On 27.02.20 01:37, Denis 'GNUtoo' Carikli wrote:
This documents the u-boot installation procedure and the hardware in order to get started.
Thanks for adding this documentation!
Since you added SYSBOOT support in this series, it also might be good to mention this (and maybe how to use it) in the documentation. Sorry for again bringing up new wishes here, but due to the corrections below unfortunately we need a new version of this patch anyway.
Signed-off-by: Denis 'GNUtoo' Carikli GNUtoo@cyberdimension.org
To ease the review process it is good style to add a patch revision history below the sign-off after a "---" separator. This would look like --- changes in v4: - bla
This is not a problem for this particular patch, just as hint for future patch submissions.
doc/board/index.rst | 1 + doc/board/tbs/index.rst | 9 ++ doc/board/tbs/tbs2910.rst | 179 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 189 insertions(+) create mode 100644 doc/board/tbs/index.rst create mode 100644 doc/board/tbs/tbs2910.rst
This new board specific documentation should be added to the board/tbs/tbs2910/MAINTAINERS file.
diff --git a/doc/board/index.rst b/doc/board/index.rst index b8b956d730..4564c8245f 100644 --- a/doc/board/index.rst +++ b/doc/board/index.rst @@ -16,4 +16,5 @@ Board-specific doc renesas/index rockchip/index sifive/index
- tbs/index xilinx/index
diff --git a/doc/board/tbs/index.rst b/doc/board/tbs/index.rst new file mode 100644 index 0000000000..b677bc624f --- /dev/null +++ b/doc/board/tbs/index.rst @@ -0,0 +1,9 @@ +.. SPDX-License-Identifier: GPL-2.0+
+TBS +===
+.. toctree::
- :maxdepth: 2
- tbs2910
diff --git a/doc/board/tbs/tbs2910.rst b/doc/board/tbs/tbs2910.rst new file mode 100644 index 0000000000..2fc84c66ec --- /dev/null +++ b/doc/board/tbs/tbs2910.rst @@ -0,0 +1,179 @@ +TBS2910 Matrix ARM miniPC +=========================
+Building +-------- +To build u-boot for the TBS2910 Matrix ARM miniPC, you can use the following +procedure:
+First add the ARM toolchain to your PATH
+Then setup the ARCH and cross compilation environment variables.
+When this is done you can then build u-boot for the TBS2910 Matrix ARM miniPC +with the following commands:
+.. code-block:: none
- make mrproper
- make tbs2910_defconfig
- make
+Once the build is complete, you can find the resulting image as u-boot.imx in +the current directory.
+UART +---- +The UART voltage is at 3.3V and its settings are 115200bps 8N1
+BOOT/UPDATE boot switch: +------------------------ +The BOOT/UPDATE switch (SW11) is connected to the BOOT_MODE0 and +BOOT_MODE1 SoC pins. It has "BOOT" and "UPDATE" markings both on +the PCB and on the plastic case.
+When set to the "UPDATE" position, the SoC will use the "Boot From Fuses" +configuration, and since BT_FUSE_SEL is 0, this makes the SOC jump to serial +downloader.
+When set in the "BOOT" position, the SoC will use the "Internal boot" +configuration, and since BT_FUSE_SEL is 0, it will then use the GPIO pins +for the boot configuration.
+SW6 binary DIP switch array on the PCB revision 2.1: +---------------------------------------------------- +On that PCB revision, SW6 has 8 positions.
+Switching a position to ON sets the corresponding +register to 1.
+See the following table for a correspondence between the switch positions and +registers:
+=============== ============ +Switch position Register +=============== ============ +1 BOOT_CFG2[3] +2 BOOT_CFG2[4] +3 BOOT_CFG2[5] +4 BOOT_CFG2[6] +5 BOOT_CFG1[4] +6 BOOT_CFG1[5] +7 BOOT_CFG1[6] +8 BOOT_CFG1[7] +=============== ============
+For example:
- To boot from the eMMC: 1:ON , 2:ON, 3:ON, 4:OFF, 5:OFF, 6:ON, 7:ON, 8:ON
Due to the schematic we need 8:OFF.
- To boot from the microSD slot: 1: ON, 2: OFF, 3: OFF, 4: OFF, 5:OFF, 6:OFF,
- 7:ON, 8:OFF
- To boot from the SD slot: 1: OFF, 2: ON, 3: OFF, 4: OFF, 5:OFF, 6:OFF, 7:ON,
- 8:OFF
- To boot from SATA: 5:OFF, 6:ON, 7:OFF, 8:OFF
Again due to the schematic we need 1:OFF in addition. Probably also a good idea to set 2,3,4 OFF.
Thanks for improving tbs2910 support and documentation, Soeren
+You can refer to the BOOT_CFG registers in the I.MX6Q reference manual for +additional details.
+SW6 binary DIP switch array on the PCB revision 2.3: +---------------------------------------------------- +On that PCB revision, SW6 has only 4 positions.
+Switching a position to ON sets the corresponding +register to 1.
+See the following table for a correspondence between the switch positions and +registers:
+=============== ============ +Switch position Register +=============== ============ +1 BOOT_CFG2[3] +2 BOOT_CFG2[4] +3 BOOT_CFG2[5] +4 BOOT_CFG1[5] +=============== ============
+For example:
+- To boot from the eMMC: 1:ON, 2:ON, 3:ON, 4:ON +- To boot from the microSD slot: 1:ON, 2:OFF, 3:OFF, 4:OFF +- To boot from the SD slot: 1:OFF, 2:ON, 3:OFF, 4:OFF
+You can refer to the BOOT_CFG registers in the I.MX6Q reference manual for +additional details.
+Loading u-boot from USB: +------------------------ +If you need to load u-boot from USB, you can use the following instructions:
+First build imx_usb_loader, as we will need it to load u-boot from USB. This +can be done with the following commands:
+.. code-block:: none
- git clone git://github.com/boundarydevices/imx_usb_loader.git
- cd imx_usb_loader
- make
+This will create the resulting imx_usb binary.
+When this is done, you can copy the u-boot.imx image that you built earlier +in in the imx_usb_loader directory.
+You will then need to power off the TBS2910 Matrix ARM miniPC and make sure that +the boot switch is set to "UPDATE"
+Once this is done you can connect an USB cable between the computer that will +run imx_usb and the TBS2910 Matrix ARM miniPC.
+If you also need to access the u-boot console, you will also need to connect an +UART cable between the computer running imx_usb and the TBS2910 Matrix ARM +miniPC.
+Once everything is connected you can finally power on the TBS2910 Matrix ARM +miniPC. The SoC will then jump to the serial download and wait for you.
+Finlay, you can load u-boot through USB with with the following command:
+.. code-block:: none
- sudo ./imx_usb -v u-boot.imx
+The u-boot boot messages will then appear in the serial console.
+Install u-boot on the eMMC: +--------------------------- +To install u-boot on the eMMC, you first need to boot the TBS2910 Matrix ARM +miniPC.
+Once booted, you can flash u-boot.imx to mmcblk0boot0 with the +following commands:
+.. code-block:: none
- sudo echo 0 >/sys/block/mmcblk0boot0/force_ro
- sudo dd if=u-boot.imx of=/dev/mmcblk0boot0 bs=1k seek=1; sync
+Note that the eMMC card node may vary, so adjust this as needed.
+Once the new u-boot version is installed, to boot on it you then need to power +off the TBS2910 Matrix ARM miniPC.
+Once it is off, you need make sure that the boot switch is set to "BOOT" and +that the SW6 switch is set to boot on the eMMC as described in the previous +sections.
+If you also need to access the u-boot console, you will also need to connect an +UART cable between the computer running imx_usb and the TBS2910 Matrix ARM +miniPC.
+You can then power up the TBS2910 Matrix ARM miniPC and U-Boot messages will +appear in the serial console.
+Links: +------
- The schematics for the revision 2.1 of the TBS2910 Matrix ARM miniPC.
- SoC reference manual for additional details on the BOOT_CFG registers.