The documentation is based off J7200 documentation tailored for J721S2. TRM for J721S2: https://www.ti.com/lit/pdf/spruj28 Product Page: https://www.ti.com/product/TDA4AL-Q1
Reviewed-by: Neha Malcom Francis <n-fran...@ti.com> Signed-off-by: Manorit Chawdhry <m-chawd...@ti.com> --- doc/board/ti/j721s2_evm.rst | 298 ++++++++++++++++++++++++++++++++++++++++++++ doc/board/ti/k3.rst | 1 + 2 files changed, 299 insertions(+) diff --git a/doc/board/ti/j721s2_evm.rst b/doc/board/ti/j721s2_evm.rst new file mode 100644 index 000000000000..6b091ad37578 --- /dev/null +++ b/doc/board/ti/j721s2_evm.rst @@ -0,0 +1,298 @@ +.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause +.. sectionauthor:: Manorit Chawdhry <m-chawd...@ti.com> + +J721S2 and AM68 Platforms +========================= + +Introduction: +------------- +The J721S2 family of SoCs are part of K3 Multicore SoC architecture platform +targeting automotive applications. They are designed as a low power, high +performance and highly integrated device architecture, adding significant +enhancement on processing power, graphics capability, video and imaging +processing, virtualization and coherent memory support. + +The AM68 Starter Kit/Evaluation Module (EVM) is based on the J721S2 family +of SoCs. They are designed for machine vision, traffic monitoring, retail +automation, and factory automation. + +The device is partitioned into three functional domains, each containing +specific processing cores and peripherals: + +1. Wake-up (WKUP) domain: + * ARM Cortex-M4F processor, runs TI Foundational Security (TIFS) + +2. Microcontroller (MCU) domain: + * Dual core ARM Cortex-R5F processor, runs device management + and SoC early boot + +3. MAIN domain: + * Dual core 64-bit ARM Cortex-A72, runs HLOS + +More info can be found in TRM: https://www.ti.com/lit/pdf/spruj28 + +Platform information: + +* https://www.ti.com/tool/J721S2XSOMXEVM +* https://www.ti.com/tool/SK-AM68 + +Boot Flow: +---------- +Below is the pictorial representation of boot flow: + +.. image:: img/boot_diagram_k3_current.svg + +- On this platform, "TI Foundational Security" (TIFS) functions as the + security enclave master while "Device Manager" (DM), also known as the + "TISCI server" in TI terminology, offers all the essential services. + +- As illustrated in the diagram above, R5 SPL manages power and clock + services independently before handing over control to "DM". The A72 or + the C7x (Aux core) software components request TIFS/DM to handle + security or device management services. + +Sources: +-------- + +.. include:: 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:: k3.rst + :start-after: .. k3_rst_include_start_common_env_vars_desc + :end-before: .. k3_rst_include_end_common_env_vars_desc + +.. include:: 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:: 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=j721s2_evm_r5_defconfig + $ export UBOOT_CFG_CORTEXA=j721s2_evm_a72_defconfig + $ export TFA_BOARD=generic + $ export TFA_EXTRA_ARGS="K3_USART=0x8" + $ # The following is not a typo, j784s4 is the OP-TEE platform for j721s2 + $ export OPTEE_PLATFORM=k3-j784s4 + $ export OPTEE_EXTRA_ARGS="CFG_CONSOLE_UART=0x8" + +.. j721s2_evm_rst_include_start_build_steps + +1. Trusted Firmware-A: + +.. include:: k3.rst + :start-after: .. k3_rst_include_start_build_steps_tfa + :end-before: .. k3_rst_include_end_build_steps_tfa + + +2. OP-TEE: + +.. include:: k3.rst + :start-after: .. k3_rst_include_start_build_steps_optee + :end-before: .. k3_rst_include_end_build_steps_optee + +3. U-Boot: + +.. _j721s2_evm_rst_u_boot_r5: + +* 3.1 R5: + +.. include:: k3.rst + :start-after: .. k3_rst_include_start_build_steps_spl_r5 + :end-before: .. k3_rst_include_end_build_steps_spl_r5 + +.. _j721s2_evm_rst_u_boot_a72: + +* 3.2 A72: + +.. include:: k3.rst + :start-after: .. k3_rst_include_start_build_steps_uboot + :end-before: .. k3_rst_include_end_build_steps_uboot +.. j721s2_evm_rst_include_end_build_steps + +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-j721s2-gp-evm.bin from :ref:`step 3.1 <j721s2_evm_rst_u_boot_r5>` + * tispl.bin_unsigned, u-boot.img_unsigned from :ref:`step 3.2 <j721s2_evm_rst_u_boot_a72>` + + - HS-FS + + * tiboot3-j721s2-hs-fs-evm.bin from :ref:`step 3.1 <j721s2_evm_rst_u_boot_r5>` + * tispl.bin, u-boot.img from :ref:`step 3.2 <j721s2_evm_rst_u_boot_a72>` + + - HS-SE + + * tiboot3-j721s2-hs-evm.bin from :ref:`step 3.1 <j721s2_evm_rst_u_boot_r5>` + * tispl.bin, u-boot.img from :ref:`step 3.2 <j721s2_evm_rst_u_boot_a72>` + +Image formats: +-------------- + +- tiboot3.bin + +.. image:: img/multi_cert_tiboot3.bin.svg + +- tispl.bin + +.. image:: img/dm_tispl.bin.svg + +R5 Memory Map: +-------------- + +.. list-table:: + :widths: 16 16 16 + :header-rows: 1 + + * - Region + - Start Address + - End Address + + * - SPL + - 0x41c00000 + - 0x41c40000 + + * - EMPTY + - 0x41c40000 + - 0x41c61f20 + + * - STACK + - 0x41c65f20 + - 0x41c61f20 + + * - Global data + - 0x41c65f20 + - 0x41c66000 + + * - Heap + - 0x41c66000 + - 0x41c76000 + + * - BSS + - 0x41c76000 + - 0x41c80000 + + * - DM DATA + - 0x41c80000 + - 0x41c84130 + + * - EMPTY + - 0x41c84130 + - 0x41cff9fc + + * - MCU Scratchpad + - 0x41cff9fc + - 0x41cffbfc + + * - ROM DATA + - 0x41cffbfc + - 0x41cfffff + +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. + +Boot Mode Pins for J721S2 +^^^^^^^^^^^^^^^^^^^^^^^^^ + +The following table shows some common boot modes used on J721S2 platform. +More details can be found in the Technical Reference Manual: +https://www.ti.com/lit/pdf/spruj28 under the `Boot Mode Pins` section. + +.. list-table:: Boot Modes + :widths: 16 16 16 + :header-rows: 1 + + * - Switch Label + - SW9: 12345678 + - SW8: 12345678 + + * - SD + - 00000000 + - 10000010 + + * - EMMC + - 01000000 + - 10000000 + + * - OSPI + - 01000000 + - 00000110 + + * - UART + - 01110000 + - 00000000 + + * - USB DFU + - 00100000 + - 10000000 + +For SW8 and SW9, the switch state in the "ON" position = 1. + +Boot Mode Pins for AM68 +^^^^^^^^^^^^^^^^^^^^^^^ + +The following table shows some common boot modes used on AM68-SK platform. +More details can be found in the User Guide for AM68-SK: +https://www.ti.com/pdf/spruj68 under the `Bootmode Settings` section. + +.. list-table:: Boot Modes + :widths: 16 16 + :header-rows: 1 + + * - Switch Label + - SW1: 1234 + + * - SD + - 0000 + + * - xSPI + - 0010 + + * - UART + - 1010 + + * - Ethernet + - 0100 + +For 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**: v0.12.0 + + If the default package version of OpenOCD in your development + environment's distribution needs to be updated, it might be necessary to + build OpenOCD from the source. + +.. 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_j721s2evm.cfg diff --git a/doc/board/ti/k3.rst b/doc/board/ti/k3.rst index 5f9bd4dfcbe9..423d55526dc5 100644 --- a/doc/board/ti/k3.rst +++ b/doc/board/ti/k3.rst @@ -36,6 +36,7 @@ K3 Based SoCs am65x_evm j7200_evm j721e_evm + j721s2_evm Boot Flow Overview ------------------ -- 2.41.0
