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-====== Extending U-Boot support (common)  ====== 
  
-This page group together all the common [[http://www.denx.de/wiki/U-Boot|U-Boot]] informations (ie: not related with a specific board) 
- 
-===== Repository ===== 
- 
-Sources are available in the [[http://git-scm.com|Git]] repository: [[http://git.lacie-nas.org/?p=u-boot-lacie.git;a=summary|u-boot-lacie.git]]. At least, the following branches should be availables: 
- 
-  * **stable** is used to build the images distributed via a [[ftp://lacie-nas.org/u-boot|FTP repository]]. 
-  * **master** is a development branch, holding the patches waiting to be merged mainline. 
- 
-Checkout command: 
- 
-  git clone http://git.lacie-nas.org/u-boot-lacie.git 
-or 
-  git clone git://lacie-nas.org/u-boot-lacie.git 
- 
-===== Build ===== 
- 
-To compile U-Boot images, you could use the following commands (toolchain path, cross-compiler and board names to be replaced): 
- 
-  PATH=/usr/local/x-tools/arm-2010q1/bin/:$PATH CROSS_COMPILE=arm-none-eabi- make netspace_v2_config 
-  PATH=/usr/local/x-tools/arm-2010q1/bin/:$PATH CROSS_COMPILE=arm-none-eabi- make u-boot.kwb 
-   
-===== Downloads ===== 
- 
-For the supported boards, some pre-compiled U-Boot images are availables in the [[ftp://lacie-nas.org/u-boot|FTP repository]]. 
- 
-===== Install from a LaCie stock U-Boot ===== 
- 
-==== Why ? ==== 
- 
-  * The LaCie stock U-Boot comes with a huge limitation. At reset, U-Boot reinitialize the boot environment variables (stored in Flash) with some built-in values. This includes the boot commands sequence. As a consequence, the LaCie system layout (or partition map) can't be changed. By default, U-Boot will load the Linux kernel from partition 10 (update) or from partition 6 as a fallback (default). 
- 
-  * Save flash size (a LaCie U-Boot image size is ~450KB against ~230KB for a mainline one). 
- 
-  * Boot reliably from USB. 
- 
-  * Some command line enhancements: history, completion, scripting ... 
- 
-  * Be able to add a new feature. 
- 
-==== Update step by step ==== 
- 
-This section present step by step how to update the stock U-Boot with a mainline version. Both a serial or a network console can be used to connect to U-Boot. For this how-to, the netconsole way is preferred because the user don't have to build/buy a serial cable. 
- 
-=== Preparations === 
- 
-  * Create a work directory 
- 
-  $ mkdir /tmp/tools && cd /tmp/tools 
- 
-  * Get [[CLUNC|CLUNC]] 
- 
-  $ wget ftp://lacie-nas.org/tools/clunc-1.1.tar.gz 
-  $ tar xf clunc-1.1.tar.gz 
- 
-  * Get U-Boot **netconsole** utility 
- 
-  $ wget ftp://lacie-nas.org/tools/u-boot-netconsole.tar.gz 
-  $ tar xf u-boot-netconsole.tar.gz 
- 
-  * Setup and enable a TFTP server. The configuration really depends on your OS. For example, a Linux distribution could be use **inetd** (the configuration file is /etc/inetd.conf). 
- 
-  * Install the new u-boot image into the TFTP root directory (could be /var/tftpboot). 
- 
-  $ wget ftp://ftp.lacie-nas.org/u-boot/u-boot-netspace_v2.kwb -O /var/tftpboot/u-boot-netspace_v2.kwb 
-   
-=== Run CLUNC and connect to the LaCie U-Boot console === 
- 
-  $ cd /tmp/tools/clunc-1.1 
-  $ ./clunc -i <NAS_IP> 
-  Marvell>> version 
-  U-Boot 1.1.4 (Jan 17 2011 - 21:48:29) Marvell version: 3.4.16  LaCie 1.5.9 256MB 
-   
-=== Flash the new U-Boot image === 
- 
-  Marvell>> bubt u-boot-netspace_v2.kwb 
-  Using egiga0 device 
-  TFTP from server 192.168.0.13; our IP address is 192.168.0.17 
-  Filename 'u-boot-netspace_v2.kwb'. 
-  Load address: 0x2000000 
-  Loading: ########################################## 
-  done 
-  Bytes transferred = 214220 (344cc hex) 
-  Un-Protect Flash Monitor space 
-   
-  **Warning** 
-  If U-Boot Endiannes is going to change (LE->BE or BE->LE), Then Env parameters should be overriden.. 
-  Override Env parameters? (y/n) n 
-  Erase 0 - 125 sectors... 
-  ................................................................. 
-  ............................................................. 
-  Copy to Flash... done 
-  Protect Flash Monitor space 
-   
-=== Restart === 
- 
-  Marvell>> reset 
-   
-=== Retrieve the NAS IP address === 
- 
-U-Boot mainline don't provide a magic packet mechanism to configure the IP address. Instead DHCP is used. It means that [[CLUNC|CLUNC]] becomes useless from this point. 
- 
-Some possible ways to retrieve the NAS IP address: 
- 
-  * Use an utility like **dhcpdump**. 
-  * Look in the DHCP server log. 
- 
-=== Connect to U-Boot via netconsole === 
- 
-The netconsole configuration rely on some environment variables: **ipaddr**, **ncip**, **stdin**, **stdout** and **stderr** (for more information,  please refer to the file README.NetConsole included in U-Boot sources). After the update, this variables will be initialized with the default (or built-in) values and the netconsole is configured to broadcast messages. 
- 
-<note important> 
-**netcat** don't handle the UDP broadcast messages. The dedicated U-Boot tools **netconsole** and **ncb** must be used.  
-</note> 
- 
-  * Run **netconsole** and interrupt boot process (Ctrl-C): 
- 
-  $ ./tools/netconsole 192.168.1.111 
-  ^C   
-  ns2> version 
- 
-=== Default configuration === 
- 
-  ns2> print 
- 
-=== Configure U-Boot to suit your own needs === 
- 
-===== Some usage examples ===== 
- 
-==== Save environment on a SPI flash ==== 
- 
-  Marvell>> set bootargs console=ttyS0,115200 
-  Marvell>> saveenv 
-  Saving Environment to SPI Flash... 
-  SF: Detected MX25L4005A with page size 256, total 512 KiB 
-  Erasing SPI flash...Writing to SPI flash...done 
- 
-==== USB boot ==== 
- 
-  Marvell>> usb start 
-  Marvell>> usb storage 
-    Device 0: Vendor: UFD      Rev: 7.77 Prod: 
-              Type: Hard Disk 
-              Capacity: 125.0 MB = 0.1 GB (256000 x 512) 
-  Marvell>> fatls usb 0:1 
-              boot/ 
-   
-  0 file(s), 1 dir(s) 
-   
-  Marvell>> fatls usb 0:1 /boot 
-              ./ 
-              ../ 
-    4902372   uimage-kw-2.6.37-rc3-miniroot  
-   
-  1 file(s), 2 dir(s) 
-   
-  Marvell>> fatload usb 0:1 0x800000 /boot/uimage-kw-2.6.37-rc3-miniroot 4902372 
-  reading /boot/uimage-kw-2.6.37-rc3-miniroot 
-   
-  4902372 bytes read 
-  Marvell>> setenv bootargs console=ttyS0,115200 
-  Marvell>> bootm 0x800000 
-  ## Booting kernel from Legacy Image at 00800000 ... 
-     Image Name:   Linux-2.6.37-rc3-00799-g2dd0ff5- 
-     Image Type:   ARM Linux Kernel Image (uncompressed) 
-     Data Size:    4902308 Bytes = 4.7 MiB 
-     Load Address: 00008000 
-     Entry Point:  00008000 
-     Verifying Checksum ... OK 
-     Loading Kernel Image ... OK 
-  OK 
-   
-  Starting kernel ... 
- 
-==== Disk boot ==== 
- 
-  SoC:   Kirkwood 88F6281_A0 
-  DRAM:  256 MiB 
-  SF: Detected MX25L4005A with page size 256, total 512 KiB 
-  *** Warning - bad CRC, using default environment 
-   
-  In:    serial 
-  Out:   serial 
-  Err:   serial 
-  Net:   egiga0 
-  88E1116 Initialized on egiga0 
-  Marvell>> ide reset 
-   
-  Reset IDE: Bus 0: ........OK 
-    Device 0: Model: SAMSUNG HD103SI  Firm: 1AG01118 Ser#: S1Y5J1KS504652 
-              Type: Hard Disk 
-              Supports 48-bit addressing 
-              Capacity: 953869.7 MB = 931.5 GB (1953525168 x 512) 
-   
-  Marvell>> ide part 0 
-   
-  Partition Map for IDE device 0  --   Partition Type: DOS 
-   
-  Partition     Start Sector     Num Sectors     Type 
-      1                 63         1975932      83 
-      2          195334335       195334335      83 
-  Marvell>> ext2ls ide 0:1 /boot 
-  Failed to mount ext2 filesystem... 
-  <DIR>       4096 . 
-  <DIR>       4096 .. 
-           4507632 uImage-kw-2.6.36-rc2-pm-miniroot 
-   
-  Marvell>> ext2load ide 0:1 0x800000 /boot/uImage-kw-2.6.36-rc2-pm-miniroot 
-  Loading file "/boot/uImage-kw-2.6.36-rc2-pm-miniroot" from ide device 0:1 (hda1) 
-  4507632 bytes read 
-  Marvell>> bootm 0x800000 
-  ## Booting kernel from Legacy Image at 00800000 ... 
-     Image Name:   Linux-2.6.36-rc2-00011-g63a3f43- 
-     Image Type:   ARM Linux Kernel Image (uncompressed) 
-     Data Size:    4507568 Bytes = 4.3 MiB 
-     Load Address: 00008000 
-     Entry Point:  00008000 
-     Verifying Checksum ... OK 
-     Loading Kernel Image ... OK 
-  OK 
-   
-  Starting kernel ... 
- 
-==== Update a mainline U-Boot version ==== 
- 
-  ns2> setenv ipaddr 192.168.0.17; setenv serverip 192.168.0.13; 
-  ns2> tftpboot 0x800000 u-boot-netspace_v2.kwb 
-  Using egiga0 device 
-  TFTP from server 192.168.0.13; our IP address is 192.168.0.17 
-  Filename 'u-boot-netspace_v2.kwb'. 
-  Load address: 0x800000 
-  Loading: ########################################## 
-  done 
-  Bytes transferred = 214220 (344cc hex) 
-  ns2> fl probe 0:0 
-  SF: Detected MX25L4005A with page size 256, total 512 KiB 
-  512 KiB MX25L4005A at 0:0 is now current device 
-  ns2> sf erase 0 0x40000 
-  Usage: sf erase offset len 
-  ns2> sf erase 0 0x40000 
-  ns2> sf write 0x800000 0 0x40000 
-  ns2> reset 
-  resetting ... 
-   
-   
-  U-Boot 2010.12-00216-g5bbbf69 (Jan 24 2011 - 21:38:00) LaCie Network Space v2 
-   
-  SoC:   Kirkwood 88F6281_A0 
-  DRAM:  256 MiB 
-  SF: Detected MX25L4005A with page size 256, total 512 KiB 
-  *** Warning - bad CRC, using default environment 
-   
-  In:    serial 
-  Out:   serial 
-  Err:   serial 
-  Net:   egiga0 
-  88E1116 Initialized on egiga0 
-  Hit any key to stop autoboot:  3 
-  ns2> 
- 
-===== Links ===== 
- 
-  * [[http://www.denx.de/wiki/U-Boot|U-Boot project]] 
uboot_common.1310654875.txt.gz · Last modified: 2011/07/14 16:47 by simon

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