Include information about permanent ethernet MAC address and add link how
to build ATF as U-Boot on Espressobin cannot be flashed without ATF.
Signed-off-by: Pali Rohár <p...@kernel.org>
---
doc/README.marvell | 40 +++++++++++++++++++++++++++++++++++++---
1 file changed, 37 insertions(+), 3 deletions(-)
diff --git a/doc/README.marvell b/doc/README.marvell
index 336461745c..da16316407 100644
--- a/doc/README.marvell
+++ b/doc/README.marvell
@@ -13,7 +13,8 @@ Build Procedure
2. Set the cross compiler:
- # export
CROSS_COMPILE=/path/to/toolchain/aarch64-marvell-linux-gnu-
+ # sudo apt-get install gcc-aarch64-linux-gnu
+ # export CROSS_COMPILE=aarch64-linux-gnu-
3. Clean-up old residuals:
@@ -30,7 +31,7 @@ Build Procedure
5. Configure the device-tree and build the U-Boot image:
- Compile u-boot and set the required device-tree using:
+ For the Armada-70x0/80x0 DB board compile u-boot and set the required
device-tree using:
# make DEVICE_TREE=<name>
@@ -42,12 +43,45 @@ Build Procedure
In order to prevent this, the required device-tree MUST be set during
compilation.
All device-tree files are located in ./arch/arm/dts/ folder.
+ For other DB boards (MacchiatoBin, EspressoBin and 3700 DB board)
compile u-boot with
+ just default device-tree from defconfig using:
+
+ # make
+
NOTE:
The u-boot.bin should not be used as a stand-alone image.
The ARM Trusted Firmware (ATF) build process uses this image to
generate the
- flash image.
+ flash image. See TF-A Build Instructions for Marvell Platforms for more
details at:
+
https://trustedfirmware-a.readthedocs.io/en/latest/plat/marvell/armada/build.html
Configuration update
---------------------
To update the U-Boot configuration, please refer to doc/README.kconfig
+
+Permanent ethernet MAC address
+-------------------------------
+ Prior flashing new U-Boot version (as part of ATF image) it is
suggested to backup
+ permanent ethernet MAC address as it is stored only in U-Boot env
storage (SPI or eMMC).
+ Some boards like EspressoBin have MAC address printed on sticker. To
print current MAC
+ address run:
+
+ # echo $ethaddr
+
+ MAC addresses 00:51:82:11:22:00, 00:51:82:11:22:01, 00:51:82:11:22:02,
00:51:82:11:22:03
+ and F0:AD:4E:03:64:7F are default hardcoded values found in Marvell's
and Armbian U-Boot
+ forks and therefore *not* unique. Usage of static hardcoded MAC
addresses should be avoided.
+ When original address is lost (e.g. erased by Armbian boot scripts for
EspressoBin) it is
+ suggested to generate new random one.
+
+ After flashing new U-Boot version it is suggested to reset U-Boot env
variables to default
+ and then set correct permanent ethernet MAC address.
+
+ # env default -a
+ # setenv ethaddr XX:XX:XX:XX:XX:XX
+ # saveenv
+
+ Where XX:XX:XX:XX:XX:XX is permanent ethernet MAC address.
+
+ Recent Linux kernel versions use correct permanent ethernet MAC address
from U-Boot env as
+ U-Boot will inject it into kernel's device-tree.
--
2.20.1
