ARMLinux系统结构内核

ARMLinux用户状态中断状态（IRQImterruptRequest）快中断状态（FIQ,FastImterrupt监管状态终止状态无定义状态系统状态ARM-Linux内存管理和表”，当CPU访问内存的时候：者页面映射表项中的2位的“访问权限”AP为staticstructmap_descxsbase255_io_desc[] initdata=/* rwcb0xE8000000,0x000000000x02000000DOMAIN_IO0100片选0CS0IntelStrataFlash0xF0000000,0x040000000x00100000DOMAIN_IO0100片选1CS10xf0110000,0x080000000x00010000DOMAIN_IO0100片选2CS2ExtendPORT0,扩充的{0xf0120000,0x08100000,0x00010000,DOMAIN_IO,0,1,0,0},//CS2:Extend0xf1000000,0x0C7000000x00010000DOMAIN_IO0100片选CS3USBHost(Ez-ARM-LinuxARM-Linuxstructhw_interrupt_type{constchar*typename;unsignedint(*startup)(unsignedintirq);void(*shutdown)(unsignedintirq);void(*enable)(unsignedintirq);void(*ack)(unsignedintirq);void(*end)(unsignedintvoid(*set_affinity)(unsigedintirq,unsignedlong每一个中断请求线都有一个structirqdesc数typedeftypedefstructunsignedintstatus; /*IRQstatus*/hw_irq_controller*handler;structirqaction*action;/*IRQactionlist*/unsignedintdepth; /*nestedirqdisables*/spinlock_tlock;

Structvoidhello(void)voidhello(void)printk(“helloarch/arm/kernel/call.S中添加新的系 NR_syscalls-( syscall_end- syscall_start)/4实验一创建和使用一个新的系统调用obj-yobj-y:=arch.ocompat.odma.o$(ENTRY_OBJ)entry-common.oirq.oprocess.optrace.osemaphore.osetup.osignal.osys_arm.o\time.otraps.o$(O_OBJS_$(MACHINE))mysyscall.o实验一创建和使用一个新的系统调用 ("swi#include<stdio.h>#include“test.h”intmain(void)printf("starthello\n");printf("end实验一创建和使用一个新的系统调用##arm-linux-gcctest.c-o#./test#./teststarthellohelloworldendhello化函数，以完成kernel内存初始化（创建和设置内部及通用创建uidtaskcountSLAB创建文件创建目录创建与虚存相关的创建信号队列创建内存文件描述符表kswapd内核线程。 do_execve()执行具体的操作do_exit(longcode)带一个参数code，用实现终止：sys_exit（）sys_reboot()ARM-Linux在内核应用中直接调用被动调用Linuxmodule载入内核后，它就成为内核lsmodkernel中已经安装的modulesinsmodmodulekernelrmmodmodule从kerneldepmodmoduledependencyfile，以告诉将insmod要去哪儿找modules来安装structmodule{structmodule*next;structmodule_ref*ref;/*thelistofmodulesthatrefertome*/structsymbol_table*symtab;constcharintsize; /*sizeofmoduleinpages*/void*addr; /*addressofmodule*/intstate;void(*cleanup)(void);/*cleanuproutinestructsymbol_tableintsize;/*total,includingstringtable!!!*/intn_symbols;intstructinternal_symbolsymbol[0];/*actualsizedefinedbyn_symbols*/structmodule_refref[0];/*actualsizedefinedbyn_refs根据需要载入module(demandloaded调用系统调用sys_create_moduleLinux8内核、2.6内核和LynuxOS4.0在最好Linux2.6内核移植制作BootLinux2.6内核移植\h\hARMLinux是基于标准Linux内核为ARM做的\h.uk\h上下\h$makeLinux2.6内核移植$make修改t-linux文件，在TARGET_LIBGCC2_CFLAGS加上- $cdgcc-$cdgcc-$./configure--target=arm-linux--prefix=/arm-linux--with-headers=/root/linux-2.6.10/include--enable-languages=c--disable-shared--disable-threadsLinux2.6内核移植SUBARCH:=(shelluname–m|sed–es/i.86/i386/es/sun4u/sparc64/es/arm.*/arm/es/sa110/arm/)SUBARCH:修改编译器选项:CROSS_COMPILE=arm-linux-Linux2.6内核移植在SYSTEMTYPE目录中选择正确的CPU，在IntelImlementations选项中选择Int