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--- uboot_common [2011/07/14 15:02] – Create a page to group together all the 'common' U-Boot informatio 82.234.233.9
+++ uboot_common [2011/07/15 23:28] (current) – delete page simon
@@ Line 1: / Line 1: @@
-====== Extending U-Boot support (common)  ======
-This page group together all the common 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 ===
-  * Get [[CLUNC|CLUNC]]
-  * Get U-Boot netconsole utility
-  * Enable a TFTP server
-  * Install the new u-boot image in 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 ===
-  $ ./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-new.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
-  * Install the U-Boot **netconsole** tool.
-Note that U-Boot mainline don't provide a magic packet mechanism to configure the IP address. It means that [[CLUNC|CLUNC]] becomes useless from this point. 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: the IP address is 192.168.1.111 and the netconsole is configured to broadcast messages. As a consequence, the server IP **must belong** to the subnetwork 192.168.1.0. Moreover **netcat** don't handle the broadcast messages. Instead, the U-Boot tools **netconsole** and **ncb** must be used.
-  * Connect to U-Boot via netconsole and interrupt boot process (Ctrl-C).
-  $ ./tools/netconsole 192.168.1.111
-  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
-  SF: disable write protection
-  *** Warning - bad CRC, using default environment
-  In:    serial
-  Out:   serial
-  Err:   serial
-  Net:   egiga0
-E1116 Initialized on egiga0
-  Hit any key to stop autoboot:  3
-  ns2>
-===== Some usage examples =====
-==== Save environment on 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/
-file(s), 1 dir(s)
-  Marvell>> fatls usb 0:1 /boot
-              ./
-              ../
-    4902372   uimage-kw-2.6.37-rc3-miniroot
-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
-E1116 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
-                 63         1975932      83
-          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
-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
-E1116 Initialized on egiga0
-  Hit any key to stop autoboot:  3
-  ns2>
-===== Links =====
-  * [[http://www.denx.de/wiki/U-Boot|U-Boot project]]

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