Rockpi4/dev/u-boot/pxe/es es
ROCK Pi 4 > Desarrollando > U-boot PXE
PXE boot, Preboot eXecution Environment es una especificación que describe un entorno estándar cliente servidor que inicia software ensamblado, desde una red. U-boot del ROCK Pi soporte boot PXE y está activo por defecto. Esta página describe como usar el boot PXE del ROCK Pi 4.
Contents
Configuración del Servidor
Este documento es usado por el servidor tftp para probar boot pxe en ramdisk, a continuación, instalamos y configuramos el servidor tftp con Ubuntu 16.04LTS, y preparamos algunos archivos de inicio.
Paso 1: Instalar TFTP y el servidor TFTP
sudo apt-get install tftp-hpa tftpd-hpa
Paso 2: Configurar el servidor TFTP
1.Crear una carpeta, así:
mkdir /data/tftp_server
2.Modifica el fichero de configuración, así:
$ cat /etc/default/tftpd-hpa # /etc/default/tftpd-hpa TFTP_USERNAME="tftp" TFTP_DIRECTORY="/data/tftp_server" TFTP_ADDRESS="0.0.0.0:69" TFTP_OPTIONS="-l -c -s"
Paso 3: Reiniciar tftp
service tftpd-hpa restart
Paso 4: Preparar el fichero de inicio
copiamos todos los archivos de debian en la partición boot, de esta forma:
#:/data/tftp_server$ tree . ├── config-4.4.154-88-rockchip-00030-g90239a6 //copia de debian ├── dtbs // el fichero .dtb, que necesitamos rockpi-4b-linux.dtb, copiar de debian │ └── 4.4.154-88-rockchip-00030-g90239a6 │ └── rockchip │ ├── ficus-linux.dtb │ ├── px30-evb-ddr3-lvds-v10.dtb . . . │ └── rockpi-4b-linux.dtb ├── extlinux //copia de debian │ ├── extlinux.conf ├── hw_intfc.conf //copia de debian ├── initrd.img-4.4.154-88-rockchip-00030-g90239a6 //ramdisk,copia de debian ├── overlays //.dtbo files,copia de debian │ ├── at24c02.dtbo │ ├── console-on-ttyS2.dtbo │ ├── console-on-ttyS4.dtbo . . . │ ├── spi1-waveshare35c.dtbo │ └── two-color-led.dtbo ├── pxelinux.cfg //this folder is important,you can make the folder by yourself │ ├── 01-be-73-e6-4e-04-2b //named it by env ethaddr of uboot.i will introduce this file │ └── extlinux.conf └── vmlinuz-4.4.154-88-rockchip-00030-g90239a6 //this is a kernel image,copy from debian or build by yourself
Pxelinux.cfg
Fichero de configuración pxe, ejecutar uboot e imprimir ethaddr:
...
hclk_perilp1 100000 KHz
pclk_perilp1 50000 KHz
Net: eth0: ethernet@fe300000
Hit key to stop autoboot('CTRL+C'): 0
=> print ethaddr
ethaddr=be:73:e6:4e:04:2b
así llamé a mi fichero de configuración pxe 01-be-73-e6-4e-04-2b, o puedes nombrarlo por defecto
:/data/tftp_server/pxelinux.cfg$ cat 01-be-73-e6-4e-04-2b
label kernel-4.4.154-88-rockchip-00030-g90239a6
kernel /vmlinuz-4.4.154-88-rockchip-00030-g90239a6 //choose your kernel image
devicetreedir /dtbs/4.4.154-88-rockchip-00030-g90239a6 //choose your dtb folder
initrd initrd.img-4.4.154-88-rockchip-00030-g90239a6 //choose your ramdisk
append earlycon=uart8250,mmio32,0xff1a0000 swiotlb=1 coherent_pool=1m earlyprintk console=ttyFIQ0,1500000n8 rw root=PARTUUID=b921b045-1d rootfstype=ext4 init=/sbin/init rootwait //this is bootargs for kernel
Rock Pi 4
debemos instalar uboot en flash spi o en emmc o microSD, este documento usa spi flash, así que mira spi-install para instalar uboot en spi flash
Paso 2: Configurar direccion ip
enter uboot,and set some env:
=> setenv ipaddr xx.xx.xx.xx //establecer la direccion ip rockpi4 => setenv serverip xx.xx.xx.xx //establecer la ip a tftp
Paso 3: ejecutar comando pxe boot
cuando ejecute el comando pxe, uboot obtendrá algunos ficheros de su servidor tftp, así:
=>pxe get
missing environment variable: pxeuuid
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/01-be-73-e6-4e-04-2b
Speed: 1000, full duplex
Using ethernet@fe300000 device
TFTP from server 192.168.2.140; our IP address is 192.168.2.205
Filename 'pxelinux.cfg/01-be-73-e6-4e-04-2b'.
Load address: 0x600000
Loading: #
391.6 KiB/s
done
Bytes transferred = 401 (191 hex)
Config file found
=>pxe boot
missing environment variable: bootfile
Retrieving file: /hw_intfc.conf
Speed: 1000, full duplex
Using ethernet@fe300000 device
TFTP from server 192.168.2.140; our IP address is 192.168.2.205
Filename '/hw_intfc.conf'.
Load address: 0x700000
Loading: #
840.8 KiB/s
done
Bytes transferred = 1722 (6ba hex)
dtoverlay number: 0, name:/overlays/console-on-ttyS2.dtbo
hw_conf.valid = 1
hw_conf.pwm0 = 0
hw_conf.pwm1 = 0
hw_conf.uart2 = 0
hw_conf.uart4 = 0
hw_conf.spi1 = 0
hw_conf.spi2 = 0
hw_conf.i2c2 = 0
hw_conf.i2c6 = 0
hw_conf.i2c7 = 0
hw_conf.dts_overlay_count = 1
hw_conf.dts_overlay[0] = /overlays/console-on-ttyS2.dtbo
1: kernel-4.4.154-88-rockchip-00030-g90239a6
missing environment variable: bootfile
Retrieving file: initrd.img-4.4.154-88-rockchip-00030-g90239a6
Speed: 1000, full duplex
Using ethernet@fe300000 device
TFTP from server 192.168.2.140; our IP address is 192.168.2.205
Filename 'initrd.img-4.4.154-88-rockchip-00030-g90239a6'.
Load address: 0xa200000
Loading: ########......
##################
5.2 MiB/s
done
Bytes transferred = 4072215 (3e2317 hex)
missing environment variable: bootfile
Retrieving file: /vmlinuz-4.4.154-88-rockchip-00030-g90239a6
Speed: 1000, full duplex
Using ethernet@fe300000 device
TFTP from server 192.168.2.140; our IP address is 192.168.2.205
Filename '/vmlinuz-4.4.154-88-rockchip-00030-g90239a6'.
Load address: 0x280000
Loading: ################# ......
########################
5 MiB/s
done
Bytes transferred = 19427336 (1287008 hex)
append: earlycon=uart8250,mmio32,0xff1a0000 swiotlb=1 coherent_pool=1m earlyprintk console=ttyFIQ0,1500000n8 rw root=PARTUUID=b921b045-1dt
missing environment variable: bootfile
Retrieving file: /dtbs/4.4.154-88-rockchip-00030-g90239a6/rockchip/rockpi-4b-linux.dtb
Speed: 1000, full duplex
Using ethernet@fe300000 device
TFTP from server 192.168.2.140; our IP address is 192.168.2.205
Filename '/dtbs/4.4.154-88-rockchip-00030-g90239a6/rockchip/rockpi-4b-linux.dtb'.
Load address: 0x8300000
Loading: #######
5 MiB/s
done
Bytes transferred = 93561 (16d79 hex)
fdt addr 0000000008300000
fdt magic number edfe0dd0
fdt size 1048576
merge_dts_overlay
missing environment variable: bootfile
Retrieving file: /overlays/console-on-ttyS2.dtbo
Speed: 1000, full duplex
Using ethernet@fe300000 device
TFTP from server 192.168.2.140; our IP address is 192.168.2.205
Filename '/overlays/console-on-ttyS2.dtbo'.
Load address: 0x8200000
Loading: #
755.9 KiB/s
done
Bytes transferred = 774 (306 hex)
overlay dtb(0x0000000008200000) is valid
fdt_overlay_apply 0000000008300000 0000000008200000
## Flattened Device Tree blob at 08300000
Booting using the fdt blob at 0x8300000
Loading Ramdisk to e99e3000, end e9dc5317 ... OK
Loading Device Tree to 00000000e98e0000, end 00000000e99e2fff ... OK
Adding bank: 0x00200000 - 0xf8000000 (size: 0xf7e00000)
Total: 717296.593 ms
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpuset
y ahora tu núcleo está iniciado