[U-Boot] [PATCH] Enable console log from earlyconsole in Linux bootargs

York Sun yorksun at freescale.com
Mon Nov 30 21:13:28 CET 2015



On 10/31/2015 03:20 AM, Pratiyush Mohan Srivastava wrote:
> Remove 115200 from "earlycon" to avoid loss of initial
> log messages during linux kernel 4.1  bootup
> 
> Signed-off-by: Pratiyush Mohan Srivastava <pratiyush.srivastava at freescale.com>
> ---
>  include/configs/ls2080a_common.h | 2 +-
>  include/configs/ls2080ardb.h     | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/configs/ls2080a_common.h b/include/configs/ls2080a_common.h
> index 31f6441..c39e294 100644
> --- a/include/configs/ls2080a_common.h
> +++ b/include/configs/ls2080a_common.h
> @@ -263,7 +263,7 @@ unsigned long long get_qixis_addr(void);
>  	"console=ttyAMA0,38400n8\0"
>  
>  #define CONFIG_BOOTARGS		"console=ttyS0,115200 root=/dev/ram0 " \
> -				"earlycon=uart8250,mmio,0x21c0500,115200 " \
> +				"earlycon=uart8250,mmio,0x21c0500" \
>  				"ramdisk_size=0x2000000 default_hugepagesz=2m" \
>  				" hugepagesz=2m hugepages=16"
>  #define CONFIG_BOOTCOMMAND		"cp.b $kernel_start $kernel_load "     \
> diff --git a/include/configs/ls2080ardb.h b/include/configs/ls2080ardb.h
> index 69bac8b..23d121a 100644
> --- a/include/configs/ls2080ardb.h
> +++ b/include/configs/ls2080ardb.h
> @@ -314,7 +314,7 @@ unsigned long get_board_sys_clk(void);
>  
>  #undef CONFIG_BOOTARGS
>  #define CONFIG_BOOTARGS		"console=ttyS1,115200 root=/dev/ram0 " \
> -				"earlycon=uart8250,mmio,0x21c0600,115200 " \
> +				"earlycon=uart8250,mmio,0x21c0600" \
>  				"ramdisk_size=0x2000000 default_hugepagesz=2m" \
>  				" hugepagesz=2m hugepages=16"
>  
> 

This has no negative effect on 4.0 and 3.x kernel, does it? I didn't notice the
message difference for 4.0.4.

York


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