[PATCH 1/2] configs: stm32mp1: set the console variable for extlinux.conf
Set the environment variable "console", used in extlinux.conf file when it is generated by YOCTO distribution with:
UBOOT_EXTLINUX_CONSOLE ??= "console=${console},${baudrate}"
With these 2 variables, U-Boot give dynamically the used console and baudrate in the Linux kernel bootargs.
For the STMicroelectronics boards, the used console is ttySTM0.
Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com ---
include/configs/stm32mp15_st_common.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/configs/stm32mp15_st_common.h b/include/configs/stm32mp15_st_common.h index 10248bffc1..e8dad004c6 100644 --- a/include/configs/stm32mp15_st_common.h +++ b/include/configs/stm32mp15_st_common.h @@ -8,6 +8,9 @@ #ifndef __CONFIG_STM32MP15_ST_COMMON_H__ #define __CONFIG_STM32MP15_ST_COMMON_H__
+#define STM32MP_BOARD_EXTRA_ENV \ + "console=ttySTM0\0" + #include <configs/stm32mp15_common.h>
#ifdef CONFIG_EXTRA_ENV_SETTINGS
On STMicroelectronics boards, the UART can reliably go up to 2000000 bauds when connected to the on-board ST-LINK-V2 for STM32MP15
Unfortunately U-Boot will fall back to 115200 unless higher rates are declared via CONFIG_SYS_BAUDRATE_TABLE.
This patch add the support of higher baudrates on STMicroelectronics boards with ST-LINK.
Cc: Alexandru Gagniuc mr.nuke.me@gmail.com Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com ---
include/configs/stm32mp15_st_common.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/configs/stm32mp15_st_common.h b/include/configs/stm32mp15_st_common.h index e8dad004c6..3c0ffb8f56 100644 --- a/include/configs/stm32mp15_st_common.h +++ b/include/configs/stm32mp15_st_common.h @@ -13,6 +13,11 @@
#include <configs/stm32mp15_common.h>
+/* uart with on-board st-link */ +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200, \ + 230400, 460800, 921600, \ + 1000000, 2000000 } + #ifdef CONFIG_EXTRA_ENV_SETTINGS /* * default bootcmd for stm32mp1 STMicroelectronics boards:
Hi Patrick
On 4/15/22 14:31, Patrick Delaunay wrote:
On STMicroelectronics boards, the UART can reliably go up to 2000000 bauds when connected to the on-board ST-LINK-V2 for STM32MP15
Unfortunately U-Boot will fall back to 115200 unless higher rates are declared via CONFIG_SYS_BAUDRATE_TABLE.
This patch add the support of higher baudrates on STMicroelectronics boards with ST-LINK.
Cc: Alexandru Gagniuc mr.nuke.me@gmail.com Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com
include/configs/stm32mp15_st_common.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/configs/stm32mp15_st_common.h b/include/configs/stm32mp15_st_common.h index e8dad004c6..3c0ffb8f56 100644 --- a/include/configs/stm32mp15_st_common.h +++ b/include/configs/stm32mp15_st_common.h @@ -13,6 +13,11 @@
#include <configs/stm32mp15_common.h>
+/* uart with on-board st-link */ +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200, \
230400, 460800, 921600, \1000000, 2000000 }#ifdef CONFIG_EXTRA_ENV_SETTINGS /*
- default bootcmd for stm32mp1 STMicroelectronics boards:
Reviewed-by: Patrice Chotard patrice.chotard@foss.st.com
Thanks Patrice
On 4/15/22 14:31, Patrick Delaunay wrote:
On STMicroelectronics boards, the UART can reliably go up to 2000000 bauds when connected to the on-board ST-LINK-V2 for STM32MP15
Unfortunately U-Boot will fall back to 115200 unless higher rates are declared via CONFIG_SYS_BAUDRATE_TABLE.
This patch add the support of higher baudrates on STMicroelectronics boards with ST-LINK.
Cc: Alexandru Gagniuc mr.nuke.me@gmail.com Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com
include/configs/stm32mp15_st_common.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/configs/stm32mp15_st_common.h b/include/configs/stm32mp15_st_common.h index e8dad004c6..3c0ffb8f56 100644 --- a/include/configs/stm32mp15_st_common.h +++ b/include/configs/stm32mp15_st_common.h @@ -13,6 +13,11 @@
#include <configs/stm32mp15_common.h>
+/* uart with on-board st-link */ +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200, \
230400, 460800, 921600, \1000000, 2000000 }#ifdef CONFIG_EXTRA_ENV_SETTINGS /*
- default bootcmd for stm32mp1 STMicroelectronics boards:
Applied to u-boot-stm32
Thanks Patrice
Hi Patrick
On 4/15/22 14:31, Patrick Delaunay wrote:
Set the environment variable "console", used in extlinux.conf file when it is generated by YOCTO distribution with:
UBOOT_EXTLINUX_CONSOLE ??= "console=${console},${baudrate}"
With these 2 variables, U-Boot give dynamically the used console and baudrate in the Linux kernel bootargs.
For the STMicroelectronics boards, the used console is ttySTM0.
Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com
include/configs/stm32mp15_st_common.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/configs/stm32mp15_st_common.h b/include/configs/stm32mp15_st_common.h index 10248bffc1..e8dad004c6 100644 --- a/include/configs/stm32mp15_st_common.h +++ b/include/configs/stm32mp15_st_common.h @@ -8,6 +8,9 @@ #ifndef __CONFIG_STM32MP15_ST_COMMON_H__ #define __CONFIG_STM32MP15_ST_COMMON_H__
+#define STM32MP_BOARD_EXTRA_ENV \
- "console=ttySTM0\0"
#include <configs/stm32mp15_common.h>
#ifdef CONFIG_EXTRA_ENV_SETTINGS
Reviewed-by: Patrice Chotard patrice.chotard@foss.st.com
Thanks Patrice
On 4/15/22 14:31, Patrick Delaunay wrote:
Set the environment variable "console", used in extlinux.conf file when it is generated by YOCTO distribution with:
UBOOT_EXTLINUX_CONSOLE ??= "console=${console},${baudrate}"
With these 2 variables, U-Boot give dynamically the used console and baudrate in the Linux kernel bootargs.
For the STMicroelectronics boards, the used console is ttySTM0.
Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com
include/configs/stm32mp15_st_common.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/configs/stm32mp15_st_common.h b/include/configs/stm32mp15_st_common.h index 10248bffc1..e8dad004c6 100644 --- a/include/configs/stm32mp15_st_common.h +++ b/include/configs/stm32mp15_st_common.h @@ -8,6 +8,9 @@ #ifndef __CONFIG_STM32MP15_ST_COMMON_H__ #define __CONFIG_STM32MP15_ST_COMMON_H__
+#define STM32MP_BOARD_EXTRA_ENV \
- "console=ttySTM0\0"
#include <configs/stm32mp15_common.h>
#ifdef CONFIG_EXTRA_ENV_SETTINGS
Applied to u-boot-stm32
Thanks Patrice
participants (2)
-
Patrice CHOTARD -
Patrick Delaunay