void __init x86_64_start_reservations(char *real_mode_data) { copy_bootdata(__va(real_mode_data)); memblock_reserve(__pa_symbol(&_text), __pa_symbol(&__bss_stop) - __pa_symbol(&_text)); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { /* Assume only end is not page aligned */ unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; unsigned long ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size); memblock_reserve(ramdisk_image, ramdisk_end - ramdisk_image); } #endif reserve_ebda_region(); /* * At this point everything still needed from the boot loader * or BIOS or kernel text should be early reserved or marked not * RAM in e820. All other memory is free game. */ start_kernel(); }
void __init x86_64_start_reservations(char *real_mode_data) { copy_bootdata(__va(real_mode_data)); /* &boot_params에 복사 */ /* text부터 bss까지의 커널 영역을 memblock에 예약한다. */ memblock_reserve(__pa_symbol(&_text), __pa_symbol(&__bss_stop) - __pa_symbol(&_text)); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ /* 같이 로드한 INITRD(init ramdisk) 영역도 예약한다. */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { /* Assume only end is not page aligned */ unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; unsigned long ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size); memblock_reserve(ramdisk_image, ramdisk_end - ramdisk_image); } #endif reserve_ebda_region(); /* EBDA 메모리 영역을 예약해놓았다. */ /* * At this point everything still needed from the boot loader * or BIOS or kernel text should be early reserved or marked not * RAM in e820. All other memory is free game. /* int 15h 서 예약된 부분과 커널/바이오스/부트로더 코드영역 * 외의 메모리 공간은 예약되어있지 않다. */ start_kernel(); }
void __init x86_64_start_reservations(char *real_mode_data) { copy_bootdata(__va(real_mode_data)); reserve_trampoline_memory(); reserve_early(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS"); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; unsigned long ramdisk_end = ramdisk_image + ramdisk_size; reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); } #endif reserve_ebda_region(); /* * At this point everything still needed from the boot loader * or BIOS or kernel text should be early reserved or marked not * RAM in e820. All other memory is free game. */ start_kernel(); }
void __init i386_start_kernel(void) { reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS"); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; u64 ramdisk_end = ramdisk_image + ramdisk_size; reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); } #endif reserve_early(init_pg_tables_start, init_pg_tables_end, "INIT_PG_TABLE"); reserve_ebda_region(); /* * At this point everything still needed from the boot loader * or BIOS or kernel text should be early reserved or marked not * RAM in e820. All other memory is free game. */ start_kernel(); }
static void __init i386_default_early_setup(void) { /* Initialize 32bit specific setup functions */ x86_init.resources.reserve_resources = i386_reserve_resources; x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc; reserve_ebda_region(); }
void __init x86_64_start_reservations(char *real_mode_data) { /* version is always not zero if it is copied */ if (!boot_params.hdr.version) copy_bootdata(__va(real_mode_data)); reserve_ebda_region(); start_kernel(); }
static void __init i386_default_early_setup(void) { /* Initialize 32bit specific setup functions */ if (is_initial_xendomain()) x86_init.resources.probe_roms = probe_roms; x86_init.resources.reserve_resources = i386_reserve_resources; #ifndef CONFIG_XEN x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc; reserve_ebda_region(); #endif }
void __init x86_64_start_reservations(char *real_mode_data) { /* version is always not zero if it is copied */ if (!boot_params.hdr.version) copy_bootdata(__va(real_mode_data)); reserve_ebda_region(); switch (boot_params.hdr.hardware_subarch) { case X86_SUBARCH_INTEL_MID: x86_intel_mid_early_setup(); break; default: break; } start_kernel(); }
void __init x86_64_start_kernel(char * real_mode_data) { int i; /* * Build-time sanity checks on the kernel image and module * area mappings. (these are purely build-time and produce no code) */ BUILD_BUG_ON(MODULES_VADDR < KERNEL_IMAGE_START); BUILD_BUG_ON(MODULES_VADDR-KERNEL_IMAGE_START < KERNEL_IMAGE_SIZE); BUILD_BUG_ON(MODULES_LEN + KERNEL_IMAGE_SIZE > 2*PUD_SIZE); BUILD_BUG_ON((KERNEL_IMAGE_START & ~PMD_MASK) != 0); BUILD_BUG_ON((MODULES_VADDR & ~PMD_MASK) != 0); BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL)); BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) == (__START_KERNEL & PGDIR_MASK))); /* clear bss before set_intr_gate with early_idt_handler */ clear_bss(); /* Make NULL pointers segfault */ zap_identity_mappings(); /* Cleanup the over mapped high alias */ cleanup_highmap(); for (i = 0; i < NUM_EXCEPTION_VECTORS; i++) { #ifdef CONFIG_EARLY_PRINTK set_intr_gate(i, &early_idt_handlers[i]); #else set_intr_gate(i, early_idt_handler); #endif } load_idt((const struct desc_ptr *)&idt_descr); early_printk("Kernel alive\n"); for (i = 0; i < NR_CPUS; i++) cpu_pda(i) = &boot_cpu_pda[i]; pda_init(0); copy_bootdata(__va(real_mode_data)); reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS"); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; unsigned long ramdisk_end = ramdisk_image + ramdisk_size; reserve_early(ramdisk_image, ramdisk_end, "RAMDISK"); } #endif reserve_ebda_region(); reserve_setup_data(); /* * At this point everything still needed from the boot loader * or BIOS or kernel text should be early reserved or marked not * RAM in e820. All other memory is free game. */ start_kernel(); }