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doc: board: ti: introduce am62px documentation
Introduce basic documentation for the am62p family of SoCs. Signed-off-by: Bryan Brattlof <bb@ti.com>
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Bryan Brattlof
Tom Rini
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doc/board/ti/am62px_sk.rst
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doc/board/ti/am62px_sk.rst
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.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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.. sectionauthor:: Bryan Brattlof <bb@ti.com>
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AM62Px Platforms
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================
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The AM62Px is an extension of the existing Sitara AM62x low-cost family
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of application processors built for Automotive and Linux Application
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development. Scalable Arm Cortex-A53 performance and embedded features,
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such as: multi high-definition display support, 3D-graphics
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acceleration, 4K video acceleration, and extensive peripherals make the
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AM62Px well-suited for a broad range of automation and industrial
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application, including automotive digital instrumentation, automotive
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displays, industrial HMI, and more.
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Some highlights of AM62P SoC are:
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* Quad-Cortex-A53s (running up to 1.4GHz) in a single cluster.
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Dual/Single core variants are provided in the same package to allow HW
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compatible designs.
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* One Device manager Cortex-R5F for system power and resource
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management, and one Cortex-R5F for Functional Safety or
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general-purpose usage.
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* One 3D GPU up to 50 GLFOPS
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* H.264/H.265 Video Encode/Decode.
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* Display support: 3x display support over OLDI/LVDS (1x OLDI-DL, 1x or
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2x OLDI-SL), DSI, or DPI. Up to 3840x1080 @ 60fps resolution
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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, 3xMMC and SD, GPMC for
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NAND/FPGA connection, OSPI memory controller, 3xMcASP for audio,
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1xCSI-RX-4L for Camera, eCAP/eQEP, ePWM, among other peripherals.
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* Dedicated Centralized Hardware Security Module with support for secure
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boot, debug security and crypto acceleration and trusted execution
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environment.
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* One 32-bit DDR Subsystem that supports LPDDR4, DDR4 memory types.
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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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For those interested, more details about this SoC can be found in the
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Technical Reference Manual here: https://www.ti.com/lit/pdf/spruj83
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Boot Flow:
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----------
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The bootflow is exactly the same as all SoCs in the am62xxx extended SoC
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family. Below is the pictorial representation:
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.. image:: img/boot_diagram_k3_current.svg
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:alt: Boot flow diagram
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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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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_boot_sources
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:end-before: .. k3_rst_include_end_boot_sources
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Build procedure:
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----------------
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0. Setup the environment variables:
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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_common_env_vars_desc
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:end-before: .. k3_rst_include_end_common_env_vars_desc
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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_board_env_vars_desc
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:end-before: .. k3_rst_include_end_board_env_vars_desc
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Set the variables corresponding to this platform:
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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_common_env_vars_defn
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:end-before: .. k3_rst_include_end_common_env_vars_defn
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.. code-block:: bash
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$ export UBOOT_CFG_CORTEXR=am62px_evm_r5_defconfig
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$ export UBOOT_CFG_CORTEXA=am62px_evm_a53_defconfig
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$ export TFA_BOARD=lite
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$ # we dont use any extra TFA parameters
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$ unset TFA_EXTRA_ARGS
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$ export OPTEE_PLATFORM=k3-am62x
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$ export OPTEE_EXTRA_ARGS="CFG_WITH_SOFTWARE_PRNG=y"
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.. am62px_evm_rst_include_start_build_steps
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1. Trusted Firmware-A:
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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_build_steps_tfa
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:end-before: .. k3_rst_include_end_build_steps_tfa
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2. OP-TEE:
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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_build_steps_optee
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:end-before: .. k3_rst_include_end_build_steps_optee
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3. U-Boot:
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* 3.1 R5:
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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_build_steps_spl_r5
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:end-before: .. k3_rst_include_end_build_steps_spl_r5
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* 3.2 A53:
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.. include:: ../ti/k3.rst
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:start-after: .. k3_rst_include_start_build_steps_uboot
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:end-before: .. k3_rst_include_end_build_steps_uboot
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.. am62px_evm_rst_include_end_build_steps
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Target Images
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--------------
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In order to boot we need tiboot3.bin, tispl.bin and u-boot.img. Each SoC
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variant (HS-FS, HS-SE) requires a different source for these files.
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- HS-FS
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* tiboot3-am62px-hs-fs-evm.bin from step 3.1
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* tispl.bin, u-boot.img from step 3.2
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- HS-SE
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* tiboot3-am62px-hs-evm.bin from step 3.1
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* tispl.bin, u-boot.img from step 3.2
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Image formats:
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--------------
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- tiboot3.bin
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.. image:: img/multi_cert_tiboot3.bin.svg
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:alt: tiboot3.bin image format
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- tispl.bin
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.. image:: img/dm_tispl.bin.svg
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:alt: tispl.bin image format
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A53 SPL DDR Memory Layout
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-------------------------
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.. am62px_evm_rst_include_start_ddr_mem_layout
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This provides an overview memory usage in A53 SPL stage.
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.. list-table::
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:widths: 16 16 16
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:header-rows: 1
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* - Region
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- Start Address
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- End Address
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* - EMPTY
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- 0x80000000
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- 0x80080000
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* - TEXT BASE
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- 0x80080000
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- 0x800d8000
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* - EMPTY
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- 0x800d8000
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- 0x80200000
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* - BMP IMAGE
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- 0x80200000
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- 0x80b77660
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* - STACK
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- 0x80b77660
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- 0x80b77e60
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* - GD
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- 0x80b77e60
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- 0x80b78000
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* - MALLOC
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- 0x80b78000
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- 0x80b80000
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* - EMPTY
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- 0x80b80000
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- 0x80c80000
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* - BSS
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- 0x80c80000
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- 0x80d00000
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* - BLOBS
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- 0x80d00000
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- 0x80d00400
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* - EMPTY
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- 0x80d00400
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- 0x81000000
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.. am62px_evm_rst_include_end_ddr_mem_layout
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Switch Setting for Boot Mode
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----------------------------
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Boot Mode pins provide means to select the boot mode and options before the
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device is powered up. After every POR, they are the main source to populate
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the Boot Parameter Tables.
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The following table shows some common boot modes used on AM62Px
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platforms. More details can be found in the Technical Reference Manual:
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https://www.ti.com/lit/pdf/spruj83 under the `Boot Mode Pins` section.
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.. note::
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This device is very new. Currently only UART boot is available while
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we continue to add support for the other bootmodes.
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.. list-table:: Boot Modes
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:widths: 16 16 16
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:header-rows: 1
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* - Switch Label
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- SW2: 12345678
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- SW3: 12345678
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* - SD
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- 01000000
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- 11000010
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* - OSPI
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- 00000000
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- 11001110
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* - EMMC
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- 00000000
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- 11010010
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* - UART
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- 00000000
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- 11011100
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* - USB DFU
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- 00000000
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- 11001010
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For SW2 and SW1, the switch state in the "ON" position = 1.
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Debugging U-Boot
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----------------
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See :ref:`Common Debugging environment - OpenOCD<k3_rst_refer_openocd>`: for
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detailed setup information.
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.. warning::
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**OpenOCD support after**: v0.12.0
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While support for the entire K3 generation including the am62xxx
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extended family was added before v0.12.0, the tcl scripts for the
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am62px have been accepted and will be available in the next release of
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OpenOCD. It may be necessary to build OpenOCD from source depending on
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the version your distribution has packaged.
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.. include:: k3.rst
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:start-after: .. k3_rst_include_start_openocd_connect_XDS110
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:end-before: .. k3_rst_include_end_openocd_connect_XDS110
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To start OpenOCD and connect to the board
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.. code-block:: bash
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openocd -f board/ti_am62pevm.cfg
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@ -35,6 +35,7 @@ K3 Based SoCs
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../beagle/am62x_beagleplay
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../phytec/phycore-am62x
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../toradex/verdin-am62
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am62px_sk
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am64x_evm
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am65x_evm
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j7200_evm
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