mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-13 23:02:59 +00:00
ca845d20e6
Use prompt instead of code-block to have copy-paste friendly command documentation. Signed-off-by: Nishanth Menon <nm@ti.com>
231 lines
5.8 KiB
ReStructuredText
231 lines
5.8 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
|
.. sectionauthor:: Udit Kumar <u-kumar1@ti.com>
|
|
|
|
J7200 Platforms
|
|
===============
|
|
|
|
Introduction:
|
|
-------------
|
|
The J7200 family of SoCs are part of K3 Multicore SoC architecture platform
|
|
targeting automotive applications. They are designed as a low power, high
|
|
performance and highly integrated device architecture, adding significant
|
|
enhancement on processing power, graphics capability, video and imaging
|
|
processing, virtualization and coherent memory support.
|
|
|
|
The device is partitioned into three functional domains, each containing
|
|
specific processing cores and peripherals:
|
|
|
|
1. Wake-up (WKUP) domain:
|
|
* Device Management and Security Controller (DMSC)
|
|
|
|
2. Microcontroller (MCU) domain:
|
|
* Dual Core ARM Cortex-R5F processor
|
|
|
|
3. MAIN domain:
|
|
* Dual core 64-bit ARM Cortex-A72
|
|
|
|
More info can be found in TRM: https://www.ti.com/lit/pdf/spruiu1
|
|
|
|
Platform information:
|
|
|
|
* https://www.ti.com/tool/J7200XSOMXEVM
|
|
|
|
Boot Flow:
|
|
----------
|
|
Below is the pictorial representation of boot flow:
|
|
|
|
.. image:: img/boot_diagram_k3_current.svg
|
|
:alt: Boot flow diagram
|
|
|
|
- Here DMSC acts as master and provides all the critical services. R5/A72
|
|
requests DMSC 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
|
|
.. prompt:: bash $
|
|
|
|
export UBOOT_CFG_CORTEXR=j7200_evm_r5_defconfig
|
|
export UBOOT_CFG_CORTEXA=j7200_evm_a72_defconfig
|
|
export TFA_BOARD=generic
|
|
# we dont use any extra TFA parameters
|
|
unset TFA_EXTRA_ARGS
|
|
export OPTEE_PLATFORM=k3-j7200
|
|
# we dont use any extra OP-TEE parameters
|
|
unset OPTEE_EXTRA_ARGS
|
|
|
|
.. j7200_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:
|
|
|
|
* 3.1 R5:
|
|
|
|
.. include:: k3.rst
|
|
:start-after: .. k3_rst_include_start_build_steps_spl_r5
|
|
:end-before: .. k3_rst_include_end_build_steps_spl_r5
|
|
|
|
* 3.2 A72:
|
|
|
|
.. include:: k3.rst
|
|
:start-after: .. k3_rst_include_start_build_steps_uboot
|
|
:end-before: .. k3_rst_include_end_build_steps_uboot
|
|
.. j7200_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-j7200-gp-evm.bin from step 3.1
|
|
* tispl.bin_unsigned, u-boot.img_unsigned from step 3.2
|
|
|
|
- HS-FS
|
|
|
|
* tiboot3-j7200_sr2-hs-fs-evm.bin from step 3.1
|
|
* tispl.bin, u-boot.img from step 3.2
|
|
|
|
- HS-SE
|
|
|
|
* tiboot3-j7200_sr2-hs-evm.bin from step 3.1
|
|
* tispl.bin, u-boot.img from step 3.2
|
|
|
|
Image formats:
|
|
--------------
|
|
|
|
- tiboot3.bin
|
|
|
|
.. image:: img/j7200_tiboot3.bin.svg
|
|
:alt: tiboot3.bin image format
|
|
|
|
- tispl.bin
|
|
|
|
.. image:: img/dm_tispl.bin.svg
|
|
:alt: tispl.bin image format
|
|
|
|
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 J7200 platform. More
|
|
details can be found in the Technical Reference Manual:
|
|
https://www.ti.com/lit/pdf/spruiu1 under the `Boot Mode Pins` section.
|
|
|
|
.. list-table:: Boot Modes
|
|
:widths: 16 16 16
|
|
:header-rows: 1
|
|
|
|
* - Switch Label
|
|
- SW9: 12345678
|
|
- SW8: 12345678
|
|
|
|
* - SD
|
|
- 00000000
|
|
- 10000010
|
|
|
|
* - EMMC
|
|
- 01000000
|
|
- 10000000
|
|
|
|
* - OSPI
|
|
- 01000000
|
|
- 00000110
|
|
|
|
* - UART
|
|
- 01110000
|
|
- 00000000
|
|
|
|
* - USB DFU
|
|
- 00100000
|
|
- 10000000
|
|
|
|
For SW8 and SW9, the switch state in the "ON" position = 1.
|
|
|
|
eMMC:
|
|
-----
|
|
ROM supports booting from eMMC raw read or UDA FS mode.
|
|
|
|
Below is memory layout in case of booting from
|
|
boot 0/1 partition in raw mode.
|
|
|
|
Current allocated size for tiboot3 size is 1MB, tispl is 2MB.
|
|
|
|
Size of u-boot.img is taken 4MB for refernece,
|
|
But this is subject to change depending upon atf, optee size
|
|
|
|
.. image:: img/emmc_j7200_evm_boot01.svg
|
|
:alt: Traditional eMMC boot partition layout
|
|
|
|
In case of UDA FS mode booting, following is layout.
|
|
|
|
All boot images tiboot3.bin, tispl and u-boot should be written to
|
|
fat formatted UDA FS as file.
|
|
|
|
.. image:: img/emmc_j7200_evm_udafs.svg
|
|
:alt: eMMC UDA boot partition layout
|
|
|
|
In case of booting from eMMC, write above images into raw or UDA FS.
|
|
and set mmc partconf accordingly.
|
|
|
|
Debugging U-Boot
|
|
----------------
|
|
|
|
See :ref:`Common Debugging environment - OpenOCD<k3_rst_refer_openocd>`: for
|
|
detailed setup information.
|
|
|
|
.. warning::
|
|
|
|
**OpenOCD support since**: v0.12.0
|
|
|
|
If the default package version of OpenOCD in your development
|
|
environment's distribution needs to be updated, it might be necessary to
|
|
build OpenOCD from the source.
|
|
|
|
.. include:: k3.rst
|
|
:start-after: .. k3_rst_include_start_openocd_connect_XDS110
|
|
:end-before: .. k3_rst_include_end_openocd_connect_XDS110
|
|
|
|
To start OpenOCD and connect to the board
|
|
|
|
.. prompt:: bash $
|
|
|
|
openocd -f board/ti_j7200evm.cfg
|