一步一步学ZedBoard & Zynq(六)：在ZedBoard上运行linux并编写linux...

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一步一步学ZedBoard & Zynq(六)：在ZedBoard上运行linux并编写linux下的应用程序HelloWorld

转自博客：@超群天晴 http://www.cnblogs.com/surpassal/  

从本小节开始，讲着重介绍Zedboard上的嵌入式linux应用，包括使用SDK设计最简单的linux应用程序、linux交叉编译环境搭建、设备驱动编写等内容。


本小节使用的linux系统是Digilent官方提供的OOB设计，它是Digilent官网给出的一个完整的、Zedboard可运行的linux系统，包含了Zedboard上的几个重要的设备驱动如串口、USB、以太网、OLED、HDMI等。当linux在Zedboard上运行起来后，Zedboard就是一个小型的嵌入式系统，使用SDK及Xilinx ARM Linux工具链编译生成的可执行文件可以在这个系统执行。


更多更新请关注我的博客：@超群天晴 http://www.cnblogs.com/surpassal/


硬件平台：Digilent ZedBoard

开发环境：Windows XP 32 bit

软件： SDK 14.2

一、获取Zedboard可运行的linux

Digilent官网给出Zedboard的可运行linux设计ZedBoard_OOB_Design包，可从http://www.digilentinc.com/Data/ ... oard_OOB_Design.zip获取，下载后解压，可以看到包的结构和内容：

1. boot_image目录:
   
2. -- system.bit – 配置FPGA的bit文件
   
3. -- u-boot.elf – 引导linux需要的Second-Stage boot loader
   
4. -- zynq_fsbl.elf – 配置ARM PS系统的First-Stage boot loader(FSBL)
   
5. doc目录:
   
6. -- README.txt – 说明文件
   
7. hw目录:
   
8. -- EDK 14.1版本的XPS工程，用来生成硬件文件和bit文件
   
9. linux目录:
   
10. -- devicetree_ramdisk.dts – 设备树源代码
    
11. -- .config – Linux内核配置文件，用来生成zImage
    
12. sd_image目录:
    
13. -- BOOT.BIN – 使用boot_images中的三个文件生成的Zynq配置文件
    
14. -- devicetree_ramdisk.dtb – 编译后的设备树文件
    
15. -- ramdisk8M.image.gz – 编译后的文件系统
    
16. -- README – 介绍如何运行OOB设计的说明文档
    
17. -- zImage – 编译后的内核
    
18. sw目录:
    
19. --硬件配置
    
20. --FSBL源代码

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其中sd_image目录中包含了ZedBoard上能够运行linux的所有文件。将SD卡格式化为Fat32，把sd_image目录文件拷贝到SD卡根目录下；然后将JP7~JP11设置为SD卡启动模式，将JP2短路，JP3断开，这样可以下一步我们可以把U盘作为USB 从设备挂载到Zedboard上。

Zedboard的连接和短路块设置

上电后，等待ARM PS的配置、FPGA的配置(蓝色LED DONE 亮起)，之后开始引导Linux系统了。可以从超级终端上看到一系列的引导信息：

1. U-Boot 2012.04.01-00297-gc319bf9-dirty (Sep 13 2012 - 09:30:49)
   
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_gemHit any key to stop autoboot:  0
    
12. Copying Linux from SD to RAM...
    
13. Device: SDHCI
    
14. Manufacturer ID: 1b
    
15. OEM: 534d
    
16. Name: 00000
    
17. Tran Speed: 25000000
    
18. Rd Block Len: 512
    
19. SD version 1.0
    
20. High Capacity: Yes
    
21. Capacity: 3.7 GiB
    
22. Bus Width: 1-bit
    
23. reading zImage
    
24. 
    
25. 2479640 bytes read
    
26. reading devicetree_ramdisk.dtb
    
27. 
    
28. 5817 bytes read
    
29. reading ramdisk8M.image.gz
    
30. 
    
31. 3694108 bytes read
    
32. ## Starting application at 0x00008000 ...
    
33. Uncompressing Linux... done, booting the kernel.
    
34. [    0.000000] Booting Linux on physical CPU 0
    
35. [    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
    
36. [    0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
    
37. [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    
38. [    0.000000] Machine: Xilinx Zynq Platform, model: Xilinx Zynq ZED
    
39. [    0.000000] bootconsole [earlycon0] enabled
    
40. [    0.000000] Memory policy: ECC disabled, Data cache writealloc
    
41. [    0.000000] BUG: mapping for 0xf8f00000 at 0xfe00c000 out of vmalloc space
    
42. [    0.000000] BUG: mapping for 0xe0000000 at 0xfe000000 out of vmalloc space
    
43. [    0.000000] BUG: mapping for 0xffff1000 at 0xfe200000 out of vmalloc space
    
44. [    0.000000] PERCPU: Embedded 7 pages/cpu @c1489000 s5696 r8192 d14784 u32768
    
45. [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 125824
    
46. [    0.000000] Kernel command line: console=ttyPS0,115200 root=/dev/ram rw initrd=0x800000,8M earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=0
    
47. [    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
    
48. [    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
    
49. [    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
    
50. [    0.000000] Memory: 240MB 256MB = 496MB total
    
51. [    0.000000] Memory: 489856k/489856k available, 34432k reserved, 0K highmem
    
52. [    0.000000] Virtual kernel memory layout:
    
53. [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    
54. [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    
55. [    0.000000]     vmalloc : 0xe0800000 - 0xfd000000   ( 456 MB)
    
56. [    0.000000]     lowmem  : 0xc0000000 - 0xe0000000   ( 512 MB)
    
57. [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    
58. [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
    
59. [    0.000000]       .text : 0xc0008000 - 0xc042f040   (4253 kB)
    
60. [    0.000000]       .init : 0xc0430000 - 0xc0456640   ( 154 kB)
    
61. [    0.000000]       .data : 0xc0458000 - 0xc0485dc0   ( 184 kB)
    
62. [    0.000000]        .bss : 0xc0485de4 - 0xc049d734   (  95 kB)
    
63. [    0.000000] Preemptible hierarchical RCU implementation.
    
64. [    0.000000]  Verbose stalled-CPUs detection is disabled.
    
65. [    0.000000] NR_IRQS:128
    
66. [    0.000000] xlnx,ps7-ttc-1.00.a #0 at 0xe0800000, irq=43
    
67. [    0.000000] Console: colour dummy device 80x30
    
68. [    0.000000] Calibrating delay loop... 1594.16 BogoMIPS (lpj=7970816)
    
69. [    0.090000] pid_max: default: 32768 minimum: 301
    
70. [    0.090000] Mount-cache hash table entries: 512
    
71. [    0.090000] CPU: Testing write buffer coherency: ok
    
72. [    0.090000] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
    
73. [    0.100000] smp_twd: clock not found: -2
    
74. [    0.100000] Calibrating local timer... 399.36MHz.
    
75. [    0.170000] hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
    
76. [    0.170000] Setting up static identity map for 0x2f8d48 - 0x2f8d7c
    
77. [    0.270000] CPU1: Booted secondary processor
    
78. [    0.310000] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
    
79. [    0.310000] Brought up 2 CPUs
    
80. [    0.310000] SMP: Total of 2 processors activated (3188.32 BogoMIPS).
    
81. [    0.320000] devtmpfs: initialized
    
82. [    0.320000] ------------[ cut here ]------------
    
83. [    0.320000] WARNING: at arch/arm/mm/dma-mapping.c:198 consistent_init+0x70/0x104()
    
84. [    0.330000] Modules linked in:
    
85. [    0.330000] [<c0012920>] (unwind_backtrace+0x0/0xe0) from [<c001e924>] (warn_slowpath_common+0x4c/0x64)
    
86. [    0.340000] [<c001e924>] (warn_slowpath_common+0x4c/0x64) from [<c001e954>] (warn_slowpath_null+0x18/0x1c)
    
87. [    0.350000] [<c001e954>] (warn_slowpath_null+0x18/0x1c) from [<c04345a8>] (consistent_init+0x70/0x104)
    
88. [    0.360000] [<c04345a8>] (consistent_init+0x70/0x104) from [<c000858c>] (do_one_initcall+0x90/0x160)
    
89. [    0.360000] [<c000858c>] (do_one_initcall+0x90/0x160) from [<c043085c>] (kernel_init+0x84/0x128)
    
90. [    0.370000] [<c043085c>] (kernel_init+0x84/0x128) from [<c000dfcc>] (kernel_thread_exit+0x0/0x8)
    
91. [    0.380000] ---[ end trace 1b75b31a2719ed1c ]---
    
92. [    0.380000] ------------[ cut here ]------------
    
93. [    0.390000] WARNING: at arch/arm/mm/dma-mapping.c:198 consistent_init+0x70/0x104()
    
94. [    0.390000] Modules linked in:
    
95. [    0.390000] [<c0012920>] (unwind_backtrace+0x0/0xe0) from [<c001e924>] (warn_slowpath_common+0x4c/0x64)
    
96. [    0.400000] [<c001e924>] (warn_slowpath_common+0x4c/0x64) from [<c001e954>] (warn_slowpath_null+0x18/0x1c)
    
97. [    0.410000] [<c001e954>] (warn_slowpath_null+0x18/0x1c) from [<c04345a8>] (consistent_init+0x70/0x104)
    
98. [    0.420000] [<c04345a8>] (consistent_init+0x70/0x104) from [<c000858c>] (do_one_initcall+0x90/0x160)
    
99. [    0.430000] [<c000858c>] (do_one_initcall+0x90/0x160) from [<c043085c>] (kernel_init+0x84/0x128)
    
100. [    0.430000] [<c043085c>] (kernel_init+0x84/0x128) from [<c000dfcc>] (kernel_thread_exit+0x0/0x8)
     
101. [    0.440000] ---[ end trace 1b75b31a2719ed1d ]---
     
102. [    0.440000] NET: Registered protocol family 16
     
103. [    0.460000] L310 cache controller enabled
     
104. [    0.460000] l2x0: 8 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x72060000, Cache size: 524288 B
     
105. [    0.460000] registering platform device 'pl330' id 0
     
106. [    0.470000] registering platform device 'arm-pmu' id 0
     
107. [    0.470000]
     
108. [    0.470000] ###############################################
     
109. [    0.480000] #                                             #
     
110. [    0.480000] #                Board ZED Init               #
     
111. [    0.480000] #                                             #
     
112. [    0.490000] ###############################################
     
113. [    0.490000]
     
114. [    0.500000] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpointregisters.
     
115. [    0.500000] hw-breakpoint: maximum watchpoint size is 4 bytes.
     
116. [    0.530000] xslcr xslcr.0: at 0xF8000000 mapped to 0xE0808000
     
117. [    0.540000] bio: create slab <bio-0> at 0
     
118. [    0.540000] gpiochip_add: registered GPIOs 0 to 245 on device: xgpiops
     
119. [    0.540000] xgpiops e000a000.gpio: gpio at 0xe000a000 mapped to 0xe080a000
     
120. [    0.550000] SCSI subsystem initialized
     
121. [    0.550000] usbcore: registered new interface driver usbfs
     
122. [    0.560000] usbcore: registered new interface driver hub
     
123. [    0.560000] usbcore: registered new device driver usb
     
124. [    0.570000] Advanced Linux Sound Architecture Driver Version 1.0.24.
     
125. [    0.570000] Switching to clocksource xttcpss_timer1
     
126. [    0.590000] NET: Registered protocol family 2
     
127. [    0.590000] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
     
128. [    0.590000] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
     
129. [    0.600000] TCP bind hash table entries: 16384 (order: 5, 196608 bytes)
     
130. [    0.600000] TCP: Hash tables configured (established 16384 bind 16384)
     
131. [    0.610000] TCP reno registered
     
132. [    0.610000] UDP hash table entries: 256 (order: 1, 8192 bytes)
     
133. [    0.620000] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
     
134. [    0.620000] NET: Registered protocol family 1
     
135. [    0.630000] Trying to unpack rootfs image as initramfs...
     
136. [    0.630000] rootfs image is not initramfs (no cpio magic); looks like an initrd
     
137. [    0.670000] Freeing initrd memory: 8192K
     
138. [    0.670000] xscugtimer xscugtimer.0: ioremap fe00c200 to e0810200 with size 400
     
139. [    0.670000] pl330 dev 0 probe success
     
140. [    0.680000] msgmni has been set to 972
     
141. [    0.680000] io scheduler noop registered
     
142. [    0.680000] io scheduler deadline registered
     
143. [    0.680000] io scheduler cfq registered (default)
     
144. [    0.690000] e00   0.690000] console [ttyPS0] enabled, bootconsole disabled
     
145. [    0.690000] console [ttyPS0] enabled, bootconsole disabled
     
146. [    0.700000] xdevcfg f8007000.devcfg: ioremap f8007000 to e0814000 with size 1000
     
147. [    0.710000] [drm] Initialized drm 1.1.0 20060810
     
148. [    0.720000] brd: module loaded
     
149. [    0.730000] loop: module loaded
     
150. [    0.730000] xqspips e000d000.qspi: at 0xE000D000 mapped to 0xE0816000, irq=51
     
151. [    0.740000] GEM: BASEADDRESS hw: e000b000 virt: e0818000
     
152. [    0.740000] XEMACPS mii bus: probed
     
153. [    0.750000] eth0, pdev->id -1, baseaddr 0xe000b000, irq 54
     
154. [    0.750000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
     
155. [    0.760000] usb_hcd_xusbps_probe: No OTG assigned!
     
156. [    0.760000] usb_hcd_xusbps_probe: OTG now assigned!
     
157. [    0.770000] xusbps-ehci xusbps-ehci.0: Xilinx PS USB EHCI Host Controller
     
158. [    0.770000] xusbps-ehci xusbps-ehci.0: new USB bus registered, assigned bus number 1
     
159. [    0.810000] xusbps-ehci xusbps-ehci.0: irq 53, io mem 0x00000000
     
160. [    0.830000] xusbps-ehci xusbps-ehci.0: USB 2.0 started, EHCI 1.00
     
161. [    0.830000] hub 1-0:1.0: USB hub found
     
162. [    0.830000] hub 1-0:1.0: 1 port detected
     
163. [    0.840000] Initializing USB Mass Storage driver...
     
164. [    0.840000] usbcore: registered new interface driver usb-storage
     
165. [    0.850000] USB Mass Storage support registered.
     
166. [    0.850000] Xilinx PS USB Device Controller driver (Apr 01, 2011)
     
167. [    0.860000] mousedev: PS/2 mouse device common for all mice
     
168. [    0.860000] Linux video capture interface: v2.00
     
169. [    0.870000] gspca_main: v2.14.0 registered
     
170. [    0.870000] usbcore: registered new interface driver uvcvideo
     
171. [    0.870000] USB Video Class driver (1.1.1)
     
172. [    0.880000] WDT OF probe
     
173. [    0.880000] xwdtps f8005000.swdt: Xilinx Watchdog Timer at 0xe081c000 with timeout 10 seconds
     
174. [    0.890000] sdhci: Secure Digital Host Controller Interface driver
     
175. [    0.890000] sdhci: Copyright(c) Pierre Ossman
     
176. [    0.900000] sdhci-pltfm: SDHCI platform and OF driver helper
     
177. [    0.900000] mmc0: Invalid maximum block size, assuming 512 bytes
     
178. [    0.910000] mmc0: SDHCI controller on e0100000.sdhci [e0100000.sdhci] using ADMA
     
179. [    0.910000] usbcore: registered new interface driver usbhid
     
180. [    0.920000] usbhid: USB HID core driver
     
181. [    0.920000] No connectors reported connected with modes
     
182. [    0.930000] adv7511 0-0039: Failed to add route DAI IN->TMDS
     
183. [    0.940000] [drm] Cannot find any crtc or sizes - going 1024x768
     
184. [    0.940000] drivers/gpu/drm/analog/analog_drm_fbdev.c:analog_drm_fbdev_probe[241]
     
185. [    0.960000] asoc: adv7511 <-> 75c00000.axi-spdif-tx mapping ok
     
186. [    0.960000] axi-spdif 75c00000.axi-spdif-tx: Failed to set DAI format: -22
     
187. [    0.980000] ALSA device list:
     
188. [    0.980000]   #0: HDMI monitor
     
189. [    0.980000] TCP cubic registered
     
190. [    0.980000] NET: Registered protocol family 17
     
191. [    0.980000] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
     
192. [    0.980000] Registering SWP/SWPB emulation handler
     
193. [    0.980000] registered taskstats version 1
     
194. [    0.980000] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
     
195. [    0.980000] Console: switching to colour frame buffer device 128x48
     
196. [    1.000000] mmc0: new high speed SDHC card at address 0002
     
197. [    1.030000] fb0:  frame buffer device
     
198. [    1.030000] mmcblk0: mmc0:0002 00000 3.70 GiB
     
199. [    1.040000] drm: registered panic notifier
     
200. [    1.040000] [drm] Initialized analog_drm 1.0.0 20110530 on minor 0
     
201. [    1.050000]  mmcblk0: p1
     
202. [    1.050000] RAMDISK: gzip image found at block 0
     
203. [    1.310000] EXT4-fs (ram0): warning: mounting unchecked fs, running e2fsck is recommended
     
204.   [    1.320000] EXT4-fs (ram0): mounted filesystem without journal. Opts: (null)
     
205. [    1.320000] VFS: Mounted root (ext4 filesystem) on device 1:0.
     
206. [    1.330000] Freeing init memory: 152K
     
207. Starting rcS...
     
208. ++ Mounting filesystem
     
209. ++ Setting up mdev
     
210. ++ Configure static IP 192.168.1.10
     
211. [    1.510000] GEM: lp->tx_bd ffdfb000 lp->tx_bd_dma 181a9000 lp->tx_skb d816b0c0
     
212. [    1.520000] GEM: lp->rx_bd ffdfc000 lp->rx_bd_dma 181a8000 lp->rx_skb d816b1c0
     
213. [    1.520000] GEM: MAC 0x00350a00, 0x00002201, 00:0a:35:00:01:22
     
214. [    1.530000] GEM: phydev d8b81400, phydev->phy_id 0x1410dd1, phydev->addr 0x0
     
215. [    1.540000] eth0, phy_addr 0x0, phy_id 0x01410dd1
     
216. [    1.540000] eth0, attach [Marvell 88E1510] phy driver
     
217. ++ Starting telnet daemon
     
218. ++ Starting http daemon
     
219. ++ Starting ftp daemon
     
220. ++ Starting dropbear (ssh) daemon
     
221. ++ Starting OLED Display
     
222. [    1.580000] pmodoled-gpio-spi [zed_oled] SPI Probing
     
223. [    1.730000] usb 1-1: new high-speed USB device number 2 using xusbps-ehci
     
224. ++ Exporting LEDs & SWs
     
225. rcS Complete
     
226. zynq>

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至此，linux已经在Zedboard上启动起来。从超级终端输出的信息我们打开可以知道，“这个”linux系统的一些基本情况，如8~10行

1. In:    serial
   
2. Out:   serial
   
3. Err:   serial

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输入输出调试信息使用的都是serial，即串口，这里是超级终端，因而超级终端就如同linux系统下的控制台，我们可以键入linux的命令对系统进行操作，例如输入ls命令，可以显示当前目录内容：

其他命令如cd、mkdir、cp、rm等基本命令均可以执行。

77~79行提示信息

1. [    0.270000] CPU1: Booted secondary processor
   
2. [    0.310000] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
   
3. [    0.310000] Brought up 2 CPUs

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可以知道ARM PS的两个CPU均被启动

再如163~171行

1. [    0.840000] Initializing USB Mass Storage driver...
   
2. [    0.840000] usbcore: registered new interface driver usb-storage
   
3. [    0.850000] USB Mass Storage support registered.
   
4. [    0.850000] Xilinx PS USB Device Controller driver (Apr 01, 2011)
   
5. [    0.860000] mousedev: PS/2 mouse device common for all mice
   
6. [    0.860000] Linux video capture interface: v2.00
   
7. [    0.870000] gspca_main: v2.14.0 registered
   
8. [    0.870000] usbcore: registered new interface driver uvcvideo
   
9. [    0.870000] USB Video Class driver (1.1.1)

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可以知道大容量USB设备驱动已经安装，包括PS USB设备等驱动均安装了，因此可以使用U盘、USB键盘、鼠标、摄像头等设备。

二、使用SDK设计linux应用程序

接下来我们就可以像其他的嵌入式linux开发一样来使用Zedboard了。SDK提供了标准可视化的linux-arm交叉编译链，不需要再进行交叉编译环境的搭建。

启动SDK，new->C project，选择工程类型为“Xilinx ARM Linux Executable”，工具链为“Xilinx ARM GNU/Linux Toolchain”

在工程配置选项中，去掉Debug(因为我们不需要进行调试)，只保留Release

工程建立后好，新建main.c文件，修改内容如下：

1. /*
   
2.   * hello.c
   
3.   *
   
4.   *  Created on: 2012-11-8
   
5.   *  @超群天晴 http://www.cnblogs.com/surpassal/
   
6.   */
   
7. 
   
8. #include <stdio.h>
   
9. 
   
10. int main()
    
11. {
    
12.      printf("HelloWorld!\n");
    
13.      printf("This is from Zedboard Linux!\n");
    
14.      printf("2012年11月8日16:43:22 by 超群天晴\n");
    
15.      return 0;
    
16. }

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就是一个简单的从控制台输出helloworld信息。编译后生成了lab_6.elf可执行文件，将其拷贝到了U盘上。

三、运行linux可执行程序

将U盘连接到Zedboard，控制台会提示有USB device连接上，分配给这个设备的名称是sda1

1. zynq> [ 2263.970000] usb 1-1: new high-speed USB device number 2 using xusbps-ehci
   
2. [ 2264.120000] scsi0 : usb-storage 1-1:1.0
   
3. [ 2265.130000] scsi 0:0:0:0: Direct-Access     Generic  Flash Disk       8.07 PQ: 0 ANSI: 4
   
4. [ 2265.140000] sd 0:0:0:0: [sda] 3932160 512-byte logical blocks: (2.01 GB/1.87GiB)
   
5. [ 2265.140000] sd 0:0:0:0: Attached scsi generic sg0 type 0
   
6. [ 2265.150000] sd 0:0:0:0: [sda] Write Protect is off
   
7. [ 2265.150000] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
   
8. [ 2265.170000]  sda: sda1
   
9. [ 2265.180000] sd 0:0:0:0: [sda] Attached SCSI removable disk
   
10. 
    
11. zynq>

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使用mount命令

1. mount /dev/sda1 /mnt/

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将设备挂载到mnt目录下，
输入命令

1. cd /mnt

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切换到mnt目录

输入命令

1. ls

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可以看到目录下有我们刚刚生成的lab_6.elf可执行文件

输入命令

1. ./lab_6.elf

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运行，可以看到执行结果，控制台输出了我们需要的信息

===============================

Digilent官方OOB设计参考：http://www.digilentinc.com/Data/ ... oard_OOB_Design.zip

完整工程下载： lab_6.rar (8.38 KB, 下载次数: 66)

2013-1-7 15:39 上传

点击文件名下载附件


相关阅读：

一步一步学ZedBoard & Zynq(一)：ZedBoard的第一个工程Helloworld

https://www.cirmall.com/bbs/thread-5712-1-1.html

一步一步学ZedBoard & Zynq(二)：使用PL做流水灯

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一步一步学ZedBoard & Zynq(三)：使用自带外设IP让ARM PS访问FPGA

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一步一步学ZedBoard & Zynq(八)：USB摄像头图片采集+QT显示

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sky-Hawk where

我们先做了第一个HELLOworld实验之后
按照步骤进行SD卡引导
上电之后没反应  蓝灯也没亮  终端不打印任何信息