https://blog.rishavs.in/tags/bootprocess/Recent content in BootProcess on Rishav's Digital GardenHugoen-usSun, 11 Jan 2026 12:39:00 +0000https://blog.rishavs.in/posts/embedded-linux-boot-process-on-arm/Sun, 11 Jan 2026 12:39:00 +0000https://blog.rishavs.in/posts/embedded-linux-boot-process-on-arm/<blockquote> <p>&ldquo;Before Linux prints its first log, the CPU has already taken a long, carefully choreographed journey.&rdquo;</p></blockquote> <p>The Embedded Linux boot process is best understood by tracking <strong>where the CPU executes from</strong> at each stage. From power-on to a running kernel, execution moves through <strong>ROM → SRAM → DRAM</strong>. Kernel booting begins only when the CPU starts executing kernel code from RAM.</p> <figure> <img loading="lazy" src="https://blog.rishavs.in/images/EMB_Linux_Boot_Process.png" alt="EMB_Linux_Boot_Process"/> </figure> <hr> <h2 id="1-power-on-and-cpu-reset">1. Power-on and CPU reset</h2> <p>Everything starts with power-on or a hardware reset.</p>