From: Jai Luthra j-luthra@ti.com
Add generic boot-flow diagrams, and SoC-specific info around build steps.
Signed-off-by: Jai Luthra j-luthra@ti.com Signed-off-by: Nishanth Menon nm@ti.com --- doc/board/ti/am62ax_sk.rst | 213 +++++++++++++++++++++++++++++++++++++ doc/board/ti/k3.rst | 1 + 2 files changed, 214 insertions(+) create mode 100644 doc/board/ti/am62ax_sk.rst
diff --git a/doc/board/ti/am62ax_sk.rst b/doc/board/ti/am62ax_sk.rst new file mode 100644 index 000000000000..60726b6652ce --- /dev/null +++ b/doc/board/ti/am62ax_sk.rst @@ -0,0 +1,213 @@ +.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause +.. sectionauthor:: Jai Luthra j-luthra@ti.com + +AM62A Platforms +=============== + +Introduction: +------------- +The AM62A SoC family is built on the K3 Multicore SoC architecture platform, +providing a deep learning accelerator, multi-camera support with ISP, video +transcoder and other BOM-saving integrations. +The AM62A SoC enables cost-sensitive automotive applications including driver +and in-cabin monitoring systems, next generation of eMirror system, as well as +a broad set of industrial applications in Factory Automation, Building +Automation, Robotics and more. + +Some highlights of this SoC are: + +* Quad-Cortex-A53s (running up to 1.4GHz) in a single cluster. +* Cortex-R5F for general-purpose or safety usage. +* Deep Learning Accelerator with Single-core C7x Vector DSP with MMA (up to + 1.0GHz). +* Vision Processing Accelerator (VPAC) with a 315MPixel/s ISP (up to 5MP @ + 60fps) supporting 16-bit RAW input with RGB-IR separation. +* 4K Video encoder and decoder for HEVC (Level 5.1 High-tier) and H.264 (Level + 5.2) supporting upto 240MPixels/s and MJPEG encoder at 416MPixels/s +* Single display with 24-bit RGB parallel (DPI) interface supporting upto + 165Mhz pixel clock for 2K resolution. +* Integrated Giga-bit Ethernet switch supporting up to a total of two + external ports (TSN capable). +* 9xUARTs, 5xSPI, 6xI2C, 2xUSB2, 3xCAN-FD, 3x eMMC and SD, GPMC for + NAND/FPGA connection, OSPI memory controller, 3xMcASP for audio, + 1x CSI-RX-4L for Camera, eCAP/eQEP, ePWM, among other peripherals. +* Dedicated Centralized System Controller for Security, Power, and + Resource Management. +* Multiple low power modes support, ex: Deep sleep, Standby, MCU-only, + enabling battery powered system design. + +More details can be found in the Technical Reference Manual: +https://www.ti.com/lit/pdf/spruj16 + +Platform information: + +* https://www.ti.com/tool/SK-AM62A-LP + +Boot Flow: +---------- +Below is the pictorial representation of boot flow: + +.. image:: img/boot_diagram_k3_current.svg + :alt: Boot flow diagram + +- Here TIFS acts as master and provides all the critical services. R5/A53 + requests TIFS to get these services done as shown in the above diagram. + +Sources: +-------- + +.. include:: ../ti/k3.rst + :start-after: .. k3_rst_include_start_boot_sources + :end-before: .. k3_rst_include_end_boot_sources + +Build procedure: +---------------- +0. 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=am62ax_evm_r5_defconfig + $ export UBOOT_CFG_CORTEXA=am62ax_evm_a53_defconfig + $ export TFA_BOARD=lite + $ # we dont use any extra TFA parameters + $ unset TFA_EXTRA_ARGS + $ export OPTEE_PLATFORM=k3-am62ax + $ # we dont use any extra OPTEE parameters + $ unset OPTEE_EXTRA_ARGS + +1. Trusted Firmware-A: + +.. include:: ../ti/k3.rst + :start-after: .. k3_rst_include_start_build_steps_tfa + :end-before: .. k3_rst_include_end_build_steps_tfa + +2. OP-TEE: + +.. include:: ../ti/k3.rst + :start-after: .. k3_rst_include_start_build_steps_optee + :end-before: .. k3_rst_include_end_build_steps_optee + +3. U-Boot: + +* 3.1 R5: + +.. include:: ../ti/k3.rst + :start-after: .. k3_rst_include_start_build_steps_spl_r5 + :end-before: .. k3_rst_include_end_build_steps_spl_r5 + +* 3.2 A53: + +.. include:: ../ti/k3.rst + :start-after: .. k3_rst_include_start_build_steps_uboot + :end-before: .. k3_rst_include_end_build_steps_uboot + +Target Images +-------------- +In order to boot we need tiboot3.bin, tispl.bin and u-boot.img. Each SoC +variant (GP, HS-FS, HS-SE) requires a different source for these files. + + - GP + + * tiboot3-am62ax-gp-evm.bin from step 3.1 + * tispl.bin_unsigned, u-boot.img_unsigned from step 3.2 + + - HS-FS + + * tiboot3-am62ax-hs-fs-evm.bin from step 3.1 + * tispl.bin, u-boot.img from step 3.2 + + - HS-SE + + * tiboot3-am62ax-hs-evm.bin from step 3.1 + * tispl.bin, u-boot.img from step 3.2 + +Image formats: +-------------- + +- tiboot3.bin + +.. image:: img/multi_cert_tiboot3.bin.svg + :alt: tiboot3.bin image format + +- tispl.bin + +.. image:: img/dm_tispl.bin.svg + :alt: tispl.bin image format + +Switch Setting for Boot Mode +---------------------------- + +Boot Mode pins provide means to select the boot mode and options before the +device is powered up. After every POR, they are the main source to populate +the Boot Parameter Tables. + +The following table shows some common boot modes used on AM62 platform. More +details can be found in the Technical Reference Manual: +https://www.ti.com/lit/pdf/spruj16 under the `Boot Mode Pins` section. + +.. list-table:: Boot Modes + :widths: 16 16 16 + :header-rows: 1 + + * - Switch Label + - SW2: 12345678 + - SW3: 12345678 + + * - SD + - 01000000 + - 11000010 + + * - OSPI + - 00000000 + - 11001110 + + * - EMMC + - 00000000 + - 11010010 + + * - UART + - 00000000 + - 11011100 + + * - USB DFU + - 00000000 + - 11001010 + +For SW2 and SW1, the switch state in the "ON" position = 1. + +Debugging U-Boot +---------------- + +See :ref:`Common Debugging environment - OpenOCD<k3_rst_refer_openocd>`: for +detailed setup information. + +.. warning:: + + **OpenOCD support since**: August 2023 (git master) + + Until the next stable release of OpenOCD is available in your development + environment's distribution, it might be necessary to build OpenOCD `from the + source https://github.com/openocd-org/openocd`_. + +.. include:: k3.rst + :start-after: .. k3_rst_include_start_openocd_connect_XDS110 + :end-before: .. k3_rst_include_end_openocd_connect_XDS110 + +To start OpenOCD and connect to the board + +.. code-block:: bash + + openocd -f board/ti_am62a7evm.cfg diff --git a/doc/board/ti/k3.rst b/doc/board/ti/k3.rst index 89d70db88647..b8318f0994fe 100644 --- a/doc/board/ti/k3.rst +++ b/doc/board/ti/k3.rst @@ -30,6 +30,7 @@ K3 Based SoCs .. toctree:: :maxdepth: 1
+ am62ax_sk am62x_beagleplay am62x_sk ../toradex/verdin-am62