Improve documentation.
Signed-off-by: Christian Hewitt christianshewitt@gmail.com --- doc/board/amlogic/libretech-ac.rst | 77 ++++++++++++++++-------------- 1 file changed, 42 insertions(+), 35 deletions(-)
diff --git a/doc/board/amlogic/libretech-ac.rst b/doc/board/amlogic/libretech-ac.rst index 7a915f9f26..6ebb7f646d 100644 --- a/doc/board/amlogic/libretech-ac.rst +++ b/doc/board/amlogic/libretech-ac.rst @@ -1,9 +1,9 @@ .. SPDX-License-Identifier: GPL-2.0+
-U-Boot for LibreTech AC -======================= +U-Boot for LibreTech-AC 'LaFrite' (S805X) +=========================================
-LibreTech AC is a single board computer manufactured by Libre Technology +LibreTech-AC aka 'LaFrite' is a Single Board Computer manufactured by Libre Computer with the following specifications:
- Amlogic S805X ARM Cortex-A53 quad-core SoC @ 1.2GHz @@ -13,12 +13,13 @@ with the following specifications: - HDMI 2.0 4K/60Hz display - 40-pin GPIO header - 4 x USB 2.0 Host - - eMMC, SPI NOR Flash + - SPI NOR Flash + - Removable eMMC module - Infrared receiver
Schematics are available on the manufacturer website.
-U-Boot compilation +U-Boot Compilation ------------------
.. code-block:: bash @@ -27,14 +28,20 @@ U-Boot compilation $ make libretech-ac_defconfig $ make
-Image creation --------------- +U-Boot Signing with Pre-Built FIP repo +--------------------------------------
-For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `lafrite` +.. code-block:: bash + $ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1 + $ cd amlogic-boot-fip + $ mkdir my-output-dir + $ ./build-fip.sh lafrite /path/to/u-boot/u-boot.bin my-output-dir + +U-Boot Manual Signing +---------------------
-Amlogic doesn't provide sources for the firmware and for tools needed -to create the bootloader image, so it is necessary to obtain them from -the git tree published by the board vendor: +Amlogic does not provide sources for the firmware and tools needed to create a bootloader +image so it is necessary to obtain binaries from sources published by the board vendor:
.. code-block:: bash
@@ -50,7 +57,7 @@ the git tree published by the board vendor: $ make $ export UBOOTDIR=$PWD
-Download the latest Amlogic Buildroot package, and extract it : +Download the latest Amlogic buildroot package and extract it:
.. code-block:: bash
@@ -58,7 +65,7 @@ Download the latest Amlogic Buildroot package, and extract it : $ tar xfz buildroot_openlinux_kernel_4.9_fbdev_20180418.tar.gz buildroot_openlinux_kernel_4.9_fbdev_20180418/bootloader $ export BRDIR=$PWD/buildroot_openlinux_kernel_4.9_fbdev_20180418
-Go back to mainline U-Boot source tree then : +Go back to the mainline U-Boot source tree then:
.. code-block:: bash
@@ -73,40 +80,40 @@ Go back to mainline U-Boot source tree then : $ cp u-boot.bin fip/bl33.bin
$ sh $UBOOTDIR/blx_fix.sh \ - fip/bl30.bin \ - fip/zero_tmp \ - fip/bl30_zero.bin \ - fip/bl301.bin \ - fip/bl301_zero.bin \ - fip/bl30_new.bin \ - bl30 + fip/bl30.bin \ + fip/zero_tmp \ + fip/bl30_zero.bin \ + fip/bl301.bin \ + fip/bl301_zero.bin \ + fip/bl30_new.bin \ + bl30
$ $BRDIR/bootloader/uboot-repo/fip/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
$ sh $UBOOTDIR/blx_fix.sh \ - fip/bl2_acs.bin \ - fip/zero_tmp \ - fip/bl2_zero.bin \ - fip/bl21.bin \ - fip/bl21_zero.bin \ - fip/bl2_new.bin \ - bl2 + fip/bl2_acs.bin \ + fip/zero_tmp \ + fip/bl2_zero.bin \ + fip/bl21.bin \ + fip/bl21_zero.bin \ + fip/bl2_new.bin \ + bl2
$ $BRDIR/bootloader/uboot-repo/fip/gxl/aml_encrypt_gxl --bl3enc --input fip/bl30_new.bin $ $BRDIR/bootloader/uboot-repo/fip/gxl/aml_encrypt_gxl --bl3enc --input fip/bl31.img $ $BRDIR/bootloader/uboot-repo/fip/gxl/aml_encrypt_gxl --bl3enc --input fip/bl33.bin $ $BRDIR/bootloader/uboot-repo/fip/gxl/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig $ $BRDIR/bootloader/uboot-repo/fip/gxl/aml_encrypt_gxl --bootmk \ - --output fip/u-boot.bin \ - --bl2 fip/bl2.n.bin.sig \ - --bl30 fip/bl30_new.bin.enc \ - --bl31 fip/bl31.img.enc \ - --bl33 fip/bl33.bin.enc + --output fip/u-boot.bin \ + --bl2 fip/bl2.n.bin.sig \ + --bl30 fip/bl30_new.bin.enc \ + --bl31 fip/bl31.img.enc \ + --bl33 fip/bl33.bin.enc
-and then write the image to SD with: +Then write U-Boot to USB or SPI-NOR with:
.. code-block:: bash
- $ DEV=/dev/your_sd_device + $ DEV=/dev/boot_device $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1 - $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=444 + $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440