89 lines
3.1 KiB
Markdown
89 lines
3.1 KiB
Markdown
Title: Home router with sama5d35
|
|
Author: kleph
|
|
Email: kleph@kleph.eu
|
|
Category: Article
|
|
Date: 2013/07/04
|
|
Tags: Linux, Arm, Debian, Embedded
|
|
Slug: Home router with sama5d35
|
|
Lang: en
|
|
Summary: Here is an article in which I will try to describe/document how I installed a normal debian beside the original demo OS on the sama5d35 board won at Fosdem 2013 (thanks again !)
|
|
|
|
[TOC]
|
|
|
|
Here is an article in which I will try to describe/document how I installed a normal debian beside the original demo OS on the sama5d35 board won at Fosdem 2013 (thanks again !)
|
|
|
|
# firmware
|
|
|
|
I did not flash the bootloader nor the NAND for now.
|
|
|
|
The internal bootloader [name] checks for SD card before the NAND.
|
|
Beware, the second slot, uSD card, is not checked, despite beeing listed in the datasheet provided with the board (Atmel_11121_32-bit-Cortex-A5-Microcontroller_SAMA5D3_Datasheet.pdf).
|
|
|
|
In the User Guide (Atmel_11180_32-bit-Cortex-A5-Microcontroller_SAMA5D3-Series-EK_User-Guide.pdf) int the boot process, only the first slot, the one that accept SD card, is mentioned.
|
|
|
|
It took me a week to figure that... I though my builds were bad and/or flashing the board with sam-ba was mendatory.
|
|
|
|
But with U-Boot and a kernel on a FAT(16 or 32) partition on a SD-card, you can boot without flashing the demo system :)
|
|
|
|
For the setup, I used the uUSB to USB cable to connect the board to my desktop.
|
|
|
|
I use screen to connect to the serial console.
|
|
|
|
```bash
|
|
screen /dev/ttyACM0
|
|
```
|
|
|
|
NOTE: You can interrupt the original U-boot boot process by hitting any key before it starts to scan boot devices.
|
|
|
|
# Boot loader
|
|
|
|
Uboot paramaters
|
|
|
|
You may configure U-Boot boot parameters in Uboot shell
|
|
This one is for booting the original kernel, and rootfs (and /) on ne nor partition
|
|
|
|
```bash
|
|
setenv bootargs console=ttyS0,115200 mtdparts=atmel_nand:8M(bootstrap/uboot/kernel)ro,-(rootfs) rw rootfs=ext3 root=/dev/mmcblk0p2 rootdelay=2
|
|
```
|
|
|
|
For the records, the original boot params to boot from the Nand:
|
|
|
|
```bash
|
|
console=ttyS0,115200 mtdparts=atmel_nand:8M(bootstrap/uboot/kernel)ro,-(rootfs) rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs
|
|
```
|
|
|
|
# Boot
|
|
|
|
## kernel
|
|
|
|
- at91 patched
|
|
- this at91 still not in 3.9. 15-20 patches need to be added
|
|
- 3.10 ? Yes ! sama5d35 support has been merge into mainlin kernel 3.10 ! TODO: test it.
|
|
|
|
## base system
|
|
|
|
- debian armhf
|
|
|
|
## uname
|
|
|
|
- Linux jouet 3.6.9-sama5-armv7-d0.8 #1 Wed May 8 13:04:54 CEST 2013 armv7l GNU/Linux
|
|
|
|
## My mileage
|
|
|
|
I am using the board as a router for my home connection.
|
|
Also for a few additional services: DHCP server, RA announcer, DNS server (authority and resolver/cache for the lan), firewall and NTP server for the lan.
|
|
I have a pretty decent connection, FTTH, 100 Mbps / 50 Mbps, vendor stated.
|
|
|
|
# Images
|
|
|
|
[][5]
|
|
|
|
[1]: http://www.eewiki.net/display/linuxonarm/SAMA5D3
|
|
[2]: Atmel_11121_32-bit-Cortex-A5-Microcontroller_SAMA5D3_Datasheet.pdf
|
|
[3]: Atmel_11180_32-bit-Cortex-A5-Microcontroller_SAMA5D3-Series-EK_User-Guide.pdf
|
|
[4]: http://www.devicetree.org/Main_Page
|
|
[5]: http://blog.kleph.eu/images/atmel_et_raspi.jpg
|
|
|
|
<!---
|
|
vim: bg=dark
|
|
--->
|