Introduction
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============
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Armadeus APFxx are Systems On Module (SOM) based on Freescale/NXP i.MX
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processors associated with an FPGA (except on APF28). Non volatile
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data are stored in on-module NOR or NAND Flash, depending on the
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model. These SOM can be used on Armadeus development boards or with
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custom docking boards.
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Supported platforms
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===================
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Buildroot currently supports the following Armadeus platforms with the
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associated defconfigs:
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* APF27 SOM + devt board -> armadeus_apf27_defconfig
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* APF51 SOM + devt board -> armadeus_apf51_defconfig
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* APF28 SOM + devt board -> armadeus_apf28_defconfig
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Vanilla Linux versions are preferred to Freescale's one in these
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configurations.
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How to build it
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===============
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Configure Buildroot
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-------------------
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Let's say you own an APFxx SOM with it's corresponding development
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board, all you have to do is:
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$ make armadeus_apfxx_defconfig
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where "apfxx" is the version of your SOM.
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Launch build
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------------
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$ make
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Result of the build
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-------------------
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When the build is finished, you will end up with:
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output/images/
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├── imx**-apfxxdev.dtb [1]
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├── rootfs.tar
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├── rootfs.ubi
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├── rootfs.ubifs
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└── uImage
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[1] Only if the kernel version used uses a Device Tree.
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Building U-Boot is currently not supported in these configurations.
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Installation
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============
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You will require a serial connection to the board and a TFTP server on
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your Host PC. Assuming your server is configured for exporting
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/tftpboot/ directory, you will have to copy the generated images to
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it:
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$ cp output/images/uImage /tftpboot/apfxx-linux.bin
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$ cp output/images/*.dtb /tftpboot/
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$ cp output/images/rootfs.ubi /tftpboot/apfxx-rootfs.ubi
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where "apfxx" is the version of your SOM, as used with _defconfigs.
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Then on your serial terminal, all you have to do is:
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* interrupt the boot process and access U-Boot console by pressing any
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key when booting,
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* configure board and server IP addresses with "ipaddr" and "serverip"
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environment variables,
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* if you want to update kernel:
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BIOS > run update_kernel
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* if you want to update device tree:
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BIOS > run update_dtb
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* if you want to update rootfs:
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BIOS > run update_rootfs
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That's it !
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