fix bootloader

Clarify the relationship between bootloader norflash nandflash eboot nboot uboot sdram nk. Bin NK. nb0 I. Use NAND Flash to store data and programs on the handheld computer, but nor flash must be enabled. In addition to the Samsung processor, other mainstream processors used in handheld computers do not support programs directly started by NAND Flash. Therefore, you must first start the machine with a small nor flash, and then load OS and other softwa

original ymodem protocol. The first packet does not contain the total number of bytes. The ymodem under the Super Terminal should be in the ultimate version, so the official dome can only be transmitted under the Super Terminal. Ymodem is described in detail below. You will know the reason. First, we provide a simple bootloader project. Http://pan.baidu.com/share/link? Consumer id = 373630 UK = 118334538 Supported protocols: ymodem and ymodem-

The difference between bootloader and bootstrapIn "Embedded Linux Primer" see, in fact, there are some differences and imprecise places,For example, bootstrap and bootstrap loader seem to be different on PCs, but they don't affect understanding.Http://www.devbone.com/leadbbs/MINI/Default.asp?100-2246-0-0-0-0-0-a-.htmAlso such as Redboot (RedHat Embedded Debug and Bootstrap), the essence is a bootloader but

Online live broadcasting: a free course for BootLoader application and transplantation-Linux general technology-Linux technology and application information. For more information, see the following. Are you familiar with the embedded technology industry? Do you know what embedded development works? What is the development process of embedded products? How does the classic BootLoader application and transpla

delayed for 10 seconds until the end user presses any key and switches blob to download mode. If you do not press the button within 10 seconds, blob continues to start the Linux kernel.6. Communication devices and protocols used for file transmission between the Bootloader and the hostThe most common situation is that the boot loader on the target machine transmits files to the host through the serial port. The transmission protocol is usually one of

Different types of Bootlader Generally, LILO or GRUB is used for x86 PC machines. These systems contain firmware (BIOS), which is used for programs of major system components, such as initializing a RAM controller, protecting the CPU in a specific State and providing a lot of information to the OS, for example, for traditional bios cils and ACPI table, these linux bootloaders only need to load the kernel image (which may also include the image of initrd/initramfs) from the storage medium and st

First, it is usually assembly. Code : 0 is triggered by system reset at startup. Take code 2440 as an example to directly enter the FW. s file. In some BSP packages, the name of the assembly code is startup. S. The main operations are to set the CPU frequency (PLL), initialize RTC, set memory parameters, prepare to apply for Ram for the second stage of bootloader, and read the bootloader of the second stage

S3C2410 supports direct start from NAND Flash, so NAND bootloader is used. Most NAND bootloaders are divided into nboot and eboot. Code dependent on the CPU architecture is put in nboot, which is usually implemented in assembly language + C language; while eboot is usually implemented in C language, which can implement complex functions, in addition, the Code has better readability and portability.Nboot: Hardware Device initialization: Block a

From the perspective of software structure, an embedded system is generally composed of three parts: BootLoader, BSP, operating system, and application. However, in some embedded systems, operating systems and applications are stored on devices other than the system, such as networks and hard disks. The entire system only has Boot Loader programs. Therefore, BootLoader is an important part of embedded syste

The bootloader problem of mini2440 is solved today. For bootloader, I advocate the use of a Universal multi-platform bootloader, because it is possible to become familiar with a bootloader, And to transplant it again after the hardware platform is changed. So I chose U-boot. The latest version of U-boot is 2009.03, and

I. Introduction to bootloader 1. Definition: A short program before the operating system runs 2. features: Initialize hardware devices; Call the operating system; 3. installation: After resetting, the system starts execution from the address 0x00000000. When nandflash is started, at the address 0, the first 4 kb is Ram. After power-on, the system copies the content of the first 4 kb of nandflash to ram. 4. Porting:

Introduction to Bootloader and linux development-General Linux technology-Linux programming and kernel information. We will send you a free AKAE Boot loader and linux development introduction document, which should be helpful to you. Bootloader 1. basic knowledge 2. common Bootloader 3. hardware initialization 4. Flash operations 5. Xmodem protocol 6. comm

Due to my project needs, to do STM8L052R8 bootloader, for the remote program upgrade function, for security reasons, do not use the St comes with bootloader, but homemade bootloader.The basic function is this, First the program runs in a V1.0 version, and with boot, when the program received a command, the program ran into a dead loop, waiting for the hardware watchdog reset, after the program reset into th

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

Source: use usbasp for Uno burn write bootloader atmega16u2, atmega328p firmware burn -in tutorialArduino board Because the operation does not cause the firmware damage, or want to update the firmware? Today I would like to introduce you how to use usbasp Burn write bootloader. Personally, this method is more convenient and less expensive than using TINYISP. First of all, make sure there is a usbasp downloa