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=> fdt print /cpus
cpus {
cpu@0 {
compatible = "arm,arm926ejs";
};
};
=>
5.9.7.4. fdt mknode - create new nodes
fdt mknode can be used to attach a new node to the tree. We will use the fdt list command to verify
that the new node has been created and that it is empty:
=> fdt list /
/ {
#address-cells = <0x1>;
#size-cells = <0x1>;
interrupt-parent = <0x1>;
model = "DENX M28EVK";
compatible = "denx,m28evk", "fsl,imx28";
chosen {
};
aliases {
};
memory {
};
cpus {
};
apb@80000000 {
};
ahb@80080000 {
};
regulators {
};
sound {
};
};
=> fdt mknode / testnode
=> fdt list /
/ {
#address-cells = <0x1>;
#size-cells = <0x1>;
interrupt-parent = <0x1>;
model = "DENX M28EVK";
compatible = "denx,m28evk", "fsl,imx28";
testnode {
};
chosen {
};
aliases {
};
memory {
};
cpus {
};
apb@80000000 {
};
ahb@80080000 {
};
regulators {
};
sound {
};
};
=> fdt list /testnode
5.9.7.3. fdt print - recursive print 68
- 1. Abstract 6
- 2. Introduction 7
- 3.1. ELDK Availability 10
- 3.2. ELDK Getting Help 10
- 3.3. Supported Host Systems 10
- 3.5. Installation 11
- 3.5.1. Product Packaging 11
- 3.5.2. Downloading the ELDK 11
- 3.5.3. Initial Installation 12
- Packages 13
- 3.6. Working with ELDK 14
- $ arm-linux-gcc -c myfile.c 15
- 3.9. ELDK Packages 18
- 3.10.3. build.sh Usage 28
- 4. System Setup 30
- 4.8. Configuring a NFS Server 34
- 5. Das U-Boot 36
- 5.1. Current Versions 36
- 5.3. Configuration 37
- 5.4. Installation 38
- 5.4.1. Before You Begin 38
- 5.5. Tool Installation 39
- 5.6. Initialization 39
- 5.7. Initial Steps 40
- 5.8. The First Power-On 41
- 5.9.1. Information Commands 42
- 5.9.2. Memory Commands 44
- 5.9.2.3. cmp - memory compare 45
- 5.9.2.4. cp - memory copy 46
- 5.9.2.5. md - memory display 46
- 5.9.3. Flash Memory Commands 50
- 5.9.3.6. UBI Usage in U-Boot 54
- Useful definitions: 58
- 5.9.5. Download Commands 61
- 5.9.9. Storage devices 72
- 5.9.9.1. MMC devices 72
- 5.9.8. Special Commands 72
- 5.9.9.1. MMC devices 74 74
- 5.9.9.1. MMC devices 75 75
- 5.9.9.2. NAND devices 76
- 5.13. U-Boot Image Formats 84
- 5.14.1. Boot Count Limit 84
- 6.3. Installation 86
- 7. Booting Embedded Linux 87
- 7.1. Introduction 87
- 7.3. Passing Kernel Arguments 88
- 7.4. Boot Arguments Unleashed 88
- 8. Building and Using Modules 96
- 9. Advanced Topics 97
- 9.1. Flash Filesystems 97
- 9.1.3. Second Version of JFFS 99
- 9.1.5.1. Create Device Files 101
- 9.2.1. Mount Parameters 107
- $ mkfs.jffs2 -U \ 114
- Using FEC ETHERNET device 115
- Load address: 0x100000 115
- => printenv addip 115
- /proc on /proc type proc (rw) 116
- FAT File System 121
- 9.7. Overlay File Systems 126
- What it is good for? 127
- Examples 127
- # insmod mini_fo.o 128
- Performance overhead 128
- Further information 129
- 9.8.1. Mount Parameters 129
- 9.8.2. Example 129
- 10. Debugging 130
- 10.1. Debugging of U-Boot 130
- 10.2. Linux Kernel Debugging 131
- 10.4. Tips and Tricks 135
- 10.5. Application Debugging 135
- 10.5.2. Remote Debugging 136
- 12.1. Application Notes 137
- 12.2. Further Reading 137
- 12.2.2. Linux kernel 138
- Articles 138
- Standards: 139
- 12.2.4. Network Programming 139
- 12.2.10. Embedded Topics 141
- 12.3. Mailing Lists 142
- 12.4. Links 142
- 12.5. Tools 143
- 13. Appendix 143
- 13.1. Flat Device Tree 144 144
- 13.1. Flat Device Tree 145 145
- 13.1. Flat Device Tree 146 146
- ELDK Installation Hangs 151
- 14.1.11. Enable SSH Access 158
- 14.2. U-Boot 159
- -mrelocatable 160
- Compiler 164
- 14.2.12. Erasing Flash Fails 165
- $ make tools/gen_eth_addr 166
- $ tools/gen_eth_addr 166
- 14.2.17.2. Hush shell 169
- 14.2.17.3. Hush shell scripts 170
- 14.2.17.4. General rules 171
- => setenv clocks_in_mhz 1 173
- => saveenv 173
- => setenv clocks_in_mhz 173
- Rebooting in 1 seconds 178
- # cat /etc/blank_off 181
- # cat /etc/init_tty 181
- Multi-File Image 183
- 14.3.26.1. XIP Kernel 191
- 14.3.26.2. Cramfs Filesystem 192
- 14.3.26.3. Hints and Notes 193
- 14.3.30. Swapping over NFS 196
- 14.4. Self 198
- 14.5. RTAI 200
- 14.6. BDI2000 201
- 14.7. Motorola LITE5200 Board 203
- 15. Glossary 204
- YellowDog 210
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