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toh:mikrotik:rb493g [2013/01/09 11:26]
toh:mikrotik:rb493g [2014/10/09 13:47] (current)
theoradicus add gt32flash tag
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The bootloader is able to load an image in ELF-format via BOOTP/DHCP and TFTP into RAM and execute it. The bootloader is able to load an image in ELF-format via BOOTP/DHCP and TFTP into RAM and execute it.
-=== Setup another OpenWrt router as host ===+=== Use another OpenWrt router as netboot server ===
This is the easiest way to achieve a live boot of your RB493G, but it requires that you already have an OpenWrt router with net-access available. You will need to obtain an elf-image for the RB493G, and make it available to the other router. If you have enough memory available on the other router, you can put the image on the /tmp folder there, e.g., like this: This is the easiest way to achieve a live boot of your RB493G, but it requires that you already have an OpenWrt router with net-access available. You will need to obtain an elf-image for the RB493G, and make it available to the other router. If you have enough memory available on the other router, you can put the image on the /tmp folder there, e.g., like this:
<code>ssh root@192.168.1.1 <code>ssh root@192.168.1.1
-wget --directory-prefix=/tmp http://downloads.openwrt.org/attitude_adjustment/12.09-rc1/ar71xx/nand/openwrt-ar71xx-nand-vmlinux-initramfs.elf</code>+wget --directory-prefix=/tmp http://downloads.openwrt.org/attitude_adjustment/12.09-beta2/ar71xx/nand/openwrt-ar71xx-nand-vmlinux-initramfs.elf</code>
Now enable dnsmasq's built in tftp server, and point it to the correct locations, e.g., like this: Now enable dnsmasq's built in tftp server, and point it to the correct locations, e.g., like this:
{{ :toh:mikrotik:tftpnetbootconfig.png?630 |Setting up netboot in Luci, note the full path for the filename. }} {{ :toh:mikrotik:tftpnetbootconfig.png?630 |Setting up netboot in Luci, note the full path for the filename. }}
That's it, Save and apply, connect the Eth1/WAN port of RB493G to one of the other routers LAN ports, and continue to [[toh:mikrotik:rb493g#setup.the.routerboard|Setup the Routerboard]]. That's it, Save and apply, connect the Eth1/WAN port of RB493G to one of the other routers LAN ports, and continue to [[toh:mikrotik:rb493g#setup.the.routerboard|Setup the Routerboard]].
-=== Setup a Debian based host ===+=== Use a Debian based server for netboot ===
You need a BOOTP- and a TFTP-server on your host-machine, we use ''dnsmasq'' here, since it can provide both services. Install dnsmasq with: You need a BOOTP- and a TFTP-server on your host-machine, we use ''dnsmasq'' here, since it can provide both services. Install dnsmasq with:
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  - enable dnsmasq's built-in TFTP-server <code>enable-tftp</code>   - enable dnsmasq's built-in TFTP-server <code>enable-tftp</code>
  - set the root directory-for files available via TFTP. <code>tftp-root=/srv/tftp</code>   - set the root directory-for files available via TFTP. <code>tftp-root=/srv/tftp</code>
-  - download initramfs-kernel-image into root-directory of the TFTP-server: <code>wget --directory-prefix=/srv/tftp http://www.ozo.com/airo/openwrt/firmware/latest/2.6/ar71xx/26878/openwrt-ar71xx-nand-vmlinux-initramfs.elf</code>+  - download initramfs-kernel-image into root-directory of the TFTP-server: <code>wget --directory-prefix=/srv/tftp http://downloads.openwrt.org/attitude_adjustment/12.09-beta2/ar71xx/nand/openwrt-ar71xx-nand-vmlinux-initramfs.elf</code>
  - set filename of kernel image for tftp-server/BOOTP:<code>dhcp-boot=/srv/tftp/openwrt-ar71xx-nand-vmlinux-initramfs.elf</code>   - set filename of kernel image for tftp-server/BOOTP:<code>dhcp-boot=/srv/tftp/openwrt-ar71xx-nand-vmlinux-initramfs.elf</code>
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Press **Enter** and you are in the console of OpenWRT running from RAM and booted via BOOTP/TFTP. Press **Enter** and you are in the console of OpenWRT running from RAM and booted via BOOTP/TFTP.
-Note that you may need to set dns servers to get net-access. Enter a working dns for you in+Note that you may need to set dns servers to get net-access while running the netbooted image. Enter a working dns for you in
<code>vi /tmp/resolv.conf.auto</code> <code>vi /tmp/resolv.conf.auto</code>
then restart dnsmasq to make the change effective (cross-check that you indeed have net-access afterwords): then restart dnsmasq to make the change effective (cross-check that you indeed have net-access afterwords):
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  - Execute:   - Execute:
<code> <code>
-wget2nand http://downloads.openwrt.org/attitude_adjustment/12.09-beta/ar71xx/nand/+wget2nand http://downloads.openwrt.org/attitude_adjustment/12.09/ar71xx/nand/
</code> </code>
-You can adjust the path-part dependend on the OpenWRT-version ('attitude_adjustment/12.09-beta'), but make sure you use the 'ar71xx/nand/'-branch and at least version '12.09-beta'.+You can adjust the path-part dependend on the OpenWRT-version ('attitude_adjustment/12.09'), but make sure you use the 'ar71xx/nand/'-branch and at least version '12.09-rc2'.
==== Upgrading OpenWrt ==== ==== Upgrading OpenWrt ====
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==== Micro-SD-Card-Reader ==== ==== Micro-SD-Card-Reader ====
-Does it work for anyone?+The SD-card reader is now supposed to work, but the needed patch is currently not in trunk. You will find the ticket with history here: https://dev.openwrt.org/ticket/12349
 +Hence precompiled images with working SD-card reader is not yet available from the OpenWrt server. Until that is resolved, you can find compiled kernel and rootfs here:
 +http://ubuntuone.com/1bZTk4vlKwroZezcdeJa4l
 +http://ubuntuone.com/2V1BoearwvvMOsNzUz7mcx
 +
 +Provide them on a web-server, or copy them manually over to the kernel and rootfs partitions on the nand.
==== USB ==== ==== USB ====
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See [[doc:howto:usb.essentials]] for configuration. See [[doc:howto:usb.essentials]] for configuration.
- 
-=== USB-MOD === 
- 
-Components: 
- 
-| 1x | PCB | 
-| 1x | USB-2.0-dual-A-socket | 
-| 1x | USB-2.0- A-plug | 
-| 1x | Traco TSR 1-2450 step-down-converter 5VDC/1A (doesn't need any other components like capacitors or heatsink) | 
-| 1x | Multifuse 60VDC/0,5A I<sub>hold</sub>/1A I<sub>trip</sub> | 
- 
-Proto-type and diagrams/layouts aren't beauties, but maybe someone with more Cadsoft-Eagle-experience can make a nice circuit-diagram and a real PCB-layout. {{:toh:mikrotik:rb493g-usb-mod.zip|Eagle files and datasheets}} ;-) 
- 
-Rudimentary circuit-diagram with USB-2.0 data-port (1) and generic USB-2.0 charger port (2), both supplied by a step-down-converter via the fan-connector of the RB493G: 
-{{:toh:mikrotik:rb493g_usb-mod_circuit-diagram.png|}} 
- 
-Rudimentary PCB-layout, not applicable:\\  
-{{:toh:mikrotik:rb493g-usb-mod_pcb.png|}} 
- 
-USB-mod prototype top-view:\\  
-{{:toh:mikrotik:usb-mod-top.jpg|}} 
- 
-USB-mod prototype bottom-view:\\  
-{{:toh:mikrotik:usb-mod-bottom.jpg|}} 
- 
-USB-mod prototype attached:\\  
-{{:toh:mikrotik:usb-mod-attached.jpg|}} 
===== Hardware ===== ===== Hardware =====
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==== Photos ==== ==== Photos ====
-Enclosure:+Casing: Mikrotik CA493 with two N-pigtails and -antennas (antennas are ALFA ARS-N19CW, 2.4GHz 9dBi - pigtails and antennas not included in enclosure package)
-Enclosure Mikrotik CA493 with two N-pigtails and -antennas (antennas are ALFA ARS-N19CW, 2.4GHz 9dBi - pigtails and antennas not included in enclosure package) +{{:toh:mikrotik:case_antennas.jpg?400|}}
- +
-{{:toh:mikrotik:case_antennas.jpg|}}+
//Front:// //Front://
-Enclosure Mikrotik CA493 with serial port, ethernet-port, LEDs and power-connector of Routerboard RB493G+Casing: Mikrotik CA493 with serial port, Ethernet-port, LEDs and power-connector of Routerboard RB493G
-{{:toh:mikrotik:frontside.jpg|}}+{{:toh:mikrotik:frontside.jpg?400|}}
//Back:// //Back://
-Enclosure Mikrotik CA493 with two N-pigtails (not included), multi-purpose hole (e.g. N-connector, Swivel-antenna, ...) and ground-screw+Casing: Mikrotik CA493 with two N-pigtails (not included), multi-purpose hole (e.g. N-connector, Swivel-antenna, ...) and ground-screw
-{{:toh:mikrotik:backside.jpg|}}+{{:toh:mikrotik:backside.jpg?400|}}
//Left/Top:// //Left/Top://
-Enclosure Mikrotik CA493 with eight ethernet-ports of Routerboard RB493G+Casing: Mikrotik CA493 with eight Ethernet-ports of Routerboard RB493G
-{{:toh:mikrotik:left_top.jpg|}}+{{:toh:mikrotik:left_top.jpg?400|}}
//Right:// //Right://
-Enclosure Mikrotik CA493 with venting holes+Casing: Mikrotik CA493 with venting holes
-{{:toh:mikrotik:right.jpg|}}+{{:toh:mikrotik:right.jpg?400|}}
//Bottom:// //Bottom://
-Enclosure Mikrotik CA493 +Casing: Mikrotik CA493
-{{:toh:mikrotik:bottom.jpg|}}+{{:toh:mikrotik:bottom.jpg?400|}}
-Enclosure opened:+Casing opened:
-Enclosure Mikrotik CA493 with two N-pigtails (not included), Routerboard 493G and Routerboard R52nM (Wifi-card)+Casing: Mikrotik CA493 with two N-pigtails (not included), Routerboard 493G and Routerboard R52nM (Wifi-card)
-{{:toh:mikrotik:case_pcb.jpg|}}+{{:toh:mikrotik:case_pcb.jpg?400|}}
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In worst case keep "Reset"-button pressed when powering on the Routerboard to access the recovery-boot-loader via serial console. In worst case keep "Reset"-button pressed when powering on the Routerboard to access the recovery-boot-loader via serial console.
That way the Routerboard can be re-flashed with a RouterOS-image (NPK-file) using the origin MikroTik-Netinstall-software (BOOTP/TFTP). That way the Routerboard can be re-flashed with a RouterOS-image (NPK-file) using the origin MikroTik-Netinstall-software (BOOTP/TFTP).
 +
 +
 +===== Hardware Mods =====
 +  - as a beginner, you really should inform yourself about [[doc:hardware:soldering]] in general and then even obtain some experience!
 +
 +==== USB-Modification ====
 +
 +Components:
 +
 +| 1x | PCB |
 +| 1x | USB-2.0-dual-A-socket, e.g., [[http://dx.com/p/diy-dual-usb-female-type-a-180-degree-dip-socket-connector-silver-10-piece-pack-127653|these]]. |
 +| 1x | USB-2.0- A-plug, e.g., [[http://dx.com/p/diy-usb-4-pin-female-type-a-smt-socket-connector-silver-10-piece-pack-127642|these]]. |
 +| 1x | Traco TSR 1-2450 step-down-converter 5VDC/1A (doesn't need any other components like capacitors or heatsink). As of this writing you will find the LM7805V voltage regulator at [[http://dx.com/p/lm7805l-5v-voltage-regulator-ics-10-pcs-157382 | DealExtreme]] |
 +| 1x | Multifuse 60VDC/0,5A I<sub>hold</sub>/1A I<sub>trip</sub> |
 +
 +Proto-type and diagrams/layouts aren't beauties, but maybe someone with more Cadsoft-Eagle-experience can make a nice circuit-diagram and a real PCB-layout: {{:toh:mikrotik:rb493g-usb-mod.zip|Eagle files and datasheets}} ;-)
 +
 +Rudimentary circuit-diagram with USB-2.0 data-port (1) and generic USB-2.0 charger port (2), both supplied by a step-down-converter via the fan-connector of the RB493G:
 +{{:toh:mikrotik:rb493g_usb-mod_circuit-diagram.png?400|}}
 +
 +Rudimentary PCB-layout, not applicable:\\
 +{{:toh:mikrotik:rb493g-usb-mod_pcb.png?400|}}
 +
 +USB-mod prototype top-view:\\
 +{{:toh:mikrotik:usb-mod-top.jpg?400|}}
 +
 +USB-mod prototype bottom-view:\\
 +{{:toh:mikrotik:usb-mod-bottom.jpg?400|}}
 +
 +USB-mod prototype attached:\\
 +{{:toh:mikrotik:usb-mod-attached.jpg?400|}}
 +
===== Tags ===== ===== Tags =====
For some Help with the Tags, please have a look here: [[meta/tags]] For some Help with the Tags, please have a look here: [[meta/tags]]
-{{tag>GigabitEthernet FastEthernet 9Port 2PHY USB DetachableAntenna 256RAM 128Flash MIPS MIPS32 24Kc}} +{{tag>GigabitEthernet 2NIC 0WNIC 9Port USB DetachableAntenna 256RAM 128Flash gt32flash miniPCI 3miniPCI MIPS MIPS32 24Kc}}

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