uImage的制作工具mkimage详解(源码编译使用方法添加的头解析uImage的制作)

篇首语：本文由编程笔记#小编为大家整理，主要介绍了uImage的制作工具mkimage详解(源码编译使用方法添加的头解析uImage的制作)相关的知识，希望对你有一定的参考价值。

(1)mkimage是uboot下面的一个工具&＃xff0c;用来将zImage制作成uImage&＃xff0c;制作内核启动镜像(给zImage镜像添加64字节的头信息成uImage)&＃xff1b;
(2)mkimage的源码在"uboot/tool"目录下&＃xff0c;在编译uboot时默认会编译出mkimage工具&＃xff1b;

root&＃64;daizhixin-virtual-machine:# ./mkimage
Usage: ./mkimage -l image
-l &＃61;&＃61;> list image header information
./mkimage [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image
-A &＃61;&＃61;> set architecture to &＃39;arch&＃39;
-O &＃61;&＃61;> set operating system to &＃39;os&＃39;
-T &＃61;&＃61;> set image type to &＃39;type&＃39;
-C &＃61;&＃61;> set compression type &＃39;comp&＃39;
-a &＃61;&＃61;> set load address to &＃39;addr&＃39; (hex)
-e &＃61;&＃61;> set entry point to &＃39;ep&＃39; (hex)
-n &＃61;&＃61;> set image name to &＃39;name&＃39;
-d &＃61;&＃61;> use image data from &＃39;datafile&＃39;
-x &＃61;&＃61;> set XIP (execute in place)
./mkimage [-D dtc_options] -f fit-image.its fit-image


/*
* Operating System Codes
*/
#define IH_OS_INVALID 0 /* Invalid OS */
#define IH_OS_OPENBSD 1 /* OpenBSD */
#define IH_OS_NETBSD 2 /* NetBSD */
#define IH_OS_FREEBSD 3 /* FreeBSD */
#define IH_OS_4_4BSD 4 /* 4.4BSD */
#define IH_OS_LINUX 5 /* Linux */
#define IH_OS_SVR4 6 /* SVR4 */
#define IH_OS_ESIX 7 /* Esix */
#define IH_OS_SOLARIS 8 /* Solaris */
#define IH_OS_IRIX 9 /* Irix */
#define IH_OS_SCO 10 /* SCO */
#define IH_OS_DELL 11 /* Dell */
#define IH_OS_NCR 12 /* NCR */
#define IH_OS_LYNXOS 13 /* LynxOS */
#define IH_OS_VXWORKS 14 /* VxWorks */
#define IH_OS_PSOS 15 /* pSOS */
#define IH_OS_QNX 16 /* QNX */
#define IH_OS_U_BOOT 17 /* Firmware */
#define IH_OS_RTEMS 18 /* RTEMS */
#define IH_OS_ARTOS 19 /* ARTOS */
#define IH_OS_UNITY 20 /* Unity OS */
/*
* CPU Architecture Codes (supported by Linux)
*/
#define IH_ARCH_INVALID 0 /* Invalid CPU */
#define IH_ARCH_ALPHA 1 /* Alpha */
#define IH_ARCH_ARM 2 /* ARM */
#define IH_ARCH_I386 3 /* Intel x86 */
#define IH_ARCH_IA64 4 /* IA64 */
#define IH_ARCH_MIPS 5 /* MIPS */
#define IH_ARCH_MIPS64 6 /* MIPS 64 Bit */
#define IH_ARCH_PPC 7 /* PowerPC */
#define IH_ARCH_S390 8 /* IBM S390 */
#define IH_ARCH_SH 9 /* SuperH */
#define IH_ARCH_SPARC 10 /* Sparc */
#define IH_ARCH_SPARC64 11 /* Sparc 64 Bit */
#define IH_ARCH_M68K 12 /* M68K */
#define IH_ARCH_Nios 13 /* Nios-32 */
#define IH_ARCH_MICROBLAZE 14 /* MicroBlaze */
#define IH_ARCH_NIOS2 15 /* Nios-II */
#define IH_ARCH_BLACKFIN 16 /* Blackfin */
#define IH_ARCH_AVR32 17 /* AVR32 */
#define IH_ARCH_ST200 18 /* STMicroelectronics ST200 */
/*
* Image Types
* /
#define IH_TYPE_INVALID 0 /* Invalid Image */
#define IH_TYPE_STANDALONE 1 /* Standalone Program */
#define IH_TYPE_KERNEL 2 /* OS Kernel Image */
#define IH_TYPE_RAMDISK 3 /* RAMDisk Image */
#define IH_TYPE_MULTI 4 /* Multi-File Image */
#define IH_TYPE_FIRMWARE 5 /* Firmware Image */
#define IH_TYPE_SCRIPT 6 /* Script file */
#define IH_TYPE_FILESYSTEM 7 /* Filesystem Image (any type) */
#define IH_TYPE_FLATDT 8 /* Binary Flat Device Tree Blob */
/*
* Compression Types
*/
#define IH_COMP_NONE 0 /* No Compression Used */
#define IH_COMP_GZIP 1 /* gzip Compression Used */
#define IH_COMP_BZIP2 2 /* bzip2 Compression Used */
#define IH_MAGIC 0x27051956 /* mkimage制作镜像的魔数Image Magic Number */
#define IH_NMLEN 32 /* Image Name Length
/*
* Legacy format image header,
* all data in network byte order (aka natural aka bigendian).
*/
typedef struct image_header
uint32_t ih_magic; /* Image Header Magic Number */
uint32_t ih_hcrc; /* Image Header CRC Checksum */
uint32_t ih_time; /* Image Creation Timestamp */
uint32_t ih_size; /* Image Data Size */
uint32_t ih_load; /* Data Load Address */
uint32_t ih_ep; /* Entry Point Address */
uint32_t ih_dcrc; /* Image Data CRC Checksum */
uint8_t ih_os; /* Operating System */
uint8_t ih_arch; /* CPU architecture */
uint8_t ih_type; /* Image Type */
uint8_t ih_comp; /* Compression Type */
uint8_t ih_name[IH_NMLEN]; /* Image Name */
image_header_t;


image_header_t结构体定义在uboot源码的image.h中&＃xff0c;和mkimage工具的使用参数是对应关系&＃xff0c;mkimage工具就是构建image_header_t这样一个64字节头&＃xff1b;

参考博客&＃xff1a;《uImage的制作过程详解》&＃xff1b;

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