stb225 buildroot

This is makefile for building the Linux image for a STB(Set Top Box) based on PNX8335(stb225). The main target of this image: to use STB only as Linux server.

How to choose needed the Linux kernel version

Currently, the default Linux kernel is version 6.6.39

For using Linux 5.15.162 by default

Make the following configuration changes:

• Change "Toolchain" -> "Custom kernel headers series" to "5.15.x"
• Change "Kernel" -> "Kernel version" to "5.15.162"
• Change "Kernel" -> "Custom kernel patches" to "$(TOPDIR)/linux/pnx8335/linux-5.15-*.patch"

Build Linux image

To build the image run make in this directory. Please find image at buildroot-*/output/images

Configure u-boot and Writing image to NAND flash

Load by Y-modem Linux kernel image in to RAM using command:

loady 0x80800000 115200

Change the NAND flash partitioning with following command:

setenv mtdparts 'mtdparts=gen_nand:16k(Boot0),560k(Boot1),3M(Ker0),3M(Ker1),64k(EnvFs),20M(Kernel),-(Filesystem)'

Write Linux image to Flash:

nand erase Kernel
nand write 0x80800000 Kernel 0x1400000

Modify last variable

setenv bootcmd 'nand read 0x80800000 Kernel; run setargs; bootm 0x80800000'
saveenv

Preparation in Linux:

For mounting FAT USB-flash drive add following line in /mnt/nand/fstab file:

/dev/sda1 /mnt/downloads vfat iocharset=utf8,uid=1000,gid=1000 0 0

or if you have ext4 USB-Flash:

/dev/sda1 /mnt/downloads ext4 defaults 0 0

To configure WIFI, you must create the configuration file /mnt/nand/wpa_supplicant.conf. You can also copy the existing /etc/wpa_supplicant.conf file to the /mnt/nand directory and edit it.

To configure login through ssh, you must set the root password and edit /etc/ssh/sshd_config by adding the following line:

PermitRootLogin yes