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самая большая тема в мире/**linux/init/main.c**Copyright(C)1991,1992LinusTorvalds**GK2/5/95-ChangedtosupportmountingrootfsviaNFS*Addedinitrd&change_root:WernerAlmesberger&HansLermen,Feb'96*Moanearlyifgccisold,avoidingboguskernels-PaulGortmaker,May'96*Simplifiedstartingofinit:Michae lA.Griffith */#define__KERNEL_SYSCALLS__#include #include #include #include #include #include #include #include #include #include #include #include #include #ifdefCONFIG_PCI#include #endif#ifdefCONFIG_DIO#include #endif#ifdefCONFIG_ZORRO#include #endif#ifdefCONFIG_MTRR#include #endif#ifdefCONFIG_APM#include #endif/**Versionsofgccolderthanthatlistedbelowmayactuallycompile*andlinkokay,buttheendproductcanhavesubtleruntimebugs.*Toavoidassociatedbogusbugreports,weflatlyrefusetocompile*withagccthatisknowntobetoo oldfromtheverybeginning.*/#if__GNUC__<2||(__GNUC__==2&&__GNUC_MINOR__<6)#errorsorry,yourGCCistooold.Itbuildsincorrectkernels.#endifexternchar_stext,_etext;externchar*linux_banner;externintconsole_loglevel;staticintinit(void*);externintbdflush(void*);externi ntkswapd(void*);externvoidkswapd_setup(void);externvoidinit_IRQ(void);externvoidinit_modules(void);externlongconsole_init(long,long);externvoidsock_init(void);externvoiduidcache_init(void);externvoidmca_init(void);externvoidsbus_init(void);externvoidpowerma c_init(void);externvoidsysctl_init(void);externvoidfilescache_init(void);externvoidsignals_init(void);externvoiddevice_setup(void);externvoidbinfmt_setup(void);externvoidfree_initmem(void);externvoidfilesystem_setup(void);#ifdefCONFIG_ARCH_ACORNexternvoidec ard_init(void);#endifexternvoidsmp_setup(char*str,int*ints);#ifdef__i386__externvoidioapic_pirq_setup(char*str,int*ints);externvoidioapic_setup(char*str,int*ints);#endifexternvoidno_scroll(char*str,int*ints);externvoidkbd_reset_setup(char*str,int*ints);exte rnvoidpanic_setup(char*str,int*ints);externvoidbmouse_setup(char*str,int*ints);externvoidmsmouse_setup(char*str,int*ints);externvoidconsole_setup(char*str,int*ints);#ifdefCONFIG_PRINTERexternvoidlp_setup(char*str,int*ints);#endif#ifdefCONFIG_JOY_AMIGAextern voidjs_am_setup(char*str,int*ints);#endif#ifdefCONFIG_JOY_ANALOGexternvoidjs_an_setup(char*str,int*ints);#endif#ifdefCONFIG_JOY_ASSASINexternvoidjs_as_setup(char*str,int*ints);#endif#ifdefCONFIG_JOY_CONSOLEexternvoidjs_console_setup(char*str,int*ints);#endi f#ifdefCONFIG_JOY_DB9externvoidjs_db9_setup(char*str,int*ints);#endif#ifdefCONFIG_JOY_TURBOGRAFXexternvoidjs_tg_setup(char*str,int*ints);#endif#ifdefCONFIG_JOY_LIGHTNINGexternvoidjs_l4_setup(char*str,int*ints);#endifexternvoideth_setup(char*str,int*ints);#i fdefCONFIG_ARCNET_COM20020externvoidcom20020_setup(char*str,int*ints);#endif#ifdefCONFIG_ARCNET_RIM_Iexternvoidarcrimi_setup(char*str,int*ints);#endif#ifdefCONFIG_ARCNET_COM90xxIOexternvoidcom90io_setup(char*str,int*ints);#endif#ifdefCONFIG_ARCNET_COM90xxex ternvoidcom90xx_setup(char*str,int*ints);#endif#ifdefCONFIG_DECNETexternvoiddecnet_setup(char*str,int*ints);#endif#ifdefCONFIG_BLK_DEV_XDexternvoidxd_setup(char*str,int*ints);externvoidxd_manual_geo_init(char*str,int*ints);#endif#ifdefCONFIG_BLK_DEV_IDEexte rnvoidide_setup(char*);#endif#ifdefCONFIG_PARIDE_PDexternvoidpd_setup(char*str,int*ints);#endif#ifdefCONFIG_PARIDE_PFexternvoidpf_setup(char*str,int*ints);#endif#ifdefCONFIG_PARIDE_PTexternvoidpt_setup(char*str,int*ints);#endif#ifdefCONFIG_PARIDE_PGexternvo idpg_setup(char*str,int*ints);#endif#ifdefCONFIG_PARIDE_PCDexternvoidpcd_setup(char*str,int*ints);#endifexternvoidfloppy_setup(char*str,int*ints);externvoidst_setup(char*str,int*ints);externvoidst0x_setup(char*str,int*ints);externvoidadvansys_setup(char*str ,int*ints);externvoidtmc8xx_setup(char*str,int*ints);externvoidt128_setup(char*str,int*ints);externvoidpas16_setup(char*str,int*ints);externvoidgeneric_NCR5380_setup(char*str,int*intr);externvoidgeneric_NCR53C400_setup(char*str,int*intr);externvoidgeneric_N CR53C400A_setup(char*str,int*intr);externvoidgeneric_DTC3181E_setup(char*str,int*intr);externvoidaha152x_setup(char*str,int*ints);externvoidaha1542_setup(char*str,int*ints);externvoidgdth_setup(char*str,int*ints);externvoidaic7xxx_setup(char*str,int*ints);e xternvoidAM53C974_setup(char*str,int*ints);externvoidBusLogic_Setup(char*str,int*ints);externvoidncr53c8xx_setup(char*str,int*ints);externvoideata2x_setup(char*str,int*ints);externvoidu14_34f_setup(char*str,int*ints);externvoidfdomain_setup(char*str,int*int s);externvoidibmmca_scsi_setup(char*str,int*ints);externvoidin2000_setup(char*str,int*ints);externvoidNCR53c406a_setup(char*str,int*ints);externvoidwd7000_setup(char*str,int*ints);externvoiddc390_setup(char*str,int*ints);externvoidscsi_luns_setup(char*str,i nt*ints);externvoidscsi_logging_setup(char*str,int*ints);externvoidsound_setup(char*str,int*ints);externvoidreboot_setup(char*str,int*ints);externvoidvideo_setup(char*str,int*ints);#ifdefCONFIG_CDU31Aexternvoidcdu31a_setup(char*str,int*ints);#endifCONFIG_CD U31A#ifdefCONFIG_BLK_DEV_PS2externvoided_setup(char*str,int*ints);externvoidtp720_setup(char*str,int*ints);#endifCONFIG_BLK_DEV_PS2#ifdefCONFIG_MCDexternvoidmcd_setup(char*str,int*ints);#endifCONFIG_MCD#ifdefCONFIG_MCDXexternvoidmcdx_setup(char*str,int*ints );#endifCONFIG_MCDX#ifdefCONFIG_SBPCDexternvoidsbpcd_setup(char*str,int*ints);#endifCONFIG_SBPCD#ifdefCONFIG_AZTCDexternvoidaztcd_setup(char*str,int*ints);#endifCONFIG_AZTCD#ifdefCONFIG_CDU535externvoidsonycd535_setup(char*str,int*ints);#endifCONFIG_CDU535# ifdefCONFIG_GSCDexternvoidgscd_setup(char*str,int*ints);#endifCONFIG_GSCD#ifdefCONFIG_CM206externvoidcm206_setup(char*str,int*ints);#endifCONFIG_CM206#ifdefCONFIG_OPTCDexternvoidoptcd_setup(char*str,int*ints);#endifCONFIG_OPTCD#ifdefCONFIG_SJCDexternvoidsjc d_setup(char*str,int*ints);#endifCONFIG_SJCD#ifdefCONFIG_ISP16_CDIexternvoidisp16_setup(char*str,int*ints);#endifCONFIG_ISP16_CDI#ifdefCONFIG_BLK_DEV_RAMstaticvoidramdisk_start_setup(char*str,int*ints);staticvoidload_ramdisk(char*str,int*ints);staticvoidpro mpt_ramdisk(char*str,int*ints);staticvoidramdisk_size(char*str,int*ints);#ifdefCONFIG_BLK_DEV_INITRDstaticvoidno_initrd(char*s,int*ints);#endif#endifCONFIG_BLK_DEV_RAM#ifdefCONFIG_ISDN_DRV_ICNexternvoidicn_setup(char*str,int*ints);#endif#ifdefCONFIG_ISDN_DR V_HISAXexternvoidHiSax_setup(char*str,int*ints);#endif#ifdefCONFIG_DIGIEPCAexternvoidepca_setup(char*str,int*ints);#endif#ifdefCONFIG_ISDN_DRV_PCBITexternvoidpcbit_setup(char*str,int*ints);#endif#ifdefCONFIG_ATARIMOUSEexternvoidatari_mouse_setup(char*str,in t*ints);#endif#ifdefCONFIG_DMASOUNDexternvoiddmasound_setup(char*str,int*ints);#endif#ifdefCONFIG_ATARI_SCSIexternvoidatari_scsi_setup(char*str,int*ints);#endifexternvoidstram_swap_setup(char*str,int*ints);externvoidwd33c93_setup(char*str,int*ints);externvo idgvp11_setup(char*str,int*ints);externvoidncr53c7xx_setup(char*str,int*ints);#ifdefCONFIG_MAC_SCSIexternvoidmac_scsi_setup(char*str,int*ints);#endif#ifdefCONFIG_CYCLADESexternvoidcy_setup(char*str,int*ints);#endif#ifdefCONFIG_DIGIexternvoidpcxx_setup(char* str,int*ints);#endif#ifdefCONFIG_RISCOM8externvoidriscom8_setup(char*str,int*ints);#endif#ifdefCONFIG_SPECIALIXexternvoidspecialix_setup(char*str,int*ints);#endif#ifdefCONFIG_DMASCCexternvoiddmascc_setup(char*str,int*ints);#endif#ifdefCONFIG_BAYCOM_PARexter nvoidbaycom_par_setup(char*str,int*ints);#endif#ifdefCONFIG_BAYCOM_SER_FDXexternvoidbaycom_ser_fdx_setup(char*str,int*ints);#endif#ifdefCONFIG_BAYCOM_SER_HDXexternvoidbaycom_ser_hdx_setup(char*str,int*ints);#endif#ifdefCONFIG_SOUNDMODEMexternvoidsm_setup(ch ar*str,int*ints);#endif#ifdefCONFIG_ADBMOUSEexternvoidadb_mouse_setup(char*str,int*ints);#endif#ifdefCONFIG_WDTexternvoidwdt_setup(char*str,int*ints);#endif#ifdefCONFIG_PARPORTexternvoidparport_setup(char*str,int*ints);#endif#ifdefCONFIG_PLIPexternvoidplip_ setup(char*str,int*ints);#endif#ifdefCONFIG_HFMODEMexternvoidhfmodem_setup(char*str,int*ints);#endif#ifdefCONFIG_IP_PNPexternvoidip_auto_config_setup(char*str,int*ints);#endif#ifdefCONFIG_ROOT_NFSexternvoidnfs_root_setup(char*str,int*ints);#endif#ifdefCONFI G_FTAPEexternvoidftape_setup(char*str,int*ints);#endif#ifdefCONFIG_MDA_CONSOLEexternvoidmdacon_setup(char*str,int*ints);#endif#ifdefCONFIG_LTPCexternvoidltpc_setup(char*str,int*ints);#endif#ifdefined(CONFIG_SYSVIPC)externvoidipc_init(void);#endif#ifdefined( CONFIG_QUOTA)externvoiddquot_init_hash(void);#endif#ifdefCONFIG_MD_BOOTexternvoidmd_setup(char*str,int*ints)__init;#endif/**Bootcommand-linearguments*/#defineMAX_INIT_ARGS8#defineMAX_INIT_ENVS8externvoidtime_init(void);staticunsignedlongmemory_start=0;stati cunsignedlongmemory_end=0;introws,cols;#ifdefCONFIG_BLK_DEV_RAMexternintrd_doload;/*1=loadramdisk,0=don'tload*/externintrd_prompt;/*1=promptforramdisk,0=don'tprompt*/externintrd_size;/*Sizeoftheramdisk(s)*/externintrd_image_start;/*startingblock#ofimage*/#i fdefCONFIG_BLK_DEV_INITRDkdev_treal_root_dev;#endif#endifintroot_mountflags=MS_RDONLY;char*execute_command=NULL;staticchar*argv_init[MAX_INIT_ARGS+2]={"init",NULL,};staticchar*envp_init[MAX_INIT_ENVS+2]={"HOME=/","TERM=linux",NULL,};char*get_options(char*st r,int*ints){char*cur=str;inti=1;while(cur&&(*cur=='-'||isdigit(*cur))&&i 0)prof_shift=(unsign edlong)ints[1];elseprof_shift=2;}staticstructdev_name_struct{constchar*name;constintnum;}root_dev_names[]__initdata={#ifdefCONFIG_ROOT_NFS{"nfs",0x00ff},#endif#ifdefCONFIG_BLK_DEV_IDE{"hda",0x0300},{"hdb",0x0340},{"hdc",0x1600},{"hdd",0x1640},{"hde",0x2100} ,{"hdf",0x2140},{"hdg",0x2200},{"hdh",0x2240},{"hdi",0x3800},{"hdj",0x3840},{"hdk",0x3900},{"hdl",0x3940},#endif#ifdefCONFIG_BLK_DEV_SD{"sda",0x0800},{"sdb",0x0810},{"sdc",0x0820},{"sdd",0x0830},{"sde",0x0840},{"sdf",0x0850},{"sdg",0x0860},{"sdh",0x0870},{" sdi",0x0880},{"sdj",0x0890},{"sdk",0x08a0},{"sdl",0x08b0},{"sdm",0x08c0},{"sdn",0x08d0},{"sdo",0x08e0},{"sdp",0x08f0},#endif#ifdefCONFIG_ATARI_ACSI{"ada",0x1c00},{"adb",0x1c10},{"adc",0x1c20},{"add",0x1c30},{"ade",0x1c40},#endif#ifdefCONFIG_BLK_DEV_FD{"fd", 0x0200},#endif#ifdefCONFIG_MD_BOOT{"md",0x0900},#endif#ifdefCONFIG_BLK_DEV_XD{"xda",0x0d00},{"xdb",0x0d40},#endif#ifdefCONFIG_BLK_DEV_RAM{"ram",0x0100},#endif#ifdefCONFIG_BLK_DEV_SR{"scd",0x0b00},#endif#ifdefCONFIG_MCD{"mcd",0x1700},#endif#ifdefCONFIG_CDU53 5{"cdu535",0x1800},{"sonycd",0x1800},#endif#ifdefCONFIG_AZTCD{"aztcd",0x1d00},#endif#ifdefCONFIG_CM206{"cm206cd",0x2000},#endif#ifdefCONFIG_GSCD{"gscd",0x1000},#endif#ifdefCONFIG_SBPCD{"sbpcd",0x1900},#endif#ifdefCONFIG_BLK_DEV_PS2{"eda",0x2400},{"edb",0x24 40},#endif#ifdefCONFIG_PARIDE_PD{"pda",0x2d00},{"pdb",0x2d10},{"pdc",0x2d20},{"pdd",0x2d30},#endif#ifdefCONFIG_PARIDE_PCD{"pcd",0x2e00},#endif#ifdefCONFIG_PARIDE_PF{"pf",0x2f00},#endif#ifCONFIG_APBLOCK{"apblock",APBLOCK_MAJOR name);if(strncmp(line,dev->name,len)==0){line+=len;base=dev->num;break;}dev++; }while(dev->name);}returnto_kdev_t(base+simple_strtoul(line,NULL,base?10:16));}staticvoid__initroot_dev_setup(char*line,int*num){ROOT_DEV=name_to_kdev_t(line);}/**Listofkernelcommandlineparameters.Thefirsttablelistsparameters*whicharesubjecttovaluesparsing( leadingnumbersareconvertedto*anarrayofintsandchoppedoffthestring),thesecondtablecontains*thefewexceptionswhichobeytheirownsyntaxrules.*/structkernel_param{constchar*str;void(*setup_func)(char*,int*);};staticstructkernel_paramcooked_params[]__initdata={/*FIX ME:makePNPjustbecomereserve_setup*/#ifndefCONFIG_KERNEL_PNP_RESOURCE{"reserve=",reserve_setup},#else{"reserve=",pnp_reserve_setup},#endif{"profile=",profile_setup},#ifdef__SMP__{"nosmp",smp_setup},{"maxcpus=",smp_setup},#ifdefCONFIG_X86_IO_APIC{"noapic",ioa pic_setup},{"pirq=",ioapic_pirq_setup},#endif#endif#ifdefCONFIG_BLK_DEV_RAM{"ramdisk_start=",ramdisk_start_setup},{"load_ramdisk=",load_ramdisk},{"prompt_ramdisk=",prompt_ramdisk},{"ramdisk=",ramdisk_size},{"ramdisk_size=",ramdisk_size},#ifdefCONFIG_BLK_DEV _INITRD{"noinitrd",no_initrd},#endif#endif#ifdefCONFIG_FB{"video=",video_setup},#endif{"panic=",panic_setup},{"console=",console_setup},#ifdefCONFIG_VGA_CONSOLE{"no-scroll",no_scroll},#endif#ifdefCONFIG_MDA_CONSOLE{"mdacon=",mdacon_setup},#endif#ifdefCONFIG _VT{"kbd-reset",kbd_reset_setup},#endif#ifdefCONFIG_BUGi386{"no-hlt",no_halt},{"no387",no_387},{"reboot=",reboot_setup},#endif#ifdefCONFIG_INET{"ether=",eth_setup},#endif#ifdefCONFIG_ARCNET_COM20020{"com20020=",com20020_setup},#endif#ifdefCONFIG_ARCNET_RIM_ I{"arcrimi=",arcrimi_setup},#endif#ifdefCONFIG_ARCNET_COM90xxIO{"com90io=",com90io_setup},#endif#ifdefCONFIG_ARCNET_COM90xx{"com90xx=",com90xx_setup},#endif#ifdefCONFIG_DECNET{"decnet=",decnet_setup},#endif#ifdefCONFIG_PRINTER{"lp=",lp_setup},#endif#ifdefCO NFIG_JOY_AMIGA{"js_am=",js_am_setup},#endif#ifdefCONFIG_JOY_ANALOG{"js_an=",js_an_setup},#endif#ifdefCONFIG_JOY_ASSASIN{"js_as=",js_as_setup},#endif#ifdefCONFIG_JOY_CONSOLE{"js_console=",js_console_setup},{"js_console2=",js_console_setup},{"js_console3=",js _console_setup},#endif#ifdefCONFIG_JOY_DB9{"js_db9=",js_db9_setup},{"js_db9_2=",js_db9_setup},{"js_db9_3=",js_db9_setup},#endif#ifdefCONFIG_JOY_TURBOGRAFX{"js_tg=",js_tg_setup},{"js_tg_2=",js_tg_setup},{"js_tg_3=",js_tg_setup},#endif#ifdefCONFIG_SCSI{"max_s csi_luns=",scsi_luns_setup},{"scsi_logging=",scsi_logging_setup},#endif#ifdefCONFIG_JOY_LIGHTNING{"js_l4=",js_l4_setup},#endif#ifdefCONFIG_SCSI_ADVANSYS{"advansys=",advansys_setup},#endif#ifdefined(CONFIG_BLK_DEV_HD){"hd=",hd_setup},#endif#ifdefCONFIG_CHR_D EV_ST{"st=",st_setup},#endif#ifdefCONFIG_BUSMOUSE{"bmouse=",bmouse_setup},#endif#ifdefCONFIG_MS_BUSMOUSE{"msmouse=",msmouse_setup},#endif#ifdefCONFIG_SCSI_SEAGATE{"st0x=",st0x_setup},{"tmc8xx=",tmc8xx_setup},#endif#ifdefCONFIG_SCSI_T128{"t128=",t128_setup}, #endif#ifdefCONFIG_SCSI_PAS16{"pas16=",pas16_setup},#endif#ifdefCONFIG_SCSI_GENERIC_NCR5380{"ncr5380=",generic_NCR5380_setup},{"ncr53c400=",generic_NCR53C400_setup},{"ncr53c400a=",generic_NCR53C400A_setup},{"dtc3181e=",generic_DTC3181E_setup},#endif#ifdefCO NFIG_SCSI_AHA152X{"aha152x=",aha152x_setup},#endif#ifdefCONFIG_SCSI_AHA1542{"aha1542=",aha1542_setup},#endif#ifdefCONFIG_SCSI_GDTH{"gdth=",gdth_setup},#endif#ifdefCONFIG_SCSI_AIC7XXX{"aic7xxx=",aic7xxx_setup},#endif#ifdefCONFIG_SCSI_BUSLOGIC{"BusLogic=",Bus Logic_Setup},#endif#ifdefCONFIG_SCSI_NCR53C8XX{"ncr53c8xx=",ncr53c8xx_setup},#endif#ifdefCONFIG_SCSI_EATA{"eata=",eata2x_setup},#endif#ifdefCONFIG_SCSI_U14_34F{"u14-34f=",u14_34f_setup},#endif#ifdefCONFIG_SCSI_AM53C974{"AM53C974=",AM53C974_setup},#endif#ifd efCONFIG_SCSI_NCR53C406A{"ncr53c406a=",NCR53c406a_setup},#endif#ifdefCONFIG_SCSI_FUTURE_DOMAIN{"fdomain=",fdomain_setup},#endif#ifdefCONFIG_SCSI_IN2000{"in2000=",in2000_setup},#endif#ifdefCONFIG_SCSI_7000FASST{"wd7000=",wd7000_setup},#endif#ifdefCONFIG_SCSI _IBMMCA{"ibmmcascsi=",ibmmca_scsi_setup},#endif#ifdefined(CONFIG_SCSI_DC390T)&&!defined(CONFIG_SCSI_DC390T_NOGENSUPP){"tmscsim=",dc390_setup},#endif#ifdefCONFIG_BLK_DEV_XD{"xd=",xd_setup},{"xd_geo=",xd_manual_geo_init},#endif#ifdefined(CONFIG_BLK_DEV_FD)||d efined(CONFIG_AMIGA_FLOPPY)||defined(CONFIG_ATARI_FLOPPY){"floppy=",floppy_setup},#endif#ifdefCONFIG_BLK_DEV_PS2{"eda=",ed_setup},{"edb=",ed_setup},{"tp720=",tp720_setup},#endif#ifdefCONFIG_CDU31A{"cdu31a=",cdu31a_setup},#endifCONFIG_CDU31A#ifdefCONFIG_MCD{ "mcd=",mcd_setup},#endifCONFIG_MCD#ifdefCONFIG_MCDX{"mcdx=",mcdx_setup},#endifCONFIG_MCDX#ifdefCONFIG_SBPCD{"sbpcd=",sbpcd_setup},#endifCONFIG_SBPCD#ifdefCONFIG_AZTCD{"aztcd=",aztcd_setup},#endifCONFIG_AZTCD#ifdefCONFIG_CDU535{"sonycd535=",sonycd535_setup}, #endifCONFIG_CDU535#ifdefCONFIG_GSCD{"gscd=",gscd_setup},#endifCONFIG_GSCD#ifdefCONFIG_CM206{"cm206=",cm206_setup},#endifCONFIG_CM206#ifdefCONFIG_OPTCD{"optcd=",optcd_setup},#endifCONFIG_OPTCD#ifdefCONFIG_SJCD{"sjcd=",sjcd_setup},#endifCONFIG_SJCD#ifdefCONF IG_ISP16_CDI{"isp16=",isp16_setup},#endifCONFIG_ISP16_CDI#ifdefCONFIG_SOUND_OSS{"sound=",sound_setup},#endif#ifdefCONFIG_ISDN_DRV_ICN{"icn=",icn_setup},#endif#ifdefCONFIG_ISDN_DRV_HISAX{"hisax=",HiSax_setup},{"HiSax=",HiSax_setup},#endif#ifdefCONFIG_ISDN_DR V_PCBIT{"pcbit=",pcbit_setup},#endif#ifdefCONFIG_ATARIMOUSE{"atamouse=",atari_mouse_setup},#endif#ifdefCONFIG_DMASOUND{"dmasound=",dmasound_setup},#endif#ifdefCONFIG_ATARI_SCSI{"atascsi=",atari_scsi_setup},#endif#ifdefCONFIG_STRAM_SWAP{"stram_swap=",stram_s wap_setup},#endif#ifdefined(CONFIG_A4000T_SCSI)||defined(CONFIG_WARPENGINE_SCSI)\||defined(CONFIG_A4091_SCSI)||defined(CONFIG_MVME16x_SCSI)\||defined(CONFIG_BVME6000_SCSI){"53c7xx=",ncr53c7xx_setup},#endif#ifdefined(CONFIG_A3000_SCSI)||defined(CONFIG_A2091_ SCSI)\||defined(CONFIG_GVP11_SCSI){"wd33c93=",wd33c93_setup},#endif#ifdefined(CONFIG_GVP11_SCSI){"gvp11=",gvp11_setup},#endif#ifdefCONFIG_MAC_SCSI{"mac5380=",mac_scsi_setup},#endif#ifdefCONFIG_CYCLADES{"cyclades=",cy_setup},#endif#ifdefCONFIG_DIGI{"digi=",p cxx_setup},#endif#ifdefCONFIG_DIGIEPCA{"digiepca=",epca_setup},#endif#ifdefCONFIG_RISCOM8{"riscom8=",riscom8_setup},#endif#ifdefCONFIG_DMASCC{"dmascc=",dmascc_setup},#endif#ifdefCONFIG_SPECIALIX{"specialix=",specialix_setup},#endif#ifdefCONFIG_BAYCOM_PAR{"b aycom_par=",baycom_par_setup},#endif#ifdefCONFIG_BAYCOM_SER_FDX{"baycom_ser_fdx=",baycom_ser_fdx_setup},#endif#ifdefCONFIG_BAYCOM_SER_HDX{"baycom_ser_hdx=",baycom_ser_hdx_setup},#endif#ifdefCONFIG_SOUNDMODEM{"soundmodem=",sm_setup},#endif#ifdefCONFIG_WDT{"w dt=",wdt_setup},#endif#ifdefCONFIG_PARPORT{"parport=",parport_setup},#endif#ifdefCONFIG_PLIP{"plip=",plip_setup},#endif#ifdefCONFIG_HFMODEM{"hfmodem=",hfmodem_setup},#endif#ifdefCONFIG_FTAPE{"ftape=",ftape_setup},#endif#ifdefCONFIG_MD_BOOT{"md=",md_setup},# endif#ifdefCONFIG_ADBMOUSE{"adb_buttons=",adb_mouse_setup},#endif#ifdefCONFIG_LTPC{"ltpc=",ltpc_setup},#endif{0,0}};staticstructkernel_paramraw_params[]__initdata={{"root=",root_dev_setup},#ifdefCONFIG_ROOT_NFS{"nfsroot=",nfs_root_setup},{"nfsaddrs=",ip_aut o_config_setup},#endif#ifdefCONFIG_IP_PNP{"ip=",ip_auto_config_setup},#endif#ifdefCONFIG_PCI{"pci=",pci_setup},#endif#ifdefCONFIG_PARIDE_PD{"pd.",pd_setup},#endif#ifdefCONFIG_PARIDE_PCD{"pcd.",pcd_setup},#endif#ifdefCONFIG_PARIDE_PF{"pf.",pf_setup},#endif#i fdefCONFIG_PARIDE_PT{"pt.",pt_setup},#endif#ifdefCONFIG_PARIDE_PG{"pg.",pg_setup},#endif#ifdefCONFIG_APM{"apm=",apm_setup},#endif{0,0}};#ifdefCONFIG_BLK_DEV_RAMstaticvoid__initramdisk_start_setup(char*str,int*ints){if(ints[0]>0&&ints[1]>=0)rd_image_start=in ts[1];}staticvoid__initload_ramdisk(char*str,int*ints){if(ints[0]>0&&ints[1]>=0)rd_doload=ints[1]&1;}staticvoid__initprompt_ramdisk(char*str,int*ints){if(ints[0]>0&&ints[1]>=0)rd_prompt=ints[1]&1;}staticvoid__initramdisk_size(char*str,int*ints){if(ints[0]>0 &&ints[1]>=0)rd_size=ints[1];}#endifstaticint__initchecksetup(char*line){inti,ints[11];#ifdefCONFIG_BLK_DEV_IDE/*idedriverneedsthebasicstring,ratherthanpre-processedvalues*/if(!strncmp(line,"ide",3)||(!strncmp(line,"hd",2)&&line[2]!='=')){ide_setup(line);re turn1;}#endiffor(i=0;raw_params[i].str;i++){intn=strlen(raw_params[i].str);if(!strncmp(line,raw_params[i].str,n)){raw_params[i].setup_func(line+n,NULL);return1;}}for(i=0;cooked_params[i].str;i++){intn=strlen(cooked_params[i].str);if(!strncmp(line,cooked_par ams[i].str,n)){cooked_params[i].setup_func(get_options(line+n,ints),ints);return1;}}return0;}/*thisshouldbeapprox2Bo*oMipstostart(noteinitialshift),andwillstillworkevenifinitiallytoolarge,itwilljusttakeslightlylonger*/unsignedlongloops_per_sec=(1<<12);/*Thi sisthenumberofbitsofprecisionfortheloops_per_second.Eachbittakesonaverage1.5/HZseconds.This(liketheoriginal)isalittlebetterthan1%*/#defineLPS_PREC8void__initcalibrate_delay(void){unsignedlongticks,loopbit;intlps_precision=LPS_PREC;loops_per_sec=(1 >=1;loopbit=loops_per_sec;while(lps_precision--&&(loopbit>>=1)){loops_per_sec|=loopbit;ticks=jiffies;while(ticks==jiffies);ticks=jiffies;__delay(loops_per_sec);if(jiffies!=ticks)/*longerthan1tick*/loo ps_per_sec&=~loopbit;}/*finally,adjustloopspersecondintermsofsecondsinsteadofclocks*/loops_per_sec*=HZ;/*Roundthevalueandprintit*/printk("%lu.%02luBogoMIPS\n",(loops_per_sec+2500)/500000,((loops_per_sec+2500)/5000)%100);}/**Thisisasimplekernelcommandlinepar singfunction:itparses*thecommandline,andfillsinthearguments/environmenttoinit*asappropriate.Anycmd-lineoptionistakentobeanenvironment*variableifitcontainsthecharacter'='.**Thisroutinealsochecksforoptionsmeantforthekernel.*Theseoptionsarenotgiventoinit-theya reforinternalkerneluseonly.*/staticvoid__initparse_options(char*line){char*next;intargs,envs;if(!*line)return;args=0;envs=1;/*TERMissetto'linux'bydefault*/next=line;while((line=next)!=NULL){if((next=strchr(line,''))!=NULL)*next++=0;/**checkforkerneloptionsf irst..*/if(!strcmp(line,"ro")){root_mountflags|=MS_RDONLY;continue;}if(!strcmp(line,"rw")){root_mountflags&=~MS_RDONLY;continue;}if(!strcmp(line,"debug")){console_loglevel=10;continue;}if(!strncmp(line,"init=",5)){line+=5;execute_command=line;/*IncaseLILOis goingtobootuswithdefaultcommandline,*itprepends"auto"beforethewholecmdlinewhichmakes*theshellthinkitshouldexecuteascriptwithsuchname.*Soweignoreallargumentsentered_before_init=...[MJ]*/args=0;continue;}if(checksetup(line))continue;/**Thencheckifit'sanenviro nmentvariableor*anoption.*/if(strchr(line,'=')){if(envs>=MAX_INIT_ENVS)break;envp_init[++envs]=line;}else{if(args>=MAX_INIT_ARGS)break;argv_init[++args]=line;}}argv_init[args+1]=NULL;envp_init[envs+1]=NULL;}externvoidsetup_arch(char**,unsignedlong*,unsigned long*);#ifndef__SMP__/**Uniprocessoridlethread*/intcpu_idle(void*unused){for(;;)idle();}#definesmp_init()do{}while(0)#else/**Multiprocessoridlethreadisinarch/...*/externintcpu_idle(void*unused);/*Calledbybootprocessortoactivatetherest.*/staticvoid__initsmp_ init(void){/*Getotherprocessorsintotheirbootupholdingpatterns.*/smp_boot_cpus();smp_threads_ready=1;smp_commence();}#endifexternvoidinitialize_secondary(void);/**Activatethefirstprocessor.*/asmlinkagevoid__initstart_kernel(void){char*command_line;#ifdef__SM P__staticintboot_cpu=1;/*"current"hasbeensetup,weneedtoloaditnow*/if(!boot_cpu)initialize_secondary();boot_cpu=0;#endif/**Interruptsarestilldisabled.Donecessarysetups,then*enablethem*/printk(linux_banner);setup_arch(&command_line,&memory_start,&memory_end); memory_start=paging_init(memory_start,memory_end);trap_init();init_IRQ();sched_init();time_init();parse_options(command_line);/**HACKALERT!Thisisearly.We'reenablingtheconsolebefore*we'vedonePCIsetupsetc,andconsole_init()mustbeawareof*this.Butwedowantoutpute arly,incasesomethinggoeswrong.*/memory_start=console_init(memory_start,memory_end);#ifdefCONFIG_MODULESinit_modules();#endifif(prof_shift){prof_buffer=(unsignedint*)memory_start;/*onlytextisprofiled*/prof_len=(unsignedlong)&_etext-(unsignedlong)&_stext;prof _len>>=prof_shift;memory_start+=prof_len*sizeof(unsignedint);memset(prof_buffer,0,prof_len*sizeof(unsignedint));}memory_start=kmem_cache_init(memory_start,memory_end);sti();calibrate_delay();#ifdefCONFIG_BLK_DEV_INITRDif(initrd_start&&!initrd_below_start_ok &&initrd_start<memory_start){printk(KERN_CRIT"initrdoverwritten(0x%08lx<0x%08lx)-""disablingit.\n",initrd_start,memory_start);initrd_start=0;}#endifmem_init(memory_start,memory_end);kmem_cache_sizes_init();#ifdefCONFIG_PROC_FSproc_root_init();#endifuidcache _init();filescache_init();dcache_init();vma_init();buffer_init();signals_init();inode_init();file_table_init();#ifdefined(CONFIG_SYSVIPC)ipc_init();#endif#ifdefined(CONFIG_QUOTA)dquot_init_hash();#endifcheck_bugs();printk("POSIXconformancetestingbyUNIFIX\n" );/**Wecountontheinitialthreadgoingok*Likeidlersinitisanunlockedkernelthread,whichwill*makesyscalls(andthusbelocked).*/smp_init();kernel_thread(init,NULL,CLONE_FS|CLONE_FILES|CLONE_SIGHAND);current->need_resched=1;cpu_idle(NULL);}#ifdefCONFIG_BLK_DEV_INITRD staticintdo_linuxrc(void*shell){staticchar*argv[]={"linuxrc",NULL,};close(0);close(1);close(2);setsid();(void)open("/dev/console",O_RDWR,0);(void)dup(0);(void)dup(0);returnexecve(shell,argv,envp_init);}staticvoid__initno_initrd(char*s,int*ints){mount_initrd =0;}#endifstructtask_struct*child_reaper=&init_task;/**Ok,themachinei