(Added restoration of environment variables) |
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| − | == Compiling | + | == Compiling U-Boot with Device Tree Support for the GuruPlug Server Plus == |
| − | Download the latest version of | + | Download the latest version of U-Boot and extract the files to a working folder: |
<PRE> | <PRE> | ||
| Line 10: | Line 10: | ||
</PRE> | </PRE> | ||
| − | + | By default, the GuruPlug configuration does not enable Device Tree Support and needs to be manually enabled. To do this add the following to /include/configs/guruplug.h | |
| + | |||
| + | <PRE> | ||
| + | /* Enable flat device tree support */ | ||
| + | #define CONFIG_OF_LIBFDT | ||
| + | </PRE> | ||
| + | |||
| + | Now cross compile U-Boot using the GuruPlug configuration: | ||
<PRE> | <PRE> | ||
| Line 25: | Line 32: | ||
Nand page size = 0x800 | Nand page size = 0x800 | ||
Image Type: Kirkwood Boot from NAND Flash Image | Image Type: Kirkwood Boot from NAND Flash Image | ||
| − | Data Size: | + | Data Size: 273956 Bytes = 267.54 kB = 0.26 MB |
Load Address: 00600000 | Load Address: 00600000 | ||
Entry Point: 00600000 | Entry Point: 00600000 | ||
</PRE> | </PRE> | ||
| − | == Testing your new | + | === Testing your new U-Boot === |
| − | It is always a good idea to load your newly compiled version of | + | It is always a good idea to load your newly compiled version of U-Boot into RAM first and test it. |
<PRE> | <PRE> | ||
| Line 41: | Line 48: | ||
</PRE> | </PRE> | ||
| − | == Flasing | + | Note: Older versions of U-Boot may not always chain load newer versions, and hence this may not always yield confidence-building results. |
| + | |||
| + | === Flasing U-Boot === | ||
| − | When you are confident and ready to take the plunge, you can burn | + | When you are confident and ready to take the plunge, you can burn U-Boot to flash using: |
<PRE> | <PRE> | ||
| Line 53: | Line 62: | ||
</PRE> | </PRE> | ||
| − | Upon reboot, you should be greeted with your new | + | Upon reboot, you should be greeted with your new U-Boot. Congratulations. |
<PRE> | <PRE> | ||
Download the latest version of U-Boot and extract the files to a working folder:
wget ftp://ftp.denx.de/pub/u-boot/u-boot-latest.tar.bz2 tar -xjf u-boot-latest.tar.bz2 cd u-boot-2014.01
By default, the GuruPlug configuration does not enable Device Tree Support and needs to be manually enabled. To do this add the following to /include/configs/guruplug.h
/* Enable flat device tree support */ #define CONFIG_OF_LIBFDT
Now cross compile U-Boot using the GuruPlug configuration:
make CROSS_COMPILE=arm-linux-gnueabi- distclean make CROSS_COMPILE=arm-linux-gnueabi- guruplug_config make CROSS_COMPILE=arm-linux-gnueabi- u-boot.kwb
Compiling should conclude with output similar to that below.
Preparing kirkwood boot image to boot from nand Nand ECC mode = default Nand page size = 0x800 Image Type: Kirkwood Boot from NAND Flash Image Data Size: 273956 Bytes = 267.54 kB = 0.26 MB Load Address: 00600000 Entry Point: 00600000
It is always a good idea to load your newly compiled version of U-Boot into RAM first and test it.
setenv ipaddr 192.168.0.250 setenv serverip 192.168.0.251 tftp 0x800000 u-boot.kwb go 0x800200
Note: Older versions of U-Boot may not always chain load newer versions, and hence this may not always yield confidence-building results.
When you are confident and ready to take the plunge, you can burn U-Boot to flash using:
setenv ipaddr 192.168.0.250 setenv serverip 192.168.0.251 tftp 0x6400000 u-boot.kwb nand erase 0x0 0x100000 nand write.e 0x6400000 0x0 0x100000
Upon reboot, you should be greeted with your new U-Boot. Congratulations.
U-Boot 2014.01 (Mar 25 2014 - 04:50:06) Marvell-GuruPlug SoC: Kirkwood 88F6281_A1 DRAM: 512 MiB WARNING: Caches not enabled NAND: 512 MiB *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Net: egiga0 Warning: failed to set MAC address , egiga1 Warning: failed to set MAC address 88E1121 Initialized on egiga0 88E1121 Initialized on egiga1 Hit any key to stop autoboot: 0 Marvell>>
You will need to restore your ethernet MAC addresses. They can be found on the nameplate of your GuruPlug.
Marvell>> setenv ethaddr 00:50:43:01:83:5e Marvell>> setenv eth1addr 00:50:43:01:83:5f Marvell>> saveenv Saving Environment to NAND... Erasing NAND... Erasing at 0x60000 -- 100% complete. Writing to NAND... OK