| .. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause |
| .. sectionauthor:: Jayesh Choudhary <j-choudhary@ti.com> |
| |
| J722S-EVM Platform |
| ================== |
| |
| The J722S is a family of application processors built for Automotive and |
| Linux Application development. J722S family of SoCs is a superset of the |
| AM62P SoC family and shares similar memory map, thus the nodes are being |
| reused from AM62P includes instead of duplicating the definitions. |
| |
| Some highlights of J722S SoC (in addition to AM62P SoC features) are: |
| |
| * Two Cortex-R5F for Functional Safety or general-purpose usage and |
| two C7x floating point vector DSP with Matrix Multiply Accelerator |
| for deep learning. |
| |
| * Vision Processing Accelerator (VPAC) with image signal processor |
| and Depth and Motion Processing Accelerator (DMPAC). |
| |
| * 7xUARTs, 3xSPI, 5xI2C, 2xUSB2, 2xCAN-FD, 3xMMC and SD, GPMC for |
| NAND/FPGA connection, OSPI memory controller, 5xMcASP for audio, |
| 4xCSI-RX for Camera, 1 PCIe Gen3 controller, USB3.0 eCAP/eQEP, |
| ePWM, among other peripherals. |
| |
| For those interested, more details about this SoC can be found in the |
| Technical Reference Manual here: https://www.ti.com/lit/zip/sprujb3 |
| |
| Boot Flow: |
| ---------- |
| |
| The bootflow is exactly the same as all SoCs in the am62xxx extended SoC |
| family. Below is the pictorial representation: |
| |
| .. 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=j722s_evm_r5_defconfig |
| $ export UBOOT_CFG_CORTEXA=j722s_evm_a53_defconfig |
| $ export TFA_BOARD=lite |
| $ export OPTEE_PLATFORM=k3-am62x |
| $ export OPTEE_EXTRA_ARGS="CFG_WITH_SOFTWARE_PRNG=y" |
| |
| .. j722s_evm_rst_include_start_build_steps |
| |
| 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 |
| .. j722s_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 (HS-FS, HS-SE) requires a different source for these files. |
| |
| - HS-FS |
| |
| * tiboot3-j722s-hs-fs-evm.bin from step 3.1 |
| * tispl.bin, u-boot.img from step 3.2 |
| |
| - HS-SE |
| |
| * tiboot3-j722s-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 |
| |
| A53 SPL DDR Memory Layout |
| ------------------------- |
| |
| .. j722s_evm_rst_include_start_ddr_mem_layout |
| |
| This provides an overview memory usage in A53 SPL stage. |
| |
| .. list-table:: |
| :widths: 16 16 16 |
| :header-rows: 1 |
| |
| * - Region |
| - Start Address |
| - End Address |
| |
| * - EMPTY |
| - 0x80000000 |
| - 0x80080000 |
| |
| * - TEXT BASE |
| - 0x80080000 |
| - 0x800d8000 |
| |
| * - EMPTY |
| - 0x800d8000 |
| - 0x80477660 |
| |
| * - STACK |
| - 0x80477660 |
| - 0x80477e60 |
| |
| * - GD |
| - 0x80477e60 |
| - 0x80478000 |
| |
| * - MALLOC |
| - 0x80478000 |
| - 0x80480000 |
| |
| * - EMPTY |
| - 0x80480000 |
| - 0x80a00000 |
| |
| * - BSS |
| - 0x80a00000 |
| - 0x80a80000 |
| |
| * - BLOBS |
| - 0x80a80000 |
| - 0x80d00400 |
| |
| * - EMPTY |
| - 0x80d00400 |
| - 0x81000000 |
| .. j722s_evm_rst_include_end_ddr_mem_layout |
| |
| 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 J722S-EVM |
| platform. More details can be found in the Technical Reference Manual: |
| https://www.ti.com/lit/zip/sprujb3 under the `Boot Mode Pins` section. |
| |
| .. note:: |
| |
| This device is very new. Currently only UART boot is available while |
| we continue to add support for the other bootmodes. |
| |
| .. list-table:: Boot Modes |
| :widths: 16 16 16 |
| :header-rows: 1 |
| |
| * - Switch Label |
| - SW3: 12345678 |
| - SW4: 12345678 |
| |
| * - SD |
| - 11000010 |
| - 01000000 |
| |
| * - OSPI |
| - 11001110 |
| - 00000000 |
| |
| * - EMMC |
| - 11010010 |
| - 00000000 |
| |
| * - UART |
| - 11011100 |
| - 00000000 |
| |
| * - USB DFU |
| - 11001010 |
| - 00000000 |
| |
| 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 after**: v0.12.0 |
| |
| While support for the entire K3 generation including the am62xxx |
| extended family was added before v0.12.0, the tcl scripts for the |
| am62px have been accepted and will be available in the next release of |
| OpenOCD. It may be necessary to build OpenOCD from source depending on |
| the version your distribution has packaged. |
| |
| .. 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_j722sevm.cfg |