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boards: arm64: phycore_am62x_a53: Update documentation

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The latest Yocto release, PD23.1.0, has the CACHE_CMD included.
Therefore, the default image can be used to boot Zephyr.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
This commit is contained in:
Daniel Schultz 2023-05-11 16:50:28 +02:00 • committed by Carles Cufí
commit f18c0b5ba5
1 changed files with 14 additions and 36 deletions
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50
boards/arm64/phycore_am62x_a53/doc/index.rst
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@ -60,44 +60,15 @@ Serial Port
This board configuration uses a single serial communication channel with the
CPU's UART0.
U-Boot
******
SD Card
*******
The factory SD card from PHYTEC contains a U-Boot image that does not have
the cache commands enabled. These commands are required for a successful
boot of Zephyr. Follow these steps to rebuild U-Boot.
Install U-Boot dependencies:
https://u-boot.readthedocs.io/en/latest/build/gcc.html#dependencies
Clone the PHYTEC TI fork of U-Boot:
Download PHYTEC's official `WIC`_ and `bmap`_ files and flash the WIC file with
bmap-tools on a SD-card.
.. code-block:: console
git clone https://github.com/phytec/u-boot-phytec-ti.git
cd u-boot-phytec-ti
git checkout v2021.01_08.03.00.005-phy
Append ``CONFIG_CMD_CACHE=y`` to "configs/phycore_am62x_a53_defconfig"
Build U-Boot:
.. code-block:: console
export CROSS_COMPILE=aarch64-linux-gnu-
make phycore_am62x_a53_defconfig
make all
Overwrite ``u-boot.img`` on the SD card and power on the board.
U-Boot should now have the cache commands available:
.. code-block:: console
=> dcache
Data (writethrough) Cache is ON
=> icache
Instruction Cache is ON
bmaptool copy phytec-qt5demo-image-phyboard-lyra-am62xx-2.wic.xz /dev/sdX
Building
********
@ -124,8 +95,15 @@ Use U-Boot to load and kick zephyr.bin:
fatload mmc 1:1 0x82000000 zephyr.bin; dcache flush; icache flush; dcache off; icache off; go 0x82000000
References
==========
..
References
.. _PHYTEC website:
https://www.phytec.com/product/phycore-am62x/
.. _WIC:
https://download.phytec.de/Software/Linux/BSP-Yocto-AM62x/BSP-Yocto-AM62x-PD23.1.0/images/yogurt/phyboard-lyra-am62xx-2/phytec-qt5demo-image-phyboard-lyra-am62xx-2.wic.xz
.. _Bmap:
https://download.phytec.de/Software/Linux/BSP-Yocto-AM62x/BSP-Yocto-AM62x-PD23.1.0/images/yogurt/phyboard-lyra-am62xx-2/phytec-qt5demo-image-phyboard-lyra-am62xx-2.wic.bmap