Structure Of Embedded Linux System - Embest SBC8600B User Manual

Embest Technology Co., Ltd
MMC/SD
USB OTG
Audio
Keypad
LED
Rootfs Debian 8
Android
Demo
TISDK

3.2 Structure of Embedded Linux System

SBC8600B has a Linux-4.1 system in on-board NAND flash by default. This system
supports 4.3-inch touch-screen and consists of spl（MLO）, u-boot, kernel and rootfs. The
following figure shows the structure of embedded Linux system.
Figure 3-1
1) spl is the first level bootstrap program. After the system starts up, the ROM
inside the CPU will copy spl to internal RAM and perform its routine work. Its
main function is to initialize the CPU, copy u-boot into the memory and let u-boot
lead the booting process;
2) u-boot is the second-level boot loader. It is used to interact with users,
update images and boot the kernel;
3) The kernel used in this document is Linux 4.1 and has customizable for for
SBC8600B;
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MMC/SD controller driver
USB OTG 2.0 driver
Audio driver (supports audio recording
and playback)
GPIO keypad driver
User custom Led driver
Simplified, No GUI
Android 4.0.3 system
TISDK system
Structure of Embedded Linux System
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SBC8600B-UM-V2.0
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