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**What is Burning?**
Burning refers to the process of compiling a written program into a HEX or BIN file and then writing it into the MCU (Microcontroller Unit) chip. This process was originally called "burning" because early MCUs could only be programmed once, making the process irreversible. Later, with the introduction of UV-erasable EEPROMs and later FLASH ROMs that allowed for multiple reprogramming, the term "burning" remained in use to describe the act of programming the MCU. It should not be confused with uploading data via a serial port or sending data while the MCU is running.
**Development Board**
The development board typically does not have a BootLoader built-in. When the flash memory is empty or has been erased, it is used to program the bootloader and bare-metal programs directly into the flash.
There are several methods to program the development board:
1. **Parallel Wiggler JTAG Debug Board with HJTAG Software**: This method supports both NAND and NOR flash but requires a parallel port, which is rare on modern laptops. Therefore, its usage is limited.
2. **HJTAG USB Emulator with HJTAG Software**: This is faster and more suitable for computers without a parallel port.
3. **J-Link V8 Emulator with JFlash Arm Software**: This can only burn NOR flash directly, but NAND flash can be programmed indirectly through SDRAM. This method is more complex and less commonly used unless cost is a major concern.
**The Development Board Has U-Boot**
U-Boot is used to write programs to the flash, provided that U-Boot runs correctly. It is ideal for burning the bootloader, kernel, and root filesystem.
Here are some common methods for programming using U-Boot:
1. **USB Port**: The S3C2440 U-Boot includes a USB Download function that works with Samsung’s DNW software. While slow, it's convenient and supported by Samsung’s source code. The Linux version is more stable and easier to use.
2. **Network Port**: U-Boot integrates TFTP support, allowing fast downloads from any TFTP Server. This is highly recommended due to its speed and compatibility across platforms.
3. **Serial Port**: Using the Xmodem protocol, this method is slower and not recommended compared to USB or network.
4. **USB Drive**: Insert a USB drive into the board and use U-Boot to automatically load and burn files from the drive.
5. **SD/TF Card**: Similar to USB drives, this is an alternative way to program the device.
**Programming the U-Boot**
Programming U-Boot involves two main steps:
1. **Download U-Boot to RAM**: Use a short-circuit block to boot from internal memory. After power-on, you’ll see the message “LPC31xx READY FOR PLAIN IMAGE†in the serial terminal. Then, send `u-boot-init.bin` and `u-boot.bin` using a serial file transfer tool. Once loaded, U-Boot will start and count down. Press any key to stop the countdown and proceed.
2. **Burn U-Boot to NAND Flash**: In HyperTerminal, use the `loady` command and send `u-boot.bin` via Ymodem. After receiving the file, erase the NAND flash using `nand erase`, then write the image using `nand write 0x30001000 0x4000 0x100000`. Replace the addresses based on your specific setup. Finally, remove the jumper and restart from NAND.
**Programming the Kernel**
During the U-Boot countdown, press any key to interrupt and enter the `loady` command. The main commands used are:
- `nand erase 0x200000 0x200000` – Erase the kernel partition.
- `nand write 0x30001000 0x200000 0x200000` – Write the kernel to NAND.
**Programming the File System**
The file system can be programmed via serial port, similar to the kernel, or via NFS using the `mtd_debug` tool. Since the file system is usually large, the serial method may be slower.
For serial programming:
- `loady`
- `nand erase 0x600000 0x3a00000`
- `nand write 0x30001000 0x600000 0x800000`
For NFS programming:
- `mtd_debug erase /dev/mtd2 0 0x3a00000`
- `mtd_debug write /dev/mtd2 0 0x800000 ubi.img`
Each parameter should be checked with the `mtd_debug help` command.
**Setting Boot Options**
In U-Boot, you can set boot options using environment variables. For example:
- To mount a UBIFS file system:
`setenv bootargs console=ttyS0,115200n8 ubi.mtd=2 root=ubi0:rootfs rootfstype=ubifs`
- To mount an NFS root:
`setenv bootargs noinitrd root=/dev/nfs console=ttyS0,115200n8 nfsroot=129.1.4.199:/rfs/rootfs,proto=tcp,nfsvers=3,nolock ip=129.1.31.33:129.1.4.199:129.1.88.1:255.255.0.0::eth0:off`
- To boot the kernel:
`setenv bootcmd nand read 0x30001000 0x200000 0x200000\; bootm 0x30001000\;`
After modifying environment variables, use `saveenv` to save the changes.
In the digital age, servers (Server Computer) as the core of enterprise IT architecture, play a key role in data processing, resource storage and task scheduling. Whether it is local deployment or cloud expansion, choosing the right server solution can significantly improve business efficiency and security. The following is an analysis of the four core scenarios and technical advantages for you:
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The Linux server operating system is known for its open source, flexibility and high security, and is an ideal choice for Web services, database management and development environments. It supports customized configuration and low-cost operation and maintenance, and is suitable for diverse needs from start-ups to large data centers. With high-performance hardware such as Supermicro Servers, it can further unleash its potential and achieve 7x24 hours of stable operation.
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Supermicro servers are known for their modular design, high-density computing and excellent energy efficiency. Its solutions cover edge computing to AI training scenarios, support multi-processors, GPU acceleration and hot-swappable components, and meet the company's stringent requirements for scalability and reliability. Whether building a private cloud or a hybrid IT architecture, Supermicro is the only choice for hardware cornerstones.
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3. Traditional Computer Server: A solid backing for local deployment
Physical servers are suitable for data-sensitive industries or scenarios that require low-latency responses (such as financial transactions and industrial control). Through local deployment, enterprises can fully control hardware resources, combine virtualization technology to achieve resource pooling, and balance performance and cost.
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4. Cloud-Based Server: Elastic expansion, empowering the future
Cloud servers break physical limitations and provide elastic computing power on demand. AWS, Azure and other platforms support minute-level resource expansion, combined with containerization and microservice architecture, to help enterprises quickly respond to traffic peaks and global business layout. At the same time, cloud services integrate disaster recovery, security monitoring and other tools to reduce the complexity of operation and maintenance.
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Why choose us?
We provide one-stop services from Supermicro hardware customization, Linux system optimization to multi-cloud strategic deployment. According to your business scale and goals, we match the best server combination (local + cloud) to ensure the triple balance of performance, security and cost.
July 02, 2025