mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 10:48:51 +00:00
a3bbd0b912
The U-Boot source moves to https://source.denx.de/u-boot/u-boot.git effective 2021-02-28. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
274 lines
15 KiB
Text
274 lines
15 KiB
Text
Introduction:
|
|
-------------
|
|
The J721e 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
|
|
- 2 x Dual cortex ARM Cortex-R5 subsystem
|
|
- 2 x C66x Digital signal processor sub system
|
|
- C71x Digital signal processor sub-system with MMA.
|
|
|
|
More info can be found in TRM: http://www.ti.com/lit/pdf/spruil1
|
|
|
|
Boot Flow:
|
|
----------
|
|
Boot flow is similar to that of AM65x SoC and extending it with remoteproc
|
|
support. Below is the pictorial representation of boot flow:
|
|
|
|
+------------------------------------------------------------------------+-----------------------+
|
|
| DMSC | MCU R5 | A72 | MAIN R5/C66x/C7x |
|
|
+------------------------------------------------------------------------+-----------------------+
|
|
| +--------+ | | | |
|
|
| | Reset | | | | |
|
|
| +--------+ | | | |
|
|
| : | | | |
|
|
| +--------+ | +-----------+ | | |
|
|
| | *ROM* |----------|-->| Reset rls | | | |
|
|
| +--------+ | +-----------+ | | |
|
|
| | | | : | | |
|
|
| | ROM | | : | | |
|
|
| |services| | : | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | | *R5 ROM* | | | |
|
|
| | | | +-------------+ | | |
|
|
| | |<---------|---|Load and auth| | | |
|
|
| | | | | tiboot3.bin | | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | : | | |
|
|
| | | | : | | |
|
|
| | | | : | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | | *R5 SPL* | | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | | Load | | | |
|
|
| | | | | sysfw.itb | | | |
|
|
| | Start | | +-------------+ | | |
|
|
| | System |<---------|---| Start | | | |
|
|
| |Firmware| | | SYSFW | | | |
|
|
| +--------+ | +-------------+ | | |
|
|
| : | | | | | |
|
|
| +---------+ | | Load | | | |
|
|
| | *SYSFW* | | | system | | | |
|
|
| +---------+ | | Config data | | | |
|
|
| | |<--------|---| | | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | | DDR | | | |
|
|
| | | | | config | | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | | Load | | | |
|
|
| | | | | tispl.bin | | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | | Load R5 | | | |
|
|
| | | | | firmware | | | |
|
|
| | | | +-------------+ | | |
|
|
| | |<--------|---| Start A72 | | | |
|
|
| | | | | and jump to | | | |
|
|
| | | | | next image | | | |
|
|
| | | | +-------------+ | | |
|
|
| | | | | +-----------+ | |
|
|
| | |---------|-----------------------|---->| Reset rls | | |
|
|
| | | | | +-----------+ | |
|
|
| | DMSC | | | : | |
|
|
| |Services | | | +-----------+ | |
|
|
| | |<--------|-----------------------|---->|*ATF/OPTEE*| | |
|
|
| | | | | +-----------+ | |
|
|
| | | | | : | |
|
|
| | | | | +-----------+ | |
|
|
| | |<--------|-----------------------|---->| *A72 SPL* | | |
|
|
| | | | | +-----------+ | |
|
|
| | | | | | Load | | |
|
|
| | | | | | u-boot.img| | |
|
|
| | | | | +-----------+ | |
|
|
| | | | | : | |
|
|
| | | | | +-----------+ | |
|
|
| | |<--------|-----------------------|---->| *U-Boot* | | |
|
|
| | | | | +-----------+ | |
|
|
| | | | | | prompt | | |
|
|
| | | | | +-----------+ | |
|
|
| | | | | | Load R5 | | |
|
|
| | | | | | Firmware | | |
|
|
| | | | | +-----------+ | |
|
|
| | |<--------|-----------------------|-----| Start R5 | | +-----------+ |
|
|
| | |---------|-----------------------|-----+-----------+-----|----->| R5 starts | |
|
|
| | | | | | Load C6 | | +-----------+ |
|
|
| | | | | | Firmware | | |
|
|
| | | | | +-----------+ | |
|
|
| | |<--------|-----------------------|-----| Start C6 | | +-----------+ |
|
|
| | |---------|-----------------------|-----+-----------+-----|----->| C6 starts | |
|
|
| | | | | | Load C7 | | +-----------+ |
|
|
| | | | | | Firmware | | |
|
|
| | | | | +-----------+ | |
|
|
| | |<--------|-----------------------|-----| Start C7 | | +-----------+ |
|
|
| | |---------|-----------------------|-----+-----------+-----|----->| C7 starts | |
|
|
| +---------+ | | | +-----------+ |
|
|
| | | | |
|
|
+------------------------------------------------------------------------+-----------------------+
|
|
|
|
- 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:
|
|
--------
|
|
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
|
|
|
|
Build procedure:
|
|
----------------
|
|
1. SYSFW:
|
|
$ make CROSS_COMPILE=arm-linux-gnueabihf-
|
|
|
|
2. ATF:
|
|
$ make CROSS_COMPILE=aarch64-linux-gnu- ARCH=aarch64 PLAT=k3 TARGET_BOARD=generic SPD=opteed
|
|
|
|
3. OPTEE:
|
|
$ make PLATFORM=k3-j721e CFG_ARM64_core=y
|
|
|
|
4. U-Boot:
|
|
|
|
4.1. R5:
|
|
$ make CROSS_COMPILE=arm-linux-gnueabihf- j721e_evm_r5_defconfig O=/tmp/r5
|
|
$ make CROSS_COMPILE=arm-linux-gnueabihf- O=/tmp/r5
|
|
|
|
4.2. A72:
|
|
$ make CROSS_COMPILE=aarch64-linux-gnu- j721e_evm_a72_defconfig O=/tmp/a72
|
|
$ make CROSS_COMPILE=aarch64-linux-gnu- ATF=<path to ATF dir>/build/k3/generic/release/bl31.bin TEE=<path to OPTEE OS dir>/out/arm-plat-k3/core/tee-pager_v2.bin O=/tmp/a72
|
|
|
|
Target Images
|
|
--------------
|
|
Copy the below images to an SD card and boot:
|
|
- sysfw.itb from step 1
|
|
- tiboot3.bin from step 4.1
|
|
- tispl.bin, u-boot.img from 4.2
|
|
|
|
Image formats:
|
|
--------------
|
|
|
|
- tiboot3.bin:
|
|
+-----------------------+
|
|
| X.509 |
|
|
| Certificate |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | R5 | |
|
|
| | u-boot-spl.bin | |
|
|
| | | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | FIT header | |
|
|
| | +---------------+ | |
|
|
| | | | | |
|
|
| | | DTB 1...N | | |
|
|
| | +---------------+ | |
|
|
| +-------------------+ |
|
|
+-----------------------+
|
|
|
|
- tispl.bin
|
|
+-----------------------+
|
|
| |
|
|
| FIT HEADER |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | A72 ATF | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | A72 OPTEE | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | A72 SPL | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | SPL DTB 1...N | |
|
|
| +-------------------+ |
|
|
+-----------------------+
|
|
|
|
- sysfw.itb
|
|
+-----------------------+
|
|
| |
|
|
| FIT HEADER |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | sysfw.bin | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | board config | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | PM config | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | RM config | |
|
|
| +-------------------+ |
|
|
| | | |
|
|
| | Secure config | |
|
|
| +-------------------+ |
|
|
+-----------------------+
|
|
|
|
OSPI:
|
|
-----
|
|
ROM supports booting from OSPI from offset 0x0.
|
|
|
|
Flashing images to OSPI:
|
|
|
|
Below commands can be used to download tiboot3.bin, tispl.bin, u-boot.img,
|
|
and sysfw.itb over tftp and then flash those to OSPI at their respective
|
|
addresses.
|
|
|
|
=> sf probe
|
|
=> tftp ${loadaddr} tiboot3.bin
|
|
=> sf update $loadaddr 0x0 $filesize
|
|
=> tftp ${loadaddr} tispl.bin
|
|
=> sf update $loadaddr 0x80000 $filesize
|
|
=> tftp ${loadaddr} u-boot.img
|
|
=> sf update $loadaddr 0x280000 $filesize
|
|
=> tftp ${loadaddr} sysfw.itb
|
|
=> sf update $loadaddr 0x6C0000 $filesize
|
|
|
|
Flash layout for OSPI:
|
|
|
|
0x0 +----------------------------+
|
|
| ospi.tiboot3(512K) |
|
|
| |
|
|
0x80000 +----------------------------+
|
|
| ospi.tispl(2M) |
|
|
| |
|
|
0x280000 +----------------------------+
|
|
| ospi.u-boot(4M) |
|
|
| |
|
|
0x680000 +----------------------------+
|
|
| ospi.env(128K) |
|
|
| |
|
|
0x6A0000 +----------------------------+
|
|
| ospi.env.backup (128K) |
|
|
| |
|
|
0x6C0000 +----------------------------+
|
|
| ospi.sysfw(1M) |
|
|
| |
|
|
0x7C0000 +----------------------------+
|
|
| padding (256k) |
|
|
0x800000 +----------------------------+
|
|
| ospi.rootfs(UBIFS) |
|
|
| |
|
|
+----------------------------+
|