使用QEMU建立Mini2440及模拟环境.doc

使用qemu 建立mini2440的模拟仿真环境1. 首先下载qemu for mini2440git clone git:/repo.or.cz/qemu/mini2440.git qemu如果感觉速度慢，直接打包下载http:/repo.or.cz/w/qemu/mini2440.git/snapshot/HEAD.tar.gz解压后，今日源代码的主目录中，12# ./configure -target-list=arm-softmmu# make -j42. 下载u-boot for mini2440git clonegit:/repo.or.cz/w/u-boot-openmoko/mini2440.git uboot或者打包下载http:/repo.or.cz/w/u-boot-openmoko/mini2440.git/snapshot/HEAD.tar.gz（注意 采用打包下载的时候这几个包的文件名可能相同，注意区分）解压后，配置Makefile文件，打开Makefile文件，CROSS_COMPILE变量赋值，即自己所使用的交叉编译工具链，比如我的是arm-none-linux-gnueabi-，保存退出，输入12# make mini2440_config# make -j4稍等两分钟，即在当前目录下生成名为 u-boot.bin 的文件，注意如果想在之后使用u-boot 的nfs下载文件功能，需要修改代码中的一部分，将net/nfs.c文件中的NFS_TIMEOUT = 2UL 修改为 NFS_TIMEOUT = 20000UL 否则会造成nfs文件下载失败，如果不使用nfs下载功能，不改也可。然后将u-boot.bin文件拷贝到qemu-mini2440/mini2440文件夹下。3. 下载 linux kernel for mini2440（可以使用原mini2440开发板的内核源代码）（下载步骤略去）进入源码目录12#make mini2440_defconfig ARCH=arm#make uImage之后会在arch/arm/boot/目录下生成uImage 文件，将此文件复制到qemu目录下的mini2440文件夹下，并将mini2440文件夹中的mini2440_start.sh作如下修改将 kernel 一行改为-kernel $base/uImage ,回到上层目录后运行1# sh mini2440/mini2440_start.sh错误解决：一、1.如果在编译QEMU时没有安装，即 make install，那么需要打开mini2440/mini2440_start.sh，将第16行的 qemu-img改为：$base/./qemu-img2.如果编译时安装了QEMU,即有make install，不管这一步骤。二、期待的画面并没有出来，取而代之的是：/etc/qemu-ifup:could not launch network scriptCould not initialize device tap该错误一般是运行权限错误，使用根用户运行。三、使用根用户运行，依旧是：/etc/qemu-ifup:could not launch network script 。对qemu中的net.c在代码进行修改：static int launch_script(const char *setup_script, const char *ifname, int fd) int pid, status; char *args4; /* bacon modified */ char *parg; /* try to launch network script */ pid = fork(); if (pid = 0) if (pid = 0) char path20;/* bacon add */ int open_max = sysconf (_SC_OPEN_MAX), i; for (i = 0; i nand,0,S3C_RAM_BASE|0x03f80000,256*116. -mini2440_printf(loadeddefaultu-bootfromNAND/n);17. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddr18. -19. -#if0&defined(LATER)20. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM21. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress22. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);23. -24. -#endif25. :26. diff-gita/hw/mini2440.cb/hw/mini2440.c27. index5decf4b.7a70aae10064428. -a/hw/mini2440.c29. +b/hw/mini2440.c30. -258,46+258,15staticvoidmini2440_reset(void*opaque)31. structmini2440_board_s*s=(structmini2440_board_s*)opaque;32. uint32_timage_size;33. 34. -/*35. -*Normallywewouldload4KBofnandtoSRAMandjumpthere,but36. -*itisnotworkingperfectlyasexpected,sowecheatandload37. -*itfromnanddirectlyrelocatedto0x33f80000andjumpthere38. -*/39. -if(mini2440_load_from_nand(s-nand,0,S3C_RAM_BASE|0x03f80000,256*1040. -mini2440_printf(loadeddefaultu-bootfromNAND/n);41. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddre42. -43. -#if0&defined(LATER)44. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM_45. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress,46. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);47. -48. -#endif49. -/*50. :51. diff-gita/hw/mini2440.cb/hw/mini2440.c52. index5decf4b.7a70aae10064453. -a/hw/mini2440.c54. +b/hw/mini2440.c55. -258,46+258,15staticvoidmini2440_reset(void*opaque)56. structmini2440_board_s*s=(structmini2440_board_s*)opaque;57. uint32_timage_size;58. 59. -/*60. -*Normallywewouldload4KBofnandtoSRAMandjumpthere,but61. -*itisnotworkingperfectlyasexpected,sowecheatandload62. -*itfromnanddirectlyrelocatedto0x33f80000andjumpthere63. -*/64. -if(mini2440_load_from_nand(s-nand,0,S3C_RAM_BASE|0x03f80000,256*10265. -mini2440_printf(loadeddefaultu-bootfromNAND/n);66. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddres67. -68. -#if0&defined(LATER)69. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM_S70. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress,71. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);72. -73. -#endif74. -/*75. -*ifau-bootisavailableasafile,wealwaysuseit76. :77. diff-gita/hw/mini2440.cb/hw/mini2440.c78. index5decf4b.7a70aae10064479. -a/hw/mini2440.c80. +b/hw/mini2440.c81. -258,46+258,15staticvoidmini2440_reset(void*opaque)82. structmini2440_board_s*s=(structmini2440_board_s*)opaque;83. uint32_timage_size;84. 85. -/*86. -*Normallywewouldload4KBofnandtoSRAMandjumpthere,but87. -*itisnotworkingperfectlyasexpected,sowecheatandload88. -*itfromnanddirectlyrelocatedto0x33f80000andjumpthere89. -*/90. -if(mini2440_load_from_nand(s-nand,0,S3C_RAM_BASE|0x03f80000,256*1024)91. -mini2440_printf(loadeddefaultu-bootfromNAND/n);92. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddress,93. -94. -#if0&defined(LATER)95. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM_SIZE96. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress,u-b97. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);98. -99. -#endif100. -/*101. -*ifau-bootisavailableasafile,wealwaysuseit102. -*/103. -104. -image_size=load_image(mini2440/u-boot.bin,qemu_get_ram_ptr(0x03f8000105. :106. diff-gita/hw/mini2440.cb/hw/mini2440.c107. index5decf4b.7a70aae100644108. -a/hw/mini2440.c109. +b/hw/mini2440.c110. -258,46+258,15staticvoidmini2440_reset(void*opaque)111. structmini2440_board_s*s=(structmini2440_board_s*)opaque;112. uint32_timage_size;113. 114. -/*115. -*Normallywewouldload4KBofnandtoSRAMandjumpthere,but116. -*itisnotworkingperfectlyasexpected,sowecheatandload117. -*itfromnanddirectlyrelocatedto0x33f80000andjumpthere118. -*/119. -if(mini2440_load_from_nand(s-nand,0,S3C_RAM_BASE|0x03f80000,256*1024)0)120. -mini2440_printf(loadeddefaultu-bootfromNAND/n);121. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddress,u-b122. -123. -#if0&defined(LATER)124. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM_SIZE)125. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress,u-boot126. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);127. -128. -#endif129. -/*130. -*ifau-bootisavailableasafile,wealwaysuseit131. -*/132. -133. -image_size=load_image(mini2440/u-boot.bin,qemu_get_ram_ptr(0x03f80000)134. -if(image_size0)137. :138. diff-gita/hw/mini2440.cb/hw/mini2440.c139. index5decf4b.7a70aae100644140. -a/hw/mini2440.c141. +b/hw/mini2440.c142. -258,46+258,15staticvoidmini2440_reset(void*opaque)143. structmini2440_board_s*s=(structmini2440_board_s*)opaque;144. uint32_timage_size;145. 146. -/*147. -*Normallywewouldload4KBofnandtoSRAMandjumpthere,but148. -*itisnotworkingperfectlyasexpected,sowecheatandload149. -*itfromnanddirectlyrelocatedto0x33f80000andjumpthere150. -*/151. -if(mini2440_load_from_nand(s-nand,0,S3C_RAM_BASE|0x03f80000,256*1024)0)152. -mini2440_printf(loadeddefaultu-bootfromNAND/n);153. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddress,u-boot154. -155. -#if0&defined(LATER)156. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM_SIZE)0)157. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress,u-bootrel158. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);159. -160. -#endif161. -/*162. -*ifau-bootisavailableasafile,wealwaysuseit163. -*/164. -165. -image_size=load_image(mini2440/u-boot.bin,qemu_get_ram_ptr(0x03f80000);166. -if(image_size0)169. -if(image_size&(512-1)/*roundsizetoaNANDblocksize*170. -image_size=(image_size+512)&(512-1);171. -mini2440_printf(loadedoverrideu-boot(size%x)/n,image_size);172. :173. diff-gita/hw/mini2440.cb/hw/mini2440.c174. index5decf4b.7a70aae100644175. -a/hw/mini2440.c176. +b/hw/mini2440.c177. -258,46+258,15staticvoidmini2440_reset(void*opaque)178. structmini2440_board_s*s=(structmini2440_board_s*)opaque;179. uint32_timage_size;180. 181. -/*182. -*Normallywewouldload4KBofnandtoSRAMandjumpthere,but183. -*itisnotworkingperfectlyasexpected,sowecheatandload184. -*itfromnanddirectlyrelocatedto0x33f80000andjumpthere185. -*/186. -if(mini2440_load_from_nand(s-nand,0,S3C_RAM_BASE|0x03f80000,256*1024)0)187. -mini2440_printf(loadeddefaultu-bootfromNAND/n);188. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddress,u-bootalrea189. -190. -#if0&defined(LATER)191. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM_SIZE)0)192. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress,u-bootrelocati193. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);194. -195. -#endif196. -/*197. -*ifau-bootisavailableasafile,wealwaysuseit198. -*/199. -200. -image_size=load_image(mini2440/u-boot.bin,qemu_get_ram_ptr(0x03f80000);201. -if(image_size0)204. -if(image_size&(512-1)/*roundsizetoaNANDblocksize*/205. -image_size=(image_size+512)&(512-1);206. -mini2440_printf(loadedoverrideu-boot(size%x)/n,image_size);207. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddress,u-boot208. -209. -210. :211. diff-gita/hw/mini2440.cb/hw/mini2440.c212. index5decf4b.7a70aae100644213. -a/hw/mini2440.c214. +b/hw/mini2440.c215. -258,46+258,15staticvoidmini2440_reset(void*opaque)216. structmini2440_board_s*s=(structmini2440_board_s*)opaque;217. uint32_timage_size;218. 219. -/*220. -*Normallywewouldload4KBofnandtoSRAMandjumpthere,but221. -*itisnotworkingperfectlyasexpected,sowecheatandload222. -*itfromnanddirectlyrelocatedto0x33f80000andjumpthere223. -*/224. -if(mini2440_load_from_nand(s-nand,0,S3C_RAM_BASE|0x03f80000,256*1024)0)225. -mini2440_printf(loadeddefaultu-bootfromNAND/n);226. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddress,u-bootalreadyrelo227. -228. -#if0&defined(LATER)229. -if(mini2440_load_from_nand(s-nand,0,S3C_SRAM_BASE_NANDBOOT,S3C_SRAM_SIZE)0)230. -s-cpu-env-regs15=S3C_SRAM_BASE_NANDBOOT;/*startaddress,u-bootrelocatingcode231. -mini2440_printf(4KBSteppingStoneloadedfromNAND/n);232. -233. -#endif234. -/*235. -*ifau-bootisavailableasafile,wealwaysuseit236. -*/237. -238. -image_size=load_image(mini2440/u-boot.bin,qemu_get_ram_ptr(0x03f80000);239. -if(image_size0)242. -if(image_size&(512-1)/*roundsizetoaNANDblocksize*/243. -image_size=(image_size+512)&(512-1);244. -mini2440_printf(loadedoverrideu-boot(size%x)/n,image_size);245. -s-cpu-env-regs15=S3C_RAM_BASE|0x03f80000;/*startaddress,u-bootalready246. -247. -248. -/*249. -*ifakernelwasexplicitlyspecified,weloadittoo250. -*/251. -if(s-kernel)252. -image_size=load_image(s-kernel,qemu_get_ram_ptr(0x02000000);253. :254. diff-gita/hw/mini2440.cb/hw/mini2440.c255. index5decf4b.7a70a