【zynq征文】基于ZedBoard Linux应用设计

huxiaokai2005

在之前几节分别介绍了基于zynq的Linux启动所需文件的生成方法，本节则总结一下，在ZedBoard上实测一下Linux应用。
        《基于zynq的交叉编译平台》：准备工作，建立交叉编译环境
        《u-boot image生成》：生成u-boot文件（BOOT.BIN）
        《Linux内核编译》：生成Linux内核镜像文件（zImage）
        《设备树生成》：生成设备树文件（devicetree.dtb）
        《基于zynq的Linux根文件系统生成》：生成根文件系统文件（ramdisk8M.image.gz）
        Linux启动所需文件生成后信息如图1所示：

图1

        将以上文件拷贝到SD卡中，ZedBoard上电，在串口终端中打印出的信息如下：

1. U-Boot 2012.04.01 (Jan 07 2013 - 13:42:00)
   
2. 
   
3. DRAM:  512 MiB
   
4. WARNING: Caches not enabled
   
5. MMC:   SDHCI: 0
   
6. Using default environment
   
7. 
   
8. In:    serial
   
9. Out:   serial
   
10. Err:   serial
    
11. Net:   zynq_gem
    
12. Hit any key to stop autoboot:  0
    
13. Copying Linux from SD to RAM...
    
14. Device: SDHCI
    
15. Manufacturer ID: 12
    
16. OEM: 3456
    
17. Name: SMI   
    
18. Tran Speed: 25000000
    
19. Rd Block Len: 512
    
20. SD version 2.0
    
21. High Capacity: Yes
    
22. Capacity: 3.7 GiB
    
23. Bus Width: 4-bit
    
24. reading zImage
    
25. 
    
26. 2479640 bytes read
    
27. reading devicetree.dtb
    
28. 
    
29. 9648 bytes read
    
30. reading ramdisk8M.image.gz
    
31. 
    
32. 3694108 bytes read
    
33. ## Starting application at 0x00008000 ...
    
34. Uncompressing Linux... done, booting the kernel.
    
35. [    0.000000] Booting Linux on physical CPU 0
    
36. [    0.000000] Linux version 3.3.0-digilent-12.07-zed-beta (tinghui.wang@DIGILENT_LINUX) (gcc version 4.6.1 (Sourcery CodeBench Lite 2011.09-50) ) #2 SMP PREEMPT Thu Jul 12 21:01:42 PDT 2012
    
37. [    0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
    
38. [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    
39. [    0.000000] Machine: Xilinx Zynq Platform, model: Xilinx Zynq ZED
    
40. [    0.000000] bootconsole [earlycon0] enabled
    
41. [    0.000000] Memory policy: ECC disabled, Data cache writealloc
    
42. [    0.000000] BUG: mapping for 0xf8f00000 at 0xfe00c000 out of vmalloc space
    
43. [    0.000000] BUG: mapping for 0xe0000000 at 0xfe000000 out of vmalloc space
    
44. [    0.000000] BUG: mapping for 0xffff1000 at 0xfe200000 out of vmalloc space
    
45. [    0.000000] PERCPU: Embedded 7 pages/cpu @c148b000 s5696 r8192 d14784 u32768
    
46. [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 125824
    
47. [    0.000000] Kernel command line: console=ttyPS0,115200 root=/dev/ram rw initrd=0x800000,8M earlyprintk rootwait devtmpfs.mount=1
    
48. [    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
    
49. [    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
    
50. [    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
    
51. [    0.000000] Memory: 240MB 256MB = 496MB total
    
52. [    0.000000] Memory: 489848k/489848k available, 34440k reserved, 0K highmem
    
53. [    0.000000] Virtual kernel memory layout:
    
54. [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    
55. [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    
56. [    0.000000]     vmalloc : 0xe0800000 - 0xfd000000   ( 456 MB)
    
57. [    0.000000]     lowmem  : 0xc0000000 - 0xe0000000   ( 512 MB)
    
58. [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    
59. [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
    
60. [    0.000000]       .text : 0xc0008000 - 0xc042f040   (4253 kB)
    
61. [    0.000000]       .init : 0xc0430000 - 0xc0456640   ( 154 kB)
    
62. [    0.000000]       .data : 0xc0458000 - 0xc0485dc0   ( 184 kB)
    
63. [    0.000000]        .bss : 0xc0485de4 - 0xc049d734   (  95 kB)
    
64. [    0.000000] Preemptible hierarchical RCU implementation.
    
65. [    0.000000]  Verbose stalled-CPUs detection is disabled.
    
66. [    0.000000] NR_IRQS:128
    
67. [    0.000000] xlnx,ps7-ttc-1.00.a #0 at 0xe0800000, irq=43
    
68. [    0.000000] Console: colour dummy device 80x30
    
69. [    0.000000] Calibrating delay loop... 1332.01 BogoMIPS (lpj=6660096)
    
70. [    0.090000] pid_max: default: 32768 minimum: 301
    
71. [    0.090000] Mount-cache hash table entries: 512
    
72. [    0.090000] CPU: Testing write buffer coherency: ok
    
73. [    0.100000] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
    
74. [    0.100000] smp_twd: clock not found: -2
    
75. [    0.110000] Calibrating local timer... 333.57MHz.
    
76. [    0.170000] hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
    
77. [    0.170000] Setting up static identity map for 0x2f8d48 - 0x2f8d7c
    
78. [    0.270000] CPU1: Booted secondary processor
    
79. [    0.360000] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
    
80. [    0.360000] Brought up 2 CPUs
    
81. [    0.360000] SMP: Total of 2 processors activated (2664.03 BogoMIPS).
    
82. [    0.370000] devtmpfs: initialized
    
83. [    0.370000] ------------[ cut here ]------------
    
84. [    0.380000] WARNING: at arch/arm/mm/dma-mapping.c:198 consistent_init+0x70/0x104()
    
85. [    0.380000] Modules linked in:
    
86. [    0.390000] [<c0012920>] (unwind_backtrace+0x0/0xe0) from [<c001e924>] (warn_slowpath_common+0x4c/0x64)
    
87. [    0.400000] [<c001e924>] (warn_slowpath_common+0x4c/0x64) from [<c001e954>] (warn_slowpath_null+0x18/0x1c)
    
88. [    0.410000] [<c001e954>] (warn_slowpath_null+0x18/0x1c) from [<c04345a8>] (consistent_init+0x70/0x104)
    
89. [    0.420000] [<c04345a8>] (consistent_init+0x70/0x104) from [<c000858c>] (do_one_initcall+0x90/0x160)
    
90. [    0.420000] [<c000858c>] (do_one_initcall+0x90/0x160) from [<c043085c>] (kernel_init+0x84/0x128)
    
91. [    0.430000] [<c043085c>] (kernel_init+0x84/0x128) from [<c000dfcc>] (kernel_thread_exit+0x0/0x8)
    
92. [    0.440000] ---[ end trace 1b75b31a2719ed1c ]---
    
93. [    0.450000] ------------[ cut here ]------------
    
94. [    0.450000] WARNING: at arch/arm/mm/dma-mapping.c:198 consistent_init+0x70/0x104()
    
95. [    0.460000] Modules linked in:
    
96. [    0.460000] [<c0012920>] (unwind_backtrace+0x0/0xe0) from [<c001e924>] (warn_slowpath_common+0x4c/0x64)
    
97. [    0.470000] [<c001e924>] (warn_slowpath_common+0x4c/0x64) from [<c001e954>] (warn_slowpath_null+0x18/0x1c)
    
98. [    0.480000] [<c001e954>] (warn_slowpath_null+0x18/0x1c) from [<c04345a8>] (consistent_init+0x70/0x104)
    
99. [    0.490000] [<c04345a8>] (consistent_init+0x70/0x104) from [<c000858c>] (do_one_initcall+0x90/0x160)
    
100. [    0.500000] [<c000858c>] (do_one_initcall+0x90/0x160) from [<c043085c>] (kernel_init+0x84/0x128)
     
101. [    0.510000] [<c043085c>] (kernel_init+0x84/0x128) from [<c000dfcc>] (kernel_thread_exit+0x0/0x8)
     
102. [    0.520000] ---[ end trace 1b75b31a2719ed1d ]---
     
103. [    0.520000] NET: Registered protocol family 16
     
104. [    0.540000] L310 cache controller enabled
     
105. [    0.540000] l2x0: 8 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x72360000, Cache size: 524288 B
     
106. [    0.550000] registering platform device 'pl330' id 0
     
107. [    0.550000] registering platform device 'arm-pmu' id 0
     
108. [    0.560000]
     
109. [    0.560000] ###############################################
     
110. [    0.560000] #                                             #
     
111. [    0.570000] #                Board ZED Init               #
     
112. [    0.570000] #                                             #
     
113. [    0.580000] ###############################################
     
114. [    0.580000]
     
115. [    0.590000] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
     
116. [    0.590000] hw-breakpoint: maximum watchpoint size is 4 bytes.
     
117. [    0.620000] xslcr xslcr.0: at 0xF8000000 mapped to 0xE0808000
     
118. [    0.640000] bio: create slab <bio-0> at 0
     
119. [    0.640000] gpiochip_add: registered GPIOs 0 to 245 on device: xgpiops
     
120. [    0.650000] xgpiops e000a000.ps7-gpio: gpio at 0xe000a000 mapped to 0xe080a000
     
121. [    0.650000] SCSI subsystem initialized
     
122. [    0.660000] usbcore: registered new interface driver usbfs
     
123. [    0.660000] usbcore: registered new interface driver hub
     
124. [    0.670000] usbcore: registered new device driver usb
     
125. [    0.670000] Advanced Linux Sound Architecture Driver Version 1.0.24.
     
126. [    0.680000] Switching to clocksource xttcpss_timer1
     
127. [    0.690000] NET: Registered protocol family 2
     
128. [    0.690000] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
     
129. [    0.700000] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
     
130. [    0.700000] TCP bind hash table entries: 16384 (order: 5, 196608 bytes)
     
131. [    0.710000] TCP: Hash tables configured (established 16384 bind 16384)
     
132. [    0.720000] TCP reno registered
     
133. [    0.720000] UDP hash table entries: 256 (order: 1, 8192 bytes)
     
134. [    0.730000] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
     
135. [    0.730000] NET: Registered protocol family 1
     
136. [    0.740000] Trying to unpack rootfs image as initramfs...
     
137. [    0.740000] rootfs image is not initramfs (no cpio magic); looks like an initrd
     
138. [    0.780000] Freeing initrd memory: 8192K
     
139. [    0.780000] xscugtimer xscugtimer.0: ioremap fe00c200 to e080c200 with size 400
     
140. [    0.790000] pl330 dev 0 probe success
     
141. [    0.800000] msgmni has been set to 972
     
142. [    0.800000] io scheduler noop registered
     
143. [    0.800000] io scheduler deadline registered
     
144. [    0.800000] io scheduler cfq registered (default)
     
145. [    0.810000] e0001?俽聮倐倐console [ttyPS0] enabled, bootconsole disabled
     
146. [    0.820000] console [ttyPS0] enabled, bootconsole disabled
     
147. [    0.820000] xdevcfg f8007000.ps7-dev-cfg: ioremap f8007000 to e0810000 with size 1000
     
148. [    0.840000] [drm] Initialized drm 1.1.0 20060810
     
149. [    0.850000] brd: module loaded
     
150. [    0.860000] loop: module loaded
     
151. [    0.860000] xqspips e000d000.ps7-qspi: at 0xE000D000 mapped to 0xE0812000, irq=51
     
152. [    0.870000] GEM: BASEADDRESS hw: e000b000 virt: e0814000
     
153. [    0.880000] XEMACPS mii bus: probed
     
154. [    0.880000] eth0, pdev->id -1, baseaddr 0xe000b000, irq 54
     
155. [    0.890000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
     
156. [    0.890000] usb_hcd_xusbps_probe: No OTG assigned!
     
157. [    0.900000] usb_hcd_xusbps_probe: OTG now assigned!
     
158. [    0.900000] xusbps-ehci xusbps-ehci.0: Xilinx PS USB EHCI Host Controller
     
159. [    0.910000] xusbps-ehci xusbps-ehci.0: new USB bus registered, assigned bus number 1
     
160. [    0.950000] xusbps-ehci xusbps-ehci.0: irq 53, io mem 0x00000000
     
161. [    0.970000] xusbps-ehci xusbps-ehci.0: USB 2.0 started, EHCI 1.00
     
162. [    0.970000] hub 1-0:1.0: USB hub found
     
163. [    0.980000] hub 1-0:1.0: 1 port detected
     
164. [    0.980000] Initializing USB Mass Storage driver...
     
165. [    0.980000] usbcore: registered new interface driver usb-storage
     
166. [    0.990000] USB Mass Storage support registered.
     
167. [    1.000000] Xilinx PS USB Device Controller driver (Apr 01, 2011)
     
168. [    1.000000] mousedev: PS/2 mouse device common for all mice
     
169. [    1.010000] Linux video capture interface: v2.00
     
170. [    1.010000] gspca_main: v2.14.0 registered
     
171. [    1.020000] usbcore: registered new interface driver uvcvideo
     
172. [    1.020000] USB Video Class driver (1.1.1)
     
173. [    1.030000] sdhci: Secure Digital Host Controller Interface driver
     
174. [    1.030000] No connectors reported connected with modes
     
175. [    1.030000] [drm] Cannot find any crtc or sizes - going 1024x768
     
176. [    1.040000] drivers/gpu/drm/analog/analog_drm_fbdev.c:analog_drm_fbdev_probe[241]
     
177. [    1.050000] sdhci: Copyright(c) Pierre Ossman
     
178. [    1.050000] sdhci-pltfm: SDHCI platform and OF driver helper
     
179. [    1.070000] usbcore: registered new interface driver usbhid
     
180. [    1.070000] usbhid: USB HID core driver
     
181. [    1.070000] adv7511 0-0039: Failed to add route DAI IN->TMDS
     
182. [    1.090000] Console: switching to colour frame buffer device 128x48
     
183. [    1.090000] asoc: adv7511 <-> 75c00000.axi-spdif-tx mapping ok
     
184. [    1.090000] axi-spdif 75c00000.axi-spdif-tx: Failed to set DAI format: -22
     
185. [    1.100000] ALSA device list:
     
186. [    1.100000]   #0: HDMI monitor
     
187. [    1.100000] TCP cubic registered
     
188. [    1.100000] NET: Registered protocol family 17
     
189. [    1.100000] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
     
190. [    1.100000] Registering SWP/SWPB emulation handler
     
191. [    1.160000] fb0:  frame buffer device
     
192. [    1.160000] drm: registered panic notifier
     
193. [    1.160000] registered taskstats version 1
     
194. [    1.160000] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
     
195. [    1.180000] RAMDISK: gzip image found at block 00110530 on minor 0
     
196. [    1.490000] EXT4-fs (ram0): couldn't mount as ext3 due to feature incompatibilities
     
197. [    1.560000] EXT4-fs (ram0): mounting ext2 file system using the ext4 subsystem
     
198. [    1.560000] EXT4-fs (ram0): warning: mounting unchecked fs, running e2fsck is recommended
     
199. [    1.570000] EXT4-fs (ram0): mounted filesystem without journal. Opts: (null)
     
200. [    1.580000] VFS: Mounted root (ext2 filesystem) on device 1:0.
     
201. [    1.580000] devtmpfs: mounted
     
202. [    1.590000] Freeing init memory: 152K
     
203. Starting rcS...
     
204. ++ Mounting filesystem
     
205. ++ Setting up mdev
     
206. ++ Configure static IP 192.168.1.10
     
207. [    1.800000] GEM: lp->tx_bd ffdfb000 lp->tx_bd_dma 18fd8000 lp->tx_skb d82011c0
     
208. [    1.800000] GEM: lp->rx_bd ffdfc000 lp->rx_bd_dma 18fd9000 lp->rx_skb d82012c0
     
209. [    1.810000] GEM: MAC 0x00350a00, 0x00002201, 00:0a:35:00:01:22
     
210. [    1.820000] GEM: phydev d8b83800, phydev->phy_id 0x1410dd1, phydev->addr 0x0
     
211. [    1.830000] eth0, phy_addr 0x0, phy_id 0x01410dd1
     
212. [    1.830000] eth0, attach [Marvell 88E1510] phy driver
     
213. ++ Starting telnet daemon
     
214. ++ Starting http daemon
     
215. ++ Starting ftp daemon
     
216. ++ Starting dropbear (ssh) daemon
     
217. ++ Starting OLED Display
     
218. [    1.880000] pmodoled-gpio-spi [zed_oled] SPI Probing
     
219. ++ Exporting LEDs & SWs
     
220. rcS Complete
     
221. zynq>
     

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        以下介绍一下生成Linux应用，并且在ZedBooard执行：
        在EDK中打开配置完的系统，然后点击Export Design打开SDK，如图2所示，选择Include bitstream and BMM file

图2

        在SDK中新建xilinx c project，如图3所示。

图3

        Target Software中选择Linux，则可以生成基于Linux的应用工程，选择Linux Hello World模板工程。

图4

        修改Helloworld.c中代码，如下：

1. #include <stdio.h>
   
2. 
   
3. int main()
   
4. {
   
5.     printf("ZedBoard Test! - Hoki 2013.02.26\n");
   
6. 
   
7.     return 0;
   
8. }
   

复制代码

        Build Project，在./Debug目录下生成.elf可执行文件，如图5所示

图5

        然后通过网口终端连接ZedBoard，首先需要将PC本地网卡IP修改为与ZedBoard同一段，通过ifconfig查看ZedBoard的IP为192.168.1.10，将PC的IP设置为192.168.1.11，如图6，连上网口口，成功连接。

图6

        通过FTP上传生成的.eif文件，并且执行，成功打印出信息，如图7所示，在第一次执行程序是被告知/bin/sh: ./linux_hello_world_0.elf: Permission denied，在网上搜索了些解决方法，是文件权限不够，先用chmod命令改变文件权限，然后.eif文件可正确执行了。

图7

fenlido

zyffpga

讲的挺不错的，我需要好好学习下