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Merge patch series "Enable Ethernet boot on SK-AM62A-LP"

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Chintan Vankar <c-vankar@ti.com> says:

This series enables Ethernet boot on SK-AM62A-LP. The series is based on
commit 'a18265f1ccb7' of origin/next branch of U-Boot repo.

Link: https://lore.kernel.org/r/20260716080553.2664147-1-c-vankar@ti.com
This commit is contained in:
Tom Rini
2026-07-28 12:30:50 -06:00
parent 47b70ba39a 179a5619aa
commit 5c6c504c4d
5 changed files with 233 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/dts/k3-am62a7-r5-sk.dts
+4
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@@ -42,3 +42,7 @@
status = "okay";
bootph-pre-ram;
};
&main_pktdma {
ti,sci = <&dm_tifs>;
};
board/ti/am62ax/MAINTAINERS
+2
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@@ -7,3 +7,5 @@ F: board/ti/am62ax/
F: include/configs/am62a7_evm.h
F: configs/am62ax_evm_r5_defconfig
F: configs/am62ax_evm_a53_defconfig
F: configs/am62ax_evm_r5_ethboot_defconfig
F: configs/am62ax_evm_a53_ethboot_defconfig
configs/am62ax_evm_a53_ethboot_defconfig
+10
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@@ -0,0 +1,10 @@
#include <configs/am62ax_evm_a53_defconfig>
CONFIG_SPL_DRIVERS_MISC=y
CONFIG_SPL_BOARD_INIT=y
CONFIG_SPL_DMA=y
CONFIG_SPL_ENV_SUPPORT=y
CONFIG_SPL_ETH=y
CONFIG_SPL_NET=y
CONFIG_SPL_NET_VCI_STRING="AM62AX U-Boot A53 SPL"
CONFIG_SPL_SYSCON=y
configs/am62ax_evm_r5_ethboot_defconfig
+21
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@@ -0,0 +1,21 @@
#include <configs/am62ax_evm_r5_defconfig>
# CONFIG_NO_NET is not set
CONFIG_SPL_GPIO=y
CONFIG_SPL_MMC=n
CONFIG_SPL_STACK_R_ADDR=0x82000000
CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x200000
CONFIG_SPL_DMA=y
CONFIG_SPL_ENV_SUPPORT=y
CONFIG_SPL_ETH=y
CONFIG_SPL_I2C=y
CONFIG_NET=y
CONFIG_SPL_NET=y
CONFIG_SPL_NET_VCI_STRING="AM62AX U-Boot R5 SPL"
CONFIG_CMD_DHCP=y
CONFIG_SPL_SYSCON=y
CONFIG_DMA_CHANNELS=y
CONFIG_TI_K3_NAVSS_UDMA=y
CONFIG_DM_I2C=y
CONFIG_PHY_TI_DP83867=y
CONFIG_TI_AM65_CPSW_NUSS=y
doc/board/ti/am62ax_sk.rst
+196 -1
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@@ -185,7 +185,202 @@ https://www.ti.com/lit/pdf/spruj16 under the `Boot Mode Pins` section.
- 00000000
- 11001010
For SW2 and SW1, the switch state in the "ON" position = 1.
* - Ethernet
- 00110000
- 11000100
For SW3 and SW2, the switch state in the "ON" position = 1.
Ethernet based boot
-------------------
To boot the board via Ethernet, configure the BOOT MODE pins for Ethernet boot.
On powering on the device, ROM uses the Ethernet Port corresponding to CPSW3G's MAC
Port 1 to transmit "TI K3 Bootp Boot".
The TFTP server and DHCP server on the receiver device need to be configured such
that VCI string "TI K3 Bootp Boot" maps to the file `tiboot3.bin` and the TFTP
server should be capable of transferring it to the device.
**Configuring DHCP server includes following steps:**
* Install DHCP server:
.. prompt:: bash $
sudo apt install isc-dhcp-server
* Disable services before configuring:
.. prompt:: bash $
sudo systemctl disable --now isc-dhcp-server.service isc-dhcp-server6.service
* DHCP server setup
Run the ip link or ifconfig command to find the name of your network interface:
Example
.. code-block::
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.5 netmask 255.255.255.0 broadcast 10.0.0.255
inet6 fe80::1a2b:3c4d:5e6f:7a8b prefixlen 64 scopeid 0x20<link>
ether aa:bb:cc:dd:ee:ff txqueuelen 1000 (Ethernet)
RX packets 100000 bytes 120000000 (120.0 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 50000 bytes 6000000 (6.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enx001122334455: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 00:11:22:33:44:55 txqueuelen 1000 (Ethernet)
RX packets 200 bytes 64000 (64.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 150 bytes 20000 (20.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 10000 bytes 800000 (800.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10000 bytes 800000 (800.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Suppose we are using enx001122334455 interface, one end of it is connected to host PC
and other to board.
* Do the following changes in /etc/dhcp/dhcpd.conf in host PC.
.. code-block::
subnet 192.168.0.0 netmask 255.255.254.0
{
range dynamic-bootp 192.168.0.2 192.168.0.5;
if substring (option vendor-class-identifier, 0, 16) = "TI K3 Bootp Boot"
{
filename "tiboot3.bin";
} elsif substring (option vendor-class-identifier, 0, 20) = "AM62AX U-Boot R5 SPL"
{
filename "tispl.bin";
} elsif substring (option vendor-class-identifier, 0, 21) = "AM62AX U-Boot A53 SPL"
{
filename "u-boot.img";
}
default-lease-time 60000;
max-lease-time 720000;
next-server 192.168.0.1;
}
* Do following changes in /etc/default/isc-dhcp-server
.. code-block::
DHCPDv4_CONF=/etc/dhcp/dhcpd.conf
INTERFACESv4="enx001122334455"
INTERFACESv6=""
* For your interface change ip address and netmask to next-server and your netmask
.. prompt:: bash $
sudo ifconfig enx001122334455 192.168.0.1 netmask 255.255.254.0
* Enable DHCP
.. prompt:: bash $
sudo systemctl enable --now isc-dhcp-server
* To see if there is any configuration error or if dhcp is running run
.. prompt:: bash $
sudo service isc-dhcp-server status
# If it shows error then something is wrong with configuration
**For TFTP setup follow below steps:**
* Install TFTP server:
.. prompt:: bash $
sudo apt install tftpd-hpa
tftpd-hpa package should be installed.
Now, check whether the tftpd-hpa service is running with the following command:
.. prompt:: bash $
sudo systemctl status tftpd-hpa
* Configuring TFTP server:
The default configuration file of tftpd-hpa server is /etc/default/tftpd-hpa.
If you want to configure the TFTP server, then you have to modify this configuration
file and restart the tftpd-hpa service afterword.
To modify the /etc/default/tftpd-hpa configuration file, run the following command
.. prompt:: bash $
sudo vim /etc/default/tftpd-hpa
Configuration file may contain following configuration options by default:
.. code-block::
# /etc/default/tftpd-hpa
TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/var/lib/tftpboot"
TFTP_ADDRESS=":69"
TFTP_OPTIONS="--secure"
Now change the **TFTP_DIRECTORY** to **/tftp** and add the **--create** option to the
**TFTP_OPTIONS**. Without the **--create** option, you won't be able to create or upload
new files to the TFTP server. You will only be able to update existing files.
After above changes /etc/default/tftpd-hpa file would look like this:
.. code-block::
# /etc/default/tftpd-hpa
TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/tftp"
TFTP_ADDRESS=":69"
TFTP_OPTIONS="--secure --create"
Since we have configured tftp directory as /tftp, put tiboot3.bin, tispl.bin
and u-boot.img after building it using sdk or manually cloning all the repos.
To build binaries use following defconfig files:
.. code-block::
am62ax_evm_r5_ethboot_defconfig
am62ax_evm_a53_ethboot_defconfig
`tiboot3.bin` is expected to be built from `am62ax_evm_r5_ethboot_defconfig` and
`tispl.bin` and `u-boot.img` are expected to be built from
`am62ax_evm_a53_ethboot_defconfig`.
Images should get fetched in following sequence as a part of boot procedure:
.. code-block::
tiboot3.bin => tispl.bin => u-boot.img
ROM loads and executes `tiboot3.bin` provided by the TFTP server.
Next, based on NET_VCI_STRING string mentioned in respective defconfig file `tiboot3.bin`
fetches `tispl.bin` and then `tispl.bin` fetches `u-boot.img` from TFTP server which
completes Ethernet boot on the device.
Falcon Mode
-----------