asmlinkage __visible void __init start_kernel(void){…pr_notice(“Kernel command line: %s\n”, boot_command_line);…}
Allow generic configuration of the MTD partition tables via the kernel command line. Multiple flash resources are supported for hardware where different kinds of flash memory are available. You will still need the parsing functions to be called by the driver for your particular device. It won't ...
Allow generic configuration of the MTD partition tables via the kernel command line. Multiple flash resources are supported for hardware where different kinds of flash memory are available. You will still need the parsing functions to be called by the driver for your particular device. It won't ...
我们正常启动流程，默认是直接跳过Uboot命令行模式的，因为Uboot主要的作用是引导Kernel，一般我们不进行u...
首先我们知道kernel的镜像最开始是压缩的zImage格式的存在,然后Uboot有工具mkimage把其转换为uImage。 然后这个uImage被加载到哪里呢?这个就是Uboot里面的bootm机制来搞定的。 在这里插入图片描述 U-Boot命令bootm将内核映像复制到0x00010000,将RAMDISK映像复制到0x00800000。这时,U-Boot跳转到地址0x00010000来启动Linux...
至此start_kernel()结束,基本的核心环境已经建立起来了。 } 9)第一个内核线程 - kernel_init 三、start_kernel函数流程: asmlinkage void __init start_kernel(void) { char * command_line; extern const struct kernel_param __start___param[], __stop___param[]; ...
1、uboot引导kernel: u-boot中有个bootm命令,它可以引导内存中的应用程序映像(Kernel),bootm命令对应 common/cmd_bootm.c中的do_bootm()函数,此函数实现下面几个功能: 1)读flash中的内核映像文件 2)解压内核 3)校验内核 4)跳到内核执行(调用do_bootm_linux()函数) ...
on the kernel command-line to indicate the boot state. It shall use the following value: green: If in LOCKED state and the key used for verification was not by the end user. yellow: If in LOCKED state and the key used for verification was setby the end user. orange: If in the UNLO...
1、u-boot给kernel传RAM参数 ./common/cmd_bootm.c文件中(指Uboot的根目录),bootm命令对应的do_bootm函数,当分析uImage中信息发现OS是Linux时,调用./lib_arm/bootm.c文件中的do_bootm_linux函数来启动Linux kernel。 在do_bootm_linux函数中: void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int ...
第二个TAG的长度是F个字,类型是ATAG_CMDLINE(54410009),这是一个字符串,是向内核传递的kernel command line 第三个TAG的长度是4个字,类型是ATAG_INITRD2(54410005),有两个元素,第一个是start:30300040(30300000+40),第二个是size:200000(2M) 如果说还有第四个TAG,那就是末尾的两个全零,这是TAG结束的标...