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authorWadim Egorov2024-06-20 14:05:54 +0200
committerTom Rini2024-07-05 13:57:01 -0600
commitd36394cff8cee764aea75860ceac4655f7f3e944 (patch)
tree931290afd1acbb7935ae61d25946e312b9791a48
parent747ae744561bf5a9ee069d48c1bfc94a18e1c015 (diff)
doc: board: phytec: phycore-am6: Describe UART based boot
Describe how to boot via UART. Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
-rw-r--r--doc/board/phytec/phycore-am62x.rst17
-rw-r--r--doc/board/phytec/phycore-am64x.rst19
2 files changed, 36 insertions, 0 deletions
diff --git a/doc/board/phytec/phycore-am62x.rst b/doc/board/phytec/phycore-am62x.rst
index ce7ec5545a6..a7ce2c58825 100644
--- a/doc/board/phytec/phycore-am62x.rst
+++ b/doc/board/phytec/phycore-am62x.rst
@@ -118,6 +118,23 @@ tiboot3.bin, tispl.bin and u-boot.img are stored on the uSD card.
fatload mmc 1 ${loadaddr} u-boot.img
mtd write ospi.u-boot ${loadaddr} 0 ${filesize}
+UART based boot
+---------------
+
+To boot the board via UART, set the switches to UART mode and connect to the
+micro USB port labeled as "Debug UART". After power-on the build artifacts
+needs to be uploaded one by one with a tool like sz.
+
+Example bash script sequence for running on a Linux host PC feeding all boot
+artifacts needed to the device. Assuming the host uses /dev/ttyUSB0 as
+the main domain serial port:
+
+.. prompt:: bash $
+
+ stty -F /dev/ttyUSB0 115200
+ sb --xmodem tiboot3.bin > /dev/ttyUSB0 < /dev/ttyUSB0
+ sb --ymodem tispl.bin > /dev/ttyUSB0 < /dev/ttyUSB0
+ sb --ymodem u-boot.img > /dev/ttyUSB0 < /dev/ttyUSB0
Boot Modes
----------
diff --git a/doc/board/phytec/phycore-am64x.rst b/doc/board/phytec/phycore-am64x.rst
index 2b9cd32c508..68d78ad7c25 100644
--- a/doc/board/phytec/phycore-am64x.rst
+++ b/doc/board/phytec/phycore-am64x.rst
@@ -119,6 +119,25 @@ tiboot3.bin, tispl.bin and u-boot.img are stored on the uSD card.
fatload mmc 1 ${loadaddr} u-boot.img
mtd write ospi.u-boot ${loadaddr} 0 ${filesize}
+UART based boot
+---------------
+
+To boot the board via UART, set the switches to UART mode and connect to the
+micro USB port labeled as "Debug UART". After power-on the build artifacts
+needs to be uploaded one by one with a tool like sz.
+
+Example bash script sequence for running on a Linux host PC feeding all boot
+artifacts needed to the device. Assuming the host uses /dev/ttyUSB0 as
+the main domain serial port:
+
+.. prompt:: bash $
+
+ stty -F /dev/ttyUSB0 115200
+ sb --xmodem tiboot3.bin > /dev/ttyUSB0 < /dev/ttyUSB0
+ # Resend tiboot3.bin a 2nd time due to ErrataID:i2331
+ sb --xmodem tiboot3.bin > /dev/ttyUSB0 < /dev/ttyUSB0
+ sb --ymodem tispl.bin > /dev/ttyUSB0 < /dev/ttyUSB0
+ sb --ymodem u-boot.img > /dev/ttyUSB0 < /dev/ttyUSB0
Boot Modes
----------