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Embedded bootloader development of nine----keyboard interrupt control LED lights (Tiny 6410) __ Embedded Arm-bootloader

Profile: This section is mainly recorded in the tiny 6410 Development Board written in the bare Metal program key interrupt control LED light. 8 user-defined keys are configured in the Tiny6410, and KEY1 is used to control the LED1~LED4. The key and led circuits are as follows: K1 corresponds to the external interrupt Eint0,led1~led4 configuration method as described in the article Embedded bootloader Development Six (Tiny 6410), no longer making sta

bootloader role, why do you need bootloader?

1, the role of bootloader Simply put,BootLoader is a small program that runs before the operating system runs. With this applet, you can initialize the hardware device to bring the system's hardware and software environment to a suitable state to prepare for the final call to the operating system. The starting process for bootloader is divided into two stages st

Bootloader and kernel with startup process/compile bootloader/compilation kernel

Bootloader and kernel with the start-up process--------------------------------------------The ARM9 board has a Norflash chip that stores the basic Bootlader code, which is the 0 address where the CPU executes the code. The 4kRam space inside the CPU acts as the stack and data segment storage at this time. Because it is Samsung's own chip, so the hardware above can be implemented to Nandflash before the 4K code automatically copied to the Iram (the im

Openmoko gta03 & smartq5 initi6410 bootloader Qi reading and analysis of enterprise-level bootloader (I)

Openmoko gta03 smartq5 initi6410 bootloader Qi reading and analysis of enterprise-level bootloader (I)(For more information, see the source. It cannot be used for commercial purposes) (Welcome:Www.embed-training.com/) As openmoko 0 xdroid's open-source man jserv said: the use of Qi is not limited to the openmoko freerunner hardware platform. The smart device changes the original openmoko gta03

What do you know about bootloader?

are more advanced than other Android users. Because many people care about bootloader, manufacturers such as HTC, Moto, and Shenma dare to lock bootloader. However, some companies dare to jump out of the bootloader lock club. For example, Sony Ericsson and HTC have actually

Spin lock, blocking lock, reentrant lock, pessimistic lock, optimistic lock, read-write lock, bias, lightweight lock, heavyweight lock, lock expansion, Object Lock and Class lock

1. Spin Lock A spin lock enables a thread to perform an empty loop without being suspended while not acquiring a lock, (that is, the so-called spin, which is the execution of the empty loop itself), and if the thread can acquire a lock after several empty loops, continue executing. If the thread is still unable to get

Armlinux bootloader details

Introduction There are a lot of articles on Linux bootloader on the Internet, but most of them are relatively large programs such as Vivi and blob, which are not easy to read and the compiled files are also relatively large, in addition, it is more development-oriented guiding code that needs to be reduced when made into a product, which affects the development speed to a certain extent, and has a relatively high learning overhead for beginners, here

Full explanation of armlinux bootloader (based on Samsung 2410)

Full explanation of armlinux bootloaderArticle/column: dongleijun2002Table issuer taling at, January 1, January 14-12, 2005 Full explanation of armlinux bootloaderAuthor: Dong leiyun1. Several Important ConceptsCompressed kernel and decompressed KernelJffs2 File SystemRamdiskStartup parameters (from IBM Developer)2. Development Environment and Development Board Configuration:3. Startup Mode:4. Code AnalysisThere are a lot of articles on Linux

Full explanation of ARM Linux bootloader

Many articles about Linux bootloader, but most of them are about Vivi, blob and other large programs. It is not easy to read and the compiled files are large, in addition, it is more development-oriented guiding code that needs to be reduced when made into a product, which affects the development speed to a certain extent, and has a relatively high learning overhead for beginners, here we analyze a simple bootload

Why do I need bootloader

operating system. We want to upgrade the application. This is common for Windows or Linux, and if there is no bootloader, then we have to find a burn-and-write tool that burns a computer or CPU, in fact, it's not an easy thing for a manufacturer to do. But the Bootloaer is very convenient, we just need to put the upgraded operating system into the "hard disk" or a location in the Nandflash, and then restart the power outage,

Relationship between Bootloader and kernel Image

Last night, I heard from my roommates about how to compile the Linux kernel. As a computer graduate, I don't know much about it. It's so depressing. After much understanding, we finally have a vague concept. In Linux, the kernel image is usually stored in Boot/grub or boot/Lilo. After a roommate's explanation, I have a rough idea about this image. But who will read this grub. conf? You do not know. Come and think about it in bed, bootloader! This must

Realization of S5PV210 Development Series three _ Simple bootloader

s5pv210 Development Series three the realization of simple bootloader Chess Boy 1048272975 Bootloader is the code that executes the first segment of the embedded system after power-on. For a simple processor, there may not be a concept of bootloader, but for the application processor, there are different boot methods, different storage devices (Nand Flash, SD/M

New Moto X 2014 full version official Unlock bootloader graphics tutorial

originally did not want to write tutorials, because play Moto mobile phone is basically not a rookie, can be very simple to solve these problems, between the appearance of Moto State, more and more novice, reach the party is more and more, more and less good people, tutorials more and more not detailed. All kinds of problems really worried, buy a cell phone can not be happy to play. Novice look at the forum to see the dazzling, can not find a little clue, it is really annoying. What to do? New M

Brief introduction of Bootloader Uboot

From http://blog.ednchina.com/hhuwxf/1915416/message.aspx, thanks to the author First, the introduction of bootloader From the previous hardware experiment you can know that after the system is powered up, a program is required to initialize: offWATCHDOG, changing the system clock, initializing the storage controller, copying more code into memory, and so on. If it can put the operating system kernel (whether from the local, such as Flash, or from the

A brief introduction to the bootloader Embedded Studio-linux System (review)

Support Linux bootloader More, developed into the 2010, there have been some inevitable results, some bootloader has disappeared, some bootloader have been replaced, some bootloader were merged, some although in development, But has retreated to a remote corner. Now let's introduce a

"Finishing" BIOS, BootLoader, uboot contrast __ios

BIOS The BIOS is the English "basic Input Output system" abbreviation, after literal translation after the Chinese name is "the basic input to export systems". In fact, it is a group of curing to the computer motherboard on the previous ROM chip program, it holds the computer's most important basic input and output of the program, system settings information, post-boot self-test program and system from the start program. Its main function is to provide the lowest, most direct hardware setup and

Let grub save your bootloader.

Nothing is more irritating than bootloader bad, give full play to the role of Grub 2, let bootloader work well. Why do you say that? Grub 2 is the most popular bootloader and is used on almost all Linux distributions. Bootloader is a vital software, but it's very easy to damage. Grub 2 is a boot loader

[Reprinted] bootloader development experience

Reprinted from: http://blogs.msdn.com/yunxu/archive/2007/10/09/bootloader.aspx Embedded operating systems are becoming more and more important in embedded software development. When it comes to embedded operating systems, boot loader is an indispensable topic, whether it is Windows CE, embedded Linux, or other embedded operating systems. Most of them require boot loader to load the operating system. When we get a new board and want to run an embedded operating system on it, the first thing we ne

Application of Arm Location-independent programming in bootloader

Http://www.mcuol.com/tech/107/26052.htm Introduction Location-Based independenceCodePIC (positionindependent code)ProgramThe design plays an important role in the development of embedded application systems. Development of bootloader programs and kernel initialization design, especially in bare metal environments. Location-independent programming methods can also be used in specific applications to build highly efficient dynamic link libraries,

Linux Kernel Startup Process and bootloader (Overview)

1. Linux kernel Startup Process OverviewAn embedded Linux system can be divided into four parts: Boot Loader, Linux kernel, file system, and application. Bootloader is the first code executed after the system is started or reset. It is mainly used to initialize the processor and peripherals and then call the Linux kernel. After completing system initialization, the Linux kernel needs to mount a file system as the root file system ). The root file syst

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