开发者分享 | 有关 Zynq UltraScale+ RFSoC 的 AXI CDMA Linux 用户空间示例

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本篇博文将为您演示如何创建 AXI CDMA Linux 用户空间示例应用。

示例设计将在 Zynq UltraScale+ RFSoC ZCU111 评估板上实现通过 AXI CDMA 把数据从 PS DDR 传输至 AXI BRAM。

适用平台

Vivado 和 PetaLinux 2019.2。

Zynq UltraScale+ RFSoC ZCU111 评估板

启动模式：JTAG，SD

模块框图

Vivado步骤

步骤 1：基于ZCU111 评估版创建一个工程，并根据上图中的模块设计完成相应的模块设计。

步骤 2：按下列设置来配置 AXI CDMA：

步骤 3：成功完成后，选择“验证设计 (Validate design)”以验证设计，并检查地址编辑器。

步骤4：创建整个模块设计的顶层文件并生成比特流。

步骤 5：导出硬件设计以获取 XSA 文件。

PetaLinux步骤

以下步骤用于生成启动镜像和 Linux 用户空间应用。

步骤 1：

使用以下命令和随附内容 (axicdma.c) 创建 AXI CDMA 用户空间应用。

vim axicmda.c

步骤 2:

petalinux-create -t project -n bram --template zynqMP

步骤3：

petalinux-config --v --get-hw-description=<hdf directory>

步骤4：

在 system-user.dtsi 文件中添加以下更改以禁用 CDMA 驱动并保留内存。

/include/ "system-conf.dtsi"
/ {
#address-cells = <2>;
#size-cells = <2>;
memory {
device_type = "memory";
reg = <0x0 0x0 0x0 0x80000000>, <0x0 0xA0000000 0x0 0x40000>, <0x00000008 0x00000000 0x0 0x80000000>;
};
reserved-memory {
ranges;
reserved {
reg = <0x0 0xa0000000 0x0 0x40000>;
};
};

};
&axi_bram_ctrl_1 {
status = "disabled";
};

&axi_cdma_0 {
status = "disabled";
};

步骤 5：

petalinux-config -c kernel

然后，按如下方式操作：

Kernel hacking --->[ ] Filter access to /dev/mem --> Save & exit

步骤 6：

petalinux-build

步骤 7：

petalinux-package --boot --fsbl images/linux/zynqmp_fsbl.elf --pmufw images/linux/pmufw.elf --fpga images/linux/system.bit --u-boot images/linux/u-boot.elf --force

步骤 8：

将 BOOT.bin 和 image.ub 文件与测试应用二进制文件一起复制到 SD 卡。

步骤 9：

启动评估板，并运行随附的应用 (axicmda.c)。

运行设计

要运行设计，请首先连接到 ZCU111 评估板并从 SD 卡启动镜像，然后运行二进制应用文件。

控制台输出

/dev/mem opened.
BRAM Memory mapped at address 0x7fb5339000.
PSDDR Memory mapped at address 0x7fb5192000.
CDMA Memory mapped at address 0x7fb5336000.
Input : value in PSDDR 0 : value in BRAM 1179403647
Input : value in PSDDR 1 : value in BRAM 65794
Input : value in PSDDR 2 : value in BRAM 0
Input : value in PSDDR 3 : value in BRAM 0
Input : value in PSDDR 4 : value in BRAM 11993091
Input : value in PSDDR 5 : value in BRAM 1
Input : value in PSDDR 6 : value in BRAM 13128
Input : value in PSDDR 7 : value in BRAM 0
Input : value in PSDDR 8 : value in BRAM 64
Input : value in PSDDR 9 : value in BRAM 0
Input : value in PSDDR 10 : value in BRAM 44872
Input : value in PSDDR 11 : value in BRAM 0
Input : value in PSDDR 12 : value in BRAM 0
Input : value in PSDDR 13 : value in BRAM 3670080
Input : value in PSDDR 14 : value in BRAM 4194313
Input : value in PSDDR 15 : value in BRAM 1638426
Input : value in PSDDR 16 : value in BRAM 6
Input : value in PSDDR 17 : value in BRAM 4
Input : value in PSDDR 18 : value in BRAM 64
Input : value in PSDDR 19 : value in BRAM 0
Input : value in PSDDR 20 : value in BRAM 64
Input : value in PSDDR 21 : value in BRAM 0
Input : value in PSDDR 22 : value in BRAM 64
Input : value in PSDDR 23 : value in BRAM 0
Input : value in PSDDR 24 : value in BRAM 504
Input : value in PSDDR 25 : value in BRAM 0
Input : value in PSDDR 26 : value in BRAM 504
Input : value in PSDDR 27 : value in BRAM 0
Input : value in PSDDR 28 : value in BRAM 8
Input : value in PSDDR 29 : value in BRAM 0
Input : value in PSDDR 30 : value in BRAM 3
Input : value in PSDDR 31 : value in BRAM 4
Input : value in PSDDR 32 : value in BRAM 568
Input : value in PSDDR 33 : value in BRAM 0
Input : value in PSDDR 34 : value in BRAM 568
Input : value in PSDDR 35 : value in BRAM 0
Input : value in PSDDR 36 : value in BRAM 568
Input : value in PSDDR 37 : value in BRAM 0
Input : value in PSDDR 38 : value in BRAM 27
Input : value in PSDDR 39 : value in BRAM 0
Input : value in PSDDR 40 : value in BRAM 27
Input : value in PSDDR 41 : value in BRAM 0
Input : value in PSDDR 42 : value in BRAM 1
Input : value in PSDDR 43 : value in BRAM 0
Input : value in PSDDR 44 : value in BRAM 1
Input : value in PSDDR 45 : value in BRAM 5
Input : value in PSDDR 46 : value in BRAM 0
Input : value in PSDDR 47 : value in BRAM 0
Input : value in PSDDR 48 : value in BRAM 0
Input : value in PSDDR 49 : value in BRAM 0
Input : value in PSDDR 50 : value in BRAM 0
Input : value in PSDDR 51 : value in BRAM 0
Input : value in PSDDR 52 : value in BRAM 37116
Input : value in PSDDR 53 : value in BRAM 0
Input : value in PSDDR 54 : value in BRAM 37116
Input : value in PSDDR 55 : value in BRAM 0
Input : value in PSDDR 56 : value in BRAM 65536
Input : value in PSDDR 57 : value in BRAM 0
Input : value in PSDDR 58 : value in BRAM 1
Input : value in PSDDR 59 : value in BRAM 6
Input : value in PSDDR 60 : value in BRAM 39544
Input : value in PSDDR 61 : value in BRAM 0
Input : value in PSDDR 62 : value in BRAM 105080
Input : value in PSDDR 63 : value in BRAM 0
Input : value in PSDDR 64 : value in BRAM 105080
Input : value in PSDDR 65 : value in BRAM 0
Input : value in PSDDR 66 : value in BRAM 5072
Input : value in PSDDR 67 : value in BRAM 0
Input : value in PSDDR 68 : value in BRAM 6168
Input : value in PSDDR 69 : value in BRAM 0
Input : value in PSDDR 70 : value in BRAM 65536
Input : value in PSDDR 71 : value in BRAM 0
Input : value in PSDDR 72 : value in BRAM 2
Input : value in PSDDR 73 : value in BRAM 6
Input : value in PSDDR 74 : value in BRAM 39560
Input : value in PSDDR 75 : value in BRAM 0
Input : value in PSDDR 76 : value in BRAM 105096
Input : value in PSDDR 77 : value in BRAM 0
Input : value in PSDDR 78 : value in BRAM 105096
Input : value in PSDDR 79 : value in BRAM 0
Input : value in PSDDR 80 : value in BRAM 512
Input : value in PSDDR 81 : value in BRAM 0
Input : value in PSDDR 82 : value in BRAM 512
Input : value in PSDDR 83 : value in BRAM 0
Input : value in PSDDR 84 : value in BRAM 8
Input : value in PSDDR 85 : value in BRAM 0
Input : value in PSDDR 86 : value in BRAM 4
Input : value in PSDDR 87 : value in BRAM 4
Input : value in PSDDR 88 : value in BRAM 596
Input : value in PSDDR 89 : value in BRAM 0
Input : value in PSDDR 90 : value in BRAM 596
Input : value in PSDDR 91 : value in BRAM 0
Input : value in PSDDR 92 : value in BRAM 596
Input : value in PSDDR 93 : value in BRAM 0
Input : value in PSDDR 94 : value in BRAM 68
Input : value in PSDDR 95 : value in BRAM 0
Input : value in PSDDR 96 : value in BRAM 68
Input : value in PSDDR 97 : value in BRAM 0
Input : value in PSDDR 98 : value in BRAM 4
Input : value in PSDDR 99 : value in BRAM 0
control reg:0x00000000
status reg:0x00000002
all interrupts masked...
control reg:0x00005000
status reg:0x00000002
Writing source address
Source addr reg:0x04000000
status reg:0x00000002
Writing destination address
Dest addr reg:0xa0000000
status reg:0x00000002
Writing transfer length...
DMA transfer is completed
length reg:0x00000190
status reg:0x00001002
Output : value in PSDDR 0 : value in BRAM 0
Output : value in PSDDR 1 : value in BRAM 1
Output : value in PSDDR 2 : value in BRAM 2
Output : value in PSDDR 3 : value in BRAM 3
Output : value in PSDDR 4 : value in BRAM 4
Output : value in PSDDR 5 : value in BRAM 5
Output : value in PSDDR 6 : value in BRAM 6
Output : value in PSDDR 7 : value in BRAM 7
Output : value in PSDDR 8 : value in BRAM 8
Output : value in PSDDR 9 : value in BRAM 9
Output : value in PSDDR 10 : value in BRAM 10
Output : value in PSDDR 11 : value in BRAM 11
Output : value in PSDDR 12 : value in BRAM 12
Output : value in PSDDR 13 : value in BRAM 13
Output : value in PSDDR 14 : value in BRAM 14
Output : value in PSDDR 15 : value in BRAM 15
Output : value in PSDDR 16 : value in BRAM 16
Output : value in PSDDR 17 : value in BRAM 17
Output : value in PSDDR 18 : value in BRAM 18
Output : value in PSDDR 19 : value in BRAM 19
Output : value in PSDDR 20 : value in BRAM 20
Output : value in PSDDR 21 : value in BRAM 21
Output : value in PSDDR 22 : value in BRAM 22
Output : value in PSDDR 23 : value in BRAM 23
Output : value in PSDDR 24 : value in BRAM 24
Output : value in PSDDR 25 : value in BRAM 25
Output : value in PSDDR 26 : value in BRAM 26
Output : value in PSDDR 27 : value in BRAM 27
Output : value in PSDDR 28 : value in BRAM 28
Output : value in PSDDR 29 : value in BRAM 29
Output : value in PSDDR 30 : value in BRAM 30
Output : value in PSDDR 31 : value in BRAM 31
Output : value in PSDDR 32 : value in BRAM 32
Output : value in PSDDR 33 : value in BRAM 33
Output : value in PSDDR 34 : value in BRAM 34
Output : value in PSDDR 35 : value in BRAM 35
Output : value in PSDDR 36 : value in BRAM 36
Output : value in PSDDR 37 : value in BRAM 37
Output : value in PSDDR 38 : value in BRAM 38
Output : value in PSDDR 39 : value in BRAM 39
Output : value in PSDDR 40 : value in BRAM 40
Output : value in PSDDR 41 : value in BRAM 41
Output : value in PSDDR 42 : value in BRAM 42
Output : value in PSDDR 43 : value in BRAM 43
Output : value in PSDDR 44 : value in BRAM 44
Output : value in PSDDR 45 : value in BRAM 45
Output : value in PSDDR 46 : value in BRAM 46
Output : value in PSDDR 47 : value in BRAM 47
Output : value in PSDDR 48 : value in BRAM 48
Output : value in PSDDR 49 : value in BRAM 49
Output : value in PSDDR 50 : value in BRAM 50
Output : value in PSDDR 51 : value in BRAM 51
Output : value in PSDDR 52 : value in BRAM 52
Output : value in PSDDR 53 : value in BRAM 53
Output : value in PSDDR 54 : value in BRAM 54
Output : value in PSDDR 55 : value in BRAM 55
Output : value in PSDDR 56 : value in BRAM 56
Output : value in PSDDR 57 : value in BRAM 57
Output : value in PSDDR 58 : value in BRAM 58
Output : value in PSDDR 59 : value in BRAM 59
Output : value in PSDDR 60 : value in BRAM 60
Output : value in PSDDR 61 : value in BRAM 61
Output : value in PSDDR 62 : value in BRAM 62
Output : value in PSDDR 63 : value in BRAM 63
Output : value in PSDDR 64 : value in BRAM 64
Output : value in PSDDR 65 : value in BRAM 65
Output : value in PSDDR 66 : value in BRAM 66
Output : value in PSDDR 67 : value in BRAM 67
Output : value in PSDDR 68 : value in BRAM 68
Output : value in PSDDR 69 : value in BRAM 69
Output : value in PSDDR 70 : value in BRAM 70
Output : value in PSDDR 71 : value in BRAM 71
Output : value in PSDDR 72 : value in BRAM 72
Output : value in PSDDR 73 : value in BRAM 73
Output : value in PSDDR 74 : value in BRAM 74
Output : value in PSDDR 75 : value in BRAM 75
Output : value in PSDDR 76 : value in BRAM 76
Output : value in PSDDR 77 : value in BRAM 77
Output : value in PSDDR 78 : value in BRAM 78
Output : value in PSDDR 79 : value in BRAM 79
Output : value in PSDDR 80 : value in BRAM 80
Output : value in PSDDR 81 : value in BRAM 81
Output : value in PSDDR 82 : value in BRAM 82
Output : value in PSDDR 83 : value in BRAM 83
Output : value in PSDDR 84 : value in BRAM 84
Output : value in PSDDR 85 : value in BRAM 85
Output : value in PSDDR 86 : value in BRAM 86
Output : value in PSDDR 87 : value in BRAM 87
Output : value in PSDDR 88 : value in BRAM 88
Output : value in PSDDR 89 : value in BRAM 89
Output : value in PSDDR 90 : value in BRAM 90
Output : value in PSDDR 91 : value in BRAM 91
Output : value in PSDDR 92 : value in BRAM 92
Output : value in PSDDR 93 : value in BRAM 93
Output : value in PSDDR 94 : value in BRAM 94
Output : value in PSDDR 95 : value in BRAM 95
Output : value in PSDDR 96 : value in BRAM 96
Output : value in PSDDR 97 : value in BRAM 97
Output : value in PSDDR 98 : value in BRAM 98
Output : value in PSDDR 99 : value in BRAM 99
Transmitted Data successfully
root@cdma_proj:~#