL_PID, FLOOR(__APIC_BASE_PADDR, PG_SIZE_BITS), 0); - pmm_mark_page_occupied(KERNEL_PID, FLOOR(ioapic_addr, PG_SIZE_BITS), 0); - - vmm_set_mapping( - PD_REFERENCED, MMIO_APIC, __APIC_BASE_PADDR, PG_PREM_RW, VMAP_NULL); - vmm_set_mapping( - PD_REFERENCED, MMIO_IOAPIC, ioapic_addr, PG_PREM_RW, VMAP_NULL); - apic_init(); ioapic_init(); timer_init(SYS_TIMER_FREQUENCY_HZ); clock_init(); ps2_kbd_init(); + pci_init(); + block_init(); + ahci_init(); syscall_install(); console_start_flushing(); + console_flush(); unlock_reserved_memory(); @@ -115,6 +179,10 @@ init_platform() vmm_del_mapping(PD_REFERENCED, (void*)i); pmm_free_page(KERNEL_PID, (void*)i); } + + for (size_t i = L1_INDEX(KERNEL_MM_BASE); i < 1023; i++) { + vmm_set_mapping(PD_REFERENCED, i << 22, 0, 0, VMAP_NOMAP); + } } void @@ -153,6 +221,8 @@ __do_reserved_memory(int unlock) 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; @@ -160,6 +230,9 @@ __do_reserved_memory(int unlock) 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); + } } } }