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doc: ti: Add readme for AM62x SK

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Add info of boot flow and build steps for AM62x SK.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
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Vignesh Raghavendra 2022-05-25 13:38:50 +05:30 committed by Tom Rini
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.. 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 | |
| +-------------------+ |
+-----------------------+

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doc/board/ti/index.rst
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@ -8,3 +8,4 @@ Texas Instruments
am335x_evm
j721e_evm
am62x_sk