My current DTS file contains following entry:
bootargs = "console=ttyS0,115200"
and it works in a following way:
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[ 9.320212] procd: - early -
[ 9.323174] procd: - watchdog -
[ 9.924724] procd: - ubus -
[ 9.986055] procd: - init -
Please press Enter to activate this console.
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@LEDE:/#
If I enable "ttylogin" in /etc/config/system it works quite similarly (just
asks for a login):
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[ 9.362481] procd: - early -
[ 9.365550] procd: - watchdog -
[ 9.983522] procd: - ubus -
[ 10.044877] procd: - init -
Please press Enter to activate this console.
LEDE login:
LEDE login: root
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@LEDE:~#
My problem appears when I drop bootargs and use:
stdout-path = "/chipcommonA/serial@0300:115200";
instead (which is a non-deprecated DTS solution).
In such case I can't login anymore:
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[ 9.340180] procd: - early -
[ 9.343141] procd: - watchdog -
[ 9.944758] procd: - ubus -
[ 10.006092] procd: - init -
Do you know what's the reason for this? Can we have a proper console support
while using upstream preferred syntax for the stdout-path?
Please note entering failsafe mode it not affected by this.
I'm also attaching a diff switching to alias + stdout-path.
diff --git a/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts
b/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts
index 36b628b..a5442a9 100644
--- a/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts
+++ b/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts
@@ -17,7 +17,7 @@
model = "SmartRG SR400ac";
chosen {
- bootargs = "console=ttyS0,115200 earlycon";
+ bootargs = "earlycon";
};
memory {
diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
index 4fbb089..5a9fa3e 100644
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -18,8 +18,12 @@
/ {
interrupt-parent = <&gic>;
+ aliases {
+ serial0 = &uart0;
+ };
+
chosen {
- stdout-path = &uart0;
+ stdout-path = "serial0:115200n8";
};
chipcommonA {
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