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Diffstat (limited to 'doc/board/samsung')
| -rw-r--r-- | doc/board/samsung/index.rst | 1 | ||||
| -rw-r--r-- | doc/board/samsung/n1.rst | 51 |
2 files changed, 52 insertions, 0 deletions
diff --git a/doc/board/samsung/index.rst b/doc/board/samsung/index.rst index a1c9636b050..1b92c9518a5 100644 --- a/doc/board/samsung/index.rst +++ b/doc/board/samsung/index.rst @@ -8,3 +8,4 @@ Samsung axy17lte e850-96 + n1 diff --git a/doc/board/samsung/n1.rst b/doc/board/samsung/n1.rst new file mode 100644 index 00000000000..4dbb3141774 --- /dev/null +++ b/doc/board/samsung/n1.rst @@ -0,0 +1,51 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +U-Boot for the Samsung N1 device family +======================================= + +``DISCLAMER!`` Moving your Samsung Galaxy R (GT-I9103) or Samsung Captivate Glide +(SGH-i927) to use U-Boot assumes replacement of the sboot. Vendor android firmwares +will no longer be able to run on the device. This replacement IS reversible. + +Quick Start +----------- + +- Build U-Boot +- Boot + +Build U-Boot +------------ + +Device support is implemented by applying config fragment to a generic board +defconfig. Generic board defconfig is suitable for Samsung Galaxy R (GT-I9103) +while Samsung Captivate Glide (SGH-i927) support is provided by applying +``bose.config`` fragment. + +.. code-block:: bash + + $ export CROSS_COMPILE=arm-none-eabi- + $ make n1_defconfig bose.config # For Captivate Glide + $ make + +After the build succeeds, you will obtain the final ``u-boot-dtb-tegra.bin`` +image, ready for further processing. + +Boot +---- + +Currently, U-Boot can be preloaded into RAM via the NvFlash. To enter +RCM protocol use ``home`` and ``volume up`` for Galaxy R and ``volume down`` +and ``volume up`` Captivate Glide key combination plus plugging usb in. +The host PC should recognize an APX device. + +Built U-Boot ``u-boot-dtb-tegra.bin`` can be loaded from fusee-tools +directory with + +.. code-block:: bash + + $ ./utils/nvflash_t20 --setbct --bct ./bct/i927.bct --configfile ./utils/flash.cfg --bl u-boot-dtb-tegra.bin --sbk (in form of 0xABCDABCD 4 times) --sync # For Captivate Glide + +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 loading, the +device will enter bootmenu. Bootmenu contains entries to mount MicroSD and eMMC +as mass storage, fastboot, reboot, reboot RCM and poweroff. |