How Linux Changed the World from 12 Major Innovations (Part 1)

This article partially refers to Huaqing Yuanjian documents The upper half of the interrupt requires the execution of a time interval, so the code with longer processing time is often placed in the lower half of the interrupt for processing. Interrupt the application of the lower half: the upper half of the network

Setting Environment Variables Start the uboot we burned and press Enter to enter set ipaddr "172.16.3.222" //Set the IP address of the board set severip "172.16.3.94" //Set the host's IP address set gatewayip "172.16.3.254" //Set gateway set bootargs "root =/dev/nfs nfs =172.16.3.94:/home/user/roots ip =172.16.3.222

The Chrome platform update for the Linux 5.19 kernel introduces a new Chrome OS ACPI device driver in addition to a slew of fixes, but most of them are relatively basic at this stage. One notable addition is that Framework Laptop now has support for cros_ec_lpcs, the modular Linux laptop that uses Google's ChromeOS em

1. Introduction Driver engineers who are interested in the timer driver (clocksource chip driver and clockevent chip driver) on the ARM platform should have noticed the evolution of the timer hardware. In the single-core era, each SOC vendor purchased the IP of the ARM core and then designed the peripherals on the SOC

1. Detailed explanation of SPI subsystem block diagram: There are two types of devices on the SPI bus: one is the master end, which usually appears as a submodule of the SOC system. For example, many embedded MPUs often contain SPI modules. The other is the slave end, such as some SPI interface Flash, sensors,

1 Add UDA1341 device structure to the initialization file Linux-2.6.32.2 has perfectly supported the driver of UDA1341 audio chip. We only need to register the control port of UDA1341 platform device in arch/arm/mach-s3c2440/mach-mini2440.c file. Open mach-mini2440.c and add the following content: ; Add header

Some time ago, due to work reasons, I reinstalled the virtual machine from the original Ubuntu 12.04 (32-bit) to Ubuntu 16.04 (64-bit). Naturally, all the tools and source codes related to the mini2440 development board originally installed in Ubuntu 12.04 need to be reinstalled. Today, I happened to have some free ti

The kernel can run, and the next step is to transplant the root file system. We use BusyBox-1.10.1 to create the root file system. The download address is: http://www.busybox.net/downloads/ 1. Set up BusyBox (1) Decompression #tar -xvjf BusyBox-1.10.1.tar.bz2 #cd BusyBox-1.10.1 (2) Modify Makefile and set CROSS_COMPIL