The old way does not seem to work for RPi 3, as the UART pins are mapped differently and the NOOBS bootcode does not seem to read a config.txt. Signed-off-by: Roland Hieber <r.hieber@xxxxxxxxxxxxxx> --- Documentation/boards/bcm2835.rst | 34 ++++++++++++++++++++++++++-------- 1 file changed, 26 insertions(+), 8 deletions(-) diff --git a/Documentation/boards/bcm2835.rst b/Documentation/boards/bcm2835.rst index 13cebb01c4..1a78cfba3c 100644 --- a/Documentation/boards/bcm2835.rst +++ b/Documentation/boards/bcm2835.rst @@ -1,17 +1,35 @@ -Broadcom BCM2835 +Broadcom BCM283x ================ Raspberry Pi ------------ - 1. Prepare a card with a FAT filesystem. Download a tiny NOOBS LITE - zip archive and unpack it into FAT partition. - See http://www.raspberrypi.org/help/noobs-setup/ for details. + 1. Prepare an SD or microSD card with a FAT filesystem of at least 30 MB in size. + + 2. Download the `Raspberry Pi firmware`_ (120 MB), unzip it, and copy the + contents of the ``boot/`` folder to your card. - 2. Compile ``barebox.bin`` image (use ``rpi_defconfig``). - Copy it to the SD/microSD card and name it ``recovery.img``. + 3. Use ``make rpi_defconfig; make`` to build barebox. This will create the following images: - 3. Connect to board's UART (115200 8N1); + - ``images/barebox-raspberry-pi-1.img`` for the BCM2835/ARM1176JZF-S (Raspberry Pi 1) + - ``images/barebox-raspberry-pi-2.img`` for the BCM2836/CORTEX-A7 (Raspberry Pi 2) + - ``images/barebox-raspberry-pi-3.img`` for the BCM2837/CORTEX-A53 (Raspberry Pi 3, Raspberry Pi Zero) + + Copy the respective image for your model to your SD card and name it + ``barebox.img``. + + 4. Create a text file ``config.txt`` on the SD card with the following content:: + + kernel=barebox.img + enable_uart=1 + dtoverlay=pi3-miniuart-bt + + (For more information, refer to the `documentation for config.txt`_.) + + 5. Connect to board's UART (115200 8N1); Use PIN6 (GND), PIN8 (UART_TX), PIN10 (UART_RX) pins. - 4. Turn board's power on. + 6. Turn board's power on. + +.. _Raspberry Pi firmware: https://codeload.github.com/raspberrypi/firmware/zip/80e1fbeb78f9df06701d28c0ed3a3060a3f557ef +.. _documentation for config.txt: https://www.raspberrypi.org/documentation/configuration/config-txt/ -- 2.11.0 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
