Improve documentation.
Signed-off-by: Christian Hewitt christianshewitt@gmail.com --- doc/board/amlogic/s400.rst | 89 ++++++++++++++++++++------------------ 1 file changed, 47 insertions(+), 42 deletions(-)
diff --git a/doc/board/amlogic/s400.rst b/doc/board/amlogic/s400.rst index c92817b421..b00fe64e1b 100644 --- a/doc/board/amlogic/s400.rst +++ b/doc/board/amlogic/s400.rst @@ -1,15 +1,14 @@ .. SPDX-License-Identifier: GPL-2.0+
-U-Boot for Amlogic S400 -======================= +U-Boot for Amlogic S400 (A113X) +===============================
-S400 is a reference board manufactured by Amlogic with the following -specifications: +S400 is a reference board manufactured by Amlogic with the following specifications:
- - Amlogic A113DX ARM Cortex-A53 quad-core SoC @ 1.2GHz + - Amlogic A113X ARM Cortex-A53 quad-core SoC @ 1.2GHz - 1GB DDR4 SDRAM - 10/100 Ethernet - - 2 x USB 2.0 Host + - 2x USB 2.0 Host - eMMC - Infrared receiver - SDIO WiFi Module @@ -19,7 +18,7 @@ specifications:
Schematics are available from Amlogic on demand.
-U-Boot compilation +U-Boot Compilation ------------------
.. code-block:: bash @@ -28,14 +27,20 @@ U-Boot compilation $ make s400_defconfig $ make
-Image creation --------------- +U-Boot Signing with Pre-Built FIP repo +--------------------------------------
-For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `s400` +.. 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 s400 /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 but sources have been shared by Linux development contractor, Baylibre:
.. code-block:: bash
@@ -65,47 +70,47 @@ Go back to mainline U-boot source tree then : $ cp u-boot.bin fip/bl33.bin
$ $FIPDIR/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
$ $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
$ $FIPDIR/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
$ $FIPDIR/axg/aml_encrypt_axg --bl3sig --input fip/bl30_new.bin \ - --output fip/bl30_new.bin.enc \ - --level v3 --type bl30 + --output fip/bl30_new.bin.enc \ + --level v3 --type bl30 $ $FIPDIR/axg/aml_encrypt_axg --bl3sig --input fip/bl31.img \ - --output fip/bl31.img.enc \ - --level v3 --type bl31 + --output fip/bl31.img.enc \ + --level v3 --type bl31 $ $FIPDIR/axg/aml_encrypt_axg --bl3sig --input fip/bl33.bin --compress lz4 \ - --output fip/bl33.bin.enc \ - --level v3 --type bl33 + --output fip/bl33.bin.enc \ + --level v3 --type bl33 $ $FIPDIR/axg/aml_encrypt_axg --bl2sig --input fip/bl2_new.bin \ - --output fip/bl2.n.bin.sig + --output fip/bl2.n.bin.sig $ $FIPDIR/axg/aml_encrypt_axg --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 --level v3 + --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 --level v3
-and then write the image to SD with: +Then write U-Boot to SD or eMMC 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