--- /dev/null
+.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+.. sectionauthor:: Vignesh Raghavendra <vigneshr@ti.com>
+
+Texas Instruments 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
+
+Boot Flow:
+----------
+Below is the pictorial representation of boot flow:
+
+.. code-block:: text
+
+ +------------------------------------------------------------------------+
+ | TIFS | Main R5 | A53 |
+ +------------------------------------------------------------------------+
+ | +--------+ | | |
+ | | Reset | | | |
+ | +--------+ | | |
+ | : | | |
+ | +--------+ | +-----------+ | |
+ | | *ROM* |----------|-->| Reset rls | | |
+ | +--------+ | +-----------+ | |
+ | | | | : | |
+ | | ROM | | : | |
+ | |services| | : | |
+ | | | | +-------------+ | |
+ | | | | | *R5 ROM* | | |
+ | | | | +-------------+ | |
+ | | |<---------|---|Load and auth| | |
+ | | | | | tiboot3.bin | | |
+ | +--------+ | +-------------+ | |
+ | | |<---------|---| Load sysfw | | |
+ | | | | | part to TIFS| | |
+ | | | | | core | | |
+ | | | | +-------------+ | |
+ | | | | : | |
+ | | | | : | |
+ | | | | : | |
+ | | | | +-------------+ | |
+ | | | | | *R5 SPL* | | |
+ | | | | +-------------+ | |
+ | | | | | DDR | | |
+ | | | | | config | | |
+ | | | | +-------------+ | |
+ | | | | | Load | | |
+ | | | | | tispl.bin | | |
+ | | | | +-------------+ | |
+ | | | | | Load R5 | | |
+ | | | | | firmware | | |
+ | | | | +-------------+ | |
+ | | |<---------|---| Start A53 | | |
+ | | | | | and jump to | | |
+ | | | | | DM fw image | | |
+ | | | | +-------------+ | |
+ | | | | | +-----------+ |
+ | | |----------|-----------------------|---->| Reset rls | |
+ | | | | | +-----------+ |
+ | | TIFS | | | : |
+ | |Services| | | +-----------+ |
+ | | |<---------|-----------------------|---->|*ATF/OPTEE*| |
+ | | | | | +-----------+ |
+ | | | | | : |
+ | | | | | +-----------+ |
+ | | |<---------|-----------------------|---->| *A53 SPL* | |
+ | | | | | +-----------+ |
+ | | | | | | Load | |
+ | | | | | | u-boot.img| |
+ | | | | | +-----------+ |
+ | | | | | : |
+ | | | | | +-----------+ |
+ | | |<---------|-----------------------|---->| *U-Boot* | |
+ | | | | | +-----------+ |
+ | | | | | | prompt | |
+ | | |----------|-----------------------|-----+-----------+-----|
+ | +--------+ | | |
+ | | | |
+ +------------------------------------------------------------------------+
+
+- 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:
+--------
+1. SYSFW:
+ Tree: git://git.ti.com/k3-image-gen/k3-image-gen.git
+ Branch: master
+
+2. ATF:
+ Tree: https://github.com/ARM-software/arm-trusted-firmware.git
+ Branch: master
+
+3. OPTEE:
+ Tree: https://github.com/OP-TEE/optee_os.git
+ Branch: master
+
+4. U-Boot:
+ Tree: https://source.denx.de/u-boot/u-boot
+ Branch: master
+
+5. TI Linux Firmware:
+ Tree: git://git.ti.com/processor-firmware/ti-linux-firmware.git
+ Branch: ti-linux-firmware
+
+Build procedure:
+----------------
+1. ATF:
+
+.. code-block:: text
+
+ $ make CROSS_COMPILE=aarch64-none-linux-gnu- ARCH=aarch64 PLAT=k3 TARGET_BOARD=lite SPD=opteed
+
+2. OPTEE:
+
+.. code-block:: text
+
+ $ make PLATFORM=k3 CFG_ARM64_core=y CROSS_COMPILE=arm-none-linux-gnueabihf- CROSS_COMPILE64=aarch64-none-linux-gnu-
+
+3. U-Boot:
+
+* 3.1 R5:
+
+.. code-block:: text
+
+ $ make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- am62x_evm_r5_defconfig O=/tmp/r5
+ $ make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=/tmp/r5
+ $ cd <k3-image-gen>
+ $ 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
+
+Use the tiboot3.bin generated from last command
+
+* 3.2 A53:
+
+.. code-block:: text
+
+ $ make ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- am62x_evm_a53_defconfig O=/tmp/a53
+ $ 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
+
+Target Images
+--------------
+Copy the below images to an SD card and boot:
+ - tiboot3.bin from step 3.1
+ - tispl.bin, u-boot.img from 3.2
+
+Image formats:
+--------------
+
+- tiboot3.bin:
+
+.. code-block:: text
+
+ +-----------------------+
+ | X.509 |
+ | Certificate |
+ | +-------------------+ |
+ | | | |
+ | | R5 | |
+ | | u-boot-spl.bin | |
+ | | | |
+ | +-------------------+ |
+ | | | |
+ | |TIFS with board cfg| |
+ | | | |
+ | +-------------------+ |
+ | | | |
+ | | | |
+ | | FIT header | |
+ | | +---------------+ | |
+ | | | | | |
+ | | | DTB 1...N | | |
+ | | +---------------+ | |
+ | +-------------------+ |
+ +-----------------------+
+
+- tispl.bin
+
+.. code-block:: text
+
+ +-----------------------+
+ | |
+ | FIT HEADER |
+ | +-------------------+ |
+ | | | |
+ | | A53 ATF | |
+ | +-------------------+ |
+ | | | |
+ | | A53 OPTEE | |
+ | +-------------------+ |
+ | | | |
+ | | R5 DM FW | |
+ | +-------------------+ |
+ | | | |
+ | | A53 SPL | |
+ | +-------------------+ |
+ | | | |
+ | | SPL DTB 1...N | |
+ | +-------------------+ |
+ +-----------------------+
projects / u-boot.git / commitdiff
