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| author | Yann E. MORIN <yann.morin.1998@free.fr> | 2015-06-30 00:07:46 +0200 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2015-06-30 14:31:17 +0200 |
| commit | 6f999784b8b6ccb564a5670b950b8bc6ea7c5730 (patch) | |
| tree | 5a7a992cf80f1f54c7787f16ff20c5ceac65526e /board/raspberrypi | |
| parent | 76b00bde625237c3ad7613c0f37c7739652c8ca5 (diff) | |
boards/raspberrypi: update instructions
Now that we have a sanitised set of defconfig files, and we no longer
support non-DT setups, update and simplify the board readme file.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Floris Bos <bos@je-eigen-domein.nl>
Cc: Pascal de Bruijn <pmjdebruijn@pcode.nl>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'board/raspberrypi')
| -rw-r--r-- | board/raspberrypi/readme.txt | 48 |
1 files changed, 22 insertions, 26 deletions
diff --git a/board/raspberrypi/readme.txt b/board/raspberrypi/readme.txt index 4ead046ff..cf9587997 100644 --- a/board/raspberrypi/readme.txt +++ b/board/raspberrypi/readme.txt @@ -22,17 +22,14 @@ How to build it Configure Buildroot ------------------- -The raspberrypi_defconfig configuration is a minimal configuration with -all that is required to bring the Raspberry Pi up. You should base your -work on this defconfig: +There are two RaspberryPi defconfig files in Buildroot, one for each +major variant, which you should base your work on: - $ make raspberrypi_defconfig - -Alternatively, if you want to test support for the Device Tree: +For models A, B, A+ or B+: - $ make raspberrypi_dt_defconfig + $ make raspberrypi_defconfig -For Raspberry Pi 2 use a different defconfig: +And for model 2 B: $ make raspberrypi2_defconfig @@ -64,20 +61,23 @@ Result of the build After building, you should obtain this tree: output/images/ - +-- rootfs.tar [0] + +-- rootfs.tar [0] +-- rpi-firmware/ - | +-- bcm2708-rpi-b.dtb - | +-- bcm2708-rpi-b-plus.dtb - | +-- bcm2709-rpi-2-b.dtb | +-- bootcode.bin | +-- config.txt | +-- fixup.dat | `-- start.elf + +-- bcm2708-rpi-b.dtb [1] + +-- bcm2708-rpi-b-plus.dtb [1] + +-- bcm2709-rpi-2-b.dtb [1] `-- zImage [0] Note for Volatile: rootfs.tar will only be there if you kept "tar the root filesystem" option selected in "Filesystem images". +[1] Not all of them will be present, depending on the RaspberryPi + model you are using. + Prepare you SDCard ================== @@ -105,30 +105,26 @@ Install the binaries to the SDCard At the root of the boot partition, the Raspberry Pi must find the following files: - * bcm2708-rpi-b.dtb [1] - * bcm2708-rpi-b-plus.dtb [2] - * bcm2709-rpi-2-b.dtb [3] + * bcm2708-rpi-b.dtb [2] + * bcm2708-rpi-b-plus.dtb [3] + * bcm2709-rpi-2-b.dtb [4] * bootcode.bin * config.txt * fixup.dat * start.elf * zImage -[1] For models A and B -[2] For models A+ and B+ -[3] For model 2 +[2] For models A and B +[3] For models A+ and B+ +[4] For model 2 For example: - $ cp output/images/rpi-firmware/* /mnt/mountpointboot - -If your kernel does *not* have support for the Device Tree, then install -it with: - - $ cp output/images/zImage /mnt/mountpointboot + $ cp output/images/rpi-firmware/* /mnt/mountpointboot + $ cp output/images/*.dtb /mnt/mountpointboot -If your kernel *does* have support for the Device Tree, then install it -with: +The kernel image must be marked with a special header so that the +bootloader of the RaspberryPi knows it supports Device Tree: $ ./output/host/usr/bin/mkknlimg output/images/zImage /mnt/mountpointboot/zImage |