Compiling Kernel; Testing Serial Gadget; Introduction To Drivers - Embest SBC8600B User Manual

Embest Technology Co., Ltd

3.6.3 Compiling Kernel

Please execute the following instructions to recompile kernel;

make dtbs zImage
After all the instructions are executed, you can find a kernel image named zImage.

3.6.4 Testing Serial Gadget

Connect SBC8600B miniUSB port and PC USB port, the Gadget Serial v2.4
hardware device will be found in Windows Device Manager.
Install device driver CD\linux\tools\linux-cdc-acm.inf for the device above.
Run serial tool (such as Hyper Terminal) on PC, open COM port specific to Gadget
Serial device. Then access /dev/ttyGS0 on SBC8600 will communicate with PC terminal.

3.7 Introduction to Drivers

This section will introduce all kinds of drivers required by a Linux system including
NAND Flash driver, SD/MMC driver, display subsystem driver, video acquisition driver and
audio input/output driver.
The table below shows the access path to find all the drivers;
Categories Names
spl
BIOS
u-boot
Copyright © 2017 Embest Technology
Table 3-3 Locations of Source Code in BS
Descriptions
NAND
MMC/SD
FAT
NAND
MMC/SD
Locations
drivers/mtd/nand/omap_gpmc.c
drivers/mmc/omap_hsmmc.c
fs/
drivers/mtd/nand/omap_gpmc.c
drivers/mmc/omap_hsmmc.c
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