diff options
| author | Tom Rini <[email protected]> | 2025-05-08 09:22:25 -0600 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-05-08 09:22:25 -0600 |
| commit | ffd5d9cc2720f225fc6e8fa557cb3487965b7067 (patch) | |
| tree | b9626c31b7a021a6405670a5b9a3ba6737e499f3 /doc | |
| parent | ac204f07b28aedc26ffe0c52f919cda01fc01361 (diff) | |
| parent | d5b9b7aa039b03e6de4b32cc961f7ec1205ded75 (diff) | |
Merge branch 'staging' of https://source.denx.de/u-boot/custodians/u-boot-tegra
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/board/asus/transformer_t114.rst | 2 | ||||
| -rw-r--r-- | doc/board/lg/index.rst | 1 | ||||
| -rw-r--r-- | doc/board/lg/star.rst | 125 | ||||
| -rw-r--r-- | doc/board/nvidia/tegratab.rst | 2 | ||||
| -rw-r--r-- | doc/board/xiaomi/mocha.rst | 2 |
5 files changed, 129 insertions, 3 deletions
diff --git a/doc/board/asus/transformer_t114.rst b/doc/board/asus/transformer_t114.rst index 3e42b5dd9a3..29094eeeaf4 100644 --- a/doc/board/asus/transformer_t114.rst +++ b/doc/board/asus/transformer_t114.rst @@ -36,7 +36,7 @@ To build U-Boot without SPL adjust tf701t_defconfig: CONFIG_TEXT_BASE=0x80A00000 CONFIG_SKIP_LOWLEVEL_INIT=y # CONFIG_OF_BOARD_SETUP is not set - CONFIG_TEGRA_SUPPORT_NON_SECURE=y + CONFIG_TEGRA_PRAM=y After the build succeeds, you will obtain the final ``u-boot-dtb.bin`` file, ready for booting with fastboot boot or which can be further processed into diff --git a/doc/board/lg/index.rst b/doc/board/lg/index.rst index 3af3681e0bb..2db0f2374ad 100644 --- a/doc/board/lg/index.rst +++ b/doc/board/lg/index.rst @@ -6,4 +6,5 @@ LG .. toctree:: :maxdepth: 2 + star x3_t30 diff --git a/doc/board/lg/star.rst b/doc/board/lg/star.rst new file mode 100644 index 00000000000..9e480929182 --- /dev/null +++ b/doc/board/lg/star.rst @@ -0,0 +1,125 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +U-Boot for the LG Optimus 2X P990 +================================= + +``DISCLAMER!`` Moving your device to use U-Boot assumes replacement of the +vendor bootloader. Vendor Android firmwares will no longer be able to run on +the device. This replacement IS reversible. + +Quick Start +----------- + +- Build U-Boot +- Process U-Boot +- Flashing U-Boot into the eMMC +- Boot +- Self Upgrading + +Build U-Boot +------------ + +.. code-block:: bash + + $ export CROSS_COMPILE=arm-none-eabi- + $ make star_defconfig + $ make + +After the build succeeds, you will obtain the final ``u-boot-dtb-tegra.bin`` +image, ready for further processing. + +Process U-Boot +-------------- + +``DISCLAMER!`` All questions related to the re-crypt work should be asked +in re-crypt repo issues. NOT HERE! + +re-crypt is a tool that processes the ``u-boot-dtb-tegra.bin`` binary into form +usable by device. This process is required only on the first installation or +to recover the device in case of a failed update. + +Permanent installation can be performed either by using the nv3p protocol or by +pre-loading just built U-Boot into RAM. + +Processing for the NV3P protocol +******************************** + +.. code-block:: bash + + $ git clone https://gitlab.com/grate-driver/re-crypt.git + $ cd re-crypt # place your u-boot-dtb-tegra.bin here + $ ./re-crypt.py --dev star + +The script will produce a ``repart-block.bin`` ready to flash. + +Processing for pre-loaded U-Boot +******************************** + +The procedure is the same, but the ``--split`` argument is used with the +``re-crypt.py``. The script will produce ``bct.img`` and ``ebt.img`` ready +to flash. + +Flashing U-Boot into the eMMC +----------------------------- + +``DISCLAMER!`` All questions related to NvFlash should be asked in the proper +place. NOT HERE! Flashing U-Boot will erase all eMMC, so make a backup before! + +Permanent installation can be performed either by using the nv3p protocol or by +pre-loading just built U-Boot into RAM. + +Flashing with the NV3P protocol +******************************* + +Nv3p is a custom Nvidia protocol used to recover bricked devices. Devices can +enter it by pre-loading vendor bootloader with nvflash. + +With nv3p, ``repart-block.bin`` is used. It contains BCT and a bootloader in +encrypted state in form, which can just be written RAW at the start of eMMC. + +.. code-block:: bash + + $ ./nvflash_v1.13.87205 --bct star.bct --setbct --odmdata 0xC8000 + --configfile flash.cfg --bl android_bootloader.bin --sync + $ ./utiils/nvflash_v1.13.87205 --resume --rawdevicewrite 0 2048 repart-block.bin + +When flashing is done, reboot the device. + +Flashing with a pre-loaded U-Boot +********************************* + +U-Boot pre-loaded into RAM acts the same as when it was booted "cold". Currently +U-Boot supports bootmenu entry fastboot, which allows to write a processed copy +of U-Boot permanently into eMMC. + +While pre-loading U-Boot, hold the ``volume down`` button which will trigger +the bootmenu. There, select ``fastboot`` using the volume and power buttons. +After, on host PC, do: + +.. code-block:: bash + + $ fastboot flash 0.1 bct.img + $ fastboot flash 0.2 ebt.img + $ fastboot reboot + +Device will reboot. + +Boot +---- + +To boot Linux, U-Boot will look for an ``extlinux.conf`` on MicroSD and then on +eMMC. Additionally, if the Volume Down button is pressed while booting, the +device will enter bootmenu. Bootmenu contains entries to mount MicroSD and eMMC +as mass storage, fastboot, reboot, reboot RCM, poweroff, enter U-Boot console +and update bootloader (check the next chapter). + +Flashing ``repart-block.bin`` eliminates vendor restrictions on eMMC and allows +the user to use/partition it in any way the user desires. + +Self Upgrading +-------------- + +Place your ``u-boot-dtb-tegra.bin`` on the first partition of the MicroSD card +and insert it into the device. Enter bootmenu, choose update the bootloader +option with the Power button and U-Boot should update itself. Once the process +is completed, U-Boot will ask to press any button to reboot. diff --git a/doc/board/nvidia/tegratab.rst b/doc/board/nvidia/tegratab.rst index c6d97ce3828..65150fc7fbf 100644 --- a/doc/board/nvidia/tegratab.rst +++ b/doc/board/nvidia/tegratab.rst @@ -36,7 +36,7 @@ To build U-Boot without SPL adjust tegratab_defconfig: CONFIG_TEXT_BASE=0x80A00000 CONFIG_SKIP_LOWLEVEL_INIT=y # CONFIG_OF_BOARD_SETUP is not set - CONFIG_TEGRA_SUPPORT_NON_SECURE=y + CONFIG_TEGRA_PRAM=y After the build succeeds, you will obtain the final ``u-boot-dtb.bin`` file, ready for booting with fastboot boot or which can be further processed into diff --git a/doc/board/xiaomi/mocha.rst b/doc/board/xiaomi/mocha.rst index be3e333127b..230081e3287 100644 --- a/doc/board/xiaomi/mocha.rst +++ b/doc/board/xiaomi/mocha.rst @@ -105,7 +105,7 @@ To build U-Boot without SPL suitable for chainloading adjust mocha_defconfig: CONFIG_TEXT_BASE=0x80A00000 CONFIG_SKIP_LOWLEVEL_INIT=y # CONFIG_OF_BOARD_SETUP is not set - CONFIG_TEGRA_SUPPORT_NON_SECURE=y + CONFIG_TEGRA_PRAM=y After the build succeeds, you will obtain the final ``u-boot-dtb.bin`` file, ready for booting using vendor bootloader's fastboot or which can be |
