[PATCH 1/2] serial: cadence: support console= and earlycon= fixups

[PATCH 1/2] serial: cadence: support console= and earlycon= fixups

[Ahmad Fatoum]

If we tell the serial driver core about the names of the Linux
console and earlycon driver, barebox can fix up the console= and
earlycon= arguments without having to hardcode Linux boot arguments.

Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
---
 drivers/serial/serial_cadence.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/serial/serial_cadence.c b/drivers/serial/serial_cadence.c
index bda3269106c7..52b488e80f0a 100644
--- a/drivers/serial/serial_cadence.c
+++ b/drivers/serial/serial_cadence.c
@@ -212,6 +212,9 @@ static int cadence_serial_probe(struct device *dev)
 	cdev->getc = cadence_serial_getc;
 	cdev->flush = cadence_serial_flush;
 	cdev->setbrg = priv->clk ? cadence_serial_setbaudrate : NULL;
+	cdev->linux_console_name = "ttyPS";
+	cdev->linux_earlycon_name = "cdns";
+	cdev->phys_base = priv->regs;
 
 	cadence_serial_init_port(cdev);
 
-- 
2.39.5

[PATCH 2/2] ARM: zynq: drop the board-specific environment

[Ahmad Fatoum]

The Linux device tree hardcodes per DT alias (since 2015) the
stdout-path to uart1, not uart0 and thus the Linux TTY device is called
ttyPS0 and not ttyPS1.

With previous changes to the serial driver to fix up the console device,
hardcoding this option is no longer needed, so drop it along with its
environment overlay that's now empty.

Reported-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
---
 arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console | 1 -
 arch/arm/configs/zynq_defconfig                              | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)
 delete mode 100644 arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console

diff --git a/arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console b/arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console
deleted file mode 100644
index 6c9f9dabcf1b..000000000000
--- a/arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console
+++ /dev/null
@@ -1 +0,0 @@
-console=ttyPS1,115200
diff --git a/arch/arm/configs/zynq_defconfig b/arch/arm/configs/zynq_defconfig
index 1a1378d3e079..752068f69196 100644
--- a/arch/arm/configs/zynq_defconfig
+++ b/arch/arm/configs/zynq_defconfig
@@ -17,7 +17,7 @@ CONFIG_BOOTM_VERBOSE=y
 CONFIG_BOOTM_INITRD=y
 CONFIG_BOOTM_OFTREE=y
 CONFIG_DEFAULT_ENVIRONMENT_GENERIC_NEW=y
-CONFIG_DEFAULT_ENVIRONMENT_PATH="arch/arm/boards/avnet-zedboard/env"
+CONFIG_DEFAULT_ENVIRONMENT_PATH=""
 CONFIG_DEBUG_LL=y
 CONFIG_LONGHELP=y
 CONFIG_CMD_MEMINFO=y
-- 
2.39.5

Re: [PATCH 1/2] serial: cadence: support console= and earlycon= fixups

[Gwenhael Goavec-Merou]

Hi,

Le 14/07/2025 à 9:12 AM, Ahmad Fatoum a écrit :
> If we tell the serial driver core about the names of the Linux
> console and earlycon driver, barebox can fix up the console= and
> earlycon= arguments without having to hardcode Linux boot arguments.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
> ---
>   drivers/serial/serial_cadence.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/serial/serial_cadence.c b/drivers/serial/serial_cadence.c
> index bda3269106c7..52b488e80f0a 100644
> --- a/drivers/serial/serial_cadence.c
> +++ b/drivers/serial/serial_cadence.c
> @@ -212,6 +212,9 @@ static int cadence_serial_probe(struct device *dev)
>   	cdev->getc = cadence_serial_getc;
>   	cdev->flush = cadence_serial_flush;
>   	cdev->setbrg = priv->clk ? cadence_serial_setbaudrate : NULL;
> +	cdev->linux_console_name = "ttyPS";
> +	cdev->linux_earlycon_name = "cdns";
> +	cdev->phys_base = priv->regs;
>   
>   	cadence_serial_init_port(cdev);
>   
Tested-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>

Thanks

Gwen

Re: [PATCH 2/2] ARM: zynq: drop the board-specific environment

[Gwenhael Goavec-Merou]

Hi,

Le 14/07/2025 à 9:12 AM, Ahmad Fatoum a écrit :
> The Linux device tree hardcodes per DT alias (since 2015) the
> stdout-path to uart1, not uart0 and thus the Linux TTY device is called
> ttyPS0 and not ttyPS1.
> 
> With previous changes to the serial driver to fix up the console device,
> hardcoding this option is no longer needed, so drop it along with its
> environment overlay that's now empty.
> 
> Reported-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
> Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
> ---
>   arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console | 1 -
>   arch/arm/configs/zynq_defconfig                              | 2 +-
>   2 files changed, 1 insertion(+), 2 deletions(-)
>   delete mode 100644 arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console
> 
> diff --git a/arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console b/arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console
> deleted file mode 100644
> index 6c9f9dabcf1b..000000000000
> --- a/arch/arm/boards/avnet-zedboard/env/nv/linux.bootargs.console
> +++ /dev/null
> @@ -1 +0,0 @@
> -console=ttyPS1,115200
> diff --git a/arch/arm/configs/zynq_defconfig b/arch/arm/configs/zynq_defconfig
> index 1a1378d3e079..752068f69196 100644
> --- a/arch/arm/configs/zynq_defconfig
> +++ b/arch/arm/configs/zynq_defconfig
> @@ -17,7 +17,7 @@ CONFIG_BOOTM_VERBOSE=y
>   CONFIG_BOOTM_INITRD=y
>   CONFIG_BOOTM_OFTREE=y
>   CONFIG_DEFAULT_ENVIRONMENT_GENERIC_NEW=y
> -CONFIG_DEFAULT_ENVIRONMENT_PATH="arch/arm/boards/avnet-zedboard/env"
> +CONFIG_DEFAULT_ENVIRONMENT_PATH=""
>   CONFIG_DEBUG_LL=y
>   CONFIG_LONGHELP=y
>   CONFIG_CMD_MEMINFO=y
Tested-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>

Thanks

Gwen