[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Fabio Estevam]

Hi,

I am using U-boot 1.3.2 with the MX31ADS patches
posted by Guennadi Liakhovetski.

I would like to load the zImage kernel from Freescale
Linux BSP via TFTP and mount the rootfs via NFS.

Does anyone have an example for doing this? I am not
sure what address should I use to load the kernel into
RAM.

Thanks,

Fabio Estevam



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[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Guennadi Liakhovetski]

On Fri, 11 Apr 2008, Fabio Estevam wrote:

> I am using U-boot 1.3.2 with the MX31ADS patches
> posted by Guennadi Liakhovetski.
> 
> I would like to load the zImage kernel from Freescale
> Linux BSP via TFTP and mount the rootfs via NFS.

You nead a uImage. Just use the same kernel sources and do make uImage 
instead of zImage.

> Does anyone have an example for doing this? I am not
> sure what address should I use to load the kernel into
> RAM.

Load it to 0x80800000. You can also try the patch below, which will give 
you a better default environment, it shall be submitted to the list soon.

Thanks
Guennadi
---
Guennadi Liakhovetski

[PATCH] mx31ads: Fix default environment

Fix wrong load address in RAM, undefined environment variables,
make the default environment more usable.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
---
 include/configs/mx31ads.h |   25 ++++++++++++++++++-------
 1 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/include/configs/mx31ads.h b/include/configs/mx31ads.h
index 78e2545..3ad3883 100644
--- a/include/configs/mx31ads.h
+++ b/include/configs/mx31ads.h
@@ -80,13 +80,24 @@
 #define CONFIG_IPADDR		192.168.23.168
 #define CONFIG_SERVERIP		192.168.23.2
 
-#define	CONFIG_EXTRA_ENV_SETTINGS											\
-	"bootargs_base=setenv bootargs console=ttymxc0,115200\0"							\
-	"bootargs_nfs=setenv bootargs $(bootargs) root=/dev/nfs ip=dhcp nfsroot=$(serverip):$(nfsrootfs),v3,tcp\0"	\
-	"bootcmd=run bootcmd_net\0"											\
-	"bootcmd_net=run bootargs_base bootargs_mtd bootargs_nfs; tftpboot 0x80000000 uImage-mx31; bootm\0"		\
-	"prg_uboot=tftpboot 0x80000000 u-boot-mx31ads.bin; protect off 0xa0000000 0xa001ffff; erase 0xa0000000 0xa001ffff; cp.b 0x80000000 0xa0000000 $(filesize)\0"
-
+#define	CONFIG_EXTRA_ENV_SETTINGS					\
+	"netdev=eth0\0"							\
+	"load_addr=0x80800000\0"					\
+	"uboot_addr=0xa0000000\0"					\
+	"uboot=mx31ads/u-boot.bin\0"					\
+	"kernel=mx31ads/uImage\0"					\
+	"nfsroot=/opt/eldk/arm\0"					\
+	"bootargs_base=setenv bootargs console=ttymxc0,115200\0"	\
+	"bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs "	\
+		"ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp\0"	\
+	"bootcmd=run bootcmd_net\0"					\
+	"bootcmd_net=run bootargs_base bootargs_nfs; "			\
+		"tftpboot ${load_addr} ${kernel}; bootm\0"		\
+	"prg_uboot=tftpboot ${load_addr} ${uboot}; "			\
+		"protect off ${uboot_addr} 0xa003ffff; "		\
+		"erase ${uboot_addr} 0xa003ffff; "			\
+		"cp.b ${load_addr} ${uboot_addr} ${filesize}; "		\
+		"setenv filesize; saveenv\0"
 
 #define CONFIG_DRIVER_CS8900	1
 #define CS8900_BASE		0xb4020300
-- 
1.5.4

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Fabio Estevam]

Hi Guennadi,

I tried to load the kernel at 0x80800000, but this is
what I get:
Hit any key to stop autoboot:  0
=> run bootargs_base bootargs_nfs
=> tftp 80800000 uImage
TFTP from server 10.29.244.101; our IP address is
10.29.244.102
Filename 'uImage'.
Load address: 0x80800000
Loading:
#################################################################
         ###########################
done
Bytes transferred = 1339152 (146f10 hex)
=> bootm
## Booting image at 80800000 ...
   Image Name:   Linux-2.6.22
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1339088 Bytes =  1.3 MB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
OK

Starting kernel ...

Uncompressing
Linux.............................................................
................................... done, booting the
kernel.
(then it freezes)
  
I generated uImage manually by doing:
./mkimage -A arm -O linux -T kernel -C none -a
0x80008000 -e 0x80008000 -n 'Linux-2.6.22' -d zImage
uImage

Used 0x80008000 to match the value of ZRELADDR in
/arch/arm/mach-mx3/Makefile.boot from Freescale Linux
BSP.

Any suggestions?

Thanks,

Fabio Estevam

--- Guennadi Liakhovetski <g.liakhovetski@gmx.de>
wrote:

> On Fri, 11 Apr 2008, Fabio Estevam wrote:
> 
> > I am using U-boot 1.3.2 with the MX31ADS patches
> > posted by Guennadi Liakhovetski.
> > 
> > I would like to load the zImage kernel from
> Freescale
> > Linux BSP via TFTP and mount the rootfs via NFS.
> 
> You nead a uImage. Just use the same kernel sources
> and do make uImage 
> instead of zImage.
> 
> > Does anyone have an example for doing this? I am
> not
> > sure what address should I use to load the kernel
> into
> > RAM.
> 
> Load it to 0x80800000. You can also try the patch
> below, which will give 
> you a better default environment, it shall be
> submitted to the list soon.
> 
> Thanks
> Guennadi
> ---
> Guennadi Liakhovetski
> 
> [PATCH] mx31ads: Fix default environment
> 
> Fix wrong load address in RAM, undefined environment
> variables,
> make the default environment more usable.
> 
> Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
> ---
>  include/configs/mx31ads.h |   25
> ++++++++++++++++++-------
>  1 files changed, 18 insertions(+), 7 deletions(-)
> 
> diff --git a/include/configs/mx31ads.h
> b/include/configs/mx31ads.h
> index 78e2545..3ad3883 100644
> --- a/include/configs/mx31ads.h
> +++ b/include/configs/mx31ads.h
> @@ -80,13 +80,24 @@
>  #define CONFIG_IPADDR		192.168.23.168
>  #define CONFIG_SERVERIP		192.168.23.2
>  
> -#define	CONFIG_EXTRA_ENV_SETTINGS											\
> -	"bootargs_base=setenv bootargs
> console=ttymxc0,115200\0"							\
> -	"bootargs_nfs=setenv bootargs $(bootargs)
> root=/dev/nfs ip=dhcp
> nfsroot=$(serverip):$(nfsrootfs),v3,tcp\0"	\
> -	"bootcmd=run bootcmd_net\0"											\
> -	"bootcmd_net=run bootargs_base bootargs_mtd
> bootargs_nfs; tftpboot 0x80000000 uImage-mx31;
> bootm\0"		\
> -	"prg_uboot=tftpboot 0x80000000 u-boot-mx31ads.bin;
> protect off 0xa0000000 0xa001ffff; erase 0xa0000000
> 0xa001ffff; cp.b 0x80000000 0xa0000000
> $(filesize)\0"
> -
> +#define	CONFIG_EXTRA_ENV_SETTINGS					\
> +	"netdev=eth0\0"							\
> +	"load_addr=0x80800000\0"					\
> +	"uboot_addr=0xa0000000\0"					\
> +	"uboot=mx31ads/u-boot.bin\0"					\
> +	"kernel=mx31ads/uImage\0"					\
> +	"nfsroot=/opt/eldk/arm\0"					\
> +	"bootargs_base=setenv bootargs
> console=ttymxc0,115200\0"	\
> +	"bootargs_nfs=setenv bootargs ${bootargs}
> root=/dev/nfs "	\
> +		"ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp\0"
> \
> +	"bootcmd=run bootcmd_net\0"					\
> +	"bootcmd_net=run bootargs_base bootargs_nfs; "			\
> +		"tftpboot ${load_addr} ${kernel}; bootm\0"		\
> +	"prg_uboot=tftpboot ${load_addr} ${uboot}; "			\
> +		"protect off ${uboot_addr} 0xa003ffff; "		\
> +		"erase ${uboot_addr} 0xa003ffff; "			\
> +		"cp.b ${load_addr} ${uboot_addr} ${filesize}; "	
> \
> +		"setenv filesize; saveenv\0"
>  
>  #define CONFIG_DRIVER_CS8900	1
>  #define CS8900_BASE		0xb4020300
> -- 
> 1.5.4
> 
> 


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[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Guennadi Liakhovetski]

On Sat, 12 Apr 2008, Fabio Estevam wrote:

> I tried to load the kernel at 0x80800000, but this is
> what I get:
> Hit any key to stop autoboot:  0
> => run bootargs_base bootargs_nfs
> => tftp 80800000 uImage
> TFTP from server 10.29.244.101; our IP address is
> 10.29.244.102
> Filename 'uImage'.
> Load address: 0x80800000
> Loading:
> #################################################################
>          ###########################
> done
> Bytes transferred = 1339152 (146f10 hex)
> => bootm
> ## Booting image at 80800000 ...
>    Image Name:   Linux-2.6.22
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    1339088 Bytes =  1.3 MB
>    Load Address: 80008000
>    Entry Point:  80008000
>    Verifying Checksum ... OK
> OK
> 
> Starting kernel ...
> 
> Uncompressing
> Linux.............................................................
> ................................... done, booting the
> kernel.
> (then it freezes)
>   
> I generated uImage manually by doing:
> ./mkimage -A arm -O linux -T kernel -C none -a
> 0x80008000 -e 0x80008000 -n 'Linux-2.6.22' -d zImage
> uImage
> 
> Used 0x80008000 to match the value of ZRELADDR in
> /arch/arm/mach-mx3/Makefile.boot from Freescale Linux
> BSP.

I'll just assume your uImage is correct - although I don't understand why 
you don't just do make uImage. Apart from that, verify that your console= 
command line parameter is correct, your machine ID matches, and that you 
don't have a jtag debugger like bdi2000 connected when you're trying to 
boot.

Thanks
Guennadi
---
Guennadi Liakhovetski

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Fabio Estevam]

Hi Guennadi,

Now I generated uImage correctly and it boots fine.

Have you ever tried to boot U-boot from NAND
(K9K1G08U0B) on the i.MX31ADS? 

Thanks,

Fabio Estevam

--- Guennadi Liakhovetski <g.liakhovetski@gmx.de>
wrote:

> On Sat, 12 Apr 2008, Fabio Estevam wrote:
> 
> > I tried to load the kernel at 0x80800000, but this
> is
> > what I get:
> > Hit any key to stop autoboot:  0
> > => run bootargs_base bootargs_nfs
> > => tftp 80800000 uImage
> > TFTP from server 10.29.244.101; our IP address is
> > 10.29.244.102
> > Filename 'uImage'.
> > Load address: 0x80800000
> > Loading:
> >
>
#################################################################
> >          ###########################
> > done
> > Bytes transferred = 1339152 (146f10 hex)
> > => bootm
> > ## Booting image at 80800000 ...
> >    Image Name:   Linux-2.6.22
> >    Image Type:   ARM Linux Kernel Image
> (uncompressed)
> >    Data Size:    1339088 Bytes =  1.3 MB
> >    Load Address: 80008000
> >    Entry Point:  80008000
> >    Verifying Checksum ... OK
> > OK
> > 
> > Starting kernel ...
> > 
> > Uncompressing
> >
>
Linux.............................................................
> > ................................... done, booting
> the
> > kernel.
> > (then it freezes)
> >   
> > I generated uImage manually by doing:
> > ./mkimage -A arm -O linux -T kernel -C none -a
> > 0x80008000 -e 0x80008000 -n 'Linux-2.6.22' -d
> zImage
> > uImage
> > 
> > Used 0x80008000 to match the value of ZRELADDR in
> > /arch/arm/mach-mx3/Makefile.boot from Freescale
> Linux
> > BSP.
> 
> I'll just assume your uImage is correct - although I
> don't understand why 
> you don't just do make uImage. Apart from that,
> verify that your console= 
> command line parameter is correct, your machine ID
> matches, and that you 
> don't have a jtag debugger like bdi2000 connected
> when you're trying to 
> boot.
> 
> Thanks
> Guennadi
> ---
> Guennadi Liakhovetski
> 
>
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[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Guennadi Liakhovetski]

On Sun, 13 Apr 2008, Fabio Estevam wrote:

> Now I generated uImage correctly and it boots fine.

Good

> Have you ever tried to boot U-boot from NAND
> (K9K1G08U0B) on the i.MX31ADS? 

No, I have not.

Thanks
Guennadi
---
Guennadi Liakhovetski

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Jens Gehrlein]

Hi Fabio,

Fabio Estevam schrieb:
> Hi Guennadi,
> 
> Now I generated uImage correctly and it boots fine.

How did you build this Kernel? Did you use the LTIB?

Regards
Jens

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Fabio Estevam]

Hi Jens,

Yes, I used LTIB for building the kernel:

export SYSCFG_KTARG=uImage
./ltib -p kernel -m prep
./ltib -p kernel -m scbuild
./ltib -p kernel -m scdeploy

The uImage is generated at:
.../rpm/BUILD/linux/arch/arm/boot/uImage 

Regards,

Fabio Estevam

--- Jens Gehrlein <sew_s@tqs.de> wrote:

> Hi Fabio,
> 
> Fabio Estevam schrieb:
> > Hi Guennadi,
> > 
> > Now I generated uImage correctly and it boots
> fine.
> 
> How did you build this Kernel? Did you use the LTIB?
> 
> Regards
> Jens
> 
>
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>
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[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Jens Gehrlein]

Fabio Estevam schrieb:
> Hi Jens,
> 
> Yes, I used LTIB for building the kernel:
> 
> export SYSCFG_KTARG=uImage
> ./ltib -p kernel -m prep
> ./ltib -p kernel -m scbuild
> ./ltib -p kernel -m scdeploy
> 
> The uImage is generated at:
> .../rpm/BUILD/linux/arch/arm/boot/uImage 
> 
> Regards,
> 
> Fabio Estevam

Thank you very much.
I will try it as soon as I come to the Linux part.

Regards
Jens

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Jens Gehrlein]

Hi Guennadi,

Guennadi Liakhovetski schrieb:

...

Apart from that, verify that your console=
> command line parameter is correct, your machine ID matches, and that you 
> don't have a jtag debugger like bdi2000 connected when you're trying to 
> boot.

I have the same problem on our board: I don't see the console outputs if 
the BDI2000 cable is connected to the target, although the BDI is in 
mode "reset run". Do have an idea why?

Best Regards,
Jens

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Guennadi Liakhovetski]

On Wed, 14 May 2008, Jens Gehrlein wrote:

> Apart from that, verify that your console=
> > command line parameter is correct, your machine ID matches, and that you
> > don't have a jtag debugger like bdi2000 connected when you're trying to
> > boot.
> 
> I have the same problem on our board: I don't see the console outputs if the
> BDI2000 cable is connected to the target, although the BDI is in mode "reset
> run". Do have an idea why?

No, I don't know "why", but that's exactly why I've mentioned it above - I 
had the same problem here and I spent about half a day trying to figure 
out why it didn't boot.

Thanks
Guennadi
---
Guennadi Liakhovetski

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Fabio Estevam]

Hi Jens,

Have you tried to pass the "jtag=on" option into the kernel command line?

Regards,

Fabio Estevam

--- On Wed, 5/14/08, Jens Gehrlein <sew_s@tqs.de> wrote:

> From: Jens Gehrlein <sew_s@tqs.de>
> Subject: Re: [U-Boot-Users] Loading a kernel on MX31ADS using U-boot
> To: "Guennadi Liakhovetski" <g.liakhovetski@gmx.de>
> Cc: u-boot-users at lists.sourceforge.net
> Date: Wednesday, May 14, 2008, 4:08 AM
> Hi Guennadi,
> 
> Guennadi Liakhovetski schrieb:
> 
> ...
> 
> Apart from that, verify that your console=
> > command line parameter is correct, your machine ID
> matches, and that you 
> > don't have a jtag debugger like bdi2000 connected
> when you're trying to 
> > boot.
> 
> I have the same problem on our board: I don't see the
> console outputs if 
> the BDI2000 cable is connected to the target, although the
> BDI is in 
> mode "reset run". Do have an idea why?
> 
> Best Regards,
> Jens
> 
> 
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[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Jens Gehrlein]

Hi Fabio,

Fabio Estevam schrieb:
> Hi Jens,
> 
> Have you tried to pass the "jtag=on" option into the kernel command line?

Yippee! This works.
Thank you very much for this hint!
Where is this parameter documented? I didn't found anything in 
linux/Documentation or with google.

...

>> Apart from that, verify that your console=
>>> command line parameter is correct, your machine ID
>> matches, and that you 
>>> don't have a jtag debugger like bdi2000 connected
>> when you're trying to 
>>> boot.
>> I have the same problem on our board: I don't see the
>> console outputs if 
>> the BDI2000 cable is connected to the target, although the
>> BDI is in 
>> mode "reset run". Do have an idea why?


Best Regards,
Jens

[U-Boot-Users] Loading a kernel on MX31ADS using U-boot

[Fabio Estevam]

--- On Thu, 5/15/08, Jens Gehrlein <sew_s@tqs.de> wrote:


> Yippee! This works.
> Thank you very much for this hint!
> Where is this parameter documented? I didn't found
> anything in 
> linux/Documentation or with google.

Yes, this is a Freescale specific option as part of the BSP for mainly debugging purpose.

Regards,

Fabio Estevam