原创 ViVi

head.s     config.h（包含autoconf.h）---autoconf.h(配置选项)

              linkage.h-(链接相关)

              machine.h(平台选择，包含smdk2410)---smdk2410.h

<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

       关WatchDog

       禁止所有中断

       初始化系统时钟

       初始化内存控制器

       检查是否从掉电模式唤醒

       点亮LED “GPF=<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />0”

       初始化UART0

       将vivi所有代码从nandflash复制到sdram , 然后 run on sdram

       跳到bootloader的阶段2运行 main()

main.c

       reset_handler()      /lib/reset_handle.c

              clear_mem()          /lib/memory.c 内存清0

       board_init()            /arch/s3c2410/smdk.c

              init_time()              /arch/s3c2410/proc.c     TCFG0=0xf00

              set_gpios()            /arch/s3c2410/smdk.c   设置GPA--GPH端口,EXTINT0--2

       mem_map_init();    /arch/s3c2410/mmu.c

              mem_map_nand_boot()

                     mem_mepping_linear     建立页表。页表存放在SDRAM物理地址                                                                   0x33dfc000开始处，共16K：一个页表项4字节                                                               (32bit Word)，共有4096个页表项；每个页表项对                                                  应1M地址空间，共4G

              cache_clean_invalidate()

              tlb_invalidate()

       mem_init()      启动MMU

              arm920_setup()

       heap_init()      建立堆/lib/heap.c

              mmalloc_init()

       mtd_dev_init()              Memory Technology Device，在上层应用和硬件驱动的中间，抽                象出MTD设备层。驱动层仅仅提供一些简单的接口，比如读写、                             擦除及查询。MTD层将驱动层提供的函数封装起来，向上层提                             供统一的接口。/drivers/mtd/mtdcore.c

              mtd_init()       /drivers/mtd/maps/s3c2410_flash.c

                     smc_init()      /drivers/mtd/maps/s3c2410_flash.c

       init_priv_data()      /lib/priv_data/rw.c

              get_default_priv_data()

              load_saved_priv_data()

       misc()     /arch/s3c2410/smdk.c

              add_command(&cpu_cmd) 

       init_builtin_cmds() /lib/command.c

              add_command()

       boot_or_vivi()       /init/main.c

              vivi_shell()     /init/main.c

                     serial_term()  /drivers/serial/term.c

                            ..

                            getcmd()        /drivers/serial/getcmd.c

                            exec_string()  /lib/command.c

                                   ..

                                   parseargs()    确定参数      /lib/command.c

                                   execcmd()     执行命令      /lib/command.c

              run_autoboot()      /init/main.c

                     exec_string("boot")       /lib/command.c

                            command_boot()          /lib/boot_kernel.c

                                   boot_kernel()               /lib/boot_kernel.c

                                          ..

                                          setup_linux_param()

                                          call_linux()