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232 lines
10 KiB
ReStructuredText
232 lines
10 KiB
ReStructuredText
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.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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.. sectionauthor:: Vignesh Raghavendra <vigneshr@ti.com>
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Texas Instruments AM62 Platforms
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================================
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Introduction:
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-------------
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The AM62 SoC family is the follow on AM335x built on the K3 Multicore
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SoC architecture platform, providing ultra-low-power modes, dual
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display, multi-sensor edge compute, security and other BOM-saving
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integrations. The AM62 SoC targets a broad market to enable
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applications such as Industrial HMI, PLC/CNC/Robot control, Medical
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Equipment, Building Automation, Appliances and more.
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Some highlights of this SoC are:
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* Quad-Cortex-A53s (running up to 1.4GHz) in a single cluster.
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Pin-to-pin compatible options for single and quad core are available.
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* Cortex-M4F for general-purpose or safety usage.
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* Dual display support, providing 24-bit RBG parallel interface and
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OLDI/LVDS-4 Lane x2, up to 200MHz pixel clock support for 2K display
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resolution.
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* Selectable GPU support, up to 8GFLOPS, providing better user experience
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in 3D graphic display case and Android.
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* PRU(Programmable Realtime Unit) support for customized programmable
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interfaces/IOs.
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* Integrated Giga-bit Ethernet switch supporting up to a total of two
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external ports (TSN capable).
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* 9xUARTs, 5xSPI, 6xI2C, 2xUSB2, 3xCAN-FD, 3x eMMC and SD, GPMC for
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NAND/FPGA connection, OSPI memory controller, 3xMcASP for audio,
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1x CSI-RX-4L for Camera, eCAP/eQEP, ePWM, among other peripherals.
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* Dedicated Centralized System Controller for Security, Power, and
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Resource Management.
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* Multiple low power modes support, ex: Deep sleep, Standby, MCU-only,
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enabling battery powered system design.
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More details can be found in the Technical Reference Manual:
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https://www.ti.com/lit/pdf/spruiv7
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Boot Flow:
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----------
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Below is the pictorial representation of boot flow:
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.. code-block:: text
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+------------------------------------------------------------------------+
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| TIFS | Main R5 | A53 |
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+------------------------------------------------------------------------+
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| +--------+ | | |
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| | Reset | | | |
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| +--------+ | | |
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| : | | |
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| +--------+ | +-----------+ | |
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| | *ROM* |----------|-->| Reset rls | | |
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| +--------+ | +-----------+ | |
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| | | | : | |
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| | ROM | | : | |
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| |services| | : | |
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| | | | +-------------+ | |
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| | | | | *R5 ROM* | | |
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| | | | +-------------+ | |
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| | |<---------|---|Load and auth| | |
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| | | | | tiboot3.bin | | |
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| +--------+ | +-------------+ | |
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| | |<---------|---| Load sysfw | | |
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| | | | | part to TIFS| | |
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| | | | | core | | |
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| | | | +-------------+ | |
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| | | | +-------------+ | |
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| | | | | *R5 SPL* | | |
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| | | | +-------------+ | |
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| | | | | DDR | | |
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| | | | | config | | |
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| | | | +-------------+ | |
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| | | | | Load | | |
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| | | | | tispl.bin | | |
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| | | | +-------------+ | |
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| | | | | Load R5 | | |
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| | | | | firmware | | |
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| | | | +-------------+ | |
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| | |<---------|---| Start A53 | | |
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| | | | | and jump to | | |
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| | | | | DM fw image | | |
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| | | | +-------------+ | |
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| | | | | +-----------+ |
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| | |----------|-----------------------|---->| Reset rls | |
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| | | | | +-----------+ |
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| | TIFS | | | : |
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| |Services| | | +-----------+ |
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| | |<---------|-----------------------|---->|*ATF/OPTEE*| |
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| | | | | +-----------+ |
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| | | | | : |
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| | | | | +-----------+ |
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| | |<---------|-----------------------|---->| *A53 SPL* | |
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| | | | | +-----------+ |
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| | | | | | Load | |
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| | | | | | u-boot.img| |
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| | | | | +-----------+ |
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| | | | | : |
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| | | | | +-----------+ |
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| | |<---------|-----------------------|---->| *U-Boot* | |
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| | | | | +-----------+ |
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| | | | | | prompt | |
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| | |----------|-----------------------|-----+-----------+-----|
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| +--------+ | | |
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+------------------------------------------------------------------------+
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- Here TIFS acts as master and provides all the critical services. R5/A53
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requests TIFS to get these services done as shown in the above diagram.
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Sources:
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--------
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1. SYSFW:
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Tree: git://git.ti.com/k3-image-gen/k3-image-gen.git
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Branch: master
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2. ATF:
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Tree: https://github.com/ARM-software/arm-trusted-firmware.git
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Branch: master
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3. OPTEE:
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Tree: https://github.com/OP-TEE/optee_os.git
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Branch: master
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4. U-Boot:
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Tree: https://source.denx.de/u-boot/u-boot
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Branch: master
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5. TI Linux Firmware:
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Tree: git://git.ti.com/processor-firmware/ti-linux-firmware.git
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Branch: ti-linux-firmware
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Build procedure:
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----------------
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1. ATF:
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.. code-block:: text
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$ make CROSS_COMPILE=aarch64-none-linux-gnu- ARCH=aarch64 PLAT=k3 TARGET_BOARD=lite SPD=opteed
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2. OPTEE:
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.. code-block:: text
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$ make PLATFORM=k3 CFG_ARM64_core=y CROSS_COMPILE=arm-none-linux-gnueabihf- CROSS_COMPILE64=aarch64-none-linux-gnu-
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3. U-Boot:
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* 3.1 R5:
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.. code-block:: text
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$ make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- am62x_evm_r5_defconfig O=/tmp/r5
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$ make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=/tmp/r5
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$ cd <k3-image-gen>
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$ make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- SOC=am62x SBL=/tmp/r5/spl/u-boot-spl.bin SYSFW_PATH=<path to ti-linux-firmware>/ti-sysfw/ti-fs-firmware-am62x-gp.bin
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Use the tiboot3.bin generated from last command
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* 3.2 A53:
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.. code-block:: text
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$ make ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- am62x_evm_a53_defconfig O=/tmp/a53
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$ make ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- ATF=<path to ATF dir>/build/k3/lite/release/bl31.bin TEE=<path to OPTEE OS dir>/out/arm-plat-k3/core/tee-pager_v2.bin DM=<path to ti-linux-firmware>/ti-dm/am62xx/ipc_echo_testb_mcu1_0_release_strip.xer5f O=/tmp/a53
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Target Images
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--------------
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Copy the below images to an SD card and boot:
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- tiboot3.bin from step 3.1
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- tispl.bin, u-boot.img from 3.2
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Image formats:
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--------------
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- tiboot3.bin:
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.. code-block:: text
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+-----------------------+
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| X.509 |
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| Certificate |
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| +-------------------+ |
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| | R5 | |
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| | u-boot-spl.bin | |
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| +-------------------+ |
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| |TIFS with board cfg| |
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| +-------------------+ |
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| | FIT header | |
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| | +---------------+ | |
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| | | DTB 1...N | | |
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| | +---------------+ | |
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| +-------------------+ |
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+-----------------------+
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- tispl.bin
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.. code-block:: text
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+-----------------------+
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| FIT HEADER |
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| +-------------------+ |
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| | A53 ATF | |
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| +-------------------+ |
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| | A53 OPTEE | |
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| +-------------------+ |
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| | R5 DM FW | |
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| +-------------------+ |
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| | A53 SPL | |
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| +-------------------+ |
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| | SPL DTB 1...N | |
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| +-------------------+ |
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+-----------------------+
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