The SOM9331 is a Single Board Computer (SBC) with 8MiB of NOR flash and 64MiB of ram. It is made by the Chinese manufacturer OpenEmbed and comes in two form factors: a System on Module (SOM) with castellated pins, and an SBC with the hardware peripherals broken out; including 3x100Mb Ethernet ports, USB to UART for debug and a USB Host. SOM9331 Ships with OpenWrt 12.09 Attitude Adjustment.
| Architecture | MIPS |
|---|---|
| Vendor | Qualcomm Atheros |
| Bootloader | U-Boot |
| System-On-Chip | Atheros AR9331 - MIPS 24K |
| CPU/Speed | 400 MHz |
| Flash-Chip | unkown |
| Flash size | 8 MiB |
| RAM | 64 MiB |
| Wireless | AR9331 2.4GHz 802.11bgn |
| Ethernet | 3x 10/100 Mbit/s |
| USB | 1x 2.0 |
| Serial | Yes |
| JTAG | Not populated |
Insert photo of front of the casing
Insert photo of back of the casing
Insert photo of backside label
Insert photo of PCB
This board does not come in a package, it only comes with a plastic base separated by copper spacers and screwed together. Therefore it is really easy to take it apart.
All you will need is a Phillips head screw driver.
Use the following steps to remove the base:
You now have access to the front and back of the pcb.
→ port.serial general information about the serial port, serial port cable, etc.
How to connect to the Serial Port of this specific device:
Insert photo of PCB with markings for serial port
The SBC version of the module has a Silicon Labs CP2104 USB to TTL serial converter chip built in.
CP210x USB to UART Bridge VCP Drivers
Replace EXAMPLE by real values.
| Serial connection parameters for OpenEmbed SOM9331 v1 | 115200, 8N1 |
|---|
→ port.jtag general information about the JTAG port, JTAG cable, etc.
How to connect to the JTAG Port of this specific device:
Insert photo of PCB with markings for JTAG port
********************************************* * U-Boot 1.1.4 (Jan 3 2014) * ********************************************* (AR9331) U-Boot for SOM9331 DRAM: 64 MB DDR2 16-bit FLASH: Winbond W25Q64 (8 MB) CLOCKS: 400/400/200/33 MHz (CPU/RAM/AHB/SPI) LED on during eth initialization... Hit any key to stop autobooting: 0 Booting image at: 0x9F020000 Image name: OpenWrt r36088 Image type: MIPS Linux Kernel Image (lzma compressed) Data size: 957100 Bytes = 934.7 kB Load address: 0x80060000 Entry point: 0x80060000 Uncompressing kernel image... OK! Starting kernel... [ 0.000000] Linux version 3.3.8 (blogic@Debian-60-squeeze-64-minimal) (gcc version 4.6.3 20120201 (prerelease) (Linaro GCC 4.6-2012.02) ) #1 Sat Mar 23 16:49:30 UTC 2013 [ 0.000000] bootconsole [early0] enabled [ 0.000000] CPU revision is: 00019374 (MIPS 24Kc) [ 0.000000] SoC: Atheros AR9330 rev 1 [ 0.000000] Clocks: CPU:400.000MHz, DDR:400.000MHz, AHB:200.000MHz, Ref:25.000MHz [ 0.000000] Determined physical RAM map: [ 0.000000] memory: 04000000 @ 00000000 (usable) [ 0.000000] Initrd not found or empty - disabling initrd [ 0.000000] Zone PFN ranges: [ 0.000000] Normal 0x00000000 -> 0x00004000 [ 0.000000] Movable zone start PFN for each node [ 0.000000] Early memory PFN ranges [ 0.000000] 0: 0x00000000 -> 0x00004000 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256 [ 0.000000] Kernel command line: board=TL-WR703N console=ttyATH0,115200 rootfstype=squashfs,jffs2 noinitrd [ 0.000000] PID hash table entries: 256 (order: -2, 1024 bytes) [ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) [ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) [ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes. [ 0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes [ 0.000000] Writing ErrCtl register=00000000 [ 0.000000] Readback ErrCtl register=00000000 [ 0.000000] Memory: 61488k/65536k available (2211k kernel code, 4048k reserved, 418k data, 212k init, 0k highmem) [ 0.000000] SLUB: Genslabs=9, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] NR_IRQS:51 [ 0.000000] Calibrating delay loop... 265.42 BogoMIPS (lpj=1327104) [ 0.080000] pid_max: default: 32768 minimum: 301 [ 0.080000] Mount-cache hash table entries: 512 [ 0.090000] NET: Registered protocol family 16 [ 0.090000] gpiochip_add: registered GPIOs 0 to 29 on device: ath79 [ 0.100000] MIPS: machine is TP-LINK TL-WR703N v1 [ 0.350000] bio: create slab <bio-0> at 0 [ 0.360000] Switching to clocksource MIPS [ 0.360000] NET: Registered protocol family 2 [ 0.370000] IP route cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.370000] TCP established hash table entries: 2048 (order: 2, 16384 bytes) [ 0.380000] TCP bind hash table entries: 2048 (order: 1, 8192 bytes) [ 0.380000] TCP: Hash tables configured (established 2048 bind 2048) [ 0.390000] TCP reno registered [ 0.390000] UDP hash table entries: 256 (order: 0, 4096 bytes) [ 0.400000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) [ 0.400000] NET: Registered protocol family 1 [ 0.430000] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.430000] JFFS2 version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc. [ 0.440000] msgmni has been set to 120 [ 0.440000] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) [ 0.450000] io scheduler noop registered [ 0.450000] io scheduler deadline registered (default) [ 0.460000] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled [ 0.470000] ar933x-uart: ttyATH0 at MMIO 0x18020000 (irq = 11) is a AR933X UART [ 0.480000] console [ttyATH0] enabled, bootconsole disabled [ 0.480000] console [ttyATH0] enabled, bootconsole disabled [ 0.490000] m25p80 spi0.0: found s25fl064k, expected m25p80 [ 0.500000] m25p80 spi0.0: s25fl064k (8192 Kbytes) [ 0.500000] 5 tp-link partitions found on MTD device spi0.0 [ 0.510000] Creating 5 MTD partitions on "spi0.0": [ 0.510000] 0x000000000000-0x000000020000 : "u-boot" [ 0.520000] 0x000000020000-0x000000109cac : "kernel" [ 0.520000] mtd: partition "kernel" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only [ 0.540000] 0x000000109cac-0x0000007f0000 : "rootfs" [ 0.540000] mtd: partition "rootfs" must either start or end on erase block boundary or be smaller than an erase block -- forcing read-only [ 0.550000] mtd: partition "rootfs" set to be root filesystem [ 0.560000] mtd: partition "rootfs_data" created automatically, ofs=2E0000, len=510000 [ 0.570000] 0x0000002e0000-0x0000007f0000 : "rootfs_data" [ 0.570000] 0x0000007f0000-0x000000800000 : "art" [ 0.580000] 0x000000020000-0x0000007f0000 : "firmware" [ 0.610000] ag71xx_mdio: probed [ 0.610000] eth0: Atheros AG71xx at 0xb9000000, irq 4 [ 1.160000] ag71xx ag71xx.0: eth0: connected to PHY at ag71xx-mdio.1:04 [uid=004dd041, driver=Generic PHY] [ 1.170000] TCP cubic registered [ 1.170000] NET: Registered protocol family 17 [ 1.180000] Bridge firewalling registered [ 1.180000] 8021q: 802.1Q VLAN Support v1.8 [ 1.190000] VFS: Mounted root (squashfs filesystem) readonly on device 31:2. [ 1.200000] Freeing unused kernel memory: 212k freed - preinit - Press the [f] key and hit [enter] to enter failsafe mode - regular preinit - [ 6.500000] JFFS2 notice: (436) jffs2_build_xattr_subsystem: complete building xattr subsystem, 1 of xdatum (0 unchecked, 0 orphan) and 12 of xref (0 dead, 2 orphan) found. switching to jffs2 - init - Please press Enter to activate this console. [ 8.390000] Compat-drivers backport release: compat-drivers-2012-09-04-2-gddac993 [ 8.390000] Backport based on wireless-testing.git master-2012-09-07 [ 8.400000] compat.git: wireless-testing.git [ 8.430000] cfg80211: Calling CRDA to update world regulatory domain [ 8.440000] cfg80211: World regulatory domain updated: [ 8.440000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 8.450000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 8.460000] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 8.460000] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 8.470000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 8.480000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 8.820000] usbcore: registered new interface driver usbfs [ 8.820000] usbcore: registered new interface driver hub [ 8.830000] usbcore: registered new device driver usb [ 9.370000] ieee80211 phy0: Atheros AR9330 Rev:1 mem=0xb8100000, irq=2 [ 9.380000] cfg80211: Calling CRDA for country: US [ 9.380000] cfg80211: Regulatory domain changed to country: US [ 9.390000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gai [ 9.400000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 27 [ 9.410000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 17 [ 9.410000] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 20 [ 9.420000] cfg80211: (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 20 [ 9.430000] cfg80211: (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 20 [ 9.440000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 30 [ 9.500000] PPP generic driver version 2.4.2 [ 9.750000] ip_tables: (C) 2000-2006 Netfilter Core Team [ 9.970000] NET: Registered protocol family 24 [ 9.990000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 10.000000] ehci-platform ehci-platform: Generic Platform EHCI Controller [ 10.000000] ehci-platform ehci-platform: new USB bus registered, assigned bus [ 10.040000] ehci-platform ehci-platform: irq 3, io mem 0x1b000000 [ 10.060000] ehci-platform ehci-platform: USB 2.0 started, EHCI 1.00 [ 10.060000] hub 1-0:1.0: USB hub found [ 10.060000] hub 1-0:1.0: 1 port detected [ 10.090000] nf_conntrack version 0.5.0 (964 buckets, 3856 max) [ 10.330000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 14.100000] device eth0 entered promiscuous mode [ 19.340000] device wlan0 entered promiscuous mode [ 19.470000] br-lan: port 2(wlan0) entered forwarding state [ 19.470000] br-lan: port 2(wlan0) entered forwarding state [ 21.470000] br-lan: port 2(wlan0) entered forwarding state BusyBox v1.19.4 (2013-03-14 11:28:31 UTC) built-in shell (ash) Enter 'help' for a list of built-in commands. _______ ________ __ | |.-----.-----.-----.| | | |.----.| |_ | - || _ | -__| || | | || _|| _| |_______|| __|_____|__|__||________||__| |____| |__| W I R E L E S S F R E E D O M ----------------------------------------------------- ATTITUDE ADJUSTMENT (12.09, r36088) ----------------------------------------------------- * 1/4 oz Vodka Pour all ingredients into mixing * 1/4 oz Gin tin with ice, strain into glass. * 1/4 oz Amaretto * 1/4 oz Triple sec * 1/4 oz Peach schnapps * 1/4 oz Sour mix * 1 splash Cranberry juice ----------------------------------------------------- root@OpenWrt:/#
COPY HERE THE BOOTLOG ONCE OPENWRT IS INSTALLED AND RUNNING