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Difference between revisions of "AM335x"
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− | == | + | ==Prepare card== |
+ | |||
+ | To make sure everything will run without problem wipe all data on the MMC: | ||
+ | $ sudo dd if=/dev/zero of=/dev/sdx bs=1k count=1024 | ||
+ | |||
+ | Format the disk: | ||
+ | |||
+ | $ sudo fdisk /dev/sdx << __EOF__ | ||
+ | > n | ||
+ | > | ||
+ | > | ||
+ | > | ||
+ | > | ||
+ | > w | ||
+ | > __EOF__ | ||
+ | |||
+ | Make ext4 filesystem | ||
+ | |||
+ | $ sudo mkfs.ext4 -F -O ^metadata_csum,^64bit /dev/sdx1 | ||
+ | |||
+ | '''NOTE:''' You MUST replace /dev/sdx with your device, e.g. /dev/sdc. | ||
+ | |||
+ | |||
+ | ==U-Boot== | ||
+ | |||
+ | ===Building U-Boot=== | ||
Make sure you have cross compiler: | Make sure you have cross compiler: | ||
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− | == | + | ===Writing U-Boot=== |
− | |||
− | |||
− | + | ====Writing to MMC==== | |
− | + | Insert your card and write '''MLO''' and '''u-boot.img''': | |
− | $ sudo | + | $ sudo dd if=MLO of=/dev/sdx count=1 seek=1 bs=128k |
− | + | $ sudo dd if=u-boot.img of=/dev/sdx count=2 seek=1 bs=384k | |
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− | $ sudo | ||
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− | == | ||
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− | |||
− | + | ==Kernel== | |
− | + | ===Building linux kernel=== |
Revision as of 05:55, 15 September 2016
Contents
Prepare card
To make sure everything will run without problem wipe all data on the MMC:
$ sudo dd if=/dev/zero of=/dev/sdx bs=1k count=1024
Format the disk:
$ sudo fdisk /dev/sdx << __EOF__ > n > > > > > w > __EOF__
Make ext4 filesystem
$ sudo mkfs.ext4 -F -O ^metadata_csum,^64bit /dev/sdx1
NOTE: You MUST replace /dev/sdx with your device, e.g. /dev/sdc.
U-Boot
Building U-Boot
Make sure you have cross compiler:
$ arm-linux-gnueabihf-gcc --version arm-linux-gnueabihf-gcc (Debian 5.4.0-6) 5.4.0 20160609 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE
If you don't have run:
$ sudo apt-get install gcc-5-arm-linux-gnueabihf
Get sources:
$ git clone git://git.denx.de/u-boot.git $ cd u-boot
The patch is built against specific commit, so reset repository:
$ git reset --hard b89dfcfd926b8224edd24608065eb9bb601c0d3b
Get and apply patch:
$ wget <patch name> $ git apply <patch name>
Build image, where <board_defconfig> is am335x_olimex_som_defconfig or am335x_olimex_som_nandboot_defconfig:
$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- <board_defconfig>
This will produce two files:
- MLO
- u-boot.img
Writing U-Boot
Writing to MMC
Insert your card and write MLO and u-boot.img:
$ sudo dd if=MLO of=/dev/sdx count=1 seek=1 bs=128k $ sudo dd if=u-boot.img of=/dev/sdx count=2 seek=1 bs=384k