[U-Boot-Users] how to enable autoboot feature in u-boot

Wayne Lee

6 May 2005 6 May '05

10:37 a.m.

Hi, u-boot folks,

I just program my u-boot port in to flash. After press board reset button, u-boot only enters prompt mode, like follows.

U-Boot 1.1.2 (May 6 2005 - 15:58:37)

U-Boot code: 03F80000 -> 03F920B8 BSS: -> 03F93938 RAM Configuration: Bank #0: 00000000 64 MB Flash: 4 MB In: serial Out: serial Err: serial U-Boot #

How to enable the "autoboot" feature? I would like u-boot to auto boot uClinux system after reset/power on.

Hit any key to stop autoboot: 0 ## Booting image at 20100000 ...

Thanks. Wayne

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Wolfgang Denk

6 May 6 May

11:42 a.m.

In message 200505060841.j468fA8R013734@ismp.csie.ncku.edu.tw you wrote:

...

How to enable the "autoboot" feature?

What's your definitions of "bootcmd" and "bootdelay" ?

Best regards,

Wolfgang Denk

Wayne Lee

2:29 p.m.

WD, you got it. I do not add CONFIG_BOOTCOMMAND. Now the autoboot feature is enabled. :)

Thanks. Wayne

-----Original Message----- From: u-boot-users-admin@lists.sourceforge.net [mailto:u-boot-users-admin@lists.sourceforge.net] On Behalf Of Wolfgang Denk Sent: Friday, May 06, 2005 5:43 PM To: Wayne Lee Cc: 'u-boot-users' Subject: Re: [U-Boot-Users] how to enable autoboot feature in u-boot

In message 200505060841.j468fA8R013734@ismp.csie.ncku.edu.tw you wrote:

...

How to enable the "autoboot" feature?

What's your definitions of "bootcmd" and "bootdelay" ?

Best regards,

Wolfgang Denk

-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de The manager will be continually amazed that policies he took for com- mon knowledge are totally unknown by some member of his team. Since his fundamental job is to keep everybody going in the same direction, his chief daily task will be communication, not decision-making. - Fred Brooks, "The Mythical Man Month" ------------------------------------------------------- This SF.Net email is sponsored by: NEC IT Guy Games. Get your fingers limbered up and give it your best shot. 4 great events, 4 opportunities to win big! Highest score wins.NEC IT Guy Games. Play to win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20 _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users

Wolfgang Denk

2:39 p.m.

In message 200505061233.j46CXY8R016074@ismp.csie.ncku.edu.tw you wrote:

...

WD, you got it. I do not add CONFIG_BOOTCOMMAND. Now the autoboot feature is enabled. :)

Actually you don't have to change the configuration. Just defining the "bootcmd" environment variable will do as well.

Best regards,

Wolfgang Denk

-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de The flow chart is a most thoroughly oversold piece of program docu- mentation. -- Frederick Brooks, "The Mythical Man Month"

朱成

8 May 8 May

11:21 a.m.

New subject: [U-Boot-Users] boot kernel from flash

hi,all i want to boot kernel from flash on TI p2-sample rev.6 board. i used:

1. erase 0x100000 0x3fffff (0x100000--0x3fffff is flash room for kernel) 2. loadb 0x100000 3. using kermit to transfer uImage from ttyS0 4. using "iminfo 0x100000", and i found "Bad Magic Number" 5. setenv bootcmd bootm 0x100000 6. boot, but i found "## Booting image at 00100000 ... Bad Magic Number"

i used this uImage file to boot kernel from memory, so kernel image is right! and i tried to use "tftp 0x100000" to download image to flash,and the result is identical.

and i did more testing: 1. tftp 0x10000000 (0x10000000 is ram address) 2. erase 0x100000 0x3fffff 3. cp.b 0x10000000 0x100000 $(filesize) 4. bootm 0x100000

the kernel boot successed! but if i rebooted, and "bootm 0x100000", the kernel stoped when mounted nfsroot fs. the boot information was: .............................. <6>Freeing initrd memory: 4096K Freeing initrd memory: 4096K <5>Looking up port of RPC 100003/2 on 172.16.6.79 Looking up port of RPC 100003/2 on 172.16.6.79

(172.16.6.79 is nfsroot server)

so, what's wrong with it?

thank you!

Wolfgang Denk

12:12 p.m.

New subject: [U-Boot-Users] boot kernel from flash

In message 1115544065.6600.7.camel@localhost you wrote:

...

erase 0x100000 0x3fffff (0x100000--0x3fffff is flash room for kernel)

loadb 0x100000

You cannot load directly to flash. Youmust always write to RAM first, and then use the "cp" command (or cp.b etc.) to write to flash.

...

using kermit to transfer uImage from ttyS0

using "iminfo 0x100000", and i found "Bad Magic Number"

This means that your image was not written to flash (which is not a surprise, as "loadb" is NOT listed as a flash programming command in the manual -- ummm.... You did read the manual, didn't you? Before posting???

...

setenv bootcmd bootm 0x100000

boot, but i found "## Booting image at 00100000 ... Bad Magic Number"

This is to be expeted, too. If there was no valid image after download, it would take a certain amount of magic to be there now.

...

i used this uImage file to boot kernel from memory, so kernel image is right! and i tried to use "tftp 0x100000" to download image to flash,and the result is identical.

Of course. Because "tftp" is NOT listed as a flash programming command in the manual .. etc.

I REALLY recommend you to READ the manual.

...

and i did more testing:

tftp 0x10000000 (0x10000000 is ram address)

erase 0x100000 0x3fffff

cp.b 0x10000000 0x100000 $(filesize)

bootm 0x100000

the kernel boot successed! ...

Of course this works. That's the documented way to do things.

...

... but if i rebooted, and "bootm 0x100000", the kernel stoped when mounted nfsroot fs. the boot information was: .............................. <6>Freeing initrd memory: 4096K Freeing initrd memory: 4096K <5>Looking up port of RPC 100003/2 on 172.16.6.79 Looking up port of RPC 100003/2 on 172.16.6.79

(172.16.6.79 is nfsroot server)

Probably a configuration problem with your NFS server?

Best regards,

Wolfgang Denk

-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de I have been over into the future, and it works. - Lincoln Steffens in _Letters_ (1938) vol. 1, p. 463

朱成

12:26 p.m.

New subject: [U-Boot-Users] boot kernel from flash

...

Probably a configuration problem with your NFS server?

there isn't a configuration problem with my NFS server. because i can boot image from ram and can boot image from flash when not rebooting the board.

Wolfgang Denk

4:05 p.m.

New subject: [U-Boot-Users] boot kernel from flash

In message 1115547970.6600.13.camel@localhost you wrote:

...

...
Probably a configuration problem with your NFS server?

there isn't a configuration problem with my NFS server. because i can boot image from ram and can boot image from flash when not rebooting the board.

Well, if you had provided sufficient information (like the complete log of all boot messages including especially the boot arguments passed to the kernel [ideally for both the working and the non-working configurations]) there might have been a chance to help you.

Without such information I cn only say you're doing something wrong. The behaviour of the kernel does NOT depend on where it's been stored when running "bootm".

Best regards,

Wolfgang Denk

-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de KLB is an acronym for `Known Lazy Bastard', aka non-FAQ reader, aka person who would rather make someone take their time to explain something basic than look it up in a FAQ. -- Tom Christiansen in 6aq547$mnr$2@csnews.cs.colorado.edu

朱成

9 May 9 May

9:11 a.m.

New subject: [U-Boot-Users] boot kernel from flash

...

Well, if you had provided sufficient information (like the complete log of all boot messages including especially the boot arguments passed to the kernel [ideally for both the working and the non-working configurations]) there might have been a chance to help you.

i set bootargs blank, and set CONFIG_CMDLINE="root=/dev/nfs nfsroot=172.16.6.79:/opt/montavista/cee/devkit/arm/v4t_le/target ip=172.16.7.180:172.16.7.180:172.16.6.1:255.255.254.0 console=ttyS0,115200 mem=32M" when booting from ram and flash.

i used tcpdump on the nfs server, and found no packets from my board when booted from flash.

i did nothing different to boot kernel from ram and flash.

-- 朱成智能手机部龙旗科技（上海）有限公司电话: 021-64088898-6159 传真: 021-54970876 Email: zhucheng@longcheer.net 地址：上海市漕宝路401号1号楼6楼邮编：200233

Wolfgang Denk

9:24 a.m.

New subject: [U-Boot-Users] boot kernel from flash

In message 1115622690.10065.15.camel@localhost you wrote:

...

i set bootargs blank, and set CONFIG_CMDLINE="root=/dev/nfs nfsroot=172.16.6.79:/opt/montavista/cee/devkit/arm/v4t_le/target ip=172.16.7.180:172.16.7.180:172.16.6.1:255.255.254.0 console=ttyS0,115200 mem=32M" when booting from ram and flash.

I bet you did set bootargs, and if just to the pre-configured value.

I really don't understand why you don't provide the information I asked for. You can as well stop posting your questions then because I won't be able to help anyway.

...

i used tcpdump on the nfs server, and found no packets from my board when booted from flash.

Maybe you should read the FAQ, especially http://www.denx.de/twiki/bin/view/DULG/EthernetDoesNotWorkInLinux

Best regards,

Wolfgang Denk

-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de We have phasers, I vote we blast 'em! -- Bailey, "The Corbomite Maneuver", stardate 1514.2

朱成

9:55 a.m.

New subject: [U-Boot-Users] boot kernel from flash

i'm sorry:) i found kernel not set Ethernet addr when booted from flash. i will read kernel/net-device_driver thanks!!!

boot log:

smc91x.c: v1.0, mar 07 2003 by Nicolas Pitre nico@cam.org smc91x.c: v1.0, mar 07 2003 by Nicolas Pitre nico@cam.org eth0: SMC91C94 (rev 9) at 0xe8000300 IRQ 38 [nowait] eth0: SMC91C94 (rev 9) at 0xe8000300 IRQ 38 [nowait] eth0: Ethernet addr: eth0: Ethernet addr: ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff ff

/************************/ when boot from ram:

eth0: Ethernet addr: eth0: Ethernet addr: 00:00:50:50:c2:c2:35:35:b0:b0:6a 6a /************************/

<6>OMAP730 I2C INFO: Driver ver. 1.1 OMAP730 I2C INFO: Driver ver. 1.1 <7>i2c-dev.o: Registered 'OMAP730 I2C adapter' as minor 0 OMAP730 NOR FLASH: MTD Self-Contained Driver ver. 1.0 OMAP730 NOR FLASH: MTD Self-Contained Driver ver. 1.0 <6>OMAP730 NOR FLASH: Intel 28F256L18T found OMAP730 NOR FLASH: Intel 28F256L18T found <5>Creating 4 MTD partitions on "OMAP730 NOR FLASH": Creating 4 MTD partitions on "OMAP730 NOR FLASH": <5>0x00000000-0x00100000 : "BootLoader and Params" 0x00000000-0x00100000 : "BootLoader and Params" <5>0x00100000-0x00400000 : "Kernel" 0x00100000-0x00400000 : "Kernel" <5>0x00400000-0x01fe0000 : "MainFS" 0x00400000-0x01fe0000 : "MainFS" <5>0x01fe0000-0x02000000 : "GsmFFS" 0x01fe0000-0x02000000 : "GsmFFS" <6>DSPLinux FB (c) 2001 RidgeRun, Inc. DSPLinux FB (c) 2001 RidgeRun, Inc. Console: switching Console: switching to colour frame buffer device 22x27 to colour frame buffer device 22x27 <6>NET4: Linux TCP/IP 1.0 for NET4.0 NET4: Linux TCP/IP 1.0 for NET4.0 <6>IP Protocols: IP Protocols: ICMP, ICMP, UDP, UDP, TCP TCP <6>IP: routing cache hash table of 512 buckets, 4Kbytes IP: routing cache hash table of 512 buckets, 4Kbytes <6>TCP: Hash tables configured (established 2048 bind 4096) TCP: Hash tables configured (established 2048 bind 4096) IP-Config: Complete:IP-Config: Complete: device=eth0 device=eth0, addr=172.16.7.180, addr=172.16.7.180, mask=255.255.254.0, mask=255.255.254.0, gw=172.16.6.1, gw=172.16.6.1, host=172.16.7.180, domain=, nis-domain=(none), host=172.16.7.180, domain=, nis-domain=(none), bootserver=172.16.7.180, bootserver=172.16.7.180, rootserver=172.16.6.79, rootserver=172.16.6.79, rootpath=, rootpath=

<6>NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. <4>NetWinder Floating Point Emulator V0.95 (c) 1998-1999 Rebel.com NetWinder Floating Point Emulator V0.95 (c) 1998-1999 Rebel.com <5>RAMDISK: Couldn't find valid RAM disk image starting at 0. RAMDISK: Couldn't find valid RAM disk image starting at 0. <6>Freeing initrd memory: 4096K Freeing initrd memory: 4096K <5>Looking up port of RPC 100003/2 on 172.16.6.79 Looking up port of RPC 100003/2 on 172.16.6.79

-- 朱成智能手机部龙旗科技（上海）有限公司电话: 021-64088898-6159 传真: 021-54970876 Email: zhucheng@longcheer.net 地址：上海市漕宝路401号1号楼6楼邮编：200233

Wolfgang Denk

10:17 a.m.

New subject: [U-Boot-Users] boot kernel from flash

In message 1115625341.10065.24.camel@localhost you wrote:

...

i'm sorry:)

You should be sorry. If you had posted the full log of the boot messages as I requested I might have spotted this before.

...

i found kernel not set Ethernet addr when booted from flash. i will read kernel/net-device_driver thanks!!!

boot log:

smc91x.c: v1.0, mar 07 2003 by Nicolas Pitre nico@cam.org smc91x.c: v1.0, mar 07 2003 by Nicolas Pitre nico@cam.org eth0: SMC91C94 (rev 9) at 0xe8000300 IRQ 38 [nowait] eth0: SMC91C94 (rev 9) at 0xe8000300 IRQ 38 [nowait] eth0: Ethernet addr: eth0: Ethernet addr: ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff ff

/************************/ when boot from ram:

eth0: Ethernet addr: eth0: Ethernet addr: 00:00:50:50:c2:c2:35:35:b0:b0:6a 6a

You seem to have moire poroblems, like the driver initialization being run twice.

Best regards,

Wolfgang Denk

-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de The Buddha, the Godhead, resides quite as comfortably in the circuits of a digital computer or the gears of a cycle transmission as he does at the top of a mountain or in the petals of a flower. - R. Pirsig, "Zen and the Art of Motorcycle Maintenance"

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Wayne Lee
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朱成