【创龙TLZ7x-EasyEVM评估板】 二、 ZYNQ7020初探

人生如梦_3019120

一、板子上电
可以先预览下文档，这样比较稳妥。光盘目录下用户手册/2-1-开发板快速体验.pdf

上电后，由于没有安装驱动，串口还不能识别。 安装串口驱动后会发现有两个串口，一个是ps端的串口，一个是pl端的串口。

二、uboot

• uboot 输出日志如下：
  

1. U-Boot 2017.01-gf812dfb (Aug 28 2018 - 13:56:47 +0800)
   
2. 
   
3. Model: Zynq ZC702 Development Board
   
4. Board: Xilinx Zynq
   
5. I2C:   ready
   
6. DRAM:  ECC disabled 512 MiB
   
7. MMC:   sdhci_transfer_data: Error detected in status(0x208000)!
   
8. sdhci@e0100000: 0 (SD), sdhci@e0101000: 1 (eMMC)
   
9. SF: Detected n25q256 with page size 256 Bytes, erase size 4 KiB, total 32 MiB
   
10. *** Warning - bad CRC, using default environment
    
11. 
    
12. In:    serial@e0001000
    
13. Out:   serial@e0001000
    
14. Err:   serial@e0001000
    
15. Model: Zynq ZC702 Development Board
    
16. Board: Xilinx Zynq
    
17. Net:   No ethernet found.
    
18. Hit any key to stop autoboot:  0

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    可知 uboot 才用的是比较老的2017年版本。uboot 支持 sd卡和eMMC。

    sdhci_transfer_data: Error detected in status(0x208000)! 可知 mmc 某个设备没有正确识别。

    通过下面操作可知 eMMC 有问题或者板子就没有eMMC。

    mmc 一系列命令简介

1. Zynq> ? mmc
   
2. mmc - MMC sub system
   
3. 
   
4. Usage:
   
5. mmc info - display info of the current MMC device
   
6. mmc read addr blk# cnt
   
7. mmc write addr blk# cnt
   
8. mmc erase blk# cnt
   
9. mmc rescan
   
10. mmc part - lists available partition on current mmc device
    
11. mmc dev [dev] [part] - show or set current mmc device [partition]
    
12. mmc list - lists available devices
    
13. mmc hwpartition [args...] - does hardware partitioning
    
14. arguments (sizes in 512-byte blocks):
    
15.     [user [enh start cnt] [wrrel {on|off}]] - sets user data area attributes
    
16.     [gp1|gp2|gp3|gp4 cnt [enh] [wrrel {on|off}]] - general purpose partition
    
17.     [check|set|complete] - mode, complete set partitioning completed
    
18. WARNING: Partitioning is a write-once setting once it is set to complete.
    
19. Power cycling is required to initialize partitions after set to complete.
    
20. mmc setdsr <value> - set DSR register value
    
21. 
    
22. //查看有哪些mmc 设备。
    
23. Zynq> mmc list
    
24. sdhci@e0100000: 0 (SD)
    
25. sdhci@e0101000: 1 (eMMC)
    
26. 
    
27. //查看 当前mmc 设备分区。
    
28. Zynq> mmc part
    
29. 
    
30. Partition Map for MMC device 0  --   Partition Type: DOS
    
31. 
    
32. Part    Start Sector    Num Sectors     UUID            Type
    
33. 1     2048            6215680         000db5af-01     0c Boot
    
34. 2     6217728         12433408        000db5af-02     83
    
35. 3     18651136        12433408        000db5af-03     83
    
36. 
    
37. // 选择 某个mmc 设备
    
38. Zynq> mmc dev 1
    
39. sdhci_transfer_data: Error detected in status(0x208000)!
    
40. switch to partitions #0, OK
    
41. mmc1(part 0) is current device

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• 板子信息
  

1. arch_number = 0x00000000
   
2. boot_params = 0x00000000
   
3. DRAM bank   = 0x00000000
   
4. -> start    = 0x00000000
   
5. -> size     = 0x20000000
   
6. baudrate    = 115200 bps
   
7. TLB addr    = 0x1FFF0000
   
8. relocaddr   = 0x1FF43000
   
9. reloc off   = 0x1BF43000
   
10. irq_sp      = 0x1EB22ED0
    
11. sp start    = 0x1EB22EC0
    
12. ARM frequency = 666 MHz
    
13. DSP frequency = 0 MHz
    
14. DDR frequency = 533 MHz
    
15. Early malloc usage: 49c / 800

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• uboot 支持命令如下：
  

1. ?       - alias for 'help'
   
2. base    - print or set address offset
   
3. bdinfo  - print Board Info structure
   
4. boot    - boot default, i.e., run 'bootcmd'
   
5. bootd   - boot default, i.e., run 'bootcmd'
   
6. bootefi - Boots an EFI payload from memory
   
7. bootelf - Boot from an ELF image in memory
   
8. bootm   - boot application image from memory
   
9. bootp   - boot image via network using BOOTP/TFTP protocol
   
10. bootvx  - Boot vxWorks from an ELF image
    
11. bootz   - boot Linux zImage image from memory
    
12. clk     - CLK sub-system
    
13. cmp     - memory compare
    
14. coninfo - print console devices and information
    
15. cp      - memory copy
    
16. crc32   - checksum calculation
    
17. dcache  - enable or disable data cache
    
18. dfu     - Device Firmware Upgrade
    
19. dhcp    - boot image via network using DHCP/TFTP protocol
    
20. dm      - Driver model low level access
    
21. echo    - echo args to console
    
22. editenv - edit environment variable
    
23. eeprom  - EEPROM sub-system
    
24. env     - environment handling commands
    
25. exit    - exit script
    
26. ext2load- load binary file from a Ext2 filesystem
    
27. ext2ls  - list files in a directory (default /)
    
28. ext4load- load binary file from a Ext4 filesystem
    
29. ext4ls  - list files in a directory (default /)
    
30. ext4size- determine a file's size
    
31. ext4write- create a file in the root directory
    
32. false   - do nothing, unsuccessfully
    
33. fatinfo - print information about filesystem
    
34. fatload - load binary file from a dos filesystem
    
35. fatls   - list files in a directory (default /)
    
36. fatsize - determine a file's size
    
37. fatwrite- write file into a dos filesystem
    
38. fdt     - flattened device tree utility commands
    
39. fpga    - loadable FPGA image support
    
40. fstype  - Look up a filesystem type
    
41. go      - start application at address 'addr'
    
42. gpio    - query and control gpio pins
    
43. help    - print command description/usage
    
44. i2c     - I2C sub-system
    
45. icache  - enable or disable instruction cache
    
46. iminfo  - print header information for application image
    
47. imxtract- extract a part of a multi-image
    
48. itest   - return true/false on integer compare
    
49. load    - load binary file from a filesystem
    
50. loadb   - load binary file over serial line (kermit mode)
    
51. loads   - load S-Record file over serial line
    
52. loadx   - load binary file over serial line (xmodem mode)
    
53. loady   - load binary file over serial line (ymodem mode)
    
54. loop    - infinite loop on address range
    
55. ls      - list files in a directory (default /)
    
56. md      - memory display
    
57. mdio    - MDIO utility commands
    
58. mii     - MII utility commands
    
59. mm      - memory modify (auto-incrementing address)
    
60. mmc     - MMC sub system
    
61. mmcinfo - display MMC info
    
62. mw      - memory write (fill)
    
63. nfs     - boot image via network using NFS protocol
    
64. nm      - memory modify (constant address)
    
65. ping    - send ICMP ECHO_REQUEST to network host
    
66. printenv- print environment variables
    
67. reset   - Perform RESET of the CPU
    
68. run     - run commands in an environment variable
    
69. save    - save file to a filesystem
    
70. saveenv - save environment variables to persistent storage
    
71. setenv  - set environment variables
    
72. sf      - SPI flash sub-system
    
73. showvar - print local hushshell variables
    
74. size    - determine a file's size
    
75. sleep   - delay execution for some time
    
76. source  - run script from memory
    
77. spl     - SPL configuration
    
78. test    - minimal test like /bin/sh
    
79. tftpboot- boot image via network using TFTP protocol
    
80. tftpput - TFTP put command, for uploading files to a server
    
81. thordown- TIZEN "THOR" downloader
    
82. true    - do nothing, successfully
    
83. usb     - USB sub-system
    
84. usbboot - boot from USB device
    
85. version - print monitor, compiler and linker version

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   可知包含 FAT 格式文件系统操作命令。
        可用于在 uboot 中对 SD 卡或者 EMMC 中存储的文件进行操作。
    可知包含 EXT 格式文件系统操作命令。可以通过如下命令查看

1. Zynq> ext4ls mmc 0:2
   
2.     <DIR>       4096 .
   
3.     <DIR>       4096 ..
   
4.     <DIR>      16384 lost+found
   
5.     <DIR>       4096 etc
   
6.     <DIR>       4096 run
   
7.     <DIR>       4096 bin
   
8.     <DIR>       4096 sys
   
9.     <DIR>       4096 dev
   
10.     <DIR>       4096 proc
    
11.     <DIR>       4096 sbin
    
12.     <DIR>       4096 var
    
13.     <DIR>       4096 www
    
14.     <DIR>       4096 boot
    
15.     <DIR>       4096 usr
    
16.     <DIR>       4096 lib
    
17.     <DIR>       4096 home
    
18.     <SYM>          8 tmp
    
19.     <DIR>       4096 mnt
    
20.     <DIR>       4096 media
    
21.     <DIR>       4096 opt

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   网络命令 ping,nfs,tftpboot。通过这几个命令更新 内核根文件系统还是比较方便的。
三、linux
1.开机日志问题

• 选择EMMC后输出如下
  

1. Device: sdhci@e0101000
   
2. Manufacturer ID: 13
   
3. OEM: 14e
   
4. Name: Q2J54
   
5. Tran Speed: 25000000
   
6. Rd Block Len: 512
   
7. MMC version 5.0
   
8. High Capacity: Yes
   
9. Capacity: 3.6 GiB
   
10. Bus Width: 4-bit
    
11. Erase Group Size: 512 KiB
    
12. HC WP Group Size: 8 MiB
    
13. User Capacity: 3.6 GiB WRREL
    
14. Boot Capacity: 16 MiB ENH
    
15. RPMB Capacity: 512 KiB ENH
    
16. reading uEnv.txt
    
17. ** Unable to read file uEnv.txt **
    
18. Copying Linux from SD to RAM...
    
19. 3806216 bytes read in 414 ms (8.8 MiB/s)
    
20. 18021 bytes read in 94 ms (186.5 KiB/s)
    
21. ## Booting kernel from Legacy Image at 02080000 ...
    
22. Image Name:   Linux-4.9.0-xilinx-gee6f0c1
    
23. Image Type:   ARM Linux Kernel Image (uncompressed)
    
24. Data Size:    3806152 Bytes = 3.6 MiB
    
25. Load Address: 02080000
    
26. Entry Point:  02080000
    
27. Verifying Checksum ... OK
    
28. ## Flattened Device Tree blob at 02000000
    
29. Booting using the fdt blob at 0x2000000
    
30. Loading Kernel Image ... OK
    
31. Loading Device Tree to 1eb1a000, end 1eb21664 ... OK

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• 默认SD卡输出如下：
  

1. Hit any key to stop autoboot:  0
   
2. Device: sdhci@e0100000
   
3. Manufacturer ID: 3
   
4. OEM: 5344
   
5. Name: SS16G
   
6. Tran Speed: 50000000
   
7. Rd Block Len: 512
   
8. SD version 3.0
   
9. High Capacity: Yes
   
10. Capacity: 14.8 GiB
    
11. Bus Width: 4-bit
    
12. Erase Group Size: 512 Bytes
    
13. reading uEnv.txt
    
14. ** Unable to read file uEnv.txt **
    
15. Copying Linux from SD to RAM...
    
16. 3806216 bytes read in 414 ms (8.8 MiB/s)
    
17. 18021 bytes read in 94 ms (186.5 KiB/s)
    
18. ## Booting kernel from Legacy Image at 02080000 ...
    
19. Image Name:   Linux-4.9.0-xilinx-gee6f0c1
    
20. Image Type:   ARM Linux Kernel Image (uncompressed)
    
21. Data Size:    3806152 Bytes = 3.6 MiB
    
22. Load Address: 02080000
    
23. Entry Point:  02080000
    
24. Verifying Checksum ... OK
    
25. ## Flattened Device Tree blob at 02000000
    
26. Booting using the fdt blob at 0x2000000
    
27. Loading Kernel Image ... OK
    
28. Loading Device Tree to 1eb1a000, end 1eb21664 ... OK

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   打印的居然都是 Copying Linux from SD to RAM...
    有如下打印输出还是很不错的。

1. 3806216 bytes read in 414 ms (8.8 MiB/s)
   
2. 18021 bytes read in 94 ms (186.5 KiB/s)

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2.led 控制
底板只有一个是留个PS端控制，通过如下命令可以查看,其中 user-led0 是底板上的led。

1. root@Zynq-Tronlong:~# ls -l /sys/class/leds/
   
2. lrwxrwxrwx    1 root     root             0 Jan  1  1970 disc -> ../../devices/soc0/leds/leds/disc
   
3. lrwxrwxrwx    1 root     root             0 Jan  1  1970 heartbeat -> ../../devices/soc0/leds/leds/hear                                                             tbeat
   
4. lrwxrwxrwx    1 root     root             0 Jan  1  1970 mmc0:: -> ../../devices/soc0/amba/e0100000.sdh                                                             ci/leds/mmc0::
   
5. lrwxrwxrwx    1 root     root             0 Jan  1  1970 mmc1:: -> ../../devices/soc0/amba/e0101000.sdh                                                             ci/leds/mmc1::
   
6. lrwxrwxrwx    1 root     root             0 Jan  1  1970 user-led0 -> ../../devices/soc0/leds/leds/user                                                             -led0

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可以通过下面的命令控制led 亮灭

1. root@Zynq-Tronlong:~# echo 0 > /sys/class/leds/user-led0/brightness
   
2. root@Zynq-Tronlong:~# echo 1 > /sys/class/leds/user-led0/brightness

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3.key 值获取
底板只有一个key提供给了PS端, 通过hexdump 获取按键信息如下。

1. root@Zynq-Tronlong:~# hexdump /dev/input/event0
   
2. 0000000 7351 5cbd 4143 0002 0001 0094 0001 0000
   
3. 0000010 7351 5cbd 4143 0002 0000 0000 0000 0000
   
4. 0000020 7351 5cbd 9c93 0005 0001 0094 0000 0000
   
5. 0000030 7351 5cbd 9c93 0005 0000 0000 0000 0000

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其中 0094 是事件编码与设备树code 一致。其前面的 0001 表示 EV_KEY事件。其后面的 0001/0000 表示按键按下/松开。0x20字节表示一次按键事件。