[PATCH 18/33] doc: boards: amlogic: update documentation for ODROID-N2/N2+
Christian Hewitt
christianshewitt at gmail.com
Mon Mar 20 12:45:54 CET 2023
Improve documentation. Notably mention the ODROID-N2+ and the option
to use FDTDIR not FDT for automatic device-tree selection.
Signed-off-by: Christian Hewitt <christianshewitt at gmail.com>
---
doc/board/amlogic/odroid-n2.rst | 122 +++++++++++++++++---------------
1 file changed, 65 insertions(+), 57 deletions(-)
diff --git a/doc/board/amlogic/odroid-n2.rst b/doc/board/amlogic/odroid-n2.rst
index 7aad36e003..8ca1f89699 100644
--- a/doc/board/amlogic/odroid-n2.rst
+++ b/doc/board/amlogic/odroid-n2.rst
@@ -1,10 +1,10 @@
.. SPDX-License-Identifier: GPL-2.0+
-U-Boot for ODROID-N2
-====================
+U-Boot for ODROID-N2/N2+ (S922X)
+================================
-ODROID-N2 is a single board computer manufactured by Hardkernel
-Co. Ltd with the following specifications:
+ODROID-N2 and ODROID-N2+ are a Single Board Computers manufactured by Hardkernel with the
+following specifications:
- Amlogic S922X ARM Cortex-A53 dual-core + Cortex-A73 quad-core SoC
- 4GB DDR4 SDRAM
@@ -15,9 +15,13 @@ Co. Ltd with the following specifications:
- eMMC, microSD
- Infrared receiver
-Schematics are available on the manufacturer website.
+ODROID-N2+ uses Rev-C silicon allowing higher CPU opp-points. U-Boot contains logic to
+read the model detail from SARADC and select the correct device-tree file if FDTDIR is
+used instead of an FDT reference to a specfic device-tree.
-U-Boot compilation
+Schematics are available on the manufacturer website: https://wiki.odroid.com
+
+U-Boot Compilation
------------------
.. code-block:: bash
@@ -26,14 +30,20 @@ U-Boot compilation
$ make odroid-n2_defconfig
$ make
-Image creation
---------------
+U-Boot Signing with Pre-Built FIP repo
+--------------------------------------
+
+.. 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 odroid-n2 /path/to/u-boot/u-boot.bin my-output-dir
-For simplified usage, pleaser refer to :doc:`pre-generated-fip` with codename `odroid-n2` or `odroid-n2-plus`
+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
@@ -44,16 +54,14 @@ the git tree published by the board vendor:
$ export PATH=$PWD/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux/bin:$PWD/gcc-linaro-arm-none-eabi-4.8-2013.11_linux/bin:$PATH
$ DIR=odroid-n2
- $ git clone --depth 1 \
- https://github.com/hardkernel/u-boot.git -b odroidn2-v2015.01 \
- $DIR
+ $ git clone --depth 1 https://github.com/hardkernel/u-boot.git -b odroidn2-v2015.01 $DIR
$ cd odroid-n2
$ make odroidn2_defconfig
$ make
$ export UBOOTDIR=$PWD
- Go back to mainline U-Boot source tree then :
+Go back to the mainline U-Boot source tree then:
.. code-block:: bash
@@ -76,57 +84,57 @@ the git tree published by the board vendor:
$ cp u-boot.bin fip/bl33.bin
$ sh fip/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
$ sh fip/blx_fix.sh \
- fip/bl2.bin \
- fip/zero_tmp \
- fip/bl2_zero.bin \
- fip/acs.bin \
- fip/bl21_zero.bin \
- fip/bl2_new.bin \
- bl2
+ fip/bl2.bin \
+ fip/zero_tmp \
+ fip/bl2_zero.bin \
+ fip/acs.bin \
+ fip/bl21_zero.bin \
+ fip/bl2_new.bin \
+ bl2
$ $UBOOTDIR/fip/g12b/aml_encrypt_g12b --bl30sig --input fip/bl30_new.bin \
- --output fip/bl30_new.bin.g12a.enc \
- --level v3
+ --output fip/bl30_new.bin.g12a.enc \
+ --level v3
$ $UBOOTDIR/fip/g12b/aml_encrypt_g12b --bl3sig --input fip/bl30_new.bin.g12a.enc \
- --output fip/bl30_new.bin.enc \
- --level v3 --type bl30
+ --output fip/bl30_new.bin.enc \
+ --level v3 --type bl30
$ $UBOOTDIR/fip/g12b/aml_encrypt_g12b --bl3sig --input fip/bl31.img \
- --output fip/bl31.img.enc \
- --level v3 --type bl31
+ --output fip/bl31.img.enc \
+ --level v3 --type bl31
$ $UBOOTDIR/fip/g12b/aml_encrypt_g12b --bl3sig --input fip/bl33.bin --compress lz4 \
- --output fip/bl33.bin.enc \
- --level v3 --type bl33 --compress lz4
+ --output fip/bl33.bin.enc \
+ --level v3 --type bl33 --compress lz4
$ $UBOOTDIR/fip/g12b/aml_encrypt_g12b --bl2sig --input fip/bl2_new.bin \
- --output fip/bl2.n.bin.sig
+ --output fip/bl2.n.bin.sig
$ $UBOOTDIR/fip/g12b/aml_encrypt_g12b --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 \
- --ddrfw1 fip/ddr4_1d.fw \
- --ddrfw2 fip/ddr4_2d.fw \
- --ddrfw3 fip/ddr3_1d.fw \
- --ddrfw4 fip/piei.fw \
- --ddrfw5 fip/lpddr4_1d.fw \
- --ddrfw6 fip/lpddr4_2d.fw \
- --ddrfw7 fip/diag_lpddr4.fw \
- --ddrfw8 fip/aml_ddr.fw \
- --level v3
-
-and then write the image to SD with:
+ --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 \
+ --ddrfw1 fip/ddr4_1d.fw \
+ --ddrfw2 fip/ddr4_2d.fw \
+ --ddrfw3 fip/ddr3_1d.fw \
+ --ddrfw4 fip/piei.fw \
+ --ddrfw5 fip/lpddr4_1d.fw \
+ --ddrfw6 fip/lpddr4_2d.fw \
+ --ddrfw7 fip/diag_lpddr4.fw \
+ --ddrfw8 fip/aml_ddr.fw \
+ --level v3
+
+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
--
2.34.1
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