[PATCH v4 3/4] doc: board: ti: am64: Add boot flow diagram

Roger Quadros rogerq at kernel.org
Thu Aug 3 18:06:49 CEST 2023


Add boot flow diagram for AM64 SoC.

Suggested-by: Nishanth Menon <nm at ti.com>
Signed-off-by: Roger Quadros <rogerq at kernel.org>
---
 doc/board/ti/am64x_evm.rst             |  197 +++
 doc/board/ti/img/boot_diagram_am64.svg | 1702 ++++++++++++++++++++++++
 doc/board/ti/k3.rst                    |    1 +
 3 files changed, 1900 insertions(+)
 create mode 100644 doc/board/ti/am64x_evm.rst
 create mode 100644 doc/board/ti/img/boot_diagram_am64.svg

diff --git a/doc/board/ti/am64x_evm.rst b/doc/board/ti/am64x_evm.rst
new file mode 100644
index 0000000000..f378cbf12b
--- /dev/null
+++ b/doc/board/ti/am64x_evm.rst
@@ -0,0 +1,197 @@
+.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+.. sectionauthor:: Nishanth Menon <nm at ti.com>
+
+AM64 Platforms
+==============
+
+Introduction:
+-------------
+The AM642 SoC belongs to the K3 Multicore SoC architecture platform,
+providing advanced system integration to enable applications such as
+Motor Drives, PLC, Remote IO and IoT Gateways.
+
+Some highlights of this SoC are:
+
+* Dual Cortex-A53s in a single cluster, two clusters of dual Cortex-R5F
+  MCUs, and a single Cortex-M4F.
+* Two Gigabit Industrial Communication Subsystems (ICSSG).
+* Integrated Ethernet switch supporting up to a total of two external
+  ports.
+* PCIe-GEN2x1L, USB3/USB2, 2xCAN-FD, eMMC and SD, UFS, OSPI memory
+  controller, QSPI, I2C, eCAP/eQEP, ePWM, ADC, among other
+  peripherals.
+* Centralized System Controller for Security, Power, and Resource
+  Management (DMSC).
+
+More details can be found in the Technical Reference Manual:
+ https://www.ti.com/lit/pdf/spruim2
+
+Platform information:
+
+* AM64-EVM: https://www.ti.com/tool/TMDS64EVM
+* AM64-SK: https://www.ti.com/tool/SK-AM64B
+
+Boot Flow:
+----------
+Below is the pictorial representation of boot flow:
+
+.. image:: img/boot_diagram_am64.svg
+
+- 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::  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::  k3.rst
+    :start-after: .. k3_rst_include_start_common_env_vars_desc
+    :end-before: .. k3_rst_include_end_common_env_vars_desc
+
+.. include::  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::  k3.rst
+    :start-after: .. k3_rst_include_start_common_env_vars_defn
+    :end-before: .. k3_rst_include_end_common_env_vars_defn
+.. code-block:: bash
+
+ $ export UBOOT_CFG_CORTEXR=am64x_evm_r5_defconfig
+ $ export UBOOT_CFG_CORTEXA=am64x_evm_a53_defconfig
+ $ export TFA_BOARD=lite
+ $ # we dont use any extra TFA parameters
+ $ unset TFA_EXTRA_ARGS
+ $ export OPTEE_PLATFORM=k3-am64x
+ $ # we dont use any extra TFA parameters
+ $ unset OPTEE_EXTRA_ARGS
+
+.. am64x_evm_rst_include_start_build_steps
+
+1. Trusted Firmware-A:
+
+.. include::  k3.rst
+    :start-after: .. k3_rst_include_start_build_steps_tfa
+    :end-before: .. k3_rst_include_end_build_steps_tfa
+
+
+2. OP-TEE:
+
+.. include::  k3.rst
+    :start-after: .. k3_rst_include_start_build_steps_optee
+    :end-before: .. k3_rst_include_end_build_steps_optee
+
+3. U-Boot:
+
+* 4.1 R5:
+
+.. include::  k3.rst
+    :start-after: .. k3_rst_include_start_build_steps_spl_r5
+    :end-before: .. k3_rst_include_end_build_steps_spl_r5
+
+* 4.2 A53:
+
+.. include::  k3.rst
+    :start-after: .. k3_rst_include_start_build_steps_uboot
+    :end-before: .. k3_rst_include_end_build_steps_uboot
+.. am64x_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-am64x-gp-evm.bin from step 3.1
+        * tispl.bin_unsigned, u-boot.img_unsigned from step 3.2
+
+ - HS-FS
+
+        * tiboot3-am64x-hs-fs-evm.bin from step 3.1
+        * tispl.bin, u-boot.img from step 3.2
+
+ - HS-SE
+
+        * tiboot3-am64x-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
+
+- tispl.bin
+
+.. image:: img/nodm_tispl.bin.svg
+
+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 AM64 platform. More
+details can be found in the Technical Reference Manual:
+https://www.ti.com/lit/pdf/spruim2 under the `Boot Mode Pins` section.
+
+.. list-table:: Boot Modes for AM64x-EVM
+   :widths: 16 16 16
+   :header-rows: 1
+
+   * - Switch Label
+     - SW2: 12345678
+     - SW3: 12345678
+
+   * - SD/MMC
+     - 11000010
+     - 01000000
+
+   * - OSPI
+     - 11001110
+     - 01000000
+
+   * - UART
+     - 11011100
+     - 00000000
+
+.. note ::
+
+  For SW2 and SW3, the switch state in the "ON" position = 1.
+
+.. list-table:: Boot Modes for AM64x-SK
+   :widths: 16 16 16
+   :header-rows: 1
+
+   * - Switch Label
+     - SW2: 12345678
+     - SW3: 12345678
+
+   * - SD/MMC
+     - 00000010
+     - 01000011
+
+   * - xSPI/SFDP (OSPI)
+     - 00000010
+     - 01110011
+
+   * - UART
+     - 00000000
+     - 00111011
+
+.. note ::
+
+  For SW2 and SW3, the switch state in the "ON" position = 1.
+  Boot bits on SK is reversed bits to the bootmode signals
diff --git a/doc/board/ti/img/boot_diagram_am64.svg b/doc/board/ti/img/boot_diagram_am64.svg
new file mode 100644
index 0000000000..9c922a59fa
--- /dev/null
+++ b/doc/board/ti/img/boot_diagram_am64.svg
@@ -0,0 +1,1702 @@
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+              <xhtml:div
+                 style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">Release Reset</xhtml:div>
+            </xhtml:div>
+          </xhtml:div>
+        </foreignObject>
+        <text
+           x="203"
+           y="903"
+           fill="rgb(0, 0, 0)"
+           font-family="Helvetica"
+           font-size="11px"
+           text-anchor="middle"
+           id="text340">Release Re...</text>
+      </switch>
+    </g>
+  </g>
+  <switch
+     id="switch354">
+    <g
+       requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"
+       id="g348" />
+    <a
+       transform="translate(0,-5)"
+       xlink:href="https://www.drawio.com/doc/faq/svg-export-text-problems"
+       target="_blank"
+       id="a352">
+      <text
+         text-anchor="middle"
+         font-size="10px"
+         x="50%"
+         y="100%"
+         id="text350">Text is not SVG - cannot display</text>
+    </a>
+  </switch>
+</svg>
diff --git a/doc/board/ti/k3.rst b/doc/board/ti/k3.rst
index 9d40675b60..74fdc6b41c 100644
--- a/doc/board/ti/k3.rst
+++ b/doc/board/ti/k3.rst
@@ -31,6 +31,7 @@ K3 Based SoCs
    :maxdepth: 1
 
    am62x_sk
+   am64x_evm
    am65x_evm
    j7200_evm
    j721e_evm
-- 
2.34.1



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