| .. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause |
| .. sectionauthor:: Vignesh Raghavendra <vigneshr@ti.com> |
| |
| AM62 Platforms |
| ============== |
| |
| Introduction: |
| ------------- |
| The AM62 SoC family is the follow on AM335x built on the K3 Multicore |
| SoC architecture platform, providing ultra-low-power modes, dual |
| display, multi-sensor edge compute, security and other BOM-saving |
| integrations. The AM62 SoC targets a broad market to enable |
| applications such as Industrial HMI, PLC/CNC/Robot control, Medical |
| Equipment, Building Automation, Appliances and more. |
| |
| Some highlights of this SoC are: |
| |
| * Quad-Cortex-A53s (running up to 1.4GHz) in a single cluster. |
| Pin-to-pin compatible options for single and quad core are available. |
| * Cortex-M4F for general-purpose or safety usage. |
| * Dual display support, providing 24-bit RBG parallel interface and |
| OLDI/LVDS-4 Lane x2, up to 200MHz pixel clock support for 2K display |
| resolution. |
| * Selectable GPU support, up to 8GFLOPS, providing better user experience |
| in 3D graphic display case and Android. |
| * PRU(Programmable Realtime Unit) support for customized programmable |
| interfaces/IOs. |
| * 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/spruiv7 |
| |
| Platform information: |
| |
| * https://www.ti.com/tool/SK-AM62B |
| |
| 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 |
| .. prompt:: bash $ |
| |
| export UBOOT_CFG_CORTEXR=am62x_evm_r5_defconfig |
| export UBOOT_CFG_CORTEXA=am62x_evm_a53_defconfig |
| export TFA_BOARD=lite |
| # we dont use any extra TFA parameters |
| unset TFA_EXTRA_ARGS |
| export OPTEE_PLATFORM=k3-am62x |
| export OPTEE_EXTRA_ARGS="CFG_WITH_SOFTWARE_PRNG=y" |
| |
| .. am62x_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 |
| .. am62x_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-am62x-gp-evm.bin from step 3.1 |
| * tispl.bin_unsigned, u-boot.img_unsigned from step 3.2 |
| |
| - HS-FS |
| |
| * tiboot3-am62x-hs-fs-evm.bin from step 3.1 |
| * tispl.bin, u-boot.img from step 3.2 |
| |
| - HS-SE |
| |
| * tiboot3-am62x-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 |
| ------------------------- |
| |
| .. am62x_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 |
| - 0x80200000 |
| |
| * - BMP IMAGE |
| - 0x80200000 |
| - 0x80b77660 |
| |
| * - STACK |
| - 0x80b77660 |
| - 0x80b77e60 |
| |
| * - GD |
| - 0x80b77e60 |
| - 0x80b78000 |
| |
| * - MALLOC |
| - 0x80b78000 |
| - 0x80b80000 |
| |
| * - EMPTY |
| - 0x80b80000 |
| - 0x80c80000 |
| |
| * - BSS |
| - 0x80c80000 |
| - 0x80d00000 |
| |
| * - BLOBS |
| - 0x80d00000 |
| - 0x80d00400 |
| |
| * - EMPTY |
| - 0x80d00400 |
| - 0x81000000 |
| .. am62x_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 AM62 platform. More |
| details can be found in the Technical Reference Manual: |
| https://www.ti.com/lit/pdf/spruiv7 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**: 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 |
| |
| .. prompt:: bash $ |
| |
| openocd -f board/ti_am625evm.cfg |