Embedded Linux Boot Process on ARM
“Before Linux prints its first log, the CPU has already taken a long, carefully choreographed journey.” The Embedded Linux boot process is best understood by tracking where the CPU executes from at each stage. From power-on to a running kernel, execution moves through ROM → SRAM → DRAM. Kernel booting begins only when the CPU starts executing kernel code from RAM. 1. Power-on and CPU reset Everything starts with power-on or a hardware reset. ...