[PATCH v3 2/2] doc: board: phytec: Add phyCORE-AM62x

Wadim Egorov w.egorov at phytec.de
Fri Dec 8 16:33:11 CET 2023 

Add documentation for PHYTEC phyCORE-AM62x SoM.

Signed-off-by: Wadim Egorov <w.egorov at phytec.de>
Reviewed-by: Dhruva Gole <d-gole at ti.com>
---
v3:
  - Add boot modes chapter
  - Reference tiboot3.bin instead of GP binary for default flashing
  - Minor spelling fixes
  - Pick up Reviewed-by: Dhruva Gole <d-gole at ti.com>
---
 doc/board/phytec/index.rst         |   1 +
 doc/board/phytec/phycore-am62x.rst | 158 +++++++++++++++++++++++++++++
 doc/board/ti/k3.rst                |   1 +
 3 files changed, 160 insertions(+)
 create mode 100644 doc/board/phytec/phycore-am62x.rst

diff --git a/doc/board/phytec/index.rst b/doc/board/phytec/index.rst
index a5b442045e..b914cc3fbd 100644
--- a/doc/board/phytec/index.rst
+++ b/doc/board/phytec/index.rst
@@ -6,5 +6,6 @@ PHYTEC
 .. toctree::
    :maxdepth: 2
 
+   phycore-am62x
    phycore-imx8mm
    phycore-imx8mp
diff --git a/doc/board/phytec/phycore-am62x.rst b/doc/board/phytec/phycore-am62x.rst
new file mode 100644
index 0000000000..de73226183
--- /dev/null
+++ b/doc/board/phytec/phycore-am62x.rst
@@ -0,0 +1,158 @@
+.. SPDX-License-Identifier: GPL-2.0+
+.. sectionauthor:: Wadim Egorov <w.egorov at phytec.de>
+
+phyCORE-AM62x
+=============
+
+The `phyCORE-AM62x <https://www.phytec.com/product/phycore-am62x>`_ is a
+SoM (System on Module) featuring TI's AM62x SoC. It can be used in combination
+with different carrier boards. This module can come with different sizes and
+models for DDR, eMMC, SPI NOR Flash and various SoCs from the AM62x family.
+
+A development Kit, called `phyBOARD-Lyra <https://www.phytec.com/product/phyboard-am62x>`_
+is used as a carrier board reference design around the AM62x SoM.
+
+Quickstart
+----------
+
+* Download sources and TI firmware blobs
+* Build Trusted Firmware-A
+* Build OP-TEE
+* Build U-Boot for the R5
+* Build U-Boot for the A53
+* Create bootable uSD Card
+* Boot
+
+Sources
+-------
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_boot_sources
+    :end-before: .. k3_rst_include_end_boot_sources
+
+Build procedure
+---------------
+
+Setup the environment variables:
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_common_env_vars_desc
+    :end-before: .. k3_rst_include_end_common_env_vars_desc
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_board_env_vars_desc
+    :end-before: .. k3_rst_include_end_board_env_vars_desc
+
+Set the variables corresponding to this platform:
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_common_env_vars_defn
+    :end-before: .. k3_rst_include_end_common_env_vars_defn
+.. code-block:: bash
+
+ $ export UBOOT_CFG_CORTEXR=phycore_am62x_r5_defconfig
+ $ export UBOOT_CFG_CORTEXA=phycore_am62x_a53_defconfig
+ $ export TFA_BOARD=lite
+ $ # we don't use any extra TFA parameters
+ $ unset TFA_EXTRA_ARGS
+ $ export OPTEE_PLATFORM=k3-am62x
+ $ export OPTEE_EXTRA_ARGS="CFG_WITH_SOFTWARE_PRNG=y"
+
+.. include::  ../ti/am62x_sk.rst
+    :start-after: .. am62x_evm_rst_include_start_build_steps
+    :end-before: .. am62x_evm_rst_include_end_build_steps
+
+uSD Card creation
+-----------------
+
+Use fdisk to partition the uSD card. The layout should look similar to:
+
+.. code-block:: bash
+
+ $ sudo fdisk -l /dev/mmcblk0
+ Disk /dev/mmcblk0: 7.56 GiB, 8120172544 bytes, 15859712 sectors
+ Units: sectors of 1 * 512 = 512 bytes
+ Sector size (logical/physical): 512 bytes / 512 bytes
+ I/O size (minimum/optimal): 512 bytes / 512 bytes
+ Disklabel type: dos
+ Disk identifier: 0x6583d9a3
+
+ Device         Boot  Start     End Sectors   Size Id Type
+ /dev/mmcblk0p1 *      2048  264191  262144   128M  c W95 FAT32 (LBA)
+ /dev/mmcblk0p2      264192 1934953 1670762 815.8M 83 Linux
+
+
+Once partitioned, the boot partition has to be formatted with a FAT filesystem.
+Assuming the uSD card is `/dev/mmcblk0`:
+
+.. code-block:: bash
+
+ $ mkfs.vfat /dev/mmcblk0p1
+
+To boot from a micro SD card on a HSFS device simply copy the following
+artifacts to the FAT partition:
+
+* tiboot3.bin from R5 build as tiboot3.bin
+* tispl.bin_unsigned from Cortex-A build as tispl.bin
+* u-boot.img_unsigned from Cortex-A build as u-boot.img
+
+Boot
+----
+
+Put the uSD card in the slot on the board and apply power. Check the serial
+console for output.
+
+Flash to SPI NOR
+----------------
+
+Below commands can be used to flash the SPI NOR flash; assuming
+tiboot3.bin, tispl.bin and u-boot.img are stored on the uSD card.
+
+.. code-block:: bash
+
+  sf probe
+  fatload mmc 1 ${loadaddr} tiboot3.bin
+  sf update $loadaddr 0x0 $filesize
+  fatload mmc 1 ${loadaddr} tispl.bin
+  sf update $loadaddr 0x80000 $filesize
+  fatload mmc 1 ${loadaddr} u-boot.img
+  sf update $loadaddr 0x280000 $filesize
+
+
+Boot Modes
+----------
+
+The phyCORE-AM62x development kit supports booting from many different
+interfaces. By default, the development kit is set to boot from the micro-SD
+card. To change the boot device, DIP switches S5 and S6 can be used.
+Boot switches should be changed with power off.
+
+.. list-table:: Boot Modes
+   :widths: 16 16 16
+   :header-rows: 1
+
+   * - Switch Label
+     - SW5: 12345678
+     - SW6: 12345678
+
+   * - uSD
+     - 11000010
+     - 01000000
+
+   * - eMMC
+     - 11010010
+     - 00000000
+
+   * - OSPI
+     - 11010000
+     - 10000000
+
+   * - UART
+     - 11011100
+     - 00000000
+
+Further Information
+-------------------
+
+Please see :doc:`../ti/am62x_sk` chapter for further AM62 SoC related documentation
+and https://docs.phytec.com/phycore-am62x for vendor documentation.
diff --git a/doc/board/ti/k3.rst b/doc/board/ti/k3.rst
index a127215ce5..435c72a428 100644
--- a/doc/board/ti/k3.rst
+++ b/doc/board/ti/k3.rst
@@ -33,6 +33,7 @@ K3 Based SoCs
    am62ax_sk
    am62x_sk
    ../beagle/am62x_beagleplay
+   ../phytec/phycore-am62x
    ../toradex/verdin-am62
    am64x_evm
    am65x_evm
-- 
2.34.1

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